990 resultados para STEROID 21-HYDROXYLASE DEFICIENCY


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Kirje

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Kirje 21.3.1971

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Kirje 21.12.1962

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Puhe

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Presenta los resultados obtenidos durante las faenas de pesca del B/E Audaz entre el 21 de agosto y el 02 de octubre de 1995, capturando la merluza con el arte de pescar de palangre de fondo o espinal, diseñado en España e introducido en Chile con resultados óptimos.

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Kirje

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HYPOTHESIS: Supraspinatus deficiency associated with total shoulder arthroplasty (TSA) provokes eccentric loading and may induce loosening of the glenoid component. A downward inclination of the glenoid component has been proposed to balance supraspinatus deficiency. METHODS: This hypothesis was assessed by a numeric musculoskeletal model of the glenohumeral joint during active abduction. Three cases were compared: TSA with normal muscular function, TSA with supraspinatus deficiency, and TSA with supraspinatus deficiency and downward inclination of the glenoid. RESULTS: Supraspinatus deficiency increased humeral migration and eccentric loading. A downward inclination of the glenoid partly balanced the loss of stability, but this potential advantage was counterbalanced by an important stress increase within the glenoid cement. The additional subchondral bone reaming required to incline the glenoid component indeed reduced the bone support, increasing cement deformation and stress. CONCLUSION: Glenoid inclination should not be obtained at the expense of subchondral bone support.

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Objectives: To evaluate the degree of tubular involvement in INS at various stage of the disease. Methods: 19 patients with INS were studied. 13 were steroid responders (group 1). 5 of them had biopsy which showed MCD. 6 patients were non responder to steroid or were steroid dependant with frequent relapses (group 2). Biopsies showed 3 FSGS and 3 MCD. They were treated with prednisone, ciclosporin and/ or mycofenolate mofetil. Protein, microalbumin (ALB), alpha-microglobulin (AMG), N-acetyl-beta-D-glucosaminidase (NAG) and creatinine (cr) were measured in each urine sample. Patients were considered in remission if prot/ cr ratio (g/mol) was < 20 (group 1a and 2a), and in relapse if the ratio was > 200 (group 1c and 2c). Some patients in group 1 had non nephrotic proteinuria (group 1b). Tubular dysfunction was defi ned by NAG/cr ratio (mg/mmol) > 0.86 or by AMG/cr ratio (mg/mmol) > 1.58. Results: Prot/cr ALB/cr NAG/cr AMG/cr Group 1a 10.3 ± 4.1 1.1 ± 1.0 0.19 ± 0.12 1.40 ± 0.97 Group 1b 60.4 ± 63.4 42.8 ± 66.7 0.39 ± 0.21 1.20 ± 0.56 Group 1c 713.3 ± 276.8 799.8 ± 534.9 2.25 ± 1.86* 4.25 ± 2.09* Group 2a 11.3 ± 6.1 4.7 ± 5.7 0.26 ± 0.19 1.18 ± 0.60 Group 2c 914.9 ± 718.6 682.9 ± 589.3 3.00 ± 2.72* 5.47 ± 4.30* Results are mean ± SD, p < 0.001 compared to group 1a and 2a No difference was observed between group 1 and group 2 neither in remission nor in relapse. Conclusions: These data indicate that tubular dysfunction occurs in INS but only in patients in relapse. In this population, tubular dysfunction was independent of the severity of the nephrotic syndrome, the treatment protocol and the histopathology.

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Introduction: Vitamin D plays a major role in bone metabolism and neuromuscular function. Supplementation with vitamin D is effective to reduce the risk of fall and of fracture. However adherence to oral daily vitamin D supplementation is low. Screening and correcting vitamin D insufficiency in a general rheumatologic population could improve both morbidity and quality of life in these patients with chronic painful disorders and at high risk of osteoporosis. After determining the prevalence of vitamin D deficiency in this population, we evaluated if supplementation with a single high dose of oral 25-OH vitamin D3 was sufficient to correct this abnormality. Methods: During one month (November 2009), levels of 25-OH vitamin D were systematically determined in our rheumatology outpatient clinic and classified into three groups: vitamin D deficiency (<10 µg/l), vitamin D insufficiency (10 to 30µg/l) or normal vitamin D (>30 µg/l). Patients with insufficiency or deficiency received respectively a single high dose of 300'000 IU or 600'000 IU oral vitamin D3. In addition, all patients with osteoporosis were prescribed daily supplement of calcium (1g) and vitamin D (800 IU). 25-OH vitamin D levels were reevaluated after 3 months. Results: Vitamin D levels were initially determined in 292 patients (mean age 53, 211 women, 87% Caucasian). 77% had inflammatory rheumatologic disease (IRD), 20% osteoporosis (OP) and 12% degenerative disease (DD). Vitamin D deficiency was present in 20 (6.8%), while 225 (77.1%) had insufficiency. Of the 245 patients with levels <30µg/l, a new determination of vitamin D level was available in 173 (71%) at 3 months (table 1). Conclusion: Vitamin D insufficiency is highly prevalent in our rheumatologic population (84%), and is not adequately corrected by a single high dose of oral vitamin D3 in more than half of the patients with IRD and DD. In patients with OP, despite association of a single high dose with daily oral vitamin D supplementation, 40% of patients are still deficient when reevaluated at 3 months.