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Genes, Vol. 12, Pages 297: Functions of Forkhead Box O on Glucose Metabolism in Abalone Haliotis discus hannai and Its Responses to High Levels of Dietary Lipid
In conclusion, abalone foxo can be regulated by dietary lipid and can regulate gluconeogenesis or glycolysis in response to changes of dietary lipid levels, in which glycogen metabolism plays an important role.
Source: Genes - February 20, 2021 Category: Genetics & Stem Cells Authors: Liu Wang Yanlin Guo Mingzhu Pan Xinxin Li Dong Huang Yue Liu Chenglong Wu Wenbing Zhang Kangsen Mai Tags: Article Source Type: research

Mesenchymal stromal cells protect hepatocytes from lipotoxicity through alleviation of endoplasmic reticulum stress by restoring SERCA activity.
Abstract The aim of this study was to investigate how mesenchymal stromal cells (MSCs) modulate metabolic balance and attenuate hepatic lipotoxicity in the context of non-alcoholic fatty liver disease (NAFLD). In vivo, male SD rats were fed with high-fat diet (HFD) to develop NAFLD; then, they were treated twice by intravenous injections of rat bone marrow MSCs. In vitro, HepG2 cells were cocultured with MSCs by transwell and exposed to palmitic acid (PA) for 24 hours. The endoplasmic reticulum (ER) stressor thapsigargin and sarco/ER Ca2+ -ATPase (SERCA2)-specific siRNA were used to explore the regulation of ER s...
Source: J Cell Mol Med - February 16, 2021 Category: Molecular Biology Authors: Li L, Zeng X, Liu Z, Chen X, Li L, Luo R, Liu X, Zhang J, Liu J, Lu Y, Cheng J, Chen Y Tags: J Cell Mol Med Source Type: research

Berberine improves dietary-induced cardiac remodeling by upregulating Kruppel-like factor 4-dependent mitochondrial function.
Authors: Ding L, Li S, Wang F, Xu J, Li S, Wang B, Kou J, Wang Y, Cao W Abstract Multiple studies have showed that berberine protects against heart diseases, including obesityassociated cardiomyopathy. However, it is not fully disclosed the potential molecular mechanisms of berberine on controlling cardiac remodelling. Kruppel-like factor (KLF) 4, identified as a critical transcriptional factor, participates in multiple cardiac injuries. The present study was to explore whether KLF4 determined the cardioprotective benefits of berberine in dietary-induced obese mice. High fat diet-induced obese mice were treated wit...
Source: Biological Chemistry - February 7, 2021 Category: Chemistry Tags: Biol Chem Source Type: research

Coordinated regulation of miR-27 by insulin/CREB/Hippo contributes to insulin resistance.
In this study, we attempted to identify the mechanism by which miR-27 was regulated in the context of insulin resistance, a predisposed metabolic disorder in NAFLD. With cell culture experiments and animal studies, our results showed that miR-27 was coordinately regulated by insulin, CREB, and Hippo signalings. First, miR-27 was upregulated in palmitate-treated cells and high fat diet-fed mouse livers, both of which exhibited insulin resistance and increased CREB expression. Second, miR-27 was peaked in mouse liver at post-absorptive phase when CREB activity was increased. Also, miR-27 was increased rapidly in insulin-trea...
Source: Cellular Signalling - January 27, 2021 Category: Cytology Authors: Chen YJ, Chueh LY, Lee SY, Ma PF, Chen PC, Hsu SH Tags: Cell Signal Source Type: research

A GLP-1 analog lowers ER stress and enhances protein folding to ameliorate homocysteine-induced endothelial dysfunction.
Abstract Hyperhomocysteinemia (HHcy) is an independent risk factor for cardiovascular diseases and increases mortality in type 2 diabetic patients. HHcy induces endoplasmic reticulum (ER) stress and oxidative stress to impair endothelial function. The glucagon-like peptide 1 (GLP-1) analog exendin-4 attenuates endothelial ER stress, but the detailed vasoprotective mechanism remains elusive. The present study investigated the beneficial effects of exendin-4 against HHcy-induced endothelial dysfunction. Exendin-4 pretreatment reversed homocysteine-induced impairment of endothelium-dependent relaxations in C57BL/6 mo...
Source: Acta Pharmacologica Sinica - January 25, 2021 Category: Drugs & Pharmacology Authors: Cheng CK, Luo JY, Lau CW, Cho WC, Ng CF, Ma RCW, Tian XY, Huang Y Tags: Acta Pharmacol Sin Source Type: research

ERK1/2 inhibition reduces vascular calcification by activating miR-126-3p-DKK1/LRP6 pathway
Conclusions: Our study demonstrates that activation of miR-126-3p production in ECs/SMCs and interactions between ECs and SMCs play an important role in reduction of vascular calcification by ERK1/2 inhibition.
Source: Theranostics - January 15, 2021 Category: Molecular Biology Authors: Peng Zeng, Jie Yang, Lipei Liu, Xiaoxiao Yang, Zhi Yao, Chuanrui Ma, Haibo Zhu, Jiamin Su, Qian Zhao, Ke Feng, Shu Yang, Yan Zhu, Xiaoju Li, Wenguang Wang, Yajun Duan, Jihong Han, Yuanli Chen Tags: Research Paper Source Type: research

The Long Noncoding RNA RP11-728F11.4 Promotes Atherosclerosis.
CONCLUSIONS: RP11-728F11.4 promotes atherosclerosis, with an influence on cholesterol homeostasis and proinflammatory molecule production, thus representing a potential therapeutic target. PMID: 33406853 [PubMed - as supplied by publisher]
Source: Arteriosclerosis, Thrombosis and Vascular Biology - January 6, 2021 Category: Cardiology Authors: Dong XH, Lu ZF, Kang CM, Li XH, Haworth KE, Ma X, Lu JB, Liu XH, Fang FC, Wang CS, Ye JH, Zheng L, Wang Q, Ye S, Hu YW Tags: Arterioscler Thromb Vasc Biol Source Type: research

Exercise Training Reverses Lipotoxicity-induced Cardiomyopathy by Inhibiting HMGCS2
Conclusion Our results suggest that exercise limits lipid metabolic disorder, cardiac hypertrophy, and fibrosis and aids in the prevention of lipotoxic cardiomyopathy. Exercise-mediated cardioprotection by upregulating miR-344g-5p, which targets Hmgcs2 mRNA, prohibits HMGCS2 upregulation and thus lipotoxicity.
Source: Medicine and Science in Sports and Exercise - December 19, 2020 Category: Sports Medicine Tags: BASIC SCIENCES Source Type: research

Activation of the AMPK-SIRT1 pathway contributes to protective effects of Salvianolic acid A against lipotoxicity in hepatocytes and NAFLD in mice
Conclusion: Our data uncover a novel mechanism for hepatoprotective effects of Sal A against lipotoxicity both in livers from HFCD-fed mice and palmitic acid-treated hepatocytes.
Source: Frontiers in Pharmacology - November 30, 2020 Category: Drugs & Pharmacology Source Type: research

lncRNA uc.48+ regulates immune and inflammatory reactions mediated by the P2X7 receptor in type 2 diabetic mice.
In conclusion, these data suggest that uc.48+ may play an important role in the pathological changes of blood pressure, neurology and abdominal cell function in T2DM via interaction with the P2X7 receptor. PMID: 33224283 [PubMed]
Source: Experimental and Therapeutic Medicine - November 25, 2020 Category: General Medicine Tags: Exp Ther Med Source Type: research

Alisol B 23-acetate activates ABCG5/G8 in the jejunum via the LXR α/ACAT2 pathway to relieve atherosclerosis in ovariectomized ApoE-/- mice.
In conclusion, we confirmed that AB23A can reduce the absorption of dietary lipids in the jejunum by affecting the LXRα-ACAT2-ABCG5/G8 pathway and ultimately exert an anti-atherosclerotic effect. PMID: 33234731 [PubMed - as supplied by publisher]
Source: Aging - November 25, 2020 Category: Biomedical Science Authors: Yu XC, Fu Y, Bi YH, Zhang WW, Li J, Ji T, Chao Y, Meng QH, Chen Q, Ma MH, Zhang YH, Shan J, Bian HM Tags: Aging (Albany NY) Source Type: research

TXNIP/VDUP1 attenuates steatohepatitis via autophagy and fatty acid oxidation.
Abstract Impaired macroautophagy/autophagy has been implicated in experimental and human nonalcoholic steatohepatitis (NASH). However, the mechanism underlying autophagy dysregulation in NASH is largely unknown. Here, we investigated the role and mechanism of TXNIP/VDUP1 (thioredoxin interacting protein), a key mediator of cellular stress responses, in the pathogenesis of NASH. Hepatic TXNIP expression was upregulated in nonalcoholic fatty liver disease (NAFLD) patients and in methionine choline-deficient (MCD) diet-fed mice, as well as in palmitic acid (PA)-treated hepatocytes. Upregulation of hepatic TXNIP was p...
Source: Autophagy - November 16, 2020 Category: Cytology Authors: Park HS, Song JW, Park JH, Lim BK, Moon OS, Son HY, Lee JH, Gao B, Won YS, Kwon HJ Tags: Autophagy Source Type: research

AMPK upregulates KCa2.3 channels and ameliorates endothelial dysfunction in diet-induced obese mice.
Abstract The opening of endothelial small-conductance calcium-activated potassium channels (KCa2.3) is essential for endothelium-dependent hyperpolarization (EDH), which predominantly occurs in small resistance arteries. Adenosine monophosphate-activated protein kinase (AMPK), an important metabolic regulator, has been implicated in regulating endothelial nitric oxide synthase activity. However, it was unclear whether AMPK regulated endothelial KCa2.3-mediated EDH-type vasodilation. Using bioinformatics analysis and myograph system, we investigated the regulation by AMPK of KCa2.3 in human umbilical vein endotheli...
Source: Biochemical Pharmacology - November 10, 2020 Category: Drugs & Pharmacology Authors: Pang ZD, Wang Y, Song Z, She G, Ma XZ, Sun X, Wu W, Lai BC, Zhang J, Zhang Y, Du XJ, Shyy JYJ, Deng XL Tags: Biochem Pharmacol Source Type: research

Mangiferin protect oxidative stress against deoxynivalenol induced damages through Nrf2 signaling pathways in endothelial cells.
Abstract Several cereal grains contain a mycotoxin food contaminant called Deoxynivalenol (DON), which presents a significant health risk as it is one of the most commonly found mycotoxins. The current paper examines the ameliorative effect of mangiferin (MAN) in vascular endothelial cells induced through activating the Nrf2 signaling pathway on dietary DON-induced oxidative changes. The study infers that the intercellular reactive oxygen species (ROS) levels and malondialdehyde decrease due to MAN. Other effects include: In human umbilical vein endothelial cells (HUVECs), the oxidative stress-induced cell damage ...
Source: Clinical and Experimental Pharmacology and Physiology - October 30, 2020 Category: Drugs & Pharmacology Authors: Al-Saeedi FJ Tags: Clin Exp Pharmacol Physiol Source Type: research

GPR40-Deficiency Is Associated with Hepatic FAT/CD36 Upregulation, Steatosis, Inflammation and Cell Injury in C57BL/6 Mice.
In this study, we fed wild-type or GPR40 knockout C57BL/6 mice high-fat diet (HFD) for 20 weeks and then assessed the effect of GPR40-deficiency on HFD-induced NAFLD. Assays on metabolic parameters showed that HFD increased bodyweight, glucose, insulin, insulin resistance, cholesterol and alanine aminotransferase (ALT), and GPR40-deficiency did not mitigate the HFD-induced metabolic abnormalities. In contrast, we found that GPR40-deficiency was associated with increased bodyweight, insulin, insulin resistance, cholesterol and ALT in control mice fed low fat diet (LFD). Surprisingly, histology and Oil Red O staining showed ...
Source: American Journal of Physiology. Endocrinology and Metabolism - October 26, 2020 Category: Physiology Authors: Lu Z, Li Y, Syn WK, Li AJ, Ritter S, Wank SA, Lopes-Virella MF, Huang Y Tags: Am J Physiol Endocrinol Metab Source Type: research