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Biomedical subjects

A Tiilikainen

Publications and source records attributed to A Tiilikainen.

At least 73 records · Page 4Linked to original sources
PubMed1981

Pulmonary apical fibrocystic disease. A serologic study.

Common aetiopathogenic factors were sought in 12 patients with progressive pulmonary apical fibrocystic changes, active human-type tuberculosis excluded. HLA-typing did not reveal any clear-cut trends; only the three patients with ankylosing spondylitis or Reiter's disease were HLA-B27 positive. Six patients had HLA-Cw3, which exceeds the prevalence in referents, antibodies, as well as other tissue antibodies, were mainly negative so that autoimmune aetiology is not likely. Similarly, antimicrobial antibodies were found occasionally, while low-titred influenza antibodies were positive in all patients. Serum proteins, immunoglobulins, rheumatoid factor and C-reactive protein were suggestive of chronic inflammation, as were low positive titres of smooth muscle antibodies in nine patients. In spite of the uniform clinical picture and course of the disease, no uniform aetiopathogenic factors were found, but possible unidentified slow- and low-grade viral or fungal infection is discussed.

Adult↗
PubMed1981

HLA-antigen distribution in juvenile diabetics with end-stage nephropathy.

Diabetic nephropathy with renal failure is a major cause of death among juvenile diabetics. It is as yet unknown why some diabetics suffer from this serious renal complication while others do not, in spite of long duration of diabetes. For therapeutic reasons it is of the utmost importance to find out which patients are at risk long before the manifestation of renal insufficiency. Juvenile diabetics are know to have an increased frequency of some HLA antigens. The relationships between the HLA-A, HLA-B and HLA-C antigens and diabetic end-stage nephropathy were therefore evaluated in the present study. The study comprised 121 insulin-dependent diabetics with renal failure (mean age at onset of diabetes 13.4 leads to 7.6 (SD) years, mean pre-uraemic duration of diabetes 21.7 leads to 4.7 years), and 36 insulin-dependent diabetics (mean age at onset of diabetes 16.5 leads to 8.4 years) without renal failure despite long mean duration of diabetes (32.5 leads to 5.1 years). We found the expected significant increase in B8 and B15 and a decrease in B7 frequencies in the diabetics compared with the non-diabetic population, but no difference was found between uraemic and non-uraemic diabetics. Neither the early onset of diabetes nor the rapid appearance of renal failure was associated with any HLA frequency. The data therefore do not provide evidence of the involvement of B8 or B15 allele-associated mechanisms in the disease process leading to diabetic nephropathy with renal failure. There was a significant difference (p corrected less than 0.01) between the frequency of Bw22 in uraemic diabetics (14%) and that in non-diabetics (5%) while the frequency was near normal in non-uraemic diabetics. Further data are needed to confirm the possible association of Bw22 with diabetic nephropathy.

Adult↗
PubMed1981

Immunodeficiency associated with a deletion in the short arm of the X-chromosome.

The immunocapacity of a 28-year-old mentally retarded proband and her clinically normal mother and sister, all having a deletion of the short arm of one of the X-chromosomes [46, X, del (X) (pter to 22: :p11 to qter)], was evaluated. The concentrations of immunoglobulin IgA (0 . 4 g/l), IgG (4 . 4 g/l) and IgM (0 . 2 g/l) were low in the proband. The serum IgA (0 . 9 g/l) concentration of her mother was also at the lower normal limit. The serum concentration of complement component C4 was low both in the proband (0 . 17g/l) and in her mother (0 . 18 g/l). Phagocytosis and killing of bacteria by granulocytes were normal in all of them. However, the chemotactic response of granulocytes was at the lower normal level in the patient. The in vitro responses of peripheral blood lymphocytes to the polyclonal T-clonal mitogens, PHA and Con A, were about half normal in the patient and were also decreased in her mother. The response was also decreased against PWM, to about one-sixth of the normal value in the patient and to one-half in her mother. The Con A response was decreased in the sister, while her PHA and PWM responses were normal. In contrast to these findings, the responses against the antigen-specific stimulators, PPD and oidiomycin, were normal in all subjects. Natural killer cell activity against the K-562 cell line was decreased in the patient but normal in her mother and sister. The number of B cells was at the normal limit in all subjects. The amount of E rosette-forming T lymphocytes was normal but the amount of ANAE-positive cells was decreased, especially in the proband (31%). Our results describe a new human immunodeficiency state, probably associated with X-chromosome deletion. We suggest that the short arm of the X-chromosome exerts its effect on regulatory T cells. Whether the humoral defect is connected with suppressor T cells remains to be established.

Adult↗
PubMed1980

Chemotaxis in yersinia arthritis. HLA-B27 positive neutrophils show high stimulated motility in vitro.

Chemotaxis, chemokinesis, and spontaneous locomotion of polymorphonuclear leukocytes (PMNs) of yersinia arthritis (YA) patients and healthy subjects with or without HLA-B27 were studied by agarose assay and membrane filter technique. HLA-B27 positive healthy control subjects and yersinia patients showed significantly higher response to chemotactic stimulus than HLA-B27 negative controls. Consequently, the high response was associated with HLA-B27 irrespective of YA. The high responder PMNs may contribute to the more severe inflammatory symptoms in YA patients with HLA-B27.

Acute Disease↗
PubMed1980

Histocompatibility antigens in familial Creutzfeldt-Jakob disease.

Histocompatibility antigens were defined in 25 members of a Finnish family in which Creutzfeldt-Jakob disease (CJD) was diagnosed clinically in 4 cases and neuropathologically in 3 cases; 3 further cases had a history of presenile dementia. 2 HLA haplotypes were defined in 3 patients and deduced in a further 3 cases; only one haplotype could be deduced in 2 patients. CJD was not linked with a single haplotype, but at least 7 out of 8 patients with this disease apparently shared the HLA antigens A28 and B8.

Creutzfeldt-Jakob Syndrome↗
PubMed1980

Persistence of IgM, IgG, and IgA antibodies to Yersinia in yersinia arthritis.

IgA antibodies to Yersinia enterocolitica were demonstrated in the sera of 13 patients with severe versinia arthritis who were studied six to eight months after an acute infection with Yersinia. Four of the patients were monitored for two to three years, and they continued to demonstrate these antibodies. Only one of 12 control patients (individuals with yersinia infection without arthritis) had IgA antibodies specific to Yersinia six to eight months after the acute infection. The persistence of IgG antibodies was also in direct correlation to the occurrence of arthritis, but not as clearly as was the persistence of IgA antibodies. Antibodies of the IgM class persisted in most cases for only one to three months and always disappeared during the first six months after the onset of the infection. Thus, the demonstration of IgA antibodies to Yersinia is important in the diagnosis of yersinia arthritis, and the occurrence of IgM antibodies indicates a recently acquired infection with Yersinia.

Adolescent↗
PubMed1980

Psoriasis and HLA-Cw6.

The prevalence of histocompatibility antigen HLA-Cw6 was 72.7% in twenty-two patients with the guttate form and 45.9% in thirty-seven patients with the vulgaris form of psoriasis; the difference between these figures and the prevalence (7.4%) in 462 healthy blood donors in Finland is highly significant. The previously observed excess of several HLA-B locus genes might be secondary to their close linkage with the Cw6 gene. Hereditary factors appear more important in the guttate than in the vulgaris form of psoriasis.

Finland↗
PubMed1980

HLA genetics of insulin-dependent juvenile-onset diabetes mellitus in northern Finland.

HLA--A, B and C antigens were determined from 63 cases of juvenile-onset, insulin-dependent diabetes mellitus (IDDM) in northern Finland. There was a very strong association between IDDM and HLA--B8 and B15 antigens in this area where the incidence of IDDM is also high. Relative risks for B8 and B15 were 4.8 and 3.8, respectively. In a small group of subjects typed for HLA--D antigens Dw3 and Dw4 appeared to be stronger risk factors than associated B antigens, whereas Dw2 was almost totally absent in the patients. The effect of combinations of B8 and B15 antigens in unrelated patients and in diabetic families was analyzed. B8, B15 was found in 11 out of 63 unrelated diabetics; however, this did not differ significantly from the expected value. In diabetic families there was no increased rate of intra-HLA recombinations.

Diabetes Mellitus, Type 1↗
PubMed1980

Yersinia arthritis in children.

Over a 10-year period 37 children were hospitalized with infections of Yersinia enterocolitica III, IX or Yersinia pseudotuberculosis IA. The diagnosis was based on elevated antibody titres against these micro-organisms. Thirteen of the children had reactive arthritis caused by Yersinia. The duration of arthritis in the primary phase varied between 3 and 22 months, the average being 6.5 months. Two patients developed persistent arthritis. chemical synovectomy with osmic acid was performed in 3 children because of persistent synovitis in the knee joint. All 3 became asymptomatic after this therapy. The follow-up study of the patients with arthritis was performed after an average period of 4 years 7 months. The histocompatibility antigen HLA-B27 was found in 11 of the 13 children. This group included both patients with chronic arthritis and the 3 synovectomized children. Reactive arthritis in this material was a common, serious complication in an otherwise benign infection.

Adolescent↗
PubMed1979

Immunological and genetic markers in a family with Hashimoto's disease.

A family with Hashimoto's disease in three generations is described. Seven persons (all female) had Hashimoto's disease was the only thyroid disorder occurring in this family; no other autoimmune disease was observed. Circulating thyroid antibodies were detected in all seven subjects with overt thyroiditis in this family. Thyroid antibodies were also detected in low titres in about half of the healthy relatives. Evidence of thyroid antigen-directed cell-mediated immunity was demonstrated using the leucocyte migration inhibition test in four out of seven subejcts with thyroiditis and also in about half of the relatives without clinical thyroid disease. The relative number of thyroglobulin-binding circulating lymphocytes was elevated in six subjects with Hashimoto's disease. Again, the percentage of such cells was also increased in about half of the 'healthy' relatives. Thyroid-stimulating immunoglobulins were detected by the radioreceptor assay in three of the seven subjects with Hashimoto's disease and in four out of thirteen relatives without overt signs of thyroiditis. In conclusion, all subjects with Hashimoto's disease carried immunological markers of autoimmune thyroid disease in the circulation. In addition, most of the 'healthy' relatives were also positive for some or all of the markers sought in this study. The expression of these markers thus seems to be variable. No clear-cut conclusion could be drawn regarding the inheritance of these markers. HLA genotypes were assayed for thirty-five specificities of A, B and C loci and five of the D loci. There was no correlation between any individual antigen or HLA haplotype and overt Hashimoto's disease in this family.

Adolescent↗