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Effects of omega-3 fatty acid supplementation during chronic maternal hypoxia on behavioral disorders in male rat offspring: the role of Trk family and oxidative stress.
Metabolic Brain Disease 2022 May 28
Maternal hypoxia due to a lack of blood flow and insufficient oxygen supply in the brain leads to behavioral disorders in adult offspring. Fish oil includes docosahexaenoic acid (DHA), a significant component of membrane phospholipids of nerve cells, which improved cognition, and memory. Trk family receptors are activated by hypoxic induction factor (HIF), and are involved in the neurotrophin's protective effects at the cellular level. Here we studied the biochemical, and molecular mechanisms of the protective effect of fish oil during the chronic maternal hypoxia model on behavioral responses in male rat offspring. Pregnant female rats were randomly divided into 4 experimental groups: 1) ctr; Control rats were pregnant 2) Hyp; Pregnant female rats received hypoxia from 6 to 15th day of pregnancy, with 10% oxygen intensity, and 90% nitrogen; 3) FO; Pregnant female rats received fish oil (F8020 1 ml / day, for ten consecutive days Orally), and 4) FO / Hyp; Pregnant female rats received hypoxia plus fish oil in the same manner. Behavioral parameters were evaluated in 28-day-old male offspring. HIF-1α, TrkB, and P75 gene expression were measured in the offspring's brain. Maternal hypoxia impaired memory performance, and locomotor activity in offspring. Besides, Trk family gene expression, and oxidative stress indicators showed a significant increase in the offspring's brain exposed to maternal hypoxia compared to the control group. Overall, fish oil improved behavioral parameters by inhibiting oxidative stress, and the expression of Trk family receptors.
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