6533b836fe1ef96bd12a0ba7

RESEARCH PRODUCT

Oxidative stress and innate immunity responses in cigarette smoke stimulated nasal epithelial cells

Elisabetta PaceSerena Di VincenzoLuigi LanataMaria FerraroMark GjomarkajAndreina BrunoStefania Gerbino

subject

LipopolysaccharidesNecrosisNeutrophilsPhalloidineCARB CSE Cigarette smoke LPS Nasal epithelial cells ROS Reactive oxygen species TLR4 carbocysteine cigarette smoke extracts lipolysaccharide reactive oxygen species toll like receptor 4Fluorescent Antibody TechniqueApoptosisMucous membrane of noseCell SeparationBiologyToxicologymedicine.disease_causeCell LineNecrosisSmokeTobaccomedicineHumansExpectorantschemistry.chemical_classificationReactive oxygen speciesInnate immune systemCarbocysteineEpithelial CellsCarbocysteineTobacco ProductsGeneral MedicineActinsImmunity InnateToll-Like Receptor 4Nasal MucosaOxidative StresschemistryApoptosisImmunologyTLR4medicine.symptomReactive Oxygen SpeciesOxidative stress

description

Cigarette smoke extracts (CSE) may play a significant role in diseases of the upper airway including chronic rhinosinusitis. Even short term exposure of cigarette smoke has adverse effects on mitochondrial functions and redox homeostasis in tissues which may progress to further complications associated with chronic smoking. Cigarette smoke alters toll-like receptor 4 (TLR4) expression and activation in bronchial epithelial cells. Carbocysteine is an anti-oxidant and mucolytic agent. The effects of carbocysteine on CSE induced oxidative stress and on associated innate immune and inflammatory responses in nasal epithelial cells are largely unknown. The present study was aimed to assess in CSE stimulated nasal epithelial cells (RPMI 2650) the effects of carbocysteine (10(-4)M) on: cell survival, intracellular reactive oxygen species (ROS) production, TLR4 expression, LPS binding and neutrophil chemotaxis (actin reorganization). We found that CSE increased ROS production, TLR4 expression, LPS binding and neutrophil chemotaxis and all these events were counteracted by pre-incubating CSE stimulated RPMI 2650 cells with carbocysteine. In conclusion, the present study provides compelling evidence that carbocysteine may be considered a promising therapeutic strategy in chronic inflammatory nasal diseases.

yearjournalcountryeditionlanguage
2013-07-23Toxicology in Vitro
https://doi.org/10.1016/j.tiv.2013.11.004