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Scorpion (Buthus tamulus) venom toxicity on cardiopulmonary reflexes involves kinins via 5-HT3 receptor subtypes J. Venom. Anim. Toxins
BAGCHI,S.; DESHPANDE,S. B..
The mechanisms underlying the action of Indian red scorpion Buthus tamulus (BT) venom-induced augmentation of cardiopulmonary reflexes elicited by intravenous injection of 5-HT were examined in urethane anaesthetized rats. The 5-HT produced a concentration-dependent increase in time-response area of bradycardiac response, with the responses at submaximal concentrations shifted to the left after exposure to BT venom (20 µg/kg, IV). Aprotinin (6000 kallikrein inactivating unit, IV) as such had no effect on 5-HT reflex responses (bradycardia, hypotension, and apnea), but blocked the venom-induced reflex augmentation. While ondansetron (10 µg/kg, IV) completely blocked the 5-HT reflex responses, these reappeared partially after venom exposure (20 µg/kg)....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bezold-Jarisch reflex; Aprotinin; Bradykinin; Indian red scorpion; Ondansetron; Buthus tamulus; Kinins; 5-HT3 receptors; Cardiopulmonary reflexes.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79302001000100003
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