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KMID : 0352819880040010045
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Kosin Medical Journal
1988 Volume.4 No. 1 p.45 ~ p.51
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A Histochemical Study of Acetylcholinesterase in the Hypophysis of Developing Rat
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Abstract
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Experiments were made to determine the presence of choiinergic biomaker, acetylcholinesterase (ACNE) in the rat hypophysis of development. A histochemical procedure for AChE was used to provide visualization of structure containg this enzyme.
ACNE activity of developing rat hypophysis first demonstrated in 16 days and then the more increased activity was found in 19 and 20 days. Cells staining for ACNE were found in the pars distalis and pars intermedia of the developing rat hypophysis. Nerve fibers staining for AChE activity were observed in the pars nervosa.
The presence of AChE and choline acetyltransferase (ChAT) (Sarah and Donald, 1983) in the pars intermedia and the pars nervosa is evidence for a chohnergic innervation to these regions. In the pars distalis, where other investigators have found muscarinic receptors, in-tense staining for AChE and absence of ChAT activity (Sarah and Donald, 1983) may indicate non-innervated, acetylcholine-sensitive sites.
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