METHODS: Eighteen post-weaning female Sprague Dawley rats were divided into the following groups: (i) a control group that received vehicle (distilled water and Tween 80); (ii) a group treated with 10 mg/kg body weight (BW) of Genistein (Gen 10); and (iii) a group treated with a higher dose of Genistein (Gen 100). The rats were treated daily for three weeks from postnatal day 22 (P22) to P42. After the animals were sacrificed, blood samples were collected, and the uteri and ovaries were harvested and subjected to light microscopy and immunohistochemical study.
RESULTS: A reduction of the mean weekly BW gain and organ weights (uteri and ovaries) were observed in the Gen 10 group compared to the control group; these findings were reversed in the Gen 100 group. Follicle stimulating hormone and estrogen levels were increased in the Gen 10 group and reduced in the Gen 100 group. Luteinizing hormone was reduced in both groups of Genistein-treated animals, and there was a significant difference between the Gen 10 and control groups (p<0.05). These findings were consistent with increased atretic follicular count, a decreased number of corpus luteum and down-regulation of estrogen receptors-a in the uterine tissues of the Genistein-treated animals compared to the control animals.
CONCLUSION: Post-weaning exposure to Genistein could affect the development of the reproductive system of ovarian-intact experimental rats because of its action on the hypothalamic-pituitary-gonadal axis by regulating hormones and estrogen receptors.
METHODS AND STUDY DESIGN: The scoping review was performed using Arksey and O'Malley's methodological framework. The systematic search was conducted using Scopus, Pubmed, EBSCOHost and Google Scholar in April 2020, updated in March 2021. Only literature published between January 2010 until February 2021 was searched.
RESULTS: A total of 25 articles were included, of which 23 were randomised controlled trials , and 2 were quasi-experimental studies. Some of studies found improvements in depression (76% out of all studies). On this basis, nutrition or physical activity intervention probably improves postpartum depression. Moreover, the integration of nutrition and physical activity appears to improve depression in the more thorough follow-up of participants . Active involvement of the participant in the interventions was contributory to effectiveness.
CONCLUSIONS: Nutrition and physical activity interventions with appropriate strategy and delivery are promising options for the management of postpartum maternal mental health. More definitive investigation of non-pharmacological interventions to ameliorate depression among postpartum women is warranted.