1
|
Koziol-White C, Gebski E, Cao G, Panettieri RA. Precision cut lung slices: an integrated ex vivo model for studying lung physiology, pharmacology, disease pathogenesis and drug discovery. Respir Res 2024; 25:231. [PMID: 38824592 PMCID: PMC11144351 DOI: 10.1186/s12931-024-02855-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Accepted: 05/18/2024] [Indexed: 06/03/2024] Open
Abstract
Precision Cut Lung Slices (PCLS) have emerged as a sophisticated and physiologically relevant ex vivo model for studying the intricacies of lung diseases, including fibrosis, injury, repair, and host defense mechanisms. This innovative methodology presents a unique opportunity to bridge the gap between traditional in vitro cell cultures and in vivo animal models, offering researchers a more accurate representation of the intricate microenvironment of the lung. PCLS require the precise sectioning of lung tissue to maintain its structural and functional integrity. These thin slices serve as invaluable tools for various research endeavors, particularly in the realm of airway diseases. By providing a controlled microenvironment, precision-cut lung slices empower researchers to dissect and comprehend the multifaceted interactions and responses within lung tissue, thereby advancing our understanding of pulmonary pathophysiology.
Collapse
Affiliation(s)
- Cynthia Koziol-White
- Rutgers Institute for Translational Medicine and Science, The State University of NJ, 08901, Rutgers, New Brunswick, NJ, USA.
| | - Eric Gebski
- Rutgers Institute for Translational Medicine and Science, The State University of NJ, 08901, Rutgers, New Brunswick, NJ, USA
| | - Gaoyaun Cao
- Rutgers Institute for Translational Medicine and Science, The State University of NJ, 08901, Rutgers, New Brunswick, NJ, USA
| | - Reynold A Panettieri
- Rutgers Institute for Translational Medicine and Science, The State University of NJ, 08901, Rutgers, New Brunswick, NJ, USA
| |
Collapse
|
2
|
Lam M, Lamanna E, Organ L, Donovan C, Bourke JE. Perspectives on precision cut lung slices-powerful tools for investigation of mechanisms and therapeutic targets in lung diseases. Front Pharmacol 2023; 14:1162889. [PMID: 37261291 PMCID: PMC10228656 DOI: 10.3389/fphar.2023.1162889] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 04/19/2023] [Indexed: 06/02/2023] Open
Abstract
Precision cut lung slices (PCLS) have emerged as powerful experimental tools for respiratory research. Pioneering studies using mouse PCLS to visualize intrapulmonary airway contractility have been extended to pulmonary arteries and for assessment of novel bronchodilators and vasodilators as therapeutics. Additional disease-relevant outcomes, including inflammatory, fibrotic, and regenerative responses, are now routinely measured in PCLS from multiple species, including humans. This review provides an overview of established and innovative uses of PCLS as an intermediary between cellular and organ-based studies and focuses on opportunities to increase their application to investigate mechanisms and therapeutic targets to oppose excessive airway contraction and fibrosis in lung diseases.
Collapse
Affiliation(s)
- Maggie Lam
- Department of Pharmacology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia
- Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia
| | - Emma Lamanna
- Department of Pharmacology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- Institut Pasteur, Unit of Antibodies in Therapy and Pathology, INSERM UMR1222, Paris, France
| | - Louise Organ
- Department of Pharmacology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Chantal Donovan
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia
- Hunter Medical Research Institute and The University of Newcastle, Newcastle, NSW, Australia
| | - Jane E. Bourke
- Department of Pharmacology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia
| |
Collapse
|
3
|
Lingel I, Wilburn AN, Hargis J, McAlees JW, Laumonnier Y, Chougnet CA, Deshmukh H, König P, Lewkowich IP, Schmudde I. Prenatal antibiotics exposure does not influence experimental allergic asthma in mice. Front Immunol 2022; 13:937577. [PMID: 36032166 PMCID: PMC9399857 DOI: 10.3389/fimmu.2022.937577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 07/18/2022] [Indexed: 11/13/2022] Open
Abstract
Changes in microbiome (dysbiosis) contribute to severity of allergic asthma. Preexisting epidemiological studies in humans correlate perinatal dysbiosis with increased long-term asthma severity. However, these studies cannot discriminate between prenatal and postnatal effects of dysbiosis and suffer from a high variability of dysbiotic causes ranging from antibiotic treatment, delivery by caesarian section to early-life breastfeeding practices. Given that maternal antibiotic exposure in mice increases the risk of newborn bacterial pneumonia in offspring, we hypothesized that prenatal maternal antibiotic-induced dysbiosis induces long-term immunological effects in the offspring that also increase long-term asthma severity. Therefore, dams were exposed to antibiotics (gentamycin, ampicillin, vancomycin) from embryonic day 15 until birth. Six weeks later, asthma was induced in the offspring by repeated applications of house dust mite extract. Airway function, cytokine production, pulmonary cell composition and distribution were assessed. Our study revealed that prenatally induced dysbiosis in mice led to an increase in pulmonary Th17+ non-conventional T cells with limited functional effect on airway resistance, pro-asthmatic Th2/Th17 cytokine production, pulmonary localization and cell-cell contacts. These data indicate that dysbiosis-related immune-modulation with long-term effects on asthma development occurs to a lesser extent prenatally and will allow to focus future studies on more decisive postnatal timeframes.
Collapse
Affiliation(s)
- Imke Lingel
- Institute of Anatomy, University of Lübeck, Lübeck, Germany
- Airway Research Center North (ARCN), Member of the German Center for Lung Research (DZL), Lübeck, Germany
| | - Adrienne N. Wilburn
- Division of Immunobiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
- Immunology Graduate Program, University of Cincinnati, Cincinnati, OH, United States
| | - Julie Hargis
- Division of Immunobiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - Jaclyn W. McAlees
- Division of Immunobiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - Yves Laumonnier
- Airway Research Center North (ARCN), Member of the German Center for Lung Research (DZL), Lübeck, Germany
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Claire A. Chougnet
- Division of Immunobiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
- Department of Pediatrics, University of Cincinnati, Cincinnati, OH, United States
| | - Hitesh Deshmukh
- Department of Pediatrics, University of Cincinnati, Cincinnati, OH, United States
- Division of Neonatology and Pulmonary Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - Peter König
- Institute of Anatomy, University of Lübeck, Lübeck, Germany
- Airway Research Center North (ARCN), Member of the German Center for Lung Research (DZL), Lübeck, Germany
| | - Ian P. Lewkowich
- Division of Immunobiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
- Department of Pediatrics, University of Cincinnati, Cincinnati, OH, United States
| | - Inken Schmudde
- Institute of Anatomy, University of Lübeck, Lübeck, Germany
- Airway Research Center North (ARCN), Member of the German Center for Lung Research (DZL), Lübeck, Germany
- *Correspondence: Inken Schmudde,
| |
Collapse
|
4
|
Ferguson SK, Pak DI, Hopkins JL, Harral JW, Redinius KM, Loomis Z, Stenmark KR, Borden MA, Schroeder T, Irwin DC. Pre-clinical assessment of a water-in-fluorocarbon emulsion for the treatment of pulmonary vascular diseases. Drug Deliv 2019; 26:147-157. [PMID: 30822171 PMCID: PMC6407583 DOI: 10.1080/10717544.2019.1568621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Hypoxic pulmonary vasoconstriction (HPV) is a well-characterized vascular response to low oxygen pressures and is involved in life-threatening conditions such as high-altitude pulmonary edema (HAPE) and pulmonary arterial hypertension (PAH). While the efficacy of oral therapies can be affected by drug metabolism, or dose-limiting systemic toxicity, inhaled treatment via pressured metered dose inhalers (pMDI) may be an effective, nontoxic, practical alternative. We hypothesized that a stable water-in-perfluorooctyl bromide (PFOB) emulsion that provides solubility in common pMDI propellants, engineered for intrapulmonary delivery of pulmonary vasodilators, reverses HPV during acute hypoxia (HX). Male Sprague Dawley rats received two 10-min bouts of HX (13% O2) with 20 min of room air and drug application between exposures. Treatment groups: intrapulmonary delivery (PUL) of (1) saline; (2) ambrisentan in saline (0.1 mg/kg); (3) empty emulsion; (4) emulsion encapsulating ambrisentan or sodium nitrite (NaNO2) (0.1 and 0.5 mg/kg each); and intravenous (5) ambrisentan (0.1 mg/kg) or (6) NaNO2 (0.5 mg/kg). Neither PUL of saline or empty emulsion, nor infusions of drugs prevented pulmonary artery pressure (PAP) elevation (32.6 ± 3.2, 31.5 ± 1.2, 29.3 ± 1.8, and 30.2 ± 2.5 mmHg, respectively). In contrast, PUL of aqueous ambrisentan and both drug emulsions reduced PAP by 20–30% during HX, compared to controls. IL6 expression in bronchoalveolar lavage fluid and whole lung 24 h post-PUL did not differ among cohorts. We demonstrate proof-of-concept for delivering pulmonary vasodilators via aerosolized water-in-PFOB emulsion. This concept opens a potentially feasible and effective route of treating pulmonary vascular pathologies via pMDI.
Collapse
Affiliation(s)
- Scott K Ferguson
- a Cardiovascular and Pulmonary Research Laboratory, Department of Medicine , University of Colorado Denver, Anschutz Medical Campus , Aurora , CO , USA
| | - David I Pak
- a Cardiovascular and Pulmonary Research Laboratory, Department of Medicine , University of Colorado Denver, Anschutz Medical Campus , Aurora , CO , USA.,b Department of Mechanical Engineering , University of Colorado , Boulder , CO , USA
| | - Justin L Hopkins
- b Department of Mechanical Engineering , University of Colorado , Boulder , CO , USA
| | - Julie W Harral
- a Cardiovascular and Pulmonary Research Laboratory, Department of Medicine , University of Colorado Denver, Anschutz Medical Campus , Aurora , CO , USA
| | - Katherine M Redinius
- a Cardiovascular and Pulmonary Research Laboratory, Department of Medicine , University of Colorado Denver, Anschutz Medical Campus , Aurora , CO , USA
| | - Zoe Loomis
- a Cardiovascular and Pulmonary Research Laboratory, Department of Medicine , University of Colorado Denver, Anschutz Medical Campus , Aurora , CO , USA
| | - Kurt R Stenmark
- a Cardiovascular and Pulmonary Research Laboratory, Department of Medicine , University of Colorado Denver, Anschutz Medical Campus , Aurora , CO , USA
| | - Mark A Borden
- b Department of Mechanical Engineering , University of Colorado , Boulder , CO , USA
| | - Thies Schroeder
- c Department of Biochemistry , Johannes-Gutenberg University , Mainz , Germany
| | - David C Irwin
- a Cardiovascular and Pulmonary Research Laboratory, Department of Medicine , University of Colorado Denver, Anschutz Medical Campus , Aurora , CO , USA
| |
Collapse
|
5
|
Preissner M, Murrie RP, Bresee C, Carnibella RP, Fouras A, Weir EK, Dubsky S, Pinar IP, Jones HD. Application of a novel in vivo imaging approach to measure pulmonary vascular responses in mice. Physiol Rep 2018; 6:e13875. [PMID: 30284390 PMCID: PMC6170880 DOI: 10.14814/phy2.13875] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 08/24/2018] [Indexed: 12/19/2022] Open
Abstract
Noninvasive imaging of the murine pulmonary vasculature is challenging due to the small size of the animal, limits of resolution of the imaging technology, terminal nature of the procedure, or the need for intravenous contrast. We report the application of laboratory-based high-speed, high-resolution x-ray imaging, and image analysis to detect quantitative changes in the pulmonary vascular tree over time in the same animal without the need for intravenous contrast. Using this approach, we detected an increased number of vessels in the pulmonary vascular tree of animals after 30 min of recovery from a brief exposure to inspired gas with 10% oxygen plus 5% carbon dioxide (mean ± standard deviation: 2193 ± 382 at baseline vs. 6177 ± 1171 at 30 min of recovery; P < 0.0001). In a separate set of animals, we showed that the total pulmonary blood volume increased (P = 0.0412) while median vascular diameter decreased from 0.20 mm (IQR: 0.15-0.28 mm) to 0.18 mm (IQR: 0.14-0.26 mm; P = 0.0436) over the respiratory cycle from end-expiration to end-inspiration. These findings suggest that the noninvasive, nonintravenous contrast imaging approach reported here can detect dynamic responses of the murine pulmonary vasculature and may be a useful tool in studying these responses in models of disease.
Collapse
Affiliation(s)
- Melissa Preissner
- Department of Mechanical and Aerospace EngineeringMonash UniversityMelbourneVictoriaAustralia
| | - Rhiannon P. Murrie
- Department of Mechanical and Aerospace EngineeringMonash UniversityMelbourneVictoriaAustralia
| | - Catherine Bresee
- Cedars‐Sinai Medical CenterBiostatistics & Bioinformatics Research InstituteLos AngelesCalifornia
| | | | - Andreas Fouras
- Department of Mechanical and Aerospace EngineeringMonash UniversityMelbourneVictoriaAustralia
- 4Dx LimitedMelbourneVictoriaAustralia
- Department of Biomedical SciencesCedars‐Sinai Medical CenterBiomedical Imaging Research InstituteLos AngelesCalifornia
| | - E. Kenneth Weir
- Department of MedicineUniversity of MinnesotaMinneapolisMinnesota
| | - Stephen Dubsky
- Department of Mechanical and Aerospace EngineeringMonash UniversityMelbourneVictoriaAustralia
| | - Isaac P. Pinar
- Department of Mechanical and Aerospace EngineeringMonash UniversityMelbourneVictoriaAustralia
| | - Heather D. Jones
- Department of Biomedical SciencesCedars‐Sinai Medical CenterBiomedical Imaging Research InstituteLos AngelesCalifornia
| |
Collapse
|
6
|
Smith KA, Schumacker PT. Sensors and signals: the role of reactive oxygen species in hypoxic pulmonary vasoconstriction. J Physiol 2018; 597:1033-1043. [PMID: 30091476 DOI: 10.1113/jp275852] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 07/20/2018] [Indexed: 12/12/2022] Open
Abstract
When lung cells experience hypoxia, the functional response, termed hypoxic pulmonary vasoconstriction, activates a multitude of pathways with the goal of optimizing gas exchange. While previously controversial, overwhelming evidence now suggests that increased reactive oxygen species - produced at complex III of the mitochondrial electron transport chain and released into the intermembrane space - is the cellular oxygen signal responsible for triggering hypoxic pulmonary vasoconstriction. The increased reactive oxygen species (ROS) activate many downstream targets that ultimately lead to increased intracellular ionized calcium concentration and contraction of pulmonary arterial smooth muscle cells. While the specific targets of ROS signals are not completely understood, it is clear that this signalling pathway is critical for development and for normal lung function in newborns and adults.
Collapse
Affiliation(s)
- Kimberly A Smith
- Department of Pediatrics, Division of Neonatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Paul T Schumacker
- Department of Pediatrics, Division of Neonatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| |
Collapse
|
7
|
Phosphocholine-Modified Lipooligosaccharides of Haemophilus influenzae Inhibit ATP-Induced IL-1β Release by Pulmonary Epithelial Cells. Molecules 2018; 23:molecules23081979. [PMID: 30096783 PMCID: PMC6222299 DOI: 10.3390/molecules23081979] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 07/19/2018] [Accepted: 07/27/2018] [Indexed: 12/11/2022] Open
Abstract
Phosphocholine-modified bacterial cell wall components are virulence factors enabling immune evasion and permanent colonization of the mammalian host, by mechanisms that are poorly understood. Recently, we demonstrated that free phosphocholine (PC) and PC-modified lipooligosaccharides (PC-LOS) from Haemophilus influenzae, an opportunistic pathogen of the upper and lower airways, function as unconventional nicotinic agonists and efficiently inhibit the ATP-induced release of monocytic IL-1β. We hypothesize that H. influenzae PC-LOS exert similar effects on pulmonary epithelial cells and on the complex lung tissue. The human lung carcinoma-derived epithelial cell lines A549 and Calu-3 were primed with lipopolysaccharide from Escherichia coli followed by stimulation with ATP in the presence or absence of PC or PC-LOS or LOS devoid of PC. The involvement of nicotinic acetylcholine receptors was tested using specific antagonists. We demonstrate that PC and PC-LOS efficiently inhibit ATP-mediated IL-1β release by A549 and Calu-3 cells via nicotinic acetylcholine receptors containing subunits α7, α9, and/or α10. Primed precision-cut lung slices behaved similarly. We conclude that H. influenzae hijacked an endogenous anti-inflammatory cholinergic control mechanism of the lung to evade innate immune responses of the host. These findings may pave the way towards a host-centered antibiotic treatment of chronic airway infections with H. influenzae.
Collapse
|
8
|
Hoffmann FM, Berger JL, Lingel I, Laumonnier Y, Lewkowich IP, Schmudde I, König P. Distribution and Interaction of Murine Pulmonary Phagocytes in the Naive and Allergic Lung. Front Immunol 2018; 9:1046. [PMID: 29868009 PMCID: PMC5964136 DOI: 10.3389/fimmu.2018.01046] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Accepted: 04/26/2018] [Indexed: 12/19/2022] Open
Abstract
The division of labor between pulmonary phagocytic subsets [macrophage/monocyte and dendritic cell (DC) subpopulations] has been described at the functional level. However, whether these lung phagocytes also display unique spatial distribution remains unclear. Here, to analyze cellular distribution in lung compartments and contacts between phagocyte subpopulations, we established an immunohistochemistry (IHC)-based method to clearly identify murine lung phagocyte subsets in situ based on differential expression of CD11c, CD11b, MHC-II, Langerin and mPDCA-1. Furthermore, we investigated subset-specific functional differences in antigen uptake and spatial changes upon allergic sensitization. Our staining allowed the distinction between alveolar macrophages (AMs), interstitial macrophage (IM) subpopulations, CD11b+ DC subpopulations, CD103+ DCs, and plasmacytoid DCs (pDCs). We identified interstitial regions between airways and around airways as regions of IM/CD11b+ DC/CD103+ DC clusters, where a subset of IMs (IM2) and CD103+ DCs formed intense contacts that decreased upon allergic sensitization. These data indicate functional interactions between both cell types either in steady state or after antigen encounter affecting the development of allergies or tolerance. Furthermore, we observed major antigen uptake in AMs and IMs rather than DC subpopulations that was not restricted to airways and adjacent areas. This will enable to focus future studies to immunologically relevant cellular interactions and to unravel which cells are tipping the balance between pro-inflammatory immune responses or tolerance.
Collapse
Affiliation(s)
- Franziska M Hoffmann
- Institute of Anatomy, University of Lübeck, Lübeck, Germany.,Airway Research Center North (ARCN), German Center for Lung Research (DZL), Lübeck, Germany
| | - Johann L Berger
- Institute of Anatomy, University of Lübeck, Lübeck, Germany.,Airway Research Center North (ARCN), German Center for Lung Research (DZL), Lübeck, Germany
| | - Imke Lingel
- Institute of Anatomy, University of Lübeck, Lübeck, Germany.,Airway Research Center North (ARCN), German Center for Lung Research (DZL), Lübeck, Germany
| | - Yves Laumonnier
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Ian P Lewkowich
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.,Department of Pediatrics, University of Cincinnati, Cincinnati, OH, United States
| | - Inken Schmudde
- Institute of Anatomy, University of Lübeck, Lübeck, Germany.,Airway Research Center North (ARCN), German Center for Lung Research (DZL), Lübeck, Germany
| | - Peter König
- Institute of Anatomy, University of Lübeck, Lübeck, Germany.,Airway Research Center North (ARCN), German Center for Lung Research (DZL), Lübeck, Germany
| |
Collapse
|
9
|
Crnkovic S, Marsh LM, El Agha E, Voswinckel R, Ghanim B, Klepetko W, Stacher‐Priehse E, Olschewski H, Bloch W, Bellusci S, Olschewski A, Kwapiszewska G. Resident cell lineages are preserved in pulmonary vascular remodeling. J Pathol 2018; 244:485-498. [PMID: 29359814 PMCID: PMC5903372 DOI: 10.1002/path.5044] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 12/17/2017] [Accepted: 01/14/2018] [Indexed: 02/06/2023]
Abstract
Pulmonary vascular remodeling is the main pathological hallmark of pulmonary hypertension disease. We undertook a comprehensive and multilevel approach to investigate the origin of smooth muscle actin-expressing cells in remodeled vessels. Transgenic mice that allow for specific, inducible, and permanent labeling of endothelial (Cdh5-tdTomato), smooth muscle (Acta2-, Myh11-tdTomato), pericyte (Cspg4-tdTomato), and fibroblast (Pdgfra-tdTomato) lineages were used to delineate the cellular origins of pulmonary vascular remodeling. Mapping the fate of major lung resident cell types revealed smooth muscle cells (SMCs) as the predominant source of cells that populate remodeled pulmonary vessels in chronic hypoxia and allergen-induced murine models. Combining in vivo cell type-specific, time-controlled labeling of proliferating cells with a pulmonary artery phenotypic explant assay, we identified proliferation of SMCs as an underlying remodeling pathomechanism. Multicolor immunofluorescence analysis showed a preserved pattern of cell type marker localization in murine and human pulmonary arteries, in both donors and idiopathic pulmonary arterial hypertension (IPAH) patients. Whilst neural glial antigen 2 (chondroitin sulfate proteoglycan 4) labeled mostly vascular supportive cells with partial overlap with SMC markers, PDGFRα-expressing cells were observed in the perivascular compartment. The luminal vessel side was lined by a single cell layer expressing endothelial markers followed by an adjacent and distinct layer defined by SMC marker expression and pronounced thickening in remodeled vessels. Quantitative flow cytometric analysis of single cell digests of diverse pulmonary artery layers showed the preserved separation into two discrete cell populations expressing either endothelial cell (EC) or SMC markers in human remodeled vessels. Additionally, we found no evidence of overlap between EC and SMC ultrastructural characteristics using electron microscopy in either donor or IPAH arteries. Lineage-specific marker expression profiles are retained during pulmonary vascular remodeling without any indication of cell type conversion. The expansion of resident SMCs is the major underlying and evolutionarily conserved paradigm of pulmonary vascular disease pathogenesis. © 2018 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of Pathological Society of Great Britain and Ireland.
Collapse
MESH Headings
- Actins/genetics
- Actins/metabolism
- Animals
- Antigens/genetics
- Antigens/metabolism
- Antigens, CD/genetics
- Antigens, CD/metabolism
- Cadherins/genetics
- Cadherins/metabolism
- Cell Lineage
- Chronic Disease
- Disease Models, Animal
- Familial Primary Pulmonary Hypertension/metabolism
- Familial Primary Pulmonary Hypertension/pathology
- Familial Primary Pulmonary Hypertension/physiopathology
- Fluorescent Antibody Technique
- Genes, Reporter
- Humans
- Hypoxia/genetics
- Hypoxia/metabolism
- Hypoxia/pathology
- Hypoxia/physiopathology
- Luminescent Proteins/genetics
- Luminescent Proteins/metabolism
- Lung/blood supply
- Mice, Transgenic
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Muscle, Smooth, Vascular/physiopathology
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- Phenotype
- Proteoglycans/genetics
- Proteoglycans/metabolism
- Pulmonary Artery/metabolism
- Pulmonary Artery/pathology
- Pulmonary Artery/physiopathology
- Receptor, Platelet-Derived Growth Factor alpha/genetics
- Receptor, Platelet-Derived Growth Factor alpha/metabolism
- Respiratory Hypersensitivity/genetics
- Respiratory Hypersensitivity/metabolism
- Respiratory Hypersensitivity/pathology
- Respiratory Hypersensitivity/physiopathology
- Vascular Remodeling
- Red Fluorescent Protein
Collapse
Affiliation(s)
- Slaven Crnkovic
- Ludwig Boltzmann Institute for Lung Vascular ResearchGrazAustria
- Department of PhysiologyMedical University of GrazGrazAustria
| | - Leigh M Marsh
- Ludwig Boltzmann Institute for Lung Vascular ResearchGrazAustria
| | - Elie El Agha
- Excellence Cluster Cardio‐Pulmonary System (ECCPS), Member of the German Center for Lung Research (DZL), Universities of Giessen and Marburg Lung Center (UGMLC)Justus Liebig University GiessenGiessenGermany
| | | | - Bahil Ghanim
- Department of Thoracic SurgeryMedical University of ViennaViennaAustria
| | - Walter Klepetko
- Department of Thoracic SurgeryMedical University of ViennaViennaAustria
| | - Elvira Stacher‐Priehse
- Ludwig Boltzmann Institute for Lung Vascular ResearchGrazAustria
- Institute of PathologyMedical University of GrazGrazAustria
| | - Horst Olschewski
- Department of Internal Medicine, Division of PulmonologyMedical University of GrazGrazAustria
| | | | - Saverio Bellusci
- Excellence Cluster Cardio‐Pulmonary System (ECCPS), Member of the German Center for Lung Research (DZL), Universities of Giessen and Marburg Lung Center (UGMLC)Justus Liebig University GiessenGiessenGermany
| | - Andrea Olschewski
- Ludwig Boltzmann Institute for Lung Vascular ResearchGrazAustria
- Department of PhysiologyMedical University of GrazGrazAustria
| | - Grazyna Kwapiszewska
- Ludwig Boltzmann Institute for Lung Vascular ResearchGrazAustria
- Department of PhysiologyMedical University of GrazGrazAustria
| |
Collapse
|
10
|
Strielkov I, Pak O, Sommer N, Weissmann N. Recent advances in oxygen sensing and signal transduction in hypoxic pulmonary vasoconstriction. J Appl Physiol (1985) 2017; 123:1647-1656. [PMID: 28751366 DOI: 10.1152/japplphysiol.00103.2017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Hypoxic pulmonary vasoconstriction (HPV) is a physiological reaction, which adapts lung perfusion to regional ventilation and optimizes gas exchange. Impaired HPV may cause systemic hypoxemia, while generalized HPV contributes to the development of pulmonary hypertension. The triggering mechanisms underlying HPV are still not fully elucidated. Several hypotheses are currently under debate, including a possible decrease as well as an increase in reactive oxygen species as a triggering event. Recent findings suggest an increase in the production of reactive oxygen species in pulmonary artery smooth muscle cells by complex III of the mitochondrial electron transport chain and occurrence of oxygen sensing at complex IV. Other essential components are voltage-dependent potassium and possibly L-type, transient receptor potential channel 6, and transient receptor potential vanilloid 4 channels. The release of arachidonic acid metabolites appears also to be involved in HPV regulation. Further investigation of the HPV mechanisms will facilitate the development of novel therapeutic strategies for the treatment of HPV-related disorders.
Collapse
Affiliation(s)
- Ievgen Strielkov
- Excellence Cluster Cardiopulmonary System, University of Giessen Lung Center, German Center for Lung Research (DZL), Justus-Liebig-University, Giessen , Germany
| | - Oleg Pak
- Excellence Cluster Cardiopulmonary System, University of Giessen Lung Center, German Center for Lung Research (DZL), Justus-Liebig-University, Giessen , Germany
| | - Natasha Sommer
- Excellence Cluster Cardiopulmonary System, University of Giessen Lung Center, German Center for Lung Research (DZL), Justus-Liebig-University, Giessen , Germany
| | - Norbert Weissmann
- Excellence Cluster Cardiopulmonary System, University of Giessen Lung Center, German Center for Lung Research (DZL), Justus-Liebig-University, Giessen , Germany
| |
Collapse
|
11
|
Lyons-Cohen MR, Thomas SY, Cook DN, Nakano H. Precision-cut Mouse Lung Slices to Visualize Live Pulmonary Dendritic Cells. J Vis Exp 2017. [PMID: 28448013 DOI: 10.3791/55465] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Inhalation of allergens and pathogens elicits multiple changes in a variety of immune cell types in the lung. Flow cytometry is a powerful technique for quantitative analysis of cell surface proteins on immune cells, but it provides no information on the localization and migration patterns of these cells within the lung. Similarly, chemotaxis assays can be performed to study the potential of cells to respond to chemotactic factors in vitro, but these assays do not reproduce the complex environment of the intact lung. In contrast to these aforementioned techniques, the location of individual cell types within the lung can be readily visualized by generating Precision-cut Lung Slices (PCLS), staining them with commercially available, fluorescently tagged antibodies, and visualizing the sections by confocal microscopy. PCLS can be used for both live and fixed lung tissue, and the slices can encompass areas as large as a cross section of an entire lobe. We have used this protocol to successfully visualize the location of a wide variety of cell types in the lung, including distinct types of dendritic cells, macrophages, neutrophils, T cells and B cells, as well as structural cells such as lymphatic, endothelial, and epithelial cells. The ability to visualize cellular interactions, such as those between dendritic cells and T cells, in live, three-dimensional lung tissue, can reveal how cells move within the lung and interact with one another at steady state and during inflammation. Thus, when used in combination with other procedures, such as flow cytometry and quantitative PCR, PCLS can contribute to a comprehensive understanding of cellular events that underlie allergic and inflammatory diseases of the lung.
Collapse
Affiliation(s)
- Miranda R Lyons-Cohen
- Immunity, Inflammation, and Disease Laboratory, Division of Intramural Research, National Institute of Environmental Health Sciences, NIH
| | - Seddon Y Thomas
- Immunity, Inflammation, and Disease Laboratory, Division of Intramural Research, National Institute of Environmental Health Sciences, NIH
| | - Donald N Cook
- Immunity, Inflammation, and Disease Laboratory, Division of Intramural Research, National Institute of Environmental Health Sciences, NIH
| | - Hideki Nakano
- Immunity, Inflammation, and Disease Laboratory, Division of Intramural Research, National Institute of Environmental Health Sciences, NIH;
| |
Collapse
|
12
|
Murtaza G, Mermer P, Goldenberg A, Pfeil U, Paddenberg R, Weissmann N, Lochnit G, Kummer W. TASK-1 potassium channel is not critically involved in mediating hypoxic pulmonary vasoconstriction of murine intra-pulmonary arteries. PLoS One 2017; 12:e0174071. [PMID: 28301582 PMCID: PMC5354433 DOI: 10.1371/journal.pone.0174071] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 03/02/2017] [Indexed: 11/26/2022] Open
Abstract
The two-pore domain potassium channel KCNK3 (TASK-1) is expressed in rat and human pulmonary artery smooth muscle cells. There, it is associated with hypoxia-induced signalling, and its dysfunction is linked to pathogenesis of human pulmonary hypertension. We here aimed to determine its role in hypoxic pulmonary vasoconstriction (HPV) in the mouse, and hence the suitability of this model for further mechanistic investigations, using appropriate inhibitors and TASK-1 knockout (KO) mice. RT-PCR revealed expression of TASK-1 mRNA in murine lungs and pre-acinar pulmonary arteries. Protein localization by immunohistochemistry and western blot was unreliable since all antibodies produced labelling also in TASK-1 KO organs/tissues. HPV was investigated by videomorphometric analysis of intra- (inner diameter: 25–40 μm) and pre-acinar pulmonary arteries (inner diameter: 41–60 μm). HPV persisted in TASK-1 KO intra-acinar arteries. Pre-acinar arteries developed initial HPV, but the response faded earlier (after 30 min) in KO vessels. This HPV pattern was grossly mimicked by the TASK-1 inhibitor anandamide in wild-type vessels. Hypoxia-provoked rise in pulmonary arterial pressure (PAP) in isolated ventilated lungs was affected neither by TASK-1 gene deficiency nor by the TASK-1 inhibitor A293. TASK-1 is dispensable for initiating HPV of murine intra-pulmonary arteries, but participates in sustained HPV specifically in pre-acinar arteries. This does not translate into abnormal rise in PAP. While there is compelling evidence that TASK-1 is involved in the pathogenesis of pulmonary arterial hypertension in humans, the mouse does not appear to serve as a suitable model to study the underlying molecular mechanisms.
Collapse
Affiliation(s)
- Ghulam Murtaza
- Institute of Anatomy and Cell Biology, Justus-Liebig-University, Giessen, Germany
- * E-mail:
| | - Petra Mermer
- Institute of Anatomy and Cell Biology, Justus-Liebig-University, Giessen, Germany
| | - Anna Goldenberg
- Institute of Anatomy and Cell Biology, Justus-Liebig-University, Giessen, Germany
| | - Uwe Pfeil
- Institute of Anatomy and Cell Biology, Justus-Liebig-University, Giessen, Germany
| | - Renate Paddenberg
- Institute of Anatomy and Cell Biology, Justus-Liebig-University, Giessen, Germany
| | - Nobert Weissmann
- Universities of Giessen and Marburg Lung Center, Justus-Liebig-University, Giessen, Germany
- German Center for Lung Research, Excellence Cluster Cardio-Pulmonary System, Justus-Liebig-University, Giessen, Germany
| | - Guenter Lochnit
- Institute of Biochemistry, Faculty of Medicine, Justus-Liebig University, Giessen, Germany
| | - Wolfgang Kummer
- Institute of Anatomy and Cell Biology, Justus-Liebig-University, Giessen, Germany
- German Center for Lung Research, Excellence Cluster Cardio-Pulmonary System, Justus-Liebig-University, Giessen, Germany
| |
Collapse
|
13
|
Goldenberg NM, Kuebler WM. Endothelial cell regulation of pulmonary vascular tone, inflammation, and coagulation. Compr Physiol 2016; 5:531-59. [PMID: 25880504 DOI: 10.1002/cphy.c140024] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The pulmonary endothelium represents a heterogeneous cell monolayer covering the luminal surface of the entire lung vasculature. As such, this cell layer lies at a critical interface between the blood, airways, and lung parenchyma, and must act as a selective barrier between these diverse compartments. Lung endothelial cells are able to produce and secrete mediators, display surface receptor, and cellular adhesion molecules, and metabolize circulating hormones to influence vasomotor tone, both local and systemic inflammation, and coagulation functions. In this review, we will explore the role of the pulmonary endothelium in each of these systems, highlighting key regulatory functions of the pulmonary endothelial cell, as well as novel aspects of the pulmonary endothelium in contrast to the systemic cell type. The interactions between pulmonary endothelial cells and both leukocytes and platelets will be discussed in detail, and wherever possible, elements of endothelial control over physiological and pathophysiological processes will be examined.
Collapse
Affiliation(s)
- Neil M Goldenberg
- The Keenan Research Centre for Biomedical Science of St. Michael's, Toronto, Ontario, Canada; Department of Anesthesia, University of Toronto, Ontario, Canada
| | - Wolfgang M Kuebler
- The Keenan Research Centre for Biomedical Science of St. Michael's, Toronto, Ontario, Canada; German Heart Institute Berlin, Germany; Institute of Physiology, Charité-Universitätsmedizin Berlin, Germany; Department of Surgery, University of Toronto, Ontario, Canada; Department of Physiology, University of Toronto, Ontario,Canada
| |
Collapse
|
14
|
Siemsen DW, Dobrinen E, Han S, Chiocchi K, Meissner N, Swain SD. Vascular Dysfunction in Pneumocystis-Associated Pulmonary Hypertension Is Related to Endothelin Response and Adrenomedullin Concentration. THE AMERICAN JOURNAL OF PATHOLOGY 2015; 186:259-69. [PMID: 26687815 DOI: 10.1016/j.ajpath.2015.10.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 09/29/2015] [Accepted: 10/22/2015] [Indexed: 10/22/2022]
Abstract
Pulmonary hypertension subsequent to an infectious disease can be due to vascular structural remodeling or to functional alterations within various vascular cell types. In our previous mouse model of Pneumocystis-associated pulmonary hypertension, we found that vascular remodeling was not responsible for observed increases in right ventricular pressures. Here, we report that the vascular dysfunction we observed could be explained by an enhanced response to endothelin-1 (20% greater reduction in lumen diameter, P ≤ 0.05), corresponding to an up-regulation of similar magnitude (P ≤ 0.05) of the endothelin A receptor in the lung tissue. This effect was potentially augmented by a decrease in production of the pulmonary vasodilator adrenomedullin of almost 70% (P ≤ 0.05). These changes did not occur in interferon-γ knockout mice similarly treated, which do not develop pulmonary hypertension under these circumstances. Surprisingly, we did not observe any relevant changes in the vascular endothelial nitric oxide synthase vasodilatory response, which is a common potential site of inflammatory alterations to pulmonary vascular function. Our results indicate the diverse mechanisms by which inflammatory responses to prior infections can cause functionally relevant changes in vascular responses in the lung, promoting the development of pulmonary hypertension.
Collapse
Affiliation(s)
- Dan W Siemsen
- Department of Microbiology and Immunology, Montana State University, Bozeman, Montana
| | - Erin Dobrinen
- Department of Microbiology and Immunology, Montana State University, Bozeman, Montana
| | - Soo Han
- Department of Microbiology and Immunology, Montana State University, Bozeman, Montana
| | - Kari Chiocchi
- Department of Microbiology and Immunology, Montana State University, Bozeman, Montana
| | - Nicole Meissner
- Department of Microbiology and Immunology, Montana State University, Bozeman, Montana
| | - Steve D Swain
- Department of Microbiology and Immunology, Montana State University, Bozeman, Montana.
| |
Collapse
|
15
|
Yoo HY, Park SJ, Kim HJ, Kim WK, Kim SJ. Integrative understanding of hypoxic pulmonary vasoconstriction using in vitro models: from ventilated/perfused lung to single arterial myocyte. Integr Med Res 2014; 3:180-188. [PMID: 28664095 PMCID: PMC5481745 DOI: 10.1016/j.imr.2014.08.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 08/27/2014] [Accepted: 08/27/2014] [Indexed: 10/25/2022] Open
Abstract
Contractile response of a pulmonary artery (PA) to hypoxia (hypoxic pulmonary vasoconstriction; HPV) is a unique physiological reaction. HPV is beneficial for the optimal distribution of blood flow to differentially ventilated alveolar regions in the lung, thereby preventing systemic hypoxemia. Numerous in vitro studies have been conducted to elucidate the mechanisms underlying HPV. These studies indicate that PA smooth muscle cells (PASMCs) sense lowers the oxygen partial pressure (PO2) and contract under hypoxia. As for the PO2-sensing molecules, a variety of ion channels in PASMCs had been suggested. Nonetheless, the modulator(s) of the ion channels alone cannot mimic HPV in the experiments using PA segments and/or isolated organs. We compared the hypoxic responses of PASMCs, PAs, lung slices, and total lungs using a variety of methods (e.g., patch-clamp technique, isometric contraction measurement, video analysis of precision-cut lung slices, and PA pressure measurement in ventilated/perfused lungs). In this review, the relevant results are compared to provide a comprehensive understanding of HPV. Integration of the influences from surrounding tissues including blood cells as well as the hypoxic regulation of ion channels in PASMCs are indispensable for insights into HPV and other related clinical conditions.
Collapse
Affiliation(s)
- Hae Young Yoo
- Red Cross College of Nursing, Chung-Ang University, Seoul, Korea
| | - Su Jung Park
- Department of Physiology, College of Medicine, Seoul National University, Seoul, Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, Korea.,Ischemic/Hypoxic Disease Institute, College of Medicine, Seoul National University, Seoul, Korea
| | - Hae Jin Kim
- Department of Physiology, College of Medicine, Seoul National University, Seoul, Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, Korea.,Ischemic/Hypoxic Disease Institute, College of Medicine, Seoul National University, Seoul, Korea
| | - Woo Kyung Kim
- Department of Internal Medicine and Channelopathy Research Institute (CRC), College of Medicine, Dongguk University, Goyang, Korea
| | - Sung Joon Kim
- Department of Physiology, College of Medicine, Seoul National University, Seoul, Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, Korea.,Ischemic/Hypoxic Disease Institute, College of Medicine, Seoul National University, Seoul, Korea
| |
Collapse
|
16
|
Gaspari RJ, Paydarfar D. Pulmonary effects of intravenous atropine induce ventilation perfusion mismatch. Can J Physiol Pharmacol 2014; 92:399-404. [PMID: 24773405 DOI: 10.1139/cjpp-2012-0429] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Atropine is used for a number of medical conditions, predominantly for its cardiovascular effects. Cholinergic nerves that innervate pulmonary smooth muscle, glands, and vasculature may be affected by anticholinergic medications. We hypothesized that atropine causes alterations in pulmonary gas exchange. We conducted a prospective interventional study with detailed physiologic recordings in anesthetized, spontaneously breathing rats (n = 8). Animals breathing a normoxic gas mixture titrated to a partial arterial pressure of oxygen of 110-120 were exposed to an escalating dose of intravenous atropine (0.001, 0.01, 0.1, 5.0, and 20.0 mg/kg body mass). Arterial blood gas measurements were recorded every 2 min (×5) at baseline, and following each of the 5 doses of atropine. In addition, the animals regional pulmonary blood flow was measured using neutron-activated microspheres. Oxygenation decreased immediately following intravenous administration of atropine, despite a small increase in the volume of inspired air with no change in respiratory rate. Arterial blood gas analysis showed an increase in pulmonary dysfunction, characterized by a widening of the alveolar-arteriole gradient (p < 0.003 all groups except for the lowest dose of atropine). The microsphere data demonstrates an abrupt and marked heterogeneity of pulmonary blood flow following atropine treatment. In conclusion, atropine was found to decrease pulmonary gas exchange in a dose-dependent fashion in this rat model.
Collapse
Affiliation(s)
- Romolo J Gaspari
- a Department of Emergency Medicine, University of Massachusetts School of Medicine, 55 Lake Avenue North, Worcester, MA 01655, USA
| | | |
Collapse
|
17
|
Müller-Redetzky HC, Will D, Hellwig K, Kummer W, Tschernig T, Pfeil U, Paddenberg R, Menger MD, Kershaw O, Gruber AD, Weissmann N, Hippenstiel S, Suttorp N, Witzenrath M. Mechanical ventilation drives pneumococcal pneumonia into lung injury and sepsis in mice: protection by adrenomedullin. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2014; 18:R73. [PMID: 24731244 PMCID: PMC4056010 DOI: 10.1186/cc13830] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Accepted: 04/03/2014] [Indexed: 01/04/2023]
Abstract
Introduction Ventilator-induced lung injury (VILI) contributes to morbidity and mortality in acute respiratory distress syndrome (ARDS). Particularly pre-injured lungs are susceptible to VILI despite protective ventilation. In a previous study, the endogenous peptide adrenomedullin (AM) protected murine lungs from VILI. We hypothesized that mechanical ventilation (MV) contributes to lung injury and sepsis in pneumonia, and that AM may reduce lung injury and multiple organ failure in ventilated mice with pneumococcal pneumonia. Methods We analyzed in mice the impact of MV in established pneumonia on lung injury, inflammation, bacterial burden, hemodynamics and extrapulmonary organ injury, and assessed the therapeutic potential of AM by starting treatment at intubation. Results In pneumococcal pneumonia, MV increased lung permeability, and worsened lung mechanics and oxygenation failure. MV dramatically increased lung and blood cytokines but not lung leukocyte counts in pneumonia. MV induced systemic leukocytopenia and liver, gut and kidney injury in mice with pneumonia. Lung and blood bacterial burden was not affected by MV pneumonia and MV increased lung AM expression, whereas receptor activity modifying protein (RAMP) 1–3 expression was increased in pneumonia and reduced by MV. Infusion of AM protected against MV-induced lung injury (66% reduction of pulmonary permeability p < 0.01; prevention of pulmonary restriction) and against VILI-induced liver and gut injury in pneumonia (91% reduction of AST levels p < 0.05, 96% reduction of alanine aminotransaminase (ALT) levels p < 0.05, abrogation of histopathological changes and parenchymal apoptosis in liver and gut). Conclusions MV paved the way for the progression of pneumonia towards ARDS and sepsis by aggravating lung injury and systemic hyperinflammation leading to liver, kidney and gut injury. AM may be a promising therapeutic option to protect against development of lung injury, sepsis and extrapulmonary organ injury in mechanically ventilated individuals with severe pneumonia.
Collapse
|
18
|
Paddenberg R, Mermer P, Goldenberg A, Kummer W. Videomorphometric analysis of hypoxic pulmonary vasoconstriction of intra-pulmonary arteries using murine precision cut lung slices. J Vis Exp 2014:e50970. [PMID: 24458260 PMCID: PMC4089409 DOI: 10.3791/50970] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Acute alveolar hypoxia causes pulmonary vasoconstriction (HPV) - also known as von Euler-Liljestrand mechanism - which serves to match lung perfusion to ventilation. Up to now, the underlying mechanisms are not fully understood. The major vascular segment contributing to HPV is the intra-acinar artery. This vessel section is responsible for the blood supply of an individual acinus, which is defined as the portion of lung distal to a terminal bronchiole. Intra-acinar arteries are mostly located in that part of the lung that cannot be selectively reached by a number of commonly used techniques such as measurement of the pulmonary artery pressure in isolated perfused lungs or force recordings from dissected proximal pulmonary artery segments(1,2). The analysis of subpleural vessels by real-time confocal laser scanning luminescence microscopy is limited to vessels with up to 50 µm in diameter(3). We provide a technique to study HPV of murine intra-pulmonary arteries in the range of 20-100 µm inner diameters. It is based on the videomorphometric analysis of cross-sectioned arteries in precision cut lung slices (PCLS). This method allows the quantitative measurement of vasoreactivity of small intra-acinar arteries with inner diameter between 20-40 µm which are located at gussets of alveolar septa next to alveolar ducts and of larger pre-acinar arteries with inner diameters between 40-100 µm which run adjacent to bronchi and bronchioles. In contrast to real-time imaging of subpleural vessels in anesthetized and ventilated mice, videomorphometric analysis of PCLS occurs under conditions free of shear stress. In our experimental model both arterial segments exhibit a monophasic HPV when exposed to medium gassed with 1% O2 and the response fades after 30-40 min at hypoxia.
Collapse
Affiliation(s)
| | - Petra Mermer
- Institute of Anatomy and Cell Biology, Justus-Liebig-University
| | - Anna Goldenberg
- Institute of Anatomy and Cell Biology, Justus-Liebig-University
| | - Wolfgang Kummer
- Institute of Anatomy and Cell Biology, Justus-Liebig-University
| |
Collapse
|
19
|
Liberati TA, Randle MR, Toth LA. In vitrolung slices: a powerful approach for assessment of lung pathophysiology. Expert Rev Mol Diagn 2014; 10:501-8. [DOI: 10.1586/erm.10.21] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
|
20
|
Doctor A, Stamler JS. Nitric oxide transport in blood: a third gas in the respiratory cycle. Compr Physiol 2013; 1:541-68. [PMID: 23737185 DOI: 10.1002/cphy.c090009] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The trapping, processing, and delivery of nitric oxide (NO) bioactivity by red blood cells (RBCs) have emerged as a conserved mechanism through which regional blood flow is linked to biochemical cues of perfusion sufficiency. We present here an expanded paradigm for the human respiratory cycle based on the coordinated transport of three gases: NO, O₂, and CO₂. By linking O₂ and NO flux, RBCs couple vessel caliber (and thus blood flow) to O₂ availability in the lung and to O₂ need in the periphery. The elements required for regulated O₂-based signal transduction via controlled NO processing within RBCs are presented herein, including S-nitrosothiol (SNO) synthesis by hemoglobin and O₂-regulated delivery of NO bioactivity (capture, activation, and delivery of NO groups at sites remote from NO synthesis by NO synthase). The role of NO transport in the respiratory cycle at molecular, microcirculatory, and system levels is reviewed. We elucidate the mechanism through which regulated NO transport in blood supports O₂ homeostasis, not only through adaptive regulation of regional systemic blood flow but also by optimizing ventilation-perfusion matching in the lung. Furthermore, we discuss the role of NO transport in the central control of breathing and in baroreceptor control of blood pressure, which subserve O₂ supply to tissue. Additionally, malfunctions of this transport and signaling system that are implicated in a wide array of human pathophysiologies are described. Understanding the (dys)function of NO processing in blood is a prerequisite for the development of novel therapies that target the vasoactive capacities of RBCs.
Collapse
Affiliation(s)
- Allan Doctor
- Washington University School of Medicine, Department of Pediatrics, St. Louis, MO, USA
| | | |
Collapse
|
21
|
Kretschmer S, Dethlefsen I, Hagner-Benes S, Marsh LM, Garn H, König P. Visualization of intrapulmonary lymph vessels in healthy and inflamed murine lung using CD90/Thy-1 as a marker. PLoS One 2013; 8:e55201. [PMID: 23408960 PMCID: PMC3568125 DOI: 10.1371/journal.pone.0055201] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Accepted: 12/28/2012] [Indexed: 01/31/2023] Open
Abstract
Background Lymphatic vessels play a pivotal role in fluid drainage and egress of immune cells from the lung. However, examining murine lung lymphatics is hampered by the expression of classical lymph endothelial markers on other cell types, which hinders the unambiguous identification of lymphatics. The expression of CD90/Thy-1 on lymph endothelium was recently described and we therefore examined its suitability to identify murine pulmonary lymph vessels under healthy and inflammatory conditions. Methodology/Principal Findings Immunohistochemistry with a monoclonal antibody against CD90.2/Thy-1.2 on 200 µm thick precision cut lung slices labeled a vascular network that was distinct from blood vessels. Preembedding immunostaining and electron microscopy verified that the anti-CD90.2/Thy-1.2 antibody labeled lymphatic endothelium. Absence of staining in CD90.1/Thy-1.1 expressing FVB mice indicated that CD90/Thy-1 was expressed on lymph endothelium and labeling was not due to antibody cross reactivity. Double-labeling immunohistochemistry for CD90/Thy-1 and α-smooth muscle actin identified two routes for lymph vessel exit from the murine lung. One started in the parenchyma or around veins and left via venous blood vessels. The other began in the space around airways or in the space between airways and pulmonary arteries and left via the main bronchi. As expected from the pulmonary distribution of lymph vessels, intranasal application of house dust mite led to accumulation of T cells around veins and in the connective tissue between airways and pulmonary arteries. Surprisingly, increased numbers of T cells were also detected around intraacinar arteries that lack lymph vessels. This arterial T cell sheath extended to the pulmonary arteries where lymph vessels were located. Conclusions/Significance These results indicate that CD90/Thy-1 is expressed on lymphatic endothelial cells and represents a suitable marker for murine lung lymph vessels. Combining CD90/Thy-1 labeling with precision cut lung slices allows visualizing the anatomy of the lymphatic system in normal and inflamed conditions.
Collapse
Affiliation(s)
- Sarah Kretschmer
- Institut für Anatomie, Zentrum für medizinische Struktur- und Zellbiologie, Universität zu Lübeck, Lübeck, Germany
| | - Ina Dethlefsen
- Institut für Anatomie, Zentrum für medizinische Struktur- und Zellbiologie, Universität zu Lübeck, Lübeck, Germany
| | - Stefanie Hagner-Benes
- Institut für Laboratoriumsmedizin und Pathobiochemie, Molekulare Diagnostik, Philipps-Universität, Marburg, Germany
| | - Leigh M. Marsh
- Institut für Laboratoriumsmedizin und Pathobiochemie, Molekulare Diagnostik, Philipps-Universität, Marburg, Germany
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria
| | - Holger Garn
- Institut für Laboratoriumsmedizin und Pathobiochemie, Molekulare Diagnostik, Philipps-Universität, Marburg, Germany
| | - Peter König
- Institut für Anatomie, Zentrum für medizinische Struktur- und Zellbiologie, Universität zu Lübeck, Lübeck, Germany
- * E-mail:
| |
Collapse
|
22
|
Sewald K, Braun A. Assessment of immunotoxicity using precision-cut tissue slices. Xenobiotica 2013; 43:84-97. [PMID: 23199366 PMCID: PMC3518294 DOI: 10.3109/00498254.2012.731543] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 09/12/2012] [Accepted: 09/14/2012] [Indexed: 01/06/2023]
Abstract
1.When the immune system encounters incoming infectious agents, this generally leads to immunity. The evoked immune response is usually robust, but can be severely perturbed by potentially harmful environmental agents such as chemicals, pharmaceuticals and allergens. 2.Immunosuppression, hypersensitivity and autoimmunity may occur due to changed immune activity. Evaluation of the immunotoxic potency of agents as part of risk assessment is currently established in vivo with animal models and in vitro with cell lines or primary cells. 3.Although in vivo testing is usually the most relevant situation for many agents, more and more in vitro models are being developed for assessment of immunotoxicity. In this context, hypersensitivity and immunosuppression are considered to be a primary focus for developing in vitro methods. Three-dimensional organotypic tissue models are also part of current research in immunotoxicology. 4.In recent years, there has been a revival of interest in organotypic tissue models. In the context of immunotoxicity testing, precision-cut lung slices in particular have been intensively studied. Therefore, this review is very much focused on pulmonary immunotoxicology. Respiratory hypersensitivity and inflammation are further highlighted aspects of this review. Immunotoxicity assessment currently is of limited use in other tissue models, which are therefore described only briefly within this review.
Collapse
Affiliation(s)
- Katherina Sewald
- Department of Airway Immunology , Fraunhofer ITEM, Hannover, Germany.
| | | |
Collapse
|
23
|
Wang L, Yin J, Nickles HT, Ranke H, Tabuchi A, Hoffmann J, Tabeling C, Barbosa-Sicard E, Chanson M, Kwak BR, Shin HS, Wu S, Isakson BE, Witzenrath M, de Wit C, Fleming I, Kuppe H, Kuebler WM. Hypoxic pulmonary vasoconstriction requires connexin 40-mediated endothelial signal conduction. J Clin Invest 2012; 122:4218-30. [PMID: 23093775 PMCID: PMC3484430 DOI: 10.1172/jci59176] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Accepted: 08/30/2012] [Indexed: 12/21/2022] Open
Abstract
Hypoxic pulmonary vasoconstriction (HPV) is a physiological mechanism by which pulmonary arteries constrict in hypoxic lung areas in order to redirect blood flow to areas with greater oxygen supply. Both oxygen sensing and the contractile response are thought to be intrinsic to pulmonary arterial smooth muscle cells. Here we speculated that the ideal site for oxygen sensing might instead be at the alveolocapillary level, with subsequent retrograde propagation to upstream arterioles via connexin 40 (Cx40) endothelial gap junctions. HPV was largely attenuated by Cx40-specific and nonspecific gap junction uncouplers in the lungs of wild-type mice and in lungs from mice lacking Cx40 (Cx40-/-). In vivo, hypoxemia was more severe in Cx40-/- mice than in wild-type mice. Real-time fluorescence imaging revealed that hypoxia caused endothelial membrane depolarization in alveolar capillaries that propagated to upstream arterioles in wild-type, but not Cx40-/-, mice. Transformation of endothelial depolarization into vasoconstriction involved endothelial voltage-dependent α1G subtype Ca2+ channels, cytosolic phospholipase A2, and epoxyeicosatrienoic acids. Based on these data, we propose that HPV originates at the alveolocapillary level, from which the hypoxic signal is propagated as endothelial membrane depolarization to upstream arterioles in a Cx40-dependent manner.
Collapse
MESH Headings
- Animals
- Calcium Channels/metabolism
- Connexins/genetics
- Connexins/metabolism
- Endothelium, Vascular/metabolism
- Endothelium, Vascular/pathology
- Endothelium, Vascular/physiopathology
- Human Umbilical Vein Endothelial Cells
- Humans
- Hypoxia/genetics
- Hypoxia/metabolism
- Hypoxia/pathology
- Hypoxia/physiopathology
- Lung/blood supply
- Lung/metabolism
- Lung/pathology
- Lung/physiopathology
- Mice
- Mice, Knockout
- Muscle, Smooth/metabolism
- Muscle, Smooth/pathology
- Muscle, Smooth/physiopathology
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- Phospholipases A2, Cytosolic/metabolism
- Pulmonary Artery/metabolism
- Pulmonary Artery/pathology
- Pulmonary Artery/physiopathology
- Signal Transduction
- Vasoconstriction
- Gap Junction alpha-5 Protein
Collapse
Affiliation(s)
- Liming Wang
- The Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada.
Institute of Physiology, Department of Internal Medicine, Charité-Universitätsmedizin, Berlin, Germany.
Department of Cardiothoracic Surgery, Affiliated People′s Hospital of Jiangsu University, Zhenjiang, China.
German Heart Institute, Berlin, Germany.
Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, Charité-Universitätsmedizin Berlin, Germany.
Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University Frankfurt, Frankfurt, Germany.
Laboratory of Clinical Investigation III, Hôpitaux Universitaires de Genève (HUG), and
Department of Pathology and Immunology, Université de Genève, Genève, Switzerland.
Center for Neural Science, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Center for Lung Biology, University of South Alabama, Mobile, Alabama, USA.
Robert M. Berne Cardiovascular Research Center, Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA.
Institute of Physiology, University of Lübeck, Lübeck, Germany.
Department of Surgery and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Jun Yin
- The Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada.
Institute of Physiology, Department of Internal Medicine, Charité-Universitätsmedizin, Berlin, Germany.
Department of Cardiothoracic Surgery, Affiliated People′s Hospital of Jiangsu University, Zhenjiang, China.
German Heart Institute, Berlin, Germany.
Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, Charité-Universitätsmedizin Berlin, Germany.
Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University Frankfurt, Frankfurt, Germany.
Laboratory of Clinical Investigation III, Hôpitaux Universitaires de Genève (HUG), and
Department of Pathology and Immunology, Université de Genève, Genève, Switzerland.
Center for Neural Science, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Center for Lung Biology, University of South Alabama, Mobile, Alabama, USA.
Robert M. Berne Cardiovascular Research Center, Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA.
Institute of Physiology, University of Lübeck, Lübeck, Germany.
Department of Surgery and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Hannah T. Nickles
- The Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada.
Institute of Physiology, Department of Internal Medicine, Charité-Universitätsmedizin, Berlin, Germany.
Department of Cardiothoracic Surgery, Affiliated People′s Hospital of Jiangsu University, Zhenjiang, China.
German Heart Institute, Berlin, Germany.
Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, Charité-Universitätsmedizin Berlin, Germany.
Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University Frankfurt, Frankfurt, Germany.
Laboratory of Clinical Investigation III, Hôpitaux Universitaires de Genève (HUG), and
Department of Pathology and Immunology, Université de Genève, Genève, Switzerland.
Center for Neural Science, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Center for Lung Biology, University of South Alabama, Mobile, Alabama, USA.
Robert M. Berne Cardiovascular Research Center, Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA.
Institute of Physiology, University of Lübeck, Lübeck, Germany.
Department of Surgery and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Hannes Ranke
- The Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada.
Institute of Physiology, Department of Internal Medicine, Charité-Universitätsmedizin, Berlin, Germany.
Department of Cardiothoracic Surgery, Affiliated People′s Hospital of Jiangsu University, Zhenjiang, China.
German Heart Institute, Berlin, Germany.
Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, Charité-Universitätsmedizin Berlin, Germany.
Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University Frankfurt, Frankfurt, Germany.
Laboratory of Clinical Investigation III, Hôpitaux Universitaires de Genève (HUG), and
Department of Pathology and Immunology, Université de Genève, Genève, Switzerland.
Center for Neural Science, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Center for Lung Biology, University of South Alabama, Mobile, Alabama, USA.
Robert M. Berne Cardiovascular Research Center, Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA.
Institute of Physiology, University of Lübeck, Lübeck, Germany.
Department of Surgery and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Arata Tabuchi
- The Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada.
Institute of Physiology, Department of Internal Medicine, Charité-Universitätsmedizin, Berlin, Germany.
Department of Cardiothoracic Surgery, Affiliated People′s Hospital of Jiangsu University, Zhenjiang, China.
German Heart Institute, Berlin, Germany.
Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, Charité-Universitätsmedizin Berlin, Germany.
Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University Frankfurt, Frankfurt, Germany.
Laboratory of Clinical Investigation III, Hôpitaux Universitaires de Genève (HUG), and
Department of Pathology and Immunology, Université de Genève, Genève, Switzerland.
Center for Neural Science, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Center for Lung Biology, University of South Alabama, Mobile, Alabama, USA.
Robert M. Berne Cardiovascular Research Center, Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA.
Institute of Physiology, University of Lübeck, Lübeck, Germany.
Department of Surgery and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Julia Hoffmann
- The Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada.
Institute of Physiology, Department of Internal Medicine, Charité-Universitätsmedizin, Berlin, Germany.
Department of Cardiothoracic Surgery, Affiliated People′s Hospital of Jiangsu University, Zhenjiang, China.
German Heart Institute, Berlin, Germany.
Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, Charité-Universitätsmedizin Berlin, Germany.
Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University Frankfurt, Frankfurt, Germany.
Laboratory of Clinical Investigation III, Hôpitaux Universitaires de Genève (HUG), and
Department of Pathology and Immunology, Université de Genève, Genève, Switzerland.
Center for Neural Science, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Center for Lung Biology, University of South Alabama, Mobile, Alabama, USA.
Robert M. Berne Cardiovascular Research Center, Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA.
Institute of Physiology, University of Lübeck, Lübeck, Germany.
Department of Surgery and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Christoph Tabeling
- The Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada.
Institute of Physiology, Department of Internal Medicine, Charité-Universitätsmedizin, Berlin, Germany.
Department of Cardiothoracic Surgery, Affiliated People′s Hospital of Jiangsu University, Zhenjiang, China.
German Heart Institute, Berlin, Germany.
Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, Charité-Universitätsmedizin Berlin, Germany.
Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University Frankfurt, Frankfurt, Germany.
Laboratory of Clinical Investigation III, Hôpitaux Universitaires de Genève (HUG), and
Department of Pathology and Immunology, Université de Genève, Genève, Switzerland.
Center for Neural Science, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Center for Lung Biology, University of South Alabama, Mobile, Alabama, USA.
Robert M. Berne Cardiovascular Research Center, Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA.
Institute of Physiology, University of Lübeck, Lübeck, Germany.
Department of Surgery and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Eduardo Barbosa-Sicard
- The Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada.
Institute of Physiology, Department of Internal Medicine, Charité-Universitätsmedizin, Berlin, Germany.
Department of Cardiothoracic Surgery, Affiliated People′s Hospital of Jiangsu University, Zhenjiang, China.
German Heart Institute, Berlin, Germany.
Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, Charité-Universitätsmedizin Berlin, Germany.
Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University Frankfurt, Frankfurt, Germany.
Laboratory of Clinical Investigation III, Hôpitaux Universitaires de Genève (HUG), and
Department of Pathology and Immunology, Université de Genève, Genève, Switzerland.
Center for Neural Science, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Center for Lung Biology, University of South Alabama, Mobile, Alabama, USA.
Robert M. Berne Cardiovascular Research Center, Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA.
Institute of Physiology, University of Lübeck, Lübeck, Germany.
Department of Surgery and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Marc Chanson
- The Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada.
Institute of Physiology, Department of Internal Medicine, Charité-Universitätsmedizin, Berlin, Germany.
Department of Cardiothoracic Surgery, Affiliated People′s Hospital of Jiangsu University, Zhenjiang, China.
German Heart Institute, Berlin, Germany.
Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, Charité-Universitätsmedizin Berlin, Germany.
Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University Frankfurt, Frankfurt, Germany.
Laboratory of Clinical Investigation III, Hôpitaux Universitaires de Genève (HUG), and
Department of Pathology and Immunology, Université de Genève, Genève, Switzerland.
Center for Neural Science, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Center for Lung Biology, University of South Alabama, Mobile, Alabama, USA.
Robert M. Berne Cardiovascular Research Center, Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA.
Institute of Physiology, University of Lübeck, Lübeck, Germany.
Department of Surgery and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Brenda R. Kwak
- The Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada.
Institute of Physiology, Department of Internal Medicine, Charité-Universitätsmedizin, Berlin, Germany.
Department of Cardiothoracic Surgery, Affiliated People′s Hospital of Jiangsu University, Zhenjiang, China.
German Heart Institute, Berlin, Germany.
Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, Charité-Universitätsmedizin Berlin, Germany.
Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University Frankfurt, Frankfurt, Germany.
Laboratory of Clinical Investigation III, Hôpitaux Universitaires de Genève (HUG), and
Department of Pathology and Immunology, Université de Genève, Genève, Switzerland.
Center for Neural Science, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Center for Lung Biology, University of South Alabama, Mobile, Alabama, USA.
Robert M. Berne Cardiovascular Research Center, Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA.
Institute of Physiology, University of Lübeck, Lübeck, Germany.
Department of Surgery and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Hee-Sup Shin
- The Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada.
Institute of Physiology, Department of Internal Medicine, Charité-Universitätsmedizin, Berlin, Germany.
Department of Cardiothoracic Surgery, Affiliated People′s Hospital of Jiangsu University, Zhenjiang, China.
German Heart Institute, Berlin, Germany.
Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, Charité-Universitätsmedizin Berlin, Germany.
Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University Frankfurt, Frankfurt, Germany.
Laboratory of Clinical Investigation III, Hôpitaux Universitaires de Genève (HUG), and
Department of Pathology and Immunology, Université de Genève, Genève, Switzerland.
Center for Neural Science, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Center for Lung Biology, University of South Alabama, Mobile, Alabama, USA.
Robert M. Berne Cardiovascular Research Center, Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA.
Institute of Physiology, University of Lübeck, Lübeck, Germany.
Department of Surgery and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Songwei Wu
- The Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada.
Institute of Physiology, Department of Internal Medicine, Charité-Universitätsmedizin, Berlin, Germany.
Department of Cardiothoracic Surgery, Affiliated People′s Hospital of Jiangsu University, Zhenjiang, China.
German Heart Institute, Berlin, Germany.
Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, Charité-Universitätsmedizin Berlin, Germany.
Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University Frankfurt, Frankfurt, Germany.
Laboratory of Clinical Investigation III, Hôpitaux Universitaires de Genève (HUG), and
Department of Pathology and Immunology, Université de Genève, Genève, Switzerland.
Center for Neural Science, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Center for Lung Biology, University of South Alabama, Mobile, Alabama, USA.
Robert M. Berne Cardiovascular Research Center, Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA.
Institute of Physiology, University of Lübeck, Lübeck, Germany.
Department of Surgery and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Brant E. Isakson
- The Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada.
Institute of Physiology, Department of Internal Medicine, Charité-Universitätsmedizin, Berlin, Germany.
Department of Cardiothoracic Surgery, Affiliated People′s Hospital of Jiangsu University, Zhenjiang, China.
German Heart Institute, Berlin, Germany.
Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, Charité-Universitätsmedizin Berlin, Germany.
Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University Frankfurt, Frankfurt, Germany.
Laboratory of Clinical Investigation III, Hôpitaux Universitaires de Genève (HUG), and
Department of Pathology and Immunology, Université de Genève, Genève, Switzerland.
Center for Neural Science, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Center for Lung Biology, University of South Alabama, Mobile, Alabama, USA.
Robert M. Berne Cardiovascular Research Center, Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA.
Institute of Physiology, University of Lübeck, Lübeck, Germany.
Department of Surgery and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Martin Witzenrath
- The Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada.
Institute of Physiology, Department of Internal Medicine, Charité-Universitätsmedizin, Berlin, Germany.
Department of Cardiothoracic Surgery, Affiliated People′s Hospital of Jiangsu University, Zhenjiang, China.
German Heart Institute, Berlin, Germany.
Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, Charité-Universitätsmedizin Berlin, Germany.
Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University Frankfurt, Frankfurt, Germany.
Laboratory of Clinical Investigation III, Hôpitaux Universitaires de Genève (HUG), and
Department of Pathology and Immunology, Université de Genève, Genève, Switzerland.
Center for Neural Science, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Center for Lung Biology, University of South Alabama, Mobile, Alabama, USA.
Robert M. Berne Cardiovascular Research Center, Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA.
Institute of Physiology, University of Lübeck, Lübeck, Germany.
Department of Surgery and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Cor de Wit
- The Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada.
Institute of Physiology, Department of Internal Medicine, Charité-Universitätsmedizin, Berlin, Germany.
Department of Cardiothoracic Surgery, Affiliated People′s Hospital of Jiangsu University, Zhenjiang, China.
German Heart Institute, Berlin, Germany.
Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, Charité-Universitätsmedizin Berlin, Germany.
Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University Frankfurt, Frankfurt, Germany.
Laboratory of Clinical Investigation III, Hôpitaux Universitaires de Genève (HUG), and
Department of Pathology and Immunology, Université de Genève, Genève, Switzerland.
Center for Neural Science, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Center for Lung Biology, University of South Alabama, Mobile, Alabama, USA.
Robert M. Berne Cardiovascular Research Center, Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA.
Institute of Physiology, University of Lübeck, Lübeck, Germany.
Department of Surgery and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Ingrid Fleming
- The Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada.
Institute of Physiology, Department of Internal Medicine, Charité-Universitätsmedizin, Berlin, Germany.
Department of Cardiothoracic Surgery, Affiliated People′s Hospital of Jiangsu University, Zhenjiang, China.
German Heart Institute, Berlin, Germany.
Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, Charité-Universitätsmedizin Berlin, Germany.
Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University Frankfurt, Frankfurt, Germany.
Laboratory of Clinical Investigation III, Hôpitaux Universitaires de Genève (HUG), and
Department of Pathology and Immunology, Université de Genève, Genève, Switzerland.
Center for Neural Science, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Center for Lung Biology, University of South Alabama, Mobile, Alabama, USA.
Robert M. Berne Cardiovascular Research Center, Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA.
Institute of Physiology, University of Lübeck, Lübeck, Germany.
Department of Surgery and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Hermann Kuppe
- The Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada.
Institute of Physiology, Department of Internal Medicine, Charité-Universitätsmedizin, Berlin, Germany.
Department of Cardiothoracic Surgery, Affiliated People′s Hospital of Jiangsu University, Zhenjiang, China.
German Heart Institute, Berlin, Germany.
Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, Charité-Universitätsmedizin Berlin, Germany.
Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University Frankfurt, Frankfurt, Germany.
Laboratory of Clinical Investigation III, Hôpitaux Universitaires de Genève (HUG), and
Department of Pathology and Immunology, Université de Genève, Genève, Switzerland.
Center for Neural Science, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Center for Lung Biology, University of South Alabama, Mobile, Alabama, USA.
Robert M. Berne Cardiovascular Research Center, Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA.
Institute of Physiology, University of Lübeck, Lübeck, Germany.
Department of Surgery and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Wolfgang M. Kuebler
- The Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada.
Institute of Physiology, Department of Internal Medicine, Charité-Universitätsmedizin, Berlin, Germany.
Department of Cardiothoracic Surgery, Affiliated People′s Hospital of Jiangsu University, Zhenjiang, China.
German Heart Institute, Berlin, Germany.
Division of Infectious Diseases and Pulmonary Medicine, Department of Internal Medicine, Charité-Universitätsmedizin Berlin, Germany.
Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University Frankfurt, Frankfurt, Germany.
Laboratory of Clinical Investigation III, Hôpitaux Universitaires de Genève (HUG), and
Department of Pathology and Immunology, Université de Genève, Genève, Switzerland.
Center for Neural Science, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Center for Lung Biology, University of South Alabama, Mobile, Alabama, USA.
Robert M. Berne Cardiovascular Research Center, Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA.
Institute of Physiology, University of Lübeck, Lübeck, Germany.
Department of Surgery and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| |
Collapse
|
24
|
Zhang J, Hu H, Palma NL, Harrison JK, Mubarak KK, Carrie RD, Alnuaimat H, Shen X, Luo D, Patel JM. Hypoxia-induced endothelial CX3CL1 triggers lung smooth muscle cell phenotypic switching and proliferative expansion. Am J Physiol Lung Cell Mol Physiol 2012; 303:L912-22. [PMID: 23002075 DOI: 10.1152/ajplung.00014.2012] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Distal arterioles with limited smooth muscles help maintain the high blood flow and low pressure in the lung circulation. Chronic hypoxia induces lung distal vessel muscularization. However, the molecular events that trigger alveolar hypoxia-induced peripheral endothelium modulation of vessel wall smooth muscle cell (SMC) proliferation and filling of nonmuscular areas are unclear. Here, we investigated the role of CX3CL1/CX3CR1 system in endothelial-SMC cross talk in response to hypoxia. Human lung microvascular endothelial cells responded to alveolar oxygen deficiency by overproduction of the chemokine CX3CL1. The CX3CL1 receptor CX3CR1 is expressed by SMCs that are adjacent to the distal endothelium. Hypoxic release of endothelial CX3CL1 induced SMC phenotypic switching from the contractile to the proliferative state. Inhibition of CX3CR1 prevented CX3CL1 stimulation of SMC proliferation and monolayer expansion. Furthermore, CX3CR1 deficiency attenuated spiral muscle expansion, distal vessel muscularization, and pressure elevation in response to hypoxia. Our findings indicate that the capillary endothelium relies on the CX3CL1-CX3CR1 axis to sense alveolar hypoxia and promote peripheral vessel muscularization. These results have clinical significance in the development of novel therapeutics that target mechanisms of distal arterial remodeling associated with pulmonary hypertension induced by oxygen deficiency that is present in people living at high altitudes and patients with obstructive lung diseases.
Collapse
Affiliation(s)
- Jianliang Zhang
- Dept. of Medicine, Univ. of Florida College of Medicine, Gainesville, FL 32610-0225, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Lung oxidative damage by hypoxia. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2012; 2012:856918. [PMID: 22966417 PMCID: PMC3433143 DOI: 10.1155/2012/856918] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Accepted: 07/11/2012] [Indexed: 12/12/2022]
Abstract
One of the most important functions of lungs is to maintain an adequate oxygenation in the organism. This organ can be affected by hypoxia facing both physiological and pathological situations. Exposure to this condition favors the increase of reactive oxygen species from mitochondria, as from NADPH oxidase, xanthine oxidase/reductase, and nitric oxide synthase enzymes, as well as establishing an inflammatory process. In lungs, hypoxia also modifies the levels of antioxidant substances causing pulmonary oxidative damage. Imbalance of redox state in lungs induced by hypoxia has been suggested as a participant in the changes observed in lung function in the hypoxic context, such as hypoxic vasoconstriction and pulmonary edema, in addition to vascular remodeling and chronic pulmonary hypertension. In this work, experimental evidence that shows the implied mechanisms in pulmonary redox state by hypoxia is reviewed. Herein, studies of cultures of different lung cells and complete isolated lung and tests conducted in vivo in the different forms of hypoxia, conducted in both animal models and humans, are described.
Collapse
|
26
|
Müller-Redetzky HC, Kummer W, Pfeil U, Hellwig K, Will D, Paddenberg R, Tabeling C, Hippenstiel S, Suttorp N, Witzenrath M. Intermedin stabilized endothelial barrier function and attenuated ventilator-induced lung injury in mice. PLoS One 2012; 7:e35832. [PMID: 22563471 PMCID: PMC3341380 DOI: 10.1371/journal.pone.0035832] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Accepted: 03/22/2012] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Even protective ventilation may aggravate or induce lung failure, particularly in preinjured lungs. Thus, new adjuvant pharmacologic strategies are needed to minimize ventilator-induced lung injury (VILI). Intermedin/Adrenomedullin-2 (IMD) stabilized pulmonary endothelial barrier function in vitro. We hypothesized that IMD may attenuate VILI-associated lung permeability in vivo. METHODOLOGY/PRINCIPAL FINDINGS Human pulmonary microvascular endothelial cell (HPMVEC) monolayers were incubated with IMD, and transcellular electrical resistance was measured to quantify endothelial barrier function. Expression and localization of endogenous pulmonary IMD, and its receptor complexes composed of calcitonin receptor-like receptor (CRLR) and receptor activity-modifying proteins (RAMPs) 1-3 were analyzed by qRT-PCR and immunofluorescence in non ventilated mouse lungs and in lungs ventilated for 6 h. In untreated and IMD treated mice, lung permeability, pulmonary leukocyte recruitment and cytokine levels were assessed after mechanical ventilation. Further, the impact of IMD on pulmonary vasoconstriction was investigated in precision cut lung slices (PCLS) and in isolated perfused and ventilated mouse lungs. IMD stabilized endothelial barrier function in HPMVECs. Mechanical ventilation reduced the expression of RAMP3, but not of IMD, CRLR, and RAMP1 and 2. Mechanical ventilation induced lung hyperpermeability, which was ameliorated by IMD treatment. Oxygenation was not improved by IMD, which may be attributed to impaired hypoxic vasoconstriction due to IMD treatment. IMD had minor impact on pulmonary leukocyte recruitment and did not reduce cytokine levels in VILI. CONCLUSIONS/SIGNIFICANCE IMD may possibly provide a new approach to attenuate VILI.
Collapse
Affiliation(s)
| | - Wolfgang Kummer
- Institute for Anatomy and Cell Biology, Universities of Giessen and Marburg Lung Center, Justus-Liebig-University Giessen, Germany
| | - Uwe Pfeil
- Institute for Anatomy and Cell Biology, Universities of Giessen and Marburg Lung Center, Justus-Liebig-University Giessen, Germany
| | - Katharina Hellwig
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin, Germany
| | - Daniel Will
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin, Germany
| | - Renate Paddenberg
- Institute for Anatomy and Cell Biology, Universities of Giessen and Marburg Lung Center, Justus-Liebig-University Giessen, Germany
| | - Christoph Tabeling
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin, Germany
| | - Stefan Hippenstiel
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin, Germany
| | - Norbert Suttorp
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin, Germany
| | - Martin Witzenrath
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin, Germany
- * E-mail:
| |
Collapse
|
27
|
Park SJ, Yoo HY, Kim HJ, Kim JK, Zhang YH, Kim SJ. Requirement of Pretone by Thromboxane A(2) for Hypoxic Pulmonary Vasoconstriction in Precision-cut Lung Slices of Rat. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2012; 16:59-64. [PMID: 22416221 PMCID: PMC3298827 DOI: 10.4196/kjpp.2012.16.1.59] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Revised: 01/22/2012] [Accepted: 01/25/2012] [Indexed: 01/28/2023]
Abstract
Hypoxic pulmonary vasoconstriction (HPV) is physiologically important response for preventing mismatching between ventilation and perfusion in lungs. The HPV of isolated pulmonary arteries (HPV-PA) usually require a partial pretone by thromboxane agonist (U46619). Because the HPV of ventilated/perfused lungs (HPV-lung) can be triggered without pretone conditioning, we suspected that a putative tissue factor might be responsible for the pretone of HPV. Here we investigated whether HPV can be also observed in precision-cut lung slices (PCLS) from rats. The HPV in PCLS also required partial contraction by U46619. In addition, K+ channel blockers (4AP and TEA) required U46619-pretone to induce significant contraction of PA in PCLS. In contrast, the airways in PCLS showed reversible contraction in response to the K+ channel blockers without pretone conditioning. Also, the airways showed no hypoxic constriction but a relaxation under the partial pretone by U46619. The airways in PCLS showed reliable, concentration-dependent contraction by metacholine (EC50, ~210 nM). In summary, the HPV in PCLS is more similar to isolated PA than V/P lungs. The metacholine-induced constriction of bronchioles suggested that the PLCS might be also useful for studying airway physiology in situ.
Collapse
Affiliation(s)
- Su Jung Park
- Department of Physiology, Seoul National University College of Medicine, Seoul 110-799, Korea
| | | | | | | | | | | |
Collapse
|
28
|
Paddenberg R, Tiefenbach M, Faulhammer P, Goldenberg A, Gries B, Pfeil U, Lips KS, Piruat JI, López-Barneo J, Schermuly RT, Weissmann N, Kummer W. Mitochondrial complex II is essential for hypoxia-induced pulmonary vasoconstriction of intra- but not of pre-acinar arteries. Cardiovasc Res 2012; 93:702-10. [DOI: 10.1093/cvr/cvr359] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
|
29
|
Abstract
It has been known for more than 60 years, and suspected for over 100, that alveolar hypoxia causes pulmonary vasoconstriction by means of mechanisms local to the lung. For the last 20 years, it has been clear that the essential sensor, transduction, and effector mechanisms responsible for hypoxic pulmonary vasoconstriction (HPV) reside in the pulmonary arterial smooth muscle cell. The main focus of this review is the cellular and molecular work performed to clarify these intrinsic mechanisms and to determine how they are facilitated and inhibited by the extrinsic influences of other cells. Because the interaction of intrinsic and extrinsic mechanisms is likely to shape expression of HPV in vivo, we relate results obtained in cells to HPV in more intact preparations, such as intact and isolated lungs and isolated pulmonary vessels. Finally, we evaluate evidence regarding the contribution of HPV to the physiological and pathophysiological processes involved in the transition from fetal to neonatal life, pulmonary gas exchange, high-altitude pulmonary edema, and pulmonary hypertension. Although understanding of HPV has advanced significantly, major areas of ignorance and uncertainty await resolution.
Collapse
Affiliation(s)
- J. T. Sylvester
- Division of Pulmonary & Critical Care Medicine, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, Maryland; and Division of Asthma, Allergy and Lung Biology, School of Medicine, King's College, London, United Kingdom
| | - Larissa A. Shimoda
- Division of Pulmonary & Critical Care Medicine, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, Maryland; and Division of Asthma, Allergy and Lung Biology, School of Medicine, King's College, London, United Kingdom
| | - Philip I. Aaronson
- Division of Pulmonary & Critical Care Medicine, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, Maryland; and Division of Asthma, Allergy and Lung Biology, School of Medicine, King's College, London, United Kingdom
| | - Jeremy P. T. Ward
- Division of Pulmonary & Critical Care Medicine, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, Maryland; and Division of Asthma, Allergy and Lung Biology, School of Medicine, King's College, London, United Kingdom
| |
Collapse
|
30
|
Sanderson MJ. Exploring lung physiology in health and disease with lung slices. Pulm Pharmacol Ther 2011; 24:452-65. [PMID: 21600999 DOI: 10.1016/j.pupt.2011.05.001] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2010] [Revised: 05/03/2011] [Accepted: 05/05/2011] [Indexed: 10/24/2022]
Abstract
The development of therapeutic approaches to treat lung disease requires an understanding of both the normal and disease physiology of the lung. Although traditional experimental approaches only address either organ or cellular physiology, the use of lung slice preparations provides a unique approach to investigate integrated physiology that links the cellular and organ responses. Living lung slices are robust and can be prepared from a variety of species, including humans, and they retain many aspects of the cellular and structural organization of the lung. Functional portions of intrapulmonary airways, arterioles and veins are present within the alveoli parenchyma. The dynamics of macroscopic changes of contraction and relaxation associated with the airways and vessels are readily observed with conventional low-magnification microscopy. The microscopic changes associated with cellular events, that determine the macroscopic responses, can be observed with confocal or two-photon microscopy. To investigate disease processes, lung slices can either be prepared from animal models of disease or animals exposed to disease invoking conditions. Alternatively, the lung slices themselves can be experimentally manipulated. Because of the ability to observe changes in cell physiology and how these responses manifest themselves at the level of the organ, lung slices have become a standard tool for the investigation of lung disease.
Collapse
Affiliation(s)
- Michael J Sanderson
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01655, USA.
| |
Collapse
|
31
|
Mühling J, Tiefenbach M, López-Barneo J, Piruat JI, García-Flores P, Pfeil U, Gries B, Mühlfeld C, Weigand MA, Kummer W, Weissmann N, Paddenberg R. Mitochondrial complex II participates in normoxic and hypoxic regulation of α-keto acids in the murine heart. J Mol Cell Cardiol 2010; 49:950-61. [PMID: 20920510 DOI: 10.1016/j.yjmcc.2010.09.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2009] [Revised: 09/09/2010] [Accepted: 09/23/2010] [Indexed: 10/19/2022]
Abstract
α-Keto acids (α-KAs) are not just metabolic intermediates but are also powerful modulators of different cellular pathways. Here, we tested the hypothesis that α-KA concentrations are regulated by complex II (succinate dehydrogenase=SDH), which represents an intersection between the mitochondrial respiratory chain for which an important function in cardiopulmonary oxygen sensing has been demonstrated, and the Krebs cycle, a central element of α-KA metabolism. SDH subunit D heterozygous (SDHD(+/-)) and wild-type (WT) mice were housed at normoxia or hypoxia (10% O(2)) for 4 days or 3 weeks, and right ventricular pressure, right ventricle/(left ventricle+septum) ratio, cardiomyocyte ultrastructure, pulmonary vascular remodelling, ventricular complex II subunit expression, SDH activity and α-KA concentrations were analysed. In both strains, hypoxia induced increases in right ventricular pressure and enhanced muscularization of distal pulmonary arteries. Right ventricular hypertrophy was less severe in SDHD(+/-) mice although the cardiomyocyte ultrastructure and mitochondrial morphometric parameters were unchanged. Protein amounts of SDHA, SDHB and SDHC, and SDH activity were distinctly reduced in SDHD(+/-) mice. In normoxic SDHD(+/-) mice, α-ketoisocaproate concentration was lowered to 50% as compared to WT animals. Right/left ventricular concentration differences and the hypoxia-induced decline in individual α-KAs were less pronounced in SDHD(+/-) animals indicating that mitochondrial complex II participates in the adjustment of cardiac α-KA concentrations both under normoxic and hypoxic conditions. These characteristics are not related to the hemodynamic consequences of hypoxia-induced pulmonary vascular remodelling, since its extent and right ventricular pressure were not affected in SDHD(+/-) mice albeit right ventricular hypertrophy was attenuated.
Collapse
Affiliation(s)
- Jörg Mühling
- Department of Anesthesiology, Pain and Palliative Medicine, University Medical Center St Radboud, Nijmegen, The Netherlands
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Desireddi JR, Farrow KN, Marks JD, Waypa GB, Schumacker PT. Hypoxia increases ROS signaling and cytosolic Ca(2+) in pulmonary artery smooth muscle cells of mouse lungs slices. Antioxid Redox Signal 2010; 12:595-602. [PMID: 19747064 PMCID: PMC2861538 DOI: 10.1089/ars.2009.2862] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Precapillary arteries constrict during alveolar hypoxia in a response known as hypoxic pulmonary vasoconstriction (HPV). The mechanism by which pulmonary arterial smooth muscle cells (PASMCs) detect a decrease in Po(2) and trigger contraction is not fully understood. Previous studies in cultured PASMCs show that hypoxia induces an increase in reactive oxygen species (ROS) production, but these results may not reflect responses of PASMCs in their native tissue environment. We therefore assessed hypoxia-induced changes in cytosolic ROS in PASMCs of precision-cut mouse lung slices expressing the redox-sensitive protein, RoGFP. Superfusion of lung slices with hypoxic media (1.5% O(2)) resulted in a significant oxidation of RoGFP from normoxic baseline that was attenuated by overexpression of cytosolic catalase. Hypoxic superfusion also increased [Ca(2+)](i) above normoxic baseline; this response was significantly attenuated by cytosolic catalase overexpression or by the administration of EUK134, a synthetic SOD-catalase mimetic. The hypoxia-induced increase in [Ca(2+)](i) was abolished in the absence of extracellular Ca(2+), indicating that ROS signals trigger entry of extracellular calcium. Collectively, these results indicate that an increase in cytosolic ROS signaling is required for the increase in [Ca(2+)](i) in PASMCs in precision-cut mouse lung slices during the acute HPV response.
Collapse
|
33
|
Paddenberg R, Faulhammer P, Goldenberg A, Gries B, Heinl J, Kummer W. Impact of modulators of mitochondrial ATP-sensitive potassium channel (mitoK(ATP)) on hypoxic pulmonary vasoconstriction. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2009; 648:361-8. [PMID: 19536500 DOI: 10.1007/978-90-481-2259-2_41] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Previously, we demonstrated that hypoxic pulmonary vasoconstriction (HPV) of intra-acinar arteries (IAA) requires mitochondrial complex II (= succinate dehydrogenase, SDH) activity (citeauthor ch41:paddenberg2006, Respir Res, 7:93, citeyear ch41:paddenberg2006). Interestingly, SDH subunits A and B have recently been described as components of a multiprotein mitochondrial ATP-sensitive potassium channel (mitoK(ATP)), together with mitochondrial ATP-binding cassette protein-1, adenine nucleotide translocator (ANT), ATP synthase, and phosphate carrier (citeauthor ch41:ardehali2004, Proc Natl Acad Sci USA, 101(32):11880-5, citeyear ch41:ardehali2004). Hence, we tested the hypothesis that such an SDH-containing mitoK(ATP) is involved in HPV. For this purpose, the impact of modulators of mitoK(ATP) on HPV of IAA was studied videomorphometrically in precision cut murine lung slices. Inhibitors of mitoK(ATP) (glibenclamide, 5-hydroxydecanoate) completely suppressed HPV, mitoK(ATP) activators (pinacidil, diazoxide) even induced vasodilatation, and ANT inhibitors (bongkrekic acid, atractyloside) attenuated HPV. This pharmacological profile differs clearly from that described for mitoK(ATP). Accordingly, co-immunoprecipitation experiments provided no evidence for association of complex II subunits SDH-A, -B and -C with ANT, ATP synthase or cytochrome c oxidase in murine heart mitochondria. Hence, it is likely that the inhibitory effects on HPV that we observed in our experiments result from modulation of several mitochondrial protein complexes independently involved in the signalling cascade such as ROS-producing complex II and ANT-regulated mitochondrial permeability transition pore.
Collapse
Affiliation(s)
- R Paddenberg
- Institute of Anatomy and Cell Biology, Justus-Liebig-University, ECCPS, Giessen, Germany.
| | | | | | | | | | | |
Collapse
|
34
|
Wright JL, Cosio M, Churg A. Animal models of chronic obstructive pulmonary disease. Am J Physiol Lung Cell Mol Physiol 2008; 295:L1-15. [PMID: 18456796 DOI: 10.1152/ajplung.90200.2008] [Citation(s) in RCA: 295] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The mechanisms involved in the genesis of chronic obstructive pulmonary disease (COPD) are poorly defined. This area is complicated and difficult to model because COPD consists of four separate anatomic lesions (emphysema, small airway remodeling, pulmonary hypertension, and chronic bronchitis) and a functional lesion, acute exacerbation; moreover, the disease in humans develops over decades. This review discusses the various animal models that have been used to attempt to recreate human COPD and the advantages and disadvantages of each. None of the models reproduces the exact changes seen in humans, but cigarette smoke-induced disease appears to come the closest, and genetically modified animals also, in some instances, shed light on processes that appear to play a role.
Collapse
Affiliation(s)
- Joanne L Wright
- Department of Pathology, University of British Columbia, Vancouver, British Columbia, Canada.
| | | | | |
Collapse
|
35
|
Wright JL, Churg A. Short-term exposure to cigarette smoke induces endothelial dysfunction in small intrapulmonary arteries: analysis using guinea pig precision cut lung slices. J Appl Physiol (1985) 2008; 104:1462-9. [PMID: 18356485 DOI: 10.1152/japplphysiol.00520.2007] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The pathogenesis of cigarette smoke-induced pulmonary hypertension is not understood. We have previously shown that smoke rapidly and persistently, but discoordinately, upregulates gene expression of mediators that control vasoconstriction, vasoproliferation, and vasorelaxation in small intrapulmonary arteries. To investigate the possibility that smoke also induces endothelial dysfunction, a finding common to other forms of pulmonary hypertension, we exposed guinea pigs to smoke or air (control) daily for 2 wk and then prepared precision-cut lung slices. After exposure to endothelin-1, a vasoconstrictor, intra-acinar arteries in lung slices derived from smoke-exposed animals constricted more rapidly (greater constriction at a given concentration of endothelin) than did vessels from air-exposed animals. To examine relaxation responses, arteries were constricted with the vasoconstrictor U-46619 and then relaxed with progressively increasing doses of acetylcholine. Vessels from smokers had a delayed response to acetylcholine compared with vessels from controls. The NO synthase inhibitor N(G)-nitro-L-arginine methyl ester reduced relaxation in both control and smoke-exposed arteries, whereas the NO donor sodium nitroprusside increased relaxation of the smoke-exposed arteries, confirming that endothelial dysfunction with decreased effective NO production is present. These findings show that precision cut lung slices can be used to examine the physiological effects of cigarette smoke on intra-acinar pulmonary arteries and indicate that even relatively short-term exposure to smoke produces endothelial dysfunction with a resulting tendency to earlier constriction and later relaxation in cigarette smokers. These changes may be important in the development of pulmonary hypertension.
Collapse
Affiliation(s)
- J L Wright
- Department of Pathology, University of British Columbia, University Hospital, 2211 Wesbrook Mall, Vancouver, BC, Canada.
| | | |
Collapse
|
36
|
Tabuchi A, Mertens M, Kuppe H, Pries AR, Kuebler WM. Intravital microscopy of the murine pulmonary microcirculation. J Appl Physiol (1985) 2008; 104:338-46. [DOI: 10.1152/japplphysiol.00348.2007] [Citation(s) in RCA: 121] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Intravital microscopy (IVM) is considered as the gold standard for in vivo investigations of dynamic microvascular regulation. The availability of transgenic and knockout animals has propelled the development of murine IVM models for various organs, but technical approaches to the pulmonary microcirculation are still scarce. In anesthetized and ventilated BALB/c mice, we established a microscopic access to the surface of the right upper lung lobe by surgical excision of a window of 7- to 10-mm diameter from the right thoracic wall. The window was covered by a transparent polyvinylidene membrane and sealed with α-cyanoacrylate. Removal of intrathoracic air via a transdiaphragmal intrapleural catheter coupled the lung surface to the window membrane. IVM preparations were hemodynamically stable for at least 120 min, with mean arterial blood pressure above 70 mmHg, and mean arterial Po2 and arterial Pco2 in the range of 90–100 Torr and 30–40 Torr, respectively. Imaged lungs did not show any signs of acute lung injury or edema. Following infusion of FITC dextran, subpleural pulmonary arterioles and venules of up to 50-μm diameter and alveolar capillary networks could be visualized during successive expiratory plateau phases over a period of at least 2 h. Vasoconstrictive responses to hypoxia (11% O2) or infusion of the thromboxane analog U-46619 were prominent in medium-sized arterioles (30- to 50-μm diameter), minor in small arterioles <30 μm, and absent in venules. The presented IVM model may constitute a powerful new tool for investigations of pulmonary microvascular responses in mice.
Collapse
|