It was reported that chitosan simulated
the migration of polymorphonuclear (PMN) as well as mononuclear
cells and accelerated the re-epithelization and normal skin
regeneration [8]. It has also been documented that chitosan confers
considerable antibacterial activity against a broad spectrum
of bacteria [9]. The interaction between positively charged chitosan
and negatively charged microbial cell wall leads to the leakage
of intracellular constituents. The binding of chitosan with
DNA and inhibition of mRNA synthesis occurs via the penetration
of chitosan into the nuclei of the microorganisms and interfering
with the synthesis of mRNA and proteins. It is reported also that
chitosan film containing fibroblast growth factor accelerate
wound healing for genetically diabetic mice [10].