Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0024141 (systemic lupus erythematosus)
 44,322 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Eighty-eight untreated systemic lupus erythematosus patients collected from rheumatology services were studied for the presence of discoid, molar and vasculitic lesions and photosensitivity. Their sera were examined for antibodies to native deoxyribonucleic acid (nDNA), nuclear ribonuclear protein (nRNP), the non-nucleic acid nuclear macromolecule Sm, the nuclear and cytoplasmic macromolecules La(SSB) and the predominantly cytoplasmic macromolecule Ro(SSA). These studies demonstrated that 42% of the lupus patients possessed nDNA; 36% nRNP; 24% Ro(SSA) and 9% anti La(SSB) antibodies. Six patients failed to demonstrate significant antinuclear antibody titers (mouse liver substrate), and 4 of these possessed anti Ro(SSA) antibodies. Correlation to the cutaneous lesions among this lupus population possessing various serum antibodies revealed a trend toward photosensitivity and molar dermatitis in the Ro(SSA), La(SSB), Ro/la and the ANA negative, ANA negative/Ro positive groups of lupus patients.
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PMID:Serum autoantibodies in systemic lupus erythematosus and correlation with cutaneous features. 698 4

Detection of anticytoplasmic antibodies of Ro specificity has been a valuable aid in identification of a subpopulation of patients with systemic lupus erythematosus (SLE). Characteristics of this group of patients have been dermatosis, photosensitivity, hypergammaglobulinemia, positive rheumatoid factor, and usually absence of fluorescent antinuclear antibodies done by conventional methods. The findings of these three patients add further evidence that, in addition to presence of other manifestations of SLE, the dominant feature is a cutaneous eruption. This became marked and disseminated during exacerbations usually following sun exposure. Such features distinguish these patients from those with discoid lupus erythematosus (DLE) or classical SLE, although at times features of either may be present. Concomitantly, there were selective histopathologic and immunopathologic changes. An unusual finding was a variability in lupus band test dependent upon the state of the disease. Likewise, serologic reactions exhibited a wide range of variability. The results suggest three phases of the disease: chronic active, acute, and treated inactive. Despite acute episodes, including development of nephrotic syndrome in one patient, there was satisfactory response to moderately high doses of corticosteroids and antimalarials.
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PMID:Systemic lupus erythematosus with anti-Ro antibodies: clinical, histologic and immunologic findings. Report of three cases. 704 73

The authors report two cases with both true vitiligo and cutaneous lupus erythematosus (LE). The latter was found only on the vitiliginous areas on both exposed and non-exposed skin. A study of the literature shows that this association is very rare and, like the association between vitiligo and antinuclear antibodies, not statistically significant. It is therefore not possible to explain the pathogenesis of this association by a common autoimmune theory, although vitiligo is well known to coexist with other autoimmune disorders and although antimelanocyte antibodies are exceptionally found in certain cases of vitiligo. The coexistence of lupus erythematosus and vitiligo must be clearly distinguished from post lupus depigmentation which is much more common. In the latter there is clinically an irregular hypomelanosis and an atrophic epidermis and, histologically, there is a pigmentary incontinence with an increased number of melanocytes. Even if it is fortuitous, the appearance of LE lesions on light exposed vitiliginous areas may be explained by the common photosensitivity of these two disorders. However, this superimposition does not explain the common points between these two diseases nor the localization on non-light exposed skin. The localizing role of vitiligo in these exceptional cases could represent a more complex disorder of the dermo-epidermal junction. This disorder could affect more than the melanocytic system and subsequently favour the occurrence of the LE. Nevertheless, the mechanism of this coexistence still remains unknown.
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PMID:[Association of lupus erythematosus and vitiligo (author's transl)]. 723 2

We observed two sisters with lupus-like syndrome with homozygous C3 deficiencies. A 19-year-old woman and her 15-year-old sister developed malar rash, arthralgia, and photosensitivity, but antinuclear antibodies and LE cell preparations were negative. The older sister experienced recurrent bronchitis in her childhood, but the younger sister had no recurrent infections. Serum C3 was not detected immunochemically in either sister, and total complement activity and C3 hemolytic activity were extremely low.
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PMID:Hereditary deficiency of the third component of complement in two sisters with systemic lupus erythematosus-like symptoms. 730 27

The American Rheumatism Association (ARA) clinical criteria have been tested in systemic lupus erythematosus (SLE), progressive systemic sclerosis, polyarteritis nodosa and polymyositis/dermatomyositis. Hospital admissions from a defined population over the same period were studied. Increased weighting of the scores for the features showing the greatest specificity is suggested. These features are discoid lupus, alopecia, photosensitivity, LE cells and/or antinuclear antibody (ANA) and oral ulcers. Inclusion of histological evidence increased the sensitivity of the SLE scores.
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PMID:Testing clinical criteria for systemic lupus erythematosus in other connective tissue disorders. 734 70

A study was done that involved 46 patients with high-titer serum antibody to ribonucleoprotein (RNP). Common cutaneous manifestations included swollen hands or sclerodactyly (50 percent), cutaneous lupus erythematosus (48 percent), periungual telangiectasia (46 percent), alopecia (46 percent), dyspigmentation (28 percent), photosensitivity (28 percent) and vasculitis (22 percent). Frequent systemic characteristics included Raynaud phenomenon (93 percent), arthritis or arthralgia (91 percent), adenopathy (43 percent), vascular headaches (35 percent), serositis (35 percent), hoarseness (28 percent), myositis (26 percent), sicca syndrome (24 percent), renal disease (17 percent) and central nervous system disease (9 percent). Associated laboratory findings included antinuclear antibodies (100 percent), epidermal nuclear lgG deposition (91 percent), hypergammaglobulinemia (78 percent), esophageal dysmotility (61 percent), abnormal pulmonary function (59 percent), rheumatoid factor (57 percent), lupus erythematosus cells (37 percent), positive lupus band test (34 percent), hypocomplementemia (28 percent) and elevated anti-nDNA (21 percent). It appears that patients with high-titer anti-RNP (without appreciable amounts of "anti-Sm") have a high prevalence of Raynaud phenomenon and a low prevalence of progressive renal insufficiency and severe central nervous system disease.
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PMID:Mixed connective tissue disease. 738 33

There is evidence suggesting that clinical manifestations and severity in systemic lupus erythematosus (SLE) are associated with age, sex and ethnicity. The influence of genetic factors, particularly HLA antigens, on disease expression is revealed by the diversity of clinical conditions in patients from different ethnic groups. The aim of this work was to analyze the impact of demographic factors on SLE expression in the Spanish population. Therefore, a retrospective analysis was undertaken of clinical records of 307 patients diagnosed in three Rheumatology Services, with a mean follow-up of 79 months. The distribution of clinical manifestations according to age and sex was studied and compared with those observed in other ethnic groups. The results show the influence of sex and age on our patient population. Thus, female had a higher frequency of malar rash, photosensitivity and lymphopenia. Males had a higher CNS and renal involvement. Patients under 15 years had a higher involvement of CNS and kidney. Patients under 15 years had a higher frequency of nephropathy, hematological, cutaneous and CNS changes. Patients older than 50 had a higher frequency of pleuropericarditis, but without renal involvement. Our ethnic group expressed a disease with a severity similar to that observed in north-european caucasians, higher than in north-american caucasians and lower than in south-american caucasians, asiatic and africans. In conclusion, patients with SLE from the south-european ethnic groups express a clinical picture with characteristics and severity similar to those observed in europeans from other latitudes and different from those reported in other ethnic groups.
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PMID:[Clinical and serological manifestations of 307 Spanish patients with systemic lupus erythematosus. Comparison with other ethnic groups]. 756 99

Eighty-seven patients with systemic lupus erythematosus (SLE) were retrospectively studied in King Khalid University Hospital, Riyadh. There were 78 females and 9 males (F:M ratio of 9:1). The mean age (+/- SD) at onset and at diagnosis were 25.3 +/- 10.5 and 28.5 +/- 10.9 years, respectively, with peak incidence in the 20-30 year age group. Musculoskeletal (91%), constitutional (76%), cutaneous (72%) and renal (63%) manifestations occurred most frequently, while neuropsychiatric manifestations (26%), photosensitivity (26%) and oral ulcers (16%) were relatively less frequent. The most common laboratory abnormalities included ANA (98%), anti-DNA (93%), LE cells (66%) and lymphopenia (70%). There were seven deaths during the study period and most of them were related to renal failure and complications from infections. Overall, the pattern of SLE observed in the series was comparable to that observed in other series among Caucasians.
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PMID:Systemic lupus erythematosus in Saudi patients. 764 13

Chloroquine can prevent photosensitivity reactions, but its mechanism of action is poorly understood. To investigate if the drug may interfere with inflammatory or immunological mechanisms of the UV-induced erythema of photosensitive patients, we studied the localization of chloroquine in the skin and its effect on the epidermal/dermal expression of IL-1, TNF-alpha, IL-6 and ICAM-1 and the occurrence of different lymphoid cells in normal skin and UVB-induced erythema in 8 patients with photosensitive discoid and systemic lupus erythematosus and 4 patients with polymorphic light eruption (PMLE), before and during chloroquine treatment. Using a specific monoclonal antibody against chloroquine, we found a strong granular staining pattern of mainly keratinocytes in all biopsy specimens from normal and erythematous skin during chloroquine treatment. In non-irradiated skin, T lymphocytes, macrophages and HLA-DR expressing cells were sparsely distributed within the dermis in similar amounts before and during chloroquine treatment. In UVB-induced erythema an increase in the number of these cells, mainly located in the dermal perivascular area, was seen before medication. During chloroquine treatment such cellular infiltration was reduced. ICAM-1 expression was detected on the endothelium of dermal vessels but not on keratinocytes. The accumulation of chloroquine in the epidermis and the decreased cellular infiltration in erythematous skin during chloroquine treatment indicate a local anti-inflammatory effect. This effect may be due to either unspecific UV-protective properties of the drug or to some specific downregulating action by chloroquine on keratinocyte function.
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PMID:In situ localization of chloroquine and immunohistological studies in UVB-irradiated skin of photosensitive patients. 765 84

This study is a cross-sectional analysis of the differences between SLE outpatients seen in Rheumatology departments at University centres in England, Brazil and Sweden, using a standard protocol. The demographic characteristics, extent and activity of disease of 209 patients with SLE were studied; 112 patients were seen in England, 33 in Brazil and 64 in Sweden. The median age of disease onset of Brazilian and English patients was 25 years and of Swedish patients 31.5 years. Disease activity was measured by the BILAG index. In most systems Brazilian patients experienced more activity than English patients and English patients more activity than Swedish patients. Non-Caucasians experienced more active disease than Caucasians. No sex or occupational differences were observed in disease activity. English patients were the most likely to have experienced photosensitivity, oral ulcers and haematological disorders, Brazilian patients renal disorders and Swedish patients discoid rashes. Brazilian patients were the most likely to be prescribed only one drug for treatment of SLE and to be taking steroids and the highest dose of steroids, in contrast to the European patients who were often prescribed steroids and an antimalarial agent or azathioprine. The results of this cross-sectional assessment of disease activity using a standardized instrument indicate that there are real differences in the extent and degree of activity of SLE in different national groups. This reflects a combination of genetic, environmental and social influences on disease expression and has implications for treatment and monitoring of SLE patients.
Lupus 1994 Dec
PMID:Cross-sectional analysis of the differences between patients with systemic lupus erythematosus in England, Brazil and Sweden. 770 8


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