National Cancer Institute Thesaurus

Last uploaded: February 23, 2024
Id http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C82258
http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C82258
Preferred Name

Alpha-1-Proteinase Inhibitor Human

Definitions
Human serum-derived alpha-1 proteinase inhibitor (alpha-1-antitrypsin or AAT) with immunomodulating and anti-inflammatory activity. Upon administration, AAT reduces the production of proinflammatory cytokines, such as tumor necrosis factor-alpha, interleukin (IL)-1 beta, IL-32, IL-6, and proteinase 3, and induces the production of anti-inflammatory cytokines, such as IL-10 and the IL-1 receptor antagonist IL-1RN. This agent also downregulates heparan sulfate and reduces the expansion of cytotoxic effector T cells, interferes with the maturation of dendritic cells and increases T regulatory cells. Altogether, AAT may attenuate acute graft-versus-host disease (GvHD) and may facilitate graft acceptance and survival. In addition, AAT enhances levels of cAMP and activation of cAMP-dependent protein kinase A. AAT, a 52kD protein and serine protease inhibitor, belongs to the serpin superfamily.
Synonyms
.ALPHA.1-PROTEINASE INHIBITOR HUMAN
Prolastin-C
Alpha-1 Antitrypsin
Alpha-1-Proteinase Inhibitor Human
Alpha 1 Antitrypsin
Alpha-1-Antiproteinase
A1AT
A1PI
AAT
Aralast
Glassia
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Type http://www.w3.org/2002/07/owl#Class
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