The Effects of Bee (Apis Mellifera) Venom Phospholipase A2 on Trypanosoma Brucei Brucei and EnterobacteriaExperimental Parasitology, Volume 119, Issue 2, June 2008, Pages 246-251
Abstract: The potential role of phospholipases in trypanosomiasis was investigated using bee venom phospholipase A2 (bvPLA2) as a model. The effects of bvPLA2 on the survival of Trypanosoma brucei brucei, 2 h and 12 h cultures of Enterobacter cloacae, Escherichia coli, Citrobacter freundii were studied.
About 1 mg ml−1 bvPLA2 was trypanocidal after 30 min. Some growth occurred at lower concentrations up to 2 h after treatment but viability decreased up to 8 h. Even very low concentrations of bvPLA2 (10−12 mg ml−1) had some trypanocidal activity. Bee venom PLA2 was bactericidal to 2 h bacterial cultures but bacteriostatic to 12 h ones. Minimum bactericidal concentrations were 10−5–10−6 mg ml−1.
The results showed that bvPLA2 had significant trypanocidal and antibacterial effects on Gram-negative bacteria. The relationship to events occurring during infection is discussed. Phospholipases may play a role in increased endotoxin levels in trypanosomiasis.
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