A new crotamine-like from the rattlesnake (Crotalus durissus cumanensis) venom causing damages: Qualitative and Quantitative Cytotoxic Studies on subcellular and neuromuscular structures ; Una nueva crotamina similar de la serpiente de cascabel (Crotalus durissus cumanensis) causante de daños: estudios citotóxicos cualitativos y cuantitativos en estructuras sub-celulares y neuromusculares

A quantitative model to expose the adrenal gland sub-cellular alterations produced by crotamine-like (C-L) from rattlesnake venom during 3, 6 and 24 hours (h), and also qualitative changes on mice neuromuscular structures in vivo were observed and calculated by transmission electron microscopy. A pure crotamine-like (C-L) isoform was obtained using a cationic exchange chromatography column from the rattlesnake Crotalus durissus cumanensis venom. The C-L SDS-PAGE (15.5%) under non-reduced conditions exhibited a molecular mass of ~3 kDa single band. The C-L in vivo qualitative experiments induced ultrastructural changes in mouse neuromuscular structures at 3, 6 and 24 h, such as reduction in the number of acetylcholine vesicles, disorganisation of the secondary synaptic clefts, enlargement of the sub-sarcolemma space and alteration of the mitochondria morphology, number and cristae. Regarding neurotoxic actions in vivo, the animals injected with C-L presented spastic paralysis of the hind limbs. The quantitative alterations studied on the capillaries, the nucleus, the mitochondria the lipid inclusions, and the smooth endoplasmic reticulum were observed from 3 to 24 h after C-L injection. As far as it is known from the literature review, there are no quantitative records of similar sub-cellular alterations caused by crotamine. ; Se observó y calculó mediante microscopía electrónica de transmisión, un estudio cuantitativo para exponer las alteraciones subcelulares de la glándula suprarrenal producidas por crotamina-similar (C-L) del veneno de serpiente de cascabel, durante 3; 6 y 24 horas (h), y también los cambios cualitativos in vivo en las estructuras neuromusculares de ratones. Se obtuvo una isoforma pura similar a la crotamina (C-L) usando una columna de cromatografía de intercambio catiónico del veneno de Crotalus durissus cumanensis. La SDS-PAGE (15,5%) de la C-L en condiciones no reducidas exhibió una masa molecular de ∼3 kDa de banda única. Los experimentos cualitativos in vivo de C-L indujeron cambios ...