scholarly journals l-Cysteine and Vitamin D Co-Supplementation Alleviates Markers of Musculoskeletal Disorders in Vitamin D-Deficient High-Fat Diet-Fed Mice

Nutrients ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3406
Author(s):  
Rajesh Parsanathan ◽  
Arunkumar E. Achari ◽  
Prasenjit Manna ◽  
Sushil K. Jain
Keyword(s):  
Gene Expression ◽  
Skeletal Muscle ◽  
Vitamin D ◽  
Musculoskeletal Disorders ◽  
High Fat Diet ◽  
Bone Modeling ◽  
Muscle Dystrophy ◽  
High Fat ◽  
Better Than

Vitamin D (VD) deficiency is associated with musculoskeletal disorders. This study examines whether co-supplementation of l-cysteine (LC) and VD is better than monotherapy with LC or VD at alleviating musculoskeletal dyshomeostasis in the skeletal muscle of VD-deficient high-fat diet (HFD-VD-) fed mice. Mice were fed a healthy diet or an HFD; for VD-deficient animals, the mice were maintained on a HFD-VD-diet (16 weeks); after the first 8 weeks, the HFD-VD-diet-fed mice were supplemented for another 8 weeks with LC, VD-alone, or the same doses of LC + VD by oral gavage. Saline and olive oil served as controls. Myotubes were exposed with high-glucose, palmitate, Monocyte Chemoattractant Protein 1 (MCP-1), and Tumor Necrosis Factor (TNF), to mimic the in vivo microenvironment. In vitro deficiencies of glutathione and hydrogen sulfide were induced by knockdown of GCLC and CSE genes. Relative gene expression of biomarkers (myogenic: MyoD, Mef2c, Csrp3; muscle dystrophy: Atrogin1, Murf1, and Myostatin; bone modeling and remodeling: RANK, RANKL, OPG) were analyzed using qRT-PCR. Co-supplementatoin with LC + VD showed beneficial effects on gene expression of myogenic markers and OPG but reduced markers of dystrophy, RANK/RANKL in comparison to LC or VD alone-supplementation. In vitro myotubes treated with glutathione (GSH) precursors also showed a positive effect on OPG and the myogenesis genes, and inhibited RANK/RANKL and muscle-dystrophy markers. This study reveals that the co-supplementation of LC with VD significantly alleviates the markers of musculoskeletal disorders in the skeletal muscle better than monotherapy with LC or VD in HFD-VD-fed mice.

scholarly journals Intramyocellular Lipid Accumulation After High-Fat Diet Is Associated with the Gene Expression Involved in Lipid Metabolism in Skeletal Muscle of Non-Obese Men

2016 ◽  
Vol 62 (Suppl.1) ◽  
pp. 144-145
Author(s):  
SAORI KAKEHI ◽  
YOSHIFUMI TAMURA ◽  
KAGEUMI TAKENO ◽  
YUKO SAKURAI ◽  
MINAKO KAWAGUCHI ◽  
...  
Keyword(s):  
Gene Expression ◽  
Skeletal Muscle ◽  
Lipid Metabolism ◽  
Lipid Accumulation ◽  
High Fat Diet ◽  
Intramyocellular Lipid ◽  
High Fat

scholarly journals Combined effect of canagliflozin and exercise training on high-fat diet-fed mice

2020 ◽  
Vol 318 (4) ◽  
pp. E492-E503
Author(s):  
Kenichi Tanaka ◽  
Hirokazu Takahashi ◽  
Sayaka Katagiri ◽  
Kazuyo Sasaki ◽  
Yujin Ohsugi ◽  
...  
Keyword(s):  
Gene Expression ◽  
Insulin Resistance ◽  
Skeletal Muscle ◽  
Exercise Training ◽  
Fatty Liver ◽  
High Fat Diet ◽  
Characteristic Change ◽  
High Fat ◽  
Nonalcoholic Fatty Liver ◽  
Sodium Glucose Cotransporter

Sodium-glucose cotransporter 2 inhibitors (SGLT2is) have been reported to improve obesity, diabetes, and nonalcoholic fatty liver disease (NAFLD) in addition to exercise training, whereas the combined effects remain to be elucidated fully. We investigated the effect of the combination of the SGLT2i canagliflozin (CAN) and exercise training in high-fat diet-induced obese mice. High-fat diet-fed mice were housed in normal cages (sedentary; Sed) or wheel cages (WCR) with or without CAN (0.03% of diet) for 4 wk. The effects on obesity, glucose metabolism, and hepatic steatosis were evaluated in four groups (Control/Sed, Control/WCR, CAN/Sed, and CAN/WCR). Numerically additive improvements were found in body weight, body fat mass, blood glucose, glucose intolerance, insulin resistance, and the fatty liver of the CAN/WCR group, whereas CAN increased food intake and reduced running distance. Exercise training alone, CAN alone, or both did not change the weight of skeletal muscle, but microarray analysis showed that each resulted in a characteristic change of gene expression in gastrocnemius muscle. In particular, in the CAN/WCR group, there was acceleration of the angiogenesis pathway and suppression of the adipogenesis pathway compared with the CAN/Sed group. In conclusion, the combination of an SGLT2i and exercise training improves obesity, insulin resistance, and NAFLD in an additive manner. Changes of gene expression in skeletal muscle may contribute, at least in part, to the improvement of obesity and insulin sensitivity.

scholarly journals Effect of Dietary Silk Peptide on Obesity, Hyperglycemia, and Skeletal Muscle Regeneration in High-Fat Diet-Fed Mice

Cells ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 377 ◽  
Author(s):  
Kippeum Lee ◽  
Heegu Jin ◽  
Sungwoo Chei ◽  
Hyun-Ji Oh ◽  
Jeong-Yong Lee ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
High Fat Diet ◽  
Glucose Transporter ◽  
Uncoupling Protein ◽  
Skeletal Muscle Regeneration ◽  
High Fat ◽  
Skeletal Muscle Function ◽  
Silk Peptide

Obesity is associated with excess body fat accumulation that can cause hyperglycemia and reduce skeletal muscle function and strength, which characterize the development of sarcopenic obesity. In this study, we aimed to determine the mechanism whereby acid-hydrolyzed silk peptide (SP) prevents high-fat diet (HFD)-induced obesity and whether it regulates glucose uptake and muscle differentiation using in vivo and in vitro approaches. Our findings demonstrate that SP inhibits body mass gain and the expression of adipogenic transcription factors in visceral adipose tissue (VAT). SP also had an anti-diabetic effect in VAT and skeletal muscle because it upregulated glucose transporter type 4 (GLUT4) and uncoupling protein 3 (UCP3) expression. Furthermore, SP reduced ubiquitin proteasome and promoted myoblast determination protein 1 (MyoD)/myogenic factor 4 (myogenin) expression, implying that it may have potential for the treatment of obesity-induced hyperglycemia and obesity-associated sarcopenia.

Effects of high-fat diet and regular aerobic exercise on global gene expression in skeletal muscle of C57BL/6 mice

Metabolism ◽  
2012 ◽  
Vol 61 (2) ◽  
pp. 146-152 ◽  
Author(s):  
Li Fu ◽  
Xiaolei Liu ◽  
Yanmei Niu ◽  
Hairui Yuan ◽  
Ning Zhang ◽  
...  
Keyword(s):  
Gene Expression ◽  
Skeletal Muscle ◽  
Aerobic Exercise ◽  
High Fat Diet ◽  
Global Gene Expression ◽  
High Fat

scholarly journals Jianpi Qinghua Formula Reduced Intramyocellular Lipids (IMCLs) by Inhibiting Excessive Activation of mTORC1

2021 ◽  
Author(s):  
Xv Han ◽  
Qingguang Chen ◽  
Yahua Liu ◽  
Junfei Xv ◽  
Hao Lu
Keyword(s):  
Skeletal Muscle ◽  
Insulin Sensitivity ◽  
Palmitic Acid ◽  
High Fat Diet ◽  
C2c12 Cells ◽  
Akt Pathway ◽  
High Fat ◽  
Akt Phosphorylation

Abstract Background:IMCLs are an important factor in skeletal muscle insulin resistance. This study aimed to explore the effect of Jianpi Qinghua formula (JPQHF) on IMCLs and its mechanism, as well as the relationship between IMCLs and other skeletal muscle insulin sensitivity factors, thereby elucidating the mechanism by which JPQHF improves insulin sensitivity.Methods: In an in vivo experiment, JPQHF and pioglitazone (PIO) were individually used to treat C57 mice with high-fat diet-induced obesity. In an in vitro experiment, JPQHF and rapamycin in serum were individually used to treat C2C12 cells induced with palmitic acid. The IMCLs of tissue and cells were subjected to oil red O staining. The RNA and protein expression of PPARγ, myogenin, mTORC1 and members of the PI3K/AKT pathway in skeletal muscle tissue and C2C12 cells was examined. Differences between the different intervention groups were determined.Results: IMCLs were significantly increased in mice with obesity induced by a high-fat diet and the C2C12 cell line treated with palmitic acid compared to the corresponding controls. mTORC1 phosphorylation and PPARγ levels were also increased, and AKT phosphorylation and myogenin levels were decreased. Intervention with JPQHF reversed the above changes. In addition, the PPARγ level in C2C12 cells was reduced after intervention with rapamycin, an inhibitor of mTORC1. However, AKT phosphorylation and myogenin levels did not recover after rapamycin intervention.Conclusion: IMCLs were significantly increased in obese C57 mice and palmitic acid-treated C2C12 cells. JPQHF reduced IMCLs both in vivo and in vitro. Mechanistically, this effect likely occurred through JPQHF-mediated inhibition of the overactivation of mTORC1 and a subsequent reduction in the expression of PPARγ. However, the function of JPQHF in elevating myogenin levels and the PI3K/AKT pathway may not be entirely dependent on mTORC1.

scholarly journals Interaction of Pre‐natal and Post‐Weaning High Fat Diet on Adult Mouse Skeletal Muscle Vitamin D Homeostasis

2015 ◽  
Vol 29 (S1) ◽  
Author(s):  
Lucy Green ◽  
Megan Godden ◽  
Melissa Doherty ◽  
Lisa Jones ◽  
Kirsten Poore ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Vitamin D ◽  
High Fat Diet ◽  
Adult Mouse ◽  
High Fat ◽  
Mouse Skeletal Muscle

Global Gene Expression responses to 16-week High Fat Diet in Skeletal Muscle of C57BL/6 Mice

2010 ◽  
Vol 42 ◽  
pp. 464
Author(s):  
Sujuan Liu ◽  
Yanmei Niu ◽  
Hairui Yuan ◽  
Xiaolei Liu ◽  
Chi Sun ◽  
...  
Keyword(s):  
Gene Expression ◽  
Skeletal Muscle ◽  
High Fat Diet ◽  
Global Gene Expression ◽  
High Fat
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