Mast cell mediation of muscle and pulmonary injury following hindlimb ischemia-reperfusion - PubMed (original) (raw)

Mast cell mediation of muscle and pulmonary injury following hindlimb ischemia-reperfusion

C Mukundan et al. J Histochem Cytochem. 2001 Aug.

Abstract

We have observed extensive mast cell degranulation in the reperfused hindlimb muscle of the mouse, accompanied by pathological changes within the muscle. As quantitated by the tissue:blood (125)I permeability ratio, both the hindlimbs and lungs exhibited a significant increment in permeability during hindlimb reperfusion. In lungs of the same mice, mast cell-derived chymase mMCP-1 coats alveolar macrophages, an event noted by us in acid-induced direct lung injury. Mast cells in the lung contain mMCP-1, whereas those in the muscle do not. Neither extensive muscle injury nor an increased pulmonary permeability index occurs in the mast cell-deficient W/W(v) mice. We conclude that the mast cell is a key mediator in both local ischemia-reperfusion injury (I-R) of muscle and consequent remote lung injury.

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