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

The association of intracellular viscosity of red blood cells and the dynamic properties of erythrocyte membranes in children suffering from diabetes has been investigated by means of ESR spectroscopy. It has been revealed that the slight decrease in the ratio hw/hs of maleimide bound to membrane protein-SH groups of erythrocytes in diabetes may ensue from the enhanced membrane protein immobilization in the plane of lipid bilayer. These alterations were accompanied by a corresponding increase in the relative rotational correlation time (tau c) of iodoacetamide spin label, thus suggesting that the conformational changes in membrane proteins may occur at both the intrinsic and more exposed thiol groups. The membranes of diabetic red blood cells were more glycosylated than those of relevant controls, and the extent of glycosylation was found to correlate significantly with h + 1/h0 and tau c (r = -0.652, P < 0.01 and r = 0.609, P < 0.01). Further, the conformational alterations in erythrocyte membranes from diabetic subjects were accompanied by a significant increase in the mobility parameter (h + 1/h0) of haemoglobin molecules in diabetic erythrocytes. The latter changes correlated well with the enhanced intracellular viscosity of diabetic red blood cells and the level of glycosylated haemoglobin. We conclude that the alterations in membrane lipid-protein interactions together with the increased glycosylation-derived internal viscosity may consequently imply altered viscoelastic properties of erythrocyte membranes and, underlying the impaired deformability of red blood cells in the diabetic state, contribute to the development of late diabetic sequelae.
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PMID:The association between erythrocyte internal viscosity, protein non-enzymatic glycosylation and erythrocyte membrane dynamic properties in juvenile diabetes mellitus. 132 16

1. The dynamic properties of erythrocyte membranes in diabetic children and of control erythrocyte membranes subjected to in vitro glycation have been investigated by means of fluorescence quenching of membrane tryptophan residues and ESR spectroscopy. 2. The apparent distance separating the membrane protein tryptophan and the bound 1-anilino-8-naphthalenesulphonate (ANS) molecules was decreased in erythrocyte membranes from children with diabetes. This resulted in a significant increase of the maximum energy transfer efficiency in diabetic membranes. 3. The relevant alterations occurred in the above parameters due to the in vitro nonenzymatic glycosylation of control membranes. 4. These changes were accompanied by the decreased hw/hs parameter of MSL and the increased relative rotational correlation time (tau c) of ISL in diabetic membranes and in the membranes subjected to in vitro glycation. 5. The results suggest that the conformational changes in membrane proteins may occur at both the intrinsic and exposed thiol groups. 6. Both the in vivo and the in vitro data indicate that nonenzymatic glycosylation of membrane proteins may be the major factor attributable to the alterations in the dynamic properties of erythrocyte membrane in diabetic state.
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PMID:Hyperglycaemia alters the physico-chemical properties of proteins in erythrocyte membranes of diabetic patients. 133 22

A 69-year-old-female with a history of rheumatoid arthritis since 1975 had suffered from dysesthesia of extremities since October 1989. Radiating pain and weakness occurred when she tried to stand up on Dec. 25 in 1989. She was admitted to our hospital in October 1990. Physical examination showed emaciation, hypesthesia of extremities, hypesthesia over the right chest and back, impaired vibration and position sense, and hyperreflexia. Laboratory findings revealed that the erythrocyte sedimentation rate was elevated to 46mm/hr, rheumatoid factor (RF) to 83.1IU/ml and CRP to 3.7mg/dl. Her blood sugar was high and she was diagnosed as having diabetes mellitus. Cervical X ray film showed atlanto-axial subluxation. A pseudotumor around the odontoid process bulging into the spinal canal and compression of the upper cervical cord was observed by MRI. In spite of administration of bucillamine (100mg/day), the size of pseudotumor did not change. Methotrexate (MTX) at a dose of 5mg/week was started in February 1991 and the pseudotumor decreased in size with a concurrent reduction of ESR, RF and CRP. However, the high intensity lesion by T2 weighed image did not change and dysesthesia persisted. The pseudotumor was thought to be due to pannus and it was revealed that MTX was effective for reduction. The persistent dysesthesia was probably due to the degeneration of the upper cervical cord, although diabetic neuropathy may also have played a role.
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PMID:[A case of rheumatoid arthritis complicated with pseudotumor around odontoid process successfully treated by methotrexate]. 144 85

In a prospective study involving eleven general practices, dry-chemical laboratory methods were compared with wet-chemical methods in the establishment of the diagnosis. The study included 658 patients in whom defined liver disease, lipid metabolic disturbances, diabetes mellitus or hyperuricemia were clinically suspected. In the "dry chemistry" group, between 12 and 29% fewer basic examinations (ESR, Hb, erythrocytes, leukocytes) were performed than in the "wet chemistry" group. In addition the number of analyses per patient in the so-called search program and among the subsequently requested laboratory analyses were also lower by about 21% in the "dry chemistry" group. This indicates that through the use of "dry chemistry", laboratory examinations can be used with greater selectivity. A further advantage of "dry chemistry" is the appreciably shorter time required to establish and report the diagnosis.
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PMID:[The evaluation of dry chemical laboratory methods. Their value within the framework of step-by-step diagnosis in general medicine]. 234 Nov 3

The clinical, pathological, and epidemiological relationships between fasting plasma glucose (FPG) concentrations and the sites of lesion in osteoarthritis (OA) were evaluated in 1026 patients. The mean FPG (99 +/- 22.2 mg/dL) was significantly higher in OA (p less than 0.01) than in the normal controls (88 +/- 19.9 mg/dL). In addition, the mean FPG (97.9 +/- 23 mg/dL) was significantly higher in female patients with OA (p less than 0.01) than in an osteoporotic sex-matched control group (92.8 +/- 24.5). FPG concentrations did not vary significantly according to the sites of the OA lesions. Fifty-six (5.5%) OA patients had long-term diabetes mellitus (FPG greater than 140 mg/dl). Few significant differences in the pathological and clinical findings were seen between normoglycemic and hyperglycemic OA patients, only the ESR (p less than 0.01) and pain at rest (p less than 0.02) being higher in the second group. These epidemiological data support the observation that hyperglycemia, which acts on matrix macromolecules, may be related to the development of bone degenerative disease.
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PMID:Plasma glucose concentration in symptomatic osteoarthritis: a clinical and epidemiological survey. 237 41

The before introduced solid phase ELISA was employed for the RF determination in the sera of RA patients and controls. The threshold values for positive results (calculated as the 95% distribution percentile of healthy donors) were 8, 3, and 3 U/ml for IgA, IgG, and IgM-RF, respectively. The results confirm the validity of the assay with clear negative results in several negative control groups (healthy donors, patients of the oto-, rhino-, laryngeal ambulance, diabetes mellitus, degenerative arthropathies; n = 111, median IgA, IgG and IgM-RF values of less than or equal to 2, less than or equal to 2 and less than or equal to 1 U/ml, respectively; 25-75% distribution percentiles within the median value) and positive results in the positive control group (seropositive RA; n = 20, median IgA, IgG and IgM-RF values of 324, 479 and 170 U/ml, respectively). 16/24 patients with so-called seronegative RA (negative Latex Fixation Test or Waaler Rose Test) had positive results in the ELISA, two of them had rheumatoid nodules clinically. The IgG-RF activity in the ELISA appears to be a good parameter for the course control of RA under gold therapy. 10 RA patients with clinical improvement of disease (declining ESR, CRP, joint index) after six months of gold therapy (= 0.6 g total gold amount) had a decline of total RF activity of 70% in median, whereas 10 patients with no clear effect on disease activity had only a decline of 20% in median.
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PMID:An ELISA for IgA-IgG and IgM-RF measurement. II. RF in several disease and control groups and under gold therapy in RA. 323 59

Necrotizing angiodermatitis is of characteristic clinical expression and is often difficult to treat. It is associated with microcirculatory disorders of hypertensive or diabetic origin. A particularly long course (m = 8 months) in 8 patients with necrotic angiodermatitis (of hypertensive origin in 6 cases and diabetes in 2) resulted in treatment by plasma exchange, two other patients with immunological angiodermatitis being treated similarly because of very similar symptomatology. The 10 patients (3 men, 7 women age range 55 to 80 years) received between 4 and 18 small volume plasma exchanges over 2 to 12 weeks. Results were evaluated from pain and duration of healing, absence of pain being reported by 7 patients and a beneficial effect on healing by 6 patients. No correlation existed between ESR and hematocrit values during treatment and the clinical course. The question arises as to whether the mode of action of plasma exchange in angiodermatitis is related to the purifying of serum factors or a rheological role.
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PMID:[Does plasma exchange have a place in the treatment of necrotizing angiodermatitis?]. 324 85

In 15 consecutive patients with AION the cause was found to be giant-cell arteritis in 3 cases and was thought to be local arteriosclerosis of the posterior ciliary arteries in 12 cases, in spite of rheumatic factors which were found initially. In 87% of cases symptoms or factors indicating generalised arteriosclerosis were found. In one case before the AION cilioretinal emboli had been found. It is reported that the second eye is affected after a varying interval of time in +/- 50% of cases. In our material the arteriosclerotic form of AION occurred bilaterally in +/- 40% of cases with an interval varying from a few days to 5 years. The average interval for this form of AION is 3 years. Cerebral angiography was of no help in tracing the cause of the AION. A fluorescein angiogram is often made too late to show the characteristic circulatory disturbance in the peripapillary choroid and is usually not necessary. Therapy should be started immediately, with large doses of corticosteroids in all cases of AION, until biopsy of the temporal artery proves negative or the ESR is practically normal. Hypertension and diabetes should be treated adequately as protection for the other eye in the arteriosclerotic form of AION. In addition long-term anticoagulant therapy should be considered: a prospective study into this aspect has been started.
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PMID:Anterior ischemic optic neuropathy: sense and nonsense in diagnosis and treatment. 351 16

A 55-year-old woman with a long-standing history of diabetes mellitus controlled with insulin was admitted under the Medical Unit to the Royal Sussex County Hospital, Brighton, on 27 December 1981, with a history of diarrhoea and anorexia of several weeks' duration. Prior to admission she had complained of a cough and her condition had been deteriorating rapidly for two days. On admission she had signs of pneumonia and this was confirmed on chest X-ray which showed diffuse shadowing on the right. The patient was placed on antibiotics, but her condition worsened over the next 24 hours and she suffered a respiratory arrest from which she was, however, successfully resuscitated. Subsequent to this event she was transferred to the Intensive Therapy Unit. Here her condition continued to deteriorate, with bilateral pneumonic changes and an uncertain degree of cerebral damage. On 7 January 1982, the E.N.T. Department was approached with a view to performing a tracheostomy in view of the need for prolonged ventilation. The patient was noted to be clinically myxoedematous and thyroid function tests confirmed this with a free thyroxine level of 0.4 pmol./litre. Other thyroid function tests were: Total T4-2 nmol./l.; TBG-216 nmol./l.; T3U-107; FTI-2. The ESR was 54 mm. in the first hour.
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PMID:Riedel's thyroiditis discovered at tracheostomy. 396 81

The data from the case histories of 106 patients with myocardial infarction (MI) and diabetes mellitus (DM) from the intensive care unit of III Internal Clinic of the Medical Faculty of the Higher Medical Institute "I. P. Pavlov"-- Plovdiv are interpreted as well as of the same number of patients with myocardial infarction without diabetes mellitus. The authors found a higher percentage of painless forms of myocardial infarction in diabetics, no matter the duration, form and severity of the diabetes. The patients with DM and MI have a slowed down rehabilitation and reverse ECG dynamics. The complications in both groups observed do not differ. Myocardial rupture is significantly more frequent among the females from both groups. High leukocytosis, with shifting to the left, accelerated ESR, high SGOT and LDH activity and hypercoagulemia as well as their slowed down restoration should be admitted--a constellation with an unfavourable prognostic sign, requiring a cautious treatment and a slower rehabilitation.
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PMID:[Diabetes mellitus and myocardial infarct]. 673 Apr 54


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