The question of the influence of the dosed tissue stretching on the concentration of the hypoxia-inducible factor (HIF-1α) in the stretched flap

Relevance: the method of dosed dermotension as one of the options for plastic reconstruction of the foot with the soft tissue defects of various etiologies (including diabetes mellitus) are widely used in surgery. Local circulatory compensated hypoxia, occurs when dosed dermotension, stimulates proliferation of blood vessels, but to date no proven link between measured growth and the concentration of cytokine HIF-1α. Aim: the aim was to identify patterns between local circulatory compensated hypoxia created by carrying out the dosed dermotension and cytokine concentration of HIF-1α in stretched the flap when closing the wound of the soft tissues. Materials and methods: the experiment was carried out on 18 experimental animals, which was simulated wound scapular area and conducted a hardware apparatus dermotension under the control of laser Doppler flowmetry, formed the skin samples and performed enzyme-linked immunosorbent assay to determine the concentration of cytokine HIF-1α after 30 minutes, 24 hours from the beginning of tissue stretching. Results: the concentration of HIF-1α in the skin before the start of the dermotension was (Me [Q1; Q3]) 110 [98,1; 114,8] ng/ml. A statistically significant increase in the concentration of HIF-1α to 148 [122,2; 221,7] ng/ml (p=0.008) recorded in the group of animals who underwent tissue stretching within 30 minutes, research also showed that the concentration of HIF-1α increased to 330 [246,4; 463,3] ng/ml (p=0.007) after 24 hours from the start of the dosed strains. Conclusion: the concentration of cytokine HIF-1α in stretched the flap increases with dosed dermotension. Thus, the regulation of adaptation of the skin to stretching is performed by increasing the concentration of the cytokine HIF-1α.