Weight loss induced alleviation of sleep-disordered breathing is associated with improvement of non-alcoholic fatty liver disease

Stadler, S. and Mohr, A. and Wagner, A. and Baessler, A. and Fischer, M. and Putz, F. J. and Strack, C. and Li, J. and Arzt, M. (2023) Weight loss induced alleviation of sleep-disordered breathing is associated with improvement of non-alcoholic fatty liver disease. SLEEP MEDICINE, 112. pp. 159-164. ISSN 1389-9457, 1878-5506

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Abstract

Introduction: Sleep-disordered breathing (SDB) and non-alcoholic fatty liver disease (NAFLD) are both common comorbidities in obese patients. Structured weight loss programs are effective and can reduce the incidence and severity of obesity-related comorbidities. The objective of the present analysis is to test whether weight loss induced alleviation of SDB is a predictor for improvement of NAFLD.Methods: Obese participants underwent a standardized non-surgical 3 months weight reduction program (800 kilocalories per day with low carbohydrate and fat content). Abdominal sonography for NAFLD (grade 0 to 3) and monitoring for SDB (defined as apnea-hypopnea index [AHI] >= 15/h) were performed at baseline and after 3 months. Alleviation of SDB was defined as a shift from AHI >= 15/h to <15/h.Results: 48 patients (48% female, age 42 +/- 12 years, body-mass index 40.3 +/- 8.1 kg/m(2), AHI 14 +/- 17/h, 85% NAFLD grade >= 1) participated in the weight loss program. In contrast to the no SDB group, in patients with SDB weight loss of 27.1 +/- 0 .9 kg (8.4 +/- 2.8 kg/m(2)) after three months was paralleled by a reduction in AHI (-22 +/- 17/h), prevalence of SDB (from 31% to 13%), and oxidized low-density lipoprotein (-13 +/- 11 U/l). In individuals with preexisting SDB NAFLD grade improved more (2 versus 1, p<0.001) and was at a lower degree at 3 months than in those without SDB (0 versus 1, p = 0.015). In multivariable analysis models, SDB at baseline was associated with improvement of NAFLD grade (B 0.908; 95% CI 0.125, 1.691; p = 0.024), independently of age, sex, and BMI (each p>0.05, respectively). Decreasing BMI (B 0.16 [95%-CI 0.08; 0.23], p<0.001) and alleviation of SDB (B 0.90 [95%-CI 0.21; 1.58], p = 0.012) were independently associated with improvement of NAFLD grade.Conclusion: Preexisting SDB and weight loss induced alleviation of SDB are predictors for improvement in NAFLD grade, independent of the extent of weight loss. SDB may contribute to the pathogenesis of NAFLD via SDB-induced oxidative stress and inflammation, but the causal mechanism remains unclear.

Item Type: Article
Uncontrolled Keywords: SERUM AMINOTRANSFERASE LEVELS; APNEA; STEATOHEPATITIS; APNEALINK(TM); STEATOSIS; SELECTION; HEPATITIS; DIET; Sleep -disordered breathing; Non-alcoholic fatty liver disease; Weight loss
Subjects: 600 Technology > 610 Medical sciences Medicine
Divisions: Medicine > Lehrstuhl für Herz-, Thorax- und herznahe Gefäßchirurgie
Medicine > Lehrstuhl für Innere Medizin II
Medicine > Abteilung für Nephrologie
Depositing User: Dr. Gernot Deinzer
Date Deposited: 30 Jan 2024 09:58
Last Modified: 30 Jan 2024 09:58
URI: https://pred.uni-regensburg.de/id/eprint/59178

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