Commentary: Mechanistic Considerations for Associations Between Formaldehyde Exposure and Nasopharyngeal Carcinoma

Overview

Journal Environ Health

Publisher Biomed Central

Specialty Environmental Health

Date 2009 Nov 27

PMID 19939253

Citations 3

Authors

Chad M Thompson

Roland C Grafstrom

Affiliations

Soon will be listed here.

Abstract

Occupational exposure to formaldehyde has been linked to nasopharyngeal carcinoma. To date, mechanistic explanations for this association have primarily focused on formaldehyde-induced cytotoxicity, regenerative hyperplasia and DNA damage. However, recent studies broaden the potential mechanisms as it is now well established that formaldehyde dehydrogenase, identical to S-nitrosoglutathione reductase, is an important mediator of cGMP-independent nitric oxide signaling pathways. We have previously described mechanisms by which formaldehyde can influence nitrosothiol homeostasis thereby leading to changes in pulmonary physiology. Considering evidences that nitrosothiols govern the Epstein-Barr virus infection cycle, and that the virus is strongly implicated in the etiology of nasopharyngeal carcinoma, studies are needed to examine the potential for formaldehyde to reactivate the Epstein-Barr virus as well as additively or synergistically interact with the virus to potentiate epithelial cell transformation.

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