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Prenatal Hypoxia Predisposes to Impaired Expression of the and Genes in Adult Rats without Affecting Acetylcholine Metabolism during Embryonic Development. | LitMetric

Prenatal Hypoxia Predisposes to Impaired Expression of the and Genes in Adult Rats without Affecting Acetylcholine Metabolism during Embryonic Development.

Biochemistry (Mosc)

Laboratory of Regulation of Brain Neuronal Functions, Pavlov Institute of Physiology, Russian Academy of Sciences, Saint Petersburg, 199034, Russia.

Published: November 2024

AI Article Synopsis

Article Abstract

Previous studies have shown that the combined effect of fetal hypoxia and maternal stress hormones predetermines tendency to nicotine addiction in adulthood. This study in rats aimed to investigate the effect of prenatal severe hypoxia (PSH) on acetylcholine metabolism in the developing brain, as well as on expression of acetylcholine receptors and in both the developing brain and adult brain structures following nicotine consumption. In the developing brain of PSH rats, no changes were found in the activity of choline acetyltransferase (ChAT) and acetylcholinesterase (AChE) or disturbances in the acetylcholine levels. However, decreased expression was detected on the day 15 of pregnancy, while elevation in the expression was observed on the days 15 and 16 of embryogenesis. In adulthood, the consequences of PSH were manifested as decreased expression of in the medial prefrontal cortex (PFC), nucleus accumbens (NAacc), and hypothalamus (HT), decreased expression of in the PFC and hippocampus (HPC). Whereas, nicotine consumption did not decrease the expression levels of and compared to the control group in the adult PSH rats. Thus, prenatal hypoxia predisposes to impaired expression of the and genes in adult rats without affecting acetylcholine metabolism during embryonic development.

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http://dx.doi.org/10.1134/S0006297924110099DOI Listing

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