Author: n SM, Kim HJ, Park RW, Kim W, Gimm YM, Park I, Hong S, Hong JJ, Oh JH, Kahng H, Park EY.
Affiliation: Department of Otolaryngology, School of Medicine, Konyang University, Daejeon, Republic of Korea.
Conference/Journal: Laryngoscope.
Date published: 2012 Oct 11
Other:
Special Notes: doi: 10.1002/lary.23620. , Word Count: 189
OBJECTIVES/HYPOTHESIS:
The aim of this study was to investigate the effects of a 1.8 GHz continuous electromagnetic fields (EMF) on human nasal mucociliary transport, and to determine the pathophysiology of ciliary beat frequency (CBF) during an EMF-induced change.
METHODS:
Human nasal mucosa cells were exposed to a 1.8 GHz EMF (SAR=1.0 W/kg), and CBF was analyzed using an optical flow technique with the peak detection method.
RESULTS:
The 1.8 GHz-exposed group showed a decreased CBF when compared to the control group. In the cytotoxicity assay, difference in survival rates was not found between the two groups. In the EMF-exposed group, protein kinase C (PKC) activity was increased during a PKC activity assay. The broad PKC inhibitor, Calphostin C abolished the EMF-induced decrease of CBF. The EMF-induced decrease of CBF was abolished by GF 109203X, a novel PKC (nPKC) isoform inhibitor, whereas the decrease was not attenuated by Gö-6976, a specific inhibitor of conventional PKC (cPKC) isoform.
CONCLUSIONS:
EMF may inhibit CBF via an nPKC-dependent mechanism. Therefore, we have confirmed that EMF could decrease CBF by increasing PKC activity. Laryngoscope, 2012.
Copyright © 2012 The American Laryngological, Rhinological, and Otological Society, Inc.
PMID: 23060235