Visceral Fat Thickness of Erosive and Non-Erosive Reflux Disease Subjects
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Diabetes & Metabolic Syndrome: Clinical Research & Reviews 13 (2019) 1929e1933 Contents lists available at ScienceDirect Diabetes & Metabolic Syndrome: Clinical Research & Reviews journal homepage: www.elsevier.com/locate/dsx Original Article Visceral fat thickness of erosive and non-erosive reflux disease subjects in Indonesia's tertiary referral hospital * Rezky Aulia Nurleili a, Dyah Purnamasari b, , Marcellus Simadibrata c, Andhika Rachman d, Dicky Levenus Tahapary b, Rino Alvani Gani e a Department of Internal Medicine, Cipto Mangunkusumo General Hospital, Faculty of Medicine Universitas Indonesia, Jakarta, Indonesia b Division of Metabolism and Endocrinology, Department of Internal Medicine, Cipto Mangunkusumo General Hospital, Faculty of Medicine Universitas Indonesia, Jakarta, Indonesia c Division of Gastroenterology, Department of Internal Medicine, Cipto Mangunkusumo General Hospital, Faculty of Medicine Universitas Indonesia, Jakarta, Indonesia d Division of Hematology and Medical Oncology, Department of Internal Medicine, Cipto Mangunkusumo General Hospital, Faculty of Medicine Universitas Indonesia, Jakarta, Indonesia e Division of Hepatology, Departement of Internal Medicine, Faculty of Medicine, Universitas of Indonesia, Cipto Mangunkusumo General Hospital, Jakarta, Indonesia article info abstract Article history: Background: There has been an increasing number of reports regarding the correlation between obesity Received 19 March 2019 and gastroesophageal reflux disease (GERD). Visceral fat thickness is thought to be a risk factor for GERD Accepted 16 April 2019 and its severity. Several studies have conflicting results, so this study aimed to determine visceral fat thickness difference between erosive and non-erosive reflux disease. Keywords: Methods: A cross-sectional study of 56 adult subjects with GERD symptoms was held at Cipto Man- Visceral fat thickness gunkusumo National General Hospital between April and November 2018. Gastroesophageal Reflux GERD Disease Questionnaires (GERDQ) were utilized to determine the presence of GERD. Ultrasonography was Erosive esophagitis used to determine visceral fat thickness. Esophageal erosions were diagnosed using upper gastrointes- tinal endoscopy. The difference in visceral fat thickness between esophagitis and non-esophagitis group was analysed using T-test. Results: From 56 total subjects, 55.4% have erosive reflux disease (ERD), in which were dominated by subjects with grade A esophagitis (64.5%) based on Los Angeles Classification of Esophagitis (LA classi- fications). There was no significant difference of visceral fat thickness between non-erosive reflux disease (NERD) and ERD (p ¼ 0,831). There was, however, an increasing trend of visceral fat thickness with the advancing severity of esophagitis, although statistical significance was not reached. Conclusion: Visceral fat thickness as measured by ultrasonography has no significant difference between NERD and ERD. © 2019 Diabetes India. Published by Elsevier Ltd. All rights reserved. 1. Introduction gastrointestinal endoscopy had esophagitis [2]. GERD's primary manifestation is typical complaint of “heart- The prevalence of gastroesophageal reflux disease (GERD) is burn” [2,3], and diagnosis is made based on GERDQ [4]. GERD is increasing globally. From one systematic review we found that classified to non-erosive reflux disease, erosive reflux disease, and there is an increasing prevalence between studies held before 1995 Barret's esophagus. This classification describes gradient of severity and after [1]. An observational study conducted by Syam et al. in by findings on endoscopy. Many researches mainly from western Indonesia showed that 22,7% subjects who underwent upper countries have proven that obesity particularly abdominal obesity increase the risk of GERD and esophageal adenocarcinoma [5]. The mechanism is not fully understood. Obesity is initially thought to * Corresponding author. Endocrinology and Metabolism Consultant, Division of play a role in GERD by increasing the intragastric pressure and Metabolism and Endocrinology, Department of Internal Medicine, Cipto Man- gastroesophageal pressure gradients, a similar mechanism found in gunkusumo General Hospital, Faculty of Medicine Universitas Indonesia, Jakarta, pregnancy. However, there have been many other theories pro- Indonesia. E-mail address: [email protected] (D. Purnamasari). posed in addition to mechanical factors; humoral factors such as https://doi.org/10.1016/j.dsx.2019.04.025 1871-4021/© 2019 Diabetes India. Published by Elsevier Ltd. All rights reserved. 1930 R.A. Nurleili et al. / Diabetes & Metabolic Syndrome: Clinical Research & Reviews 13 (2019) 1929e1933 adipocytokines and other proinflammatory cytokines are thought blood pressure, body mass index, and waist circumference, to play important role in the occurrence of GERD and its severity in abdominal ultrasonography examination, dan esophagogas- obesity [6]. troduodenal endoscopy. The visceral fat thickness was measured In Asia, this subject has been studied and the results are still using ultrasonography, and defined by the distance between pos- conflicting. A study regarding BMI and GERD in Japan showed that terior surface of rectus abdominis muscle and anterior surface of the prevalence of GERD was significantly higher in obese subjects aorta [12]. After 8 h fasting, the subject was placed on a flat bed and [7]. A study by Chung et al. in South Korea reported that suffering requested to be relax. The examination was performed by experi- from the metabolic syndrome significantly increased the risk of enced medical staff using 3e5 MHz convex transducer placed GERD and the severity of esophagitis reflux [8]. In Japan, a study without pressure at 1e5 cm above umbilical scar, and the mea- conducted by Niigaki et al. in health screening subjects, showed surement was taken at the end of expiration to eliminate pressure that waist circumference as a parameter of visceral fat accumula- of the abdomen. The subjects underwent endoscopy for upper tion was associated with an increased risk of GERD and significant gastrointestinal tract which was performed by our experienced esophagitis reflux when compared to other parameters such as staff at our endoscopy center. Esophagitis was defined as mucosal dyslipidemia, hypertension, and hyperglycemia [9]. Nam et al. break according to Los Angeles Classification of esophagitis [13]. specifically measure the visceral adipose tissue volume in Korean subjects, and found that visceral fat tissue is associated with an 2.3. Statistical analysis increased risk of erosive esophagitis [10]. But study from Japan by © Gunji et al. did not achieve a significance between visceral fat and Data tabulation used the Microsoft Excel 2010 program. erosive esophagitis. In Indonesia, study from Budiyani et al. have Nominal data were presented in percentage. Normally distributed found that insulin resistance is significantly corelated with risk of numerical data presented as mean (standard deviation), while not erosive esophagitis [11]. Therefore, this study is aimed to determine normally distributed one presented as median (min, max). Bivariate the relationship between central obesity measured by visceral fat analysis was carried out to assess the relationship between visceral thickness and the risk of erosive esophagitis in GERD subjects. fat thickness and the severity of GERD using unpaired T-test. 2. Methods 3. Results 2.1. Study subjects This study involved 56 patients with GERD. The demographic and anthropometric characteristics of the research participants can This is a cross sectional study involving 56 subjects with GERD be seen in Table 1. symptoms, conducted from April to November 2018 at Cipto Man- More than half of the subjects of this study suffered from erosive gunkusumo National General Hospital in Jakarta, Indonesia. The in- reflux disease (55.4%), in which was dominated by the severity of clusion criteria were: patients aged above 18 years old and suffering class A esophagitis based on the Los Angeles Classification, affecting from GERD diagnosed through GERD questionnaires (GERDQ score 8 as many as 64,5% of all ERD patients. Male participants were more and above). Patients were excluded if; 1) refused to participate in likely to experience ERD (64,3%) when compared to female par- research, 2) were known to be pregnant or using hormonal drugs ticipants (52,4%). In the age group less than 50 years old, the pro- (such as contraceptive pills), 3) were known to have esophageal portion between NERD and ERD was balanced out but in the older malignancies or other structural abnormalities of the esophagus, 4) group there was an increase in the proportion of ERD (60.7% for ERD have ascites or intra-abdominal tumors, 5) long term use of proton vs 39.3% for NERD) (Table 2). pump inhibitors or H2 receptor antagonists, 6) long term use of The distribution data of visceral fat were normal, so an inde- aspirin or non-steroidal anti-inflammatory drugs (NSAIDs). Subjects pendent T-test was performed to determine the mean difference were asked for their willingness to take part in this study and filled between the two groups and its significance (Table 3). consent form. Ethical clearance was obtained from The Ethics Furthermore, we found that there was a trend of increasing Committee of the Faculty of Medicine, University of Indonesia. visceral fat thickness toward the greater severity of esophagitis (Table 4). 2.2. Measurements 4. Discussions Subjects who met the research criteria were explained