Medicine
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This repository contains the published and unpublished research of the Faculty of Medicine by the staff members of the faculty
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Item Herbal treatments for non-alcoholic fatty liver disease: A systematic review and meta-analysis of randomized controlled trials(Elsevier Ltd, 2024) Rathnayake, D.W.; Sooriyaarachchi, P.; Niriella, M.A.; Ediriweera, D.; Perera, J.BACKGROUND With the rising prevalence of non-alcoholic fatty liver disease (NAFLD), there is a growing need to explore alternative therapeutic interventions. This study aimed to comprehensively evaluate the available evidence from randomized controlled trials (RCTs) for the use of herbal medications in NAFLD.METHODS A literature search was conducted in PubMed, Web of Science and Scopus databases using appropriate keywords for studies published before the 6th of July 2023. RCTs involving humans, with confirmed NAFLD, the intervention group (IG) receiving herbal treatment, the control group (CG) given a placebo, participants aged ≥18 years, published in English, and a Jadad score ≥6 were included. Coffee and green tea as interventions were excluded. A meta-analysis of studies examining the effects of herbal supplementation on clinical and biochemical parameters in patients with NAFLD was performed. Analysis was done with the “meta” package in R programming language version 4.3.RESULTS In this analysis encompassing 48 articles, study durations varied from 6 weeks to 12 months, with sample sizes ranging between 36 and 226 patients. The study included a total of 3741 patients, (IG=2013, CG=1728). Predominant single herbal medicines identified were Phyllanthus niruri, Beta vulgaris, Allium sativum L., Silymarin (Silybum marianum), Portulaca oleracea L., Nigella sativa, and Cynara cardunculus L. Meanwhile, Cynara cardunculus and curcumin were the most common ingredients in polyherbal compounds. Meta-analysis outcomes revealed a higher reduction in alanine aminotransferase (ALT), aspartate aminotransferase (AST), liver stiffness, waist circumference (WC), weight, body mass index (BMI), triglycerides (TG), and fasting blood glucose (FBG) in the IG compared to the CG. Notably, the reductions in ALT and weight were more pronounced in single herb compounds compared to polyherbal compounds. No differences were observed between the two groups regarding HbA1c levels.CONCLUSION These findings highlight the potential benefits of herbal interventions with regard to improvements in anthropometry, metabolic profiles, and liver enzymes in study participants.Item Genetic and metabolic aspects of non-alcoholic fatty liver disease (NAFLD) pathogenicity(Springer, 2023) Samarasinghe, S.M.; Hewage, A.S.; Siriwardana, R.C.; Tennekoon, K.H.; Niriella, M.A.; de Silva, S.BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is the most common chronic liver disease showing a risingprevalence globally. Genetic predisposition plays a key role in the development and progression of the disease pathogenicity. MAIN BODY: This paper summarizes genetic associations based on their influence on several metabolic aspects such as lipid metabolism, glucose metabolism, hepatic iron accumulation and cholesterol metabolism toward the NAFLD pathogenicity. Furthermore, we present variations in some epigenetic characters and the microRNA profile with regard to NAFLD. CONCLUSION: As reported in many studies, the PNPLA3 rs738409 variant seems to be significantly associated with NAFLD susceptibility. Other gene variants like TM6SF2 rs58542926, MBOAT7 rs641738 and GCKR variants also appear to be more prevalent among NAFLD patients. We believe these genetic variants may provide insights into new trends in developing noninvasive biomarkers and identify their suitability in clinical practice in the future.Item Prevalence and associated factors for non-alcoholic fatty liver disease among adults in the South Asian Region: a meta-analysis(Elsevier, 2023) Niriella, M.A.; Ediriweera, D.S.; Withanage, M.Y.; Darshika, S.; de Silva, S.T.; de Silva, H.J.BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is the commonest chronic liver disease worldwide. We estimated the prevalence and predefined associated factors for NAFLD among South-Asian adults. METHODS: We searched PubMed and included descriptive, epidemiological studies with satisfactory methodology, reporting the prevalence of NAFLD with ultrasound. Two authors screened and extracted data independently. Gender, urban/rural settings, general population and individuals with metabolic diseases (MetD) stratified the analysis. In addition, a random-effects meta-analysis of the prevalence and effect sizes of associations of NAFLD was performed. FINDINGS: Twenty-two publications were included after the quality assurance process. The difference in the NAFLD prevalence between the general population and people with MetD was found to be statistically significant (Q = 15.8, DF = 1, P < 0.001). The pooled overall prevalence of NAFLD in the general population was 26.9% (95% CI: 18.9-35.8%) with high heterogeneity. The prevalence was similar among men and women (Q = 0.06, DF = 1, P = 0.806). The NAFLD prevalence in the rural communities was 22.6% (95% CI: 13.6-33.1%), and the prevalence in urban communities was 32.9% (95% CI: 22.8-43.8%) and the difference was not statistically significant (Q = 1.92, DF = 1, P = 0.166). The pooled overall prevalence of NAFLD in patients with MetD was 54.1% (95% CI: 44.1-63.9%) with high heterogeneity. The pooled overall prevalence of NAFLD in the non-obese population was 11.7% (95% CI: 7.0-17.3%). The pooled prevalence of non-obese NAFLD in the NAFLD population was 43.4% (95% CI: 28.1-59.4%). Meta-analysis of binary variables showed that NAFLD in the South Asian population was associated with diabetes mellitus, hypertension, dyslipidaemia, general obesity, central obesity and metabolic syndrome. Gender was not associated with NAFLD. INTERPRETATION: The overall prevalence of NAFLD among adults in South Asia is high, especially in those with MetD, and a considerable proportion is non-obese. In the South Asian population, NAFLD was associated with diabetes mellitus, hypertension, dyslipidaemia, general obesity, central obesity, and metabolic syndrome.Item Fifty liver transplants: a single centre experience of haemodynamic management in liver transplantation for cirrhosis [part 2](The College of Surgeons of Sri Lanka, 2021) Gunetilleke, B.; Ranamuni, R.; Jayaweera, D.; Welikala, N.; Kerner, V.; Hettiarachchi, D.; Munasinghe, N.; Withanage, R.; Wickremasinghe, N.; Hewage, S.; Fernando, M.; Hettiarachchi, D.; Niriella, M.; Dassanayake, A.; Thilakaratne, S.; Wijesuriya, R.; Liyanage, C.; Siriwardana, R.; Dissanayake, J.; Wijesuriya, N.; Rodrigo, U.; Rodrigo, U.; Mudalige, A.; de Silva, J.Globally, an estimated one million deaths occur annually due to complications of cirrhosis. Cirrhosis with end stage liver disease [ESLD] is a leading cause death due to non- communicable diseases in Sri Lanka. Non-alcoholic fatty liver disease [NAFLD] and alcohol related liver disease [ARLD] are the principal causes of ESLD due to cirrhosis in Sri Lanka. Liver transplantation remains the only curative treatment for such patients. Multiorgan dysfunction and hemodynamic instability characteristic of ESLD adds to the complexity of perioperative care in liver transplantation. Maintenance of stable hemodynamics including optimal hemostasis forms the core of the anaesthetic strategy in liver transplantation.Item Non-alcoholic fatty liver disease in the South Asian Region: A systematic review and meta-analysis(Faculty of Medicine, University of Kelaniya, Sri Lanka, 2021) Withanage, M.Y; Niriella, M.A.; Ediriweera, D.; de Silva, S.T.; de Silva, A.P.; de Silva, H.J.Introduction: Non-alcoholic fatty liver disease (NAFLD) is the commonest chronic liver disease worldwide. Objectives: We estimated the overall prevalence and effect sizes of associations for NAFLD among adults in South Asia. Methods: We searched for search terms “Prevalence of NAFLD (Non-Alcoholic Fatty Liver Disease)” AND “South Asia” AND individual South Asian countries from January 2004-May 2021 in PubMed database. Strict eligibility criteria were applied. Gender, urban or rural setting, general population and individuals with metabolic diseases stratified analysis. A random-effects meta-analysis was performed. Results: Out of 158 studies, selected 25 studies from five countries (Bangladesh, India, Nepal, Pakistan and Sri Lanka) were included with 15,758 participants, of whom 4703 had NAFLD. The pooled NAFLD prevalence was 40.5% [95% CI 33.7-47.5] in overall, 26.2% [95% CI 18.7-4.4] in general population, 21.9% [95% CI 14.4-30.5] in rural communities, 32.9% [95% CI 22.8-43.8] in urban communities, 54% [95% CI 46.4-61.5] in individuals with one or more metabolic abnormalities and 11.1% [95% CI 7.1-16] among non-obese population. 41.4% of NAFLD patients were non-obese. Gender specific prevalence was similar. Prevalence of NAFLD among individuals with metabolic disease was significantly higher than the general population (p<0.0001). A significant association with NAFLD was found for metabolic syndrome, general obesity, central obesity, diabetes mellitus, dysglycemia, dyslipidemia and hypertension. Conclusions: The overall prevalence of NAFLD among adults in South Asia is high, especially in urban populations and those with metabolic abnormalities. Targeted health¬strategies should be implemented in the region to address this.Item Unequal distribution of liver fat warrants careful selection of biopsy site during donor assessment(Sri Lanka Medical Association, 2017) Siriwardana, R.C.; Sivasundarama, T.; Tillakaratne, M.S.B.; Paranahewa, L.INTRODUCTION & OBJECTIVES: Non-alcoholic fatty liver disease (NAFLD) is a major health concern. Liver fat deposition seems to have a segmental variation. This can affect invasive, and non-invasive detection of NAFLD. The present study evaluates the pattern of fat distribution of the liver using liver computed tomogram (CT) attenuation index. METHODS: Two radiologists evaluated 517 non-contrast CT abdomen and pelvis images. Two 40mm2 regions of interest (ROIs) were selected from each segment. The hepatic segmental densities were obtained by calculating the mean densities of areas of corresponding liver segments. The mean hepatic attenuation (MHA) was quantified by obtaining the mean segmental densities. Densities were compared among segments and with the MHA. RESULTS: The median age was 58 years (min-max: 9-88; IQR: 45-67) and 276 (53.4 %) were males. The overall median hepatic density (i.e. grand median) was 53.05 (95% CI 52.95-53.15) Hounsfield units (HU). Lowest median density was observed in segment IVb, significantly lower compared with other segments (p<0.05). Highest median segmental density was observed in segment V compared to other segments (p<0.05). Segments V, VI and VIII had higher median densities compared with grand median hepatic density (i.e. 53.05; whereas median densities of segments II, III and VII were not significantly different from the grand median. CONCLUSION: Liver biopsy taken from segments II, III and VII are likely to be the most representative of overall fat deposition.