Autonomic function may not modulate irisin release in healthy adults: findings from a randomized cross-over study

Abstract

Objective: Autonomic nervous system, especially the sympathetic nervous system, may stimulate the expression of peroxisome proliferator-activated receptor γ coactivator-1α, which regulates irisin. This study aimed to explore whether there was any association between autonomic function as assessed by heart rate related indices and irisin release following acute exercise. Subjects and methods: Seventeen healthy adults were asked to perform an incremental exhaustive cycling as well as an incremental exhaustive running separately on different days. Heart rate was monitored, and blood samples were collected before, immediately, 10-, and 60-minutes post-exercise. Serum irisin was measured using ELISA kit. Results: Markers for autonomic function, such as heart rate at rest, peak, or recovery, heart rate reserve, heart rate recovery, and chronotropic index, were comparable between cycling and running (all P > 0.10). Irisin was increased immediately following both exercise. No significant association was observed between heart rate at rest, peak, or recovery and irisin level at the corresponding time-point, as well as between heart rate reserve, heart rate recovery, or chronotropic index and exercise induced irisin release, with or without controlling for age, body mass index, and glucose (all P > 0.10). Conclusions: Autonomic function might not be associated with irisin release in healthy adults.

Neuroplasticity to autophagy cross-talk in a therapeutic effect of physical exercises and irisin in ADHD

“…The proof of the relevance of irisin plasma levels to the effects of PE was particularly challenging, due to a lack of specific antibodies ( Albrecht et al, 2015 ). However, recent studies using either LC–MS measurements of irisin in plasma ( Jedrychowski et al, 2015 ) or applying extended validation of western blot measurements of plasma irisin ( Löffler et al, 2015 ) proved the presence of free irisin in human blood and confirmed the positive correlation between PEs and circulating irisin in human ( Tsuchiya et al, 2014 ; Jedrychowski et al, 2015 ; Ruan et al, 2018 ; Tari et al, 2019 ; Qiu et al, 2020 ). Preclinical studies also show the coincidence of physical activity and elevation in the plasma irisin levels in healthy subjects ( Murao et al, 2019 ).…”