title: Acetylcholinesterase molecular forms in C57BL/6J dystrophic mice.
abstract: Acetylcholinesterase (AChE) was extracted from normal and dystrophic C57BL/6J mouse hindlimb muscles and its molecular forms fractionated by sucrose density gradient ultracentrifugation. In the soleus muscles from 6- to 7-week-old mice an increase in the 3 Svedberg unit (S) and a decrease in the 16S AChE molecular forms was observed in dystrophic animals compared to controls. At 12-13 weeks of age, no major significant differences in the relative proportions of AChE molecular forms were noted. In the extensor digitorum longus (EDL) muscles of 6- to 7-week-old dystrophic mice a significant decrease in the proportion of the 10S AChE molecular form and an increase in the 3S and 5S forms was observed. At 12-13 weeks, the dystrophic EDL muscles again displayed a decrease in the 10S form; however, the increase in the 3S and 5S AChE forms, while still apparent, was not significant. These results provide evidence for a biochemical abnormality in the distribution of specific AChE molecular forms, and a differential expression of this abnormality in the soleus and EDL muscles.
mesh_terms: D000110:Acetylcholinesterase / Q000235:genetics / Q000302:isolation & purification*; D000367:Age Factors; D000818:Animals; D002499:Centrifugation, Density Gradient; D007527:Isoenzymes / Q000235:genetics / Q000302:isolation & purification*; D051379:Mice; D008810:Mice, Inbred C57BL; D009132:Muscles / Q000201:enzymology*; D009137:Muscular Dystrophy, Animal / Q000201:enzymology* / Q000235:genetics
chemical_list: D007527:Isoenzymes; D000110:Acetylcholinesterase