Friday, December 27, 2019

Royal Jelly Helps in Cognitive Support, Healing Wounds, Fertility Support, Antioxidant and Anti-Inflammatory Effects, Kidney and Liver Disease Support, Healthy Skin, Energy and Vitality, Digestive Support, Bone Support, Diabetic Support and Protection Against Neurodegenerative Diseases


Royal Jelly Health Benefits: Improves Collagen Levels And Mor

Dec 27, 2019

If you have no idea what royal jelly is, then it might sound like something either prestigious or expensive, sitting atop shelves out of reach of children. After all, it does say ‘royal’ in the name. But if you’re already familiar with what it does, then that opinion might not change at all since unsurprisingly so, royal jelly does deserve its name.

Why? Simple, because it’s been reported to have anti-diabetic, antioxidant, antibacterial and wound healing properties. And much like honey, it can be eaten too, with the benefit including asthma natural remedy, age-defying treatment, healthy bone development and to boost our immune system, and that’s not even all of it.

Here’s what you need to know about this amazing natural substance.

Royal Jelly

Similar to honey, royal jelly (RJ) is also produced by bees, although this nutritious substance is only produced by young nurse ones from the hive. As a substance, RJ contains a large amount of amino acids, which we can use for both reproduction and healthy cell growth. Bees usually use it for the nutrition of adult queen bees and her larvae. It's the sole food that queen and nurse bees eat all their lives, as well as what larvae eat for three days after hatching. In total, it’s the main food of bees, while honey is used to provide them energy...

Saturday, December 21, 2019

Honey Boosts Effectiveness of Traditional Medicine


Natural deep eutectic characteristics of honey improve the bioactivity and safety of traditional medicines

J Ethnopharmacol. 2019 Dec 11:112460

ETHNOPHARMACOLOGICAL RELEVANCE:

Honey, an important additive with natural deep eutectic solvent (NADES) characteristics, has been used in traditional medicine for thousands of years.

AIM OF THE STUDY:

We investigated the quality-improving effects of honey on Astragali Radix (Mikvetch Root) (RA) as an example.

MATERIALS AND METHODS:

Decoctions of raw RA, fried RA, honey-fried RA, and a man-made- honey-fried RA were prepared and compared in cell-based bioactivity tests, chemical composition tests, as well as a bioavailability test with calycosin-7-O-β-D-glucoside.

RESULTS:

The addition of honey increased the concentrations of active compounds and their oral bioavailability, provided protection against acetylation, and consequently increased their bioactivity. These changes were also observed when a pure NADES-mimicking honey was used.

CONCLUSION:

Our findings provide a potential explanation as to why honey has long been used as traditional medicine additives and rationalize the application of honey and honey-like substance in producing pharmaceuticals.

Wednesday, December 18, 2019

Propolis-Enriched Stingless Bee Honey Successfully Treats Diabetic Foot Ulcer with Exposed Bone

Successful treatment of a diabetic foot ulcer with exposed bone using Trigona honey: a case study

J Wound Care. 2019 Dec 1;28(Sup12):S4-S8

Many studies have shown that honey might improve wound healing. However, its efficacy for large wounds which may be followed by a systemic effect remains unclear. The effectiveness of honey-based dressings in treating large diabetic foot ulcers (DFU) is still unknown.

This study presents the case of a 38-year-old female patient presenting with an extensive infected DFU with exposed bone. The DFU was treated with propolis-enriched Trigona honey, used as a single treatment, in a home visit setting. After two months' follow-up, the wound exhibited complete re-epithelialisation despite the patient's initial poor condition.

Tuesday, December 10, 2019

Manuka Honey Used to Fight Infections in Surgical Dressings


Potential of Manuka Honey as a Natural Polyelectrolyte to Develop Biomimetic Nanostructured Meshes With Antimicrobial Properties

Front. Bioeng. Biotechnol., 04 December 2019

The use of antibiotics has been the cornerstone to prevent bacterial infections; however, the emergency of antibiotic-resistant bacteria is still an open challenge.

This work aimed to develop a delivery system for treating soft tissue infections for: (1) reducing the released antimicrobial amount, preventing drug-related systemic side effects; (2) rediscovering the beneficial effects of naturally derived agents; and (3) preserving the substrate functional properties. For the first time, Manuka honey (MH) was proposed as polyelectrolyte within the layer-by-layer assembly. Biomimetic electrospun poly(ε-caprolactone) meshes were treated via layer-by-layer assembly to obtain a multilayered nanocoating, consisting of MH as polyanion and poly-(allylamine-hydrochloride) as polycation. Physicochemical characterization demonstrated the successful nanocoating formation.

Different cell lines (human immortalized and primary skin fibroblasts, and primary endothelial cells) confirmed positively the membranes cytocompatibility, while bacterial tests using Gram-negative and Gram-positive bacteria demonstrated that the antimicrobial MH activity was dependent on the concentration used and strains tested.

Monday, December 09, 2019

How Manuka Honey Can Improve Your Digestion, Heal Wounds, Promote Oral Hygiene, Treat Colds and Coughs


How Manuka honey can help improve your health, especially during winters

Manuka honey is native to Australia and New Zealand. It has many benefits and uses like healing wounds, aiding digestion, and promoting oral hygiene, among others.

KEY HIGHLIGHTS

  • Honey is used all around the world as a popular condiment in food and home remedies
  • Manuka honey is produced in Australia and New Zealand
  • Here is how Manuka honey can be used to avail its many health benefits

New Delhi: Honey, as everybody knows, is a healthy food condiment. Honey has many health benefits and uses. It is used in weight loss remedies, as a natural source of sugar, to treat infections, and even as skincare solutions. Honey is of different types, based on how it is prepared and where it comes from. One such type of honey is the Manuka Honey.

Manuka honey is made in the southern continent of Australia, and its neighbouring island, New Zealand. The honey is prepared by bees that pollinate the Manuka bush, native to the region. Manuka honey is used widely and has many health benefits....

Thursday, December 05, 2019

People are Trying Bee Stings to Treat Lyme Disease

Katy Vine shares what she learned writing a story about people using bee stings to treat lyme disease.

Wednesday, December 04, 2019 7:42 a.m. by Amy Iler

In this podcast: Katy Vine,  Executive Editor of Texas Monthly, joins It Takes 2 to talk about a fascinating story she wrote about people desperately seeking treatments for lyme disease.


Thursday, November 28, 2019

Indonesian Stingless Bee Propolis is a Potential Non-Steroidal Anti-Inflammatory Drug


Anti-inflammatory activity of Tetragronula species from Indonesia

Saudi J Biol Sci. 2019 Nov;26(7):1531-153

Anti-inflammatory drugs inhibit inflammation, particularly those classified as nonsteroidal anti-inflammatory drugs (NSAIDs). Several studies have reported that propolis has both anti-ulcerogenic and anti-inflammatory effects.

In this study, we investigated the bioactive compound and in vivo anti-inflammatory properties of both smooth and rough propolis from Tetragronula sp. To further identify anti-inflammatory markers in propolis, LC-MS/MS was used, and results were analyzed by Mass Lynx 4.1. Rough and smooth propolis of Tetragonula sp. were microcapsulated with maltodextrin and arabic gum. Propolis microcapsules at dose 25-200 mg/kg were applied for carrageenan-induced rat's paw-inflammation model.

Data were analyzed by one-way ANOVA and Kruskal-Wallis statistical tests. LC-MS/MS experiments identified seven anti-inflammatory compounds, including [6]-dehydrogingerdione, alpha-tocopherol succinate, adhyperforin, 6-epiangustifolin, deoxypodophyllotoxin, kurarinone, and xanthoxyletin. Our results indicated that smooth propolis at 50 mg/kg inhibited inflammation to the greatest extent, followed by rough propolis at a dose of 25 mg/kg. SPM and RPM with the dose of 25 mg/kg had inflammatory inhibition value of 62.24% and 58.12%, respectively, which is comparable with the value 70.26% of sodium diclofenac with the dose of 135 mg/kg.

This study suggests that propolis has the potential candidate to develop as a non-steroid anti-inflammatory drug.

Friday, November 22, 2019

What is Apitherapy?


New Bee-Centric Spa Has Us Buzzing

Worker B Wellness offers holistic services using bee-derived products and provides free educational sessions about bees

Minnesota Monthly

Apitherapy is a form of alternative medicine that uses honey bee products such as honey, propolis, pollen, royal jelly, and bee venom. This type of therapy has existed for thousands of years. According to The American Apitherapy Society Inc., rock art created in ancient times illustrated that early hunter-gatherers viewed honeybees as a source of natural medicine. In fact, apitherapy was used to treat arthritis and other joint problems, which is still practiced today.

Romanelli has always had an interest in bees. She laughs as she says her family was “urban hippies”—always growing fresh produce and eating organic, local foods.

“My interest in bees is really an interest in the product they provide and also how they work in community with each other, which is really fascinating,” Romanelli says. “Each bee has a specific job in the hive to help the whole as a superorganism. So, when we were looking at this, we’re like, ‘OK, so Worker B Wellness is a superorganism—we’re all doing something to help the concept of the hive.”...

Thursday, November 21, 2019

Can Bee Stings Treat Lyme Disease?


Treatments for chronic Lyme disease are controversial and expensive. As a last resort, some patients are pursuing this unproven and painful alternative.

TEXAS MONTHLY, DECEMBER 2019

Avery was 41 and had been diagnosed with Lyme in 2013, though her symptoms dated back years before that. She told me that it had taken a few months to work up to ten stings; she thought the bee venom was setting off something called a Jarisch-Herxheimer reaction, a response to antimicrobials like antibiotics, in which the bacteria being destroyed release their contents into the bloodstream and cause flu-like symptoms. (It’s not scientifically documented whether venom in fact triggers the same reaction.) “I’m starting to handle it better than at first,” Avery said. “Like I’m not—knock on wood—getting as sick now because the bacterial load is going down, and I think I have a pretty good detox routine.” On the day following a stinging session, the women typically soak in Epsom salt baths, dry brush the skin around their lymph glands, and take coffee enemas—an effort they believe will expel toxins.

Like a nurse giving a vaccine, Gschwind held a bee in tweezers as Avery removed her ice pack. “Okay, ready?” Gschwind asked. “One, two, three.” She held the bee’s butt about an inch to the left of Avery’s lower spine and waited for the tiny stinger to pierce the skin. Then she pulled away the bee, now missing its stinger, which was still drilling into Avery’s back. The vibrating fuzzball was doomed without its barb, and Gschwind placed it in some soapy water to hasten its inevitable end. Afterward, Avery grimaced and breathed deeply as she returned the ice pack to her lower spine, preparing for the next sting.

This process would continue until the bottom portion of Avery’s spine looked like a clear highway running between two parallel rows of five inflamed bumps. Each protrusion was dotted with a stinger, moving like a pumpjack atop a tiny, rising hill, as it continued to gently, rhythmically, excrete venom. Twenty minutes later, when the barbs had done their job and stopped moving, Gschwind extracted them. Then Avery went through the same procedure to sting Gschwind.

While everything about this routine was taxing—the stinging, the seeming Herxheimer reaction, collecting bees and keeping them in her apartment—Gschwind didn’t see much of an alternative. She could not sit on the couch and groan in pain year in and year out while doctors told her she was fine, or that she should be fine, or that she would feel better in time. She’d tried that already. “What am I going to do? Because this isn’t fair. I deserve to have a life, to be functional,” she said. “Well, I guess I’m going to stick myself with bees.”...

Monday, November 18, 2019

Black Seed Oil, Honey, Whey Protein Increase Antioxidant Activity


Effect of black seed oil, honey, whey protein concentrate and their interaction on antioxidant activity, elastic modulus and creaming index of O/W emulsions

Journal of Dispersion Science and Technology

An emulsion based on a combination of highly-valued black seed oil (BSO) and honey shall be introduced as an emerging nutraceutical since the emulsion could be an efficient carrier for bioactive compounds from both.

This study aimed to determine effect of BSO, honey, whey protein concentrate (WPC) and their interaction on antioxidant activity (i.e. IC50, the concentration of sample required to scavenge 50% of 2,2-diphenyl-1-picrylhydrazyl free radicals), elastic modulus (G′) and creaming index (CI) of O/W emulsions by means of a response surface methodology. Twenty emulsions were ultrasonically prepared by using various combinations of BSO (10–20%), honey (10–20% and WPC (2–6%) based on a central composite design. Regression analysis (R2 = 0.92–1.00) revealed that a decrease in the IC50 was mainly due to significant (p < 0.05) linear effect of honey and WPC.

The quadratic effect of WPC significantly increased the G′ yet decreased the CI. Synergistic effects of BSO-honey on IC50 and G′ were also significant (p < 0.05). However, the antagonistic effect (p < 0.05) of honey-WPC seemed to increase the IC50. By using the fitted quadratic models, the optimized levels of BSO (20.0%), honey (18.2%) and WPC (6.0%) were proposed and predicted to provide the desired emulsion with IC50 = 0.12 mg/ml, G′ = 606.65 Pa and CI = 1.45%. These values were successfully validated with their respective experimental values.

Monday, November 11, 2019

Propolis an Eco-Friendly Antibacterial Coating for Wound Sutures

Characterization of silk sutures coated with propolis and biogenic silver nanoparticles (AgNPs); an eco-friendly solution with wound healing potential against surgical site infections (SSIs)

Turk J Med Sci. 2019 Oct 27

BACKGROUND/AIM:

Bacterial adherence to a suture material is one of the main reasons that cause surgical site infections. An antibacterial suture material with enhanced wound healing function may prevent the surgical site from infections. Thus, the present study was aimed to investigate the synergistic effect of propolis and biogenic metallic nanoparticles when combined with silk sutures for biomedical use.

MATERIALS AND METHODS:

Silver nanoparticle (AgNP) synthesis was carried out via a microbial-mediated biological route and impregnated on propolis-loaded silk sutures using an in situ process. silk sutures fabricated with propolis and biosynthesized AgNPs (bioAgNP-propolis coated sutures) were intensively characterized using Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS), Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC). Antibacterial characteristics of the bioAgNP-propolis coated sutures was evaluated using agar plate method. Biocompatibility of the bioAgNP-propolis coated sutures was evaluated using 3T3 fibroblast cells and their wound healing potential was also investigated.
RESULTS:

BioAgNP-propolis coated sutures displayed potent antibacterial activity against pathogenic Gram negative and Gram positive bacteria; Escherichia coli and Staphylococcus aureus, respectively. BioAgNP-propolis coated silk sutures were found to be biocompatible with 3T3 fibroblast cell culture. In vitro wound healing scratch assay was also demonstrated that the extract of bioAgNP-propolis coated sutures stimulated the 3T3 fibroblasts? cell proliferation.

CONCLUSION:

Coating the silk sutures with propolis and biogenic AgNPs gained an effective antibacterial capacity to surgical sutures besides providing biocompatibility and wound healing activity.

Friday, November 08, 2019

Honey and Its Combination with Metformin Prevents Hyperglycemia, Stimulates Insulin Secretion, Reduces Liver Fat Accumulation, Attenuates Liver Injury and Kidney Damage


Combination of honey with metformin enhances glucose metabolism and ameliorates hepatic and nephritic dysfunction in STZ-induced diabetic mice

Food Funct. 2019 Nov 5

Honey is a natural sweetener that contains a large amount of monosaccharides such as glucose and fructose, as well as small amounts of disaccharides and trisaccharides such as sucrose and pine trisaccharides. In addition to carbohydrates, honey also contains vitamins, minerals, enzymes, amino acids, and polyphenols including phenolic acids and flavonoids.

The polyphenols in honey have been proved to have great antioxidant activity, besides inhibiting α-glycosidase activity and improving blood-lipid metabolism. However, whether it is safe for diabetic patients to consume honey remains controversial.

This study investigated the effects of honey, metformin and their combination on the characteristic pathological changes and glucose metabolism in STZ-induced diabetic mice over five weeks.

Our results showed that honey and its combination with metformin could prevent hyperglycemia, stimulate insulin secretion, reduce liver fat accumulation, attenuate liver injury and kidney damage in STZ-induced diabetic mice.

Moreover, treatment with honey or combination of honey and metformin significantly enhanced glucokinase (GK) activity (p < 0.05), and meanwhile suppressed the activities of glucose-6-phosphatase (G6Pase), phosphoenolpyruvate carboxykinase (PEPCK), pyruvate carboxylase (PC) and pyruvate dehydrogenase kinases (PDK) (p < 0.05) in diabetic mice.

Thursday, November 07, 2019

Bee Venom Has Anticoagulant Properties

The anticoagulant effect of Apis mellifera phospholipase A2 is inhibited by CORM-2 via a carbon monoxide-independent mechanism

J Thromb Thrombolysis. 2019 Nov 2

Bee venom phospholipase A2 (PLA2) has potential for significant morbidity. Ruthenium (Ru)-based carbon monoxide releasing molecules (CORM) inhibit snake venoms that are anticoagulant and contain PLA2. In addition to modulating heme-bearing proteins with carbon monoxide, these CORM generate reactive Ru species that form adducts with histamine residues resulting in changes in protein function.

This study sought to identify anticoagulant properties of bee venom PLA2 via catalysis of plasma phospholipids required for thrombin generation. Another goal was to determine if Ru-based CORM inhibit bee venom PLA2 via carbon monoxide release or via potential binding of reactive Ru species to a key histidine residue in the catalytic site of the enzyme. Anticoagulant activity of bee venom PLA2 was assessed via thrombelastography with normal plasma.

Bee venom PLA2 was then exposed to different CORM and a metheme forming agent and anticoagulant activity was reassessed. Using Ru, boron and manganese-based CORM and a metheme forming agent, it was demonstrated that it was unlikely that carbon monoxide interaction with a heme group attached to PLA2 was responsible for inhibition of anticoagulant activity by Ru-based CORM. Exposure of PLA2 to a Ru-based CORM in the presence of histidine-rich human albumin resulted in loss of inhibition of PLA2.

Ru-based CORM likely inhibit bee venom PLA2 anticoagulant activity via formation of reactive Ru species that bind to histidine residues of the enzyme.

Tuesday, November 05, 2019

UMF Value a Not Reliable Indicator of Manuka Honey Antibacterial Activity

Antibacterial activity of varying UMF-graded Manuka honeys

PLoS One. 2019 Oct 25;14(10):e0224495

Honey has been used as a traditional remedy for skin and soft tissue infections due to its ability to promote wound healing. Manuka honey is recognized for its unusually abundant content of the antibacterial compound, methylglyoxal (MGO).

The Unique Manuka Factor (UMF) grading system reflects the MGO concentration in Manuka honey sold commercially. Our objective was to observe if UMF values correlated with the antibacterial activity of Manuka honey against a variety of pathogens purchased over the counter.

The antibacterial effect of Manuka honey with UMF values of 5+, 10+, and 15+ from the same manufacturer was assessed by the broth microdilution method. Minimum inhibitory concentration (MIC) values were determined against 128 isolates from wound cultures representing gram-positive, gram-negative, drug-susceptible, and multi-drug resistant (MDR) organisms.

Lower MICs were observed with UMF 5+ honey for staphylococci (n = 73, including 25 methicillin-resistant S. aureus) and Pseudomonas aeruginosa (n = 22, including 10 MDR) compared to UMF 10+ honey (p < 0.05) and with UMF 10+ compared to UMF 15+ (p = 0.01). For Enterobacteriaceae (n = 33, including 14 MDR), MIC values were significantly lower for UMF 5+ or UMF 10+ compared to UMF 15+ honey (p < 0.01). MIC50 for UMF 5+, UMF 10+, and UMF 15+ honey against staphylococci was 6%, 7%, and 15%, and for Enterobacteriaceae was 21%, 21%, and 27%, respectively.

For Pseudomonas aeruginosa MIC50 was 21% and MIC90 was 21-27% for all UMFs. Manuka honey exhibited antimicrobial activity against a spectrum of organisms including those with multi-drug resistance, with more potent activity overall against gram-positive than gram-negative bacteria.

Manuka honey with lower UMF values, in our limited sampling, paradoxically demonstrated increased antimicrobial activity among the limited samples tested, presumably due to changes in MGO content of honey over time. The UMF value by itself may not be a reliable indicator of antibacterial effect.

Friday, October 25, 2019

Honey May Help Prevent Osteoporosis, Promote Bone Health


A Review of Potential Beneficial Effects of Honey on Bone Health

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Evid Based Complement Alternat Med. 2019 Sep 19;2019:8543618

Bone remodelling is a complex and tightly regulated process. Disruption of bone remodelling skewing towards resorption will cause osteoporosis and increase the risk of fragility fracture. Honey is a natural product containing various bioactive ingredients with health benefits, especially polyphenols.

Therefore, honey may be a novel dietary supplement to prevent osteoporosis. This review aims to summarize the current evidence on the effects of honey on bone health. The evidence reported so far indicates a skeletal-beneficial effect of honey in animal models of osteoporosis. However, the number of studies on humans is limited.

Honey can protect the bone via its antioxidant and anti-inflammatory properties, primarily through its polyphenol content that acts upon several signalling pathways, leading to bone anabolic and antiresorptive effects.

In conclusion, honey is a potential functional food for bone health, but the dose and the bioactive contents of honey need to be verified prior to its application in humans.

Tuesday, October 22, 2019

Propolis Mouthwash More Effective Against Oral Bacteria Than Listerine


Evaluation of Antibacterial Effect of Propolis and its Application in Mouthwash Production

Front Dent. 2019 Jan-Feb;16(1):1-12

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Objectives:

Our purpose was to determine the antibacterial properties of propolis and to evaluate its use as an antibacterial mouthwash with minimal complications.

Materials and Methods:

In this experimental laboratory study, an alcoholic propolis extract was prepared. The minimum inhibitory concentration (MIC) was calculated for four bacterial species including Staphylococcus aureus (S. aureus), Streptococcus mutans (S. mutans), Lactobacillus acidophilus (L. acidophilus), and Enterococcus faecalis (E. faecalis) using agar dilution. According to the MIC, a propolis antibacterial mouthwash was produced and compared to water, chlorhexidine (CHX), and Listerine using laboratory rats for clinical examination. Salivary specimens of rats were collected at 12 hours, 1 week, and 2 weeks after using the mouthwash and examined by real-time polymerase chain reaction (RT-PCR). Data were analyzed using one-way analysis of variance (ANOVA) and repeated measures ANOVA (α = 0.05).

Results:

The results of agar dilution by the number of colony-forming units showed the lowest MIC for S. aureus and the highest for L. acidophilus. Our RT-PCR findings indicated that water alone had no effect on the level of oral bacteria. Propolis mouthwash showed a significant difference with CHX and Listerine (P < 0.05) in terms of the number of S. mutans, E. faecalis, and L. acidophilus colonies, while CHX and Listerine were less efficient. There was no significant difference between CHX and propolis (P = 0.110) regarding S. aureus colonies, but Listerine had a lower efficacy than either (P < 0.05).

Conclusion:

According to the results, propolis mouthwash was more efficient against the studied oral bacteria compared to CHX and Listerine.

Sunday, October 20, 2019

Propolis Boosts Healing of Diabetic Foot Wounds


Propolis as an Adjuvant in the Healing of Human Diabetic Foot Wounds Receiving Care in the Diagnostic and Treatment Centre from the Regional Hospital of Talca

J Diabetes Res. 2019 Sep 12;2019:2507578

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Objective:

Diabetic foot wounds are a relevant diabetes complication and a major health problem. It has been described that propolis has health benefits due to its anti-inflammatory, antioxidant, and support in the healing process. The current study assessed the effect of propolis as an adjuvant in the healing of human diabetic foot ulcers. This was evaluated in a randomized placebo-controlled study of subjects receiving care in the Diagnostic and Treatment Centre from the Regional Hospital of Talca, Chile.

Research Design and Methods:

Randomized subjects received ambulatory healing treatment for diabetes foot wounds with propolis spray (3%), which was applied to cover the entire wound surface each time it was dressed from week 0 until cicatrization or 8 weeks as a maximum. Two serum samples were taken (day 0 and end of the study) for cytokine and oxidative stress analyses. Also, macro- and microscopy were analyzed in the process of wound healing.

Results:

The study comprised 31 subjects with type 2 diabetes in treatment for diabetic foot wounds in the Diagnostic and Treatment Centre from the Regional Hospital of Talca. Propolis promotes a reduction of the wound's area by an average of 4 cm2, related to an increase in the connective tissue deposit compared to the control. Also, propolis increased the glutathione (GSH) and GSH/glutathione disulfide (GSSG) ratio (p < 0.02), depleted tumor necrosis factor- (TNF-) α, and increased interleukin- (IL-) 10 levels. Topical propolis did not modify the biochemical parameters in the serum of the studied subjects.

Conclusions:

The topical use of propolis turned out to be an interesting therapeutic strategy as an adjuvant in the care of diabetes foot wounds due to its ability to improve and promote healing based on its anti-inflammatory and antioxidant profile.

Saturday, October 19, 2019

Bee Pollen Protects Nervous System

The therapeutic and protective effects of bee pollen against prenatal methylmercury induced neurotoxicity in rat pups

Metab Brain Dis. 2019 Oct 17

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The current study evaluated the protective and therapeutic potency of bee pollen in ameliorating the toxic effects of methylmercury (MeHg), by measuring certain biochemical parameters related to neurotransmission, neuroinflammation, apoptosis, and glutamate excitotoxicity in the male neonate brain.

Healthy, pregnant female rats (N = 40) were randomly divided into 5 groups, each comprising10 male neonates, as follows: (i) neonates delivered by control mothers; (ii) neonates delivered by MeHg-treated mothers who received 0.5 mg/kg BW/day MeHg via drinking water from gestational day 7 till postnatal day 7; (iii) neonates delivered by bee pollen treated mothers who received 200-mg/kg BW bee pollen from postnatal day 0 for 4 weeks; (iv) protective group of neonates delivered by MeHg and bee pollen-treated mothers, who continued to receive bee pollen until day 21 at the same dose, and (v) therapeutic group of neonates delivered by MeHg- treated mothers followed by bee pollen treatment, wherein they received 200-mg/kg BW bee pollen from postnatal day 0 for 4 weeks.

Selected biochemical parameters in brain homogenates from each group were measured. MeHg-treated groups exhibited various signs of brain toxicity, such as a marked reduction in neurotransmitters (serotonin (5-HT), nor-adrenalin (NA), dopamine (DA)) and gamma aminobutyric acid (GABA) and elevated levels of interferon gamma (IFN-γ), caspase-3, and glutamate (Glu). Bee pollen effectively reduced the neurotoxic effects of MeHg. Minimal changes in all measured parameters were observed in MeHg-treated animals compared to the control group.

Therefore, bee pollen may safely improve neurotransmitter defects, inflammation, apoptosis, and glutamate excitotoxicity.

Thursday, October 17, 2019

Iranian Propolis Inhibits Cancer Cell Growth


Iranian propolis efficiently inhibits growth of oral streptococci and cancer cell lines

BMC Complementary and Alternative Medicine 

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Background

Propolis is a natural bee product with a wide range of biological activities that are related to its chemical composition. The present study investigated the quantification of quercetin (Q) in Ardabil ethanol extract of propolis (AEEP), and then compared its anti-bacterial, anti- biofilm and cytotoxic effects on cancer and normal cell lines.

Method

In the present study, the chemical composition of AEEP was determined through the high-performance liquid chromatography (HPLC). The AEEP and its main component, quercetin (Q), were evaluated in vitro against 57 oral streptococci by a broth micro-dilution method. The biofilm formation was assessed through the crystal violet staining and MTT assays. The impact of AEEP and Q anti-proliferative effect were evaluated on the fibroblast as normal and cancer cell lines (KB and A431).

Results

The Q concentration in the composition of AEEP was 6.9% of all its components. The findings indicated that the AEEP and Q were efficient against the cariogenic bacteria and were able to inhibit the S.mutans biofilm adherence at a sub-MIC concentration. Moreover, electron micrographs indicated the inhibition of biofilms compared to control biofilms. In addition, the AEEP and Q indicated a dose-dependent cytotoxic effect on A431 and KB cell lines. On the contrary, they had no cytotoxic effect on fibroblast cells.

Conclusion

The results indicated that the synergistic impact of main components of AEEP was related to the inhibition of the cancer cell proliferation, cariogenic bacteria and oral biofilm formation. It may play a promising role in the complementary medicine and, it is suggested to be used as food additives.

Wednesday, October 16, 2019

Propolis Helps Treat Diabetic Foot Wounds


Propolis as an Adjuvant in the Healing of Human Diabetic Foot Wounds Receiving Care in the Diagnostic and Treatment Centre from the Regional Hospital of Talca

J Diabetes Res. 2019 Sep 12;2019:2507578

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Objective:

Diabetic foot wounds are a relevant diabetes complication and a major health problem. It has been described that propolis has health benefits due to its anti-inflammatory, antioxidant, and support in the healing process. The current study assessed the effect of propolis as an adjuvant in the healing of human diabetic foot ulcers. This was evaluated in a randomized placebo-controlled study of subjects receiving care in the Diagnostic and Treatment Centre from the Regional Hospital of Talca, Chile.

Research Design and Methods:

Randomized subjects received ambulatory healing treatment for diabetes foot wounds with propolis spray (3%), which was applied to cover the entire wound surface each time it was dressed from week 0 until cicatrization or 8 weeks as a maximum. Two serum samples were taken (day 0 and end of the study) for cytokine and oxidative stress analyses. Also, macro- and microscopy were analyzed in the process of wound healing.

Results:

The study comprised 31 subjects with type 2 diabetes in treatment for diabetic foot wounds in the Diagnostic and Treatment Centre from the Regional Hospital of Talca. Propolis promotes a reduction of the wound's area by an average of 4 cm2, related to an increase in the connective tissue deposit compared to the control. Also, propolis increased the glutathione (GSH) and GSH/glutathione disulfide (GSSG) ratio (p < 0.02), depleted tumor necrosis factor- (TNF-) α, and increased interleukin- (IL-) 10 levels. Topical propolis did not modify the biochemical parameters in the serum of the studied subjects.

Conclusions:

The topical use of propolis turned out to be an interesting therapeutic strategy as an adjuvant in the care of diabetes foot wounds due to its ability to improve and promote healing based on its anti-inflammatory and antioxidant profile.

Tuesday, October 15, 2019

Combined Protective Effects of Malaysian Propolis and Metformin Improve Diabetic Male Fertility


Oxidative Stress, NF-κB-Mediated Inflammation and Apoptosis in the Testes of Streptozotocin-Induced Diabetic Rats: Combined Protective Effects of Malaysian Propolis and Metformin

Antioxidants (Basel). 2019 Oct 9;8(10). pii: E465

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Oxidative stress, inflammation and apoptosis are major complications that trigger organ failure in diabetes mellitus (DM), and are proven to adversely affect the male reproductive system.

Clinical and experimental studies have demonstrated the promising protective effects of propolis in DM and its associated systemic effects. Herein, we investigated the effect of Malaysian propolis (MP) on testicular oxidative stress, inflammation and apoptosis in diabetic rats. Further, the possibility of a complementary effect of MP with the anti-hyperglycaemic agent, metformin (Met), was studied with the idea of recommending its use in the event that Met alone is unable to contain the negative effects of DM on the male reproductive system in mind. Male Sprague-Dawley rats were either gavaged distilled water (normoglycaemic control and diabetic control groups), MP (diabetic rats on MP), Met (diabetic rats on Met) or MP+Met (diabetic rats on MP+Met), for 4 weeks. MP decreased oxidative stress by up-regulating (p < 0.05) testicular mRNA levels of nuclear factor erythroid 2-related factor 2, superoxide dismutase, catalase and glutathione peroxidase; increasing (p < 0.05) the activities of antioxidant enzymes; and decreasing (p < 0.05) lipid peroxidation in the testes and epididymis of diabetic rats.

Further, MP down-regulated (p < 0.05) testicular mRNA and protein levels of pro-inflammatory mediators (nuclear factor kappa B, inducible nitric oxide synthase, tumour necrosis factor-α and interleukin (IL)-1β), decreased (p < 0.05) the nitric oxide level, and increased (p < 0.05) IL-10 mRNA and protein levels. MP also down-regulated (p < 0.05) Bax/Bcl-2, p53, casapase-8, caspase-9 and caspase-3 genes, and increased (p < 0.05) testicular germ cell proliferation. MP's effects were comparable to Met. However, the best results were achieved following co-administration of MP and Met.

Therefore, we concluded that administration of the MP+Met combination better attenuates testicular oxidative stress, inflammation and apoptosis in DM, relative to MP or Met monotherapy, and may improve the fertility of males with DM.

Monday, October 14, 2019

Gelam Honey Promotes Corneal Wound Healing


Gelam honey promotes ex vivo corneal fibroblasts wound healing

Cytotechnology. 2019 Oct 12

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This study evaluated the effects of Gelam honey (GH) on ex vivo corneal fibroblast ulcer model via wound healing assay, gene expression and immunocytochemistry.

Corneal fibroblasts from New Zealand white rabbits were culture expanded. The corneal fibroblast wound healing capacity was observed by creating a circular wound onto confluent monolayer cells cultured in basal medium (BM), BM with GH, serum-enriched basal medium (BMS) and BMS with GH respectively.

Wound healing assay and phenotypic characterization of the corneal fibroblast were performed at different stages of wound closure. Expression of aldehyde dehydrogenase (ALDH), vimentin, α-smooth muscle actin (α-SMA), lumican, collagen I and matrix metalloproteinase 12 (MMP 12) were measured at day 1, day 3 and complete wound closure day. Corneal fibroblast cultured in BMS with GH demonstrated the fastest wound closure, at day 5 post wounding.

The gene expressions of ALDH and vimentin were higher than control groups while α-SMA expression was lower, in GH enriched media. The expressions of lumican, collagen I and MMP 12 were also higher in cells cultured in GH enriched media compared to the control groups.

GH was shown to promote in vitro corneal fibroblast wound healing and may be a potential natural adjunct in the treatment of corneal wound.

Wednesday, October 09, 2019

Bee Venom Component May Help Restore Memory in Alzheimer’s Disease (Aging, Ageing, Dementia, Brain, Mental, Cognitive)


Bee venom phospholipase A2 ameliorates amyloidogenesis and neuroinflammation through inhibition of signal transducer and activator of transcription-3 pathway in Tg2576 mice

Transl Neurodegener. 2019 Oct 2;8:26

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Background:

Neuroinflammation and accumulation of β-amyloid (Aβ) play a significant role in the onset and progression of Alzheimer's disease (AD). Our previous study demonstrated that signal transducer and activator of transcription-3 (STAT3) plays a major role in neuroinflammation and amyloidogenesis.

Methods:

In the present study, we investigated the inhibitory effect of bee venom phospholipase A2 (bvPLA2) on memory deficiency in Tg2576 mice, which demonstrate genetic characteristics of AD and the mechanism of its action at the cellular and animal level. For in vivo study, we examined the effect of bvPLA2 on improving memory by conducting several behavioral tests with the administration of bvPLA2 (1 mg/kg) to Tg2576 mice. For in vitro study, we examined the effect of bvPLA2 on amyloidogenesis and neuroinflammation by treating bvPLA2 on LPS-activated BV2 cells.

Results:

We found that bvPLA2 alleviated memory impairment in Tg2576 mice, as demonstrated in the behavioral tests assessing memory. In the bvPLA2-treated group, Aβ, amyloid precursor protein (APP), and β-secretase 1 (BACE1) levels and β-secretase activity were significantly decreased. Expression of pro-inflammatory cytokines and inflammation-related proteins decreased in the brain of bvPLA2-treated group, whereas anti-inflammatory cytokines increased. In addition, bvPLA2 reduced STAT3 phosphorylation in the brains of the bvPLA2-treated group. At the cellular level, bvPLA2 inhibits production of nitric oxide, pro-inflammatory cytokines, and inflammation-related proteins including p-STAT3. Additionally, bvPLA2 inhibits the production of Aβ in cultured BV-2 cells. Results from the docking experiment, pull-down assay, and the luciferase assay show that bvPLA2 directly binds STAT3 and, thus, regulates gene expression levels. Moreover, when the STAT3 inhibitor and bvPLA2 were administered together, the anti-amyloidogenic and anti-inflammatory effects were further enhanced than when they were administered alone.

Conclusion:

These results suggest that bvPLA2 could restore memory by inhibiting the accumulation of Aβ and inflammatory responses via blockage of STAT3 activity.

Tuesday, October 08, 2019

Propolis Prevents Damage to the Liver


Protective Role of Propolis on Low and High Dose Furan-induced Hepatotoxicity and Oxidative Stress in Rats

J Vet Res. 2019 Sep 13;63(3):423-431

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Introduction:

The aim of this study was to evaluate potential protective effects of propolis on furan-induced hepatic damage by assessing the levels of malondialdehyde (MDA) and reduced glutathione (GSH), antioxidant enzyme activities, and histopathological changes in the liver.

Material and Methods:

Albino Wistar rats were divided into six groups: a control, propolis-treated (100 mg/kg b.w./day), low-dose furan-treated (furan-L group; 2 mg/kg b.w./day), high-dose furan-treated (furan-H group; 16 mg/kg b.w./day), furan-L+propolis treated, and furan-H+propolis treated group. Propolis and furan were applied by gavage; propolis for 8 days, and furan for 20 days in furan-L groups and 10 days in furan-H groups.

Results:

While MDA levels were elevated in furan-treated groups, levels of GSH and activities of antioxidant enzymes decreased (p < 0.001). The levels of MDA and GSH and activities of antioxidant enzymes were normal in the furan+propolis groups, especially in the furan-L+propolis group (p < 0.001). While the aspartate transaminase, alanine transaminase, alkaline phosphatase, and lactate pdehydrogenase activities were elevated in the furan-H treated group (p < 0.05 and p < 0.001), they were unchanged in the furan-L treated group. Histopathologically, several lesions were observed in the liver tissues of the furan-treated groups, especially in the higher-dose group. It was determined that these changes were milder in both of the furan+propolis groups.

Conclusion:

The results indicate that propolis exhibits good hepatoprotective and antioxidant potential against furan-induced hepatocellular damage in rats.

Monday, October 07, 2019

MGO™ Manuka Honey Inhibits Infectious Diseases

Oligosaccharides Isolated from MGO™ Manuka Honey Inhibit the Adhesion of Pseudomonas aeruginosa, Escherichia Coli O157:H7 and Staphylococcus Aureus to Human HT-29 cells

Foods. 2019 Oct 1;8(10). pii: E446

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Historically, honey is known for its anti-bacterial and anti-fungal activities and its use for treatment of wound infections.

Although this practice has been in place for millennia, little information exists regarding which manuka honey components contribute to the protective nature of this product. Given that sugar accounts for over 80% of honey and up to 25% of this sugar is composed of oligosaccharides, we have investigated the anti-infective activity of manuka honey oligosaccharides against a range of pathogens.

Initially, oligosaccharides were extracted from a commercially-available New Zealand manuka honey-MGO™ Manuka Honey (Manuka Health New Zealand Ltd)-and characterized by High pH anion exchange chromatography coupled with pulsed amperiometric detection. The adhesion of specific pathogens to the human colonic adenocarcinoma cell line, HT-29, was then assessed in the presence and absence of these oligosaccharides. Manuka honey oligosaccharides significantly reduced the adhesion of Escherichia coli O157:H7 (by 40%), Staphylococcus aureus (by 30%), and Pseudomonas aeruginosa (by 52%) to HT-29 cells. This activity was then proven to be concentration dependent and independent of bacterial killing.

This study identifies MGO™ Manuka Honey as a source of anti-infective oligosaccharides for applications in functional foods aimed at lowering the incidence of infectious diseases.

Saturday, October 05, 2019

Swiss Honeydew Honey Shows Higher Antibacterial Activity


Antibacterial potential of Swiss honeys and characterisation of their bee-derived bioactive compounds

J Sci Food Agric. 2019 Oct 4

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BACKGROUND:

Antibacterial activity of honey is not only crucial characteristic in selection of honey for medical usage but also an important honey quality marker. The aim of the study was to characterize the antibacterial potential of 29 honey samples representing the main types of multi-floral blossom and honeydew honeys produced in Switzerland. Antibacterial activity against Staphylococcus aureus and Pseudomonas aeruginosa was expressed as a minimum inhibitory and bactericidal concentrations (MIC and MBC). Furthermore, the content of bee derived glucose oxidase (GOX) and its enzymatic product, H2 O2 , were also evaluated.

RESULTS:

All honey samples successfully met basic defined criteria (moisture and hydroxymethylfurfural (HMF)) tested in this study. Honeydew honeys were the most effective honey samples and generated the highest levels of H2 O2 . A strong significant correlation was found between the overall antibacterial activity and the level of H2 O2 among all honey samples. Interestingly, the content of GOX in honey samples did not correlate with their antibacterial activity as well as H2 O2 production capacity. A weak antibacterial activity was determined in 5 floral honeys, most likely due to increased enzymatic activity of pollen-derived catalase.

CONCLUSION:

This study showed that antibacterial effect of Swiss honey samples is associated mainly with H2 O2 .

Friday, October 04, 2019

Brazilian Propolis Protects Against Risk Factor for Aging (Anti-Aging)


The Protective Effect of Brazilian Propolis against Glycation Stress in Mouse Skeletal Muscle

Foods. 2019 Sep 25;8(10). pii: E439

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We investigated the protective effect of Brazilian propolis, a natural resinous substance produced by honeybees, against glycation stress in mouse skeletal muscles. Mice were divided into four groups: (1) Normal diet + drinking water, (2) Brazilian propolis (0.1%)-containing diet + drinking water, (3) normal diet + methylglyoxal (MGO) (0.1%)-containing drinking water, and (4) Brazilian propolis (0.1%)-containing diet + MGO (0.1%)-containing drinking water. MGO treatment for 20 weeks reduced the weight of the extensor digitorum longus (EDL) muscle and tended to be in the soleus muscle.

Ingestion of Brazilian propolis showed no effect on this change in EDL muscles but tended to increase the weight of the soleus muscles regardless of MGO treatment. In EDL muscles, Brazilian propolis ingestion suppressed the accumulation of MGO-derived advanced glycation end products (AGEs) in MGO-treated mice. The activity of glyoxalase 1 was not affected by MGO, but was enhanced by Brazilian propolis in EDL muscles. MGO treatment increased mRNA expression of inflammation-related molecules, interleukin (IL)-1β, IL-6, and toll-like receptor 4 (TLR4). Brazilian propolis ingestion suppressed these increases. MGO and/or propolis exerted no effect on the accumulation of AGEs, glyoxalase 1 activity, and inflammatory responses in soleus muscles.

These results suggest that Brazilian propolis exerts a protective effect against by inhibiting the accumulation of AGEs, promoting MGO detoxification, and reducing proinflammatory responses in the skeletal muscle. However, these anti-glycation effects does not lead to prevent glycation-induced muscle mass reduction.

Monday, September 30, 2019

Turkish Honeydew Honey May Help Prevent Cancer


Quercus pyrenaica Honeydew Honey With High Phenolic Contents Cause DNA Damage, Apoptosis, and Cell Death Through Generation of Reactive Oxygen Species in Gastric Adenocarcinoma Cells

Integr Cancer Ther. 2019 Jan-Dec;18:1534735419876334

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Many studies have shown that honey with high phenolic contents prevents cancer formation.
Furthermore, recent studies have demonstrated that honey can be used for the treatment of cancer as well as cancer prevention. Antineoplastic effects of honey are often associated with their antioxidant phenolic contents. However, very few studies have dealt with the association of phenolic contents of honeys in terms of antiproliferative effects.

The aim of this study was, therefore, to elucidate the cytotoxic, genotoxic, apoptotic, and reactive oxygen species (ROS) generating effects of honey samples on the basis of their phenolic and flavonoid contents.

Fourteen different honey varieties were collected from various parts of Turkey, and their characteristics regarding total phenols, flavonoids, and antioxidant contents were determined to test their effects on gastric cancer cells (AGS). For convenience, 2 honey varieties were selected, namely, Ida Mountains Quercus pyrenaica honeydew honey (QPHH-IM) having the highest phenolic and antioxidant content and Canakkale multifloral honey (MFH-C) with the lowest phenolic and antioxidant content.

Levels of 11 different phenolic compounds in QPHH-IM and MFH-C samples were determined by LC-MS/MS. AGS cells were incubated with different concentrations of QPHH-IM and MFH-C for 24 hours, then the cell viability, DNA damage, apoptosis, and generation of ROS were determined.

We found that QPHH-IM had more cytotoxic, genotoxic, and apoptotic effects than that of MFH-C.

We think that these effects are probably related to pro-oxidant activities due to the high phenolic contents present. Therefore, further research on high-phenolic honey may contribute to the future development of cancer therapeutics.

Sunday, September 29, 2019

Propolis May Help Prevent Infertility

The propolis and boric acid can be highly suitable, alone/or as a combinatory approach on ovary ischemia-reperfusion injury

Arch Gynecol Obstet. 2019 Sep 23

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PURPOSE:

Ovarian ischemia-reperfusion (IR) damage continues to be a serious infertility problem. The oxidative stress plays central role in the development of IR injuries. Activation of antioxidants decreases IR injuries; however, the efficacy of antioxidant agents remains controversial. Unfortunately, there has been no evidence for medicinal use of boric acid (BA) and propolis (Prop) on ovarian IR injury on rats so far. This study will provide to reveal the potential applications of the Prop and BA in ovarian IR therapy.

METHODS:

The Sprague-Dawley rats were randomized into five groups: I-control, II-IR, 3 h of ischemia and 3 h of reperfusion, III and IV-a signal dose of oral BA (7 mg/kg) and Prop (100 mg/kg) alone 1 h before induction of IR, V-Prop and BA together 1 h before induction of IR. SOD (superoxide dismutase), CAT (catalase), GSH (glutathione), MPO (myeloperoxidase), MDA (malondialdehyde), and IL-6 (interleukin-6) levels were quantified by ELISA and the TNF-α (tumor necrosis factor-α), 8-OHdG (8-hydroxylo-2'-deoxyguanosin) and Caspase-3 expressions were performed by immunohistochemical analyses.

RESULTS:

BA and Prop pretreatment significantly reduced MPO, MDA, and IL-6 levels and pathologic score in IR rats, with no effects in control group. These agents used in therapy also decreased TNF-α, 8-OHdG and Caspase-3 protein expressions increased by IR. Furthermore, BA and Prop combination showed significant ameliorative effects on ovary injury caused by IR through acting as an antioxidant, anti-inflammatory and antiapoptotic agent.

CONCLUSION:

BA and Prop alone and especially in combination could be developed as therapeutic agents against ovary IR injury.

Thursday, September 26, 2019

Propolis Protects Against Intestinal Damage Caused by Diabetes


Propolis modulates the gut microbiota and improves the intestinal mucosal barrier function in diabetic rats

Biomed Pharmacother. 2019 Oct;118:109393

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OBJECTIVE:

Diabetes mellitus is associated with gut microbiota disturbance and intestinal mucosal injuries. This study investigated the influence of propolis on the gut microbiota and intestinal mucosa in rats with diabetes.

METHODS:

Sprague-Dawley (SD) rats were randomly assigned to the control group, model group, and three propolis groups (supplemented with 80, 160, and 240 mg/kg·bw propolis, respectively). A high-fat diet combined with a streptozotocin (STZ) abdominal injection were used to induce diabetes in the rats. After 4 weeks, the intestinal histopathological analysis of the ileum was observed by transmission electron microscopy. The fasting blood glucose (FBG), plasma insulin, glucose tolerance (OGTT) and glycosylated hemoglobin (HbA1c) levels were measured. The expression of tight junction (TJ) proteins in the ileum was measured using western blotting. The molecular ecology of the fecal gut microbiota was analyzed by 16S rDNA high-throughput sequencing. The contents of the short-chain fatty acids (SCFAs) in feces were measured using high-performance liquid chromatography (HPLC).

RESULTS:

After propolis treatment, compared to the model group, FBG and HbA1c levels declined, while the glucose tolerance and insulin sensitivity index (ISI) increased. The levels of TJ proteins in the ileum increased in the propolis groups. The tight junctions and gap junctions of the intestinal epithelium were also improved in the propolis groups. The contents of the feces acetic acid, propionic acid and butyrate were increased in the propolis groups. 16S rDNA high-throughput sequencing revealed that the composition of the gut microbiota of rats in the propolis supplement group was significantly improved.

CONCLUSIONS:

Compared to the model group, propolis exerted hypoglycemic effects in diabetic rats, and it repaired intestinal mucosal damage, benefited the communities of the gut microbiota and increased SCFA levels in diabetic rats.

Monday, September 23, 2019

Propolis Helps Treat Menstrual Cramps (heavy flow, uterine fibroids, endometriosis primary dysmenorrhea, menstruation)


The effect of bee prepolis on primary dysmenorrhea: a randomized clinical trial

Obstet Gynecol Sci. 2019 Sep;62(5):352-356

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Objective:

Primary dysmenorrhea typically occurs with no associated pelvic pathology and is common in adolescents and young women. This study evaluated the effect of bee propolis on relief of primary dysmenorrhea.

Methods:

The study was performed in 2018 in Hamadan, in western Iran, among female students with primary dysmenorrhea. Participants were randomly divided into two groups, using balanced block randomization, and were administered a placebo or bee propolis capsules for 5 days during two menstruation cycles. The number of participants required was estimated to be 86 in total, with 43 students in each group according to the inclusion criteria. We used the visual analog scale to assess pain severity. The independent t-test was conducted for comparing between two groups, using SPSS 16.0.

Results:

A significant change was found in the mean pain scores during the first (P < 0.001) and second (P < 0.001) months after using bee propolis in comparison with placebo. The means of the pain scores in the bee propolis group were 5.32±2.28 and 4.74±2.40 in first and second months after the intervention, respectively, whereas the means of the pain scores in the placebo group were 7.40±1.21 and 7.17±1.24 in first and second months after the intervention, respectively.

Conclusion:

Our study showed that the use of bee propolis for two months compared with placebo reduced primary dysmenorrhea during the first and second months after use, with no adverse effects. Therefore, it could be used as an alternative to nonsteroidal anti-inflammatory drugs for relief of primary dysmenorrhea.

Thursday, September 19, 2019

Malaysian Tualang Honey Inhibits Vascular Hyperpermeability

Malaysian Tualang Honey Inhibits Hydrogen Peroxide-Induced Endothelial Hyperpermeability

Oxid Med Cell Longev. 2019 Aug 18;2019:1202676

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Malaysian Tualang honey (TH) is a known therapeutic honey extracted from the honeycombs of the Tualang tree (Koompassia excelsa) and has been reported for its antioxidant, anti-inflammatory, antiproliferative, and wound healing properties.

However, the possible vascular protective effect of TH against oxidative stress remains unclear. In this study, the effects of TH on hydrogen peroxide- (H2O2-) elicited vascular hyperpermeability in human umbilical vein endothelial cells (HUVECs) and Balb/c mice were evaluated. Our data showed that TH concentrations ranging from 0.01% to 1.00% showed no cytotoxic effect to HUVECs. Induction with 0.5 mM H2O2 was found to increase HUVEC permeability, but the effect was significantly reversed attenuated by TH (p < 0.05), of which the permeability with the highest inhibition peaked at 0.1%.

In Balb/c mice, TH (0.5 g/kg-1.5 g/kg) significantly (p < 0.05) reduced H2O2 (0.3%)-induced albumin-bound Evans blue leak, in a dose-dependent manner. Immunofluorescence staining confirmed that TH reduced actin stress fiber formation while increasing cortical actin formation and colocalization of caveolin-1 and β-catenin in HUVECs. Signaling studies showed that HUVECs pretreated with TH significantly (p < 0.05) decreased intracellular calcium release, while sustaining the level of cAMP when challenged with H2O2.

These results suggested that TH could inhibit H2O2-induced vascular hyperpermeability in vitro and in vivo by suppression of adherence junction protein redistribution via calcium and cAMP, which could have a therapeutic potential for diseases related to the increase of both oxidant and vascular permeability.