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

The concentration of IgA, IgG, IgM, coeruloplasmin, alpha-2-macroglobulin, beta-1-C-globulin, transferrin as well as of alpha-2-haptoglobin, orosomucoid and haemopexin has been studied in the serum of patients with disseminated lupus erythematosus, chronic progressive polyarthritis and immunopathological syndromes. The concentration of the carbohydrate components bound to serum proteins was also determined. In disseminated lupus erythematosus, the concentration of IgA, IgG, IgM, coeruloplasmin, and hexose, hexosamine and sialic acid bound to proteins, as well as of seromucoid was increased. In chronic progressive polyarthritis the IgA, IgG, IgM, coeruloplasmin, alpha-2-macroglobulin and beta-1-C-globulin concentration and the carbohydrate components bound to serum proteins rose. In immunopathological syndromes, too, the serum IgA, IgG, IgM, coeruloplasmin, and protein-bound hexosamine and sialic acid levels were increased. Under the effect of treatment, the elevated glycoprotein concentrations usually decrease, but the level of carbohydrate components bound to serum proteins hardly changes. The pathogenic and diagnostic significance of serum glycoproteins is discussed.
 ...
PMID:Serum glycoproteins in autoimmune diseases. 7 42

A patient with procainamide lupus erythematosus had a large pericardial effusion. As in other reported cases histology revealed a fibrinous mononuclear pericarditis and the pericardial fluid was a serosanguinous inflammatory exudate with a high LDH level and normal glucose concentration. The ANF and LE cell preparation were positive in the fluid but the C3 complement was normal. The frequency of pericarditis is similar in systemic and drug-induced lupus erythematosus yet low complement levels need not occur. Complement activation may therefore be unnecessary for the development of either type of lupus pericarditis.
 ...
PMID:Procainamide-induced lupus erythematosus: report of a case with a large pericardial effusion and fluid analysis. 52 1

The mechanism of granulocyte depletion in a patient with systemic lupus erythematosus and neutropenia was investigated. Neutrophil kinetic studies showed a shortened intravascular survival (t1/2 of 1.6 hours) in the face of an increased marrow neutrophil pool. IgG bound to the patient's neutrophils, measured by the Fab antiF(ab')2 assay, was nearly three times normal. The IgG neutrophil-binding activity of the patient's serum was elevated in serial samples obtained over two years. In addition, his serum was able to opsonize normal neutrophils for ingestion by other neutrophils as detected by 14C-1-glucose oxidation. Enhanced IgG PMN-binding activity was observed with sucrose density gradient fractions of the patient's serum containing either large complexes (19S or greater in size), intermediate complexes (between 7S and 19S), or monomeric IgG. Only the momomeric IgG fraction from the patient's serum, however, opsonized normal neutrophils for ingestion by other neutrophils. These results support the hypothesis that anti-cell antibodies were responsible for the neutropenia in this patient by opsonizing neutrophils for ingestion by other phagocytic cells.
 ...
PMID:Autoimmune neutropenia in systemic lupus erythematosus. 66 71

Polymorphonuclear (PMN) leucocytes from 4 patients with untreated systemic lupus erythematosus (SLE) showed defective random migration (P less than 0-05) and depressed chemotactic responses to C5a and kallikrein (P less than 0-01) compared to PMN leucocytes from normal subjects, or patients with rheumatoid arthritis (4) or Felty's syndrome (4) when examined at a standardized cell concentration with a micropore filter radioassay but not with a conventional Boyden technique. Normal in vitro enhancement of PMN leucocyte random and chemotactic migration by sodium ascorbate was absent in SLE and Felty's syndrome, but sodium ascorbate gave normal stimulation of hexose monophosphate shunt activity in the PMN leucocytes precluding a defect in ascorbate transport.
 ...
PMID:Defective responsiveness to ascorbic acid of neutrophil random and chemotactic migration in Felty's syndrome and systemic lupus erythematosus. 100 18

Three cases of transverse myelopathy associated with systemic lupus erythematosus were reported, and 23 similar cases previously reported were reviewed. A diagnosis of systemic lupus erythematosus was made in only 60% before the onset of transverse myelopathy. The time of onset of myelopathy was randomly distributed during the disease. The most common presenting neurologic symptom was numbness, or weakness of the legs, or both. A unique association between the acute stage of transverse myelopathy and marked reduction of cerebrospinal fluid glucose concentration was observed. Thirteen patients died, 9 had permanent neurologic deficits, and only 4 recovered nearly normal function. Eight patients had ischemic necrosis of the spinal cord at postmortem examination, and vascular lesions were found in the spinal cord of 3 additional patients. The value of steroid treatment was uncertain. Patients who were started on steroid therapy within 24 hours of the onset of myelopathy may have benefited.
 ...
PMID:Transverse myelopathy in systemic lupus erythematosus. Report of three cases and review of the literature. 120 Apr 94

Proteins from U1 and U2 small nuclear ribonucleoprotein (snRNP) particles, which are common targets of autoantibodies found in some rheumatic diseases, were analysed for the presence of glycans. A glycan detection assay revealed that the U1-specific proteins 68K and A and the U2-specific protein B" are glycosylated. However, none of the Sm proteins, which are common to all the major snRNP particles, showed a detectable level of glycosylation. With the use of specific lectins, an analysis of the particular carbohydrate(s) attached to the U1 snRNP 68K protein demonstrated the presence of at least one N-linked oligosaccharide chain. Lectin detection of galactose, glucose, mannose and N-acetylglucosamine on 68K was confirmed by chemical analysis of the carbohydrates. The glycopeptide nature of these antigens may be important for understanding the role of autoantigens in the pathogenesis of autoimmune disorder.
Lupus 1992 Feb
PMID:Small nuclear ribonucleoprotein particles contain glycoproteins recognized by rheumatic disease-associated autoantibodies. 130 63

Transverse myelopathy is an uncommon complication of systemic lupus erythematosus (SLE). Three patients with SLE are reported who developed transverse myelopathy, including the neuropathological findings in one patient on whom necropsy was performed. Paraparesis was present in all three cases, but definite sensory changes were present in only one patient. In two patients, the CSF findings were remarkable for elevated protein and depressed glucose concentrations. Microscopic examination of the brain demonstrated small, scattered foci of recent necrosis consistent with microinfarctions. Striking abnormalities were found in the spinal cord at all levels, including multiple foci of vacuolar spongy degeneration in the peripheral white matter, as well as ballooning of myelin sheaths, swollen axons, myelin pallor, and loss of glial nuclei. The pathological findings in previously reported cases of SLE-related transverse myelopathy are reviewed, and the possible pathogenesis of the findings in our case are discussed.
 ...
PMID:Lupus-related myelopathy: report of three cases and review of the literature. 140 76

Brain imaging techniques such as MRI and PET have the potential for identifying central nervous system involvement in SLE. They may also help elucidate the mechanisms giving rise to the widely diverging manifestations of CNS involvement in SLE. This report documents an intensive longitudinal study of three women with neuropsychiatric SLE. PET and neuropsychological evaluation were both used to examine the co-occurrence of behavioural/cognitive deficits with alterations in regional brain glucose metabolism. In all three patients, FDG uptake indicated abnormalities which were not identified on CT scan, but corresponded well with localisable cognitive deficits. Changes in each patient's cognitive profile on reassessment paralleled changes on PET. These findings support the suggestion that cognitive deficits in SLE patients reflect primary CNS involvement.
 ...
PMID:Fluctuating cognitive abnormalities and cerebral glucose metabolism in neuropsychiatric systemic lupus erythematosus. 146 2

The central nervous system (CNS) is clinically involved in approximately 40% of all systemic lupus erythematosis (SLE) patients. Minor psychiatric symptoms and abnormalities on neuropsychological testing are being detected with increasing frequency. This review summarizes current thinking concerning the diagnosis and pathogenesis of CNS lupus. The main symptoms of CNS lupus can be diffuse (generalized seizures, psychosis) or focal (stroke, peripheral neuropathies). Neuropsychiatric symptoms often occur in the first year of SLE, but are rarely the presenting symptoms of the disease. In studies on the pathology of CNS lupus, vasculopathy, infarcts and haemorrhages are often observed, whereas vasculitis is rare. Endocardial lesions and mural thrombi have also been reported in 33-50% of CNS lupus patients. In diagnostic imaging of the CNS, magnetic resonance imaging (MRI) scans often provide evidence for edema or small infarcts, both in focal and diffuse CNS lupus, whereas computerized tomography (CT) scans only show gross abnormalities. The first reports on position emission tomography (PET) scans in CNS lupus patients show decreased glucose uptake in the brain. The cerebral blood flow decreases during active diffuse and focal CNS lupus. The blood-brain barrier is somewhat more frequently impaired in diffuse CNS lupus. Intrathecal IgG and IgM production is observed in 25-66% of all CNS lupus patient. Various specificities of autoantibodies have been observed in CNS lupus. Of these, anticardiolipin (ACA) antibodies show a well-documented association with focal involvement of the CNS in SLE. These antibodies could cause thrombosis by interfering with the protein C pathway of fibrinolysis. In addition, they are associated with endocardial and valvular heart disease, which is often observed in SLE and which could cause embolism. The relation between ACA and diffuse CNS lupus is not yet clear. Low-avidity anti-DNA antibodies are also found in CNS lupus, possibly because of their cross-reaction with cardiolipin. Antineuronal antibodies and lymphocytotoxic antibodies have been associated with diffuse CNS lupus and abnormalities on neuropsychological testing. However, the population of these antibodies is rather heterogeneous and it has not been possible to assess a common target antigen. Therefore, it is still obscure whether there is also a second immune-mediated mechanism responsible for the development of the diffuse form of CNS lupus.
 ...
PMID:Diagnosis and pathogenesis of CNS lupus. 186 69

We studied a patient with systemic lupus erythematosus and type B insulin resistance, who progressed from extreme insulin resistance to fasting hypoglycemia. The plasma insulin level was 63.3 +/- 20.9 pmol/L in the fasting state and rose above 1440 pmol/L postprandially. Intravenous administration of human insulin caused almost no decline in plasma glucose. Therefore, it was concluded that the patient was still resistant to insulin and that plasma insulin did not play a crucial role in the development of hypoglycemia. Immunoglobulin G from this patient did not inhibit insulin binding to the insulin receptor; rather, it enhanced [125I]insulin binding in both the immunoprecipitate and the in vitro binding assay to intact cells. Antiinsulin receptor antibodies strongly inhibited insulin internalization in human adipocytes, slowed down the dissociation of [125I]insulin from receptors and failed to induce down-regulation of surface insulin receptors in both the presence and absence of insulin. Finally, autoantibodies mimicked the insulin stimulatory effect on human fat cell lipogenesis even after long term exposure, but inhibited the metabolic potency of insulin when added simultaneously with the natural ligand. We conclude that antiinsulin receptor antibodies induce fasting hypoglycemia, through their continuous receptor stimulatory action, and insulin resistance, possibly by a conformational perturbation of the receptor protein, which, in turn, uncouples insulin receptor binding from receptor function.
 ...
PMID:Insulin resistance and hypoglycemia in a patient with systemic lupus erythematosus: description of antiinsulin receptor antibodies that enhance insulin binding and inhibit insulin action. 187 39


1 2 3 4 5 6 7 8 9 10 Next >>