scholarly journals Oxidative Stress-Mediated Mitochondrial Dysfunction Contributes to Angiotensin II-Induced Nonalcoholic Fatty Liver Disease in Transgenic Ren2 Rats

2009 ◽  
Vol 174 (4) ◽  
pp. 1329-1337 ◽  
Author(s):  
Yongzhong Wei ◽  
Suzanne E. Clark ◽  
John P. Thyfault ◽  
Grace M.E. Uptergrove ◽  
Wenhan Li ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Liver Disease ◽  
Angiotensin Ii ◽  
Fatty Liver ◽  
Mitochondrial Dysfunction ◽  
Nonalcoholic Fatty Liver Disease ◽  
Fatty Liver Disease ◽  
Nonalcoholic Fatty Liver

scholarly journals Capybara Oil Improves Hepatic Mitochondrial Dysfunction, Steatosis, and Inflammation in a Murine Model of Nonalcoholic Fatty Liver Disease

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Polyana C. Marinho ◽  
Aline B. Vieira ◽  
Priscila G. Pereira ◽  
Kíssila Rabelo ◽  
Bianca T. Ciambarella ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Liver Disease ◽  
Fatty Liver ◽  
Mitochondrial Dysfunction ◽  
Nonalcoholic Fatty Liver Disease ◽  
Hepatic Steatosis ◽  
Fatty Liver Disease ◽  
Nonalcoholic Fatty Liver ◽  
Positive Effects ◽  
And Oxidative Stress

Nonalcoholic fatty liver disease (NAFLD) is recognized as the most common cause of liver dysfunction worldwide and is commonly associated with obesity. Evidences suggest that NAFLD might be a mitochondrial disease, which contributes to the hepatic steatosis, oxidative stress, cytokine release, and cell death. Capybara oil (CO) is a rich source of polyunsaturated fatty acids (PUFA), which is known to improve inflammation and oxidative stress. In order to determine the effects of CO on NAFLD, C57Bl/6 mice were divided into 3 groups and fed a high-fat diet (HFD) (NAFLD group and NAFLD + CO group) or a control diet (CG group) during 16 weeks. The CO (1.5 g/kg/daily) was administered by gavage during the last 4 weeks of the diet protocol. We evaluated plasma liver enzymes, hepatic steatosis, and cytokine expression in liver as well as hepatocyte ultrastructural morphology and mitochondrial function. CO treatment suppressed hepatic steatosis, attenuated inflammatory response, and decreased plasma alanine aminotransferase (ALT) in mice with NAFLD. CO was also capable of restoring mitochondrial ultrastructure and function as well as balance superoxide dismutase and catalase levels. Our findings indicate that CO treatment has positive effects on NAFLD improving mitochondrial dysfunction, steatosis, acute inflammation, and oxidative stress.

scholarly journals Oxidative Stress and Nonalcoholic Fatty Liver Disease in Hemodialysis Patients

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Po-Jung Wu ◽  
Jin-Bor Chen ◽  
Wen-Chin Lee ◽  
Hwee-Yeong Ng ◽  
Shu-Ching Lien ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Mitochondrial Dna ◽  
Liver Disease ◽  
Fatty Liver ◽  
Nonalcoholic Fatty Liver Disease ◽  
Fatty Liver Disease ◽  
Cellulose Membrane ◽  
Nonalcoholic Fatty Liver ◽  
Factors Associated ◽  
Copy Numbers

Introduction. Nonalcoholic fatty liver disease (NAFLD) is becoming more common around the world and it may progress to cirrhosis and liver failure, increasing mortality risk. In hemodialysis (HD) patients, NAFLD may be a novel risk factor for their high cardiovascular mortality. Heightened oxidative stress is highly prevalent in HD patients. However, the relationship between oxidative stress and NAFLD in HD patients is not well defined.Methods. We studied seventy-one stable nondiabetic HD patients. Nineteen patients had the diagnosis of NAFLD by ultrasonography. Blood levels of oxidative stress markers were measured in each patient, including thiobarbituric acid reactive substances (TBARS), free thiols, superoxide dismutase (SOD) activities, and glutathione peroxidase (GPx) activity. The copy numbers of mitochondrial DNA (mtDNA) in peripheral leukocytes were also determined. Demographic, biochemistry, and hemogram data were recorded. The two groups of patients were compared in order to determine the factors associated with NAFLD in HD patients.Findings. Compared to those without NAFLD, nondiabetic HD patients with NAFLD had significantly higher mtDNA copy number and GPx levels. The two groups did not differ significantly in dialysis adequacy, hemoglobin, serum calcium, phosphorus, albumin, liver function tests, or lipid profiles. Regression analysis confirmed mtDNA copy numbers and GPx levels as two independent factors associated with NAFLD. Compared to those with polysulfone, patients dialyzed with cellulose membrane have significantly higher levels of TBARS. However, patients with or without NAFLD did not differ in their use of either dialysis membrane.Discussion. Oxidative stress (represented by antioxidant defense, GPx) and mitochondrial DNA copy numbers are independently associated with fatty liver disease in nondiabetic HD patients. The diagnostic and therapeutic implications of this key observation warrant further exploration.

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