70 results on '"Nicholas W. S. Chew"'
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2. Gut‐liver axis: Potential mechanisms of action of food‐derived extracellular vesicles
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Sitong Zhang, Qiyue Wang, Daniel En Liang Tan, Vritika Sikka, Cheng Han Ng, Yan Xian, Dan Li, Mark Muthiah, Nicholas W. S. Chew, Gert Storm, Lingjun Tong, and Jiong‐Wei Wang
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food‐derived extracellular vesicles ,gut barrier ,gut microbiota ,gut‐liver axis ,metabolic disease ,milk‐derived extracellular vesicles ,Cytology ,QH573-671 - Abstract
Abstract Food‐derived extracellular vesicles (FEVs) are nanoscale membrane vesicles obtained from dietary materials such as breast milk, plants and probiotics. Distinct from other EVs, FEVs can survive the harsh degrading conditions in the gastrointestinal tract and reach the intestines. This unique feature allows FEVs to be promising prebiotics in health and oral nanomedicine for gut disorders, such as inflammatory bowel disease. Interestingly, therapeutic effects of FEVs have recently also been observed in non‐gastrointestinal diseases. However, the mechanisms remain unclear or even mysterious. It is speculated that orally administered FEVs could enter the bloodstream, reach remote organs, and thus exert therapeutic effects therein. However, emerging evidence suggests that the amount of FEVs reaching organs beyond the gastrointestinal tract is marginal and may be insufficient to account for the significant therapeutic effects achieved regarding diseases involving remote organs such as the liver. Thus, we herein propose that FEVs primarily act locally in the intestine by modulating intestinal microenvironments such as barrier integrity and microbiota, thereby eliciting therapeutic impact remotely on the liver in non‐gastrointestinal diseases via the gut‐liver axis. Likewise, drugs delivered to the gastrointestinal system through FEVs may act via the gut‐liver axis. As the liver is the main metabolic hub, the intestinal microenvironment may be implicated in other metabolic diseases. In fact, many patients with non‐alcoholic fatty liver disease, obesity, diabetes and cardiovascular disease suffer from a leaky gut and dysbiosis. In this review, we provide an overview of the recent progress in FEVs and discuss their biomedical applications as therapeutic agents and drug delivery systems, highlighting the pivotal role of the gut‐liver axis in the mechanisms of action of FEVs for the treatment of gut disorders and metabolic diseases.
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- 2024
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3. Adding Hyponatremia to the 'Rule-of-6' Prediction Tool Improves Performance in Identifying Hospitalised Patients with COVID-19 at Risk of Adverse Clinical Outcomes
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Meng Ying Sim, Jinghao Nicholas Ngiam, Matthew Chung Yi Koh, Wilson Goh, Srishti Chhabra, Nicholas W. S. Chew, Louis Yi Ann Chai, Paul Anantharajah Tambyah, and Ching-Hui Sia
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COVID-19 ,hyponatremia ,predict ,outcomes ,Singapore ,Medicine - Abstract
The ‘rule-of-6’ prediction tool was shown to be able to identify COVID-19 patients at risk of adverse outcomes. During the pandemic, we frequently observed hyponatremia at presentation. We sought to evaluate if adding hyponatremia at presentation could improve the ‘rule-of-6’ prediction tool. We retrospectively analysed 1781 consecutive patients admitted to a single tertiary academic institution in Singapore with COVID-19 infection from February 2020 to October 2021. A total of 161 (9.0%) patients had hyponatremia. These patients were significantly older, with more co-morbidities and more likely to be admitted during the Delta wave (2021). They were more likely to have radiographic evidence of pneumonia (46.0% versus 13.0%, p < 0.001) and more adverse outcomes (25.5% vs. 4.1%, p < 0.001). Hyponatremia remained independently associated with adverse outcomes after adjusting for age, lack of medical co-morbidities, vaccination status, year of admission, CRP, LDH, and ferritin. The optimised cut-off for serum sodium in predicting adverse outcomes was approximately
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- 2024
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4. Public acceptance of using artificial intelligence-assisted weight management apps in high-income southeast Asian adults with overweight and obesity: a cross-sectional study
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Han Shi Jocelyn Chew, Palakorn Achananuparp, Mayank Dalakoti, Nicholas W. S. Chew, Yip Han Chin, Yujia Gao, Bok Yan Jimmy So, Asim Shabbir, Lim Ee Peng, and Kee Yuan Ngiam
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artificial intelligence ,obesity ,implementation ,acceptability ,weight management ,behavior ,Nutrition. Foods and food supply ,TX341-641 - Abstract
IntroductionWith in increase in interest to incorporate artificial intelligence (AI) into weight management programs, we aimed to examine user perceptions of AI-based mobile apps for weight management in adults with overweight and obesity.Methods280 participants were recruited between May and November 2022. Participants completed a questionnaire on sociodemographic profiles, Unified Theory of Acceptance and Use of Technology 2 (UTAUT2), and Self-Regulation of Eating Behavior Questionnaire. Structural equation modeling was performed using R. Model fit was tested using maximum-likelihood generalized unweighted least squares. Associations between influencing factors were analyzed using correlation and linear regression.Results271 participant responses were analyzed, representing participants with a mean age of 31.56 ± 10.75 years, median (interquartile range) BMI, and waist circumference of 27.2 kg/m2 (24.2–28.4 kg/m2) and 86.4 (80.0–94.0) cm, respectively. In total, 188 (69.4%) participants intended to use AI-assisted weight loss apps. UTAUT2 explained 63.3% of the variance in our intention of the sample to use AI-assisted weight management apps with satisfactory model fit: CMIN/df = 1.932, GFI = 0.966, AGFI = 0.954, NFI = 0.909, CFI = 0.954, RMSEA = 0.059, SRMR = 0.050. Only performance expectancy, hedonic motivation, and the habit of using AI-assisted apps were significant predictors of intention. Comparison with existing literature revealed vast variabilities in the determinants of AI- and non-AI weight loss app acceptability in adults with and without overweight and obesity. UTAUT2 produced a good fit in explaining the acceptability of AI-assisted apps among a multi-ethnic, developed, southeast Asian sample with overweight and obesity.ConclusionUTAUT2 model is recommended to guide the development of AI-assisted weight management apps among people with overweight and obesity.
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- 2024
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5. Immune Activation Mediates the Association of Advanced Hepatic Fibrosis With Adverse Outcomes in Patients With Coronary Artery Disease
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Vardhmaan Jain, Anurag Mehta, Terence B. Lee, Chang Liu, Nicholas W. S. Chew, Yi‐An Ko, Matthew E. Gold, Daniel A. Gold, Nishant Vatsa, Shivang R. Desai, Jonathan H. Kim, Alireza Rahbar, Yazan Haroun, Kiran Ejaz, Salim S. Hayek, Mohammad S. Siddiqui, Fadi N. Salloum, Laurence S. Sperling, Arun J. Sanyal, and Arshed A. Quyyumi
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advanced hepatic fibrosis ,coronary artery disease ,hsCRP ,immune activation ,suPAR ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background Literature suggests a bidirectional association between advanced hepatic fibrosis (AHF) and coronary artery disease (CAD). We evaluated the association of AHF with immune activation, systemic inflammation, and adverse outcomes in patients with CAD. Methods and Results A fibrosis‐4 index cutoff value ≥2.67 was used to define AHF. Circulating levels of soluble urokinase plasminogen activator receptor and hsCRP (high‐sensitivity C‐reactive protein) were measured as markers for immune activation and systemic inflammation, respectively. The relationship of AHF with soluble urokinase plasminogen activator receptor, hsCRP, and adverse cardiovascular outcomes was evaluated. Among 3406 participants with CAD, 479 had AHF. Participants with AHF were older; were less likely to be Black individuals; and had a lower body mass index, worse renal function, and a prior history of heart failure. In multivariable linear regression models adjusted for clinical and demographic confounders, participants with AHF had 15.6% higher soluble urokinase plasminogen activator receptor and 24.0% higher hsCRP levels. They were more likely to experience the following adverse outcomes: all‐cause death (adjusted hazard ratio [HR], 1.57 ([95% CI, 1.29–1.92]; P
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- 2023
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6. Cardiovascular Health Metrics Differ Between Individuals With and Without Cancer
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Ofer Kobo, Dmitry Abramov, Manuela Fiuza, Nicholas W. S. Chew, Cheng Han Ng, Purvi Parwani, Miguel Nobre Menezes, Paaladinesh Thavendiranathan, and Mamas A. Mamas
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cancer ,cardiovascular disease ,health metrics ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background Although individuals with cancer experience high rates of cardiovascular morbidity, there are limited data on the potential differences in cardiovascular health (CVH) metrics between individuals with and without cancer. Methods and Results The National Health and Nutrition Examination Survey between 2015 and 2020 was queried to evaluate the prevalence of health metrics that comprise the American Heart Association Life's Essential 8 construct of cardiovascular health among adult individuals with and without cancer in the United States. Health metric scores were also evaluated according to important patient demographics including age, sex, race and ethnicity, and socioeconomic status. Among 4370 participants representing >180 million US adults, 9.4% had a history of cancer. Individuals with cancer had lower overall cardiovascular health scores (67.1 versus 69.1, P
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- 2023
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7. Impact of the COVID‐19 Pandemic on Diabetes‐Related Cardiovascular Mortality in the United States
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Hussein Bashar, Ofer Kobo, Kamlesh Khunti, Louise Y. Sun, Martin K. Rutter, Nicholas W. S. Chew, Nick Curzen, and Mamas A. Mamas
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cardiovascular mortality ,COVID‐19 ,diabetes ,ischemic heart disease ,racial disparities ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background In the past few decades, diabetes‐related cardiovascular mortality has been steadily declining. However, the impact of the COVID19 pandemic on this trend has not been previously defined. Methods and Results Diabetes‐related cardiovascular mortality data were extracted for each year between 1999 and 2020 from the Centers for Disease Control and Prevention Wide‐Ranging Online Data for Epidemiologic Research (WONDER) database. Regression analysis was used to calculate the trend in the 2 decades before the pandemic (1999–2019) and thereby estimate the excess cardiovascular mortality in 2020. There was a 29.2% fall in the diabetes‐related cardiovascular age‐adjusted mortality rate between 1999 to 2019, largely driven by a 41% decrease in ischemic heart disease deaths. In comparison to 2019, there was an overall 15.5% increase in the diabetes‐related cardiovascular age‐adjusted mortality rate in the first year of the pandemic, mainly due to a 14.1% rise in ischemic heart disease deaths. Younger patients (under 55 years) and the Black population experienced the greatest increase in diabetes‐related cardiovascular age‐adjusted mortality rate (24.0% and 25.3%, respectively). Trend analysis estimated 16 009 excess diabetes‐related cardiovascular deaths in 2020, with the majority due to ischemic heart disease (8504). Black and Hispanic or Latino populations had at least one‐fifth of their 2020 diabetes‐related cardiovascular age‐adjusted mortality rate as excess deaths (22.3% and 20.2%, respectively). Conclusions There was a sharp rise in diabetes‐related cardiovascular mortality during the first pandemic year. Black, Hispanic or Latino, and young people showed the largest increases in diabetes‐related cardiovascular mortality. Targeted health policies could help address the disparities observed in this analysis.
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- 2023
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8. Editorial: The heart of NAFLD
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Nicholas W. S. Chew, Shankar Kannan, Bryan Chong, Yiphan Chin, and Mark Muthiah
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non-alcoholic fatty liver disease ,cardiovascular disease ,coronary artery disease ,heart failure ,hyperlipidemia ,diabetes ,Medicine (General) ,R5-920 - Published
- 2023
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9. General Public’s knowledge, awareness, and perception of Cardiometabolic diseases: data from a Singapore study population
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Vickram Vijay Anand, Rachel Sze Jen Goh, Benjamin Nah, Sky Wei Chee Koh, Jieyu Lim, Nicholas W. S. Neo, Jocelyn Chew, Yuan Ying Lee, Yip Han Chin, Bryan Chong, Gwyneth Kong, Bryan Tan, Zhiwen Low, Chin Meng Khoo, Lay Hoon Goh, Poay Huan Loh, Ping Chai, Mayank Dalakoti, Mark Chan, Roger Foo, Mark Muthiah, and Nicholas W. S. Chew
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knowledge ,awareness ,perception ,actions ,cardiometabolic disease ,risk factors ,Medicine (General) ,R5-920 - Abstract
BackgroundHealth literacy and illness perception play crucial roles in tackling the cardiometabolic disease epidemic. We aim to compare the attitudes, knowledge, self-perceived risks and actions taken, between individuals with and without metabolic risk factors (MFs).MethodsFrom 5 June to 5 October 2022, participants of the general public were invited to complete a self-administered questionnaire. MF status was defined as the presence of hypertension, hyperlipidemia, diabetes mellitus and/or current/previous smoking. Participants were assessed based on four categories (knowledge-based, attitude-based, perceived risk, and action-based) of questions pertaining to four cardiometabolic diseases – diabetes mellitus, hypertension, hyperlipidemia, and non-alcoholic fatty liver disease.ResultsA total of 345 participants were enrolled, of whom 34.5% had at least one MF. Compared to those without MFs, participants with MFs had lower knowledge scores, but higher perceived risk scores across all cardiometabolic diseases. The largest knowledge gap pertained to hypertension-related questions. After adjustment, linear regression demonstrated that the presence of MFs (β:2.752, 95%CI: 0.772–4.733, p = 0.007) and higher knowledge scores (β:0.418, 95%CI: 0.236–0.600, p
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- 2023
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10. Utility of conventional clinical risk scores in a low-risk COVID-19 cohort
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Jinghao Nicholas Ngiam, Nicholas W. S. Chew, Sai Meng Tham, Zhen Yu Lim, Tony Y. W. Li, Shuyun Cen, Paul Anantharajah Tambyah, Amelia Santosa, Ching-Hui Sia, and Gail Brenda Cross
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COVID-19 ,Risk score ,Outcomes ,Fever ,Singapore ,Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract Background Several specific risk scores for Coronavirus disease 2019 (COVID-19) involving clinical and biochemical parameters have been developed from higher-risk patients, in addition to validating well-established pneumonia risk scores. We compared multiple risk scores in predicting more severe disease in a cohort of young patients with few comorbid illnesses. Accurately predicting the progression of COVID-19 may guide triage and therapy. Methods We retrospectively examined 554 hospitalised COVID-19 patients in Singapore. The CURB-65 score, Pneumonia Severity Index (PSI), ISARIC 4C prognostic score (4C), CHA2DS2-VASc score, COVID-GRAM Critical Illness risk score (COVID-GRAM), Veterans Health Administration COVID-19 index for COVID-19 Mortality (VACO), and the “rule-of-6” score were compared for three performance characteristics: the need for supplemental oxygen, intensive care admission and mechanical ventilation. Results A majority of patients were young (≤ 40 years, n = 372, 67.1%). 57 (10.3%) developed pneumonia, with 16 (2.9% of study population) requiring supplemental oxygen. 19 patients (3.4%) required intensive care and 2 patients (0.5%) died. The clinical risk scores predicted patients who required supplemental oxygenation and intensive care well. Adding the presence of fever to the CHA2DS2-VASc score and 4C score improved the ability to predict patients who required supplemental oxygen (c-statistic 0.81, 95% CI 0.68–0.94; and 0.84, 95% CI 0.75–0.94 respectively). Conclusion Simple scores including well established pneumonia risk scores can help predict progression of COVID-19. Adding the presence of fever as a parameter to the CHA2DS2-VASc or the 4C score improved the performance of these scores in a young population with few comorbidities.
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- 2021
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11. Depression in non-alcoholic fatty liver disease is associated with an increased risk of complications and mortality
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Cheng Han Ng, Jieling Xiao, Nicholas W. S. Chew, Yip Han Chin, Kai En Chan, Jingxuan Quek, Wen Hui Lim, Darren Jun Hao Tan, Ryan Wai Keong Loke, Caitlyn Tan, Ansel Shao Pin Tang, Xin Lei Goh, Benjamin Nah, Nicholas Syn, Dan Yock Young, Nobuharu Tamaki, Daniel Q. Huang, Mohammad Shadab Siddiqui, Mazen Noureddin, Arun Sanyal, and Mark Muthiah
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depression ,NAFLD ,NASH ,NHANES ,complication ,mortality ,Medicine (General) ,R5-920 - Abstract
Background and aimsThe global prevalence of non-alcoholic fatty liver disease (NAFLD) is expected to rise continuously. Furthermore, emerging evidence has also shown the potential for concomitant depression in NAFLD. This study aims to examine the prevalence, risk factors, and adverse events of depression in NAFLD and evaluate whether treated depression can reverse the increased risks of adverse outcomes.Materials and methodsThis study analyses the 2000–2018 cycles of NHANES that examined liver steatosis with fatty liver index (FLI). The relationship between NAFLD and depression was assessed with a generalized linear mix model and a sensitivity analysis was conducted in the no depression, treated depression, and untreated depression groups. Survival analysis was conducted with cox regression and fine gray sub-distribution model.ResultsA total of 21,414 patients were included and 6,726 were diagnosed with NAFLD. The risk of depression in NAFLD was 12% higher compared to non-NAFLD individuals (RR: 1.12, CI: 1.00–1.26, p = 0.04). NAFLD individuals with depression were more likely to be older, females, Hispanics or Caucasians, diabetic, and have higher BMI. Individuals with depression have high risk for cardiovascular diseases (CVD) (RR: 1.40, CI: 1.25–1.58, p < 0.01), stroke (RR: 1.71, CI: 1.27–2.23, p < 0.01), all-cause mortality (HR: 1.50, CI: 1.25–1.81, p < 0.01), and cancer-related mortality (SHR: 1.43, CI: 1.14–1.80, p = 0.002) compared to NAFLD individuals without depression. The risk of CVD, stroke, all-cause mortality, and cancer-related mortality in NAFLD individuals with treated depression and depression with untreated treatment was higher compared to individuals without depression.ConclusionThis study shows that concomitant depression in NAFLD patients can increase the risk of adverse outcomes. Early screening of depression in high-risk individuals should be encouraged to improve the wellbeing of NAFLD patients.
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- 2022
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12. A poor perspective of self weight significantly increases adverse outcomes in non-alcoholic fatty liver disease (NAFLD)
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Clarissa Elysia Fu, Cheng Han Ng, Nicholas W. S. Chew, Zane En Qi Heng, Yip Han Chin, Jingxuan Quek, Wen Hui Lim, Jieling Xiao, Kai En Chan, Darren Jun Hao Tan, Caitlyn Tan, Sitong Zhang, Teng Kiat Koh, Benjamin Nah, Yock Young Dan, Nicholas Syn, Mohammad Shadab Siddiqui, Arun J. Sanyal, Mazen Noureddin, and Mark Muthiah
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weight perception ,NAFLD ,non-alcoholic fatty liver disease ,NAFLD outcomes ,mortality ,Medicine (General) ,R5-920 - Abstract
BackgroundNon-alcoholic fatty liver disease (NAFLD) is prevalent amongst overweight and obese individuals, and weight loss remains the main mode of treatment for NAFLD patients. Weight perception plays a key role in the efficacy of such treatment. The current study aims to investigate the prevalence, associating factors and implications of poor weight perception amongst such individuals.MethodsAn analysis was done on data collected from NHANES between 1999 and 2018. Comparison was made between NAFLD individuals with and without poor weight perception in terms of prevalence, associated characteristics, and clinical outcomes. Multivariate analysis was used to compare effect size of adverse events associated with NAFLD individuals with poor weight perception.ResultsOf the 12,170 NAFLD patients, 19.2% (CI: 18.5 to 19.9%) had poor weight perception. Poor weight perception was significantly associated with lower education levels, reduced levels of exercise and unhealthier lipid profiles. There was an increased risk in all-cause mortality (HR: 1.18, CI: 1.00 to 1.38, p = 0.047), cardiovascular disease mortality (SHR: 1.33, CI: 1.03 to 1.71, p = 0.026), major adverse cardiovascular events (OR: 1.21 CI: 1.10 to 1.32, p < 0.001), and advanced fibrosis (OR: 1.30, CI: 1.03 to 1.64, p = 0.025) for individuals with poor weight perception.ConclusionThis study highlights the positive association between appropriate weight perception and better outcomes in individuals with NAFLD. Poor weight perception increased the risk of adverse events and decreased inclination toward seeking weight loss treatment. Greater emphasis should be placed on dealing with weight perception in individuals with NAFLD for better treatment outcomes.
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- 2022
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13. Hypertension is prevalent in non-alcoholic fatty liver disease and increases all-cause and cardiovascular mortality
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Cheng Han Ng, Zhen Yu Wong, Nicholas W. S. Chew, Kai En Chan, Jieling Xiao, Nilofer Sayed, Wen Hui Lim, Darren Jun Hao Tan, Ryan Wai Keong Loke, Phoebe Wen Lin Tay, Jie Ning Yong, Gywneth Kong, Daniel Q. Huang, Jiong-Wei Wang, Mark Chan, Mayank Dalakoti, Nobuharu Tamaki, Mazen Noureddin, Mohammad Shadab Siddiqui, Arun J. Sanyal, and Mark Muthiah
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non-alcoholic fatty liver (NAFL) ,controlled hypertension ,uncontrolled hypertension ,mortality ,cardiovascular ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background and aimsHypertension (HTN) is a common comorbidity in non-alcoholic fatty liver disease (NAFLD) affecting up to 40% of individuals. However, the impact of HTN and its control on outcomes in NAFLD remains unclear. Therefore, we aimed to examine the impact of HTN on survival outcomes in a longitudinal cohort of NAFLD patients.MethodsThe analysis consisted of adults in the National Health and Nutrition Examination Survey (NHANES) from 1999 to 2018 with data on socio-demographic characteristics and comorbidities. NAFLD was diagnosed with fatty liver index (FLI) and United States-FLI at a cut-off of 60 and 30, respectively in the substantial absence of alcohol use. A multivariate regression analysis was conducted to adjust for confounders.ResultsA total of 45,302 adults were included, and 27.83% were identified to have NAFLD. Overall, 45.65 and 35.12% of patients with NAFLD had HTN and uncontrolled HTN, respectively. A multivariate analysis with confounders demonstrated that hypertensive NAFLD had a significantly increased risk of all-cause mortality (HR: 1.39, CI: 1.14–1.68, p < 0.01) and cardiovascular disease (CVD) mortality (HR: 1.85, CI: 1.06–3.21, p = 0.03). Untreated HTN remained to have a significantly increased risk in all-cause (HR: 1.59, CI: 1.28–1.96, p < 0.01) and CVD mortality (HR: 2.36, CI: 1.36–4.10, p < 0.01) while treated HTN had a non-significant increased risk of CVD mortality (HR: 1.51, CI: 0.87–2.63, p = 0.14) and a lower magnitude of increase in the risk of all-cause mortality (HR: 1.26, CI: 1.03–1.55, p = 0.03).ConclusionDespite the significant burden of HTN in NAFLD, up to a fifth of patients have adequate control, and the lack thereof significantly increases the mortality risk. With the significant association of HTN in NAFLD, patients with NAFLD should be managed with a multidisciplinary team to improve longitudinal outcomes.
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- 2022
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14. Effects of Plant-Based Diets on Anthropometric and Cardiometabolic Markers in Adults: An Umbrella Review
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Han Shi Jocelyn Chew, Felicia Kai Xin Heng, Si Ai Tien, Jie Yun Thian, Hui Shan Chou, Shaun Seh Ern Loong, Wei How Darryl Ang, Nicholas W. S. Chew, and Ka-Hei Kenneth Lo
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plant-based ,diet ,nutrition ,body weight gain ,cardiometabolic ,blood glucose ,Nutrition. Foods and food supply ,TX341-641 - Abstract
We conducted an umbrella review to consolidate the evidence of adopting plant-based diets on anthropometric and cardiometabolic outcomes. Six electronic databases (CINAHL, EMBASE, PubMed, Scopus, the Cochrane Library, and Web of Science) were searched for systematic reviews with meta-analysis (SRMAs) published from each journal’s inception until 1 October 2022. Effect sizes from SRMAs and primary studies were pooled separately using random effects models. Overlapping primary studies were removed for primary studies’ analyses. Seven SRMAs representing 51 primary studies were included, suggesting significant benefits of plant-based diets on weight (−2.09 kg, 95% CI: −3.56, −0.62 kg, p = 0.01, I2 = 95.6%), body mass index (−0.95 kg/m2, 95% CI: −1.26, −0.63 kg/m2, p = 0.002; I2 = 45.1%), waist circumference (−2.20 cm, 95% CI: −0.08, 0.00 cm, p = 0.04; I2 = 88.4%), fasting blood glucose (−0.11 mmol/L, 95% CI: −0.13, −0.09 mmol/L, p < 0.001, I2 = 18.2%), and low-density lipoprotein cholesterol (−0.31 mmol/L, 95% CI: −0.41, −0.20 mmol/L, p < 0.001, I2 = 65.6%). Changes in high-density lipoprotein cholesterol, triglycerides, and blood pressure were not statistically significant. Generally, plant-based diets were recommended to improve anthropometry, lipid profile, and glucose metabolism. However, findings should be interpreted with caution, because most of the reviews were rated to be of low credibility of evidence and were largely based on Western eating habits and traditions, which may limit the generalizability of findings.
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- 2023
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15. Socio-Demographic, Behavioral and Psychological Factors Associated with High BMI among Adults in a Southeast Asian Multi-Ethnic Society: A Structural Equation Model
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Han Shi Jocelyn Chew, Shaun Seh Ern Loong, Su Lin Lim, Wai San Wilson Tam, Nicholas W. S. Chew, Yip Han Chin, Ariana M. Chao, Georgios K. Dimitriadis, Yujia Gao, Bok Yan Jimmy So, and Asim Shabbir
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obesity ,overweight ,sociodemographic ,body weight determinants ,weight loss ,weight management ,Nutrition. Foods and food supply ,TX341-641 - Abstract
While various influencing factors of overweight and obesity have been identified, the underlying mechanism remains unclear. We examined the relationships among sociodemographic, behavioral, and psychological factors on anthropometry in a multi-ethnic population with overweight and obesity. Participants (N = 251) were recruited from January to October 2022. Mean age and self-reported BMI were 31.7 ± 10.1 years and 29.2 ± 7.2 kg/m2. Participants were mostly female (52.4%) and overweight (58.2%). Multivariate multiple regression was performed using maximum likelihood estimation. Body mass index was associated with waist circumference, age, sex, race, marital status, education level, residential region, overeating habit, immediate thinking, self-regulation, and physical activity, but not anxiety, depression, or the intention to change eating habits. Final model indicated good fit: χ2 (30, N = 250) = 33.5, p = 0.32, CFI = 0.993, TLI = 0.988, RMSEA = 0.022, and SRMR = 0.041. Direct effects were found between BMI and overeating (β = 0.10, p = 0.004), race (β = −0.82, p < 0.001), marital status (β = −0.42, p = 0.001), and education level (β = −0.28, p = 0.019). Crisps (68.8%), cake (66.8%) and chocolate (65.6%) were identified as the most tempting foods. Immediate thinking indirectly increased overeating habits through poor self-regulation, although sociodemographic characteristics better predicted anthropometry than psycho-behavioral constructs.
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- 2023
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16. Coronary Artery Bypass Grafting Versus Percutaneous Coronary Intervention for Multivessel Coronary Artery Disease: A One-Stage Meta-Analysis
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Nicholas W. S. Chew, Jin Hean Koh, Cheng Han Ng, Darren Jun Hao Tan, Jie Ning Yong, Chaoxing Lin, Oliver Zi-Hern Lim, Yip Han Chin, Denzel Ming Wei Lim, Koo Hui Chan, Poay-Huan Loh, Adrian Low, Chi-Hang Lee, Huay-Cheem Tan, and Mark Chan
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multivessel coronary artery disease (MVD) ,coronary artery bypass grafting (CABG) ,percutaneous coronary intervention ,mortality ,coronary artery ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background and AimsData are emerging on 10-year mortality comparing coronary artery bypass grafting (CABG) and percutaneous coronary intervention (PCI) with stenting for multivessel disease (MVD) without left main (LM) involvement. We conducted an updated two-stage meta-analysis using reconstructed individual patient data to compare long-term mortality between CABG and PCI for patients with MVD without significant LM coronary disease.MethodsMedline and Embase databases were searched for articles comparing CABG with PCI for MVD. A two-stage meta-analysis was conducted using reconstructed patient level survival data for all-cause mortality with subgroups by SYNTAX score. The shared-frailty and stratified Cox models were fitted to compare survival endpoints.ResultsWe screened 1,496 studies and included six randomized controlled trials with 7,181 patients. PCI was associated with greater 10-year all-cause mortality risk (HR: 1.282, CI: 1.118–1.469, p < 0.001) compared with CABG. In patients with low SYNTAX score, 10-year all-cause mortality after PCI was comparable to CABG (HR: 1.102, 0.822–1.479, p = 0.516). However, in patients with moderate to high SYNTAX score, 10-year all-cause mortality was significantly higher after PCI compared with CABG (HR: 1.444, 1.122–1.858, p < 0.001; HR: 1.856, 1.380–2.497, p < 0.001, respectively).ConclusionThis updated reconstructed individual patient-data meta-analysis revealed a sustained lower cumulative all-cause mortality of CABG over PCI for multivessel disease without LM involvement.
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- 2022
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17. Prognostic Outcomes in Acute Myocardial Infarction Patients Without Standard Modifiable Risk Factors: A Multiethnic Study of 8,680 Asian Patients
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Gwyneth Kong, Nicholas W. S. Chew, Cheng Han Ng, Yip Han Chin, Oliver Z. H. Lim, Anand Ambhore, Gavin Ng, William Kong, Kian-Keong Poh, Roger Foo, James Yip, Tiong-Cheng Yeo, Adrian Fatt-Hoe Low, Chi-Hang Lee, Mark Yan-Yee Chan, Huay-Cheem Tan, and Poay-Huan Loh
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hypertension ,hyperlipidemia ,diabetes ,standard modifiable cardiovascular risk factors ,prognostic outcomes ,smoking ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
BackgroundAn increasing proportion of patients with acute myocardial infarction (AMI) are presenting without standard modifiable risk factors (SMuRFs) of hypertension, hypercholesterolemia, diabetes, and smoking, but with an unexpectedly increased mortality. This study examined the SMuRF-less patients presenting with AMI in a multiethnic Asian population.MethodsWe recruited patients presenting with AMI from 2011 to 2021 and compared the prevalence, clinical characteristics, and outcomes of SMuRF-less and SMuRF patients. Multivariable analysis was used to compare the outcomes of 30-day cardiovascular mortality, all-cause mortality, readmission, cardiogenic shock, stroke, and heart failure. Kaplan–Meier curves were constructed for 30-day cardiovascular mortality, with stratification by ethnicity, gender and AMI type, and 10-year all-cause mortality.ResultsStandard modifiable risk factor-less patients, who made up 8.6% of 8,680 patients, were significantly younger with fewer comorbidities that include stroke and chronic kidney disease, but higher rates of ventricular arrhythmias and inotropic or invasive ventilation requirement. Multivariable analysis showed higher rates of cardiovascular mortality (HR 1.48, 95% CI: 1.09–1.86, p = 0.048), cardiogenic shock (RR: 1.31, 95% CI: 1.09–1.52, p = 0.015), and stroke (RR: 2.51, 95% CI: 1.67–3.34, p = 0.030) among SMuRF-less patients. A 30-day cardiovascular mortality was raised in the SMuRF-less group, with similar trends in men, patients with ST-segment elevation myocardial infarction (STEMI), and the three Asian ethnicities. All-cause mortality remains increased in the SMuRF-less group for up to 5 years.ConclusionThere is a significant proportion of patients with AMI without standard risk factors in Asia, who have worse short-term mortality. This calls for greater focus on the management of this unexpectedly high-risk subgroup of patients.
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- 2022
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18. Prevalence, Risk Factors and Intervention for Depression and Anxiety in Pulmonary Hypertension: A Systematic Review and Meta-analysis
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Aaron Shengting Mai, Oliver Zi Hern Lim, Yeung Jek Ho, Gwyneth Kong, Grace En Hui Lim, Cheng Han Ng, Cyrus Ho, Roger Ho, Yinghao Lim, Ivandito Kuntjoro, Edgar Tay, James Yip, Nicholas W. S. Chew, and Ting-Ting Low
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depression ,anxiety ,risk factors ,prevalence ,pulmonary hypertension ,interventions ,Medicine (General) ,R5-920 - Abstract
BackgroundCurrent guidelines recommend psychological support for patients with pulmonary hypertension suffering from psychological adversity. However, little is known about the prevalence and risk factors of depression and anxiety in patients with pulmonary hypertension (PH).MethodsMedline and Embase were searched from inception to 6 May 2021. Meta-analysis of proportions using the generalized linear mixed model was conducted to analyze the pooled prevalence rates of depression and anxiety in PH patients. Risk factors for depression and anxiety in PH patients were evaluated using meta regression.ResultsA total of 24 studies involving 2,161 PH patients were included. The pooled prevalence of depression in PH was 28.0% (95% CI: 20.5–36.8) and pooled prevalence of anxiety was 37.1% (95% CI: 28.7–46.4). There was a significantly higher prevalence of anxiety (p = 0.0013) amongst PH patients in Asia (61.1%) compared to Europe (40.3%) and North America (22.9%). In terms of risk factors, congenital heart disease-related pulmonary arterial hypertension (PAH-CHD) were significantly associated with both depression (OR: 1.68, 95% CI: 1.27–2.23, p = 0.024) and anxiety (OR: 1.63, 95% CI: 1.45–1.83, p = 0.002). On the other hand, chronic thromboembolic pulmonary hypertension (CTEPH, OR: 1.18, 95% CI: 1.10–1.26, p = 0.004) was significantly associated with depression, whereas worse pulmonary vascular resistance (β: 0.30, 95% CI: 0.09–0.52, p = 0.005) and cardiac index (β: −0.96, 95% CI: −1.58 to −0.35, p = 0.002) were significantly correlated with anxiety.ConclusionThe prevalence of anxiety and depression in PH patients is alarmingly high, with an increased prevalence of anxiety in Asia compared to Europe or North America. Psychological support is warranted for patients with PH, particularly those with underlying congenital heart disease, CTEPH, and severe disease.Systematic Review RegistrationCRD42021251733.
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- 2022
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19. A network meta-analysis of 12,116 individuals from randomized controlled trials in the treatment of depression after acute coronary syndrome
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Grace En Hui Lim, Ansel Tang, Yip Han Chin, Jie Ning Yong, Darren Tan, Phoebe Tay, Yu Yi Chan, Denzel Ming Wei Lim, Jun Wei Yeo, Kai En Chan, Kamala Devi, Colin Eng Choon Ong, Roger S. Y. Foo, Huay-Cheem Tan, Mark Y. Chan, Roger Ho, Poay Huan Loh, and Nicholas W. S. Chew
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Medicine ,Science - Abstract
Background Post-acute coronary syndrome (ACS) depression is a common but not well understood complication experienced by ACS patients. Research on the effectiveness of various therapies remains limited. Hence, we sought to conduct a network meta-analysis to assess the efficacy of different interventions for post-ACS depression in improving patient outcomes. Methods and findings Three electronic databases were searched for randomised controlled trials describing different depression treatment modalities in post-ACS patients. Each article was screened based on inclusion criteria and relevant data were extracted. A bivariate analysis and a network meta-analysis was performed using risk ratios (RR) and standardized mean differences (SMD) for binary and continuous outcomes, respectively. A total of 30 articles were included in our analysis. Compared to standard care, psychosocial therapy was associated with the greatest reduction in depression scores (SMD:-1.21, 95% CI: -1.81 to -0.61, pConclusion This network meta-analysis found that the treatment effect of the various psychological modalities on depression severity were similar. Future trials on psychological interventions assessing clinical outcomes and improvement in adherence to ACS-specific interventions are needed.
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- 2022
20. The Association of Plant-Based Diet With Cardiovascular Disease and Mortality: A Meta-Analysis and Systematic Review of Prospect Cohort Studies
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Jingxuan Quek, Grace Lim, Wen Hui Lim, Cheng Han Ng, Wei Zheng So, Jonathan Toh, Xin Hui Pan, Yip Han Chin, Mark D. Muthiah, Siew Pang Chan, Roger S. Y. Foo, James Yip, Nithya Neelakantan, Mary F. F. Chong, Poay Huan Loh, and Nicholas W. S. Chew
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vegetarians ,vegans ,heart disease ,cardiovascular disease ,plant-based diets ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background: The association between plant-based diets and cardiovascular disease (CVD) remains poorly characterized. Given that diet represents an important and a modifiable risk factor, this study aimed to assess (1) the relationships between the impact of adherence to plant-based diets on cardiovascular mortality, incident CVD, and stroke; (2) if associations differed by adherence to healthful and less healthful plant-based diets.Methods and Findings: MEDLINE and EMBASE databases were searched up to May 2021. Studies assessing CVD outcomes with relation to plant-based dietary patterns or according to plant-based dietary indices (PDI) were included. A meta-analysis of hazard ratios (HR) was conducted using DerSimonian and Laird random effects model. Thirteen studies involving 410,085 participants were included. Greater adherence to an overall plant-based dietary pattern was significantly associated with a lower risk of cardiovascular mortality (pooled HR: 0.92, 95% CI: 0.86–0.99 p = 0.0193, I2 = 88.5%, N = 124,501) and a lower risk of CVD incidence (pooled HR: 0.90, 95% CI: 0.82–0.98, p = 0.0173, I2 = 87.2%, N = 323,854). Among the studies that used PDI, unhealthful plant-based diets were associated with increased risk of cardiovascular mortality (pooled HR: 1.05, 95% CI: 1.01–1.09, p = 0.0123, I2 = 0.00%, N = 18,966), but not CVD incidence. Conversely, healthful plant-based diets were associated with decreased CVD incidence (pooled HR: 0.87, 95% CI: 0.80–0.95, p = 0.0011, I2 = 57.5%, N = 71,301), but not mortality. Vegetarians also had significantly lower CVD incidence (HR: 0.81, 95% CI: 0.72–0.91, p = 0.0004, I2 = 22.2%, N = 16,254), but similar CVD mortality or stroke risk when compared to the meat-eaters.Conclusion: To date, this comprehensive study examines the effects of a plant-based diet on major clinical endpoints using more holistic PDIs. These findings highlight the favorable role of healthful plant-based foods in reducing cardiovascular mortality and CVD.
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- 2021
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21. Post-ST-Segment Elevation Myocardial Infarction Follow-Up Care During the COVID-19 Pandemic and the Possible Benefit of Telemedicine: An Observational Study
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Audrey A. Y. Zhang, Nicholas W. S. Chew, Cheng Han Ng, Kailun Phua, Yin Nwe Aye, Aaron Mai, Gwyneth Kong, Kalyar Saw, Raymond C. C. Wong, William K. F. Kong, Kian-Keong Poh, Koo-Hui Chan, Adrian Fatt-Hoe Low, Chi-Hang Lee, Mark Yan-Yee Chan, Ping Chai, James Yip, Tiong-Cheng Yeo, Huay-Cheem Tan, and Poay-Huan Loh
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COVID-19 ,telemedicine ,telehealth ,ST-segment elevation myocardial infarction ,pandemic ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background: Infectious control measures during the COVID-19 pandemic have led to the propensity toward telemedicine. This study examined the impact of telemedicine during the pandemic on the long-term outcomes of ST-segment elevation myocardial infarction (STEMI) patients.Methods: This study included 288 patients admitted 1 year before the pandemic (October 2018–December 2018) and during the pandemic (January 2020–March 2020) eras, and survived their index STEMI admission. The follow-up period was 1 year. One-year primary safety endpoint was all-cause mortality. Secondary safety endpoints were cardiac readmissions for unplanned revascularisation, non-fatal myocardial infarction, heart failure, arrythmia, unstable angina. Major adverse cardiovascular events (MACE) was defined as the composite outcome of each individual safety endpoint.Results: Despite unfavorable in-hospital outcomes among patients admitted during the pandemic compared to pre-pandemic era, both groups had similar 1-year all-cause mortality (11.2 vs. 8.5%, respectively, p = 0.454) but higher cardiac-related (14.1 vs. 5.1%, p < 0.001) and heart failure readmissions in the pandemic vs. pre-pandemic groups (7.1 vs. 1.7%, p = 0.037). Follow-up was more frequently conducted via teleconsultations (1.2 vs. 0.2 per patient/year, p = 0.001), with reduction in physical consultations (2.1 vs. 2.6 per patient/year, p = 0.043), during the pandemic vs. pre-pandemic era. Majority achieved guideline-directed medical therapy (GDMT) during pandemic vs. pre-pandemic era (75.9 vs. 61.6%, p = 0.010). Multivariable Cox regression demonstrated achieving medication target doses (HR 0.387, 95% CI 0.164–0.915, p = 0.031) and GDMT (HR 0.271, 95% CI 0.134–0.548, p < 0.001) were independent predictors of lower 1-year MACE after adjustment.Conclusion: The pandemic has led to the wider application of teleconsultation, with increased adherence to GDMT, enhanced medication target dosing. Achieving GDMT was associated with favorable long-term prognosis.
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- 2021
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22. Attitudes toward COVID-19 vaccination and willingness to pay: comparison of people with and without mental disorders in China
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Fengyi Hao, Bokun Wang, Wanqiu Tan, Syeda Fabeha Husain, Roger S. McIntyre, Xiangdong Tang, Ling Zhang, Xiaofan Han, Li Jiang, Nicholas W. S. Chew, Benjamin Yong-Qiang Tan, Bach Tran, Zhisong Zhang, Gia Linh Vu, Giang Thu Vu, Roger Ho, Cyrus S. Ho, and Vijay K. Sharma
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Anxiety ,COVID-19 ,depression ,insomnia ,vaccine ,Psychiatry ,RC435-571 - Abstract
Background Acceptance and willingness to pay for the COVID-19 vaccine are unknown. Aims We compared attitudes toward COVID-19 vaccination in people suffering from depression or anxiety disorder and people without mental disorders, and their willingness to pay for it. Method Adults with depression or anxiety disorder (n = 79) and healthy controls (n = 134) living in Chongqing, China, completed a cross-sectional study between 13 and 26 January 2021. We used a validated survey to assess eight aspects related to attitudes toward the COVID-19 vaccines. Psychiatric symptoms were assessed by the 21-item Depression, Anxiety and Stress Scale. Results Seventy-six people with depression or anxiety disorder (96.2%) and 134 healthy controls (100%) reported willingness to receive the COVID-19 vaccine. A significantly higher proportion of people with depression or anxiety disorder (64.5%) were more willing to pay for the COVID-19 vaccine than healthy controls (38.1%) (P ≤ 0.001). After multivariate adjustment, severity of depression and anxiety was significantly associated with willingness to pay for COVID-19 vaccination among psychiatric patients (P = 0.048). Non-healthcare workers (P = 0.039), health insurance (P = 0.003), living with children (P = 0.006) and internalised stigma (P = 0.002) were significant factors associated with willingness to pay for COVID-19 vaccine in healthy controls. Conclusions To conclude, psychiatric patients in Chongqing, China, showed high acceptance and willingness to pay for the COVID-19 vaccine. Factors associated with willingness to pay for the COVID-19 vaccine differed between psychiatric patients and healthy controls.
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- 2021
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23. Asian-Pacific perspective on the psychological well-being of healthcare workers during the evolution of the COVID-19 pandemic
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Nicholas W. S. Chew, Jinghao Nicholas Ngiam, Benjamin Yong-Qiang Tan, Sai-Meng Tham, Celine Yan-Shan Tan, Mingxue Jing, Renarebecca Sagayanathan, Jin Tao Chen, Lily Y. H. Wong, Aftab Ahmad, Faheem Ahmed Khan, Maznah Marmin, Fadhlina Binte Hassan, Tai Mei-Ling Sharon, Chin Han Lim, Mohamad Iqbal Bin Mohaini, Rivan Danuaji, Thang H. Nguyen, Georgios Tsivgoulis, Sotirios Tsiodras, Paraskevi C. Fragkou, Dimitra Dimopoulou, Arvind K. Sharma, Kenam Shah, Bhargesh Patel, Suktara Sharma, R. N. Komalkumar, R. V. Meenakshi, Shikha Talati, Hock Luen Teoh, Cyrus S. Ho, Roger C. Ho, and Vijay K. Sharma
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COVID-19 ,healthcare workers ,psychological impact ,pandemic ,Asia-Pacific ,Psychiatry ,RC435-571 - Abstract
BackgroundThe coronavirus disease 2019 (COVID-19) pandemic has led to significant strain on front-line healthcare workers.AimsIn this multicentre study, we compared the psychological outcomes during the COVID-19 pandemic in various countries in the Asia-Pacific region and identified factors associated with adverse psychological outcomes.MethodFrom 29 April to 4 June 2020, the study recruited healthcare workers from major healthcare institutions in five countries in the Asia-Pacific region. A self-administrated survey that collected information on prior medical conditions, presence of symptoms, and scores on the Depression Anxiety Stress Scales and the Impact of Events Scale-Revised were used. The prevalence of depression, anxiety, stress and post-traumatic stress disorder (PTSD) relating to COVID-19 was compared, and multivariable logistic regression identified independent factors associated with adverse psychological outcomes within each country.ResultsA total of 1146 participants from India, Indonesia, Singapore, Malaysia and Vietnam were studied. Despite having the lowest volume of cases, Vietnam displayed the highest prevalence of PTSD. In contrast, Singapore reported the highest case volume, but had a lower prevalence of depression and anxiety. In the multivariable analysis, we found that non-medically trained personnel, the presence of physical symptoms and presence of prior medical conditions were independent predictors across the participating countries.ConclusionsThis study highlights that the varied prevalence of psychological adversity among healthcare workers is independent of the burden of COVID-19 cases within each country. Early psychological interventions may be beneficial for the vulnerable groups of healthcare workers with presence of physical symptoms, prior medical conditions and those who are not medically trained.
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- 2020
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24. Cognitive Impairment in Heart Failure—A Review
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Fang Qin Goh, William K. F. Kong, Raymond C. C. Wong, Yao Feng Chong, Nicholas W. S. Chew, Tiong-Cheng Yeo, Vijay Kumar Sharma, Kian Keong Poh, and Ching-Hui Sia
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heart failure ,cognitive impairment ,dementia ,cerebral haemodynamics ,Biology (General) ,QH301-705.5 - Abstract
Cognitive impairment (CI) is common in heart failure (HF). Patients with HF demonstrate reduced global cognition as well as deficits in multiple cognitive domains compared to controls. Degree of CI may be related to HF severity. HF has also been associated with an increased risk of dementia. Anatomical brain changes have been observed in patients with HF, including grey matter atrophy and increased white matter lesions. Patients with HF and CI have poorer functional independence and self-care, more frequent rehospitalisations as well as increased mortality. Pathophysiological pathways linking HF and CI have been proposed, including cerebral hypoperfusion and impaired cerebrovascular autoregulation, systemic inflammation, proteotoxicity and thromboembolic disease. However, these mechanisms are poorly understood. We conducted a search on MEDLINE, Embase and Scopus for original research exploring the connection between HF and CI. We then reviewed the relevant literature and discuss the associations between HF and CI, the patterns of brain injury in HF and their potential mechanisms, as well as the recognition and management of CI in patients with HF.
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- 2022
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25. A two‐decade population‐based study on the effect of hypertension in the general population with obesity in the United States
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Gwyneth Kong, Yip H. Chin, Jieyu Lim, Cheng H. Ng, Shankar Kannan, Bryan Chong, Chaoxing Lin, Kai E. Chan, Vickram V. Anand, Ethan C. Z. Lee, Shaun Loong, Zhen Y. Wong, Chin M. Khoo, Mark Muthiah, Roger Foo, Georgios K. Dimitriadis, Gemma A. Figtree, Yibin Wang, Mark Chan, and Nicholas W. S. Chew
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Nutrition and Dietetics ,Endocrinology ,Endocrinology, Diabetes and Metabolism ,Medicine (miscellaneous) - Published
- 2023
26. The prognostic value of including non‐alcoholic fatty liver disease in the definition of metabolic syndrome
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Clarissa Elysia Fu, Jie Ning Yong, Cheng Han Ng, Benjamin Nah, Nicholas W. S. Chew, Yip Han Chin, Gwyneth Kong, Darren Jun Hao Tan, Wen Hui Lim, Lincoln Kai En Lim, Rebecca Wenling Zeng, Asim Shabbir, Eunice X. X. Tan, Daniel Q. Huang, Chin Meng Khoo, Mohammad Shadab Siddqui, Mark Y. Y. Chan, Mazen Noureddin, Mamas A. Mamas, and Mark Muthiah
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Hepatology ,Gastroenterology ,Pharmacology (medical) - Published
- 2023
27. Hepatic steatosis and advanced hepatic fibrosis are independent predictors of long‐term mortality in acute myocardial infarction
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YipHan Chin, Jieyu Lim, Gwyneth Kong, Cheng Han Ng, Rachel Goh, Mark Muthiah, Anurag Mehta, Bryan Chong, Chaoxing Lin, Kai En Chan, William Kong, Kian Keong Poh, Roger Foo, Ping Chai, Tiong‐Cheng Yeo, Adrian F. Low, Chi Hang Lee, Huay Cheem Tan, Mark Yan‐Yee Chan, A Mark Richards, Poay‐Huan Loh, and Nicholas W. S. Chew
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Endocrinology ,Endocrinology, Diabetes and Metabolism ,Internal Medicine - Abstract
Hepatic steatosis is a recognised risk factor for cardiovascular disease (CVD). However, its effect on patient outcomes following acute myocardial infarction (AMI) remains poorly understood. This study examines the prevalence and prognosis of hepatic steatosis and fibrosis in post-AMI patients.Patients presenting with AMI to a tertiary hospital were examined from 2014 to 2021. Hepatic steatosis and advanced hepatic fibrosis were determined using hepatic steatosis index and fibrosis-4 index respectively. The primary outcome was all-cause mortality. Cox regression models identified determinants of mortality after adjustments and Kaplan-Meier curves were constructed for all-cause mortality, stratified by hepatic steatosis and advanced fibrosis.Of 5,765 patients included, 24.8% had hepatic steatosis, of whom 41.7% were diagnosed with advanced fibrosis. The median follow-up duration was 2.7 years. Patients with hepatic steatosis tended to be younger, female, with elevated BMI and increased metabolic burden of diabetes, hypertension and hyperlipidemia. Patients with hepatic steatosis (24.6% vs 20.9% mortality, p0.001) and advanced fibrosis (45.6% vs 32.9% mortality, p0.001) had higher all-cause mortality rates compared to their respective counterparts. Hepatic steatosis (aHR 1.364, 95%CI 1.145-1.625, p=0.001) was associated with all-cause mortality after adjustment for confounders. Survival curves demonstrated excess mortality in patients with hepatic steatosis compared to those without (p=0.002).Hepatic steatosis and advanced fibrosis have a substantial prevalence among patients with AMI. Both are associated with mortality, with incrementally higher risk when advanced fibrosis ensues. Hepatic steatosis and fibrosis could help risk stratification of AMI patients beyond conventional risk factors. This article is protected by copyright. All rights reserved.
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- 2023
28. Higher mortality in acute coronary syndrome patients without standard modifiable risk factors: Results from a global meta-analysis of 1,285,722 patients
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Gwyneth, Kong, Yip Han, Chin, Bryan, Chong, Rachel Sze Jen, Goh, Oliver Zi Hern, Lim, Cheng Han, Ng, Mark, Muthiah, Roger, Foo, Stephen T, Vernon, Poay Huan, Loh, Mark Y, Chan, Nicholas W S, Chew, and Gemma A, Figtree
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Cardiology and Cardiovascular Medicine - Abstract
Standard modifiable cardiovascular risk factors (SMuRF), comprising diabetes, hyperlipidemia, hypertension, and smoking, are used for risk stratification in acute coronary syndrome (ACS). Recent studies showed an increasing proportion of SMuRF-less ACS patients.Embase, Medline and Pubmed were searched for studies comparing SMuRF-less and SMuRF patients with first presentation of ACS. We conducted single-arm analyses to determine the proportion of SMuRF-less patients in the ACS cohort, and compared the clinical presentation and outcomes of these patients.Of 1,285,722 patients from 15 studies, 11.56% were SMuRF-less. A total of 7.44% of non-ST-segment-elevation ACS patients and 12.87% of ST-segment-elevation myocardial infarction (STEMI) patients were SMuRF-less. The proportion of SMuRF-less patients presenting with STEMI (60.71%) tended to be higher than those with SMuRFs (49.21%). Despite lower body mass index and fewer comorbidities such as chronic kidney disease, peripheral arterial disease, stroke and heart failure, SMuRF-less patients had increased in-hospital mortality (RR:1.57, 95%CI:1.38 to 1.80) and cardiogenic shock (RR:1.39, 95%CI:1.18 to 1.65), but lower risk of heart failure (RR:0.91, 95%CI:0.83 to 0.99). On discharge, SMuRF-less patients were prescribed less statins (RR:0.93, 95%CI:0.91 to 0.95), beta-blockers (RR:0.94, 95%CI:0.92 to 0.96), P2Y12 inhibitors (RR: 0.98, 95%CI: 0.96 to 0.99), and angiotensin-converting-enzyme inhibitor or angiotensin-receptor blocker (RR:0.92, 95%CI:0.75 to 0.91).In this study level meta-analysis, SMuRF-less ACS patients demonstrate higher mortality compared with patients with at least one traditional atherosclerotic risk factor. Underuse of guideline-directed medical therapy amongst SMuRF-less patients is concerning. Unraveling novel risk factors amongst SMuRF-less individuals is the next important step.Standard modifiable cardiovascular risk factors (SMuRF), comprising diabetes mellitus, hyperlipidemia, hypertension, and smoking, are often used for risk stratification in acute coronary syndrome (ACS). Recent studies showed an increasing proportion of SMuRF-less ACS patients. Of 1,285,722 ACS patients, 11.56% were SMuRF-less. Despite lower body mass index and fewer comorbidities, SMuRF-less patients had increased in-hospital mortality and cardiogenic shock. However, despite worse outcomes, SMuRF-less patients were prescribed less guideline-directed medical therapies on discharge.
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- 2023
29. Bayesian Meta-analysis of Direct Oral Anticoagulation Versus Vitamin K Antagonists With or Without Concomitant Antiplatelet After Transcatheter Aortic Valve Implantation in Patients With Anticoagulation Indication
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Gabriel Sheng Jie Lee, Hannah Si En Tay, Vanessa Xin Yi Teo, Rachel Sze Jen Goh, Bryan Chong, Siew Pang Chan, Edgar Tay, Yinghao Lim, James Yip, Nicholas W. S Chew, and Ivandito Kuntjoro
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Cardiology and Cardiovascular Medicine - Abstract
Patients undergoing transcatheter aortic valve implantation (TAVI) commonly have co-morbidities requiring anticoagulation. However, the optimal post-procedural anticoagulation regimen is not well-established. This meta-analysis investigates safety and efficacy outcomes of direct oral anticoagulants (DOACs) and Vitamin K Antagonist (VKA), with or without concomitant antiplatelet therapy. We searched EMBASE and MEDLINE for appropriate studies. Subgroup analyses were performed for anticoagulant monotherapy and combined therapy with antiplatelet agents. Eleven studies (6359 patients) were included. Overall, there were no differences between DOACs and VKA for all-cause mortality (Odds Ratio [OR]: .69; Credible Interval [CrI]: .40–1.06), cardiovascular-related mortality (OR: .76; Crl: .13–3.47), bleeding (OR: .95; CrI: .75–1.17), stroke (OR: 1.04; CrI: .65–1.63), myocardial infarction (OR: 1.51; CrI: .55–3.84), and valve thrombosis (OR: .29; CrI: .01–3.54). For DOACs vs VKA monotherapy subgroup, there were no differences in outcomes. For the combined therapy subgroup, there was decreased odds of all-cause mortality in the DOACs group compared with the VKA group (OR: .13; CrI: .02–.65), but no differences for bleeding and stroke. DOACs and VKA have similar safety and efficacy profiles for post-TAVI patients with anticoagulation indication. However, if concomitant antiplatelet therapy is required, DOACs were more favorable than VKA for all-cause mortality.
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- 2022
30. The clinical impact of anti-hypertensive treatment drug-gene pairs in the asian population: a systematic review of publications in the past decade
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Sarah Wai Yee Tang, Aaron Shengting Mai, Nicholas W. S. Chew, Wilson Wai San Tam, and Doreen Su-Yin Tan
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Pharmacogenetics play an important role in determining the anti-hypertensive effects of blood pressure-lowering medications and have the potential to improve future patient care. Current literature on the topic, however, has a heavy focus on Caucasians and may not be generalisable to the Asian populations. Therefore, we have conducted this systematic review to summarise and evaluate the literature of the past decade. PubMed, Embase, and the Cochrane Register of Controlled Trials were searched for relevant studies from 1 January 2011 to 23 July 2021. The outcome of interest was the response to anti-hypertensive treatment in Asians according to each genetic polymorphism. A total of 26 studies with a total of 8837 patients were included in our review, covering five classes of anti-hypertensive agents-namely, angiotensin-converting enzyme inhibitors (ACEI), angiotensin II receptor blockers (ARB), beta-blockers (BB), calcium channel blockers (CCB), and thiazide-like diuretics. Response to ACEI therapy was most susceptible to genotypic variations, while the efficacy of ARB and CCB were affected by pharmacogenetic differences to varying extent. For BB, only variations in the ADRB1 genotype significantly affects therapeutic response, while the therapeutic efficacy of thiazide-like diuretics was correlated with genotypic variations in the REN and ACE. This systematic review evaluated the impact of pharmacogenetic variations on the therapeutic efficacy of anti-hypertensive treatment in Asians and has described numerous drug-gene pairs that are potentially clinically important. Future prospective studies with larger sample sizes and longer follow-up periods are needed to better elucidate the impact of these drug-gene pairs.
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- 2022
31. Prognostic value of left atrial volume index in degenerative mitral stenosis
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Idit Yedidya, Steele C. Butcher, Jan Stassen, Pieter van der Bijl, Jinghao Nicholas Ngiam, Nicholas W. S. Chew, Ching-Hui Sia, Ryan Leow, Tony Yi-Wei Li, William K. F. Kong, Kian Keong Poh, Ran Kornowski, Nina Ajmone Marsan, Victoria Delgado, Jeroen J. Bax, delgado, victoria/0000-0002-9841-2737, Yedidya, Idit, Butcher, Steele C., STASSEN, Jan, van der Bijl, Pieter, Ngiam, Jinghao Nicholas, Chew, Nicholas W. S., Sia, Ching-Hui, Leow, Ryan, Li, Tony Yi-Wei, Kong, William K. F., Poh, Kian Keong, Kornowski, Ran, Marsan, Nina Ajmone, Delgado, Victoria, and Bax, Jeroen J.
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Male ,Predictive Value of Tests ,Left atrial volume index ,Humans ,Mitral Valve Stenosis ,Female ,Atrial Appendage ,Heart Atria ,Degenerative mitral stenosis ,Prognosis - Abstract
Purpose Degenerative mitral stenosis (DMS) is associated with a poor prognosis. Although mean transmitral gradient (TMG) has shown a good correlation with outcome, little is known about the association between other echocardiographic parameters and prognosis in patients with DMS. The current study aimed to evaluate the prognostic value of left atrial volume index (LAVI) in patients with DMS. Methods A total of 155 patients with DMS (72[63-80] years, 67% female) were included. The population was divided according to LAVI: normal-sized LAVI (LAVI 34 ml/m2). Results Patients with enlarged LAVI had a higher left ventricular mass index (120[96-146] vs. 91[70-112] g/m2 p < 0.001), as well as a higher prevalence of significant mitral regurgitation and severe aortic stenosis (23% vs. 10% p = 0.046 and 38% vs. 15% p=0.001, respectively) compared to patients with normal-sized LAVI. During a median follow-up of 25 months, 56 (36%) patients died. Patients with enlarged LAVI had worse prognosis compared to patients with normal-sized LAVI (p = 0.026). In multivariable Cox regression model, an enlarged LAVI was independently associated with all-cause mortality (HR 2.009, 95% CI 1.040 to 3.880, P = 0.038). Conclusion An enlarged LAVI (> 34 ml/m2) is significantly associated with excess mortality in patients with DMS. After adjusting for potential confounders, an enlarged LAVI was the only parameter that remained independently associated with prognosis. The Department of Cardiology of the Leiden University Medical Center received research grants from Medtronic, Biotronik, Boston Scientifc, GE Healthcare, and Edwards Lifesciences. Steele C Butcher received funding from European Society of Cardiology [Grant Number 000080404]. Idit Yedidya received a fellowship grant from Rabin Medical Center, Israel. Ching-Hui Sia was supported by the National University of Singapore Yong Loo Lin School of Medicine’s Junior Academic Faculty Scheme.
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- 2022
32. Comparison of mechanistic pathways of bariatric surgery in patients with diabetes mellitus: A <scp>B</scp> ayesian network meta‐analysis
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Chaoxing Lin, Trevor James Jun‐Ming Yeong, Wen Hui Lim, Cheng Han Ng, Chun En Yau, Yip Han Chin, Mark D. Muthiah, Poay Huan Loh, Roger S. Y. Foo, Shao Feng Mok, Asim Shabbir, Georgios K. Dimitriadis, Chin Meng Khoo, and Nicholas W. S. Chew
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Treatment Outcome ,Nutrition and Dietetics ,Endocrinology ,Diabetes Mellitus, Type 2 ,Endocrinology, Diabetes and Metabolism ,Network Meta-Analysis ,Bariatric Surgery ,Humans ,Medicine (miscellaneous) ,Bayes Theorem ,Life Style - Abstract
Metabolic bariatric procedures are potentially efficacious treatment options in patients with type 2 diabetes mellitus (T2DM). Previous meta-analyses focused on individual operative approaches rather than the mechanistic pathways behind different bariatric procedures. This updated network meta-analysis aimed to synthesize new evidence and comparatively evaluate the efficacy of metabolic surgery against restrictive procedures and standard first-line treatment for patients with T2DM.Embase, MEDLINE, and trial registries were searched for randomized controlled trials on bariatric surgeries in patients with T2DM on September 3, 2021. A Bayesian network meta-analysis was conducted. The primary outcome was T2DM remission. Secondary outcomes included changes in BMI, lipoprotein levels, and blood pressure.Thirty-two articles were included. Metabolic surgery was statistically superior to restrictive procedures (risk ratio [RR]: 2.57, 95% credibility intervals [CrI]: 1.36-5.43), medical therapy (RR: 35.29, 95% Crl: 10.56-183.23), and lifestyle intervention (RR: 40.51, 95% Crl: 5.32-402.59) in T2DM remission. Metabolic surgery significantly lowered BMI and blood pressure compared with other interventions. Restrictive procedures significantly increased high-density lipoprotein compared with metabolic surgery. Lifestyle intervention and metabolic surgery were statistically superior to restrictive procedures in reducing low-density lipoprotein.The superiority in diabetes remission and favorable metabolic profile support the choice of metabolic surgery over restrictive bariatric procedures.
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- 2022
33. Nonalcoholic Steatohepatitis Drug Development Pipeline: An Update
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Nicholas W S, Chew, Cheng Han, Ng, Emily, Truong, Mazen, Noureddin, and Kris V, Kowdley
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Bile Acids and Salts ,Liver Cirrhosis ,Drug Development ,Liver ,Hepatology ,Non-alcoholic Fatty Liver Disease ,Humans - Abstract
Nonalcoholic steatohepatitis (NASH) is a burgeoning global health crisis that mirrors the obesity pandemic. This global health crisis has stimulated active research to develop novel NASH pharmacotherapies targeting dysregulated inflammatory, cellular stress, and fibrogenetic processes that include (1) metabolic pathways to improve insulin sensitivity, de novo lipogenesis, and mitochondrial utilization of fatty acids; (2) cellular injury or inflammatory targets that reduce inflammatory cell recruitment and signaling; (3) liver–gut axis targets that influence bile acid enterohepatic circulation and signaling; and (4) antifibrotic targets. In this review, we summarize several of the therapeutic agents that have been studied in phase 2 and 3 randomized trials. In addition to reviewing novel therapeutic drugs targeting nuclear receptor pathways, liver chemokine receptors, liver lipid metabolism, lipotoxicity or cell death, and glucagon-like peptide-1 receptors, we also discuss the rationale behind the use of combination therapy and the lessons learned from unsuccessful or negative clinical trials.
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- 2022
34. Efficacy and safety of tirzepatide for treatment of overweight or obesity. A systematic review and meta-analysis
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Bryan Tan, Xin-Hui Pan, Han Shi Jocelyn Chew, Rachel Sze Jen Goh, Chaoxing Lin, Vickram Vijay Anand, Ethan Cheng Zhe Lee, Kai En Chan, Gwyneth Kong, Christen En Ya Ong, Hui Charlotte Chung, Dan Yock Young, Mark Y. Chan, Chin Meng Khoo, Anurag Mehta, Mark Dhinesh Muthiah, Mazen Noureddin, Cheng Han Ng, Nicholas W. S. Chew, and Yip Han Chin
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Nutrition and Dietetics ,Endocrinology, Diabetes and Metabolism ,Medicine (miscellaneous) - Published
- 2023
35. Higher Risk of Adverse Cardiovascular Outcomes in Females with Type 2 Diabetes Mellitus: An Umbrella Review of Systematic Reviews
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Clyve Yu Leon Yaow, Bryan Chong, Yip Han Chin, Martin Tze Wah Kueh, Cheng Han Ng, Kai En Chan, Ansel Shao Pin Tang, Charlotte Chung, Rachel Goh, Gwyneth Kong, Mark Muthiah, Indah Sukmawati, Antonia Anna Lukito, Mark Y Chan, Chin Meng Khoo, Anurag Mehta, Mamas A Mamas, Georgios K Dimitriadis, and Nicholas W S Chew
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Epidemiology ,Cardiology and Cardiovascular Medicine - Abstract
Background Previous studies have shown that females with type 2 diabetes mellitus (T2DM) may have excess mortality risk compared to their male counterparts. An important next step to address the high global burden of T2DM and cardiovascular disease (CVD) is an umbrella review to summarize data on sex differences in cardiovascular outcomes for patients with T2DM and assess the strength of the evidence observed. Methods Medline and Embase were searched from inception till 7th August 2022 for systematic reviews and meta-analyses studying the effects of sex on cardiovascular outcomes in T2DM patients. Results from reviews were synthesized with a narrative synthesis, with tabular presentation of findings and forest plots for reviews that performed a meta-analysis. Results 27 review articles evaluating sex differences in cardiovascular outcomes were included. Females with T2DM had higher risk of developing coronary heart disease (CHD; RRR: 1.52, 95%CI: 1.32–1.76, p Conclusions This umbrella review demonstrates that females with T2DM have a higher risk of cardiovascular outcomes than male counterparts. Future research should address the basis of this heterogeneity and epidemiological factors for better quality of evidence, and identify actionable interventions that will narrow these sex disparities.
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- 2023
36. Clinical, echocardiographic and prognostic outcomes of patients with concordant and discordant high-gradient aortic stenosis in an Asian cohort
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Nicholas W. S. Chew, Yeung Jek Ho, J. H. Nicholas Ngiam, Gwyneth Kong, Yip Han Chin, Oliver Zi Hern Lim, Chaoxing Lin, Ching-Hui Sia, Poay-Huan Loh, Ivandito Kuntjoro, Raymond C. C. Wong, William K. F. Kong, Tiong-Cheng Yeo, and Kian-Keong Poh
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Radiology, Nuclear Medicine and imaging ,Cardiology and Cardiovascular Medicine - Abstract
Literature of patients with severe high-gradient aortic stenosis (HG AS) (mean pressure gradient [MPG] ≥ 40 mmHg and aortic valve area [AVA] ≥ 1.0 cm
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- 2022
37. Comparison of biodegradable and newer generation durable polymer drug-eluting stents with short-term dual antiplatelet therapy: a systematic review and Bayesian network meta-analysis of randomized trials comprising of 43,875 patients
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Bryan Chong, Rachel Sze Jen Goh, Gwyneth Kong, Faith Ruo En Sim, Chen Han Ng, Xin Yi Vanessa Teo, Jing Xuan Quek, Oliver Lim, Yip Han Chin, Siew-Pang Chan, Mark Y. Chan, Huay-Cheem Tan, Nicholas W. S. Chew, and Poay Huan Loh
- Subjects
Polymers ,Network Meta-Analysis ,Myocardial Infarction ,Drug-Eluting Stents ,Hemorrhage ,Thrombosis ,Coronary Artery Disease ,Hematology ,Death ,Stroke ,Percutaneous Coronary Intervention ,Treatment Outcome ,Humans ,Cardiology and Cardiovascular Medicine ,Platelet Aggregation Inhibitors ,Randomized Controlled Trials as Topic - Abstract
Newer generation durable polymer drug-eluting stents (DP-DES) and biodegradable polymer DES (BP-DES) have similar efficacy with dual-antiplatelet therapy (DAPT) duration of 6 months. However, this difference in outcomes have not been well studied in shorter DAPT regime. This study compares the safety and efficacy profiles of DP-DES and BP-DES based on short-term (1-3 months), intermediate-term (4-6 months) and standard DAPT (6-12 months) durations. A search was conducted on Embase and Medline for Randomized Controlled Trials (RCTs) comparing stent types, and DAPT durations. Primary endpoints include cardiac death, myocardial infarction (MI), definite stent thrombosis, stroke, target vessel revascularization (TVR) and major bleeding. Network analysis was conducted to summarize the evidence. A total of 15 RCTs involving 43,875 patients were included. DP-DES was associated with significantly lower major bleeding rates compared to BP-DES (RR 0.44, Crl 0.22-0.83) in short-term DAPT. Among DP-DES patients, short-term DAPT was associated with lower major bleeding risk compared to standard DAPT (RR 0.47, CrI 0.32-0.69). This favorable bleeding profile with short DAPT was not found in BP-DES patients. Cardiac death, MI, definite stent thrombosis, stroke and TVR rates were similar across the various DAPT durations and stent types. Our preliminary findings demonstrated comparable efficacy and safety outcomes between BP-DES and newer generation BP-DES across various DAPT durations. In patients requiring short DAPT, DP-DES had more favourable major bleeding profile compared to BP-DES, without compromising anti-thrombotic efficacy.
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- 2022
38. The impact of atrial fibrillation on prognosis in aortic stenosis
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Dorien Laenens, Jan Stassen, Xavier Galloo, See Hooi Ewe, Gurpreet K Singh, Mohammed R Ammanullah, Kensuke Hirasawa, Ching-Hui Sia, Steele C Butcher, Nicholas W S Chew, William K F Kong, Kian Keong Poh, Zee P Ding, Nina Ajmone Marsan, and Jeroen J Bax
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Health Policy ,Cardiology and Cardiovascular Medicine - Abstract
Background Atrial fibrillation (AF) and aortic stenosis (AS) are both highly prevalent and often coexist. Various studies have focused on the prognostic value of AF in patients with AS, but rarely considered left ventricular (LV) diastolic function as a prognostic factor. Objective To evaluate the prognostic impact of AF in patients with AS while correcting for LV diastolic function. Methods Patients with first diagnosis of significant AS were selected and stratified according to history of AF. The endpoint was all-cause mortality. Results In total, 2849 patients with significant AS (mean age 72 ± 12 years, 54.8% men) were evaluated, and 686 (24.1%) had a history of AF. During a median follow-up of 60 (30–97) months, 1182 (41.5%) patients died. Ten-year mortality rate in patients with AF was 46.8% compared to 36.8% in patients with sinus rhythm (SR) (log-rank P Conclusion Patients with significant AS and AF have a reduced survival as compared to patients with SR. Nonetheless, when correcting for markers of LV diastolic function, AF was not independently associated with outcomes in patients with significant AS.
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- 2023
39. 1875. Continued demographic shifts in hospitalised COVID-19 patients from migrant workers to a vulnerable and more elderly local population at risk of severe disease
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Jinghao Nicholas Ngiam, Srishti Chhabra, Wilson Goh, Meng Ying Sim, Tze Sian Liong, Nicholas W S Chew, Ching Hui Sia, Gail Brenda Cross, and Paul Anantharajah Tambyah
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Infectious Diseases ,Oncology - Abstract
Background In the early months of the COVID-19 pandemic, the vast majority of infected persons were migrant workers living in dormitories who were young and with few medical co-morbidities. In 2021, this shifted to the more vulnerable and elderly population within the local community. We examined trends amongst the hospitalised cases, in order to demonstrate changes in disease severity in association with the evolving demographics. Demographic shifts in hospitalised patients with COVID-19. Proportion of hospitalised patients with COVID-19 requiring intensive care over time in Singapore Methods All patients with PCR-positive SARS-CoV-2 admitted from February 2020 to October 2021 were included, and subsequently stratified by their year of admission (2020 or 2021). Demographics were also classified by sex, ethnicity, as well as mode of transmission, namely i) imported cases, ii) locally-transmitted cases outside of migrant worker dormitories, and iii) migrant worker dormitory cases. We compared the baseline clinical characteristics, clinical presentation and outcomes. Results A majority of cases were seen in 2020 (n=1359), compared with 2021 (n=422), due to the large outbreaks in migrant worker dormitories. Nevertheless, the greater proportion of locally-transmitted cases outside of dormitories in 2021 (78.7% vs 12.3%) compared with 2020 meant a significantly older population with more medical co-morbidities were exposed to COVID-19. This led to an observably higher proportion of patients with severe disease, presenting with raised inflammatory markers, need for therapeutics, supplemental oxygenation and higher mortality. Baseline characteristics of hospitalised patients with COVID-19 in Singapore over time. Conclusion Changing demographics and the characteristics of the exposed populations are associated with distinct differences in clinical presentation and outcomes. Understanding demographic shifts may be crucial in appropriate allocation of healthcare resources in managing hospitalised patients with COVID-19. Disclosures All Authors: No reported disclosures.
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- 2022
40. 300. Trends in electrocardiographic and cardiovascular manifestations of patients hospitalized with COVID-19
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Jinghao Nicholas Ngiam, Wilson Goh, Meng Ying Sim, Srishti Chhabra, Tze Sian Liong, Nicholas W S Chew, Ping Chai, Tiong Cheng Yeo, Gail Brenda Cross, Paul Anantharajah Tambyah, and Ching Hui Sia
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Infectious Diseases ,Oncology - Abstract
Background Early in the coronavirus disease 2019 (COVID-19) pandemic, a low incidence of cardiovascular complications was reported amongst hospitalised patients with COVID-19 in Singapore. Little was known about the trend of cardiovascular complications as the pandemic progressed. As such, we sought to examine the evolving trends in electrocardiographic and cardiovascular manifestations in patients hospitalised for COVID-19 infection. Methods We examined the first 1781 consecutive hospitalised patients with polymerase chain reaction (PCR) confirmed COVID-19 in a tertiary academic centre. We divided the population based on those who had an abnormal electrocardiogram (ECG) and those who had a normal ECG, comparing the baseline characteristics and outcomes between the 2 groups. Cardiovascular complications such as acute myocardial infarction, stroke, pulmonary embolism, myocarditis and mortality were also examined over time. Results Of the 261 (14.7%) patients presenting with abnormal ECG, they were more likely to be symptomatic with complaints of breathlessness, palpitations and chest pain. Sinus tachycardia was the most common arrhythmia. Troponin I levels (41.6±264.3 vs 97.0±482.9, p=0.047) and C-reactive protein levels (20.1±50.7 vs 13.9±24.1 µmol/L, p=0.003) were significantly higher amongst those with abnormal ECGs at presentation, with a higher prevalence of myocarditis (1.9% vs 0.5%, p=0.021), pulmonary embolism (1.9% vs 0.3%, p=0.009) and acute myocardial infarction (1.1% vs 0.1%, p=0.025). Over time, there was a trend towards a higher proportion of hospitalised patients with cardiovascular complications. Baseline characteristics of hospitalised patients with COVID-19, with or without abnormal ECG at presentation Changes in percentage of hospitalised patients with COVID-19, experiencing cardiovascular events (acute myocardial infarction, stroke, myocarditis, pulmonary embolism and death) over time Conclusion A baseline ECG at presentation is a simple test that provides valuable information on potential cardiovascular complications in the context of COVID-19. Although the prevalence of abnormal ECGs is relatively low, it appears to be increasing over time amongst hospitalised patients with COVID-19. Disclosures All Authors: No reported disclosures.
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- 2022
41. 302. Using Severe Acute Respiratory Syndrome Coronavirus-2 Spike Protein Antibody Serology in addition to the ISARIC 4C Risk Score to Better Discriminate Adverse Clinical Outcomes in Hospitalized Patients with Coronavirus Disease 2019
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Wilson Goh, Jinghao Nicholas Ngiam, Srishti Chhabra, Meng Ying Sim, Paul Anantharajah Tambyah, Gail Brenda Cross, Nicholas W S Chew, and Ching Hui Sia
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Infectious Diseases ,Oncology - Abstract
Background The Coronavirus disease 2019 (COVID-19) pandemic continues to threaten many countries globally. Large-scale vaccination exercises have helped to reduce transmission and severity of disease. We sought to modify an existing clinical score (the ISARIC-4C mortality score) to include serological status to better prognosticate hospitalized patients with COVID-19. Methods We examined the first 1781 consecutive hospitalized patients with polymerase chain reaction (PCR) confirmed COVID-19 in a tertiary academic centre. We divided the study population into those requiring intensive care and those who did not require throughout their inpatient stay. Baseline characteristics examined include medical comorbidities, vaccination status, SARS-CoV-2 serology spike protein, duration of fever and haemodynamics were compared. Adverse outcomes were defined as patients who required intensive care or mortality. Performance of the risk scores were measured by the area under receiver operating characteristic curves (AUC) in predicting adverse outcomes. Results The 55 patients requiring intensive care during their inpatient stay tended to have persistent fever beyond 72 hours and had lower titres of spike protein antibodies. (58.9 (±105.3) U/mL vs 144.2 (±116.2) U/mL, p = 0.007). A high spike protein antibody titre >75 U/mL was independently protective for adverse outcomes (adjusted OR 0.15, 95% CI 0.04-0.53), even after adjusting for the ISARIC-4C score and the presence of persistent fever. Adding the serological status and presence of persistent fever to the ISARIC-4C score improved its performance in predicting adverse outcomes (AUC 0.84, 95% CI 0.78-0.89). Conclusion Addition of the SARS-CoV-2 serology spike protein titre and prolonged fever to the ISARIC-4C mortality score helps to better prognosticate adverse clinical outcomes in hospitalized patients with COVID-19. Disclosures All Authors: No reported disclosures.
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- 2022
42. Meta-analysis of the Placebo and Nocebo Effects Associated with Placebo Treatment in Randomized Trials of Lipid Lowering Therapy
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Yip H Chin, Oliver Lim, Chaoxing Lin, Yu Y Chan, Gwyneth Kong, Cheng H Ng, Bryan Chong, Nicholas Syn, Kai E Chan, Mark D Muthiah, Mohammad S Siddiqui, Jiong-Wei Wang, Gemma Figtree, Mark Y Chan, and Nicholas W S Chew
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Health Policy ,Cardiology and Cardiovascular Medicine - Abstract
Background Randomized controlled trials (RCTs) of lipid-lowering therapy (LLT) in which the control groups received placebo without background LLT offer unique insights into the placebo and nocebo effects of lipid-lowering RCTs. Methods and results Embase and Medline were searched for hyperlipidaemia RCTs with placebo-controlled arms. Placebo arms with background LLT were excluded. A single arm meta-analysis of proportions was used to estimate major adverse cardiovascular events (MACE) and adverse events (AE). A meta-analysis of means was used to estimate the pooled mean differences of total cholesterol (TC), low-density lipoprotein (LDL), high-density lipoproteins (HDL) and triglycerides (TG). A total of 40 RCTs and 37 668 placebo-treated participants were included. The pooled mean changes for TC, LDL, HDL, and TG were −0.019 mmol/L, −0.028 mmol/L, 0.013 mmol/L, and 0.062 mmol/L respectively among placebo-treated participants, indicating a modest placebo effect. The pooled average nocebo effect among placebo-treated participants was 42.62% for all AEs and 3.38% for musculoskeletal-related AEs, 11.36% for gastrointestinal-related AEs, and 6.62% for headaches. Placebo-treated participants in secondary prevention RCTs had a far higher incidence of these nocebo effects than primary prevention RCTs: any AEs (OR 6.76, 95% CI: 5.56–8.24, P Conclusion Our meta-analysis of placebo-treated participants in RCTs with no background LLT indicate a modest placebo effect but prominent nocebo effect of musculoskeletal, headache, and gastrointestinal symptoms that was greatest among secondary prevention RCTs. These findings may inform the design of future LLT RCTs.
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- 2022
43. Long-term outcomes in acute coronary syndrome patients without standard modifiable risk factors: a multi-ethnic retrospective cohort study Of 5400 asian patients
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Gwyneth Kong, Nicholas W. S. Chew, Cheng Han Ng, Yip Han Chin, Rebecca Zeng, Roger Foo, Koo Hui Chan, Adrian Fatt-Hoe Low, Chi-Hang Lee, Mark Yan-Yee Chan, Tiong-Cheng Yeo, Huay-Cheem Tan, and Poay-Huan Loh
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Heart Failure ,Cohort Studies ,Treatment Outcome ,Risk Factors ,Shock, Cardiogenic ,Humans ,ST Elevation Myocardial Infarction ,Hematology ,Acute Coronary Syndrome ,Cardiology and Cardiovascular Medicine ,Retrospective Studies - Abstract
A sizeable number of patients without standard modifiable cardiovascular risk factors (SMuRFs), such as hypertension, diabetes, hypercholesterolemia and smoking, suffer from acute coronary syndrome (ACS). These SMuRF-less patients have high short-term morbidity and mortality. We compared both short- and long-term outcomes of SMuRF-less and SMuRF ACS patients in a multi-ethnic Asian cohort.This was a retrospective study of patients with first ACS from 2011 to 2017. The primary outcome was long-term all-cause mortality. Secondary outcomes were 30-day all-cause mortality, cardiac-mortality, unplanned cardiac readmission, cardiogenic shock, heart failure, and stroke. Subgroup analysis was carried out by sex and ACS type.Of 5400 patients, 8.6% were SMuRF-less. The median follow-up time was 6.3 years (interquartile range [IQR] 4.2-8.2 years). SMuRF-less patients were younger and tended to present with ST-segment elevation myocardial infarction (STEMI). They were more likely to require inotropic support, intubation, and have cardiac arrest. At 30 days, SMuRF-less patients had higher rates of all-cause mortality, cardiac-related mortality and cardiogenic shock, but lower rates of heart failure. At 6 years, all-cause mortality was similar in both groups (18.0% versus 17.1% respectively, p = 0.631). Kaplan-Meier curves showed increased early mortality in the SMuRF-less group, but the divergence in survival curves was no longer present in the long-term. The absence of SMuRF was an independent predictor of mortality, regardless of sex or ACS type.In a multi-ethnic cohort of patients with ACS, SMuRF-less patients were observed to have higher mortality than SMuRF patients during the early stages which was attenuated over time.
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- 2022
44. Complete alcohol abstinence increases the risk of NAFLD but not severity. A population analysis with transient elastography
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Jieling Xiao, Cheng Han Ng, Kai En Chan, Ansel Shao Pin Tang, Readon Teh, Abel Ho Zhi Ling, Jie Ning Yong, Wen Hui Lim, Darren Jun Hao Tan, Caitlyn Tan, Khin Maung Win, Aung Hlaing Bwa, Nicholas W. S. Chew, Daniel Huang, Yock Young Dan, Mazen Noureddin, Mohammad Shadab Siddiqui, Arun Sanyal, Nobuharu Tamaki, and Mark Muthiah
- Subjects
Gastroenterology - Abstract
As the global prevalence of non-alcoholic fatty liver disease (NAFLD) continues to rise, ubiquity of alcohol use has also prompted discussion regarding the potential interactions between the two. This study aims to examine the effects of modest alcohol consumption on the prevalence and complications of NAFLD in a multi-ethnic population.This study analyses the 2017-2018 cycles of NHANES that examined liver fibrosis and steatosis with vibration controlled transient elastography. A coarsened exact matching was conducted to reduce confounding. Logistic regression was done with a multivariate model to assess the relationship between alcohol consumption (modest drinkers and non-drinkers) and risk of NAFLD and its complications.2,067 individuals were found to have NAFLD and 284 NAFLD patients had a total history of alcohol abstinence. After coarsened exact matching, the prevalence of NAFLD was 49% (CI: 0.41 - 0.58) in non-drinkers and 33% (CI: 0.26 - 0.41) in modest drinkers. Non-drinkers had twice the odds of NAFLD compared to modest drinkers (OR: 1.99, CI: 1.22 - 3.22,Interestingly, modest alcohol consumption is associated with decreased odds of NAFLD. Further investigations are required to examine the relationship between alcohol consumption and NAFLD and subsequently the potential impact on NAFLD management.
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- 2022
45. The efficacy of GLP-1RAs for the management of postprandial hypoglycemia following bariatric surgery: a systematic review
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David C. Llewellyn, Hugh Logan Ellis, Simon J. B. Aylwin, Eduard Oštarijaš, Shauna Green, William Sheridan, Nicholas W. S. Chew, Carel W. le Roux, Alexander D. Miras, Ameet G. Patel, Royce P. Vincent, and Georgios K. Dimitriadis
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Nutrition and Dietetics ,Endocrinology ,Endocrinology, Diabetes and Metabolism ,Medicine (miscellaneous) - Abstract
Objective Postprandial hyperinsulinemic hypoglycemia with neuroglycopenia is an increasingly recognized complication of Roux-en-Y gastric bypass and gastric sleeve surgery that may detrimentally affect patient quality of life. One likely causal factor is glucagon-like peptide-1 (GLP-1), which has an exaggerated rise following ingestion of carbohydrates after bariatric surgery. This paper sought to assess the role of GLP-1 receptor agonists (GLP-1RAs) in managing postprandial hypoglycemia following bariatric surgery. Methods MEDLINE, Embase, Cochrane Central Register of Controlled Trials (CENTRAL), ClinicalTrials.gov, and Scopus were systematically and critically appraised for all peer-reviewed publications that suitably fulfilled the inclusion criteria established a priori. This systematic review was developed according to the Preferred Reporting Items for Systematic Review and Meta-Analyses Protocols (PRISMA-P). It followed methods outlined in the Cochrane Handbook for Systematic Reviews of Interventions and is registered with PROSPERO (International Prospective Register of Systematic Reviews; identifier CRD420212716429). Results and Conclusions Postprandial hyperinsulinemic hypoglycemia remains a notoriously difficult to manage metabolic complication of bariatric surgery. This first, to the authors' knowledge, systematic review presents evidence suggesting that use of GLP-1RAs does not lead to an increase of hypoglycemic episodes, and, although this approach may appear counterintuitive, the findings suggest that GLP-1RAs could reduce the number of postprandial hypoglycemic episodes and improve glycemic variability.
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- 2022
46. Historical Changes in Weight Classes and the Influence of NAFLD Prevalence: A Population Analysis of 34,486 Individuals
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Benjamin Kai Yi Nah, Cheng Han Ng, Kai En Chan, Caitlyn Tan, Manik Aggarwal, Rebecca Wenling Zeng, Jieling Xiao, Yip Han Chin, Eunice X. X. Tan, Yi Ping Ren, Douglas Chee, Jonathan Neo, Nicholas W. S. Chew, Michael Tseng, Mohammad Shadab Siddiqui, Arun J. Sanyal, Yock Young Dan, and Mark Muthiah
- Subjects
Non-alcoholic Fatty Liver Disease ,Health, Toxicology and Mutagenesis ,Public Health, Environmental and Occupational Health ,Odds Ratio ,Prevalence ,Humans ,Obesity ,Overweight ,Nutrition Surveys ,United States ,non-alcoholic fatty liver disease ,weight classes ,body mass index ,Body Mass Index - Abstract
Background: Non-alcoholic fatty liver disease (NAFLD) is the most common chronic liver disease globally in tandem with the growing obesity epidemic. However, there is a lack of data on the relationship between historical weight changes 10 years ago and at present on NAFLD prevalence at the population level. Therefore, we sought to evaluate the relationship between weight classes and the prevalence of NAFLD. Methods: Data were used from the United States National Health and Nutrition Examination Survey (NHANES) from 1999 to 2018. Univariate and multivariate general linear model analyses were used to obtain risk ratio (RR) estimations of NAFLD events. Results: In total, 34,486 individuals were analysed, with those who were lean at both time points as the control group. Overweight (RR: 14.73, 95%CI: 11.94 to 18.18, p < 0.01) or obese (RR: 31.51, 95%CI: 25.30 to 39.25, p < 0.01) individuals at both timepoints were more likely to develop NAFLD. Residual risk exists where previously obese individuals became overweight (RR: 14.72, 95%CI: 12.36 to 17.52, p < 0.01) or lean (RR: 2.46, 95%CI: 1.40 to 4.31, p = 0.02), and previously overweight individuals who became lean (RR 2.24, 95%CI 1.42 to 3.54, p = 0.01) had persistent elevated risk of developing NAFLD despite weight regression. Sensitivity analysis identified that a higher proportion of individuals with regression in weight class were diabetics and Mexican Americans, while fewer African Americans saw weight-class regression. Conclusions: Residual risk exists in patients who lost weight despite the smaller magnitude of effect, and targeted weight reductions should still be used to mitigate the risk of NAFLD at the population level.
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- 2022
47. Living in the non-alcoholic fatty liver disease silent epidemic: a qualitative systematic review of patients' perspectives
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Cheng Han Ng, Wen Hui Lim, Yip Han Chin, Jie Ning Yong, Rebecca Wenling Zeng, Kai En Chan, Darren Jun Hao Tan, Clarissa Elysia Fu, Ansel Shao Pin Tang, Lay Hoon Goh, Kamala Devi, Nicholas W. S. Chew, Lung‐Yi Loey Mak, Nobuharu Tamaki, Daniel Q. Huang, Mazen Noureddin, Mohammad Shadab Siddiqui, Rohit Loomba, Arun J. Sanyal, and Mark Muthiah
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Hepatology ,Non-alcoholic Fatty Liver Disease ,Health Personnel ,Gastroenterology ,Quality of Life ,Humans ,Pharmacology (medical) - Abstract
Non-alcoholic fatty liver disease (NAFLD) affects one-fourth of the global population. Yet, the care of these patients is limited and awareness of NAFLD remains low in the general public. Investigations into the lives of these patients are often forgotten and traditional quantitative studies only paint part of the picture.To assess the first-hand accounts of these individuals and their perspective on living with NAFLD.A systematic search was conducted on Medline, Embase, CINAHL, PsycINFO and Web of Science database for qualitative literature regarding patients' perspectives on NAFLD. An inductive thematic analysis was conducted to generate themes and supportive subthemes.We incuded eight articles in the review. There were three major themes including the impact on the quality of life, knowledge and information, and attitudes and perceptions on care. The impact of the quality of life details the emotional and physical distress of NAFLD. Knowledge and information include the lack of sufficient communication between healthcare providers and patients with a distinct knowledge gap. Attitudes and perceptions on care extrapolate the current active participation of patients and needs of the patients and the future care that they desire.This review synthesises first-hand accounts of individuals with NAFLD. With the growing burden of NAFLD, future public interventions must consider individual views for success to be found. The identified themes serve as a forefront for consideration for public policies. Ultimately, NAFLD is a multisystem disease, which must be managed by a multidisciplinary team.
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- 2022
48. Comprehensive Review and Updates on Holistic Approach Towards Non-Alcoholic Fatty Liver Disease Management with Cardiovascular Disease
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Nicholas W. S. Chew, Cheng Han Ng, Mark Dhinesh Muthiah, and Arun J. Sanyal
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Liver ,Cardiovascular Diseases ,Non-alcoholic Fatty Liver Disease ,Humans ,Hypoglycemic Agents ,Holistic Health ,Cardiology and Cardiovascular Medicine ,Fibrosis - Abstract
The global prevalence of non-alcoholic fatty liver disease (NAFLD) presents an unmet need in treating these, often asymptomatic, individuals. In this review, we summarised NAFLD management and described recent developments in non-alcoholic steatohepatitis (NASH) therapeutics that can shape the future of NAFLD.A multi-disciplinary effort in promoting sustainable lifestyle measures is paramount, with the goal of either limiting energy surplus alone or in combination with targeting downstream pathways of inflammation and fibrosis. Several antidiabetic medications like PPAR-γ agonist and glucagon-like peptide receptor agonists have beneficial effects on the metabolic profile as well as NASH histology. Vitamin E has shown promise in specific groups of patients with the haptoglobin2 allele protein. Newer drugs have demonstrated promising results in NASH resolution and fibrosis improvement such as obeticholic acid, resmetirom, aramchol, efruxifermin, aldafermin and lanifibranor. Apart from discussing the results of late stage clinical trials and the possible challenges in managing these patients with limited approved therapies, we also discussed the specific management of comorbidities (diabetes, hypertension, hyperlipidaemia, cardiovascular diseases) in NAFLD patients. Treatment strategy needs to target improvements in liver-related outcomes and cardiometabolic profile.
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- 2022
49. Global Prevalence and Clinical Characteristics of Metabolic-associated Fatty Liver Disease: A Meta-Analysis and Systematic Review of 10 739 607 Individuals
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Kai En Chan, Tiffany Jia Ling Koh, Ansel Shao Pin Tang, Jingxuan Quek, Jie Ning Yong, Phoebe Tay, Darren Jun Hao Tan, Wen Hui Lim, Snow Yunni Lin, Daniel Huang, Mark Chan, Chin Meng Khoo, Nicholas W S Chew, Apichat Kaewdech, Naichaya Chamroonkul, Yock Young Dan, Mazen Noureddin, Mark Muthiah, Mohammed Eslam, and Cheng Han Ng
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Endocrinology ,Metabolic Diseases ,Non-alcoholic Fatty Liver Disease ,Endocrinology, Diabetes and Metabolism ,Biochemistry (medical) ,Clinical Biochemistry ,Hypertension ,Diabetes Mellitus ,Prevalence ,Humans ,Biochemistry - Abstract
Background and Aims Metabolic-associated fatty liver disease (MAFLD) was proposed as a better definition of nonalcoholic fatty liver disease (NAFLD) to encompass the metabolic dysregulation associated with NAFLD. This redefinition challenges our understanding of the disease. Hence, this study sought to conduct an updated analysis of the prevalence, clinical characteristics, and associated factors of MAFLD, with a further sensitivity analysis done based on lean and nonobese MAFLD individuals. Methods Medline and Embase databases were searched to include articles on MAFLD. Meta-analysis of proportions was conducted using the generalized linear mix model. Associating factors were evaluated in conventional pairwise meta-analysis with sensitivity analysis on lean and nonobese MAFLD. Results From pooled analysis involving 3 320 108 individuals, the overall prevalence of MAFLD was 38.77% (95% CI 32.94% to 44.95%); 5.37% (95% CI 4.36% to 6.59%) and 29.78% (95% CI 26.06% to 33.79%) of lean and nonobese individuals, respectively, had MAFLD. Metabolic complications such as hypertension [odds ratio (OR) 2.63, 95% CI 1.85 to 3.74, P Conclusions This meta-analysis supports previous studies in reporting MAFLD to affect more than a third of the global population. While exploration of the pathogenic basis of fatty liver disease without metabolic dysregulation is required, the emphasis on management of concomitant metabolic disease in MAFLD can improve multidisciplinary efforts in managing the complex disease.
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- 2022
50. Non-alcoholic fatty liver disease association with structural heart, systolic and diastolic dysfunction: a meta-analysis
- Author
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Jie Ning Yong, Cheng Han Ng, Chloe Wen-Min Lee, Yu Yi Chan, Ansel Shao Pin Tang, Margaret Teng, Darren Jun Hao Tan, Wen Hui Lim, Jingxuan Quek, Jieling Xiao, Yip Han Chin, Roger Foo, Mark Chan, Weiqin Lin, Mazen Noureddin, Mohammad Shadab Siddiqui, Mark D. Muthiah, Arun Sanyal, and Nicholas W. S. Chew
- Subjects
Ventricular Dysfunction, Left ,Hepatology ,Diastole ,Echocardiography ,Non-alcoholic Fatty Liver Disease ,Risk Factors ,Humans - Abstract
Several studies have documented a relationship between non-alcoholic fatty liver disease (NAFLD) and structural heart disease, particularly diastolic function. This meta-analysis will be the first to examine the echocardiographic-derived cardiac function and structural characteristics in NAFLD patients, and its association with liver disease severity and metabolic profile.Medline and Embase were searched and pairwise meta-analysis was conducted in DerSimonian and Laird to obtain the odds ratio (OR) and mean difference (MD) for dichotomous and continuous variables, respectively, to compare the effects of NAFLD on the echocardiography parameters.Forty-one articles involving 33,891 patients underwent echocardiography. NAFLD patients had worse systolic indices with lower ejection fraction (EF, MD: - 0.693; 95% CI: - 1.112 to - 0.274; p = 0.001), and worse diastolic indices with higher E/e' (MD: 1.575; 95% CI: 0.924 to 2.227; p 0.001) compared to non-NAFLD patients. NAFLD patients displayed increased left ventricular mass (LVM, MD: 34.484; 95% CI: 26.236 to 42.732; p 0.001) and epicardial adipose thickness (EAT, MD: 0.1343; 95% CI: 0.055 to 0.214; p = 0.001). An increased severity of NAFLD was associated with worse diastolic indices (decreased E/A ratio, p = 0.007), but not with systolic indices.NAFLD is associated with impaired systolic and diastolic function with changes in cardiac structure. Concomitant metabolic risk factors and liver disease severity are independently associated with worsening systolic and diastolic function.
- Published
- 2022
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