ISSN:
1432-119X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary An investigation has been carried out on the stability of several enzymes in portions of rabbit brain and spinal cord kept at controlled temperatures between 22 and 37° C for periods up to 24 hours before processing for enzyme activity. The enzymes studied were NAD diaphorase, succinate, lactate, glutamate and glucose-6-phosphate dehydrogenases, and monoamine oxidase. One-wavelength “plug” cytophotometric measurements of enzyme activity were carried out on Purkinje cells, neuropil of the granular layer of the cerebellar cortex and on anterior horn cells. Succinate dehydrogenase activity proved to be stable after 24 hours post-mortem exposure at 37°C. Lactate dehydrogenase, NAD diaphorase and monoamine oxidase activities were less stable at the higher temperatures but were stable at 22°C. Glutamate and glucose-6-phosphate dehydrogenase activities fell significantly with exposure at 22°C. It thus appears possible to make valid histochemical measurements of the activities of certain oxidative enzymes in selected post-mortem brain material.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00263364
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