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International Journal of Physiology and Pathophysiology
SJR: 0.106

ISSN Imprimer: 2155-014X
ISSN En ligne: 2155-0158

Archives: Volume 1, 2010 to Volume 9, 2018

International Journal of Physiology and Pathophysiology

DOI: 10.1615/IntJPhysPathophys.v9.i3.70
pages 247-255

Dynamics of Regeneration of Striated Muscles in Rats with Posttraumatic Reflex Contractures

Ulyana D. Matolych
Danylo Halytsky National Medical University, Lviv, Ukraine
Victoria V. Pankevych
Danylo Halytsky National Medical University, Lviv, Ukraine
Svetlana V. Ushtan
Danylo Halytsky National Medical University, Lviv, Ukraine

RÉSUMÉ

In the comparative aspect, the regeneration processes in striated muscles of hind left leg were investigated in rats with posttraumatic reflex contractures against the background of physiotherapeutic treatment. Macro- and microscopic evaluation of pathomorphological changes was performed in the work. A relative area of myogenic elements (striated muscle elements), connective-tissue elements, and neo-vasculature in the muscular-connective tissue in the scar in percentage has been determined using the method of point counting (field method). Depending on the signs of pain behavior (behavioral changes, additional signs), the intensity of myogenic pain syndrome (low, moderate, high, very high) was studied. It has been established that the use of magnetic-laser therapy led to the formation of muscular-connective tissue scar up to the 28th day with a predominance of a portion of striated muscle tissue of 90.74 ± 0.17%. Behavioral and motor responses became normalized; no pain was observed in 56% of rats, pain intensity was low in 44%. In animals with the same trauma that were not treated, the portion of striated muscle tissue was 37.08 ± 0.34%, and signs of pain of high and moderate intensity were observed. By the 28th day, the animals could brace against their hind limbs while moving, but due to a sharp restriction of the function of the left hind limb, they could not move freely. The obtained results are the basis for developing new approaches to improving the methods of remedial treatment of contractures using magnetic-laser therapy.


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