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  • Title: Effects of Ginkgo biloba extract on the embryo-fetal development in Wistar rats.
    Author: Fernandes ES, Pinto RM, de Paula Reis JE, de Oliveira Guerra M, Peters VM.
    Journal: Birth Defects Res B Dev Reprod Toxicol; 2010 Apr; 89(2):133-8. PubMed ID: 20437472.
    Abstract:
    BACKGROUND: Ginkgo biloba extract (GBE) is an herbal medicine used for treating neurodegenerative diseases, cerebrovascular insufficiency, peripheral arterial occlusive disease, and also vestibular disturbance. Some components of GBE have presented estrogenic effects and, in a previous study, high dosages of GBE caused intra-uterine growth retardation in fetuses of Wistar rats treated during the fetogenesis period. METHODS: Pregnant Wistar rats were treated, through gavage, with different dosages of aqueous GBE (3.5, 7.0, and 14.0 mg/Kg/day), during the tubal transit and implantation period. Rats were killed on the 15th day of pregnancy and the following parameters were evaluated: clinical symptoms of maternal toxicity; maternal body weight; feed and water intake; maternal liver, kidney, and ovary weights; number of corpora lutea; implants per group ratio; pre- and post-implantation loss per group ratio; live fetuses mean; dead fetuses percentage; fetus and placenta weight per offspring ratio; and fetal external malformation. RESULTS: No significant alteration was found for both the maternal and embryonic parameters evaluated. CONCLUSIONS: The GBE treatment in pregnant Wistar rats, during the tubal transit and implantation period, caused no toxic effect on the maternal organism and did not induce embryonic death, growth retardation, and/or fetal malformations.
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