Effects of Iranian Snakes Venom True Sea and Terrestrial Snakes on Some Bacterial Cultures
Authors
Abstract:
The antibacterial activities of eight snake crude venom (Macrovipera lebetina obtusa, Pseudocerastes persicus, Pseudocerastes urarachnoides, Echis carinatus sochureki, Gloydius halys caucasicus, Naja (naja) oxiana, and two species of true sea snakes Enhydrina schistose and Hydrophis cyanocinctus) were assessed against five important standard pathogenic bacterial strains (Escherichia coli, Staphylococcus aureus, Enterococcus faecalis, vancomycin resistant Enterococcus faecium and Streptococcus pneumoniae). Broth micro-dilution method, standard disk diffusion assay and bio-autography based on polyacrylamide gel electrophoresis were used for this purpose. Snake venom revealed inhibitory effects against S. aureus and E. faecium strains. The moderate effects on S. aureus were showed by venomof P. urarachnoides, P. persicus and N. oxiana with MIC values of 20, 10 and 10 μg/ml respectively. Moreover, venom of E.carinatus, M.lebetina and G. halys showed strong effects (MICs= 40, 80, 160 μg/ml) respectively. In the case of E. faecium tested strain, the best inhibitory effects were exhibited by venom of P. persicus, P.urarachnoides, N. oxiana and M. lebetina (MIC= 10 μg/ml). According to the MIC values and inhibition zones in disk diffusion assays, the strongest antibacterial activity belonged to P. persicus and P. urarachnoides venoms.
similar resources
Venom yields from Australian and some other species of snakes.
The wet and dry venom yields for most Australian native dangerous snakes and a number of non-Australian species are presented. Snakes from the Pseudonaja genus yielded higher than previously published amounts and suggest reconsideration be given to increasing the volume of antivenom in each vial. Higher percentage solids were obtained from venoms from the 4 cobra species (Naja) and Pseudechis g...
full textGenetic monandry in 6 viviparous species of true sea snakes.
Using a suite of 10 highly variable microsatellite loci, we conducted genetic paternity analyses for 76 embryos in the broods of 12 pregnant females representing 6 viviparous species of true sea snakes (Hydrophis clade) in the family Elapidae. To our surprise, we uncovered no evidence for multiple paternity within any of the clutches despite the fact that the genetic markers showed high intrasp...
full textEffects of oceanic salinity on body condition in sea snakes.
Since the transition from terrestrial to marine environments poses strong osmoregulatory and energetic challenges, temporal and spatial fluctuations in oceanic salinity might influence salt and water balance (and hence, body condition) in marine tetrapods. We assessed the effects of salinity on three species of sea snakes studied by mark-recapture in coral-reef habitats in the Neo-Caledonian La...
full textthe effects of planning on accuracy and complexity of iranian efl students’ written narrative task performance
this study compared the different effects of form-focused guided planning vs. meaning-focused guided planning on iranian pre-intermediate students’ task performance. the study lasted for three weeks and concentrated on eight english structures. forty five pre-intermediate iranian students were randomly assigned to three groups of guided planning focus-on-form group (gpfg), guided planning focus...
15 صفحه اولPelagic sea snakes dehydrate at sea.
Secondarily marine vertebrates are thought to live independently of fresh water. Here, we demonstrate a paradigm shift for the widely distributed pelagic sea snake, Hydrophis (Pelamis) platurus, which dehydrates at sea and spends a significant part of its life in a dehydrated state corresponding to seasonal drought. Snakes that are captured following prolonged periods without rainfall have lowe...
full textMy Resources
Journal title
volume 5 issue 18
pages 27- 36
publication date 2014-12
By following a journal you will be notified via email when a new issue of this journal is published.
Hosted on Doprax cloud platform doprax.com
copyright © 2015-2023