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Diurnal changes in mitotic activity and distribution of mitoses in the gastric mucosa of albino rats

  • Experimental Biology
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Summary

A study was made of the daily changes of mitotic activity and of mitosis distribution in the mucosa of the pylorus and the fundus of the stomach of albino rats. In the pylorus 99.1% of mitoses occurred in the lower portion of the gland. The average daily mitotic coefficient in the glands of the pyloric portion was 7.8%. The curve of the daily rhythm is double-peaked in shape with maximal levels at 10 A.M. and 7 P.M. In the glands of the gastric fundus 88.5% of all the mitoses occurred in the surface-epithelial and mucous cells of the cervix, 7.4% in the peptic cells, 4.1% in the parietal cells. The average daily mitotic coefficient in the glands of the fundus is 2.04%..

In the mucous membrane of the fundus the curve of the daily periodic mitotic acitivity is similar to that of the pyloric portion, but it is less pronounced.

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Authors and Affiliations

  1. Laboratory of Histophysiology, Institute of Experimental Biology of the AMN SSSR, Moscow

    T. B. Timashkevich

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  1. T. B. Timashkevich
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Timashkevich, T.B. Diurnal changes in mitotic activity and distribution of mitoses in the gastric mucosa of albino rats. Bull Exp Biol Med 55, 92–95 (1964). https://doi.org/10.1007/BF00800211

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  • DOI: https://doi.org/10.1007/BF00800211

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