1. Edema, hyperalgesia and myonecrosis induced by Brazilian bothropic venoms: overview of the last decade.
- Author
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Mamede, Carla Cristine Neves, de Sousa Simamoto, Bruna Barbosa, da Cunha Pereira, Deborah Fernanda, de Oliveira Costa, Júnia, Ribeiro, Mariana Santos Matias, and de Oliveira, Fabio
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VENOM , *SNAKE venom , *ANTIVENINS , *EDEMA , *PHOSPHOLIPASES , *BOTHROPS , *AMINO acid oxidase - Abstract
Snakebite accidents are considered serious public health problems. They are often neglected, and individuals who have received insufficient treatment are subjected to various disabling alterations. Snake venoms are secretions composed of biologically active molecules capable of triggering local and systemic effects in envenomation victims. Bothropic snakes are responsible for most of the ophidian accidents in Brazil; their venoms are mainly related to local manifestations, due to a composition that is especially rich in proteases and phospholipases A 2. The most common local damages are inflammation, with consequent cellular activation and release of inflammatory mediators, hemorrhage, edema, pain and (myo)necrosis, which may lead to amputation of the affected areas. Antivenom therapy is the main treatment for snakebites. However, the efficiency is mainly due to the neutralization of the toxins responsible for the systemic alterations. Thus, the local damages can evolve to markedly compromise the tissue. The complexity of these local effects associated with the toxicity of the snake venom components of the genus Bothrops , arouse interest in the study of the biochemical and pathophysiological mechanisms involved with the actions caused by toxins of the venom. Therefore, this review aims to analyze the edematogenic, hyperalgesic and myotoxic effects caused by Brazilian bothropic venoms in order to contribute to the study and elucidation of the mechanisms of action of its components and, consequently, enable discoveries of more effective combined therapies in the treatment of local damages resulting from envenoming. • Bothropic snakes are responsible for most of the ophidian accidents in Brazil. • Bothropic envenomation presents serious local damage. • We analysed the local effects caused by Brazilian bothropic venoms and isolated proteins. • Most bothropic venoms and many isolated proteins cause significant edema, hyperalgesia and/or myonecrosis. • Phospholipases and proteases are the components that most contribute to the local effects of bothropic venom. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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