Chia Seed Supplementation Reduces Senescence Markers in Epididymal Adipose Tissue of High-Fat Diet-Fed SAMP8 Mice

2018 ◽  
Vol 21 (8) ◽  
pp. 755-760 ◽  
Author(s):  
Yehua Rui ◽  
Shengyi Yang ◽  
Li-hua Chen ◽  
Li-qiang Qin ◽  
Zhongxiao Wan
2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Ying Shen ◽  
Su Jin Song ◽  
Narae Keum ◽  
Taesun Park

The present study aimed to investigate whether olive leaf extract (OLE) prevents high-fat diet (HFD)-induced obesity in mice and to explore the underlying mechanisms. Mice were randomly divided into groups that received a chow diet (CD), HFD, or 0.15% OLE-supplemented diet (OLD) for 8 weeks. OLD-fed mice showed significantly reduced body weight gain, visceral fat-pad weights, and plasma lipid levels as compared with HFD-fed mice. OLE significantly reversed the HFD-induced upregulation of WNT10b- and galanin-mediated signaling molecules and key adipogenic genes (PPARγ, C/EBPα, CD36, FAS, and leptin) in the epididymal adipose tissue of HFD-fed mice. Furthermore, the HFD-induced downregulation of thermogenic genes involved in uncoupled respiration (SIRT1, PGC1α, and UCP1) and mitochondrial biogenesis (TFAM, NRF-1, and COX2) was also significantly reversed by OLE. These results suggest that OLE exerts beneficial effects against obesity by regulating the expression of genes involved in adipogenesis and thermogenesis in the visceral adipose tissue of HFD-fed mice.


2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Meilin Hu ◽  
Fan Wu ◽  
Jinlong Luo ◽  
Jing Gong ◽  
Ke Fang ◽  
...  

Berberine (BBR) is the main active ingredient of a traditional Chinese herb Coptis chinensis. It has been reported to exhibit beneficial effects in treating diabetes and obesity. However, the underlying mechanism has not been fully elucidated. Adipose tissue fibrosis is a hallmark of obesity-associated adipose tissue dysfunction. HIF-1α plays a key role in adipose tissue fibrosis, which closely linked to metabolic dysfunction in obese state. We hypothesized that BBR may alleviate obesity-induced adipose tissue fibrosis and associated metabolic dysfunction through inhibition of HIF-1α. To test this hypothesis, we treated high fat diet (HFD) feeding mice with different dose of BBR (100 mg/kg, 200 mg/kg, and 300 mg/kg) for 8 weeks. We found that BBR treatment greatly decreased the body weight gain and reduced insulin resistance induced by HFD. Data also revealed that BBR improved histologic fibrous of epididymal white adipose tissue (eWAT) and was accompanied with inhibition of the abnormal synthesis and deposition of extracellular matrix (ECM) proteins, such as collagen and fibronectin. We also found that BBR treatment suppressed the expression of HIF-1α and decreased the mRNA expression of LOX in epididymal adipose tissue, which plays a key role in fibrosis development. Taken together, these results suggest that BBR can regulate metabolic homeostasis and suppress adipose tissue fibrosis through inhibiting the expression of HIF-1α.


2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Chorng-Kai Wen ◽  
Tzung-Yan Lee

Suppression of white adipose tissue inflammatory signaling may contribute to the pathogenesis of obesity-induced inflammatory response. However, the precise mechanism of efficacy of acupuncture related to adipose tissue remains poorly understood. In the present study we evaluated the anti-inflammatory activities of 10 Hz electroacupuncture (EA) which was applied at the acupoint Zusanli (ST36) for 20 min per day in high-fat diet- (HFD-) induced obesity model. Treatment lasted for one week. Obese rats treated with EA showed significantly reduced body weight compared with the rats in HFD group. EA decreased the number of F4/80 and CD11b-positive macrophages in epididymal adipose tissue. We found that 10 Hz EA given 7 days/week at ST36 acupoints significantly alleviated macrophage recruitment and then improved the obesity-associated factors of sterol regulatory element-binding protein-1 (SREBP-1) and target genes expression in rats with HFD. Adipose tissue inflammatory responses indicated by tumor necrosis factor-α(TNF-α), IL-6, monocyte chemotactic protein-1 (MCP-1), and CD68 mRNA expression were significantly reduced by EA in obese rats. Additionally, EA was found to significantly reduced serum levels of TNF-α, IL-6, and IL-1 in this model. These results indicated that EA improved adipose tissue inflammatory response in obese rats, at least partly, via attenuation of lipogenesis signaling.


2020 ◽  
Vol 4 (Supplement_2) ◽  
pp. 436-436
Author(s):  
Hercia Martino ◽  
Mariana Grancieri ◽  
Renata Toledo ◽  
Thaisa Veridiano ◽  
Cintia Tomaz Sant'Ana ◽  
...  

Abstract Objectives To evaluate the effects of digested total proteins (DTP) from chia seed to prevent adipogenesis and adipose tissue inflammation in mice fed a high-fat diet. Methods C57Bl/6 black mice (n = 44; 8 weeks old) where divided in 4 groups (n = 12 each): negative control (NC; standard diet AIN-93M); positive control (PC; high fat diet- HFD- 60% of lipids); normal diet + DTP (NH; standard diet + 400 mg/kg of body/day of DTP); high-fat diet plus DTP (HFH; HFD + 400 mg/kg of body/day of DTP). After 9 weeks of treatment, the animals were euthanized and the blood and the adipose tissue (total) were collected. Plasma was used to analyze total cholesterol, high-density (HDL) and low-density (LDL) lipoprotein cholesterol, triacylglycerides (TGL), aspartate (AST) and alanine (ALT) aminotransferase levels by colorimetry. Waist circumference was measured by metric tape in the middle portion between the anus and mouth and the quantity of p-p65-NF-κB and PPAR-Y ELISA test. Histomorphometric analysis was determined in adipose tissue staining with hematoxylin/eosin to determined adipocytes area and foci of inflammation by the average of 1000 cells/group. Data were analyzed by ANOVA and post-hoc of Newman-Kews (P < 0.05). The study protocol was approved by the Ethics Committee of the Federal University of Viçosa (Protocol 01/2019). Results DTP from chia seed reduced the plasmatic levels of total cholesterol (−17.5%), LDL (−42.8%), TGL (−12.3%), and waist circumference (−5.5%) in obesity mice DTP-treated (P < 0.05). The treatment with DTP reduced the adipocytes area in HFH group by −15.1% and the foci of inflammation in −78.1% in comparison with PC (P < 0.05). The levels of p-p65-NF-κB in adipose tissue were reduced by DTP in mice fed a HFD in −41.1% (P < 0.05). However, PPAR-γ levels, body fat (%), Lee index, and HDL levels were not changed by DTP (P > 0.05). The levels of AST and ALT were not affected by HFD or DTP (P > 0.05). Conclusions DTP from chia seed had an anti-inflammatory and even an anti-adipogenic effect. These results show the effectiveness of digested proteins from chia seed against obesity and its associated inflammation. Funding Sources CNPq and CAPES (Brazil), and ACES (USA).


Nutrients ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 604 ◽  
Author(s):  
Jung Eun Park ◽  
Suk-Heung Oh ◽  
Youn-Soo Cha

Our previous study reported that lactic acid bacteria (L. brevis OPK-3) isolated from kimchi ameliorated intracellular lipid accumulation in 3T3-L1 adipocyte. The current study explored potential roles of L. brevis OPK-3 (KLAB) on preventing body weight gain and its effect on the inflammatory response of adipose tissue. Male C57BL/6 mice (n = 10) were divided into four groups: normal diet with distilled water (NDC), high-fat diet with distilled water (HDC), high-fat diet with L-ornithine (OTC) or high-fat diet with KLAB. The KLAB supplement resulted in significantly lower body weight, lower epididymal fat tissue mass, and lower serum and hepatic TG levels than the HDC. KLAB supplementation improved serum cytokines, and real-time polymerase chain reaction (PCR) analysis showed significantly lower inflammatory cytokine mRNA levels in epididymal adipose tissue. These results suggest that the administration of KLAB inhibits the induction of inflammation in adipose tissue along with the inhibition of weight gain. Therefore, this study demonstrates the therapeutic and beneficial value of this strain produced during the fermentation of kimchi.


PPAR Research ◽  
2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Yang Long ◽  
Xiang-Xun Zhang ◽  
Tao Chen ◽  
Yun Gao ◽  
Hao-Ming Tian

Increased levels of free fatty acids (FFAs) and hypertriglyceridemia are important risk factors for cardiovascular disease. The effective fraction isolated from radix astragali (RA) has been reported to alleviate hypertriglyceridemia. The mechanism of this triglyceride-lowering effect of RA is unclear. Here, we tested whether activation of the mTORC1-PPARγsignaling pathway is related to the triglyceride-lowering effect of RA. High-fat diet-induced obese (DIO) rats were fed a high-fat diet (40% calories from fat) for 9-10 weeks, and 4 g/kg/d RA was administered by gavage. RA treatment resulted in decreased fasting triglyceride levels, FFA concentrations, and adipocyte size. RA treated rats showed improved triglyceride clearance and fatty acid handling after olive oil overload. RA administration could also decrease macrophage infiltration and expression of MCP-1 and TNFα, but it may also increase the expression of PPARγin epididymal adipose tissue from RA treated rats. Consistently, expressions of PPARγand phospho-p70S6K were increased in differentiated 3T3-L1 adipocytes treated with RA. Moreover, RA couldnot upregulate the expression of PPARγat the presence of rapamycin. In conclusion, the mTORC1-PPARγsignaling pathway is a potential mechanism through which RA exerts beneficial effects on the disturbance of triglyceride metabolism and dysfunction of adipose tissue in DIO rats.


2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Yeji Choi ◽  
Yasuko Yanagawa ◽  
Sungun Kim ◽  
Wan Kyunn Whang ◽  
Taesun Park

The objective of the present study was to determine whetherArtemisia iwayomogi(AI) extract reduces visceral fat accumulation and obesity-related biomarkers in mice fed a high-fat diet (HFD), and if so, whether these effects are exerted by modulation of the expression of genes associated with adipogenesis and inflammation. AI extract supplementation for 11 weeks significantly prevented HFD-induced increments in body weight, visceral adiposity, adipocyte hypertrophy, and plasma levels of lipids and leptin. Additionally, AI extract supplementation resulted in downregulation of adipogenic transcription factors (PPARγ2 and C/EBPα) and their target genes (CD36, aP2, and FAS) in epididymal adipose tissue compared to the HFD alone. The AI extract effectively reversed the HFD-induced elevations in plasma glucose and insulin levels and the homeostasis model assessment of insulin resistance index. Furthermore, the extract significantly decreased gene expression of proinflammatory cytokines (TNFα, MCP1, IL-6, IFNα, and INFβ) in epididymal adipose tissue and reduced plasma levels of TNFαand MCP1 as compared to HFD alone. In conclusion, these results suggest that AI extract may prevent HFD-induced obesity and metabolic disorders, probably by downregulating the expression of genes related to adipogenesis and inflammation in visceral adipose tissue.


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