Author(s): Duan R, Liu TC, Li Y, Guo H, Yao LB
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Abstract BACKGROUND AND OBJECTIVE: Low intensity He-Ne laser irradiation has been reported to induce respiratory burst of neutrophils for a long time, but the mechanism remains obscure. We speculated that it is mediated by some signal transduction pathways. STUDY DESIGN/MATERIALS AND METHODS: The protein tyrosine kinases (PTKs) inhibitor, genistein, the phospholipase C (PLC) inhibitor, U-73122, and the protein kinase C (PKC) inhibitor, calphostin C, were used to probe signal transduction pathways of respiratory burst of bovine neutrophils which were induced by He-Ne laser at a dose of 300 J/m(2), respectively. RESULTS: The inhibitor of PTKs can completely inhibit the He-Ne laser-induced respiratory burst of neutrophils. PLC and PKC inhibitors can obviously reduce it, but not fully inhibit it. CONCLUSION: These results suggest that PTKs play a key role in the He-Ne laser-induced respiratory burst of neutrophils and [PTK-PLC-PKC-NADPH oxidase] signal transduction pathways may be involved in this process. Copyright 2001 Wiley-Liss, Inc.
This article was published in Lasers Surg Med
and referenced in Pharmaceutica Analytica Acta