Jiang Y, Liu W, Zhong G G, Yang S J, Zhang W J, Wei J J, Zhang H J, Wang L
Central Laboratory of Physiology, Norman Bethune University of Medical Sciences, Changchun, China.
Zhongguo Yao Li Xue Bao. 1995 Mar;16(2):172-4.
To screen the active components of sodium channel blockade action from Buthus martensii Karsch (BMK) scorpion venom.
Myocardiocytes of mice were cultured. Action potentials of fast response myocardiocytes were recorded. The effects of 22 contents of BMK scorpion venom in a concentration of 3 mg.L-1 were tested and compared with that of TTX 2.5 mg.L-1, nimodipine (Nim) 3 mg.L-1 and BaCl2 24.4 mg.L-1.
BMK-1 and other 19 contents significantly decreased depolarization parameters Vmax, APA, OS, and MDP, which was similar to that of TTX and different from that of Nim and BaCl2.
The variations in the action potentials of fast response myocardiolcytes indicated that 20 contents of BMK scorpion venom had sodium channel blockade action.
