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Article Publish Status: FREE
Abstract Title:

Strains Alleviated Hyperlipidemia and Liver Steatosis in Aging Rats via Activation of AMPK.

Abstract Source:

Int J Mol Sci. 2020 Aug 16 ;21(16). Epub 2020 Aug 16. PMID: 32824277

Abstract Author(s):

Lee-Ching Lew, Yan-Yan Hor, Mohamad-Hafis Jaafar, Amy-Sie-Yik Lau, Boon-Kiat Lee, Li-Oon Chuah, Kien-Pong Yap, Azali Azlan, Ghows Azzam, Sy-Bing Choi, Min-Tze Liong

Article Affiliation:

Lee-Ching Lew

Abstract:

In this study, we hypothesized that different strains ofcan alleviate hyperlipidemia and liver steatosis via activation of 5' adenosine monophosphate-activated protein kinase (), an enzyme that is involved in cellular energy homeostasis, in aged rats. Male rats were fed with a high-fat diet (HFD) and injected with D-galactose daily over 12 weeks to induce aging. Treatments included (= 6) (i) normal diet (ND), (ii) HFD, (iii) HFD-statin (lovastatin 2 mg/kg/day), (iv) HFD-DR9 (10 log CFU/day), (v) HFD-DR7 (10 log CFU/day), and (vi) HFD-8513d (10 log CFU/day). Rats administered with statin, DR9, and 8513d reduced serum total cholesterol levels after eight weeks (<0.05), while the administration of DR7 reduced serum triglycerides level after 12 weeks (<0.05) as compared to the HFD control. A more prominent effect was observed from the administration of DR7, where positive effects were observed, ranging from hepatic gene expressions to liver histology as compared to the control (<0.05); downregulation of hepatic lipid synthesis andβ-oxidation gene stearoyl-CoA desaturase 1 (), upregulation of hepatic sterol excretion genes of ATP-binding cassette subfamily G member 5 and 8 (and), lesser degree of liver steatosis, and upregulation of hepatic energy metabolisms genesand. Taken altogether, this study illustrated that the administration of selectedstrains led to improved lipid profiles via activation of energy and lipid metabolisms, suggesting the potentials ofas a promising natural intervention for alleviation of cardiovascular and liver diseases.

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