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Biomedical subjects

Y Nose

Publications and source records attributed to Y Nose.

At least 235 records · Page 13Linked to original sources

Relationship between HLA-D and in vitro and in vivo responsiveness to Candida allergen.

In vitro reaction to Candida allergen was studied in 100 normal healthy Japanese and related to HLA. A significant association was found between the low responder group (< 7,000 c.p.m.) and HLA-B15 and the high responder group (> 7,000 c.p.m.) and HLA-B7, as well as Dwl. Four HLA-D homozygote cells of types HLA-Dwl and DHO, were tested; these fitted in the high responder group. HLA-DYT and DEn fitted into the low responder group. Responsiveness to Candida allergen corresponded to skin test (r = 0.884, P < 0.01). From these results, in vitro lymphocyte reaction to Candida allergen and skin tests showed close correlation and an association with HLA antigens, HLA-D in particular.

Adult↗

Study on HLA system in IgA nephropathy.

Forty Japanese patients with IgA nephropathy were typed for HLA-A and HLA-B using local antisera. Thirty-seven of these patients were typed for HLA-D using homozygous cells "En", now known to be strongly related to DRw6. Forty-six patients with chronic hemodialysis were used as patient controls for renal disease and 115 healthy individuals were used as normal controls. The frequency of HLA-DEn was significantly increased in 17 out of 37 patients with IgA nephropathy, (46%) (normal controls 18.3%) (P less than 0.0007). Although the occurrence of HLA-B12 was high, it was not significant, i.e. 11 out of 40 (27.5%). These results suggest that some abnormality in the genes of patients with IgA nephropathy is more closely associated with the HLA-D region than the HLA-A or B regions.

Adolescent↗

Further study on HLA-A, B, C, D, DR and haplotype antigen frequencies in psoriasis vulgaris.

HLA-A, B, C, D, and DR antigens in 40 Japanese patients with psoriasis vulgaris were analysed using the antisera obtained from the Seventh International Histocompatibility Workshop. The most deviant HLA antigens in psoriasis were found to be HLA-Cw6 and DRw7. by observing the HLA-A, B, C and DR antigens en bloc in psoriasis, it is shown that the statistically significantly associated haplotype antigens were HLA-A1, B13, Cw6 and DRw7, and A1, B37, Cw6 and DRw6 respectively. No HLA-Dw11 (LD17) antigen was associated with the disease.

Epitopes↗

[A new method for the determination of serum human placental lactogen (HPL) by single radial immunodiffusion (author's transl)].

The general radioimmunoassay (RIA) currently employed for the determination of serum HPL requires a special apparatus and a complicated technique. Therefore, in order to simplify the assay we tried to develop a new method using single radial immunodiffusion (SRID). Basic examinations were made to establish a simplified HPL assay method by SRID. The optimal conditions finally decided for SRID were as follows: the thickness of the agar plate, 1.5 mm; the diameter of the well, 3 mm; the amount of antigen added, 10 microliter; antibody concentration, 1.0% for the measurement range from 1.0 microgram/ml to 16 microgram/ml and 0.5% for the measurement range from 0.25 microgram/ml to 1.0 microgram/ml. Under these conditions serum HPL was detectable after the 9th week of gestation, and antigen was measurable over 0.25 microgram/ml. Serum HPL values measured by RIA and SRID from the 9th to the 42nd week of gestation in 138 normal pregnant women were identical, and the correlation was highly significant (r = 0.842, p less than 0.001). This SRID method was as reliable and sensitive as the RIA and made it easier than the RIA to measure the serum HPL of pregnant women. Therefore, with regard to placental function its clinical application should prove to be certainly beneficial.

Female↗