C. Mukundan et al., Mast cell mediation of muscle and pulmonary injury following hindlimb ischemia-reperfusion, J HIST CYTO, 49(8), 2001, pp. 1055-1056
We have observed extensive mast cell degranulation in the reperfused hindli
mb muscle of the mouse, accompanied by pathological changes within the musc
le. As quantitated by the tissue:blood I-125 permeability ratio, both the h
indlimbs 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 di
rect lung injury. Mast cells in the lung contain mMCP-1, whereas those in t
he muscle do not. Neither extensive muscle injury nor an increased pulmonar
y permeability index occurs in the mast cell-deficient W/W-V mice. We concl
ude that the mast cell is a key mediator in both local ischemia-reperfusion
injury (I-R) of muscle and consequent remote lung injury.