Fibrosin: a novel lymphokine in wound healing.

Several growth factors are actively synthesized during wound repair and function to stimulate different cell types involved in the process of healing. Fibrosin is a novel fibrogenic lymphokine that stimulates several biological activities that relate to in vivo scarring. To investigate the role of fibrosin, we used "punch biopsy" and linear wounding procedures in a murine model of wound healing. Histological examination showed that recombinant fibrosin stimulated epithelialization of wounds and accelerated healing of both punch biopsy and linear wounds. Fibrosin enhanced healing of linear wounds by reducing the time for healing by approximately 30-40%. From our data we estimated the healing time of control wounds to be 22-24 days; wounds treated with fibrosin appeared to heal in 14-16 days. Our observations suggest that fibrosin enhances wound healing and may be involved in accelerating epithelialization, collagen matrix formation, and also remodeling of the extracellular matrix in vivo. Thus fibrosin may function during different phases of wound healing and act as a potent inducer of scar formation and wound healing. This finding may have direct clinical applications.

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