Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0409974 (lupus)
 22,386 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Mice of the genetically different BXSB and MRL/lpr strains develop murine lupus spontaneously at about three months of age. Polyclonal B-cell activation is thought to play a major role in the development of the syndrome in each strains, but the immunological events which lead to this activation are not known. We therefore examined the immune characteristics of mice aged 10-16 weeks, at the onset of the disease. We found consistent abnormalities in the percentages of lymphocyte sub-populations in both male BXSB, and male and female MRL/lpr mice. In particular, the ratio of helper to suppressor/cytotoxic T cells was found to be significantly lower in male BXSB, and in male and female MRL/lpr mice than in normal, control, DBA2 mice. Significant increases in serum IgG and IgA concentrations, indicative of polyclonal B cell activation, were present in each strain. The histological appearance of the lymphoid organs and the functional responses to mitogen stimulation were, however, distinctly different. We conclude that defective immunoregulation is likely to be significant in the initiation of murine lupus, since it is detectable at the onset of disease in two genetically distinct strains. It may be associated, however, with different immunological phenomena in strains of different genetic backgrounds.
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PMID:A search for common immunological abnormalities at the onset of murine lupus in two genetically different strains. 257 49

Using the ELISA technique we have tested anti-nDNA antibodies in 79 patients affected with Lupus Erythematosus. The same patients have previously been tested for anti-cardiolipin antibodies. According to the literature, cross inhibition ELISA tests show no cross reactions between these two auto-antibodies families. Patients with highest anti-nDNA antibodies show a production of polyclonal (IgG, IgM, IgA) antinuclear antibodies responsible for a homogeneous pattern detected by indirect immunofluorescence.
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PMID:[Anti-nDNA antibodies in lupus erythematosus]. 263 Apr 30

A female newborn of SLE mother developed transient typical discoid-like lupus skin lesions over her face soon after birth and had severe relapse with generalized spreading following an episode of upper respiratory tract infection at 50 days of age. Blood picture showed anemia, transient thrombocytopenia and high ESR. Cardiac echo disclosed small ASD with minimal TR. Both EKG and 24 hrs EKG monitor presented normal findings. Serological studies at the early relapse stage of this disease showed increased serum ANA, IgA and IgM level with normal IgG and decrease of C3 and C4. Both Ro(SSA) and La(SSB) antibody systems were positive in mother but only positive for La(SSB) antibody system in this baby. The alpha-anticardiolipin antibody was negative. We suggest that the Ro(SSA) and/or La(SSB) antibody systems may play a role in the pathogenesis of neonatal lupus erythematosus.
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PMID:Neonatal lupus erythematosus: report of one case. 263 97

A description is offered of a toxic and febrile young patient with diarrheic syndrome of twenty days evolution secondary to extranodal lymphoma of cecal location. A concomitant immunity deficit--selective IgA deficit--appeared in the form of chronic mucocutaneous candidiasis and discoid lupus, and in the absence of familial antecedents. As a result of this case study, an association of gastrointestinal lymphoma of unusual location with an underlying immune disorder, the literature was reviewed.
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PMID:[Lymphoma of the cecum]. 266 Feb 7

A total of 411 children, aged from 0.3 to 18 years, suffering from glomerular diseases, were studied by renal biopsy between 1976 and 1985. The clinical presentation included nephrotic syndrome (79% of cases), renal failure (43%), and arterial hypertension (38%). In all, 177 cases presented with primary nephrotic syndrome; all had complicated courses and most were either corticosteroid-dependent or -resistant. Only 26.6% had minimal change disease on renal biopsy; 56.5% had focal-segmental sclerosis; and immunofluorescent deposits were observed in half of the group. Acute poststreptococcal (36 cases), mesangiocapillary (80 cases), and lupus (34 cases) glomerulonephritis occurred frequently; IgA glomerulopathy (10 cases) and haemolytic uraemic syndrome (6 cases) were uncommon. Glomerular crescents were observed in 71 cases. These observations illustrate the types of glomerular diseases seen in Iranian children.
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PMID:Glomerular diseases in children. "The Iranian experience". 270 71

The ddY mice are known to develop spontaneous glomerulonephritis resembling human IgA nephritis after 40 weeks of age. A sharp rise of circulating polyclonal IgG and IgA is also observed at this stage. Since these overproduced immunoglobulins seem to be related to the development of murine glomerulopathy, antigen-antibody interactions between renal tissue proteins and serum immunoglobulins were analyzed by Western blotting in ddY mice before and after 40 weeks of age. Serum IgG at 50 weeks reacted with an 18-kDa renal tissue protein which was identified as histone H3, as well as with histone H1. Renal histones were extracted along with IgG from the murine kidney at 50 weeks in a high salt soluble fraction. Serial studies of anti-histone antibodies by enzyme-linked immunosorbent assay showed that IgG class antibodies markedly increased after 40 weeks of age. IgA class antibodies mildly increased after 56 weeks of age. Anti-DNA antibodies were not detected. These results demonstrate that ddY mice also develop mainly IgG class and partly IgA class anti-histone autoantibody after 40 weeks of age, and that histone-anti-histone complexes may contribute to the development of murine glomerulopathy. Although anti-histone antibodies have been reported in lupus mice, ddY mice differ from these mice in that no anti-DNA antibodies develop.
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PMID:Anti-histone autoantibodies in ddY mice, an animal model for spontaneous IgA nephritis. 273 9

The sera of 49 healthy IgA-deficient (SIgAD) subjects were evaluated for the presence of autoantibodies directed against 10 different nuclear and cytoskeletal antigens, as well as for the presence of the common lupus anti-DNA idiotype (16/6 Id). Twenty-nine sera were from IgG subclass-deficient subjects (4 = IgG2, 25 = IgG3), and 25 from normal healthy subjects, used as controls. The incidence of antinuclear but not anti-cytoskeletal antibodies were found to be significantly greater in the SIgAD group, as compared to the IgG-deficient subjects and the normal controls. Overall, 39% of SIgAD sera demonstrated polyreactivity, namely reactivity against more than one nuclear antigen. The incidence of specific antibody detection ranged from 37% against cardiolipin to 12% against RNP in the IgA-deficient group, albeit not with statistical significance in all cases when compared to the control group. Isotype evaluation of the antinuclear and related antibodies in the SIgAD group showed a greater tendency towards IgG. This increased incidence of autoantibody production in SIgAD may preceed the development of an overt autoimmune disease in the future.
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PMID:Antinuclear and related autoantibodies in sera of healthy subjects with IgA deficiency. 278 46

We report the first case of constrictive pericarditis in a woman with systemic lupus erythematosus (SLE). Immunopathologic studies demonstrated IgG, IgA, IgM and C3 distributed throughout her pericardium including vessel walls. Cardiospecific antimyosin, antisarcolemmal and antipericardial antibodies were detected in serum obtained prior to surgery or steroid therapy. Antibodies disappeared and creatine phosphokinase decreased to normal concentrations during prednisone therapy. Antimyosin antibodies were not detected in 11 sera or in one pericardial fluid obtained from patients with lupus with active pericarditis unaccompanied by constriction. Evaluation of antimyosin antibodies in other patients with this rare manifestation of SLE is warranted to further assess their pathologic significance.
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PMID:Antimyosin antibodies and constrictive pericarditis in lupus erythematosus. 305 97

A 12.5 year old girl was admitted to hospital with the typical signs of hemolytic uremic syndrome, and systemic lupus erythematodes as well. On the basis of clinical, blood chemistry, and histological findings we assumed an hemolysis-induced form of hemolytic-uremic syndrome as the most likely pathogenic mechanism. The child also suffered from congenital IgA-deficiency and produced an inhibitor against coagulation factor VIII. Congenital IgA-deficiency, systemic lupus erythematodes, inhibitor-induced hemophilia and hemolytic uremic syndrome are suggested to form a pathogenic sequence.
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PMID:[Hemolytic uremic syndrome following juvenile lupus erythematodes disseminatus]. 309 24

Three women with antiphospholipid antibodies and a postpartum syndrome of pleuropulmonary disease, fever, and cardiac manifestations are presented. Each patient had either lupus anticoagulant or anticardiolipin antibodies or both, but did not have antinuclear antibodies or fulfill the criteria for the diagnosis of systemic lupus erythematosus. No infection or embolus was detected that could explain the pulmonary findings. All three patients had electrocardiographic abnormalities, and one patient developed a cardiomyopathy with extensive immunoglobulin G (IgG), IgM, IgA, and C3 deposition in the myocardium. In addition to the reported association between antiphospholipid antibodies and fetal loss, fetal growth retardation, and preeclampsia, we suggest that patients with antiphospholipid antibodies are at risk for a previously unreported and serious autoimmune postpartum syndrome.
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PMID:A new postpartum syndrome associated with antiphospholipid antibodies. 310 Oct 15


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