Publications by authors named "Nelson M S Wat"

Background: Adipose tissue inflammation and dysregulated adipokine secretion are implicated in obesity-related insulin resistance and type 2 diabetes. We evaluated the use of serum adiponectin, an anti-inflammatory adipokine, and several proinflammatory adipokines, as biomarkers of diabetes risk and whether they add to traditional risk factors in diabetes prediction.

Methods: We studied 1300 non-diabetic subjects from the prospective Hong Kong Cardiovascular Risk Factor Prevalence Study (CRISPS).

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Context: The KCNJ11 E23K variant is associated with type 2 diabetes mellitus (T2DM) in cross-sectional studies, but conflicting findings have been reported from prospective studies.

Objective: This study aimed to evaluate whether the E23K variant could predict glycaemic progression in a Southern Chinese population.

Methods/principal Findings: We performed a long-term prospective study on 1912 subjects from the Hong Kong Cardiovascular Risk Factors Prevalence Study (CRISPS).

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Objectives: Pigment epithelium-derived factor (PEDF) is secreted from the adipose tissue. It circulates at high concentrations, and was reported to play a causal role in obesity-induced insulin resistance and metabolic dysfunctions in mice. Previous cross-sectional studies also demonstrated plasma PEDF concentration correlated positively with systolic blood pressure (BP) and pulse pressure, and inversely with small artery elasticity.

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Objective: To investigate whether circulating levels of fibroblast growth factor 21 (FGF21), which previously has been shown to be elevated in obesity, could predict the development of type 2 diabetes in a 5.4-year, population-based, prospective study.

Research Design And Methods: Baseline plasma FGF21 levels were measured using an enzyme-linked immunosorbent assay in 1,900 subjects from the Hong Kong Cardiovascular Risk Factor Prevalence Study (CRISPS).

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Baseline haemoglobin A1c had a higher standardized hazard ratio, and more optimal sensitivity and specificity than fasting glucose in predicting the 8-year incidence of diabetes among 530 non-diabetic Chinese from the population-based Hong Kong Cardiovascular Risk Factor Prevalence Study.

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Objective: Central obesity predisposes to various cardiometabolic diseases and is a key component of the metabolic syndrome (MetS). We have previously demonstrated that three obesity-susceptible single nucleotide polymorphisms (SNPs), rs10938397 (GNPDA2), rs8050136 (FTO) and rs17782313 (MC4R), were associated with obesity and waist circumference in cross-sectional studies in the Chinese population. In this study, we investigate whether these SNPs could also predict the persistence of central obesity and MetS in subjects from the Hong Kong Cardiovascular Risk Factors Prevalence Study (CRISPS) cohort.

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Objective: Pigment epithelium-derived factor (PEDF), a serine protease inhibitor, is secreted from the adipose tissue and circulates at high concentrations. A recent study found that PEDF played a causal role in obesity-induced insulin resistance and metabolic dysfunctions in mice. Here we investigated whether circulating PEDF levels predicted the development of the metabolic syndrome (MetS) in a 10-yr prospective study.

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Context: Recent large-scale genome-wide association studies identified novel genetic variants associated with obesity and body mass index (BMI) in addition to the well-described FTO and MC4R genetic variants.

Objective: This study aimed to examine 13 previously reported obesity and/or BMI-associated loci for associations with obesity in Chinese.

Design And Study Participants: This was a cross-sectional case-control study in 470 obese cases (BMI > or =27.

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Objective: To investigate the relationships of serum adipocyte fatty acid-binding protein (A-FABP) and epidermal fatty acid-binding protein (E-FABP) with renal dysfunction and macrovascular complications in type 2 diabetic patients.

Research Design And Methods: The associations of serum A-FABP and E-FABP with markers of renal function, nephropathy staging, and macrovascular complications were examined in 237 type 2 diabetic patients.

Results: Serum A-FABP and E-FABP correlated significantly with serum creatinine, mean albumin excretion rate, and glomerular filtration rate (all P < 0.

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Objectives: High-density lipoprotein (HDL) cholesterol is a powerful cardiovascular risk factor. Important gender and ethnic differences in plasma HDL levels exist and warrant investigation.

Design: Cross-sectional survey in two different general populations.

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Background: Alkaline phosphatase (ALP) is a biomarker for hepatobiliary and skeletal diseases. It is also raised in sepsis. In atherosclerotic plaques, ALP is expressed.

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Aims: Epidermal fatty-acid-binding protein (E-FABP) is highly homologous to adipocyte FABP (A-FABP), which mediates obesity-related metabolic syndrome (MetS), diabetes and atherosclerosis in animals. Combined deficiency of E-FABP and A-FABP protects against the MetS and atherosclerosis in mice. This study investigated the association of serum E-FABP with cardio-metabolic risk factors and carotid atherosclerosis in humans.

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Objective: To investigate the association between raised blood pressure and dysglycemia.

Research Design And Methods: We studied the association between raised blood pressure and dysglycemia in 1,862 subjects in the Hong Kong Cardiovascular Risk Factor Prevalence Study cohort. We determined the factors predicting the development of diabetes and hypertension in 1,496 subjects who did not have either condition at baseline.

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Purpose: This study aimed to examine the trends in prevalence, treatment, and control of diagnosed diabetes in United States adults 20 years of age or older.

Methods: Data from the National Health and Nutrition Examination Survey 1999-2004 were used. Glycemic, blood pressure, and total cholesterol target levels were defined as having glycosylated hemoglobin <7.

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Background: The metabolic syndrome is a predictor of diabetes and coronary events. We hypothesized that it also predicts hypertension.

Methods: A total of 1,944 subjects (901 men and 1,043 women; age 46 +/- 12 years) from the Hong Kong Cardiovascular Risk Factor Prevalence Survey were recruited in 1995-1996 and restudied in 2000-2004.

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Objective: To investigate which of the components of the metabolic syndrome best predict its development.

Design: Long-term cohort of randomly selected adults.

Patients: One thousand five hundred and forty-eight subjects from the Hong Kong Cardiovascular Risk Factor Prevalence Study who did not have the metabolic syndrome by the US National Cholesterol Education Program (NCEP) or International Diabetes Federation (IDF) criteria at baseline.

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Control of glycemia and other risk factors in people with diabetes has a critical bearing on clinical outcome. Using data from the US National Health and Nutrition Examination Survey 1999-2002, the authors compared the characteristics and control among diabetic subjects in different antidiabetic treatment groups. Among diagnosed diabetic subjects (n=827), 18.

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Objective: Adipocyte fatty acid-binding protein (A-FABP) is abundantly expressed in adipocytes and plays a role in glucose homeostasis in experimental animals. We have previously shown that circulating A-FABP levels are associated with the metabolic syndrome, which confers an increased risk of type 2 diabetes. Here we investigated whether serum A-FABP levels could predict the development of diabetes in a 10-year prospective study.

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Low circulating levels of adiponectin, an adipokine with insulin-sensitizing, antiatherogenic, and anti-inflammatory properties, are found in hypertensive patients. Adiponectin replenishment ameliorated hypertension in adiponectin-deficient mice or obese, hypertensive mice with hypoadiponectinemia, suggesting an etiologic role of adiponectin in hypertension. We aimed to determine, in this 5-year prospective study, whether hypoadiponectinemia could predict the development of hypertension in a nondiabetic Chinese cohort.

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Background: Adipocyte-fatty acid binding protein (A-FABP), a major cytoplasmic protein in adipocytes, plays a central role in the development of diabetes and atherosclerotic cardiovascular disease in experimental animals. We have previously shown that A-FABP is present in the bloodstream and that its circulating levels correlate with metabolic risk factors in a cross-sectional study. In the present study, we further evaluated the prospective association of A-FABP with the metabolic syndrome (MetS) as defined by the updated National Cholesterol Education Program criteria.

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Objective: The metabolic syndrome has been associated with increased mortality in some Caucasian populations, but data in Asian populations are not available. We present data describing the association of the metabolic syndrome with mortality.

Methods: The impact of the US National Cholesterol Education Program Adult Treatment Panel III (NCEP ATP III) metabolic syndrome guidelines definition (using Asian central obesity criteria) on mortality was examined using Cox regression analyses in a population-based cohort (n = 2863) of Chinese subjects.

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Objective: We investigated the association of the metabolic syndrome with new-onset diabetes in the Hong Kong Cardiovascular Risk Factor Prevalence Study cohort.

Research Design And Methods: We followed up on 1,679 subjects without diabetes at baseline. Those with a previous diagnosis of diabetes or those who were receiving drug treatment were considered to be diabetic.

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Objective: Human resistin gene (RETN) polymorphisms have been found to be associated with type 2 diabetes (T2DM), insulin resistance and/or obesity. We evaluated, in a 5-year prospective study, whether RETN polymorphisms could predict the progression of glycaemia in southern Chinese.

Design And Patients: We conducted a systematic search for variants in RETN in 70 southern Chinese subjects.

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Background: Lipocalin-2, a 25-kDa secreted glycoprotein, is a useful biomarker for early detection of various renal injuries. Because lipocalin-2 is abundantly expressed in adipose tissue and liver, we investigated its relevance to obesity-related pathologies.

Methods: We used real-time PCR and in-house immunoassays to quantify the mRNA and serum concentrations of lipocalin-2 in C57BL/KsJ db/db obese mice and their age- and sex-matched lean littermates.

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Subjects with impaired glucose tolerance (IGT) have a high risk of developing type 2 diabetes mellitus (DM) and its related complications. However, both environmental and genetic factors may influence the progression or regression of hyperglycemia. Polymorphisms of the endothelial nitric oxide synthase (eNOS) gene have been associated with DM in cross-sectional studies, but their predictive values in glycemic progression are not known.

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