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)

This study involved 10 patients having, in direct immunofluorescence, with covered healthy skin, a speckled IgG (+/-IgM) staining of the epidermal nuclei. The chief clinical signs seen and their respective percentages were: Raynaud's syndrome (80%), arthralgia (80%), diffuse or localised alopoecia (60%), muscular disease (40%), swollen fingers (40%), sclerodactylie (20%), cutaneous sclerosis extending beyond the extremities (30%), cutaneous signs of lupus erythematosus (30%), renal involvement (10%). In nine cases out of ten there were circulating anti-ENA antibodies at high levels, divided into anti-RNP antibodies (7/10), anti-Sm antibodies (1/10) and anti-RNP and anti-Sm antibodies (1/10). Diagnoses were divided into: lupus erythematosus (3/10), systemic scleroderma (3/10), Sharp's mixed connective tissue disease (MCTD) (3/10) and non-classified connective tissue disease (1/10). The combination of speckled staining of epidermal nuclei and circulating anti-ENA antibodies cannot be considered to be specific of any particular type of connective tissue disease and the prognosis of the disease does not appear to differ from that of the usual prognosis of connective tissue disease with anti-ENA antibodies.
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PMID:[Significance of speckled staining of epidermal nuclei in direct immunofluorescence. 10 cases (author's transl)]. 35 22

Patients with a history of three or more fetal losses before a gestational age of 20 weeks were examined. Only patients with normal chromosomal, hormonal and anatomic findings were included in this study. These patients were tested for the antinuclear antibody, the C3 and C4 levels, anti-ENA [Ro(SSA), La(SSB), SM, RNP, scl-70], anti-single-stranded DNA and anti-double-stranded DNA, lupus anticoagulant, anticardiolipin and antiphosphotidylserine. All of these patients were free of any symptoms, except for the repeated abortions. The results showed that 10 out of 213 (4.7%) patients with unexplained recurrent spontaneous abortions had abnormal serologic tests, and 28% of the abortions (nine out of 32 abortions) occurred during the second trimester. With treatment of low-dose aspirin alone, or in combination with prednisolone, two out of 11 pregnancies in these 10 patients resulted in repeated abortions (18%), which was significantly lower than their previous abortion rate where 32 out of 33 pregnancies resulted in abortions (97%). Four babies (three term and one premature) were delivered without any abnormalities and the other five pregnancies are beyond the 28th week of gestation and are progressing smoothly. This study revealed that subclinical autoimmune disorders may play a role in recurrent spontaneous abortions and adequate treatment can improve the pregnancy outcome.
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PMID:Treatment and outcome of unexplained recurrent spontaneous abortions in subclinical autoimmune disorders. 135 27

Antibodies against ENA (Extractable Nuclear Antigens), SSA/Ro and SSB/La were investigated in parallel in the serum and the immune complex precipitates of 41 patients with autoimmune disease (10 systemic lupus erythematosus, 23 discoid lupus erythematosus, 3 subacute cutaneous lupus erythematosus, and 5 progressive systemic sclerosis). It was demonstrated that in some cases the autoantibody spectrum of the serum did not coincide with that of the immune complex precipitate. In the majority of patients the protein content of isolated immune complexes was increased and the increase was attributed to IgG solely. In some patients antibodies appeared not only in the serum but also in immune complex, even in 4 patients (2 systemic lupus erythematosus, 1 subacute cutaneous lupus erythematosus, and 1 progressive systemic sclerosis) antibodies were detected only in the immune complex precipitate.
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PMID:[Detection of circulating antibodies in the blood and immune complex precipitates of patients with autoimmune diseases (preliminary report)]. 157 50

We reviewed the initial serological data of 50 patients with biopsy-proven lupus nephritis. As compared with a group of lupus patients without nephritis, patients with nephritis had lower serum complement C3 (p less than 0.05) and C4 (p less than 0.005) levels and higher serum DNA binding activity (p less than 0.001). The frequency of rheumatoid factor, antiphospholipid, anti-ENA, and fluorescent antinuclear antibodies was similar in both groups. We correlated the serological data of the patients with nephritis with the clinical severity of their disease. Using a functional staging system based on the serum albumin and creatinine levels at the time of biopsy, we found that patients with functionally milder disease (proteinuria without nephrotic syndrome or renal failure) had higher C3 (p less than 0.05) and lower DNA binding (p less than 0.005) than patients in the more severe functional classes (nephrotic syndrome with or without renal failure). In contrast, C4 levels were always very low, irrespective of functional severity. We also correlated the serological data with the pathological findings. Patients suffering from diffuse proliferative nephritis had higher DNA binding values than patients with focal proliferative (p less than 0.01) or membranous (p less than 0.001) nephritis. By contrast, complement levels were not correlated with the severity of biopsy changes. Taken together, the data presented here suggest that C3 and DNA binding, but not C4, correlate with the clinical severity of lupus nephritis at presentation whereas DNA binding, but not complement levels, correlates with the severity of pathological changes.
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PMID:Lupus nephritis: the significance of serological tests at the time of biopsy. 193 81

This study presents 8 dogs of German Shepherd breed (6 males, 2 females, 2-5 years of age at onset of the disease) with a lupus like syndrome characterized by febrile polyarthritis, wasting, nephropathy, cutaneous lesions and high positive titres of ANA (antinuclear antibodies) of speckled type. The serum autoantibodies were further characterized by double immunodiffusion against ENA (extractable nuclear antigen), ELISA for Histone antibodies (Histon fraction H-24A and H-3S), indirect IF on rat-liver sections, non treated and RNase/DNase digested sections for DNP/RNP antibodies, and smears of a hemoflagellate C. luciliae for antibodies vs doubbel strained DNA, (dsDNA). Thus, the high ANA titres in these dogs represent varying types of autoantibodies against nucleoproteins of both DNA and RNA nature, associated histone antigens and non-histone antibodies (RNA and Sm) as well. Rheumatoid Factor titres in serum from these dogs were low or negative. Immunoglobulin deposits at dermo-epidermal junctions were demonstrated in some of the dogs with hyperkeratotic skin lesions. High concentration of serum-IgG was a constant finding in combination with anemia and in most cases leukopenia probably related to the chronic inflammatory process in these animals. Autoimmune hemolytic anemia (AIHA) or thrombocytopenia was not detected in these dogs.
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PMID:Serum auto antibodies and clinical/pathological features in German shepherd dogs with a lupuslike syndrome. 195 Aug 49

In order to verify the hypothesis that Italian patients with systemic lupus erythematosus (SLE) may be immunogenetically distinct from SLE patients born in other regions, we investigated the HLA class I and II antigens and their relation with the various autoantibodies characteristic of the disease in an Italian SLE population. Forty-four SLE patients were typed for HLA-A, -B, -C, -DR and -DQ antigens; sera from the same patients were tested for the presence of antibodies to the nuclear or cytoplasmic antigens Ro/SSA, La/SSB, Sm and RNP (ENA). Results of HLA typing showed that the frequencies of DR3 and DQw2 were increased in patients compared with controls. Analysis of the correlations between HLA antigens and anti-ENA antibodies showed that both DQw2 and DR3 were increased in patients with anti-Ro and/or antiLa antibodies, while in patients with anti-Sm and/or antiRNP antibodies the DQw2 and DR4 were found to be increased. Only DQw2 was found to be significantly increased in anti-ENA positive patients. These results might suggest that Italian patients with SLE are, at least in part, different from lupus patients living in other geographical areas and suggest the association of DQw2 with the autoantibody response to ENA in SLE.
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PMID:HLA antigens in Italian patients with systemic lupus erythematosus: evidence for the association of DQw2 with the autoantibody response to extractable nuclear antigens. 195 98

Autoantibodies to the non-histone nucleoprotein antigens SS-A/Ro, SS-B/La, and RNP are highly associated with photosensitive cutaneous lupus erythematosus (LE). In order to better understand the potential mechanisms of ultraviolet (UV) light on photosensitivity in patients with cutaneous LE, we designed immunopathologic in vitro and in vivo experiments to evaluate the effects of UV on the binding of such autoantibodies to the surface of human keratinocytes, one major target of immunologic damage in photosensitive LE. Short-term 2% paraformaldehyde fixation of suspensions of cultured human keratinocytes previously incubated with monospecific antiserum probes enabled the detection of ENA expression on the cell surface by flow-cytometry analysis. UVB light (280-320 nm) induced the binding of monospecific antibody probes for SS-A/Ro and SS-B/La on keratinocytes in a dose-dependent pattern with maximal induction observed at the dose of 200 mJ/cm2 UVB. Binding of SS-A/Ro, SS-B/La, and RNP antibody was augmented strongly, but binding of anti-Sm was very weak. In contrast, UVA (320-400 nm) light had no effect on the induction of binding of these antibody probes. Identical results were seen by standard immunofluorescence techniques. Hydroxyurea-treated keratinocytes showed similar induction of those antigens by UVB irradiation, which suggested that ENA expression on cultured keratinocytes by UVB were cell-cycle independent. Tunicamycin, an inhibitor of glycosylation of proteins, reduced UVB light effect on the SS-A/Ro and SS-B/La antigen's expression. These in vitro FACS analyses revealed that ENA augmentation on the keratinocyte cell surface was dose dependent, UVB dependent, glycosylation dependent, and cell-cycle independent. In vivo ENA augmentation on the keratinocyte surface was examined in suction blister epidermal roofs. Specific antibody probes for SS-A/Ro, SS-B/La, RNP, and Sm bound to human keratinocytes in intact suction blister epidermis following UVL irradiation in vivo. Using three different protocols, we have demonstrated that antibodies to SS-A/Ro, SS-B/La, and U1RNP bind to UVL-irradiated human keratinocytes. We speculate that this antibody binding is an important inducer of antibody dependent keratinocyte damage in photosensitive cutaneous lupus.
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PMID:Binding of antibodies to the extractable nuclear antigens SS-A/Ro and SS-B/La is induced on the surface of human keratinocytes by ultraviolet light (UVL): implications for the pathogenesis of photosensitive cutaneous lupus. 187 59

The Authors studied, from 1986 to 1988, 84 patients (24 men and 60 women, in an age group that went from 13 to 75 years, with an average of 42 years) in whom DLE was diagnosed. In these patients, a direct immunofluorescent assay was carried out on the affected skin, on the non-affected photoexposed skin, and on the non-affected non-photoexposed skin: furthermore, the serum of these patients was tested for the presence of antinuclear antibodies (ANA), antibodies to extractable nuclear antigens (anti-ENA), and antibodies to double-stranded DNA (anti-DNA). In the study, a significant correlation between the presence of ANA and entity of cutaneous involvement at the Lupus Band Test was found. Furthermore, it was noticed that anti-ENA and/or anti-nDNA tend to be present in association to a positive Lupus Band Test in all 3 biopsied tissues.
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PMID:[The Lupus Band Test and serology of lupus erythematosus. Our experience]. 227 48

The antiphospholipid syndrome--the association of venous and/or arterial thromboses, often accompanied by thrombocytopenia in the presence of the antiphospholipid antibodies ("lupus anticoagulant" antibodies to cardiolipin)--is seen mainly in patients with systemic lupus erythematosus (SLE) and the closely related "lupus-like" disease, i.e., lupus patients not conforming to the 1982 revised American Rheumatism Association classification for SLE. It is also seen in a group of patients who do not manifest any of the major clinical or serologic features of SLE, the majority of whom do not appear to progress to classical lupus. A multicenter study of 70 of these patients is documented and their major clinical and serologic characteristics examined: They have been characterized as suffering from a "primary" antiphospholipid syndrome and present typically with a history of deep vein thromboses, often accompanied by pulmonary thromboembolism, which in a few is complicated by thromboembolic pulmonary hypertension, arterial occlusions (most commonly strokes), or fetal loss. The events are often recurrent and may be accompanied by hemocytopenias (thrombocytopenia and less frequently Coombs positivity and/or hemolytic anemia). They are often antinuclear antibody-negative and are always negative for antibodies to dsDNA and to ENA, typical serologic features of SLE. There may be a family history of SLE or a familial clotting tendency in a minority. The group of patients presented appears to be closely related, but distinctly separate from SLE.
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PMID:The "primary" antiphospholipid syndrome: major clinical and serological features. 250 56

A 16-year-old girl meeting the criteria for SLE is described. Salient features of the clinical course included active glomerulonephritis with dense subepithelial deposits on electron microscopy, pulmonary embolism, axillary vein thrombosis, arthritis, serositis and fever. Disease activity correlated with the presence of lupus anticoagulant as measured by VDRL and partial thromboplastin time (PTT). Her serum was consistently negative to ANA, anti-DS-DNA, anti-SS-DNA, ENA, anti-Ro, anti-La, and LE cells for the entire 4-year course. She responded remarkably to prednisone and azathioprine. Reappearance of VDRL and elevated PTT preceded exacerbation of disease activity and served as a serological guide for modifying medical treatment.
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PMID:Antinuclear antibody-negative systemic lupus erythematosus (SLE) and severe renal involvement: close correlation between disease activity and appearance of circulating anticoagulant. 312 93


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