Heme Oxygenase-1 and Carbon Monoxide: Emerging Therapeutic Targets in Inflammation and Allergy

Author(s): Hyun-Ock Pae, Yong C. Lee, Hun-Taeg Chung.

Journal Name: Recent Patents on Inflammation & Allergy Drug Discovery

Volume 2 , Issue 3 , 2008

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Abstract:

Cumulative evidence suggests that the induction of the antioxidant/anti-inflammatory heme oxygenase (HO)-1 may play a protective role in allergic inflammation. HO-1 suppresses mast cell degranulation and cytokine synthesis. The up-regulation of the HO-1 pathway has a significant protective effect against airway inflammation, mucus hypersecretion, and hyper-responsiveness in a model of allergic asthma. Moreover, HO-1 inhibits T cell-dependent skin inflammation and differentiation and function of antigen-presenting cells. The precise underlying mechanisms for HO-1- based protection against allergic inflammation are not yet completely understood, but appear to involve the protective effects of HO-1 by-products, such as carbon monoxide (CO), biliverdin/bilirubin and free iron. Among the HO-1 byproducts, CO has been shown to mimic some protective actions of HO-1 in allergic inflammations. This article reviews the latest knowledge, recent patent and studies on the protective roles and mechanisms of HO-1/CO in inflammation and allergy.

Keywords: Heme oxygenase-1, carbon monoxide, bilirubin, biliverdin, heme, inflammation, allergy, asthma, allergic rhinitis, atopic dermatitis

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Article Details

VOLUME: 2
ISSUE: 3
Year: 2008
Page: [159 - 165]
Pages: 7
DOI: 10.2174/187221308786241929
Price: $58

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