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  • 1
    ISSN: 1432-0428
    Keywords: Keywords Insulin ; adhesion molecules ; endothelium ; vascular cell adhesion molecule-1 ; non-insulin-dependent diabetes mellitus.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Aims/hypothesis. To evaluate the effects of insulin on vascular cell adhesion molecule-1 expression by cultured human vascular endothelial cells and soluble vascular cell adhesion molecule-1 release in vivo. Methods. Human vascular endothelial cells derived from umbilical cord veins were incubated with either insulin (from 10–6 to 10–9 mol/l) or tumour necrosis factor-α (5 ng/ml) for 6 to 24 h. Plasma soluble vascular cell adhesion molecule-1 concentrations were evaluated in 12 non-insulin-dependent diabetic patients (8 men, 4 women, mean age 47.1 ± 7.7 years) and 12 healthy volunteers matched for age, sex and weight (7 men, 5 women, mean age 42.2 ± 7.2 years) before and after a 2-h euglycaemic hyperinsulinaemic clamp. Results. Transcriptional activities of nuclear factor-ϰB luciferase and vascular adhesion molecule-1 luciferase statistically significantly increased after incubation with tumour necrosis factor-α. By contrast, a slight increment of nuclear factor-ϰB luciferase (mean: 1.8 ± 0.3 fold) but not of vascular cell adhesion molecule-1 luciferase transcriptional activities were detected in cells stimulated with insulin. Soluble vascular cell adhesion molecule-1 concentrations in cell supernatants increased after tumour necrosis factor-α but not insulin stimulation. In vivo, baseline plasma soluble vascular cell adhesion molecule-1 concentrations were higher (p = 0.03) in non-insulin-dependent patients (708.7 ± 97.4 μg/l) than controls (632.1 ± 65.2 μg/l) but were not related to fasting insulin concentrations and did not change during insulin infusion. Conclusion/interpretation. The increased concentrations of circulating soluble vascular cell adhesion molecule-1 indicates that the vascular endothelium is activated in non-insulin dependent diabetic patients. Our in vitro and in vivo findings show that vascular cell adhesion molecule-1 activation cannot be due to hyperinsulinaemia. [Diabetologia (1999) 42: 1235–1239]
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1434-9949
    Keywords: Lung Volume Measurement ; Airway Obstruction ; Pulmonary Diffusing Capacity ; Connective Tissue Diseases
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Lung volumes, forced expiratory flow-volume curves, diffusing capacity indexes, and arterial blood gases were measured in 72 non-smoking patients with various connective tissue diseases (13 with rheumatoid arthritis, 17 with systemic lupus erythematosus, 25 with progressive systemic sclerosis, 10 with primary Sjögren's syndrome, 4 with polymyositis, and 3 with mixed connective tissue disease). Small airways disease and a diffusion capacity impairment were the most frequent and marked functional abnormalities in the whole group, and were often present in asymptomatic patients. Different lung function defects seemed to be present in each disease group. In fact, large airway obstruction was prevalent in progressive systemic sclerosis, diffusion capacity impairment in systemic lupus erythematosus, and small airways disease in rheumatoid arthritis. In contrast, primary Sjögren's syndrome appeared to be the connective tissue disease in which lung function abnormalities were less frequent and less pronounced.
    Type of Medium: Electronic Resource
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