Conclusions
NAFLD is currently the commonest cause for elevated liver enzymes in clinical practice. Its pathophysiology is complex but insulin resistance seems to be critical in both its development and progression. Future prospects of therapy are based on a better knowledge of NAFLD pathophysiology, particularly on the role of oxidative stress and certain adipokines such as TNF-α and adiponectin. Finally, given the epidemic nature of NAFLD and its close association with obesity and metabolic syndrome, large-scale and integrated health interventions are advisable aiming to promote lifestyle changes among the general population and particularly in children and adolescents. This would surely impact on the NAFLD-related disease's burden in the near future.
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This work was partially supported by a Grant from the Fondo Nacional de Ciencia y Tecnología (FONDECYT #1050780 to Marco Arrese) and a Grant from the Medica Sur Clinic & Foundation to Nahum Méndez-Sánchez.
ACC = acetyl-CoA carboxylase; DNL = de novo lipogenesis; FAS = fatty acid synthetase; FFA = free fatty acid; HNE = hydroxynonenal; IR = insulin receptor; IRS = insulin receptor substrate; JNK = c-Jun N-terminal kinase; LXR = liver X receptor; MDA = malondialdehyde; MTP = microsomal triglyceride transfer; NAFLD = nonalcoholic fatty liver disease; NASH = nonalcoholic steatohepatitis; PPAR = peroxisome proliferators activator receptor; PUFA = polyunsaturated fatty acid; ROS = reactive oxygen species; RXR = retinoid C receptor; SCD-1 = stearoyl-CoA desaturase; SOCS = suppressor of cytokine signaling; SREBP = sterol-regulatory element-binding protein; TG = triglyceride; TGF-ß = transforming growth factor-beta; TNF-α = tumor necrosis factor alpha; VLDL = very-low density lipoprotein.
Nahum Méndez-Sánchez, MD, PhD, Departments of Biomedical Research, Gastroenterology & Liver Unit, Medica Sur Clinic & Foundation, Puente de Piedra 150, Col. Toriello Guerra, Mexico City, Mexico. Tel: +525 55606 6222, ext. 4215. Fax: +525 55666 4031. E-mail: nmendez@medicasur.org.mx
Liver International. 2007;27(4):423-433. © 2007 Blackwell Publishing
Cite this: Current Concepts in the Pathogenesis of Nonalcoholic Fatty Liver Disease - Medscape - May 01, 2007.
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