1
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Cuthbertson DJ, Keating SE, Pugh CJA, Owen PJ, Kemp GJ, Umpleby M, Geyer NG, Chinchilli VM, Stine JG. Exercise improves surrogate measures of liver histological response in metabolic dysfunction-associated steatotic liver disease. Liver Int 2024. [PMID: 38847589 DOI: 10.1111/liv.15947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 04/06/2024] [Accepted: 04/10/2024] [Indexed: 06/12/2024]
Abstract
BACKGROUND AND AIMS Exercise is recommended for the management of metabolic dysfunction-associated steatotic liver disease (MASLD), yet effects on liver histology remain unknown, especially without significant weight loss. We aimed to examine changes in surrogate measures of liver histological response with exercise training. METHODS We conducted a post hoc pooled analysis of three randomised controlled trials (duration: 12-20 weeks) comparing aerobic exercise interventions with controls. The primary outcome measure was a ≥30% relative reduction in (MRI-measured) liver fat, as a surrogate measure of liver histological response (the threshold necessary for fibrosis improvement). Secondary outcome measures were changes in other biomarkers of liver fibrosis, anthropometry, body composition and aerobic fitness. RESULTS Eighty-eight adults (exercise: 54, control: 34; male: 67%) were included with mean (SD) age 51 (11) years and body mass index 33.3 (5.2) kg/m2. Following the intervention, exercise had ~5-fold (OR [95%CI]: 4.86 [1.72, 13.8], p = .002) greater odds of ≥30% relative reduction in MRI-measured liver fat compared with control. This paralleled the improvements in anthropometry (waist and hip circumference reduction), body composition (body fat, visceral and subcutaneous adipose tissue) and aerobic fitness (V̇O2peak, ventilatory threshold and exercise capacity). Importantly, these effects were independent of clinically significant body weight loss (<3% body weight). CONCLUSION Exercise training led to clinically meaningful improvements in surrogate serum- and imaging-based measures of liver histological change, without clinically meaningful body weight reduction. These data reinforce the weight-neutral benefit of exercise training and suggest that aerobic training may improve liver fibrosis in patients with MASLD.
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Affiliation(s)
- Daniel J Cuthbertson
- Department of Cardiovascular and Metabolic Medicine, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
- Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - Shelley E Keating
- School of Human Movement and Nutrition Sciences, The University of Queensland, St Lucia, Queensland, Australia
| | - Christopher J A Pugh
- School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, UK
- Centre for Health, Activity and Wellbeing Research, Cardiff Metropolitan University, Cardiff, UK
| | - Patrick J Owen
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
| | - Graham J Kemp
- Department of Musculoskeletal and Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
| | - Margot Umpleby
- Diabetes and Metabolic Medicine, University of Surrey, Guildford, UK
| | - Nathaniel G Geyer
- Department of Public Health Sciences, Penn State Health Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
| | - Vernon M Chinchilli
- Department of Public Health Sciences, Penn State Health Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
| | - Jonathan G Stine
- Department of Public Health Sciences, Penn State Health Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
- Division of Gastroenterology and Hepatology, Department of Medicine, Penn State Health Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
- Liver Center, Penn State Health Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
- Cancer Institute, Penn State Health Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
- Fatty Liver Program, Penn State Health Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
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2
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Xue Y, Peng Y, Zhang L, Ba Y, Jin G, Liu G. Effect of different exercise modalities on nonalcoholic fatty liver disease: a systematic review and network meta-analysis. Sci Rep 2024; 14:6212. [PMID: 38485714 PMCID: PMC10940706 DOI: 10.1038/s41598-024-51470-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 01/05/2024] [Indexed: 03/18/2024] Open
Abstract
Physical exercise intervention can significantly improve the liver of patients with Non-alcoholic fatty liver disease (NAFLD), but it is unknown which exercise mode has the best effect on liver improvement in NAFLD patients. Therefore, we systematically evaluated the effect of exercise therapy on liver and blood index function of NAFLD patients through network meta-analysis (NMA). Through systematic retrieval of PubMed, Cochrane Library, Web of Science, EBSCO, and CNKI (National Knowledge Infrastructure), two reviewers independently screened the literature, extracted data, and assessed the risk of bias of the included studies by means of databases from inception to January 2023. The NMA was performed using the inconsistency model. A total of 43 studies, 2070 NAFLD patients were included: aerobic training (n = 779), resistance training (n = 159), high-intensity interval training (n = 160), aerobic training + resistance training (n = 96). The results indicate that aerobic training + resistance training could significantly improve serum total cholesterol (TC) (Surface under the cumulative ranking curve (SUCRA) = 71.7), triglyceride (TG) (SUCRA = 96.8), low-density lipoprotein cholesterol (LDL-C) (SUCRA = 86.1) in patients with NAFLD including triglycerides. Aerobic training is the best mode to improve ALT (SUCRA = 83.9) and high-density lipoprotein cholesterol (HDL-C) (SUCRA = 72.3). Resistance training is the best mode to improve aspartate transaminase (AST) (SUCRA = 81.7). Taking various benefits into account, we believe that the best modality of exercise for NAFLD patients is aerobic training + resistance training. In our current network meta-analysis, these exercise methods have different effects on the six indicators of NAFLD, which provides some reference for further formulating exercise prescription for NAFLD patients.
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Affiliation(s)
- Yaqi Xue
- Beijing Normal University College of Physical Education and Sport, Beijing, China
| | - Yang Peng
- Physical Education Department, Northeastern University, Shenyang, Liaoning, China
| | | | - Yi Ba
- Beijing Normal University College of Physical Education and Sport, Beijing, China
| | - Gang Jin
- Physical Education Department, Northeastern University, Shenyang, Liaoning, China
| | - Ge Liu
- School of Economics and Management, Hebei University of Architecture, Hebei, China.
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3
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Harris SJ, Smith N, Hummer B, Schreibman IR, Faust AJ, Geyer NR, Chinchilli VM, Sciamanna C, Loomba R, Stine JG. Exercise training improves serum biomarkers of liver fibroinflammation in patients with metabolic dysfunction-associated steatohepatitis. Liver Int 2024; 44:532-540. [PMID: 38014619 PMCID: PMC10844956 DOI: 10.1111/liv.15769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/04/2023] [Accepted: 10/08/2023] [Indexed: 11/29/2023]
Abstract
BACKGROUND AND AIMS Exercise training is recommended for all patients with metabolic dysfunction-associated steatotic liver disease and may reverse liver fibrosis. Whether exercise training improves liver fibrosis without body weight loss remains controversial. We further investigated this relationship using serum biomarkers of liver fibroinflammation in a post hoc analysis of an exercise trial where patients did not lose significant body weight. METHODS In the NASHFit trial, patients with metabolic dysfunction-associated steatohepatitis were randomized to receive either moderate-intensity aerobic exercise training or standard clinical care for 20 weeks. Mediterranean-informed dietary counselling was provided to each group. Change in serum biomarkers was measured and compared between the two groups. RESULTS Exercise training led to improvement in serum biomarkers of liver fibroinflammation, including (1) ≥17 IU/L reduction in alanine aminotransferase (ALT) in 53% of individuals in the exercise training group compared to 13% in the standard clinical care group (p < 0.001; mean reduction 24% vs. 10% respectively) and (2) improvement in CK18 (-61 vs. +71 ng/mL, p = 0.040). ALT improvement ≥17 IU/L was correlated with ≥30% relative reduction in magnetic resonance imaging-measured liver fat and PNPLA3 genotype. CONCLUSION Exercise training improves multiple serum biomarkers of liver fibroinflammation at clinically significant thresholds of response without body weight loss. This study provides further evidence that exercise training should be viewed as a weight-neutral intervention for which response to intervention can be readily monitored with widely available non-invasive biomarkers that can be applied at the population level.
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Affiliation(s)
- Sara J. Harris
- College of Medicine, The Pennsylvania State University,
Hershey PA
| | - Nataliya Smith
- Division of Gastroenterology and Hepatology, Department of
Medicine, Penn State Health- Milton S. Hershey Medical Center, Hershey PA
- Fatty Liver Program, Penn State Health- Milton S. Hershey
Medical Center, Hershey PA
| | - Breianna Hummer
- Division of Gastroenterology and Hepatology, Department of
Medicine, Penn State Health- Milton S. Hershey Medical Center, Hershey PA
- Fatty Liver Program, Penn State Health- Milton S. Hershey
Medical Center, Hershey PA
| | - Ian R. Schreibman
- Division of Gastroenterology and Hepatology, Department of
Medicine, Penn State Health- Milton S. Hershey Medical Center, Hershey PA
- Fatty Liver Program, Penn State Health- Milton S. Hershey
Medical Center, Hershey PA
- Liver Center, Penn State Health- Milton S. Hershey Medical
Center, Hershey PA
| | - Alison J. Faust
- Division of Gastroenterology and Hepatology, Department of
Medicine, Penn State Health- Milton S. Hershey Medical Center, Hershey PA
- Fatty Liver Program, Penn State Health- Milton S. Hershey
Medical Center, Hershey PA
- Liver Center, Penn State Health- Milton S. Hershey Medical
Center, Hershey PA
| | - Nathaniel R. Geyer
- Department of Public Health Sciences, The Pennsylvania
State University- College of Medicine, Hershey PA
| | - Vernon M. Chinchilli
- Department of Public Health Sciences, The Pennsylvania
State University- College of Medicine, Hershey PA
| | - Chris Sciamanna
- College of Medicine, The Pennsylvania State University,
Hershey PA
| | - Rohit Loomba
- Division of Gastroenterology and Hepatology, Department of
Medicine, University of California San Diego, San Diego CA
- NAFLD Research Center, University of California San Diego,
San Diego CA
| | - Jonathan G. Stine
- Division of Gastroenterology and Hepatology, Department of
Medicine, Penn State Health- Milton S. Hershey Medical Center, Hershey PA
- Fatty Liver Program, Penn State Health- Milton S. Hershey
Medical Center, Hershey PA
- Liver Center, Penn State Health- Milton S. Hershey Medical
Center, Hershey PA
- Department of Public Health Sciences, The Pennsylvania
State University- College of Medicine, Hershey PA
- Cancer Institute, Penn State Health- Milton S. Hershey
Medical Center, Hershey PA
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4
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Stine JG, Romeo S. Sweating it out: How physical activity can combat high genetic risk for nonalcoholic fatty liver disease. Liver Int 2023; 43:1623-1625. [PMID: 37452506 PMCID: PMC10542965 DOI: 10.1111/liv.15642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 05/31/2023] [Indexed: 07/18/2023]
Affiliation(s)
- Jonathan G. Stine
- Division of Gastroenterology and Hepatology, Department of Medicine, Penn State Health-Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
- Fatty Liver Program, Penn State Health-Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
- Liver Center, Penn State Health-Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
- Department of Public Health Sciences, The Pennsylvania State University-College of Medicine, Hershey, Pennsylvania, USA
- Cancer Institute, Penn State Health-Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
| | - Stefano Romeo
- Department of Molecular and Clinical Medicine, University of Gothenburg, Gothenburg, Sweden
- Cardiology Department, Sahlgrenska University Hospital, Gothenburg, Sweden
- Unit of Clinical Nutrition, University Magna Graecia, Catanzaro, Italy
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5
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Dahmus J, Hummer B, Rivas G, Schmitz K, Caldwell SH, Argo CK, Schreibman I, Stine JG. Patients with Nonalcoholic Steatohepatitis and Advanced Liver Disease Have the Lowest Cardiorespiratory Fitness. Dig Dis Sci 2023; 68:2695-2703. [PMID: 36692803 PMCID: PMC10566537 DOI: 10.1007/s10620-022-07809-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 12/20/2022] [Indexed: 01/25/2023]
Abstract
BACKGROUND & AIMS Cardiorespiratory fitness and liver fibrosis are independently associated with poor outcomes in patients with nonalcoholic steatohepatitis (NASH), however, conflicting reports exist about their relationship. We aimed to better characterize the relationship between cardiorespiratory fitness and liver histology in a cross-sectional study of patients with biopsy-proven NASH. METHODS Participants aged 18-75 years completed VO2peak fitness assessment using symptom-limited graded exercise testing. Participants were compared by liver fibrosis stage and NAFLD Activity Score (NAS). Multivariable models were constructed to assess factors related to relative VO2peak, including liver fibrosis and NAS. RESULTS Thirty-five participants with mean age 48 ± 12 years and body mass index 33.5 ± 7.6 kg/m2 were enrolled. Seventy-four percent of participants were female and 49% had diabetes. A dose-dependent relationship was found between relative VO2peak and liver fibrosis. Relative VO2peak was significantly lower in participants with advanced fibrosis (F3 disease- 15.7 ± 5.3 vs. ≤ F2 disease- 20.7 ± 5.9 mL/kg/min, p = 0.027). NAS > 5 was also associated with lower relative VO2peak (22.6 ± 5.7 vs. 16.5 ± 5.1 mL/kg/min, p = 0.012) compared to NAS ≤ 5. With multivariable modeling, advanced fibrosis remained independently predictive of relative VO2peak while NAS trended towards significance. DISCUSSION AND CONCLUSIONS Advanced liver fibrosis is independently associated with cardiorespiratory fitness in patients with NASH. This may explain the incremental increase in mortality as liver fibrosis stage increases. Further research is needed to determine if exercise training can improve cardiorespiratory fitness across multiple stages of liver fibrosis and directly reduce morbidity and mortality in patients with NASH.
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Affiliation(s)
- Jessica Dahmus
- Division of Gastroenterology & Hepatology, Department of Medicine, The Pennsylvania State University - Milton S. Hershey Medical Center, 500 University Drive, Hershey, PA, 17033, USA
| | - Breianna Hummer
- Division of Gastroenterology & Hepatology, Department of Medicine, The Pennsylvania State University - Milton S. Hershey Medical Center, 500 University Drive, Hershey, PA, 17033, USA
| | - Gloriany Rivas
- Division of Gastroenterology & Hepatology, Department of Medicine, The Pennsylvania State University - Milton S. Hershey Medical Center, 500 University Drive, Hershey, PA, 17033, USA
| | - Kathryn Schmitz
- Department of Public Health Sciences, The Pennsylvania State University - Milton S. Hershey Medical Center, Hershey, PA, USA
- Cancer Institute, The Pennsylvania State University - Milton S. Hershey Medical Center, Hershey, PA, USA
- Department of Kinesiology, The Pennsylvania State University - College of Medicine, Hershey, PA, USA
- Department of Physical Medicine & Rehabilitation, The Pennsylvania State University - Milton S. Hershey Medical Center, Hershey, PA, USA
| | - Stephen H Caldwell
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Virginia, Charlottesville, VA, USA
| | - Curtis K Argo
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Virginia, Charlottesville, VA, USA
| | - Ian Schreibman
- Division of Gastroenterology & Hepatology, Department of Medicine, The Pennsylvania State University - Milton S. Hershey Medical Center, 500 University Drive, Hershey, PA, 17033, USA
- Liver Center, The Pennsylvania State University - Milton S. Hershey Medical Center, Hershey, PA, USA
| | - Jonathan G Stine
- Division of Gastroenterology & Hepatology, Department of Medicine, The Pennsylvania State University - Milton S. Hershey Medical Center, 500 University Drive, Hershey, PA, 17033, USA.
- Department of Public Health Sciences, The Pennsylvania State University - Milton S. Hershey Medical Center, Hershey, PA, USA.
- Cancer Institute, The Pennsylvania State University - Milton S. Hershey Medical Center, Hershey, PA, USA.
- Liver Center, The Pennsylvania State University - Milton S. Hershey Medical Center, Hershey, PA, USA.
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6
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Stine JG, Welles JE, Keating S, Hussaini Z, Soriano C, Heinle JW, Geyer N, Chinchilli VM, Loomba R, Kimball SR. Serum Fibroblast Growth Factor 21 Is Markedly Decreased following Exercise Training in Patients with Biopsy-Proven Nonalcoholic Steatohepatitis. Nutrients 2023; 15:1481. [PMID: 36986211 PMCID: PMC10056327 DOI: 10.3390/nu15061481] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/11/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023] Open
Abstract
BACKGROUND AND AIMS Exercise remains a key component of nonalcoholic fatty liver disease (NAFLD) treatment. However, mechanisms underpinning the improvements in NAFLD seen with exercise are unclear. Exercise improved liver fat and serum biomarkers of liver fibrosis in the NASHFit trial. We investigated exercise's mechanism of benefit by conducting a post hoc analysis of these data to determine the relationship between serum fibroblast growth factor (FGF) 21, which is implicated in NAFLD development, and exercise. METHODS In the 20 wk NASHFit trial, patients with nonalcoholic steatohepatitis (NASH) were randomized to receive moderate-intensity aerobic exercise training or standard clinical care. Mediterranean-informed dietary counseling was provided to each group. Change in serum FGF21 was measured after an overnight fast. RESULTS There was a significant improvement in serum FGF21 with exercise training compared to standard clinical care (p = 0.037) with serum FGF21 reducing by 22% (-243.4 +/-349 ng/mL) with exercise vs. a 34% increase (+88.4 ng/mL +/-350.3 ng/mL) with standard clinical care. There was a large inverse association between change in serum FGF21 and change in cardiorespiratory fitness (VO2peak) (r = -0.62, 95% CI -0.88 to -0.05, p = 0.031), and on multivariable analysis, change in VO2peak remained independently associated with change in FGF21 (β = -44.5, 95% CI -83.8 to -5.11, p = 0.031). CONCLUSIONS Serum FGF21 is markedly decreased in response to aerobic exercise training, offering a novel mechanism to explain the observed reduction in liver fat and improvement in serum biomarkers of liver fibrosis in patients with NASH who do exercise.
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Affiliation(s)
- Jonathan G. Stine
- Division of Gastroenterology and Hepatology, Department of Medicine, Penn State Health Milton S. Hershey Medical Center, Hershey, PA 17033, USA
- Department of Public Health Sciences, College of Medicine, The Pennsylvania State University, Hershey, PA 17033, USA
- Liver Center, Penn State Health Milton S. Hershey Medical Center, Hershey, PA 17033, USA
- Cancer Institute, Penn State Health Milton S. Hershey Medical Center, Hershey, PA 17033, USA
| | - Jaclyn E. Welles
- Department of Cellular and Molecular Physiology, College of Medicine, The Pennsylvania State University, Hershey, PA 17033, USA
| | - Shelley Keating
- School of Human Movement and Nutrition Sciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Zeba Hussaini
- Division of Gastroenterology and Hepatology, Department of Medicine, Penn State Health Milton S. Hershey Medical Center, Hershey, PA 17033, USA
| | - Christopher Soriano
- Division of Gastroenterology and Hepatology, Department of Medicine, Penn State Health Milton S. Hershey Medical Center, Hershey, PA 17033, USA
| | - J. Wes Heinle
- Division of Gastroenterology and Hepatology, Department of Medicine, Penn State Health Milton S. Hershey Medical Center, Hershey, PA 17033, USA
| | - Nathaniel Geyer
- Department of Public Health Sciences, College of Medicine, The Pennsylvania State University, Hershey, PA 17033, USA
| | - Vernon M. Chinchilli
- Department of Public Health Sciences, College of Medicine, The Pennsylvania State University, Hershey, PA 17033, USA
| | - Rohit Loomba
- Division of Gastroenterology and Hepatology, Department of Medicine, University of California San Diego, San Diego, CA 92093, USA
- NAFLD Research Center, University of California San Diego, San Diego, CA 92093, USA
| | - Scot R. Kimball
- Department of Cellular and Molecular Physiology, College of Medicine, The Pennsylvania State University, Hershey, PA 17033, USA
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7
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Stine JG, Schreibman IR, Faust AJ, Dahmus J, Stern B, Soriano C, Rivas G, Hummer B, Kimball SR, Geyer NR, Chinchilli VM, Loomba R, Schmitz K, Sciamanna C, Strine C, Wentzel R, Marlin S, Sica C, Vesek J, Eyster E, Sinoway L, Bentz K, Handley N, Hershey Fell B, Mottilla S, Christ C, George S, Novchich T, Beyer M, Clarke K, Myers T, Glading‐Steinruck M, Krok K, Ma T, Riley T, Thompson E, Tressler H, Broach J, Doan T, Patrick S, Reed S, Hamilton C, Slavoski K, Tregea D. NASHFit: A randomized controlled trial of an exercise training program to reduce clotting risk in patients with NASH. Hepatology 2022; 76:172-185. [PMID: 34890063 PMCID: PMC9184303 DOI: 10.1002/hep.32274] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 11/04/2021] [Accepted: 12/01/2021] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND AIMS NASH is a common disease associated with increased rates of thromboembolism (TE). Although exercise training can lessen thrombotic risk in patients with vascular disease, whether similar findings are observed in patients with NASH is open for study. APPROACH AND RESULTS We conducted a 20-week randomized controlled clinical trial involving patients with biopsy-confirmed NASH. Patients were randomly assigned (2:1 ratio) to receive either an exercise training program or standard clinical care. The primary endpoint was change in plasminogen activator inhibitor 1 (PAI-1) level, an established thrombotic biomarker. Twenty-eight patients were randomly assigned (18 exercise training and 10 standard clinical care). PAI-1 level was significantly decreased by exercise training when compared to standard clinical care (-40 ± 100 vs. +70 ± 63 ng/ml; p = 0.02). Exercise training decreased MRI proton density fat fraction (MRI-PDFF; -4.7 ± 5.6 vs. 1.2 ± 2.8% absolute liver fat; p = 0.01); 40% of exercise subjects had a ≥30% relative reduction in MRI-PDFF (histological response threshold) compared to 13% for standard of care (p < 0.01). Exercise training improved fitness (VO2 peak, +3.0 ± 5.6 vs. -1.8 ± 5.1 ml/kg/min; p = 0.05) in comparison to standard clinical care. CONCLUSIONS This clinical trial showed that, independent of weight loss or dietary change, exercise training resulted in a significantly greater decrease in thrombotic risk than standard clinical care in patients with NASH, in parallel with MRI-PDFF reduction and improvement in fitness. Future studies are required to determine whether exercise training can directly impact patient outcomes and lower rates of TE.
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Affiliation(s)
- Jonathan G. Stine
- Division of Gastroenterology and Hepatology, Department of
Medicine, The Pennsylvania State University- Milton S. Hershey Medical Center,
Hershey PA,Department of Public Health Sciences, The Pennsylvania
State University- College of Medicine, Hershey PA,Liver Center, The Pennsylvania State University- Milton S.
Hershey Medical Center, Hershey PA,Cancer Institute, The Pennsylvania State University-
Milton S. Hershey Medical Center, Hershey PA
| | - Ian R. Schreibman
- Division of Gastroenterology and Hepatology, Department of
Medicine, The Pennsylvania State University- Milton S. Hershey Medical Center,
Hershey PA,Liver Center, The Pennsylvania State University- Milton S.
Hershey Medical Center, Hershey PA
| | - Alison J. Faust
- Division of Gastroenterology and Hepatology, Department of
Medicine, The Pennsylvania State University- Milton S. Hershey Medical Center,
Hershey PA
| | - Jessica Dahmus
- Division of Gastroenterology and Hepatology, Department of
Medicine, The Pennsylvania State University- Milton S. Hershey Medical Center,
Hershey PA
| | - Benjamin Stern
- Division of Gastroenterology and Hepatology, Department of
Medicine, The Pennsylvania State University- Milton S. Hershey Medical Center,
Hershey PA
| | - Christopher Soriano
- Division of Gastroenterology and Hepatology, Department of
Medicine, The Pennsylvania State University- Milton S. Hershey Medical Center,
Hershey PA
| | - Gloriany Rivas
- Division of Gastroenterology and Hepatology, Department of
Medicine, The Pennsylvania State University- Milton S. Hershey Medical Center,
Hershey PA
| | - Breianna Hummer
- Division of Gastroenterology and Hepatology, Department of
Medicine, The Pennsylvania State University- Milton S. Hershey Medical Center,
Hershey PA
| | - Scot R. Kimball
- Department of Physiology, The Pennsylvania State
University- College of Medicine, Hershey PA
| | - Nate R. Geyer
- Department of Public Health Sciences, The Pennsylvania
State University- College of Medicine, Hershey PA
| | - Vernon M. Chinchilli
- Department of Public Health Sciences, The Pennsylvania
State University- College of Medicine, Hershey PA
| | - Rohit Loomba
- Division of Gastroenterology and Hepatology, Department of
Medicine, University of California San Diego, San Diego CA,NAFLD Research Center, University of California San Diego,
San Diego CA
| | - Kathryn Schmitz
- Department of Public Health Sciences, The Pennsylvania
State University- College of Medicine, Hershey PA,Cancer Institute, The Pennsylvania State University-
Milton S. Hershey Medical Center, Hershey PA,Department of Kinesiology, The Pennsylvania State
University- College of Medicine, Hershey PA,Department of Physical Medicine & Rehabilitation,
The Pennsylvania State University- Milton S. Hershey Medical Center, Hershey
PA
| | - Christopher Sciamanna
- Department of Public Health Sciences, The Pennsylvania
State University- College of Medicine, Hershey PA,Cancer Institute, The Pennsylvania State University-
Milton S. Hershey Medical Center, Hershey PA,Department of Medicine, The Pennsylvania State University-
Milton S. Hershey Medical Center, -Hershey PA
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8
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Glass O, Liu D, Bechard E, Guy CD, Pendergast J, Mae Diehl A, Abdelmalek MF. Perceptions of Exercise and Its Challenges in Patients With Nonalcoholic Fatty Liver Disease: A Survey-Based Study. Hepatol Commun 2021; 6:334-344. [PMID: 34697917 PMCID: PMC8793987 DOI: 10.1002/hep4.1808] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 07/13/2021] [Accepted: 08/01/2021] [Indexed: 11/13/2022] Open
Abstract
Exercise is a foundational treatment for nonalcoholic fatty liver disease (NAFLD); however, the majority of patients are unable to initiate and maintain effective exercise habits and remain at increased risk for progressive liver disease. Barriers and limitations to exercise in patients with NAFLD have not been fully identified. We performed a single survey of 94 patients with biopsy‐proven NAFLD to understand baseline physical activity and sedentary behavior, self‐perceived fitness, limitations to exercise, potential solutions to increase physical activity behavior, and perception of exercise as a foundational treatment for NAFLD. For exploratory analyses, we evaluated differences in responses to the survey by grouping severity of hepatic fibrosis as follows: nonalcoholic fatty liver (NAFL); early stage (nonalcoholic steatohepatitis [NASH] F0, NASH F1, NASH F2); and late stage (NASH F3, NASH F4). Zero weekly total physical activity was reported by 29% of patients with NAFLD. Late‐stage NASH had significantly lower vigorous (P = 0.024), walking (P = 0.029), total weekly activity (P = 0.043), and current fitness level (P = 0.022) compared to early stage NASH. Overall, 72% of patients with NAFLD reported limitations to exercise, with the greatest proportion citing lack of energy (62%), fatigue (61%), prior/current Injury (50%), and shortness of breath (49%). A preference for personal training to increase their physical activity was indicated by 66% of patients with NAFLD, and 63% preferred exercise over medication to treat NAFLD. Conclusion: The majority of patients with NAFLD have limitations to exercise but prefer exercise as a treatment option for NAFLD in the form of personal training. Patients with NAFLD may have unique physiologic limitations to exercise that worsen with fibrosis severity. Exercise interventions or services that are personalized and scalable may improve sustainability of exercise habits in the long term.
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Affiliation(s)
- Oliver Glass
- Division of General Internal Medicine, Duke University, Durham, NC, USA
| | - Daniel Liu
- Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, USA
| | | | - Cynthia D Guy
- Department of Pathology, Duke University, Durham, NC, USA
| | - Jane Pendergast
- Department of Biostatistics and Bioinformatics, Duke University, Durham, NC, USA
| | - Anna Mae Diehl
- Division of Gastroenterology and Hepatology, Duke University, Durham, NC, USA
| | - Manal F Abdelmalek
- Division of Gastroenterology and Hepatology, Duke University, Durham, NC, USA
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9
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Motz V, Faust A, Dahmus J, Stern B, Soriano C, Stine JG. Utilization of a Directly Supervised Telehealth-Based Exercise Training Program in Patients With Nonalcoholic Steatohepatitis: Feasibility Study. JMIR Form Res 2021; 5:e30239. [PMID: 34402795 PMCID: PMC8408749 DOI: 10.2196/30239] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/07/2021] [Accepted: 07/06/2021] [Indexed: 12/12/2022] Open
Abstract
Background Most patients with nonalcoholic fatty liver disease (NAFLD) are physically inactive despite the well-known benefits of physical activity. Telehealth offers promise as a novel way to deliver an exercise training program and increase physical activity. However, the feasibility, safety, and efficacy of telehealth-based exercise programs is unknown in patients with NAFLD. Objective The aim of this study was to determine the feasibility of a directly supervised exercise training program delivered exclusively with telehealth to patients with nonalcoholic steatohepatitis (NASH), the progressive form of NAFLD. Methods In response to COVID-19 research restrictions, we adapted an existing clinical trial and delivered 20 weeks of moderate-intensity aerobic training 5 days a week under real-time direct supervision using an audio–visual telehealth platform. Aerobic training was completed by walking outdoors or using a home treadmill. Fitness activity trackers with heart rate monitors ensured exercise was completed at the prescribed intensity with real-time feedback from an exercise physiologist. Results Three female patients with biopsy-proven NASH were enrolled with a mean age of 52 (SD 14) years. The mean body mass index was 31.9 (SD 5.1) kg/m2. All patients had metabolic syndrome. All patients completed over 80% of exercise sessions (mean 84% [SD 3%]) and no adverse events occurred. Body weight (mean –5.1% [SD 3.7%]), body fat (mean –4.4% [SD 2.3%]), and waist circumference (mean –1.3 in. [SD 1.6 in.]) all improved with exercise. The mean relative reduction in magnetic resonance imaging-proton density fat fraction (MRI-PDFF) was 35.1% (SD 8.8%). Mean reductions in hemoglobin A1c and Homeostatic Model Assessment for Insulin Resistance were also observed (–0.5% [SD 0.2%] and –4.0 [SD 1.2], respectively). The mean peak oxygen consumption (VO2peak) improved by 9.9 (SD 6.6) mL/kg/min. Conclusions This proof-of-concept study found that supervised exercise training delivered via telehealth is feasible and safe in patients with NASH. Telehealth-based exercise training also appears to be highly efficacious in patients with NASH, but this will need to be confirmed by future large-scale trials. Trial Registration ClinicalTrials.gov NCT03518294; https://clinicaltrials.gov/ct2/show/NCT03518294
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Affiliation(s)
- Victoria Motz
- Penn State Milton S Hershey Medical Center, Hershey, PA, United States
| | - Alison Faust
- Penn State Milton S Hershey Medical Center, Hershey, PA, United States
| | - Jessica Dahmus
- Penn State Milton S Hershey Medical Center, Hershey, PA, United States
| | - Benjamin Stern
- Penn State Milton S Hershey Medical Center, Hershey, PA, United States
| | | | - Jonathan G Stine
- Penn State Milton S Hershey Medical Center, Hershey, PA, United States
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10
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Exercise Training Reverses Gut Dysbiosis in Patients With Biopsy-Proven Nonalcoholic Steatohepatitis: A Proof of Concept Study. Clin Gastroenterol Hepatol 2021; 19:1723-1725. [PMID: 32882426 PMCID: PMC9067391 DOI: 10.1016/j.cgh.2020.08.063] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/26/2020] [Accepted: 08/26/2020] [Indexed: 02/07/2023]
Abstract
Nonalcoholic fatty liver disease is the leading cause of liver disease worldwide and can progress to nonalcoholic steatohepatitis (NASH) through physical inactivity and gut dysbiosis.1 Exercise training reverses gut dysbiosis in non-NASH persons with obesity and in NASH animal models.2,3 Consequently, we conducted a proof-of-concept study investigating the effect of exercise training on gut dysbiosis in NASH patients.
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11
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Sharma S, Stine JG, Verbeek T, Bezinover D. Management of Patients With Non-alcoholic Steatohepatitis Undergoing Liver Transplantation: Considerations for the Anesthesiologist. J Cardiothorac Vasc Anesth 2021; 36:2616-2627. [PMID: 34391652 DOI: 10.1053/j.jvca.2021.07.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 06/24/2021] [Accepted: 07/09/2021] [Indexed: 11/11/2022]
Abstract
Non-alcoholic fatty liver disease (NAFLD) currently affects more than 25% of the world population and is rising. NAFLD can progress to non-alcoholic steatohepatitis that is associated with hepatic inflammation and fibrosis and can result in cirrhosis with subsequent liver failure. Non-alcoholic steatohepatitis (NASH) has now emerged as one of the leading etiologies for a liver transplant among adults in the United States. Given the rising incidence of liver transplants in patients with NASH-related cirrhosis, it is essential for anesthesiologists to be familiar with this condition as well as with NASH-related comorbidities and perioperative complications. Not only is NASH linked to metabolic syndrome, but it also is independently associated with cardiovascular disease, renal and thyroid dysfunction, obstructive sleep apnea (OSA), and a hypercoagulable state. The association with these conditions can affect the perioperative outcome of these patients, particularly because of increased mortality from major adverse cardiovascular events and sepsis. In order to decrease the perioperative morbidity and mortality of patients with NASH undergoing a liver transplant, a multidisciplinary approach to their perioperative management is essential, along with careful preoperative evaluation and aggressive intraoperative and postoperative monitoring. The focus of this review article is to provide a comprehensive overview of challenges associated with liver transplants in patients with NASH and to provide suggestions for appropriate patient selection and perioperative management.
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Affiliation(s)
- Sonal Sharma
- Department of Anesthesiology and Perioperative Medicine, Penn State Health Milton S. Hershey Medical Center, Hershey, PA.
| | - Jonathan G Stine
- Liver Center, Pennsylvania State University, Penn State Health Milton S Hershey Medical Center, Hershey, PA; Department of Medicine and Public Health Sciences, Pennsylvania State University, Penn State Milton S Hershey Medical Center, Hershey, PA; Division of Gastroenterology and Hepatology, Department of Medicine, Pennsylvania State University, Penn State Milton S Hershey Medical Center, Hershey, PA; Cancer Institute, Pennsylvania State University, Penn State Milton S Hershey Medical Center, Hershey, PA
| | - Thomas Verbeek
- Department of Anesthesiology and Perioperative Medicine, Penn State Health Milton S. Hershey Medical Center, Hershey, PA
| | - Dmitri Bezinover
- Department of Anesthesiology and Perioperative Medicine, Penn State Health Milton S. Hershey Medical Center, Hershey, PA; Liver Center, Pennsylvania State University, Penn State Health Milton S Hershey Medical Center, Hershey, PA
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12
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Buzzetti E, Linden A, Best LM, Madden AM, Roberts D, Chase TJG, Freeman SC, Cooper NJ, Sutton AJ, Fritche D, Milne EJ, Wright K, Pavlov CS, Davidson BR, Tsochatzis E, Gurusamy KS. Lifestyle modifications for nonalcohol-related fatty liver disease: a network meta-analysis. Cochrane Database Syst Rev 2021; 6:CD013156. [PMID: 34114650 PMCID: PMC8193812 DOI: 10.1002/14651858.cd013156.pub2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND The prevalence of nonalcohol-related fatty liver disease (NAFLD) varies between 19% and 33% in different populations. NAFLD decreases life expectancy and increases the risks of liver cirrhosis, hepatocellular carcinoma, and requirement for liver transplantation. There is uncertainty surrounding the relative benefits and harms of various lifestyle interventions for people with NAFLD. OBJECTIVES To assess the comparative benefits and harms of different lifestyle interventions in the treatment of NAFLD through a network meta-analysis, and to generate rankings of the different lifestyle interventions according to their safety and efficacy. SEARCH METHODS We searched CENTRAL, MEDLINE, Embase, Science Citation Index Expanded, Conference Proceedings Citation Index - Science, World Health Organization International Clinical Trials Registry Platform, and trials registers until February 2021 to identify randomised clinical trials in people with NAFLD. SELECTION CRITERIA We included only randomised clinical trials (irrespective of language, blinding, or status) in people with NAFLD, whatever the method of diagnosis, age, and diabetic status of participants, or presence of non-alcoholic steatohepatitis (NASH). We excluded randomised clinical trials in which participants had previously undergone liver transplantation. DATA COLLECTION AND ANALYSIS We planned to perform a network meta-analysis with OpenBUGS using Bayesian methods and to calculate the differences in treatments using hazard ratios (HRs), odds ratios (ORs), and rate ratios (RaRs) with 95% credible intervals (CrIs) based on an available-participant analysis, according to National Institute of Health and Care Excellence Decision Support Unit guidance. However, the data were too sparse for the clinical outcomes. We therefore performed only direct comparisons (head-to-head comparisons) with OpenBUGS using Bayesian methods. MAIN RESULTS We included a total of 59 randomised clinical trials (3631 participants) in the review. All but two trials were at high risk of bias. A total of 33 different interventions, ranging from advice to supervised exercise and special diets, or a combination of these and no additional intervention were compared in these trials. The reference treatment was no active intervention. Twenty-eight trials (1942 participants) were included in one or more comparisons. The follow-up ranged from 1 month to 24 months. The remaining trials did not report any of the outcomes of interest for this review. The follow-up period in the trials that reported clinical outcomes was 2 months to 24 months. During this short follow-up period, clinical events related to NAFLD such as mortality, liver cirrhosis, liver decompensation, liver transplantation, hepatocellular carcinoma, and liver-related mortality were sparse. This is probably because of the very short follow-up periods. It takes a follow-up of 8 years to 28 years to detect differences in mortality between people with NAFLD and the general population. It is therefore unlikely that differences by clinical outcomes will be noted in trials with less than 5 years to 10 years of follow-up. In one trial, one participant developed an adverse event. There were no adverse events in any of the remaining participants in this trial, or in any of the remaining trials, which seemed to be directly related to the intervention. AUTHORS' CONCLUSIONS The evidence indicates considerable uncertainty about the effects of the lifestyle interventions compared with no additional intervention (to general public health advice) on any of the clinical outcomes after a short follow-up period of 2 months to 24 months in people with nonalcohol-related fatty liver disease. Accordingly, high-quality randomised clinical trials with adequate follow-up are needed. We propose registry-based randomised clinical trials or cohort multiple randomised clinical trials (a study design in which multiple interventions are trialed within large longitudinal cohorts of participants to gain efficiencies and align trials more closely to standard clinical practice), comparing aerobic exercise and dietary advice versus standard of care (exercise and dietary advice received as part of national health promotion). The reason for the choice of aerobic exercise and dietary advice is the impact of these interventions on indirect outcomes which may translate to clinical benefit. The outcomes in such trials should be mortality, health-related quality of life, decompensated liver cirrhosis, liver transplantation, and resource use measures including costs of intervention and decreased healthcare use after a minimum follow-up of eight years, to find meaningful differences in the clinically important outcomes.
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Affiliation(s)
- Elena Buzzetti
- Sheila Sherlock Liver Centre, Royal Free Hospital and the UCL Institute of Liver and Digestive Health, London, UK
| | - Audrey Linden
- Division of Surgery and Interventional Science, University College London, London, UK
| | - Lawrence Mj Best
- Division of Surgery and Interventional Science, University College London, London, UK
| | - Angela M Madden
- School of Life and Medical Sciences, University of Hertfordshire, Hatfield, UK
| | - Danielle Roberts
- Division of Surgery and Interventional Science, University College London, London, UK
| | - Thomas J G Chase
- Department of General Surgery, Homerton University Hospital NHS Foundation Trust, London, UK
| | - Suzanne C Freeman
- Department of Health Sciences, University of Leicester, Leicester, UK
| | - Nicola J Cooper
- Department of Health Sciences, University of Leicester, Leicester, UK
| | - Alex J Sutton
- Department of Health Sciences, University of Leicester, Leicester, UK
| | | | | | - Kathy Wright
- Cochrane Hepato-Biliary Group, Copenhagen Trial Unit, Centre for Clinical Intervention Research, The Capital Region of Denmark, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Chavdar S Pavlov
- Department of Therapy, I.M. Sechenov First Moscow State Medical University, Moscow, Russian Federation
| | - Brian R Davidson
- Division of Surgery and Interventional Science, University College London, London, UK
| | - Emmanuel Tsochatzis
- Sheila Sherlock Liver Centre, Royal Free Hospital and the UCL Institute of Liver and Digestive Health, London, UK
| | - Kurinchi Selvan Gurusamy
- Division of Surgery and Interventional Science, University College London, London, UK
- Department of Therapy, I.M. Sechenov First Moscow State Medical University, Moscow, Russian Federation
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13
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Lai PF, Baskaran R, Kuo CH, Day CH, Chen RJ, Ho TJ, Yeh YL, Padma VV, Lai CH, Huang CY. Bioactive dipeptide from potato protein hydrolysate combined with swimming exercise prevents high fat diet induced hepatocyte apoptosis by activating PI3K/Akt in SAMP8 mouse. Mol Biol Rep 2021; 48:2629-2637. [PMID: 33791907 DOI: 10.1007/s11033-021-06317-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 03/24/2021] [Indexed: 10/21/2022]
Abstract
Obesity in aged population have surges the occurrence of various metabolic disorders including Nonalcoholic fatty liver disease (NAFLD). Apoptosis in the liver is one of the causative factors for NAFLD-induced liver damage. Plants derived bioactive peptides have been shown as an alternative treatment approach for the treating NAFLD due to its less toxicity. Moderate exercise has been reported to improve cellular physiological function prevent age associated metabolic disorders. In the present study, we evaluate the effects of bioactive dipeptide (IF) derived from alcalase potato-protein hydrolysates and swimming exercise in preventing High Fat Diet (HFD)-induced liver damage in senescence accelerated mouse-prone 8 (SAMP8) mice model. Mouse were fed with HFD for 6 weeks followed by oral IF administration or swimming exercise and both for 8 weeks. HFD induces significant structural changes in liver of HFD fed SAMP8 mouse. Both IF administration and exercise prevent the structural abnormalities induced by HFD, however, combined IF treatment and exercise offer better protection. Combined IF treatment and exercise activate PI3K/Akt cell survival protein and effectively inhibit Fas-FADD-induced apoptosis in HFD fed aged mouse. Oral supplementation of bioactive peptide IF combined with moderate swimming exercise effectively alleviate HFD-induced hepatic injury in aged mice.
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Affiliation(s)
- Pei-Fang Lai
- Department of Emergency Medicine, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Tzu Chi University, Hualien, Taiwan.,Department of Medicine, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Tzu Chi University, Hualien, Taiwan
| | - Rathinasamy Baskaran
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung, 41354, Taiwan
| | - Chia-Hua Kuo
- Department of Sports Sciences, University of Taipei, Taibei, Taiwan
| | | | - Ray-Jade Chen
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Tsung-Jung Ho
- Department of Chinese Medicine, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Tzu Chi University, Hualien, Taiwan
| | - Yu-Lan Yeh
- Department of Pathology, Changhua Christian Hospital, Changhua, Taiwan.,Jen-Teh Junior College of Medicine, Nursing and Management, Miaoli, Taiwan
| | | | - Chin-Hu Lai
- Division of Cardiovascular Surgery, Department of Surgery, Taichung Armed Force General Hospital, Taichung, 41152, Taiwan, People's Republic of China
| | - Chih-Yang Huang
- Cardiovascular and Mitochondrial Related Disease Research Center, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Tzu Chi University of Science and Technology, Hualien, Taiwan. .,Center of General Education, Buddhist Tzu Chi Medical Foundation, Tzu Chi University of Science and Technology, Hualien, Taiwan. .,Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan. .,Department of Medical Laboratory Science and Biotechnology, Asia University, Taichung, Taiwan.
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14
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Insights into the Impact of Microbiota in the Treatment of NAFLD/NASH and Its Potential as a Biomarker for Prognosis and Diagnosis. Biomedicines 2021; 9:biomedicines9020145. [PMID: 33546191 PMCID: PMC7913217 DOI: 10.3390/biomedicines9020145] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/26/2021] [Accepted: 01/31/2021] [Indexed: 02/06/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is an increasing cause of chronic liver illness associated with obesity and metabolic disorders, such as hypertension, dyslipidemia, or type 2 diabetes mellitus. A more severe type of NAFLD, non-alcoholic steatohepatitis (NASH), is considered an ongoing global health threat and dramatically increases the risks of cirrhosis, liver failure, and hepatocellular carcinoma. Several reports have demonstrated that liver steatosis is associated with the elevation of certain clinical and biochemical markers but with low predictive potential. In addition, current imaging methods are inaccurate and inadequate for quantification of liver steatosis and do not distinguish clearly between the microvesicular and the macrovesicular types. On the other hand, an unhealthy status usually presents an altered gut microbiota, associated with the loss of its functions. Indeed, NAFLD pathophysiology has been linked to lower microbial diversity and a weakened intestinal barrier, exposing the host to bacterial components and stimulating pathways of immune defense and inflammation via toll-like receptor signaling. Moreover, this activation of inflammation in hepatocytes induces progression from simple steatosis to NASH. In the present review, we aim to: (a) summarize studies on both human and animals addressed to determine the impact of alterations in gut microbiota in NASH; (b) evaluate the potential role of such alterations as biomarkers for prognosis and diagnosis of this disorder; and (c) discuss the involvement of microbiota in the current treatment for NAFLD/NASH (i.e., bariatric surgery, physical exercise and lifestyle, diet, probiotics and prebiotics, and fecal microbiota transplantation).
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15
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Yang W, Zhao J, Zhao Y, Li W, Zhao L, Ren Y, Ou R, Xu Y. Hsa_circ_0048179 attenuates free fatty acid-induced steatosis via hsa_circ_0048179/miR-188-3p/GPX4 signaling. Aging (Albany NY) 2020; 12:23996-24008. [PMID: 33221744 PMCID: PMC7762518 DOI: 10.18632/aging.104081] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 08/17/2020] [Indexed: 12/12/2022]
Abstract
Although circular RNAs (circRNAs) are known to play key roles in non-alcoholic fatty liver disease, much about their targets and mechanisms remains unknown. We therefore investigated the actions and mechanisms of hsa_circ_0048179 in an in vitro model of NAFLD. HepG2 cells were exposed to oleate/palmitate (2:1 ratio) for 24 h to induce intracellular lipid accumulation. Using CCK-8 assays, flow cytometry, fluorescence microscopy, western blotting, RT-qPCR, and Oil red O staining, we found that oleate/palmitate treatment reduced cell viability while increasing apoptosis and lipid accumulation in HepG2 cells. Levels of the antioxidant enzyme GPX4 were decreased in oleate/palmitate-treated HepG2 cells, and there were corresponding increases in reactive oxygen species and damage to mitochondrial cristae. Levels of hsa_circ_0048179 expression were also suppressed by oleate/palmitate treatment, and GPX4 levels were markedly increased in HepG2 cells following transfection with hsa_circ_0048179. Analysis of its mechanism revealed that hsa_circ_0048179 upregulated GPX4 levels by acting as a competitive “sponge” of miR-188-3p and that hsa_circ_0048179 attenuated oleate/palmitate-induced lipid accumulation in HepG2 cells by sponging miR-188-3p. Collectively, our findings suggest that hsa_circ_0048179 may play a key role in the pathogenesis of steatosis and may thus be a useful target for drug development.
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Affiliation(s)
- Wenjun Yang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jinduo Zhao
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Ye Zhao
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Wenfeng Li
- Laboratory for Advanced Interdisciplinary Research, Institutes of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Liang Zhao
- Laboratory for Advanced Interdisciplinary Research, Institutes of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yi Ren
- Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, FL 32304, USA
| | - Rongying Ou
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.,Laboratory for Advanced Interdisciplinary Research, Institutes of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yunsheng Xu
- Laboratory for Advanced Interdisciplinary Research, Institutes of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.,Department of Dermatovenereology, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, China
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