• Dr. Gaggar obtained his medical degree from the University of Michigan in 2000 as a member of the prestigious Inteflex program. He then moved to Birmingham, AL where he completed his internship and residency in internal medicine at the University of Alabama at Birmingham (UAB) in 2003. Following residency training, he began fellowship training at UAB in pulmonary and critical care medicine. During the research phase of his fellowship training, he worked in the laboratories of Dr. JP Clancy (Chief, Pediatric Pulmonology) and Dr. J. Edwin Blalock (Professor, Department of Medicine). He completed his fellowship in 2006, with special emphasis in cystic fibrosis and lung transplantation.

    The following year, Dr. Gaggar completed a PhD in Molecular and Cellular Physiology at UAB. Dr. Gaggar was invited to joined the UAB Division of Pulmonary, Allergy & Critical Care Medicine in 2006 as instructor in medicine. He currently serves as a director of the Pulmonary Biospecimen Repository and the Cystic Fibrosis Inflammation Group at UAB. He continues to see patients as both an inpatient physician and in the clinic setting. In addition, his laboratory program continues to investigate the roles of proteases in lung disease.

    Dr. Gaggar currently sees patients after lung transplantation and individuals with cystic fibrosis at University Hospital. He also holds a staff position at the Birmingham VA Medical Center (BVAMC) where he sees individuals with chronic obstructive lung disease (COPD). In addition, he serves as an attending physician at both the UAB and the BVAMC intensive care units.
  • Selected Publications

    Academic Article

    Year Title Altmetric
    2019 Differences among cigarette-only smokers compared to dual users of cigarettes and little cigars/cigarillos in the criminal justice population.Addictive Behaviors.  90:236-240. 2019
    2019 Activated PMN Exosomes: Pathogenic Entities Causing Matrix Destruction and Disease in the Lung.Cell.  176:113-126.e15. 2019
    2018 ADAM9: A Damaging Player in Chronic Obstructive Pulmonary Disease.American Journal of Respiratory and Critical Care Medicine.  198:1465-1466. 2018
    2018 Elevated circulating MMP-9 is linked to increased COPD exacerbation risk in SPIROMICS and COPDGene.JCI insight.  3. 2018
    2018 The neutrophil chemoattractant peptide proline-glycine-proline is associated with acute respiratory distress syndrome.AJP - Lung Cellular and Molecular Physiology.  315:L653-L661. 2018
    2018 Frontline Science: Pathological conditioning of human neutrophils recruited to the airway milieu in cystic fibrosis.Journal of Leukocyte Biology.  104:665-675. 2018
    2018 An extracellular matrix fragment drives epithelial remodeling and airway hyperresponsiveness.Science Translational Medicine.  10. 2018
    2018 Early Airway Microbial Metagenomic and Metabolomic Signatures are Associated with Development of Severe Bronchopulmonary Dysplasia.AJP - Lung Cellular and Molecular Physiology2018
    2018 The Neutrophil Chemoattractant Peptide Proline-Glycine-Proline Is Associated With Acute Respiratory Distress Syndrome (ARDS).AJP - Lung Cellular and Molecular Physiology2018
    2018 Fibroblast growth factor 23 and Klotho contribute to airway inflammation.European Respiratory Journal.  52. 2018
    2018 Systemic Markers of Adaptive and Innate Immunity Are Associated with Chronic Obstructive Pulmonary Disease Severity and Spirometric Disease Progression.American Journal of Respiratory Cell and Molecular Biology.  58:500-509. 2018
    2018 Exosomal microRNA predicts and protects against severe bronchopulmonary dysplasia in extremely premature infants.JCI insight.  3. 2018
    2018 Implementation of a successful eradication protocol for Burkholderia Cepacia complex in cystic fibrosis patients.BMC Pulmonary Medicine.  18:35. 2018
    2018 Airway Inflammatory/Immune Responses in COPD and Cystic Fibrosis.Mediators of Inflammation.  2018:7280747. 2018
    2017 The Matrikine Acetylated Proline-Glycine-Proline Couples Vascular Inflammation and Acute Cardiac Rejection.Scientific Reports.  7:7563. 2017
    2017 The Vitamin D for Enhancing the Immune System in Cystic Fibrosis (DISC) trial: Rationale and design of a multi-center, double-blind, placebo-controlled trial of high dose bolus administration of vitamin D3 during acute pulmonary exacerbation of cystic fibrosis.Contemporary Clinical Trials Communications.  6:39-45. 2017
    2017 Doxycycline improves clinical outcomes during cystic fibrosis exacerbations.European Respiratory Journal.  49. 2017
    2016 There is blood in the water: hemolysis, hemoglobin, and heme in acute lung injury.AJP - Lung Cellular and Molecular Physiology.  311:L714-L718. 2016
    2016 Protective effect of suppressing STAT3 activity in LPS-induced acute lung injury.AJP - Lung Cellular and Molecular Physiology.  311:L868-L880. 2016
    2016 Ureaplasma infection-mediated release of matrix metalloproteinase-9 and PGP: a novel mechanism of preterm rupture of membranes and chorioamnionitis.Pediatric Research.  81:75-79. 2016
    2016 Bioactive extracellular matrix fragments in lung health and disease.Journal of Clinical Investigation.  126:3176-3184. 2016
    2016 Absorbance and redox based approaches for measuring free heme and free hemoglobin in biological matrices.Redox Biology.  9:167-177. 2016
    2016 Matrix Remodeling in Pulmonary Fibrosis and Emphysema.American Journal of Respiratory Cell and Molecular Biology.  54:751-760. 2016
    2016 Neutrophil Fates in Bronchiectasis and Alpha-1 Antitrypsin Deficiency.Annals of the American Thoracic Society.  13 Suppl 2:S123-S129. 2016
    2016 Inhaled alpha1-proteinase inhibitor therapy in patients with cystic fibrosis.Journal of Cystic Fibrosis.  15:227-233. 2016
    2016 Toll-Like Receptor 4 Engagement Mediates Prolyl Endopeptidase Release from Airway Epithelia via Exosomes.American Journal of Respiratory Cell and Molecular Biology.  54:359-369. 2016
    2016 Alterations in blood leukocytes of G551D-bearing cystic fibrosis patients undergoing treatment with ivacaftor.Journal of Cystic Fibrosis.  15:67-73. 2016
    2016 CXCR1 Regulates Pulmonary Anti-Pseudomonas Host Defense.Journal of Innate Immunity.  8:362-373. 2016
    2016 Genetic regulation of expression of leukotriene A4 hydrolase.ERJ Open Research.  2. 2016
    2015 Changes in Mineral Micronutrient Status During and After Pulmonary Exacerbation in Adults With Cystic Fibrosis.Nutrition in Clinical Practice.  30:838-843. 2015
    2015 A Fragment in Time. Elastin Peptides and Progression of Emphysema.American Journal of Respiratory and Critical Care Medicine.  192:1141-1143. 2015
    2015 A Randomized, Placebo-controlled Trial of Roflumilast. Effect on Proline-Glycine-Proline and Neutrophilic Inflammation in Chronic Obstructive Pulmonary Disease.American Journal of Respiratory and Critical Care Medicine.  192:934-942. 2015
    2015 Addendum: Kong, M.Y.; Whitley, R.J.; Peng, N.; Oster, R.; Schoeb, T.R.; Sullender, W.; Ambalavanan, N.; Clancy, J.P.; Gaggar, A.; Blalock J.E. Matrix Metalloproteinase-9 Mediates RSV Infection in Vitro and in Vivo. Viruses 2015, 30, 7, 4230–4253.Viruses.  7:5609. 2015
    2015 Matrikines are key regulators in modulating the amplitude of lung inflammation in acute pulmonary infection.Nature Communications.  6:8423. 2015
    2015 Matrix Metalloproteinase-9 Mediates RSV Infection in Vitro and in Vivo.Viruses.  7:4230-4253. 2015
    2015 The matrikine PGP as a potential biomarker in COPD.AJP - Lung Cellular and Molecular Physiology.  308:L1095-L1101. 2015
    2015 MMP generated matrikinesCollagen and related research.  44-46:122-129. 2015
    2015 MMP generated matrikines.Collagen and related research.  44-46:122-129. 2015
    2015 Subsets of airway myeloid-derived regulatory cells distinguish mild asthma from chronic obstructive pulmonary disease.Journal of Allergy and Clinical Immunology.  135:413-424.e15. 2015
    2015 The matrikine N-α-PGP couples extracellular matrix fragmentation to endothelial permeability.Science Advances.  1. 2015
    2014 Exposure to cigarette smoke impacts myeloid-derived regulatory cell function and exacerbates airway hyper-responsiveness.Laboratory Investigation.  94:1312-1325. 2014
    2014 Fibrosis: ultimate and proximate causes.Journal of Clinical Investigation.  124:4673-4677. 2014
    2014 L-4F inhibits lipopolysaccharide-mediated activation of primary human neutrophils.Inflammation.  37:1401-1412. 2014
    2014 Development and maintenance of a biospecimen repository for clinical samples derived from pulmonary patients.Clinical and Translational Science.  7:336-341. 2014
    2014 An aberrant leukotriene A4 hydrolase-proline-glycine-proline pathway in the pathogenesis of chronic obstructive pulmonary disease.American Journal of Respiratory and Critical Care Medicine.  190:51-61. 2014
    2014 Pulmonary matrix metalloproteinase-9 activity in mechanically ventilated children with respiratory syncytial virus.European Respiratory Journal.  43:1086-1096. 2014
    2014 Factors influencing the measurement of plasma/serum surfactant protein D levels by ELISA.PLoS ONE.  9:e111466. 2014
    2014 Targeting prolyl endopeptidase with valproic acid as a potential modulator of neutrophilic inflammation.PLoS ONE.  9:e97594. 2014
    2013 Acquired cystic fibrosis transmembrane conductance regulator dysfunction in the lower airways in COPD.Chest.  144:498-506. 2013
    2013 Erratum: Elevated levels of NO are localized to distal airways in asthma (Free Radical Biology and Medicine (2011) 50 (1679-1688))Free Radical Biology and Medicine.  58:45. 2013
    2013 Anti-inflammatory mechanisms of apolipoprotein A-I mimetic peptide in acute respiratory distress syndrome secondary to sepsis.PLoS ONE.  8:e64486. 2013
    2013 Characterization and prevention of the adsorption of surfactant protein D to polypropylene.PLoS ONE.  8:e73467. 2013
    2013 IP-10 is a potential biomarker of cystic fibrosis acute pulmonary exacerbations.PLoS ONE.  8:e72398. 2013
    2012 Innate immunity in cystic fibrosis lung disease.Journal of Cystic Fibrosis.  11:363-382. 2012
    2012 CXCR1 and CXCR2 haplotypes synergistically modulate cystic fibrosis lung disease.European Respiratory Journal.  39:1385-1390. 2012
    2012 Extensive surgical and comprehensive postoperative medical management for cystic fibrosis chronic rhinosinusitis.American Journal of Rhinology.  26:70-75. 2012
    2012 MMP-9 cleaves SP-D and abrogates its innate immune functions in vitro.PLoS ONE.  7:e41881. 2012
    2012 Proline-glycine-proline as a potential biomarker in chronic obstructive pulmonary disease and cystic fibrosis.Tanaffos : Journal of Respiratory Disease, Thoracic Surgery, Intensive Care and Tuberculosis.  11:12-15. 2012
    2011 Free radical-producing myeloid-derived regulatory cells: potent activators and suppressors of lung inflammation and airway hyperresponsiveness.Mucosal Immunology.  4:503-518. 2011
    2011 The role of matrix metalloproteinases in cystic fibrosis lung disease.European Respiratory Journal.  38:721-727. 2011
    2011 Elevated levels of NO are localized to distal airways in asthma.Free Radical Biology and Medicine.  50:1679-1688. 2011
    2011 A self-propagating matrix metalloprotease-9 (MMP-9) dependent cycle of chronic neutrophilic inflammation.PLoS ONE.  6:e15781. 2011
    2011 Early elevation of matrix metalloproteinase-8 and -9 in pediatric ARDS is associated with an increased risk of prolonged mechanical ventilation.PLoS ONE.  6:e22596. 2011
    2010 A critical role for LTA4H in limiting chronic pulmonary neutrophilic inflammation.Science.  330:90-94. 2010
    2010 Is there a doctor in the house? The downside of 24/7 attending coverage in academic intensive care units.American Journal of Respiratory and Critical Care Medicine.  181:1280-1281. 2010
    2010 Human neutrophil elastase-mediated cleavage sites of MMP-9 and TIMP-1: implications to cystic fibrosis proteolytic dysfunction.Molecular Medicine.  16:159-166. 2010
    2010 Proline-Glycine-Proline (PGP) and High Mobility Group Box Protein-1 (HMGB1): Potential Mediators of Cystic Fibrosis Airway Inflammation.Open Respiratory Medicine Journal.  4:32-38. 2010
    2010 Incidence, relevance and response for Ralsfonia respiratory infections.Clinical Laboratory Science.  23:99-106. 2010
    2009 Neutrophils contain prolyl endopeptidase and generate the chemotactic peptide, PGP, from collagen.Journal of Neuroimmunology.  217:51-54. 2009
    2009 N-alpha-PGP and PGP, potential biomarkers and therapeutic targets for COPD.Respiratory Research.  10:38. 2009
    2009 The presence of a matrix-derived neutrophil chemoattractant in bronchiolitis obliterans syndrome after lung transplantation.Journal of Immunology.  182:4423-4431. 2009
    2009 Attacking the multi-tiered proteolytic pathology of COPD: new insights from basic and translational studies.Pharmacology and Therapeutics.  121:132-146. 2009
    2008 Bronchiolitis obliterans syndrome and survival following lung transplantation for patients with sarcoidosis.Sarcoidosis Vasculitis and Diffuse Lung Diseases.  25:117-124. 2008
    2008 Potential role of high-mobility group box 1 in cystic fibrosis airway disease.American Journal of Respiratory and Critical Care Medicine.  178:822-831. 2008
    2008 Inhibition of airway proteases in cystic fibrosis lung disease.European Respiratory Journal.  32:783-795. 2008
    2008 TLR expression on neutrophils at the pulmonary site of infection: TLR1/TLR2-mediated up-regulation of TLR5 expression in cystic fibrosis lung disease.Journal of Immunology.  181:2753-2763. 2008
    2008 Genetic and reproductive knowledge among adolescents and adults with cystic fibrosis.Chest.  133:1533. 2008
    2008 Interfering with extracellular matrix degradation to blunt inflammation.Current Opinion in Pharmacology.  8:242-248. 2008
    2008 A novel proteolytic cascade generates an extracellular matrix-derived chemoattractant in chronic neutrophilic inflammation.Journal of Immunology.  180:5662-5669. 2008
    2007 Matrix metalloprotease-9 dysregulation in lower airway secretions of cystic fibrosis patients.AJP - Lung Cellular and Molecular Physiology.  293:L96-L104. 2007
    2007 The ups and downs of peer review.Advances in Physiology Education.  31:145-152. 2007
    2007 Matrix metalloproteinase 9 activity enhances host susceptibility to pulmonary infection with type A and B strains of Francisella tularensis.Journal of Immunology.  178:1013-1020. 2007
    2006 Biologic markers of mortality in acute lung injury.Clinica Chimica Acta.  372:24-32. 2006


    Year Title Altmetric
    2010 Neutrophil elastase-mediated modulation of pathophysiology in cystic fibrosis lung disease.  87-111. 2010

    Research Overview

  • Dr. Gaggar's laboratory interests focus on the roles proteases play in modulation of lung disease. Dr. Gaggar utilizes a combination of cell-based systems, unique murine models, and clinical specimens, leading to research which is truly "translational" in nature. The Gaggar lab's interests focus on 3 major arenas: proteases and neutrophilic airway inflammation, proteases and ion transportation, and the Regulation of Surfactant Protein D by Airway Proteases.

    Recently, Dr. Gaggar's laboratory and Dr. J. Edwin Blalock's laboratory have worked together to describe the proteolytic pathways involved in the generation of a novel neutrophil chemoattractant, proline-glycine-proline (PGP). Dr. Gaggar's group has shown that this chemoattractant is generated by the cleavage of collagen by matrix metalloprotease (MMP)-8 and MMP-9, in conjunction with a novel serine protease, prolyl endopeptidase (PE). Dr. Gaggar's group has also highlighted the relative contribution of PGP in development of BOS, demonstrating for the first time the impact this peptide might play in clinical lung disease. Ongoing efforts are now being focused in further delineation of the biological roles PGP may induce in the airway beyond neutrophil recruitment.
  • Investigator On

  • A Novel Exosomal Inflammatory Pathway  awarded by National Heart, Lung, and Blood Institute/NIH/DHHS 2017 - 2023
  • Environmental Cadmium and COPD  awarded by National Institute of Environmental Health Sciences/NIH/DHHS 2018 - 2023
  • UAB CF Research and Translation Core Center  awarded by National Institute of Diabetes and Digestive and Kidney Diseases/NIH/DHHS 2018 - 2023
  • UAB CF Research and Translation Core Center - Admin Core  awarded by National Institute of Diabetes and Digestive and Kidney Diseases/NIH/DHHS 2018 - 2023
  • UAB CF Research and Translation Core Center - Core C  awarded by National Institute of Diabetes and Digestive and Kidney Diseases/NIH/DHHS 2018 - 2023
  • Standardized Treatment of Pulmonary Exacerbations II  awarded by SEATTLE CHILDREN'S HOSPITAL 2016 - 2019
  • Cellular Lipids and Leukocyte Function  awarded by National Institute of General Medical Sciences/NIH/DHHS 2015 - 2019
  • Genetics of Smoke-Altered LTA4H in COPD  awarded by National Heart, Lung, and Blood Institute/NIH/DHHS 2015 - 2019
  • Matrix Metalloproteinase Driven Lung Inflammation in RSV Disease  awarded by National Heart, Lung, and Blood Institute/NIH/DHHS 2014 - 2019
  • Private Grant  awarded by CELTAXSYS, INC. 2016 - 2019
  • Targeted Cell Therapy for Acute Lung Injury  awarded by National Heart, Lung, and Blood Institute/NIH/DHHS 2016 - 2018
  • Proof of Principal Evaluation of IV Gallium Nitrate (Ganite) in Patients with Cystic Fibrosis  awarded by SEATTLE CHILDREN'S HOSPITAL 2013 - 2018
  • UAB Cystic Fibrosis Center for Care, Teaching, and Research (Adult)  awarded by Cystic Fibrosis Foundation 2011 - 2017
  • Private Grant  awarded by NIVALIS THERAPEUTICS, INC. - NEW 2016 - 2017
  • Private Grant  awarded by PROQR THERAPEUTICS 2015 - 2016
  • Private Grant  awarded by VERTEX PHARMACEUTICALS, INC. 2013 - 2016
  • Molecular Pathogenesis and Phenotype of Acquired CFTR Dysfunction in COPD  awarded by National Heart, Lung, and Blood Institute/NIH/DHHS 2011 - 2016
  • Private Grant  awarded by NOVARTIS INSTITUTES FOR BIOMEDICAL RESEARCH, INC. 2014 - 2016
  • Private Grant  awarded by INSMED PHARMACEUTICALS, INC. 2012 - 2016
  • Private Grant  awarded by VERTEX PHARMACEUTICALS, INC. 2012 - 2015
  • Private Grant  awarded by VERTEX PHARMACEUTICALS, INC. 2010 - 2014
  • Private Grant  awarded by VERTEX PHARMACEUTICALS, INC. 2013 - 2014
  • Private Grant  awarded by VERTEX PHARMACEUTICALS, INC. 2012 - 2014
  • Pediatric Critical Care Scientist Development Program: "RSV-Induced Respiratory Failure: Role of MMP-9 in Lung Injury Through Generation of PGP"  awarded by University of Utah 2012 - 2013
  • Education And Training

  • Doctor of Medicine, University of Michigan System : Ann Arbor
  • Doctor of Philosophy in Molecular Physiology, University of Alabama at Birmingham
  • UAB Hospital, Internship 2001
  • UAB Hospital, Residency 2003
  • UAB Hospital, Postdoctoral Fellowship 2006
  • Full Name

  • Amit Gaggar
  • Blazerid

  • agaggar