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Biomedical subjects

B Löw

Publications and source records attributed to B Löw.

35 records · Page 2Linked to original sources
PubMed1977

Confounding factors in HLA-DW 2 typing of human leucocytes.

Three healthy HLA-B7 homozygous subjects were found with similar but not identical HLA-D antigens; one was DW 2 homozygous according to independent typing results. This could be an expression of "long" and "short" HLA-D antigens or be due to differences in weak antigens outside the HLA-D region. Two further healthy HLA-B7 homozygous subjects were studied; one was apparently heterozygous for DW 2, the other apparently carried no DW 2 antigen. Both could discriminate between different DW 2 homozygous test cells. Two such test cells--one from a patient with multiple sclerosis (MS) and the other from a man with two children with MS--gave variable and absurb reactions with cells from the two subjects in question. It is tentatively suggested that genes exist which, when present in both moities in a mixed leucocyte reaction (MLR), can impair the MLR and give false "typing" reactions. This might be more common among patients with MS and perhaps also some other diseases (certain arthritides, e.g. rheumatoid arthritis) than among healthy subjects and can complicate or make impossible the interpretation of HLA-D typing data. It could also explain the previously-described impaired MLR between cells from patients with these diseases.

HLA Antigens↗
PubMed1977

Blood transfusion and kidney transplantation.

During the years 1968--1976, 115 nondiabetic primary cadaveric transplantations were performed in southern Sweden. For 95 of these patients there was an observation period of at least one year. 32% of these patients had never received a blood transfusion. These recipients had an lower one year graft survival (33%) than those who had received one or more transfusions (48%). Patients who had received more than five transfusions did not show a higher graft survival than other transfused kidney recipients. Presence of cytotoxic antibodies also decreased the one year graft survival both in the transfused and not transfused patient groups.

Antibodies↗
PubMed1976

HLA-antigen b27 in cases with joint affections in an outbreak of salmonellosis.

An outbreak of infection with Salmonella typhi murium occurred in southern Sweden in the summer of 1974. About 330 persons were infected; 91 were hospitalized. 13 of the 91 patients (9 men and 4 women) had symptoms of aseptical polyarthritis. The 13 patients with arthritis were HLA typed with a standard microlymphocytotoxicity test. 13 salmonellosis patients from the same epidemic but without arthritis and 446 healthy blood donors served as controls. Nine (69%) of the 13 patients with arthritis had HLA-B27 compared to 1 (8%) of the control patients and 44 (10%) of the blood donors. The observed association between HLA antigen B27 and reactive arthropathy following salmonella infection could be due to a function of a disease predisposing gene closely linked to HLA-B27.

Adolescent↗
PubMed1975

Mixed leukocyte reaction and hl-a specificity at multiple sclerosis.

Compared with the mixed leukocyte reaction (MLR) between cells from healthy individuals, the MLR between cells from two patients with multiple sclerosis (MS) is, on average, reduced in strength. There is a tendency for the most marked reduction of MLR to occur when both or neither of the members in a tested pair carry HL-A7, and when cells from patients in a relatively early stage of the disease (short duration, relapses but no permanent disablement) are studied; especially when cells from these patients are used as reactor clels in the MLR. Repeated studies of the same cell combinations with varying intervals showed that when both members of the pair carry HL-A7,--and therefore have a large chance also to carry LD-7a--the MLR strength is relatively constant. When only one or neither of the members carry HL-A7, the strength of MLR varies considerably. Probably two different mechanisms exist in MLR impairment: similarity of LD genes, and "immunosuppressive" factors which can vary during the course of the disease.

Epitopes↗
PubMed1975

Schizophrenia susceptibility and HL-A antigen.

The phenotype frequencies of HL-A specificities have been investigated in 47 chronic schizophrenics subdivided in an older and a younger group. The frequency of HL-A 9 was significantly increased in the psychotics as compared to a reference group of 1,263 healthy blood donors, pregnant women and potential kidney donors. Deviations in frequency were also found concerning W 19 and HL-A 5. As HL-A 9 was mainly found in the older group of schizophrenics, it is suggested that HL-A 9 might be associated to some form of schizophrenia with a chronic course.

Adult↗