PPARs in Alveolar Macrophage Biology

PPARs, most notably PPAR-γ, play a crucial role in regulating the activation of alveolar macrophages, which in turn occupy a pivotal place in the immune response to pathogens and particulates drawn in with inspired air. In this review, we describe the dual role of the alveolar macrophage as both a f...

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Main Authors: Monica R. Smith, Theodore J. Standiford, Raju C. Reddy
Format: Article
Language:English
Published: Wiley 2007-01-01
Series:PPAR Research
Online Access:http://dx.doi.org/10.1155/2007/23812
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author Monica R. Smith
Theodore J. Standiford
Raju C. Reddy
author_facet Monica R. Smith
Theodore J. Standiford
Raju C. Reddy
author_sort Monica R. Smith
collection DOAJ
description PPARs, most notably PPAR-γ, play a crucial role in regulating the activation of alveolar macrophages, which in turn occupy a pivotal place in the immune response to pathogens and particulates drawn in with inspired air. In this review, we describe the dual role of the alveolar macrophage as both a first-line defender through its phagocytotic activity and a regulator of the immune response. Depending on its state of activation, the alveolar macrophage may either enhance or suppress different aspects of immune function in the lung. We then review the role of PPAR-γ and its ligands in deactivating alveolar macrophages—thus limiting the inflammatory response that, if unchecked, could threaten the essential respiratory function of the alveolus—while upregulating the cell's phagocytotic activity. Finally, we examine the role that inadequate or inappropriate PPAR-γ responses play in specific lung diseases.
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spelling doaj-art-c644afc20a074ecaa0e225f0bb5c31772025-02-03T06:00:16ZengWileyPPAR Research1687-47571687-47652007-01-01200710.1155/2007/2381223812PPARs in Alveolar Macrophage BiologyMonica R. Smith0Theodore J. Standiford1Raju C. Reddy2Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, MI 48109-2200, USADivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, MI 48109-2200, USADivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, MI 48109-2200, USAPPARs, most notably PPAR-γ, play a crucial role in regulating the activation of alveolar macrophages, which in turn occupy a pivotal place in the immune response to pathogens and particulates drawn in with inspired air. In this review, we describe the dual role of the alveolar macrophage as both a first-line defender through its phagocytotic activity and a regulator of the immune response. Depending on its state of activation, the alveolar macrophage may either enhance or suppress different aspects of immune function in the lung. We then review the role of PPAR-γ and its ligands in deactivating alveolar macrophages—thus limiting the inflammatory response that, if unchecked, could threaten the essential respiratory function of the alveolus—while upregulating the cell's phagocytotic activity. Finally, we examine the role that inadequate or inappropriate PPAR-γ responses play in specific lung diseases.http://dx.doi.org/10.1155/2007/23812
spellingShingle Monica R. Smith
Theodore J. Standiford
Raju C. Reddy
PPARs in Alveolar Macrophage Biology
PPAR Research
title PPARs in Alveolar Macrophage Biology
title_full PPARs in Alveolar Macrophage Biology
title_fullStr PPARs in Alveolar Macrophage Biology
title_full_unstemmed PPARs in Alveolar Macrophage Biology
title_short PPARs in Alveolar Macrophage Biology
title_sort ppars in alveolar macrophage biology
url http://dx.doi.org/10.1155/2007/23812
work_keys_str_mv AT monicarsmith pparsinalveolarmacrophagebiology
AT theodorejstandiford pparsinalveolarmacrophagebiology
AT rajucreddy pparsinalveolarmacrophagebiology