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Biomedical subjects

H Grosse-Wilde

Publications and source records attributed to H Grosse-Wilde.

At least 163 records · Page 9Linked to original sources
PubMed1986

Revised classification of the DLA loci by serological studies.

Peripheral blood mononuclear cells from DLA typed dogs were treated with rabbit-anti-dog-beta 2-microglobulin and subsequently with goat-anti-rabbit-immunoglobulin in order to aggregate the DLA class I molecules on the cell membrane (lysostrip). Utilizing a panel of 70 defined DLA-A and DLA-B antisera, lymphocytes treated in this way showed resistance to complement dependent lysis with monospecific DLA-A sera only, whereas reactivity of DLA-B antisera was not blocked; on the contrary, complete lympholysis with each DLA-B antiserum was recognized. Thus, the DLA-B antigens, evidently not associated with beta 2-microglobulin, are designated as candidates for class II gene products. The different reactions of DLA-C antisera after lysostrip did not allow a precise assignment of this antigen series as yet.

Alleles↗
PubMed1985

Polymorphism of human C2 detected by immunoblotting.

To allotype human complement component C2, thin layer agarose gel isoelectric focusing of human serum and/or EDTA-plasma was performed followed by direct immunofixation or by immunoblotting with a specific anti-human-C2 antibody. Using reference samples for C2 BC phenotypes and local samples from an HLA, C4, and Bf genotyped family, a differentiation of the C2*B and C2*C variants segregating with the respective HLA haplotype was achieved. The C2 BC phenotype is characterized by a double banding pattern similar to that observed in the haemolytic overlay assay usually used for the detection of C2 polymorphism. An homozygous C2*Q0 reference sample determined by functional assays was shown to be biochemically deficient, as demonstrated by immunofixation and immunoblotting. The visual interpretation of C2 phenotypes was definitely easier after immunofixation and immunoblotting than after an haemolytic overlay assay. In addition, the method for C2 allotyping described here has several advantages, in particular it saves time and tolerates repeated thawing and freezing of the samples.

Complement C2↗
PubMed1985

Polymorphism of the fourth complement component in the dog.

The polymorphism of the fourth complement component was studied in 118 unrelated dogs from different breeds and 73 unrelated beagles. In the mixed breed population, five different variants were observed with the following gene frequencies: C4*1 = 3.9%; C4*2 = 13.6%; C4*21 = 6.0%; C4*3 = 9.0% and C4*4 = 51.1%. In beagles, only four variants could be identified with gene frequencies of C4*2 = 24.2%; C4*21 = 1.4%; C4*3 = 20.6% and C4*4 = 46.3%. In both populations analyzed positive linkage disequilibria between certain DLA antigens and C4 variants were recognized. The biochemical analysis of the canine C4 revealed a double-banding pattern for the C4 alpha chain which gives preliminary evidence for two gene loci encoding for the fourth complement component in the dog.

Animals↗
PubMed1985

Treatment of hairy-cell leukemia with recombinant leukocyte A interferon.

A 29-year-old male patient with hairy-cell leukemia was referred for bone marrow transplantation. For tumor mass reduction a treatment with recombinant leucocyte A interferon was started. A complete remission could be achieved in the third month of treatment and no adverse side effects were observed. The patient refused bone marrow transplantation and a relapse was diagnosed 51 days after discontinuation of interferon therapy. Treatment of hairy-cell leukemia with recombinant leukocyte A interferon seems to be a promising approach.

Adult↗
PubMed1984

[Lymphocyte function in children with iron deficiency].

In 23 children with mild iron-deficiency anemia, 22 children with latent iron-deficiency, and in 46 healthy controls the 3H-thymidine incorporation in blood lymphocytes after stimulation with phytohemagglutinin, concanavalin A, pokeweed mitogen, and serum against thymocyte cells was measured. In 11 of the children with iron-deficiency anemia, in 13 of the children with latent iron-deficiency, and in 20 controls the lymphotoxin secretion after phytohemagglutinin stimulation was also performed. All patients studied were without intercurrent infections and were well nourished. No alteration of the lymphocyte function in the patients was found. The concentrations of immunoglobulins and the components C3 and C4 of complement system were also found to be normal. It is suggested that lymphocyte functions are eventually only altered in more severe states of iron-deficiency anemia.

Anemia, Hypochromic↗
PubMed1984

Laminar air flow versus barrier nursing in marrow transplant recipients.

Forty-eight patients with acute leukaemia in relapse (n = 14), acute leukaemia in complete remission (n = 19), chronic myeloid leukaemia (n = 8) or severe aplastic anaemia (n = 7) received a marrow transplant. The first 26 patients were nursed in laminar-air-flow plastic isolators while the next 22 patients were treated in barrier nursing rooms. Gnotobiotic parameters and morbidity in the 2 groups are compared. Good decontamination of the gastro-intestinal tract was obtained using either of the 2 isolation techniques. The incidence of bacterial and mycotic infections, as well as the supportive care required by the patients was almost equal in both groups. Our results also suggest that the incidence of graft versus host disease may decrease with efficient decontamination of the patients.

Anemia, Aplastic↗
PubMed1984

HLA-D and -DR antigens on human amniotic fluid cells. II. Heterogeneous expression of HLA-DR and other cell surface markers.

To evaluate further the feasibility of HLA typing for prenatal diagnosis, we tested human amniotic fluid cells (AFC), known to express HLA-A, -B, and -C antigens, for the presence of HLA-DR antigens using type-specific antisera in the microcytotoxicity assay and a monoclonal antibody directed against the common HLA-DR structure (cDR) in indirect immunofluorescence. Prenatal typing of HLA-DR on AFC in the microcytotoxicity test was possible in only one out of eight families studied. The detected DR2 antigen was confirmed by postnatal typings of cord blood lymphocytes. Thereafter, 23 different AFC cultures were tested with monoclonal antibodies in indirect immunofluorescence. Only six cultures were partially positive (23-35% fluorescent cells) with the monoclonal cDR antibody while all AFC cultures demonstrated strong positive fluorescence (68-100%) with a monoclonal antibody against the common HLA-A, -B, and -C structure (cHLA). These data suggest that only a small subpopulation of AFC expresses class II (HLA-DR) antigens in contrast to the nearly ubiquitous expression of class I (HLA-A, -B, and -C) antigens. Furthermore, the heterogeneous expression of cell surface antigens within the various AFC cultures was substantiated with monoclonal antibodies directed toward cell surface antigens of the OKT, OKM, and Lyt series that have been found to be characteristic for subpopulations of lymphoid and hemapoetic cells. Thus, at present, HLA-DR typing is not reliable for prenatal diagnosis.

Amniotic Fluid↗
PubMed1983

[Immunogenetics of myasthenia gravis. Significance of HLA-, complement and Cm gene systems for clinical and immunologic parameters].

In 82 non-related patients with myasthenia gravis the following immunogenetic marker systems were investigated: HLA-A, -B, -C, -DR antigens, complement polymorphisms for Bf, C3 and C4 as well as immunoglobulin allotypes G1m, G3m and Km. In 78 patients the level of circulating acetylcholin receptor autoantibody was measured. The HLA antigens showed no significant differences in frequency when compared with healthy controls. This was also true for the HLA-bound Bf and C4 polymorphism, the non-HLA-bound C3 polymorphism and the immunoglobulin allotypes. A significant (P less than 0.005) increase in heterozygote frequency of 39.7% in the Gm allotype combination G1m (1), (17); (3) when compared with an expected frequency as calculated from the gene frequency of 19.8% was found. HLA-B8 and/or HLA-DR3 positive myasthenia gravis patients showed a significantly (P less than 0.025 and less than 0.005) earlier average onset of the disease whereas in HLA-DR2 positive patients the average onset was later (P less than 0.05). The same HLA antigens correlated with quantitative differences in the acetylcholine receptor autoantibodies: HLA-B8 and/or -DR3 positive patients had on average higher antibody levels than HLA-B8 or -DR3-negative patients. The difference for HLA-DR3 was statistically significant (P less than 0.05). On the other hand patients with HLA-DR2 antigens had significantly lower antibody levels (P less than 0.025). Increased mean antibody levels were also seen in G1m(1), (17) allotype (P less than 0.005) and G3m(21) (P less than 0.05). As the HLA antigens and Gm allotype genes are situated on different chromosomes (C6 and C14) two distinct gene regions are identified in myasthenia gravis. These are associated with quantitative differences in acetylcholine receptor antibody titres.

Autoantibodies↗
PubMed1983

HLA-D and -DR antigens on human amniotic fluid cells. I. Lack of expression of HLA-D.

Human amniotic fluid cells, known to express HLA-A, -B, and -C antigens, were tested for the presence of lymphocyte-stimulating antigens (LD or HLA-D) using modifications of the mixed lymphocyte culture (MLC) and primed lymphocyte typing (PLT) tests. Peripheral blood lymphocytes were co-cultured with various concentrations of allogeneic amniotic fluid cells, either growing as a monolayer culture in microtiter plates or suspended in medium following treatment with trypsin. The kinetics of such mixed lymphocyte amniotic fluid cell culture (MLAC) reactions were followed during days 3 to 8. Under none of these conditions did amniotic fluid cells significantly stimulate allogeneic lymphocytes, even after lymphocytes were specifically primed in the PLT assay to the HLA-D antigens segregating in the family of the amniotic fluid cell donor. Furthermore, in three-cell experiments, amniotic fluid cells failed to inhibit an ongoing MLC reaction, indicating that the absence of proliferative response to amniotic fluid cells is not due to active suppression. Taken together, these data strongly suggest that amniotic fluid cells either do not express HLA-D antigens or do not express them in a form that is detectable in either primary or secondary MLC.

Amniotic Fluid↗
PubMed1983

HLA-DB3: population distribution and family studies of a new HLA-D antigen associated with HLA-D antigen associated with HLA-DR4 in Caucasoids.

On the basis of studies with 6 HTCs in four different families the new cluster DB3 identified in the 8th Workshop can be considered an established specificity of the HLA-D series. In 112 healthy Caucasoids resident in South East England the frequency of this antigen was 2.6% similar to the frequency found in 142 Caucasoid patients with rheumatoid arthritis. The frequency in 54 unrelated Chinese individuals from Shanghai and of 120 Nigerians was 7.5% and 3%, respectively. All Caucasoid individuals who were DB3 were also DR4 whereas no such association was found in the two other population groups.

Asian People↗
PubMed1983

Correlation between immunogenetic markers and "in vivo" response to the german hepatitis B vaccine.

The antibody response to the German HB-vaccine in 100 volunteers was investigated with respect to the individual immunogenetic markers. After 3 doses of vaccine at days 0, 28 and 140, 7 serum samples were collected at days 0, 28, 56, 98, 140, 154, 168 and anti-HBs concentrations determined. Seroconversion was 96% after the 3rd injection with a mean antibody concentration of 947 mIU/ml. On the basis of antibody values on day 154 four groups of responders could be observed. Nonresponders, late and low responders, early and high responders and mixed type high responders with an early peak (IgM) between days 28 and 42. Assigning immunogenetic markers of the HLA-system and immunoglobulin G-allotype system to the different groups yielded evidence that HLA-DR3 is associated with higher antibody production towards HBsAg.

Adolescent↗
PubMed1983

HLA-D "BG" in Israel. A Japanese related allele population and family study.

An homozygous typing cell for a local HLA-D determinant"BG", defined by family study, is described. HLA-D "BG" recognizes a specificity identical to the Japanese HLA-DHO (Dw12). Two families and 102 randomly selected healthy Israeli individuals were typed for the HLA-D "BG" determinant. HLA-D "BG" showed segregation as a single determinant within families. The gene frequency for this allele was 0.045, compared to the frequency of 0.148 for DHO in Japanese. In the Israeli population "BG" is in strong association with HLA-Bw52 (joint occurrence = 7.80%) and DR2 (joint occurrence = 8.80%), resembling the data reported foar DHO (Dw12) in Japan. The frequency of this allele may partially account for the low frequency of HLA-Dw2 in the Israeli population.

Alleles↗
PubMed1982

[Bone marrow transplantation for aplastic anaemia and acute leukaemia (author's transl)].

Twenty-six bone marrow transplantations were performed at the West Germany Tumour Centre at Essen between December 1975 and December 1981. Three patients had aplastic anaemia, 23 acute leukaemia. Of the leukaemia patients 13 had a recurrence and ten were in full remission at the time of the transplantation. Two of the patients with a recurrence received deep-frozen autologous marrow from the remission phase. One patient with aplastic anaemia had an identical twin as donour, while all other patients received allogeneic marrow from histocompatible family members. Eleven patients are still alive, all three of those with aplastic anaemia, one of those with leukaemia in a recurrence, and seven of those with acute leukaemia in full remission. Two of the survivors have a chronic graft-host reaction, but the others are symptom-free, after an observation period of up to four years. Main causes of death were leukemic recurrence (6), infection (5), and graft-host reaction (2). It would seem that at present bone marrow transplantation offers the best chance of a cure for severe aplastic anaemic and acute leukaemia in adults, but only if transplantation is undertaken early and not in the end-stage of the disease.

Acute Disease↗