HLA-DR9
HLA-DR9 is a human leukocyte antigen serotype within the HLA-DR serotype group. The serotype is determined by the antibody recognition of HLA-DRB1*09 and *1001. This broad antigen group is produced by the Major Histocompatibility Complex (MHC), a gene complex in humans that plays a crucial role in immune response.
Function[edit | edit source]
HLA-DR9, like other HLA-DR antigens, is involved in the immune system's recognition of foreign substances. It presents peptides derived from extracellular proteins to T cells, which are a type of white blood cell. This presentation triggers an immune response, leading to the destruction of cells containing the foreign substance.
Association with Diseases[edit | edit source]
HLA-DR9 has been associated with several autoimmune and inflammatory diseases. These include rheumatoid arthritis, systemic lupus erythematosus, and type 1 diabetes. The exact mechanism of this association is not fully understood, but it is believed to involve the antigen's role in immune response.
Distribution[edit | edit source]
HLA-DR9 is found in varying frequencies in different populations. It is most common in East Asian populations, particularly in Japan and China. It is less common in European and African populations.
See Also[edit | edit source]
References[edit | edit source]
Navigation: Wellness - Encyclopedia - Health topics - Disease Index - Drugs - World Directory - Gray's Anatomy - Keto diet - Recipes
Search WikiMD
Ad.Tired of being Overweight? Try W8MD's physician weight loss program.
Semaglutide (Ozempic / Wegovy and Tirzepatide (Mounjaro / Zepbound) available.
Advertise on WikiMD
WikiMD is not a substitute for professional medical advice. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.
Translate this page: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
தமிழ்,
తెలుగు,
Urdu,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
বাংলা
European
español,
Deutsch,
français,
Greek,
português do Brasil,
polski,
română,
русский,
Nederlands,
norsk,
svenska,
suomi,
Italian
Middle Eastern & African
عربى,
Turkish,
Persian,
Hebrew,
Afrikaans,
isiZulu,
Kiswahili,
Other
Bulgarian,
Hungarian,
Czech,
Swedish,
മലയാളം,
मराठी,
ਪੰਜਾਬੀ,
ગુજરાતી,
Portuguese,
Ukrainian
Contributors: Prab R. Tumpati, MD