成人非酒精性脂肪肝与代谢综合征关系的研究

目的探讨非酒精性脂肪肝(NAFLD)和代谢综合征(MS)的关系。方法对2006年10～12月长沙市某企业3744例20岁以上职工进行问卷调查、体格检查、空腹血糖、血脂、丙氨酸转氨酶、血尿酸检测以及肝脏B超检查。结果(1)NAFLD患病率23.5%,MS患病率22.8%,两病的共患病率12.6%。(2)MS、中心性肥胖、血压升高、空腹血糖升高、高三酰甘油、低高密度脂蛋白胆固醇各组NAFLD患病风险分别是对照组的13.4～22.2倍。(3)以NAFLD取代MS5个组分中的任何一个后,与原诊断定义相比有较高一致性(Kappa值0.53～0.89,P<0.01)。(4)采用多因素Logistic回归分析,调整了性别、年龄和多项代谢成分的影响后,NAFLD与MS独立相关(OR2.342,95%CI:1.825～3.007;P<0.01)。结论该人群中1/5以上患有NAFLD和MS,且NAFLD与MS密切相关;NAFLD可纳入MS的组成成分。     

非酒精性脂肪性肝病与代谢综合征的相关性研究

目的分析非酒精性脂肪性肝病（NAFLD）与代谢综合征（MS）的关系。方法10357例在我院体检的普通人群入选本研究,检测人体学参数、生化指标及肝脏彩超,分析该人群NAFLD和MS的患病率,探讨MS组分与NAFLD的关系。结果10357例体检者中NAFLD的患病率为31．1％,MS患病率为23．6％,NAFLD合并MS患病率为15．5％。经年龄标化后NAFLD和MS患病率男性仍明显高于女性。将全部受试者按BM1分组后,各组间NAFLD、MS及NAFLD合并MS患病率差异均有统计学意义（P〈0．01）。选择同期体检无NAFLD的个体（非NAFLD组）,经性别、年龄、BMI与NAFLD组相匹配后,NAFLD组MS患病率明显高于非NAFLD组（59．8％VS5．2％,P〈0．01）。多因素Logistic回归分析表明：NAFI。D危险因素的前五位为TG、BMI、FPG、LDL-C和吸烟。结论即使排除BMI因素的影响,NAFLD患者MS的患病率仍然明显增高。NAFLD危险因素由高到低依次为TG、BMI、FPG、LDL-C、吸烟、TC、性别、血压、SUA及ALT。HDL-C为NAFLD保护性因素。     

非酒精性脂肪性肝病与代谢综合征相关性的临床研究

目的分析非酒精性脂肪性肝病与代谢综合征的关系。方法按住院顺序选择有随访资料病例共185例,将其分为四组（单纯脂肪肝组、单纯肥胖组、脂肪肝＋肥胖组、正常对照组）,在基线水平对四组出现代谢综合征情况进行横向比较。其次,在随访后再次对四组出现代谢综合征情况进行组内、组间比较。结果随访结束时,单纯脂肪肝组代谢综合征发病率明显高于正常对照组（P〈0.05）。结论非酒精性脂肪性肝病促进代谢综合征的发生,且不依赖于肥胖。     

成人非酒精性脂肪肝与代谢综合征相关性分析

目的分析成人非酒精性脂肪肝病（NAFLD）和代谢综合征（MS）的关系。方法对2007年6月～10月广元市北街社区3180例20岁以上居民进行体格检查及肝脏B超检查,并检测空腹血糖（FBG）、血脂和丙氨酸氨基转氨酶（ALT）。结果（1）NAFLD患病率为13．5％,MS患病率为16．5％,丽病共患率为9．5％。（2）MS、中心性肥胖、血压升高、FBG升高、高甘油三酯（TG）、高密度脂蛋白（HLD—C）降低,各组NAFLD患病风险是对照组的12．7～24．1倍。（3）以NAFLD取代诊断MS的5个组分中的任何一个后,与原诊断定义相比有较高的一致性。结论该社区中1／8以上人群患有NAFLD或MS,且NAFLD与MS密切相关,NAFLD可能是MS的重要组成成分。     

乌鲁木齐地区脂肪肝发病率及非酒精性脂肪肝与代谢综合征的关系

目的了解乌鲁木齐地区机关汉族成人非酒精性脂肪肝及酒精性脂肪肝的流行状况,并分析非酒精性脂肪肝与代谢综合征的关系。方法对1037例体检者的问卷调查、体格检查、生化、肝脏超声检查等相关资料进行分析。结果乌鲁木齐地区成人脂肪肝检出278例,脂肪肝发生率为检出率为26.8%,非酒精性脂肪肝188例,占18.1%,其中男性161例,女性27例;酒精性脂肪肝90例,占8.7%,其中男性84例,女性6例,男性NAFLD高于女性。NAFLD患者合并MS共计115例,伴有率为61.2%。结论乌鲁木齐地区机关汉族成人脂肪肝（NAFLD及AFLD）患病率远高于国内以及世界范围平均患病率,体现了低龄化趋势及中年年龄段的患病高峰特点;年龄、BMI、WHR、TG以及FPG为NAFLD的相关危险因素,NAFLD可以作为MS组成成分之一。     

臂?踝脉搏波传导速度与非酒精性脂肪性肝病及代谢综合征的研究进展

脉搏波传导速度（PWV）是近年发展起来的一个评估动脉弹性及僵硬度的早期敏感指标，因其检测具有操作简便、无创、可重复性好等优点而逐渐应用于临床。非酒精性脂肪性肝病（NAFLD）与代谢综合征均影响动脉硬化的发生和进展，而应用PWV可以早期检测到这些患者动脉硬化的发生。本文就臂?踝PWV（ba-PWV）与NAFLD及代谢综合征的相关研究进展作一综述。     

Non-alcoholic fatty liver syndrome: a hepatic consequence of common metabolic diseases

BACKGROUND AND AIMS: The association of liver steatosis with a number of common metabolic conditions has been suggested. The aim of the present study was to evaluate the clinical features of subjects with different severities of steatosis. METHODS: The present study was performed in 282 consecutive patients with 'bright liver' at ultrasonography and in 58 subjects without steatosis. They had no history of alcohol abuse and negative tests for the presence of hepatitis B and C virus. Patients underwent clinical examination, anthropometry, laboratory tests and routine liver ultrasonography. Steatosis was graded as absent, mild, moderate and severe. RESULTS: A progressive increase in the prevalence of obesity (P < 0.001), type 2 diabetes (P < 0.001), alanine aminotransferase (ALT) elevation (P < 0.001) and hypertriglyceridemia (P < 0.001), and a decrease of hypercholesterolemia (P < 0.05) was observed from the control group to the groups with mild, moderate and severe steatosis. More than half the subjects with liver steatosis had insulin resistance metabolic syndrome. Obesity, diabetes and hypertriglyceridemia were more common by 5.3-fold, 4.0-fold, and 6.7-fold, respectively, in subjects with severe steatosis, as compared to controls. Prevalence of obesity, diabetes and hyperlipidemia was significantly higher in subjects with fatty liver and ALT elevation. CONCLUSION: Fatty liver can be considered as the hepatic consequence of common metabolic diseases.     

老年人非酒精性脂肪肝病与代谢综合征的相关研究

目的调查老年体检人员非酒精性脂肪肝病（NAFLD）和代谢综合征（MS）及其相关疾病的情况。方法从参与本院体检的405名60岁及以上的老年人中选取313例（男224例,女89例）,平均76．08±7．53岁,检测身高、体重、腰围、体质指数（BMI）、空腹血糖、总胆固醇、甘油三脂、高密度脂蛋白及多普勒超声,并对结果分析。结果老年男、女性MS患病率分别为14．3％和20．2％,男、女NAFLD患病率为40．2％、36．0％。在MS各种组合中,男、女性均以肥胖、高血压、高血脂组合比例最高,占40％以上,NAFLD患病率在肥胖、高血压、高血脂、血糖异常组合中高达100％。NAFLD病人中的脑梗死、糖尿病、高血压比例较高,NAFLD病人的空腹血糖、甘油三酯、BMI、腰围也、显著高于非NAFLD,但血清胆固醇差异无统计学意义。NAFLD和MS相关（r=0．374,P〉0．01）。结论60岁及以上老年人的NAFLD和MS患病率均较高,NAFLD作为MS的一个组成部分应及早干预治疗。     

非酒精性脂肪肝与代谢综合征关系的研究

目的分析无糖尿病（DM）史的非酒精性脂肪性肝（NAFL）患者糖代谢异常及代谢综合征（MS）的伴随情况，探讨NAFL与MS的关系。方法测量NAFL组（118例）和对照组（56例）的形体参数、血压、血脂谱、OGTT等，MS采用NCEP-ATPⅢ定义。结果NAFL组糖代谢异常的比率达43．2％，明显高于对照组12．5％（P〈0．01）。NAFL组中MS伴有率明显高于对照组（31．4％VS5．4％，P=0．000）。Logistic回归分析显示2hPG、NAFL、肥胖家族史是MS的独立危险因素。以NAFL取代MS五个组分中的任何一个后，与原诊断定义相比一致性均很高（Kappa值均〉0．6，P〈0．0001）。结论无DM病史的NAFL患者糖代谢异常的比率、MS的伴有率明显增高。NAFL可以作为MS组成成分之一。     

非酒精性脂肪性肝病与代谢综合征关系研究进展

非酒精性脂肪性肝病的发病与胰岛素抵抗及其表型有关。胰岛素抵抗和代偿性高胰岛素血症是代谢综合征的中心环节。非酒精性脂肪性肝病是代谢综合征的临床疾病谱之一。非酒精性脂肪性肝病与动脉粥样硬化性心血管疾病、2型糖尿病及代谢综合征临床症候群的关系密切,本文就非酒精性脂肪肝与代谢综合征的关系作一综述。     

非酒精性脂肪性肝病与代谢综合征的流行现状及相关性研究

目的了解普通人群中非酒精性脂肪性肝病（NAFLD）及代谢综合征（MS）的患病率,探讨MS与NAFLD发生的关系。方法选择我院体检的普通人群共2374例,B超检查诊断脂肪肝,检测腰围、体重指数（BMI）、血压、丙氨酸氨基转氨酶、尿酸、血脂、空腹血糖（FBG）等指标,分析NAFLD和MS的患病率及MS相关组分与NAFLD的关系。结果共502人诊断为NAFLD,NAFLD患病率21．15％,男性高于女性。NAFLD组代谢综合征患病率50．4％,较对照组明显升高（P=0．001）。Logistic回归分析结果显示,NAFLD危险因素前三位分别是甘油三脂、FBG、BMI。结论普通人群中NAFLD的患病率呈上升趋势,NAFLD患者代谢综合征的患病率明显升高。     

非酒精性脂肪性肝病与代谢综合征指标变化的相关性分析

目的探讨中老年人群中非酒精性脂肪性肝病(NAFLD)与代谢综合征相关指标变化的关系。方法收集2010—2011年暨南大学附属第一医院40岁以上体检人群腹部B超检查的数据,用多因素Logistic回归分析体重指数(BMI)、空腹血糖(FBG)、三酰甘油(TG)、总胆固醇(TC)、高密度脂蛋白胆固醇(HDL-C)及低密度脂蛋白胆固醇(LDL-C)、丙氨酸转氨酶(ALT)、血尿酸(UA)的变化值与NAFLD变化的关系。结果 2年内男性组和女性组NAFLD检出率都在增加,男性新增NAFLD总检出率为13.7%,明显高于女性新增NAFLD检出率7.5%(P<0.05);男性和女性的NAFLD消减率都是5.5%,且峰值都在60岁年龄组;BMI变化值与新增NAFLD密切正相关,BMI变化值的OR=1.474(95%CI 1.184～1.811),而TG和FBG的变化值与新增NAFLD无相关性;TG和BMI的变化值与NAFLD的消减呈负相关,TG变化值的OR=0.653(95%CI 0.508～0.838),BMI变化值的OR=0.628(95%CI 0.460～0.857),而FBG变化值未发现与NAFLD消减有相关性。结论 BMI变化值与NAFLD发生有密切相关性,TG和BMI的变化值与NAFLD的消减呈负相关,是影响NAFLD变化的重要因素之一。     

Prevalence and risk factors for non-alcoholic fatty liver disease among adults in an urban Sri Lankan population

Background and Aims:  Non-alcoholic fatty liver disease (NAFLD) is an emerging problem in the Asia–Pacific region. However, its prevalence and risk factors in Asian (especially South Asian) communities is poorly studied. In this study, the aim was to determine the community prevalence and risk factors for NAFLD among adults in an urban Sri Lankan population.
Methods:  The study population consisted of 35–64-year-old adults, selected by stratified random sampling. NAFLD was diagnosed on established ultrasound criteria for fatty liver, safe alcohol consumption (< 14 units/week for men, < 7 units/week for females) and absence of hepatitis B and C markers. Blood pressure (BP) and anthropometric measurements were made, and fasting glucose, glycosylated hemoglobin, serum lipids, fasting serum insulin and serum alanine aminotransferase (ALT) were determined.
Results:  Of the 2985 study participants, 974 (32.6%) had NAFLD (605 [62.1%] women, mean age 52.8 years [standard deviation, 7.3]). On multivariate analysis, obesity, acanthosis nigricans, insulin resistance, elevated diastolic BP, fasting plasma glucose, plasma triglycerides, and ALT twice the upper limit of the reference range or more were independently associated with NAFLD.
Conclusion:  The prevalence of NAFLD among adults in this urban Sri Lankan community is high and is strongly associated with constituent features of the metabolic syndrome.     

Management of fatty liver disease with the metabolic syndrome

Non-alcoholic fatty liver disease (NAFLD) is the liver disease of this century, increasing in parallel with obesity, insulin resistance and the metabolic syndrome. NAFLD can be seen as a component of the metabolic syndrome, and as such, contributing as a risk factor for cardiovascular disease. In fact, these patients die more often from cardiovascular disease than from direct consequences of liver disease. In this review, we will summarize the data that link NAFLD as a central player in this dysmetabolism, as well as the evidence for appropriate therapy, in order to improve not only liver disease prognosis, but also the overall prognosis and risk of mortality, with particular focus on cardiovascular risk.     

非酒精性脂肪性肝病与代谢综合征

非酒精性脂肪性肝病(NAFLD)是一种包括从单纯的肝脂肪变性到非酒精性脂肪性肝炎,以致最终发展为肝硬化的一组肝脏慢性广谱性临床病理综合征。近年来大量研究表明,NAFLD与代谢综合征(MS)的各个组分密切伴随,甚至有学者将其作为MS的组分之一,并发现胰岛素抵抗在NAFLD发病机制中起关键作用。迄今对NAFLD的发病机制还了解甚少,目前广泛接受的一个理论是“二次打击”假说。脂肪酸和甘油三酯在肝脏沉积造成的“第一次打击”之后,肝细胞对氧化应激和炎症因子作用导致的“第二次打击”的敏感性增加而引起肝损害。本文主要目的是对NAFLD的临床病理特点、与胰岛素抵抗及MS的关系以及可能的分子机制进行综述,同时也介绍了目前预防和治疗NAFLD的策略。     

Impact of non-alcoholic fatty liver disease on accelerated metabolic complications

Insulin resistance is the basis of both non-alcoholic fatty liver disease (NAFLD) and metabolic syndrome (MetS), the two conditions are often found in the same individual. The mortality of patients with NAFLD is significantly higher than that among the general population and cardiovascular risk may compete with liver-related risk in dictating the final outcome. Recent prospective studies have reported that NAFLD is associated with an increased incidence of MetS and type 2 diabetes mellitus, independent of obesity and other components of MetS. Thus, NAFLD may not only be a liver disease but also an early mediator of type 2 diabetes mellitus and MetS. The biological mechanisms by which NAFLD contributes to a higher risk of developing metabolic disorders are not fully understood. However, the fatty liver could contribute in the same way as visceral adipose tissue to insulin resistance, systemic inflammation and oxidative stress, while the decreased serum adiponectin concentrations might also be part of the mechanism. In contemporary clinical practice, it has become mandatory to evaluate the metabolic risk factors in NAFLD patients and to consider careful surveillance and aggressive treatment, not only of the resultant liver disease, but also of the possible underlying metabolic and vascular complications. Future studies might address the question whether earlier adjustment to a more efficient lifestyle or a pharmacological treatment that mobilizes fat out of the liver could reduce these risks.     

非酒精性脂肪性肝病在心血管疾病发生发展中的作用

随着经济水平的提高、饮食结构和生活方式的改变,非酒精性脂肪性肝病(non-alcoholic fatty liver disease,NAFLD)的发病率不断上升,逐渐成为全球慢性肝病的主要病因.心血管疾病(cardiovascular disease,CVD)作为NAFLD患者的主要死亡原因,越来越多的研究发现两者之间存在相关性;NAFLD患者CVD发生发展的风险更大,其机制可能与血管和内皮细胞功能障碍、胆汁酸代谢、氧化应激、全身炎症反应和肾素-血管紧张素系统的激活等相关.其中,代谢综合征在两者联系中发挥了重要的作用.因此,早期识别NAFLD患者心血管疾病相关危险因素,进而减少心血管相关并发症,对于改善该类患者的预后至关重要.     

Non-alcoholic fatty liver disease: further expression of the metabolic syndrome

Non-alcoholic fatty liver disease has been associated with metabolic disorders, including central obesity, dyslipidemia, hypertension and hyperglycemia. Metabolic syndrome, obesity, and insulin resistance are major risk factors in the pathogenesis of non-alcoholic fatty liver disease. Non-alcoholic fatty liver disease refers to a wide spectrum of liver damage, ranging from simple steatosis to non-alcoholic steatohepatitis, advanced fibrosis and cirrhosis.     

The relationship between obesity and the severity of non-alcoholic fatty liver disease: systematic review and meta-analysis

Introduction: A number of researches have explored the association between obesity and nonalcoholic fatty liver disease (NAFLD) liver function, histopathology, complications, genetic factors and prognosis, but the results were conflicting and inconclusive.

Areas covered: In this meta-analysis, the liver function, histopathology, metabolic complications, patatin-like phospholipase domain-containing protein 3 (PNPLA3) genetic polymorphism and prognosis were compared between non-obese and obese NAFLD. Pubmed, EMBASE, Cochrane databases were searched to identify eligible studies. The odds ratio (OR) or standardized mean difference (SMD) with 95% confidence intervals (CI) were pooled using fixed- or random-effects models.

Expert commentary: This meta-analysis indicated that for NAFLD patients, obesity (according to ethnic-specific BMI cut-off points to define obesity) could predict a worse long-term prognosis. However, obesity may not be an independent factor for the development of NASH or advanced fibrosis in NAFLD patients and NAFLD should be considered as potential population for pharmacologic treatment regardless of obesity. In addition, PNPLA3 rs738409 may be more relevant to the progression of non-obese NAFLD when compared to obese NAFLD. Importantly, large-sample, long-term follow-up cohort studies based on liver biopsy are highly needed due to limited liver pathology and long-term follow-up data at present.     

Association between non-alcoholic fatty liver disease and colorectal cancer

ABSTRACT

Introduction: Colorectal cancer (CRC) is a common malignancy, ranking fourth among the causes of cancer-related deaths globally. Its incidence has increased in recent decades, and now more than one million CRC patients are diagnosed and thousands die annually. The 5-year survival rate varies with the stage at diagnosis, are approximately 90% in the early stages of disease, and less than 10% in advanced disease. Non-alcoholic fatty liver disease (NAFLD), which is a major cause of chronic liver disease, and characterized by the accumulation of fat in hepatocytes, has also emerged as a risk factor for CRC, and to be related with the development of colorectal polyps.

Areas covered: The purpose of this current review is to summarize the main findings of studies that have investigated the role of NAFLD in development of CRC.

Expert opinion: Various molecular pathways are altered during the development of NAFLD, which are also important in CRC tumorigenesis. There is growing body of evidence showing the potential role of activation of pro-inflammatory, disruption of anti-inflammatory pathways, increasing the activity of pathways involved in cell proliferation/survival. Thus targeting these dysregulated pathways via novel inhibitors can be a potential therapy for CRC prevention in cases with NAFLD.