RT Book, Section A1 Flotte, Terence R. A1 MüEller, Christian A2 Rudolph, Colin D. A2 Rudolph, Abraham M. A2 Lister, George E. A2 First, Lewis R. A2 Gershon, Anne A. SR Print(0) ID 7052010 T1 Chapter 516. Alpha-1 Antitrypsin Deficiency Lung Disease T2 Rudolph's Pediatrics, 22e YR 2011 FD 2011 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-149723-7 LK accesspediatrics.mhmedical.com/content.aspx?aid=7052010 RD 2024/04/24 AB Alpha1-antitrypsin (AAT) circulates in the plasma as a 52-kD glycoprotein. It is synthesized primarily in hepatocytes and to a lesser extent in macrophages and monocytes. AAT is produced at a basal level, which results in plasma concentrations of 11 micromole or greater. AAT is also an acute phase reactant, with levels increasing dramatically during periods of stress, fever, or infection.1-6 Some individuals with AAT deficiency manifest with neonatal liver disease, as discussed in Chapter 421. This chapter discusses the pulmonary manifestations of AAT deficiency.