PMID- 28752442 OWN - NLM STAT- MEDLINE DCOM- 20180416 LR - 20200306 IS - 1940-6029 (Electronic) IS - 1064-3745 (Linking) VI - 1639 DP - 2017 TI - Pathophysiology of Alpha-1 Antitrypsin Lung Disease. PG - 9-19 LID - 10.1007/978-1-4939-7163-3_2 [doi] AB - Alpha-1 antitrypsin deficiency (AATD) is an inherited disorder characterized by low serum levels of alpha-1 antitrypsin (AAT). Loss of AAT disrupts the protease-antiprotease balance in the lungs, allowing proteases, specifically neutrophil elastase, to act uninhibited and destroy lung matrix and alveolar structures. Destruction of these lung structures classically leads to an increased risk of developing emphysema and chronic obstructive pulmonary disease (COPD), especially in individuals with a smoking history. It is estimated that 3.4 million people worldwide have AATD. However, AATD is considered to be significantly underdiagnosed and underrecognized by clinicians. Contributing factors to the diagnostic delay of approximately 5.6 years are: inadequate awareness by healthcare providers, failure to implement recommendations from the American Thoracic Society/European Respiratory Society, and the belief that AATD testing is not warranted. Diagnosis can be attained using qualitative or quantitative laboratory testing. The only FDA approved treatment for AATD is augmentation therapy, although classically symptoms have been treated similarly to those of COPD. Future goals of AATD treatment are to use gene therapy using vector systems to produce therapeutic levels of AAT in the lungs without causing a systemic inflammatory response. FAU - Kalfopoulos, Michael AU - Kalfopoulos M AD - Division of Pulmonary Medicine, Department of Pediatrics, University of Massachusetts Medical School, 55 Lake Ave. North, Worcester, MA, 01655, USA. AD - Department of Gene Therapy, University of Massachusetts Medical School, 55 Lake Ave. North, Worcester, MA, 01655, USA. FAU - Wetmore, Kaitlyn AU - Wetmore K AD - Division of Pulmonary Medicine, Department of Pediatrics, University of Massachusetts Medical School, 55 Lake Ave. North, Worcester, MA, 01655, USA. AD - Department of Gene Therapy, University of Massachusetts Medical School, 55 Lake Ave. North, Worcester, MA, 01655, USA. FAU - ElMallah, Mai K AU - ElMallah MK AD - Division of Pulmonary Medicine, Department of Pediatrics, University of Massachusetts Medical School, 55 Lake Ave. North, Worcester, MA, 01655, USA. mai.elmallah@umassmemorial.org. AD - Department of Gene Therapy, University of Massachusetts Medical School, 55 Lake Ave. North, Worcester, MA, 01655, USA. mai.elmallah@umassmemorial.org. LA - eng GR - R21 NS098131/NS/NINDS NIH HHS/United States PT - Journal Article PT - Review PL - United States TA - Methods Mol Biol JT - Methods in molecular biology (Clifton, N.J.) JID - 9214969 SB - IM MH - Humans MH - Lung Diseases/diagnosis/epidemiology/*physiopathology/therapy MH - alpha 1-Antitrypsin Deficiency/diagnosis/epidemiology/*physiopathology/therapy OTO - NOTNLM OT - Alpha-1 antitrypsin OT - Alpha-1 antitrypsin deficiency OT - Chronic obstructive pulmonary disease (COPD) OT - Emphysema OT - Neutrophil Elastase EDAT- 2017/07/29 06:00 MHDA- 2018/04/17 06:00 CRDT- 2017/07/29 06:00 PHST- 2017/07/29 06:00 [entrez] PHST- 2017/07/29 06:00 [pubmed] PHST- 2018/04/17 06:00 [medline] AID - 10.1007/978-1-4939-7163-3_2 [doi] PST - ppublish SO - Methods Mol Biol. 2017;1639:9-19. doi: 10.1007/978-1-4939-7163-3_2.