Doxycycline hyclate may damage testicular germinal epithelium in Wistar rats
DOI:
https://doi.org/10.14393/BJ-v39n0a2023-64399Keywords:
Antibiotics, Histology, Male Infertility, Morphometry, Reproduction.Abstract
Broad-spectrum antimicrobial doxycycline acts as an inhibitor of protein synthesis and it is widely used in the clinical treatment of various infections by microorganisms that are sensitive to the drug, as well as in animal feed. Its liposolubility guarantees its high tissue bioavailability, being associated with several biochemical changes in the organism and potentially adverse effects on reproduction. This study aims to evaluate the effects of the action of doxycycline on spermatogenesis to provide a complete analysis of the tubular and interstitial compartments and to identify possible changes in the testicular parenchyma. Adult male Wistar rats were divided into three groups: one control (water), and two treated with doxycycline at the doses of 10mg/kg and 30mg/kg, for 30 days. After euthanasia and sample processing, the following parameters were evaluated: a) tubular diameter and height of the seminiferous epithelium; b) volumetric proportions (%) and volumes (mL) of the components of the testicular parenchyma; c) counting testicular germ cell populations; d) evaluation of cell viability. The results of the comparative evaluation between the experimental groups demonstrated a significant increase in the diameter and area of the tubular lumen and a reduction in the count of spermatogonia in the experimental group that received doxycycline hyclate at a dose of 30mg/kg. In the same experimental group, an increase in the overall yield of spermatogenesis was found as a consequence of the increase in the mitotic index.
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Copyright (c) 2023 João Vitor Lopes-Ferreira, Jullyana Costa Machado, Fernanda Carolina Riberio Dias, Luciana Schulthais Altoé, Reggiani Gonçalves Vilela, Sérgio Luis Pinto da Matta, Angelica de Oliveira Gomes, Marcos de Lucca Moreira Gomes
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