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Genistein Precipitated Hypothyroidism, Altered Leptin and C-Reactive Protein Synthesis in Pregnant Rats
F O Awobajo1, B O Onokpite, Y M Ali
1Department of Physiology, College of Medicine, University of Lagos. funmi_bajo@yahoo.com.
Summary
Genistein exposure in pregnant rats caused hypothyroidism and altered metabolic hormones, leading to reduced fetal growth and increased embryonic resorption. This highlights potential risks of genistein during pregnancy.
Area of Science:
- Reproductive toxicology
- Endocrinology
- Developmental biology
Background:
- Genistein, a soy isoflavone, is widely consumed.
- Its effects on pregnancy outcomes require thorough investigation.
- Understanding genistein's impact on maternal and fetal health is crucial.
Purpose of the Study:
- To investigate the adverse effects of genistein on pregnant rats.
- To elucidate the underlying mechanisms of genistein-induced toxicity.
- To assess genistein's impact on maternal hormones and fetal development.
Main Methods:
- Pregnant rats were divided into control and genistein-exposed groups (2 mg/kg).
- Maternal blood, amniotic fluid, and placenta were collected at various gestation days.
- Assays were performed for thyroid hormones (T3, T4), leptin, and C-reactive protein (CRP).
Main Results:
- Genistein exposure significantly altered maternal T3 and T4 levels, indicating hypothyroidism.
- Maternal and placental leptin levels were significantly increased in the genistein group.
- Genistein caused a decrease in fetal and placental weights and increased embryonic resorption.
Conclusions:
- Oral genistein exposure during pregnancy precipitates hypothyroidism in rats.
- Genistein alters key metabolic hormones, impacting fetal and placental growth.
- These findings suggest potential risks associated with genistein consumption during pregnancy.
