Cited by 85Adipokines, Inflammation, and Metabolic DiseasesExercise and Physiological ResponsesPhysical Activity and Health

Exercise-induced lowering of fetuin-A may increase hepatic insulin sensitivity

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Malin, Steven K., del Rincon, Juan Pablo, Huang, Hazel, Kirwan, John P.·2014·Medicine & Science in Sports & Exercise

Abstract

INTRODUCTION: Fetuin-A is a novel hepatokine, and there is preliminary evidence that it may contribute to the pathogenesis of type 2 diabetes. Exercise reduces fetuin-A, but the specific metabolic effects particularly as they relate to the regulation of insulin resistance are unknown. This led us to examine the effect of exercise training on circulating fetuin-A in relation to skeletal muscle and/or hepatic insulin resistance in obese adults. METHODS: Twenty older adults (66.3 ± 0.9 yr; body mass index, 34.1 ± 1.2 kg · m(-1)) participated in this prospective 12-wk study and underwent supervised exercise training (5 d · wk(-1), 60 min · d(-1) at approximately 85% HRmax). Insulin resistance was assessed using the euglycemic-hyperinsulinemic clamp (40 mU · m(-2) · min(-1)) with isotope dilution ([6,6-H2]-glucose). Skeletal muscle insulin sensitivity (rate of glucose disposal), hepatic insulin resistance (rate of glucose appearance × fasting insulin), metabolic flexibility (respiratory quotient clamp - respiratory quotient fasting), fetuin-A, high-molecular weight adiponectin, high-sensitivity C-reactive protein, leptin, and body fat (dual energy x-ray absorptiometry) were measured before and after the intervention. RESULTS: Exercise reduced body fat, high-sensitivity C-reactive protein, leptin and hepatic as well as skeletal muscle insulin resistance (each, P < 0.05). Fetuin-A was decreased by approximately 8% (pre, 1.01 ± 0.08, vs post, 0.89 ± 0.06 g · L(-1); P < 0.05) after the intervention, and lower fetuin-A after exercise correlated with lower hepatic insulin resistance (r = -0.46, P < 0.01), increased metabolic flexibility (r = -0.70, P < 0.01) and high-molecular weight adiponectin (r = -0.57, P < 0.01). CONCLUSIONS: Fetuin-A may contribute to exercise training-induced improvements in hepatic insulin resistance, CHO utilization, and inflammation in older obese adults. Further work is required to determine the cellular mechanism(s) of action for fetuin-A because this hepatokine is related to type 2 diabetes risk.

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  • A 12-week aerobic exercise training intervention decreased fetuin A levels in obese, insulin-resistant subjects, leading to decreased hepatic insulin resistance, total body fat, and fasting insulin levels.

    “Another 12-week aerobic exercise training intervention, consisting of treadmill walking at 85% maximum heart rate for 60 min per session, decreased fetuin A levels in obese, insulin-resistant subjects, leading to decreased hepatic insulin resistance, total body fat, and fasting insulin levels [139].”

    From The Role of Exercise in the Interplay between Myokines, Hepatokines, Osteokines, Adipokines, and Modulation of Inflammation for Energy Substrate Redistribution and Fat Mass Loss: A Review (2020) · cites this paper as [139]

    The Methods (Subjects) describe 12 weeks of supervised exercise, mainly treadmill walking for 60 minutes at 85% maximum heart rate. The Abstract (Results) reports reductions in fetuin-A, body fat, and hepatic insulin resistance. However, the retrieved Results do not report a decrease in fasting insulin, and the paper describes fetuin-A’s relationship to hepatic insulin resistance as an association rather than establishing that its reduction caused the other changes. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Acute exercise in humans does not alter plasma fetuin-A, but chronic exercise might decrease it.

    “Although acute exercise in humans does not alter plasma levels of fetuin-A97, chronic exercise might decrease plasma levels of fetuin-A72,101.”

    From Exerkines in health, resilience and disease (2022) · cites this paper as [101]

  • Chronic exercise in humans reduces circulating fetulin-A.

    “Chronic exercise in humans also reduces circulating levels of fetulin-A72,101.”

    From Exerkines in health, resilience and disease (2022) · cites this paper as [101]

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Authors
Malin, S. K., del Rincon, J. P., Huang, H., & Kirwan, J. P.
Affiliations
Cleveland Clinic (US)
Corresponding author
Kirwan, John P.
Venue
Medicine & Science in Sports & Exercise
Published
2014-11
Volume
46
Issue
11
Pages
2085-2090
ISSN
0195-9131 (ISSN-L)
OpenAlex
W2090122979
Cited by
85
References
27
Citations by year
2026: 3 · 2025: 9 · 2024: 14 · 2023: 6 · 2022: 5 · 2021: 5 · 2020: 11 · 2019: 6 · 2018: 5 · 2017: 9 · 2016: 4 · 2015: 6 · 2014: 2
FWCI
5.29
Type
journal article
Language
en
Open access
Locations
  • Medicine & Science in Sports & Exercise (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute on Aging (R01AG012834, R01AG12834)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK089547-S1, T32DK007319, R01DK089547)
  • National Center for Research Resources (UL1RR024989)
Topics
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
  • Health Sciences › Medicine › Physiology › Physical Activity and Health
Keywords
fetuin-A, exercise training, hepatic insulin resistance, skeletal muscle insulin sensitivity, hepatokines, type 2 diabetes, obesity, metabolic flexibility, high molecular weight adiponectin, inflammation, C-reactive protein, leptin, older adults, glucose metabolism, fat loss, hyperinsulinemic-euglycemic clamp, isotope dilution
MeSH terms
Aged, C-Reactive Protein, Female, Humans, Insulin Resistance, Liver, Male, Obesity, Exercise, Muscle, Skeletal, Leptin, Body Fat Distribution, Adiponectin, alpha-2-HS-Glycoprotein

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