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Query: UMLS:C0011633 (dermatomyositis)
 4,181 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Chromosome aberrations such as gaps and breaks of one or both chromatids, acentric fragments, dicentrics, ring chromosomes and other abnormal chromosomes are observed in lymphocyte and fibroblast cultures as well as in direct bone marrow preparations from patients with systemic sclerosis. A serum factor producing chromosome breaks in mitoses from healthy donors was observed in 37 of 42 scleroderma patients. The biochemical nature of this breakage factor is still undefined. Increased breakage is also noted in a high percentage of healthy family members of scleroderma patients. It is also a common feature of related disorders such as lupus erythematosus, dermatomyositis, periarteritis nodosa and rheumatoid arthritis. An increase in chromosome breaks and rearrangements is also present in NZB mice developing spontaneously an autoimmune disorder that has been extensively studied by workers interested in lupus erythematosus. The similarity of the cytogenetic findings provides the opportunity to use these mice as an experimental model to investigate relationships between immunological perturbations and chromosomal aberrations.
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PMID:Chromosomal breakage in systemic sclerosis and related disorders. 1 37

On the basis of inpatient and outpatient observations of the longterm course in 44 patients with erythematodes disseminatus, 8 with periarteritis nodosa, 4 with Wegener's granulomatosis, 5 with dermatomyositis, 3 with giant cell arteritis and 9 with scleroderma the pathogenesis, differential diagnosis and therapy of these diseases is discussed. The differential diagnosis and longterm supervision being dealt with particularly thoroughly. Early recognition of the disease episodes and appropriate therapeutic action in the shape of increased doses of prednisolone are important. Additional cytostatics were given if the kidney was involved.
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PMID:[Hyperergic collagenoses. Clinical aspects, differential diagnosis and therapy (author's transl)]. 2 36

Myocardial involvement was indicated by isolated findings (especially on the ECG) without corresponding functional disorders in one third of cases of dermatomyositis. Rapidly fatal heart failure occurred rarely in this disease, and was noteworthy for a QS complex in the central precordial leads, and for the presence of intracardiac thromboses which could give rise to emboli. Terminal cardiac failure was the rule in cases of periarteritis nodosa, which is a much rarer disease; this occurrence was secondary to hypertension. The most characteristic lesions were nodular coronary arteritis and disseminated myocarditis due to the arteriolar lesions.
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PMID:[The myocardiopathies of dermatomyositis and periarteritis nodosa]. 2 56

ECG changes in 49 patients with rheumatoid arthritis, 18 with ankylosing spondylitis, 47 with systemic lupus erythematosus, 17 with dermatomyositis, 21 with scleroderma and 7 with polyarteritis nodosa were compared with ECG changes in 106 control subjects. The classification of ECG findings was based mainly on the Minnesota Code. Compared with control subjects, pathological Q--QS, ST segment and T wave patterns were more common in all patient groups--including dermatomyositis, in which cardiac involvement has rarely been reported. P terminal force (PTF) was higher in the patient group. Conduction defects were probably more common in connective tissue diseases, whereas differences in ectopic beats, arrhythmias, QRS duration and QRS axis and R wave amplitude were not significant. The only significant difference between the steroid-treated patients and those without such treatment was the higher frequency of ST changes in the steroid-treated group. The results imply that heart affection is common in all connective tissue diseases. The several mechanisms underlying the cardiac involvement are reflected in many ways in the electrocardiograms of these patients, including an increased frequency of ECG changes mimicking those met in coronary heart disease.
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PMID:Electrocardiographic findings in patients with connective tissue disease. 3 14

Diseases of autoaggression can be produced if immunotolerance to endogenous tissue is lost. Such diseases become manifest in the pulmonary and pleura regions mainly within the framework of systemic diseases of the connective tissue (collagenoses) and of the vessels (angiitides). Lupus erythematodes disseminatus belongs to the first group which also includes rheumatoid arthritis, sclerodermia, and dermatomyositis, whereas panarteritis nodosa belongs to the second group, which comprises among others arteritis of the arteria pulmonalis, Wegener's granulomatosis, Goodpasture's syndrome and Ceelen's disease. Pleuropulmonary involvement is frequent in these systemic diseases; it is in fact the principal sign in Goodpasture's syndrome and in Ceelen's disease.
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PMID:[Autoimmune diseases in the lungs and pleura (author's transl)]. 3 94

Rheumatoid arthritis is a multisystem disease, with many clinical forms bearing close resemblance to systemic lupus erythematosus, dermatomyositis or polyarteritis nodosa. Although the involvement of the integument is not as disabiling as the joint disease, the extent of disability may be of sufficient magnitude to necessitate therapeutic intervention. Two patients are presented whose skin involvement was suggestive of cutaneous angiitis and who responded dramatically to treatment using sulfasalazine.
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PMID:Cutaneous rheumatoid vasculitis. 3 16

Antibody activity against mumps, measles, polio, and rubella viruses was determined in patients with juvenile rheumatoid arthritis (J.R.A.), rubella-vaccine associated arthritis, adult rheumatoid arthritis, other chronic systemic disorders (e.g., systemic lupus and dermatomyositis), and in a matched population of normal, non-rheumatoid (control) children. The antibody levels against mumps, measles, and poliovirus were similar in all patients. Rubella-antibody levels in rheumatoid arthritis and other systemic disorders were similar to those observed in controls. The mean rubella-antibody levels in rubella-vaccine arthritis were 4 times higher than in controls. The IgM and IgG rubella-antibody levels in J.R.A. were found to be 4-6 times higher when compared to titres observed in the controls. Highest antibody levels were seen in younger children with J.R.A. Detection of rubella-virus antigen was attempted by immunofluorescence in the sediment smears of synovial fluid of patients with J.R.A., adult rheumatoid arthritis, and other non-rheumatoid joint diseases. Specific staining for rubella virus antigen was observed in the synovial fluid of 33 percent of patients with J.R.A. No antigen was detected in the synovial fluid from other patients. These observations suggest a possible role of rubella-virus infection in J.R.A.
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PMID:Rubella-virus infection in juvenile rheumatoid arthritis. 4 75

Described here is a 59 year old man with dermatomyositis and hypogammaglobulinemia. His muscle power improved after corticosteroid therapy, but extensive amyloidosis and repeated infections appeared. Bone marrow morphology suggested multiple myeloma, but treatment with cytotoxic drugs had no beneficial effect on the amyloidosis. Because of rapid progression of the amyloidosis and further infections, cytotoxic drug therapy was stopped, corticosteroid dosage was decreased, and supplementary immunoglobulin therapy was instituted. The infections occurred less frequently and the amyloidosis appeared to regress. This case suggests that immunosuppressive therapy may exacerbate amyloidosis. The literature is reviewed, and the possible role of humoral immunodeficiency in the pathogenesis of amyloidosis is discussed. It is suggested that supplementary immunoglobulin may be beneficial in amyloidosis.
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PMID:Amyloidosis associated with dermatomyositis and features of multiple myeloma. The progression of amyloidosis associated with corticosteroid and cytotoxic drug therapy. 5 87

Samples of renal tissue from 373 patients were examined for the presence of immunoglobulin E (IgE) by immunofluorescent techniques. Only trace to ++ amounts ( on a scale of ++++) were found in 20 patients: 4/9 with post-streptococcal acute glomerulonephritis (GN), 5/30 with GN associated with systemic lupus erythematosus, 3/20 with membranous GN, 1/4 with Goodpasture's syndrome, 2/18 with recurrent microhematuria and focal GN, 1/5 with hemolytic anemia and uremia, 3/73 with renal homografts, and 1/5 with dermatomyositis. No IgE was found in 18 patients with lipoid nephrosis, 8 of whom were being treated with prednisone, nor in 5 patients with focal glomerular sclerosis and the nephrotic syndrome. Serum IgE was measured in 9 of the 20 patients with glomerular deposits of this globulin. With one exception, levels of IgE were within the range generally considered to be normal. However, they were greater than the mean of this range in all but two and near the highest limits of normal in most. Neither the amounts of serum IgE nor the degree of proteinuria could be related to the intensity of stain for IgE in the glomeruli of these patients.
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PMID:Immunoglobulin E in renal disease. 5 86

19 biopsies of polymyositis patients were compared with 19 matched controls. The presence of smaller fibres in the periphery of the fascicles has been analyzed quantitatively using a perifascicular atrophy factor. The thinner fibres are multiplied by a factor from 1-4, considering their significance for the diagnosis of fibre atrophy. The value obtained with this method from centrally located fibres as related to the value from peripherally located ones is called the perifascicular atrophy factor. If this is less than -300 a myopathy of the group of the polymyositis/dermatomyositis can be assumed. 47 per cent of dermatomyositis biopsies and none of the controls were below this range
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PMID:The perifascicular atrophy factor. An aid in the histological diagnosis of polymyositis. 6 96


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