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        The effect of diabetes and prediabetes on the prevalence, complications and mortality in nonalcoholic fatty liver disease

        Cheng Han Ng,Kai En Chan,Yip Han Chin,Rebecca Wenling Zeng,Pei Chen Tsai,Wen Hui Lim,Darren Jun Hao Tan,Chin Meng Khoo,Lay Hoon Goh,Zheng Jye Ling,Anand Kulkarni,Lung-Yi Loey Mak,Daniel Q Huang,Mark C 대한간학회 2022 Clinical and Molecular Hepatology(대한간학회지) Vol.28 No.3

        Background/Aims: Nonalcoholic fatty liver disease (NAFLD) is closely associated with diabetes. The cumulative impact of both diseases synergistically increases risk of adverse events. However, present population analysis is predominantly conducted with reference to non-NAFLD individuals and has not yet examined the impact of prediabetes. Hence, we sought to conduct a retrospective analysis on the impact of diabetic status in NAFLD patients, referencing non-diabetic NAFLD individuals. Methods: Data from the National Health and Nutrition Examination Survey 1999–2018 was used. Hepatic steatosis was defined with United States Fatty Liver Index (US-FLI) and FLI at a cut-off of 30 and 60 respectively, in absence of substantial alcohol use. A multivariate generalized linear model was used for risk ratios of binary outcomes while survival analysis was conducted with Cox regression and Fine Gray model for competing risk. Results: Of 32,234 patients, 28.92% were identified to have NAFLD. 36.04%, 38.32% and 25.63% were non-diabetic, prediabetic and diabetic respectively. Diabetic NAFLD significantly increased risk of cardiovascular disease (CVD), stroke, chronic kidney disease, all-cause and CVD mortality compared to non-diabetic NAFLD. However, prediabetic NAFLD only significantly increased the risk of CVD and did not result in a higher risk of mortality. Conclusions: Given the increased risk of adverse outcomes, this study highlights the importance of regular diabetes screening in NAFLD and adoption of prompt lifestyle modifications to reduce disease progression. Facing high cardiovascular burden, prediabetic and diabetic NAFLD individuals can benefit from early cardiovascular referrals to reduce risk of CVD events and mortality.

      • KCI등재

        Global incidence and prevalence of nonalcoholic fatty liver disease

        Margaret LP Teng,Cheng Han Ng,Daniel Q. Huang,Kai En Chan,Darren JH Tan,Wen Hui Lim,Ju Dong Yang,Eunice Tan,Mark D. Muthiah 대한간학회 2023 Clinical and Molecular Hepatology(대한간학회지) Vol.29 No.-

        Nonalcoholic fatty liver disease (NAFLD) is a leading cause of liver disease worldwide. The estimated global incidence of NAFLD is 47 cases per 1,000 population and is higher among males than females. The estimated global prevalence of NAFLD among adults is 32% and is higher among males (40%) compared to females (26%). The global prevalence of NAFLD has increased over time, from 26% in studies from 2005 or earlier to 38% in studies from 2016 or beyond. The prevalence of NAFLD varies substantially by world region, contributed by differing rates of obesity, and genetic and socioeconomic factors. The prevalence of NAFLD exceeds 40% in the Americas and South-East Asia. The prevalence of NAFLD is projected to increase significantly in multiple world regions by 2030 if current trends are left unchecked. In this review, we discuss trends in the global incidence and prevalence of NAFLD and discuss future projections.

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        Production and Purification of the Phosphoprotein of Nipah Virus in Escherichia coli for Use in Diagnostic Assays

        Shamala Salvamani,Beng Ti Tey,Wen Cheng Ng,Wen Siang Tan 한국생물공학회 2011 Biotechnology and Bioprocess Engineering Vol.16 No.6

        Nipah Virus (NiV) is an emerging zoonotic paramyxovirus that can be fatal in humans and various types of animals. The phospho (P) protein of NiV plays an important role in RNA synthesis, replication, and genome synthesis. In this study, the NiV P gene was cloned into a pTrcHis2-TOPO vector and the recombinant protein containing a His-tag was produced in Escherichia coli. SDSPAGE and Western blot analysis using the anti-His antibody confirmed the protein expression. An optimization study of E. coli fermentation showed that the optimal cultivation temperature was 37℃, while the optimal induction time for P protein expression was at 9 h with 1 mM IPTG. Solubility analysis showed that E. coli cultivated at 37℃produced the highest fraction (70%) of soluble P protein. The recombinant P protein was purified from clarified E. coli lysate using an immobilized metal affinity chromatography (IMAC) technique to a purity of 92.67%, with a purification factor of 11.58. The purified P protein strongly reacted with the anti-NiV swine sera collected during a NiV outbreak, suggesting its potential as a diagnostic reagent.

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