Origin and production of inflammatory perivascular macrophages in pulmonary hypertension

Myeloid cells, including monocytes and macrophages participate in steady state immune homeostasis and help mount the adaptive immune response during infection. The function and production of these cells in sterile inflammation, such as pulmonary hypertension (PH), is understudied. Emerging data indi...

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Bibliographic Details
Published in:Cytokine (Philadelphia, Pa.) Pa.), 2017-12, Vol.100, p.11-15
Main Authors: Florentin, Jonathan, Dutta, Partha
Format: Article
Language:English
Subjects:
Alveolar macrophages
Animals
Blood Pressure
Cell Differentiation
Cell Proliferation
Hematopoietic Stem Cells - physiology
HSC progenitors
Humans
Hypertension, Pulmonary - immunology
Hypertension, Pulmonary - physiopathology
Inflammation
Interstitial macrophages
Macrophages - immunology
Macrophages - physiology
Macrophages, Alveolar - immunology
Macrophages, Alveolar - physiology
Mice
Monocytes - immunology
Monocytes - physiology
Pneumonia - immunology
Pneumonia - physiopathology
Pulmonary hypertension
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Summary:Myeloid cells, including monocytes and macrophages participate in steady state immune homeostasis and help mount the adaptive immune response during infection. The function and production of these cells in sterile inflammation, such as pulmonary hypertension (PH), is understudied. Emerging data indicate that pulmonary inflammation mediated by lung perivascular macrophages is a key pathogenic driver of pulmonary remodeling leading to increased right ventricular systolic pressure (RVSP). However, the origin of these macrophages in pulmonary inflammation is unknown. Inflammatory monocytes, the precursors of pathogenic macrophages, are derived from hematopoietic stem and progenitor cells (HSPC) in the bone marrow and spleen during acute and chronic inflammation. Understanding the role of these organs in monocytopoiesis, and the mechanisms of HSPC proliferation and differentiation in PH are important to discover therapeutic targets curbing inflammation. This review will summarize the current limited knowledge of the origin of lung macrophage subsets and over-production of inflammatory monocytes in PH.
ISSN:1043-4666
1096-0023
DOI:10.1016/j.cyto.2017.08.015