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KMID : 0378019740170101333
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New Medical Journal
1974 Volume.17 No. 10 p.1333 ~ p.1338
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Morphological Observation on Paneth cells of Hibernating Bats, Pipistrellus abramus abramus Temminck
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Abstract
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The morphological changes of Paneth cells of bats were observed in the active, prehibernating, hibernating and posthibernating phases. Bats of each phase were collected at Mt. Dobong and
Uijongbu near Seoul: active (the end of July), prehibernating (the middle of September), hiberna￢ting (the beginning of December) and posthibernating (the end of April).
Mucosal specimens from the jejunum of bats in each phase were fixed in 10% neutral formalin
solution, embedded in paraffin wax, sectioned at a thickness of 4p, and stained with Best´s carmine. Morphological changes of Paneth cells such as numbers and shapes of the cells and distribution and staining reactions of their specific granules were observed, and the average numbers of the cells (Paneth cell index, PCI) were counted in the longitudinally well sectioned twenty intestinal glands and semiquantitative granulation indices (Paneth cell granulation index, PGI)
were obtained arithmatically weighted method to 3 cell types classified according to the degree of
granularity of the cells.
The results were as follows.
1. In the active phase, PCI and PGI in the jejunal mucosa of bats were 104.4±9.51 and 231.7±10.45 respectively.
2. In the hibernating bats, PCI and PGI showed significant decrease and Paneth cells revealed
irregularities in shape and dispersed distribution and weakness of stain reaction of their specific granules compared with those of the active phase.
3. PCI and PGI in the posthibernating phase exhibited slight increase compared with those in the hibernating phase but paneth cells still remained depressed state in the numbers and their granulari￢ties comparing with those in the active phase.
4. The above findings infer that biosynthesis of paneth cells is remarkably suppressed ring the hibernating phase, continuing the secretion of the cells in a little amount, and recovery cif secretory activity of the cells after hibernation is considerably retarded.
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