background: a lot of remedies, mostly plant based, were mentioned in the persian old pharmacopoeias for promoting of burn and wound healing and tissue repairing. the efficacy of most of these old remedies is unexplored till now. adiantum capillus‑veneris from adiantaceae family is one of them that was used to treating of some kinds of chronic wounds. methods: methanol extract was fractionated t...

Since the beginning of this century, phagocytes have been recognized for their critical role in the inflammatory response. In addition to their functions in host defense, phagocytes (neutrophils, monocytes, and maerophages) can mediate tissue injury through a variety of mechanisms (3). Traditionally, attention has been focused on the potential for leukocytic lysosomal proteases to damage tissue...

The major unexplained phenomenon in fibrotic conditions is an increase in replicating fibroblasts. In this report we present evidence that oxygen free radicals can both stimulate and inhibit proliferation of cultured human fibroblasts, and that fibroblasts themselves release superoxide (O2.-) free radicals. Fibroblasts released O2.- in concentrations which stimulated proliferation, a finding co...

Oxygen-derived free radicals produced during reperfusion may be responsible for the disturbed pathology which follows prolonged ischaemia. Measurement of hepatic chemiluminescence (low level light emission resulting from the energy released during chemical reactions of free radicals) allowed determination of whether allopurinol could prevent formation of oxygen-derived free radicals during repe...

Mitomycin C (MC) is a naturally occurring anticancer agent which has been shown to be more cytotoxic to hypoxic tumor cells than to their aerobic counterparts. The mechanism of action of this agent is thought to involve biological reductive activation, to a species that alkylates DNA. A comparison of the cytotoxicity of MC to EMT6 tumor cells with that of the structural analogues porfiromycin (...