Irisin

Dosis: 1 mg/kg

1   Allgemein

• Short Peptides and Telomere Length Regulator Hormone Irisin.

Irisin produced by muscles during exercise and promoting fat burning also exhibits geroprotective effect and induces telomere elongation in normal somatic cells. Special attention is paid to studies of the role of peptides Lys-Glu, Glu-Asp-Arg, and Ala-Glu-Asp-Gly in epigenetic regulation of irisin content. The data suggest that the immunomodulatory peptide Lys-Glu and neuroprotective peptide Glu-Asp-Arg modulate the life span by modulating irisin gene expression.

• Effect of aerobic training and resistance training on circulating irisin level and their association with change of body composition in overweight/obese adults: a pilot study.

In addition, we found the positive correlation between change of the circulating irisin and muscle mass (r=0.432, p=0.022) and the negative correlation between change of the circulating irisin and fat mass (r=-0.407, p=0.031). In the present pilot study, we found that circulating irisin level was increased by 8 weeks of resistance training in overweight/obese adults, suggesting that resistance training could be the efficient exercise type in overweight/obese considering positive change of body composition concomitant with increase of irisin levels.

• Dihydromyricetin stimulates irisin secretion partially via the PGC-1α pathway.

These results suggest that DHM can stimulate irisin secretion partially via the PGC-1α pathway. As a potent exercise mimetic, DHM is expected to benefit patients suffering from metabolic diseases, especially those who cannot undergo rigorous exercise. #

• Irisin: A myokine with locomotor activity.

Central treatment of irisin also induced significant increases in oxygen consumption, carbon dioxide production and heat production, indicating an increase in metabolic activity. Our study suggests that physical activity may signal to the central nervous system to coordinate locomotion with metabolic activity via irisin.

2   Osteoporose

Irisin promotes osteoblast proliferation and differentiation via activating the MAP kinase signaling pathways

Physical exercise is able to improve skeletal health. However, the mechanisms are poorly known. Irisin, a novel exercise-induced myokine, secreted by skeletal muscle in response to exercise, have been shown to mediate beneficial effects of exercise in many disorders.

3   Diabetes

Anti-diabetic activity of recombinant irisin in STZ-induced insulin-deficient diabetic mice.

In addition, oral administration of irisin lowered the blood glucose in diabetic mice. Our data suggested that irisin could lower blood glucose in insulin-deficient diabetic mice, to some extent, through irisin-mediated induction of energy and metabolic genes expression.

4  Arteriosklerose

Irisin protects against endothelial injury and ameliorates atherosclerosis in apolipoprotein E-Null diabetic mice

The present study indicates that systemic administration of irisin may be protected against endothelial injury and ameliorated atherosclerosis in apoE(-/-) diabetic mice. The endothelium-protective action of irisin was through activation of AMPK-PI3K-Akt-eNOS signaling pathway. Irisin could be therapeutic for atherosclerotic vascular diseases in diabetes.

5   Muskelschwund

• Resistance exercise training increases the expression of irisin concomitant with improvement of muscle function in aging mice and humans

Thus, resistant training might be an efficient intervention method to increase irisin levels and prevent age-related decline in muscle function.

• Ursolic Acid-induced elevation of serum irisin augments muscle strength during resistance training in men

These findings suggest that UA-induced elevation of serum irisin may be useful as an agent for the enhancement of skeletal muscle strength during RT

6   Adipositas

Endurance training-induced increase in circulating irisin levels is associated with reduction of abdominal visceral fat in middle-aged and older adults.

Serum irisin level was significantly increased in the middle-aged/older training group after the intervention period (P < 0.01), but not in the young training group. Furthermore, in the middle-aged/older training group, the endurance training-induced reduction in visceral adipose tissue area was negatively correlated with the change in serum irisin level (r = -0.54, P < 0.05). These results suggest a possible role for secreted irisin in the exercise-induced alteration of abdominal visceral fat in middle-aged and older adults.

7   Alterung

Plasma irisin levels predict telomere length in healthy adults

Multiple regression analysis using backward elimination revealed that relative telomere length can be predicted by age (b = -0.00735, p = 0.001) and plasma irisin levels (b = 0.04527, p = 0.021). These data support the view that irisin may have a role in the modulation of both energy balance and the ageing process

Stimuliert durch

Kälte
Muskelarbeit
Ursolsäure
Ampelopsis

Wirkungen

produced by muscles during exercise
promoting fat burning

geroprotective effect and induces telomere elongation in normal somatic cells

daily water and food intake, and blood glucose significantly decreased after various concentrations of recombinant irisin treatment 

Knee OA patients had lower serum irisin concentrations

positive correlation between change of the circulating irisin and muscle mass

negative correlation between change of the circulating irisin and fat mass

Irisin improves fatty acid oxidation and glucose utilization in type 2 diabetes by regulating the AMPK signaling pathway.

Artikel

Exercise, Irisin & Fat loss

Irisin: The “Exercise Hormone” has Powerful Health Benefits