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Gestational exposure to continuous light impairs the development of the female reproductive system in adult Wistar rat offspring
Introduction It has been suggested that maternal exposure to constant light during the gestational period could be considered as a chronic stressor, impairing offspring development by interfering in neuroendocrine and behavior responses. Objective This study aimed to evaluate whether maternal exposu...
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Published in: | Birth defects research 2023-04, Vol.115 (7), p.710-721 |
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Main Authors: | , , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Introduction
It has been suggested that maternal exposure to constant light during the gestational period could be considered as a chronic stressor, impairing offspring development by interfering in neuroendocrine and behavior responses.
Objective
This study aimed to evaluate whether maternal exposure to continuous light during pregnancy affects the adult reproductive system in the female offspring.
Materials and Methods
Pregnant Wistar rats were allocated into light–dark (LD) group, exposed to light and dark photoperiod during gestation, and the light–light (LL) group, exposed to a photoperiod of constant light during gestation. After birth, pups were maintained under normal light–dark photoperiod until adulthood. At postnatal day 90, blood was collected from the female offspring, to analyze plasma luteinizing hormone (LH) and progesterone levels, and the uterus and ovaries were harvested for morphometric, histological, and oxidative stress evaluations.
Results and Discussion
Female exposure to continuous light during the intrauterine period resulted in the adult reduction of LH and increased progesterone plasma levels, and uterine injuries a higher number of endometrial glands and reduced levels of antioxidant enzymes, such as glutathione reductase and glutathione S‐transferase. In these experimental conditions, gestational continuous light exposure disturbs sex hormone balance and reduces the antioxidant enzymatic activity in the uterus of female offspring in adult life. |
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ISSN: | 2472-1727 2472-1727 |
DOI: | 10.1002/bdr2.2161 |