Trial reportGrowth hormone & IGF research : official journal of the Growth Hormone Research Society and the International IGF Research Society2016
FNDC5 relates to skeletal muscle IGF-I and mitochondrial function and gene expression in obese men with reduced growth hormone.
Trial report in Growth hormone & IGF research : official journal of the Growth Hormone Research Society and the International IGF Research Society, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 31 citations in OpenAlex.
- Role and Functions of Irisin: A Perspective on Recent Developments and Neurodegenerative Diseases.Antioxidants (Basel, Switzerland) · 2025Review
- SMN Deficiency Induces an Early Non-Atrophic Myopathy with Alterations in the Contractile and Excitatory Coupling Machinery of Skeletal Myofibers in the SMN∆7 Mouse Model of Spinal Muscular Atrophy.International journal of molecular sciences · 2024Article
- Weighted single-step genome-wide association study for direct and maternal genetic effects associated with birth and weaning weights in sheep.Scientific reports · 2024Article
- Review
- Article
- The Effect of Irisin as a Metabolic Regulator and Its Therapeutic Potential for Obesity.International journal of endocrinology · 2021Review
- Exercise enhances mitochondrial fission and mitophagy to improve myopathy following critical limb ischemia in elderly mice via the PGC1a/FNDC5/irisin pathway.Skeletal muscle · 2020Article
- Alterations in global DNA methylation and metabolism-related genes caused by zearalenone in MCF7 and MCF10F cells.Mycotoxin research · 2019Article
- Increased FNDC5 is associated with insulin resistance in high fat-fed mice.Physiological reports · 2017Article
- Article
- Article
Corrections and comments
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Authors and funding
9 authors at 2 institutions in 2 countries.
Funding
Abstract
objectiveTo investigate the relationship of skeletal muscle FNDC5 mRNA expression and circulating irisin to the GH/IGF-I axis and to skeletal muscle mitochondrial function and mitochondria-related gene expression in obese men.
designFifteen abdominally obese men with reduced growth hormone received 12weeks of recombinant human GH (rhGH). Before and after treatment, they underwent (31)P-magnetic resonance spectroscopy to evaluate phosphocreatine (PCr) recovery as a measure of mitochondrial function and skeletal muscle biopsy to assess expression of mitochondrial-related genes. Serum irisin and IGF-I and skeletal muscle FNDC5 and IGF-I mRNA were measured.
resultsAt baseline, skeletal muscle FNDC5 mRNA was significantly and positively associated with IGF-I mRNA (ρ=0.81, P=0.005) and rate of PCr recovery (ρ=0.79, P=0.006). Similar relationships of circulating irisin to IGF-I mRNA (ρ=0.63, P=0.05) and rate of PCr recovery (ρ=0.48, P=0.08) were demonstrated, but were not as robust as those with muscle FNDC5 expression. Both serum irisin and skeletal muscle FNDC5 mRNA were significantly associated with PPARγ (ρ=0.73, P=0.02 and ρ=0.85, P=0.002), respectively. In addition, FNDC5 mRNA was correlated with skeletal muscle PGC-1α (ρ=0.68, P=0.03), NRF1 (ρ=0.66, P=0.04) and TFAM (ρ=0.79, P=0.007) mRNA. Neither serum irisin nor muscle mRNA expression of FNDC5 changed with rhGH treatment.
conclusionThese novel data in skeletal muscle demonstrate that local expression of FNDC5 is associated with mRNA expression of IGF-I and mitochondrial function and mitochondria-related gene expression in obese subjects with reduced growth hormone and suggest a potential role for FNDC5 acting locally in muscle in a low GH state. Further studies are needed to clarify the relationship between the GH/IGF-I axis and irisin.
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