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Modified Estrogen-Progesterone Induction Method of Mammary Gland Hyperplasia in Rats

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In female Wistar rats, mammary gland hyperplasia (MGH) was modeled according to a modified protocol involving estrogen-progesterone induction and taking into account the duration of the estrous cycle of this animal species. MGH was induced over four 7-day cycles; each cycle included subcutaneous administration of 17β-estradiol (0.5 mg/kg) for 4 days, injection of progesterone (5 mg/kg) on day 5, then 2 days without injections. In females with MGH, a significant increase in the height and diameter of the nipples of the mammary glands was recorded, two types of changes were observed in the gland tissue: tubuloalveolar and lobuloalveolar hyperplasia. The study confirmed the development of MGH in rats by a modified method.

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Correspondence to A. L. Semenov.

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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 175, No. 1, pp. 128-132, January, 2023

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Semenov, A.L., Tyndyk, M.L., Von, Y. et al. Modified Estrogen-Progesterone Induction Method of Mammary Gland Hyperplasia in Rats. Bull Exp Biol Med 175, 112–115 (2023). https://doi.org/10.1007/s10517-023-05821-2

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  • DOI: https://doi.org/10.1007/s10517-023-05821-2

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