Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0948265 (metabolic syndrome)
 24,271 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Non-alcoholic fatty liver disease (NAFLD) is the hepatic component of the metabolic syndrome and is known to be associated with marked insulin resistance and increased risk of cardiovascular disease. Ezetimibe, an inhibitor of intestinal cholesterol absorption, inhibits Niemann-Pick C1-like 1 (NPC1L1). Interestingly, NPC1L1 is abundantly expressed in human liver, as well as in the intestine. Recent reports suggest a potential benefit of ezetimibe in improving hepatic insulin sensitivity and decreasing hepatic inflammation and lipid accumulation. Insulin resistance and excess hepatic fat accumulation are regarded as key factors in the pathogenesis of NAFLD. We suggest, therefore, that urgent studies are needed to assess the potential therapeutic benefit of ezetimibe in treating NAFLD.
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PMID:Ezetimibe as a potential treatment for non-alcoholic fatty liver disease: is the intestine a modulator of hepatic insulin sensitivity and hepatic fat accumulation? 2060 Oct 94

Non-alcoholic fatty liver disease (NAFLD) is the most common chronic liver disease in Western countries and also in other parts of the world. NAFLD encompasses a histological spectrum ranging from simple steatosis to steatohepatitis, advanced fibrosis and inflammatory changes. It frequently occurs with features of the metabolic syndrome including obesity, type 2 diabetes mellitus, dyslipidemia and hypertension. In fact, the metabolic syndrome is a strong predictor of NAFLD. Recently, Niemann-Pick C1-like 1 (NPC1L1) has been shown to play a pivotal role in cholesterol absorption. Unlike mouse NPC1L1 protein, predominantly expressed in the intestines, human and rat NPC1L1 is also abundantly expressed in the liver. Though the exact functions of hepatic NPC1L1 remain unknown, NPC1L1 may facilitate the hepatic accumulation of cholesterol. This raises a potential possibility that ezetimibe may improve fatty liver formation. In this review, potential role of lipid metabolism in NAFLD and its possible modulation through NPC1L1 blockade is discussed.
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PMID:Novel role of NPC1L1 in the regulation of hepatic metabolism: potential contribution of ezetimibe in NAFLD/NASH treatment. 2104 16

Nonalcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH) are multidisciplinary liver diseases that often accompany type 2 diabetes or metabolic syndrome, which are characterized by insulin resistance. Therefore, effective treatment of type 2 diabetes and metabolic syndrome should target not only the cardiometabolic abnormalities, but also the associated liver disorders. In the last decade, it has been shown that metformin, thiazolidinediones, vitamin E, ezetimibe, n-3 polyunsaturated fatty acids, renin-angiotensin system (RAS) blockers, and antiobesity drugs may improve hepatic pathophysiological disorders as well as clinical parameters. Accordingly, insulin sensitizers, antioxidative agents, Niemann-Pick C1-like 1 (NPC1L1) inhibitors, RAS blockers, and drugs that target the central nervous system may represent candidate pharmacotherapies for NAFLD and possibly NASH. However, the efficacy, safety, and tolerability of long-term treatment (potentially for many years) with these drugs have not been fully established. Furthermore, clinical trials have not comprehensively examined the efficacy of lipid-lowering drugs (i.e., statins, fibrates, and NPC1L1 inhibitors) for the treatment of NAFLD. Although clinical evidence for RAS blockers and incretin-based agents (GLP-1 analogs and dipeptidyl peptidase-4 inhibitors) is also lacking, these agents are promising in terms of their insulin-sensitizing and anti-inflammatory effects without causing weight gain.
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PMID:Multidisciplinary pharmacotherapeutic options for nonalcoholic Fatty liver disease. 2330 32

Ezetimibe is a unique inhibitor of intestinal cholesterol absorption. Ezetimibe selectively inhibits intestinal cholesterol absorption by blocking Niemann-Pick C1-like 1 (NPCIL1). Ezetimibe accelerates VLDL and TG degradation. Therefore, ezetimibe ameliorates postprandial hyperlipidemia. Ezetimibe inhibited the progression of nonalcoholic fatty liver disease (NAFLD) by correcting insulin resistance and decreasing small dense LDL-C in human subjects. In clinical study, ezetimibe administration combined with statin failed to inhibit progression of IMT thickness in ENHANCE (Ezetimibe and Simvastatin in Hypercholesterolemia Enhances Atherosclerosis Regression) study. In this study baseline IMT thickness (0.7 mm) of patients was within normal range. Therefore only two years observation was too short to demonstrate anti-atherogenic effects of ezetimibe. SEAS(Simvastatin and Ezetimibe in Aortic Stenosis) trial examined effects of combination therapy with ezetimibe and statin in patients with aortic stenosis. Combination therapy could not inhibit progression of aortic stenosis. However, events of ischemic heart disease, especially CABG were significantly decreased only in combination group. Statin was not reported to reduce CVD(cardiovascular disease) in moderate to severe CKD patients. In SHARP(Study of Heart and Renal Protection) study, patients with severe renal disease were allocated either for statin alone group or combination therapy group with statin and ezetimibe. Combination therapy significantly decreased non-hemorrhagic stroke by 25 % compared with statin alone group in severe CKD and HD(hemodialysis) patients. Ezetimibe has unique lipid lowering profile increasing HDL-C concomitant with decreasing LDL-C and TG. Ezetimibe should be initiated first in patients with insulin resistant metabolic syndrome. Ezetimibe should be combined with statin to reduce not only LDL-C but RLP-C(remnant like lipoprotein particle choletserol) in type IIb dyslipidemia.
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PMID:[An inhibitor of intestinal cholesterol transporter]. 2420 31