Millettia macrophylla (Fabaceae) phenolic fraction prevents differentiation of 3T3-L1 adipocytes and the increased risks of cardiovascular diseases in ovariectomized rats

Publication date: 10 August 2018
Source:Journal of Ethnopharmacology, Volume 222
Author(s): Stéphane Zingue, Ícaro Andrade Rodrigues do Carmo, Job Tchoumtchoua, Edwige Nana Tchoupang, Letícia de Oliveira Souza Bratti, Tamara Dal Mora, Maria Halabalaki, Dieudonné Njamen, Tânia Beatriz Creczynski-Pasa, Fabíola Branco Filippin-Monteiro
Ethnopharmacological relevanceA prolonged estrogen deficiency alters lipid metabolism and increases risks of cardiovascular diseases. Phytoestrogens, naturally occurring compounds with estrogenic properties are reported to have cardiovascular protective effects. Millettia macrophylla used in the Cameroonian traditional system to treat physiological disorders related to menopause, was previously reported to have estrogenic effects.AimWe, therefore, proposed evaluating the in vitro and in vivo effects of M. macrophylla phenolic fraction on some risk factors for cardiovascular diseases.Material and methodsIn vitro, the ability of the M. macrophylla phenolic fraction (PF) as well as the 9 isolates to prevent the 3T3-L1 preadipocytes differentiation was assessed. Further, the preventive effects of PF on abdominal fat accumulation, body weight gain, lipid profile, nitric oxide level, superoxide dismutase (SOD) and catalase activities, reduced glutathione (GSH) and malondialdehyde (MDA) levels were assessed in a postmenopausal rat model.ResultsIn vitro, PF and its isolate secundiferol I inhibited lipid accumulation in 3T3-L1 cells. Moreover, all the isolates except daidzein dimethylether prevented the interleukin IL-6 production in 3T3-L1 cells. In vivo, PF prevented ovariectomy-induced abdominal fat accumulation, body weight gain, dyslipidemia, glucose intolerance and decreased atherogenic index. In addition, it induced a vasorelaxant effect by preventing the low level of nitric oxide in the aorta. PF also exhibited antioxidant effects as it increased aorta GSH level, SOD, and catalase activities and decreased MDA level.ConclusionsTaken together, our data suggest that PF prevents the increased risks of cardiovascular diseases in ovariectomized rats.

Graphical abstract

https://ift.tt/2wsoETy