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Effects of Multiple Somatostatin Treatment on rat Gonadotrophic Cells and Ovaries

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Abstract

The effect of multiple somatostatin (SRIH-14) treatment on the pituitary gonadotrophs, follicle stimulating harmone (FSH) and luteinizing harmone (LH), and ovaries of adult female Wistar rats was examined. Females received two 20 μg/100 g body wt. doses daily subcutaneously, for five consecutive days. FSH and LH cells were studied using a peroxidase–antiperoxidase immunocytochemical procedure. Morphometry and stereology were used to evaluate changes in the number per unit area (mm2), cell volume and volume densities of LH- and FSH-immunoreactive cells. Ovaries were analysed by simple point counting of follicles and corpora lutea. Follicles were divided by size according to the classification of Gaytán and Osman. Morphometric and stereological analysis of the pituitary showed that the number, volume and the volume density of FSH- and LH-immunoreactive cells were decreased after multiple SRIH-14 treatment, particularly in the latter. In the ovary, SRIH-14 induced decreases in the number of healthy follicles in all phases of folliculogenesis and corpora lutea, but the large antral follicle stage was most affected. The number of atretic follicles was increased. It can be concluded that multiple SRIH-14 treatment markedly inhibited LH cells, but affected FSH cells as well. In the ovary, SRIH-14 acted by inhibiting folliculogenesis and enhancing atretic processes.

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Authors and Affiliations

  1. Institute for Biological Research 'Siniša Stanković', Belgrade, Yugoslavia

    N. Nestorovi'c, M. Lovren, M. Sekuli'c, B. Filipovi'c & V. Milošević

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  1. N. Nestorovi'c
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  2. M. Lovren
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  3. M. Sekuli'c
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  4. B. Filipovi'c
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  5. V. Milošević
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Nestorovi'c, N., Lovren, M., Sekuli'c, M. et al. Effects of Multiple Somatostatin Treatment on rat Gonadotrophic Cells and Ovaries. Histochem J 33, 695–702 (2001). https://doi.org/10.1023/A:1016366704630

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