Effect of Mikania glomerata (Asteraceae) leaf extract combined with anti-venom serum on experimental Crotalus durissus (Squamata: Viperidae) envenomation in rats.
Crotalic envenomation represents the highest number of deaths when compared to other snakebite envenomations of medical interest. Crotalic venom has important characteristics such as neurotoxicity, myotoxicity, nephrotoxicity, and clotting and hemolytic action. We evaluated the clinical and laboratory aspects of Crotalus durissus terrificus experimental envenomation in Wistar rats treated with antivenom and the aqueous extract of the plant Mikania glomerata. The animals were divided into three groups: Group C (control); Group VS-venom and antivenom; Group VSM-venom, antivenom and aqueous extract of M. glomerata. Crotalic poison caused clinical and laboratory alterations in Wistar mice. Significant clinical alterations were: temperature decrease, edema in the venom inoculated member, sedation and a locomotion decrease in groups VS and VSM when compared with group C. A faster recovery from sedation was observed only for animals of group VSM when compared to VS. There was an increase in the number of leukocytes, neutrophils and creatine kinase in the VS and VSM groups, compared to group C. Wistar rats showed a high resistance to crotalic venom. Additional studies with different doses, time of treatment, different administration methods and histopathological and immunological studies are necessary to understand the action of M. glomerata in crotalic accidents.
Floriano
Rafael Stuani
RS
Animal Science, University of Western São Paulo-UNOESTE, SP, Brazil. rafael_stuani@hotmail.com
Nogueira
Rosa Maria Barilli
RM
Sakate
Michiko
M
Laposy
Cecília Braga
CB
da Motta
Yudney Pereira
YP
Sangiorgio
Fabíola
F
David
Heloísa Costa
HC
Nabas
João Marcelo
JM
D000818:Animals; D000997:Antivenins / Q000008:administration & dosage / Q000627:therapeutic use*; D003435:Crotalid Venoms / Q000037:antagonists & inhibitors* / Q000506:poisoning; D017839:Crotalus; D004359:Drug Therapy, Combination; D005260:Female; D035742:Mikania / Q000737:chemistry*; D010936:Plant Extracts / Q000008:administration & dosage / Q000627:therapeutic use*; D051381:Rats; D017208:Rats, Wistar; D013997:Time Factors
D000997:Antivenins; D003435:Crotalid Venoms; D010936:Plant Extracts