Human Leukocyte Antigen (HLA) part 50

hla protein 1

 

Deficiency of HLA molecules

HLA class I deficiency is a rare disease with remarkable clinical and biological heterogenicity. The spectrum of  possible manifestations extends from the complete absence of symptoms to life-threatening disease conditions. It is usually diagnosed when HLA class I serological typing is unsuccesful, flowcytometric studies then reveal a severe reduction in the cell surface expression of HLA class I molecules (90-99% reduction compared to normal cells). Isolated HLA class I deficiency, also termed “type I bare lymphocyte syndrome” , is not usually life threathening, in contrast to the more severe  HLA class II deficiency and combined  HLA class I and class II deficiencies. The symptoms present in the majority of the patients are rather unexpected, considering the role of HLA class I molecules in the presentation of viral peptides to cytotoxic T lymphocytes.

Advertisements

About azaleaazelia

A nice person... :)
This entry was posted in Tak Berkategori. Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s