Format

Send to

Choose Destination
Toxicon. 2016 Jul;117:37-45. doi: 10.1016/j.toxicon.2016.03.006. Epub 2016 Mar 11.

Comparative analysis of local effects caused by Bothrops alternatus and Bothrops moojeni snake venoms: enzymatic contributions and inflammatory modulations.

Author information

1
Instituto de Genética e Bioquímica, Universidade Federal de Uberlândia, 38400-902 Uberlândia, MG, Brazil; Instituto Nacional de Ciência e Tecnologia em Nano-Biofarmacêutica (N-Biofar), 31270-901 Belo Horizonte, MG, Brazil. Electronic address: carlacristinenm@yahoo.com.br.
2
Instituto de Genética e Bioquímica, Universidade Federal de Uberlândia, 38400-902 Uberlândia, MG, Brazil; Instituto Nacional de Ciência e Tecnologia em Nano-Biofarmacêutica (N-Biofar), 31270-901 Belo Horizonte, MG, Brazil.
3
Instituto de Genética e Bioquímica, Universidade Federal de Uberlândia, 38400-902 Uberlândia, MG, Brazil.
4
Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, 38400-902 Uberlândia, MG, Brazil; Instituto Nacional de Ciência e Tecnologia em Nano-Biofarmacêutica (N-Biofar), 31270-901 Belo Horizonte, MG, Brazil.

Abstract

Bothropic envenomation is characterised by severe local damage caused by the toxic action of venom components and aggravated by induced inflammation. In this comparative study, the local inflammatory effects caused by the venoms of Bothrops alternatus and Bothrops moojeni, two snakes of epidemiological importance in Brazil, were investigated. The toxic action of venom components induced by bothropic venom was also characterised. Herein, the oedema, hyperalgesia and myotoxicity induced by bothropic venom were monitored for various lengths of time after venom injection in experimental animals. The intensity of the local effects caused by B. moojeni venom is considerably more potent than B. alternatus venom. Our results also indicate that metalloproteases and phospholipases A2 have a central role in the local damage induced by bothropic venoms, but serine proteases also contribute to the effects of these venoms. Furthermore, we observed that specific anti-inflammatory drugs were able to considerably reduce the oedema, the pain and the muscle damage caused by both venoms. The inflammatory reaction induced by B. moojeni venom is mediated by eicosanoid action, histamine and nitric oxide, with significant participation of bradykinin on the hyperalgesic and myotoxic effects of this venom. These mediators also participate to inflammation caused by B. alternatus venom. However, the inefficient anti-inflammatory effects of some local modulation suggest that histamine, leukotrienes and nitric oxide have little role in the oedema or myotoxicity caused by B. alternatus venom.

KEYWORDS:

Bothrops alternatus; Bothrops moojeni; Inflammation; Phospholipases A(2); Proteases; Snake venom

PMID:
26975252
DOI:
10.1016/j.toxicon.2016.03.006
[Indexed for MEDLINE]
Free full text

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center