ArticleTurkish journal of medical sciences2022
Irisin relaxes rat thoracic aorta through inhibiting signaling pathways implicating protein kinase C.
Article in Turkish journal of medical sciences, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 1 citations in OpenAlex.
- Heat acclimation defense against exertional heat stroke by improving the function of preoptic TRPV1 neurons.Theranostics · 2025Article
- Associations between total, free and bioavailable 25-hydroxyvitamin D forms with adiponectin and irisin in maternal-neonatal pairs at birth from Greece.Frontiers in endocrinology · 2024Article
- Metformin relaxes rat thoracic aorta via nitric oxide, AMPK, potassium channels, and PKC.Iranian journal of basic medical sciences · 2023Article
- The role of potassium channels on vasorelaxant effects of elabela in rat thoracic aorta.Turk gogus kalp damar cerrahisi dergisi · 2022Article
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4 authors at 1 institution in 1 country.
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Abstract
backgroundIrisin, a newly identified exercise-derived myokine, has been found involved in a peripheral vasodilator effect. However, little is known regarding the potential vascular activity of irisin, and the mechanisms underlying its effects on vascular smooth muscle have not been fully elucidated. This study was aimed to investigate the effects of irisin on vascular smooth muscle contractility in rat thoracic aorta, and the hypothesis that protein kinase C (PKC) may have a role in these effects.
methodsIsometric contraction-relaxation responses of thoracic aorta rings were measured with an isolated organ bath model. The steady contraction was induced with 10 µM phenylephrine (PHE), and then the concentration-dependent responses of irisin (0.001-1 µM) were examined. The time-matched vehicle control (double distilled water) group was also formed. To evaluate the role of PKC, endothelium-intact thoracic aorta rings were incubated with 150 nM bisindolylmaleimide I (BIM I) for 20 min before the addition of 10 µM PHE and irisin. Also, a vehicle control group was formed for dimethyl sulfoxide (DMSO).
resultsIrisin exerted the vasorelaxant effects at concentrations of 0.01, 0.1, and 1 µM compared to the control group (p < 0.001). Besides, PKC inhibitor BIM I incubation significantly inhibited the relaxation responses induced by varying concentrations of irisin (p: 0.000 for 0.01 µM; p: 0.000 for 0.1 µM; p: 0.000 for 1 µM). However, DMSO, a solvent of BIM I, did not modulate the relaxant effects of irisin (p > 0.05). DISCUSSION: In conclusion, physiological findings were obtained regarding the functional relaxing effects of irisin in rat thoracic aorta. The findings demonstrated that irisin induces relaxation responses in endothelium-intact thoracic aorta rings in a concentration-dependent manner. Furthermore, this study is the first to report that irisin-induced relaxation responses are regulated probably via activating signaling pathways implicating PKC.
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