The muscle-skeletal lesion are frequentely found in professional sports and recreation being a decisive factor in the abandonment of this practic. The repair of muscle injury is a extensive process, in most cases are imcomplete, due deposition of fibrous mesh. An efficient tissue repair ocorres events as angiogenesis (arteriogenesis and vasculogenesis), fibrogenesis and myogenesis regulated for differents growth factors. GM-CSF is a pleiotropic factor for hematopiesis that stimulates myeloblats and monoblast. Recents results in our laboratory using therapy with humanGM-CSF gene showed proliferation and increased density vessels in small and medium animals with limb isquemic. This work showed a strong therapeutic effect of GM-CSF because it promoted the recovery of muscle mass, force and structure by mobilizing therapeutic cells, augmenting the number of vessels, reduction of fibrosis area and and a improvement in the histopatological profile. These results lead us suppose that GM-CSF can act as a controlling factor and/or regulatory role in the repair process in muscle lesion, acting directly or indirectley in angiogenesis, fibrogenesis ans miogenics mechanismis. In this study we proposed study effects of GM-CSF gene in a regulation of angiogenic, fibrogenesis and myogenic growth factors in muscle lesion murine model.
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