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Title: Effects of corticosteroid, montelukast and iNOS inhibition on distal lung with chronic inflammation
Authors: SOUZA, Flavia Castro RibasGOBBATO, Nathalia BrandaoMACIEL, Rafaela GuerraPRADO, Carla MaximoMARTINS, Milton ArrudaLEICK, Edna A.TIBERIO, Iolanda F. L. Calvo
Citation: RESPIRATORY PHYSIOLOGY & NEUROBIOLOGY, v.185, n.2, p.435-445, 2013
Abstract: We evaluated the effects of anti-iNOS (1400W - W) associated with leukotriene antagonist (montelukast - M) or corticosteroid (dexamethasone - D) on distal lung of guinea pigs (GP) with chronic pulmonary inflammation. Methods: GP were inhaled with ovalbumin (OVA-2x/week/4 weeks), treated with M (OVAM), D (OVAD) and/or W (OVAW, OVADW, OVAMW) and distal lungs were evaluated by morphometry. Results: Isolated treatments were not sufficient to reduce all parameters. In OVADW, all parameters were reduced with greater reduction in elastic fibers, TIMP-1, IL-4, IL-5, IFN-gamma and PGF2-alpha compared with OVAD (p<0.05). OVAMW potentiated the reduction of actin, elastic fibers, TIMP-1, IL-4, IL-5, TGFbeta, IFN-gamma, iNOS, and PGF2-alpha to a greater extent than OVAM (p<0.05). A reduction of TIMP-1, IL-4, IL-5, TGF-beta, IFN-gamma and iNOS was observed in OVADW compared with OVAMW (p<0.05). Conclusions: Although anti-iNOS paired with montelukast or dexamethasone yields better results than isolated treatments, the most effective pairing for controlling inflammation, oxidative stress and remodeling in this asthma model was found to be corticosteroids and anti-iNOS. (C) 2012 Published by Elsevier B.V.
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Artigos e Materiais de Revistas Científicas - FM/MCM
Departamento de Clínica Médica - FM/MCM

Artigos e Materiais de Revistas Científicas - FM/MPT
Departamento de Patologia - FM/MPT

Artigos e Materiais de Revistas Científicas - HC/ICHC
Instituto Central - HC/ICHC

Artigos e Materiais de Revistas Científicas - LIM/20
LIM/20 - Laboratório de Terapêutica Experimental

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