Beneficial effects of Hibiscus rosa-sinensis L. flower aqueous extract in pregnant rats with diabetes

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2017-06-01

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Afiune, Luana Alves Freitas
Leal-Silva, Thaís
Sinzato, Yuri Karen [UNESP]
Moraes-Souza, Rafaianne Queiroz [UNESP]
Soares, Thaigra Sousa [UNESP]
Campos, Kleber Eduardo
Fujiwara, Ricardo Toshio
Herrera, Emilio
Damasceno, Débora Cristina [UNESP]
Volpato, Gustavo Tadeu [UNESP]

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Purpose: The Hibiscus rosa-sinensis flower is widely used in Brazilian traditional medicine for the treatment of diabetes and has shown antifertility activity in female Wistar rats. However, there is no scientific confirmation of its effect on diabetes and pregnancy. The aim of this study was evaluate the effect of aqueous extract of H. rosa-sinensis flowers on maternalfetal outcome in pregnant rats with diabetes. Methods: Diabetes was induced by streptozotocin (STZ, 40 mg/kg) in virgin, adult, female Wistar rats. After diabetes induction, the rats were mated. The pregnant rats were distributed into four groups (n minimum = 11 animals/group): non-diabetic, non-diabetic treated, diabetic, and diabetic treated. Oral aqueous extract of Hibiscus rosa-sinensis was administered to rats in the treatment groups during pregnancy. At term pregnancy, maternal reproductive outcomes, fetal parameters, and biochemical parameters were analyzed. Results: The non-diabetic treated group showed decreased high density lipoprotein cholesterol, increased atherogenic index (AI) and coronary artery risk index (CRI), and increased preimplantation loss rate compared to the non-diabetic group. Although treatment with H. rosasinensis led to no toxicity, it showed deleterious effects on cardiac and reproductive functions. However, the diabetic treated group showed increased maternal and fetal weights, reduced AI and CRI, and reduced preimplantation loss rate compared to the untreated diabetic group. Conclusion: Our results demonstrate beneficial effects of this flower only in pregnant rats with diabetes and their offspring. Although these findings cannot be extrapolated to human clinical use, they show that the indiscriminate intake of H. rosa-sinensis may be harmful to healthy individuals and its use should be completely avoided in pregnancy.

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PLoS ONE, v. 12, n. 6, 2017.