Immune T cells proliferate in response to antigen that is recognized in association with self-Ia determinants. T cells from a patient with severe combined immunodeficiency that has been successfully reconstituted with haplotype-mismatched, maternal bone marrow were studied in an attempt to understand the development of Ia restriction of antigen recognition in man. All the patient's T cells were...

BACKGROUND We investigated the immunoreguratory role of the major histocompatibility complex in peripheral blood lymphocytes' proliferative response to mite antigen. METHOD Peripheral blood lymphocytes of Japanese asthmatic patients were incubated with antigen obtained from Dermatophagoides pteronyssinus with a molecular weight of about 15,000, with and without 0.05 microgram/mL of monoclonal...

Birdshot chorioretinopathy is a rare idiopathic pathology. It characterized by diffuse white spots in the retina and especially middle periphery. All patients are carriers of antigen HLA 29. Its treatment based administration corticosteroids suppressant medication. We report case young patient who had birdshot chorioretinopathy.

Background & Objective: Unexplained recurrent spontaneous abortion (URSA) is defined as an unknown cause of occurrence of three or more clinically detectable pregnancy losses before 20 weeks of gestation, but it occurs presumably as a result of the immune system dysfunctions. We supposed that the disruption of semen or spermatozoa might be responsible for the dysfunction of the...

CD4(+) T cells play a central role in adaptive immunity. The acknowledgment of their cytolytic effector function and the finding that endogenous antigens can enter the HLA class II processing pathway make CD4(+) T cells promising tools for immunotherapy. Expression of HLA class II and endogenous antigen, however, does not always correlate with T-cell recognition. We therefore investigated proce...

Human eosinophils are known to lose Ia antigen expression as they mature, and, accordingly, eosinophils obtained from the blood of five eosinophilic donors and three of four normal donors failed to display the major histocompatibility complex class II antigen HLA-DR, as determined by flow cytometry. However, when eosinophils from these nine donors were maintained in culture with recombinant hum...

there is some data in the literature on the association of hla-b5 and some manifestations of behçet's disease (bd), especially ocular lesions. we studied 433 patients to see if there was any relationship between b51 and the manifestations of the disease. clinical manifestations of bd were compared in patients having hla-b51 (155 patients) and those lacking hla-b51 (278 patients). oral aphthosis...

PURPOSE Identification of tumor antigen and subsequent identification of T-cell epitope from these antigens make specific immunotherapy for malignant tumor applicable. Because TRAG-3 antigen is expressed in most melanomas and 54% of non-small cell lung carcinomas and HLA-A2.1-expressing individuals cover >50% in the population of China, we aim at identifying TRAG-3-encoded peptide presented by ...

The regulation of immune mechanisms is controlled by major histocompatibility complex/human leukocyte antigen (MHC/HLA). Polymorphisms the HLA region have an impact on susceptibility to complex infectious and autoimmune diseases. present study was carried out determine frequencies ASMA, AMA, ANA, dsDNA, anti-LKM-1 auto-antibodies in hepatitis C patients their association with DRβ1 (*04) locus. ...

AIM The purpose of this study was to investigate the clinical significance of expression of cancer/testis (CT) antigen and down-regulation of HLA class-I in patients with stage I non-small cell lung cancer (NSCLC), which underwent complete surgical resection. PATIENTS AND METHODS The expression of HLA class-I molecules was evaluated in 136 resected NSCLC specimens by immunohistochemistry. The...