Abstract
Introduction. The prevalence of nonalcoholic fatty liver disease (NAFLD) in western countries is increasing rapidly and is considered as component of metabolic syndrome. Endothelial dysfunction is a pathophysiological problem of cardiovascular disease. NAFLD, as a component of metabolic syndrome, is associated with endothelial dysfunction. 
 Material and methods. PubMed database was used in order to review and select articles according to the keywords. A total of 216 articles matching search criteria were found between 2000-2021. 
 Results. The present study has been underlined the role of pathophysiological mechanisms of endothelial dysfunction in nonalcoholic fatty liver disease, which involves oxidative stress, inflammation and insulin resistance. The main factor in the occurrence of endothelial dysfunction is related to nitric oxide (NO) biosynthesis. The markers associated with regulation of nitric oxide biosynthesis, such as asymmetric dimethylarginine, free fatty acid, lectin-like oxidized low-density lipoprotein (LDL) receptor-1 and pentraxin-3, are potential targets in the assessment of endothelial dysfunction. 
 Conclusions. Insulin resistance, inflammation and oxidative stress have been involved in the reduction of NO biosynthesis that influences the occurrence of endothelial dysfunction. Markers, such as lectin-like oxidized LDL receptor-1 and pentraxin-3, have been considered as potential targets in the assessment of endothelial dysfunctions in NAFLD.
Highlights
The prevalence of nonalcoholic fatty liver disease (NAFLD) in western countries is increasing rapidly and is considered as component of metabolic syndrome
Nonalcoholic fatty liver disease (NAFLD) is a group of conditions occurring in patients without alcohol consumption, it has broad spectrum of manifestation ranging from simple steatosis to nonalcoholic steatohepatitis (NASH), more severe form of NAFLD, which eventually progresses to cirrhosis and hepatocellular carcinoma (HCC) [4]
Distribution of this layer is characterized by circulating endothelial progenitor cell (EPC) which plays the major role in regeneration of the endothelial lining of blood vessels
Summary
The prevalence of nonalcoholic fatty liver disease (NAFLD) in western countries is increasing rapidly and is considered as component of metabolic syndrome. The present study has been underlined the role of pathophysiological mechanisms of endothelial dysfunction in nonalcoholic fatty liver disease, that involves oxidative stress, inflammation and insulin resistance. Inflammation and oxidative stress have involved in reduction of NO biosynthesis that influence occurrence of endothelial dysfunction. Markers, such as lectin-like oxidized LDL receptor-1 and pentraxin-3, have considered as potential targets in assessment of endothelial dysfunctions in NAFLD. The relation between endothelial dysfunction and NAFLD among patient with absence of any risk factors for cardiac disease is established [8] This explains that NAFLD isn’t related to comorbidity, but it might be involved in cardiovascular disease (CVD) pathogenesis. NAFLD is associated with endothelial dysfunction and arterial stiffness [12]
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