Growth‐related changes in cell body size and succinate dehydrogenase activity of spinal motoneurons innervating the rat soleus muscle

2003 ◽  
Vol 21 (8) ◽  
pp. 461-469 ◽  
Author(s):  
Akihiko Ishihara ◽  
Fuminori Kawano ◽  
Noriaki Ishioka ◽  
Hirotaka Oishi ◽  
Akira Higashibata ◽  
...  
Keyword(s):  
Body Size ◽  
Succinate Dehydrogenase ◽  
Dehydrogenase Activity ◽  
Cell Body ◽  
Soleus Muscle ◽  
Spinal Motoneurons ◽  
Succinate Dehydrogenase Activity ◽  
Rat Soleus Muscle ◽  
Cell Body Size

scholarly journals MICROPHOTOMETRIC DETERMINATION OF ENZYME ACTIVITY IN SINGLE CELLS IN CRYOSTAT SECTIONS II. SUCCINATE DEHYDROGENASE, LACTATE DEHYDROGENASE AND TRIOSEPHOSPHATE DEHYDROGENASE ACTIVITIES IN RED, INTERMEDIATE AND WHITE FIBERS OF SOLEUS AND RECTUS FEMORIS MUSCLES OF RAT

1972 ◽  
Vol 20 (8) ◽  
pp. 577-582 ◽  
Author(s):  
J. NOLTE ◽  
D. PETTE
Keyword(s):  
Lactate Dehydrogenase ◽  
Succinate Dehydrogenase ◽  
Dehydrogenase Activity ◽  
Soleus Muscle ◽  
Cross Sections ◽  
Single Cells ◽  
Rectus Femoris ◽  
Succinate Dehydrogenase Activity ◽  
Parallel Increase ◽  
Musculus Soleus

Comparative microphotometric determinations of succinate dehydrogenase, triosephosphate dehydrogenase and lactate dehydrogenase activities in single white, red and intermediate fibers in cross-sections of rat rectus femoris muscle and soleus muscle were performed. White fibers have the highest triosephosphate and lactate dehydrogenase activities and the lowest succinate dehydrogenase activity. Red fibers are highest in succinate dehydrogenase activity and relatively low in triosephosphate and lactate dehydrogenase activities. The intermediate fibers have medium succinate dehydrogenase activity and relatively low triosephosphate dehydrogenase activity. In the soleus muscle, the triosephosphate dehydrogenase activity of the red fibers exceeds that of the intermediate fibers. A parallel increase in succinate dehydrogenase is observed in the red fibers of musculus soleus and musculus rectus femoris after thyroid hormone administration. There is some evidence, however, that the red fibers of the two muscles investigated vary with regard to their absolute succinate dehydrogenase activities and also the triosephosphate dehydrogenase to succinate dehydrogenase activity ratio.

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