scholarly journals Attenuation of High-Fat Diet-Induced Rat Liver Oxidative Stress and Steatosis by Combined Hydroxytyrosol- (HT-) Eicosapentaenoic Acid Supplementation Mainly Relies on HT

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Francisca Echeverría ◽  
Rodrigo Valenzuela ◽  
Andrés Bustamante ◽  
Daniela Álvarez ◽  
Macarena Ortiz ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Eicosapentaenoic Acid ◽  
High Fat Diet ◽  
Control Diet ◽  
Liver Steatosis ◽  
Pharmacological Therapy ◽  
High Fat ◽  
Total Recovery ◽  
Nonalcoholic Fatty Liver ◽  
The Impact

Pharmacological therapy for nonalcoholic fatty liver disease (NAFLD) is not approved at the present time. For this purpose, the effect of combined eicosapentaenoic acid (EPA; 50 mg/kg/day) modulating hepatic lipid metabolism and hydroxytyrosol (HT; 5 mg/kg/day) exerting antioxidant actions was evaluated on hepatic steatosis and oxidative stress induced by a high-fat diet (HFD; 60% fat, 20% protein, and 20% carbohydrates) compared to a control diet (CD; 10% fat, 20% protein, and 70% carbohydrates) in mice fed for 12 weeks. HFD-induced liver steatosis (i) was reduced by 32% by EPA, without changes in oxidative stress-related parameters and mild recovery of Nrf2 functioning affording antioxidation and (ii) was decreased by 42% by HT, concomitantly with total regain of the glutathione status diminished by HFD, 42% to 59% recovery of lipid peroxidation and protein oxidation enhanced by HFD, and regain of Nrf2 functioning, whereas (iii) combined EPA + HT supplementation elicited 74% reduction in liver steatosis, with total recovery of the antioxidant potential in a similar manner than HT. It is concluded that combined HT + EPA drastically decreases NAFLD development, an effect that shows additivity in HT and EPA effects that mainly relies on HT, strengthening the impact of oxidative stress as a central mechanism underlying liver steatosis in obesity.

Protective Effects of Oral Lactobacillus rhamnosus on Liver Steatosis in Rats on High-Fat Diet

2020 ◽  
Vol 19 (3) ◽  
pp. 353-358
Author(s):  
Sevan Çetin Özbek ◽  
Mendane Saka ◽  
Nesrin Turhan ◽  
Elvan Hortaç Iştar ◽  
Cenk Mirza ◽  
...  
Keyword(s):  
Fatty Liver ◽  
Aspartate Aminotransferase ◽  
High Fat Diet ◽  
Histopathological Examination ◽  
Control Diet ◽  
Liver Steatosis ◽  
Diet Group ◽  
Protective Effects ◽  
High Fat ◽  
Nonalcoholic Fatty Liver

The purpose of this study was to investigate the effect of probiotic on fatty liver and metabolic endotoxemia in rats on high-fat diet. The rats were divided into three groups and fed one of the three diets (standard or control diet, high-fat diet, or high-fat+probiotic diet) for 16 weeks. At the end of this period, blood samples of the rats were taken and the liver tissue was removed for histopathology. There was an increase in the activities of both aspartate aminotransferase and alanine aminotransferase in the livers of rats on high-fat diet. However, only the rise in aspartate aminotransferase was blunted by incorporation of probiotics to the high-fat diet. Histopathological examination revealed 62.5% hepatosteatosis in high fat diet group and 12.5% in high-fat+probiotic diet group. In conclusion, the protective effect of probiotic supplement on liver steatosis caused by high-fat diet was histopathologically demonstrated; however, its effect on liver enzymes, inflammatory markers, and metabolic endotoxin was not observed. There is a need for further studies in terms of both dose and strain to recommend the use of probiotics in nonalcoholic fatty liver disease.

scholarly journals Flavonoids from Mulberry Leaves Alleviate Lipid Dysmetabolism in High Fat Diet-Fed Mice: Involvement of Gut Microbiota

2020 ◽  
Vol 8 (6) ◽  
pp. 860 ◽  
Author(s):  
Yinzhao Zhong ◽  
Bo Song ◽  
Changbing Zheng ◽  
Shiyu Zhang ◽  
Zhaoming Yan ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Lipid Metabolism ◽  
Gut Microbiota ◽  
High Fat Diet ◽  
Control Diet ◽  
Liver Steatosis ◽  
High Fat ◽  
Acetic Acid Production ◽  
Mulberry Leaves ◽  
Brown Adipose

Here, we investigated the roles and mechanisms of flavonoids from mulberry leaves (FML) on lipid metabolism in high fat diet (HFD)-fed mice. ICR mice were fed either a control diet (Con) or HFD with or without FML (240 mg/kg/day) by oral gavage for six weeks. FML administration improved lipid accumulation, alleviated liver steatosis and the whitening of brown adipose tissue, and improved gut microbiota composition in HFD-fed mice. Microbiota transplantation from FML-treated mice alleviated HFD-induced lipid metabolic disorders. Moreover, FML administration restored the production of acetic acid in HFD-fed mice. Correlation analysis identified a significant correlation between the relative abundances of Bacteroidetes and the production of acetic acid, and between the production of acetic acid and the weight of selected adipose tissues. Overall, our results demonstrated that in HFD-fed mice, the lipid metabolism improvement induced by FML administration might be mediated by gut microbiota, especially Bacteroidetes-triggered acetic acid production.

scholarly journals Effects of a Mixed Limosilactobacillus fermentum Formulation with Claimed Probiotic Properties on Cardiometabolic Variables, Biomarkers of Inflammation and Oxidative Stress in Male Rats Fed a High-Fat Diet

Foods ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 2202
Author(s):  
Micaelle Oliveira de Luna Freire ◽  
Luciana Caroline Paulino do Nascimento ◽  
Kataryne Árabe Rimá de Oliveira ◽  
Alisson Macário de Oliveira ◽  
Thiago Henrique Napoleão ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
High Fat Diet ◽  
Control Diet ◽  
Male Rats ◽  
Control Group ◽  
Low Grade ◽  
Probiotic Properties ◽  
High Fat ◽  
Low Grade Inflammation ◽  
And Oxidative Stress

High-fat diet (HFD) consumption has been linked to dyslipidemia, low-grade inflammation and oxidative stress. This study investigated the effects of a mixed formulation with Limosilactobacillusfermentum 139, L. fermentum 263 and L. fermentum 296 on cardiometabolic parameters, fecal short-chain fatty acid (SCFA) contents and biomarkers of inflammation and oxidative stress in colon and heart tissues of male rats fed an HFD. Male Wistar rats were grouped into control diet (CTL, n = 6), HFD (n = 6) and HFD with L. fermentum formulation (HFD-Lf, n = 6) groups. The L.fermentum formulation (1 × 109 CFU/mL of each strain) was administered twice a day for 4 weeks. After a 4-week follow-up, biochemical parameters, fecal SCFA, cytokines and oxidative stress variables were evaluated. HFD consumption caused hyperlipidemia, hyperglycemia, low-grade inflammation, reduced fecal acetate and propionate contents and increased biomarkers of oxidative stress in colon and heart tissues when compared to the CTL group. Rats receiving the L. fermentum formulation had reduced hyperlipidemia and hyperglycemia, but similar SCFA contents in comparison with the HFD group (p < 0.05). Rats receiving the L. fermentum formulation had increased antioxidant capacity throughout the colon and heart tissues when compared with the control group. Administration of a mixed L. fermentum formulation prevented hyperlipidemia, inflammation and oxidative stress in colon and heart tissues induced by HFD consumption.

Aromatic aldehyde compound cuminaldehyde protects nonalcoholic fatty liver disease in rats feeding high fat diet

2019 ◽  
Vol 38 (7) ◽  
pp. 823-832 ◽  
Author(s):  
MR Haque ◽  
SH Ansari
Keyword(s):  
Oxidative Stress ◽  
Liver Disease ◽  
Fatty Liver ◽  
High Fat Diet ◽  
Fatty Liver Disease ◽  
Liver Enzymes ◽  
Liver Weight ◽  
High Fat ◽  
Nonalcoholic Fatty Liver ◽  
And Oxidative Stress

Nonalcoholic fatty liver disease (NAFLD) is caused by fat accumulation and is related with obesity and oxidative stress. In this study, we investigated the effect of cuminaldehyde on NAFLD in rats fed a high fat diet (HFD). Male Wistar rats were fed a HFD for 42 days to induce NAFLD. The progression of NAFLD was evaluated by histology and measuring liver enzymes (alanine transaminase and aspartate transaminase), serum and hepatic lipids (total triglycerides and total cholesterol), and oxidative stress markers (thiobarbituric acid reactive substances, glutathione, superoxide dismutase, and catalase). The HFD feeding increased the liver weight and caused NAFLD, liver steatosis, hyperlipidemia, oxidative stress, and elevated liver enzymes. Administration of cuminaldehyde ameliorated the changes in hepatic morphology and liver weight, decreased levels of liver enzymes, and inhibited lipogenesis. Our findings suggest that cuminaldehyde could improve HFD-induced NAFLD via abolishment of hepatic oxidative damage and hyperlipidemia. Cuminaldehyde might be considered as a potential aromatic compound in the treatment of NAFLD and obesity through the modulation of lipid metabolism.

scholarly journals Selenoprotein W deficiency does not affect oxidative stress and insulin sensitivity in the skeletal muscle of high-fat diet-fed obese mice

2019 ◽  
Vol 317 (6) ◽  
pp. C1172-C1182 ◽  
Author(s):  
Min-Gyeong Shin ◽  
Hye-Na Cha ◽  
Soyoung Park ◽  
Yong-Woon Kim ◽  
Jong-Yeon Kim ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Insulin Resistance ◽  
Skeletal Muscle ◽  
Insulin Sensitivity ◽  
High Fat Diet ◽  
Control Diet ◽  
In Vivo Studies ◽  
Selenoprotein W ◽  
Obese Mice ◽  
High Fat

Selenoprotein W (SelW) is a selenium-containing protein with a redox motif found abundantly in the skeletal muscle of rodents. Previous in vitro studies suggest that SelW plays an antioxidant role; however, relatively few in vivo studies have addressed the antioxidant role of SelW. Since oxidative stress is a causative factor for the development of insulin resistance in obese subjects, we hypothesized that if SelW plays a role as an antioxidant, SelW deficiency could aggravate the oxidative stress and insulin resistance caused by a high-fat diet. SelW deficiency did not affect insulin sensitivity and H2O2 levels in the skeletal muscle of control diet-fed mice. SelW levels in the skeletal muscle were decreased by high-fat diet feeding for 12 wk. High-fat diet induced obesity and insulin resistance and increased the levels of H2O2 and oxidative stress makers, which were not affected by SelW deficiency. High-fat diet feeding increased the expression of antioxidant enzymes; however, SelW deficiency did not affect the expression levels of antioxidants. These results suggest that SelW does not play a protective role against oxidative stress and insulin resistance in the skeletal muscle of high-fat diet-fed obese mice.

scholarly journals Isocaloric Walnut Inclusion in a Palm-Based High-Fat and High-Cholesterol Diet Stabilizes Advanced Atheroma Plaque in ApoE-Deficient Mice

2020 ◽  
Vol 4 (Supplement_2) ◽  
pp. 693-693
Author(s):  
Iolanda Lázaro-López ◽  
Montserrat Cofán ◽  
Joaquín Surra ◽  
Carmen Gómez-Guerrero ◽  
Jesús Osada ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Palm Oil ◽  
High Fat Diet ◽  
Control Diet ◽  
High Cholesterol Diet ◽  
High Fat ◽  
Mediterranean Countries ◽  
M1 Macrophage ◽  
Atheroma Plaque ◽  
Deficient Mice

Abstract Objectives The presence of lipid-rich, unstable atheroma plaques in the vascular tree is the harbinger of cardiovascular events. There is a low prevalence of unstable atheroma plaques in Mediterranean countries. This might explain in part the lower rates of cardiovascular disease in Southern Europe compared to Northern Europe and US. Consumption of certain foods paradigmatic of the Mediterranean Diet delays atherosclerosis progression. In a mouse model of accelerated atherosclerosis, we investigated whether the inclusion of walnuts within an atherogenic diet stabilizes advanced atheroma plaque. Methods Apolipoprotein E-deficient mice (male, 10-week old) were randomized to receive either regular chow (9.6% of energy as fat, n = 14); a palm oil-based high-fat diet (43% of energy as fat, n = 15); or an isocaloric high-fat diet in which palm oil was partially replaced by walnuts in a dose equivalent to 30 g/d in humans (n = 14). All diets contained 0.2% cholesterol. After 15 weeks of intervention, we evaluated changes in aortic atherosclerotic lesions (size and composition) and markers for inflammation, oxidative stress, necrosis and autophagy. Results There were no among-group differences in atherosclerotic size and extension, or oxidative stress. Compared to control diet, palm oil-diet induced plaque instability (higher lipid and necrosis, and lower collagen-to-lipid ratio). Walnut inclusion attenuated these features and decreased macrophage infiltration. Palm oil-based diet increased expression of chemokines, cytokines, inflammasome, and M1-macrophage marker compared to control diet. Such response was not observed in walnut group. Findings for walnut group could be explained by the differential aortic activation of NF-kB (down-regulated) and Nrf2 and autophagy (up-regulated). Conclusions Isocaloric inclusion of walnuts within an unhealthy high-fat diet stabilizes advanced atheroma plaque. This contributes novel mechanistic evidence for the cardiovascular benefits of sustained walnut consumption. Funding Sources Instituto de Salud Carlos III, Spain; Fondo de Investigación Sanitaria–Fondo Europeo de Desarrollo Regional, Spain. California Walnut Commission.

scholarly journals Effects of Caffeine and Chlorogenic Acid on Nonalcoholic Steatohepatitis in Mice Induced by Choline-Deficient, L-Amino Acid-Defined, High-Fat Diet

Nutrients ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3886
Author(s):  
Erdenetsogt Dungubat ◽  
Shiori Watabe ◽  
Arisa Togashi-Kumagai ◽  
Masato Watanabe ◽  
Yasuyuki Kobayashi ◽  
...  
Keyword(s):  
Amino Acid ◽  
Chlorogenic Acid ◽  
Nonalcoholic Steatohepatitis ◽  
High Fat Diet ◽  
Cell Injury ◽  
Control Diet ◽  
Experimental Studies ◽  
High Fat ◽  
Nonalcoholic Fatty Liver ◽  
Hepatic Expression

Several recent experimental studies have investigated the effects of caffeine and chlorogenic acid (CGA), representative ingredients of coffee, on nonalcoholic fatty liver disease (NAFLD)/nonalcoholic steatohepatitis (NASH). However, the results are conflicting, and their effects are yet to be clarified. In the present study, we examined the effects of caffeine and CGA on choline-deficient, L-amino acid-defined, high-fat diet (CDAHFD)-fed mice, relatively new model mice of NASH. Seven-week-old male C57BL/6J mice were divided into the following groups: Control diet (control), CDAHFD (CDAHFD), CDAHFD supplemented with 0.05% (w/w) caffeine (caffeine), and CDAHFD supplemented with 0.1% (w/w) CGA (CGA). After seven weeks, the mice were killed and serum biochemical, histopathological, and molecular analyses were performed. Serum alanine aminotransferase (ALT) levels were significantly higher in the caffeine and CGA groups than in the CDAHFD group. On image analysis, the prevalence of Oil red O-positive areas (reflecting steatosis) was significantly higher in the caffeine group than in the CDAHFD group, and that of CD45R-positive areas (reflecting lymphocytic infiltration) in the hepatic lobule was significantly higher in the caffeine and CGA groups than in the CDAHFD group. Hepatic expression of interleukin (IL)-6 mRNA was higher in the caffeine and CGA groups than in the CDAHFD group, and the difference was statistically significant for the caffeine group. In conclusion, in the present study, caffeine and CGA significantly worsened the markers of liver cell injury, inflammation, and/or steatosis in NASH lesions in mice.

scholarly journals The Impact of DJOS Surgery, a High Fat Diet and a Control Diet on the Enzymes of Glucose Metabolism in the Liver and Muscles of Sprague-Dawley Rats

2019 ◽  
Vol 10 ◽  
Author(s):  
Dominika Stygar ◽  
Dorian Andrare ◽  
Barbara Bażanów ◽  
Elżbieta Chełmecka ◽  
Tomasz Sawczyn ◽  
...  
Keyword(s):  
Glucose Metabolism ◽  
High Fat Diet ◽  
Control Diet ◽  
Sprague Dawley ◽  
High Fat ◽  
Sprague Dawley Rats ◽  
The Impact

scholarly journals Effects of Diet-Induced Obesity and Deficient in Vitamin D on Spermatozoa Function and DNA Integrity in Sprague-Dawley Rats

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
O. Merino ◽  
R. Sánchez ◽  
B. M. Gregorio ◽  
F. J. Sampaio ◽  
J. Risopatrón
Keyword(s):  
Vitamin D ◽  
Dna Fragmentation ◽  
High Fat Diet ◽  
Control Diet ◽  
Sperm Function ◽  
Sprague Dawley ◽  
High Fat ◽  
Diet Induced Obesity ◽  
Sprague Dawley Rats ◽  
The Impact

Obesity has adverse effects on male fertility and usually is diagnosed with a prevalence of vitamin D deficiency (VD-). Discussion on the impact of obesity/VD- on sperm function has been limited. This study analyzed the effects of diet-induced obesity/VD- on viability and plasma membrane integrity (PMI), superoxide anion (O2-) level, and DNA fragmentation (DNAfrag) in sperm Sprague-Dawley rats. The males were randomized into four groups and fed for a period of 12 weeks: G1: control diet with vitamin D (C/VD+), G2: control diet without vitamin D (C/VD-), G3: high-fat diet with vitamin D (HF/VD+), and G4: high-fat diet without vitamin D (HF/VD-). Sperm function parameters were analyzed by flow cytometry. PMI percentages and O2- levels were not affected by any of the diets. DNA fragmentation was increasing significantly (p<0.05) in the spermatozoa of animals with diets vitamin D deficient (G2) and diet-induced obesity (G4). Our results allow us to point out that diet-induced obesity and VD- produce greater damage in DNA sperm of rats. The use of nutraceuticals containing vitamin D could be reducing the risk of fragmentation of DNA in spermatozoa.

Effect of curcumin on hepatic heme oxygenase 1 expression in high fat diet fed rats: is there a triangular relationship?

2014 ◽  
Vol 92 (10) ◽  
pp. 805-812 ◽  
Author(s):  
Yıldız Öner-İyidoğan ◽  
Sevda Tanrıkulu-Küçük ◽  
Muhammed Seyithanoğlu ◽  
Hikmet Koçak ◽  
Semra Doğru-Abbasoğlu ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Fatty Liver ◽  
Heme Oxygenase ◽  
High Fat Diet ◽  
Control Diet ◽  
Heme Oxygenase 1 ◽  
High Fat ◽  
Curcumin Treatment ◽  
Fat Accumulation ◽  
Hepatic Fat

High fat diet (HFD) is associated with oxidative stress induced fatty liver. Curcumin, an extract of Curcuma longa, has been shown to possess potent antioxidant and hypolipidemic properties. In this study, we investigated the effect of curcumin treatment on hepatic heme oxygenase-1 (HO-1) expression along with pro-oxidant–antioxidant status and lipid accumulation in rats fed an HFD. Male Sprague–Dawley rats were distributed among 4 groups: Group 1, which was fed the control diet (10% of total calories from fat); Group 2, which was fed the HFD (60% of total calories from fat); and groups 3 and 4, which received the HFD supplemented with curcumin and the control diet supplemented with curcumin (1 g/kg diet; w/w), respectively, for 16 weeks. HFD caused increases in hepatic lipid levels, production of reactive oxygen species, and lipid peroxidation. Further, HO-1 expression was significantly decreased. Histopathological examination showed hepatic fat accumulation and slight fibrotic changes. Curcumin treatment reduced hepatic lipids and oxidative stress parameters, and HO-1 expression was significantly increased. These findings suggest that increased HO-1 expression, along with suppressed oxidative stress as well as reduced hepatic fat accumulation and fibrotic changes, contribute to the beneficial effects of curcumin in attenuating the pathogenesis of fatty liver induced metabolic diseases.

Sign in / Sign up

Export Citation Format

Share Document