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KMID : 0378019790220020055
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New Medical Journal
1979 Volume.22 No. 2 p.55 ~ p.61
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Influence of Temperature on the Granular Convoluted Tubules of Submandibular Gland in Relation to the Testicular Function
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Abstract
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The influence of the living temperature on the granular convoluted tubules (GCT) of the mouse submandibular gland were studied in relation to the testicular alterations.
Whereas this GCT displays the obvious sexual dimorphism, its functions and relations to the other endocrine glands have not been proved conspicuously but some investigators insisted that the testis is the organ which shows strong evidence.
In this experiment adult albino mice were bred under four different temperatures; 33´C (high), 20°C (normal), 5°C and 0°C (low) for 10 day. The submandibular gland and testis of each animal were observed by histological and histometrical-methods.
Following results were obtained.
1. The submandibular glands were rapidly hypertrophied in high temperature and less atrophied in the low temperature, but the testis were atrophied slightly in the high and severe in the low temperature.
2. The GCT sizes were almost not affected by the temperature, whereas the GCT occupied areas on the sections were much different, those are, 39% in high, 51% in normal, 56% in 5°C and 61% in 00 C, respectively. These findings are considered to be the result of the acinar alterations by changes of temperature.
3. The testicular findings were nearly normal in the high temperature, but in the low temperature, diffuse and severe atrophy and degeneration of the seminiferous tubules and Leydig cells were revealed.
4. Therefore, it is considered that the sexual dimorphism of GCT is not directly related to the testicular function in this experiment.
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KEYWORD
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