Medicine

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Epidemiology of Non-Alcoholic Fatty Liver Disease (NAFLD) among adults in an urban Sri Lankan community
(American Gastroenterological Association(AGA) Institute, Published by Elsevier Inc., 2008) Dassanayake, A.S.; Rajindrajith, S.; Kasturiratne, A.; Kalubowila, U.; de Silva, A.P.; Mizoue, T.; Makaya, M.; de Silva, H.J.
BACKGROUND - Non-alcoholic fatty liver disease (NAFLD) is increasing in the Asia-Pacific region.NAFLD can progress from simple steatosis, through steatohepatitis to advanced hepatic fibrosis, cirrhosis and hepatoma. Its prevalence in Sri Lanka is not known. OBJECTIVE: To investigate community prevalence and risk factors associated with NAFLD among adults in an urban Sri Lankan population. DESIGN, SETTING AND METHODS: The sample consisted of 2985 randomly selected subjects, 35-65 years old, resident in the Ragama Medical Officer of Health area. NAFLD was diagnosed on ultrasound criteria (presence of 2 out of 3: increased hepatic echogenicity compared to spleen or kidney, blurring of hepatic vasculature, deep attenuation of ultrasound signal), when alcohol intake was <14 units/week for males and <7 units/week for females. Anthropometric and blood pressure (BP) measurements were made; fasting blood glucose and insulin, lipid profile and serum alanine transaminase (ALT) were estimated (normal cutoff values were based on revised ATP III criteria of metabolic syndrome for Asians). RESULTS: 974 (35%) individuals had NAFLD [mean age 52.8 years (SD 7.3), 605 (62.1%) females]. On multivariate analysis, male sex, presence of acanthosis nigricans, central obesity (BMI>25kg/m2 and/or waist circumference >90cm for males, >80cm females), elevated fasting plasma glucose (>100mg/dl),Insulin resistance(HOMA-IR>1), elevated diastolic BP (>85mmHg), elevated plasma triglycerides (>150mg/dl), elevated ALT (> twice the upper limit of normal), and low high density lipoprotein cholesterol (<40mg/dl for men, <50mg/dl for women) were significantly associated with NAFLD. CONCLUSIONS: The prevalence of NAFLD among adults in this urban Sri Lankan community is as high as in western populations. NAFLD is associated with factors that constitute the metabolic syndrome
Epidemiology of non- alcoholic fatty liver disease (NAFLD) in an urban Sri Lankan population
(Sri Lanka Medical Association, 2008) Dassanayake, A.S.; Rajindrajith, S.; Kasturiratne, A.; Kalubowila, U.; de Silva, A.P.; Mizoue, T.; Makaya, M.; de Silva, H.J.
BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is increasing in the Asia-Pacific region. NAFLD can progress from simple steatosis, through steatohepatitis to advanced hepatic fibrosis, cirrhosis and hepatoma. Its prevalence in Sri Lanka is not known. Objective: To investigate community prevalence and risk factors associated with NAFLD among adults in an urban Sri Lankan population. DESIGN, SETTING AND METHODS: The sample consisted of 2985 randomly selected subjects, 35-65 years old, resident in the Ragama Medical Officer of Health area. NAFLD was diagnosed on ultrasound criteria (presence of 2 out of 3: increased hepatic echogenicity compared to spleen or kidney, blurring of hepatic vasculature, deep attenuation of ultrasound signal), and when alcohol intake was <14 units/week for males and <7 units/week for females. Anthropometric and blood pressure (BP) measurements were made; fasting blood glucose, lipid profile and serum alanine transaminase (ALT) were estimated (normal cutoff values were based on revised ATP III criteria of metabolic syndrome for Asians). RESULTS: 974(35%) individuals had NAFLD [mean age 52.8 years (SD 7.3), 605 (62.1%) females]. On multivariate analysis, central obesity (BMI>25kg/m2 and/or waist circumference >90cm for males, >80cm females), elevated fasting plasma glucose (>100mg/dl), elevated diastolic BP (>85mmHg), elevated plasma triglycerides (>150mg/dl), elevated ALT (>twice the upper limit of normal), and low high density lipoprotein cholesterol (<40mg/dl for men, <50mg/dl for women) were significantly associated with NAFLD. CONCLUSIONS: The prevalence of NAFLD among adults in this urban Sri Lankan community is as high as in western populations. NAFLD is associated with factors that constitute the metabolic syndrome.
Prevalence and risk factors for non-alcoholic fatty liver disease among adults in an urban Sri Lankan population
(Wiley-Blackwell, 2009) Dassanayake, A.S.; Kasturiratne, A.; Rajindrajith, S.; Kalubowila, U.; Chackrewarthy, S.; de Silva, A.P.; Makaya, M.; Mizoue, T.; Kato, N.; Wickremasinghe, A.R.; de Silva, H.J.
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.

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