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Query: UMLS:C0011849 (diabetes)
 277,896 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

IgA and IgG antigliadin antibodies were measured in 498 patients with insulin dependent diabetes mellitus and no history of intestinal malabsorption. Thirty patients had abnormal concentrations of antigliadin antibodies; 22 of these had an intestinal biopsy carried out and 16 of the 22 had subtotal villous atrophy suggestive of coeliac disease (prevalence 3.2%). There were no significant differences between patients with coeliac disease and diabetes and diabetic patients with normal IgA antigliadin antibodies in any of the nutritional variables measured, duration of diabetes, and mean insulin requirement. The mean age of onset of diabetes and attainment of expected height for age were both significantly lower in the patients with both diseases. Typing HLA classes I and II was done in 242 patients. The incidence of HLA-B8, DR3, and DQW2, which are commonly associated with both the diseases, is increased when both are present.
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PMID:Screening of diabetic children for coeliac disease with antigliadin antibodies and HLA typing. 203 7

Erythrocyte aggregation is one of the principal determinants of blood viscosity at low shear rates (low flow). Anatomical and hemodynamical characteristics make retinal venous circulation particularly dependent on hemorheological factors. Erythrocyte aggregation and other laboratory parameters (haematocrit, fibrinogen, plasma proteins, clotting) were measured in 85 patients presenting with retinal vein occlusion and 64 controls matched for age, sex and vascular risk factors (hypertension, diabetes, smoking). Statistical analysis of the results demonstrated a significant difference between the retinal vein occlusion group an the control group for erythrocyte aggregation (p less than 0.001 for the aggregation index at 10 sec and for the threshold of dissociation). The fibrinogen level, haematocrit and plasma proteins (albumin, IgA, IgG, IgM, total proteins, 2-macroglobulin) were similar in the two groups. No statistically significant difference for erythrocyte aggregation was observed between occlusions of the venous branch and occlusions of the central retinal vein or between ischaemic and non-ischaemic forms. These results suggest that raised erythrocyte aggregation mainly explains the increase in blood viscosity previously demonstrated, and could play a role in the constitution of retinal vein occlusion.
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PMID:[Increase of erythrocyte aggregation in retinal vein occlusion]. 208 40

Thirty three patients, 24 male and 9 female, aged from 19 to 90 with an average of 58.8, were admitted to the medical intensive care unit (ICU) from 1988 December to 1989 December. Their host defenses were evaluated. Cell-mediated immunity (CMI) included delayed type skin test (MULTITEST CMI), total lymphocyte count and lymphocyte subpopulations (CD3, CD4 and CD8) were determined. Investigation of humoral immunity (HI) included use of serum levels of immunoglobulins (IgG, IgA and IgM) and complements (C3 and C4). Episodes of nosocomial infection were documented by patients' clinical and laboratory data, including positive culture. The CMI, especially for total lymphocyte count, T lymphocyte count and skin test, was impaired by underlying diabetes mellitus and such associated conditions as malnutrition, steroid administration and surgical procedures. The longer the admission period, the lower was the CMI including total lymphocyte count, CD3 percentage, CD4 percentage and skin test response. The HI was less impaired by underlying conditions and not influenced by admission duration. More infection episodes were found in patients with longer admission duration. In conclusion, the host defense was impaired in patients hospitalized longer in medical ICU, and the combination of compromised immunity and impaired mucocutaneous barriers made them more susceptible to infections.
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PMID:Evaluation of host defense in critically ill patients in medical intensive care unit. 209 3

C3 fixing IgA immune complexes were found to be elevated in 25% of patients with type 2 (non insulin-dependent) diabetes mellitus as compared to healthy subjects (2%). Immune complexes containing both IgA and IgG were found in 42% of the diabetic population but not in controls. The presence of C3-IgA and/or IgA/IgG immune complexes correlated with the occurrence of antiglobulins antibodies of IgA class in particular with autoantibodies reactive with the Fab2 portion of IgG. These immunopathological findings were more frequent in patients that exhibited microvascular complications and in particular in patients with proliferative retinopathy. These and our previous results strongly suggest a role of IgA system abnormality in the pathogenesis of diabetic vascular complications.
Diabetes Res 1990 Dec
PMID:Increased plasma levels of IgA-IgG immune complexes and anti-F(ab')2 antibodies in patients with type 2 (non insulin-dependent) diabetes mellitus and microangiopathy. 213 9

Another autoimmune disease was found to accompany insulin dependent diabetes mellitus (IDDM) in 14% of the young diabetics (n = 14) studied. Thyroid autoimmune disease was the most common of the accompanying autoimmune diseases, and was detected in 11% (n = 15) of the patients. Two thirds of the IDDM patients with autoimmune thyroiditis were hypothyroid, one was hyperthyroid, and 20% lacked detectable thyroid antibodies when thyroid disease was diagnosed. Coeliac disease was found in 2% of the patients, and one had Addison's disease. Autoantibodies were found in one third of the patients. Thyroid microsomal antibodies were detected in 22% of the patients, IgA anti-gliadin in 11%, gastric parietal cell antibodies in 3% and rheumatoid factor in 7%. Autoimmune disease and the relevant autoantibodies coexisted in 11% of the patients. Autoimmune disorders and autoantibodies were not associated to any particular HLA type. The distribution of the HLA-types in the patients was unusual in that the frequency of HLA-DR3 was not increased. The value of autoantibody tests in the diagnosis of functional disorders of the thyroid and of coeliac disease are discussed.
Diabetes Res 1990 Apr
PMID:Autoantibodies and autoimmune diseases in young diabetics. 213 5

Circulating autoantibodies to insulin can be detected in patients with insulin-dependent (type I) diabetes mellitus (IDDM) at the onset of the clinical disease. To characterize the autoantibody response in IDDM patients, we determined the frequency of circulating B cells committed to the production of IgM, IgG, and IgA to insulin in 12 newly diagnosed IDDM patients and, for comparison, in 9 healthy subjects and 17 insulin-treated IDDM patients. We found that B cells committed to the production of anti-insulin IgG, but not IgM, autoantibodies are present at much higher frequency in the circulation of newly diagnosed IDDM patients before insulin treatment (0.209 +/- 0.142%, mean value +/- SD of total IgG-producing cell precursors) as compared with age-matched healthy controls (0.032 +/- 0.030% of total IgG-producing cell precursors). In IDDM patients who had been treated with insulin, cells producing IgG antibody to insulin were 0.177 +/- 0.139% of total IgG-producing cell precursors. Generation of IgG mAb from B cells of IDDM patients revealed that they were monoreactive, i.e., they bound to insulin, but to none of the other Ag tested, and displayed a high affinity for insulin (Kd approximately 10(-7) moles/liter). In contrast, the IgG mAb derived from healthy subjects were polyreactive, i.e., they bound to all Ag tested, and displayed a low to moderate affinity for insulin (Kd approximately 10(-5) to 10(-6) moles/liter). These findings show that lymphocytes committed to the production of high affinity IgG autoantibodies to insulin are common in the B cell repertoire at the onset of IDDM.
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PMID:Frequency of B cells committed to the production of antibodies to insulin in newly diagnosed patients with insulin-dependent diabetes mellitus and generation of high affinity human monoclonal IgG to insulin. 215 34

In view of the increasing awareness of corneal abnormalities in diabetes, five diabetic and five nondiabetic post-mortem corneas were investigated. Indirect fluorescent antibody techniques were used for the detection of immunoglobulin, complement components, fibrinogen, and fibronectin, as some of these had already been found in the kidney, pancreas, and skin of diabetic patients. There was no obvious difference in the deposition of IgG, IgA, IgM, fibrinogen, or fibronectin between diabetic and control corneal specimens. Five diabetic specimens versus three control specimens demonstrated positive staining at 1:50 dilution for complement components Clq, C3, and C4. This staining was primarily present in the epithelium. Of greater interest was the finding that complement components were present in the basement membrane of two diabetic patients, but were not found in nondiabetic patients. In conclusion, diabetic corneas demonstrate unusual staining for complement components in the epithelial basement membrane.
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PMID:Immunofluorescent characteristics of the diabetic cornea. 218 64

The authors examined 21 patients with type I diabetes within 30 days after establishment of the diagnosis and during the first year of the disease. In 17 they detected autoantibodies against insulin at the time of assessment of the diagnosis before administration of the therapeutic insulin preparation. Fourteen patients had antibodies against the surface of islet cells (ICSA), the titre of which declined during the first year of the disease. The serum immunoglobulin level (IgG, IgM and IgA) was on average within the normal range; however, in two patients at the time of establishment of the diagnosis and in three patients after one month IgG was above normal, in eight patients the IgM level was at the time of establishment of the diagnosis above normal, one month later this was the case only in two patients and in four patients the IgA level was permanently low. During the investigation period the level of C-3 and C-4 components of the complement declined steadily and the level of circulating immune complexes increased. The mentioned deviations were not associated with the concurrent infectious disease at the time of establishment of the diagnosis or with metabolic indicators. The patients were treated the whole time by an intensified insulin regime--principle basal bolus or continuous subcutaneous infusion of single component insulin.
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PMID:[Variations in indicators of humoral immunity in type I diabetes]. 218 71

The metabolism of albumin and IgG was investigated in two siblings, products of a first-cousin marriage, a female aged 34 yr and a male aged 17, who had a marked reduction in their respective serum concentrations of IgG (1.3 and 3.1 mg/ml) and albumin (19 and 21 mg/ml). The metabolism of radioiodinated IgG and albumin was studied in the two patients. The total circulating and body pools of IgG were less than 28% of normal. The IgG synthetic rates were within the normal range. However, the IgG survival was short, with their respective fractional catabolic rates increased fivefold to 31% and 36% of the intravenous pool per day (normal, 6.7 +/- 2%/d). Furthermore, the patients had reduced total body pools, normal synthetic rates, and increased fractional catabolic rates for albumin. There was no proteinuria or abnormality of renal or liver function. In addition, the patients did not have circulating antibodies directed toward IgG, IgA, or albumin. Furthermore, both patients had normal fecal 51Cr-labeled albumin tests, thus excluding excessive gastrointestinal protein loss. We propose that these siblings have a previously unrecognized familial disorder characterized by reduced serum concentrations of IgG and albumin caused by a defect in endogenous catabolism, leading to a short survival of these proteins that is associated in this family with chemical diabetes and a skeletal deformity.
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PMID:Familial hypercatabolic hypoproteinemia. A disorder of endogenous catabolism of albumin and immunoglobulin. 225 61

Eighteen patients with coeliac disease were found by screening for reticulin antibodies of unselected sera at the time when determination of various tissue antibodies was requested. Joint disease, allergic and pulmonary disorders, and diabetes were particularly observed. IgA class reticulin antibody, in particular, proved to be specific for coeliac disease. Most patients with coeliac disease also had positive serum gliadin antibodies. Abdominal symptoms and signs of malabsorption were slight and infrequent. In most patients a gluten-free diet resulted in the improvement of jejunal mucosal histology, and serum reticulum and gliadin antibody titres decreased simultaneously, reflecting the appropriateness of the diet. Coeliac disease often has mild and atypical symptoms, and, particularly in certain disease groups, screening with reticulin antibody test seems to be appropriate.
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PMID:Atypical coeliac disease found with serologic screening. 232 Sep 42


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