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81.
Arteriovenous brachio-basilic fistula as hemodialysis port. Original technique and long term results
Mazzoni G Frattarelli D Iafrancesco D Vagni V Morosetti M Mazzarella Farao R 《Il Giornale di chirurgia》2003,24(10):371-376
The authors report a prospective series of patients with-long term vascular access for chronic hemodialysis fashioned with a transposed brachio-basilic fistula. Over a three-year period (1998-2000), 14 patients underwent creation of the arteriovenous fistula. Demographic and clinical data were registered and a length of follow up more than 12 months was in all cases obtained. Of the 14 fistulas performed, 7 were successfully used for dialysis without complication. In seven patients late revision of fistulas was performed. The primary and secondary patency actuarial rates at two years were 50% and 75% respectively. The results of this series highlight as the basilic vein fistula provides reliable vascular access for chronic hemodialysis therapy. The low cost and the low morbidity rates suggest the brachial artery-transposed basilic vein fistulas as a valuable part of vascular access history of patients with chronic renal failure. 相似文献
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Carlo Meloni Massimo Morosetti Luciano Meschini Massimo Taccone-Gallucci Carlo Umberto Casciani 《Artificial organs》1993,17(3):188-190
Abstract: Hemodialysis treatment for acute renal failure is associated with a high incidence of adverse reactions. Hemodynamic stability and adequate correction of acid-base and hydroelectrolyte imbalance are the main goals of dialytic strategy in acute renal failure. However, the variety of etiology and the diversity of clinical conditions suggest that individualized treatment may be advisable. To this purpose, in 26 patients suffering from "isolated" acute renal failure of different etiologies, we have used acetate-free biofiltration. We have performed 411 dialyses with an extremely low incidence of symptomatic treatments and remarkable cardiovascular stability. Correction of fluid, electrolyte, and acid-base imbalance proved excellent. Dialytic efficacy proved adequate. Our data show that acetate-free biofiltration is an easy technique suitable for individualized treatment and adaptable to changing needs during hemodialysis in patients with isolated acute renal failure. 相似文献
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The hereditary inclusion-body myopathies encompass several syndromes with autosomal recessive or dominant inheritance. Despite a different clinical presentation they all have a progressive course leading to severe disability and share similar pathologic findings at the muscle biopsy. Quadriceps-sparing autosomal recessive hereditary inclusion-body myopathy (h-IBM) is the commonest form and is tied to mutations of the UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase (GNE) that codes for a rate-limiting enzyme in the sialic acid biosynthetic pathway. Despite the identification of the causative gene defect, it has not been clarified how mutations of the GNE gene impair muscle homeostasis. Although several lines of evidence argue in favor of an abnormal sialylation of muscle glycoproteins playing a key role in h-IBM pathogenesis, others studies have demonstrated new functions of the GNE gene, outside the sialic acid biosynthetic pathway, that may also be relevant. This review illustrates the clinical and pathologic characteristics of h-IBM and the main clues available to date concerning the possible pathogenic mechanisms of this disorder. Understanding the molecular mechanism underlying h-IBM pathology is a fundamental requisite to plan a future attempt to therapy. 相似文献
87.
Luigetti M Di Lazzaro V Broccolini A Vollono C Dittoni S Frisullo G Pilato F Profice P Losurdo A Morosetti R Testani E Colicchio S Della Marca G 《Journal of the neurological sciences》2011,300(1-2):151-154
The vascularization of the human thalami is supplied by many perforating arteries, which exhibit complex distribution and many possible individual variations. One rare variant is the artery of Percheron that supplies the paramedian thalami bilaterally. Its ictal occlusion may result in a symmetric paramedian infarction, which generally leads to impairment of consciousness associated with hypersomnia. Our aim is to describe in detail sleep-wake schedules, sleep structure and microstructure in a 68-year-old patient with occlusion of Percheron's artery. EEG monitoring, performed 24 h after the onset of symptoms, showed severe disruption of the sleep-wake cycle, with episodes of sleep and wakefulness recurring irregularly during day and night. Thalamic nuclei are part of the human arousal system; medial thalamic nuclei play a pivotal role in sleep regulation at different levels. A diagnosis of paramedian thalamic infarction should be considered in patients who present with recurrent episodes of unresponsiveness. 相似文献
88.
Morosetti R Gliubizzi C Sancricca C Broccolini A Gidaro T Lucchini M Mirabella M 《The American journal of pathology》2012,180(4):1603-1613
Tumor necrosis factor-like weak inducer of apoptosis (TWEAK) and its receptor Fn14 exert pleiotropic effects, including regulation of myogenesis. Sporadic inclusion-body myositis (IBM) is the most common muscle disease of the elderly population and leads to severe disability. IBM mesoangioblasts, different from mesoangioblasts in other inflammatory myopathies, display a myogenic differentiation defect. The objective of the present study was to investigate TWEAK-Fn14 expression in IBM and other inflammatory myopathies and explore whether TWEAK modulation affects myogenesis in IBM mesoangioblasts. TWEAK, Fn14, and NF-κB expression was assessed by immunohistochemistry and Western blot in cell samples from both muscle biopsies and primary cultures. Mesoangioblasts isolated from samples of IBM, dermatomyositis, polymyositis, and control muscles were treated with recombinant human TWEAK, Fn14-Fc chimera, and anti-TWEAK antibody. TWEAK-RNA interference was performed in IBM and dermatomyositis mesoangioblasts. TWEAK levels in culture media were determined by enzyme-linked immunosorbent assay. In IBM muscle, we found increased TWEAK-Fn14 expression. Increased levels of TWEAK were found in differentiation medium from IBM mesoangioblasts. Moreover, TWEAK inhibited myogenic differentiation of mesoangioblasts. Consistent with this evidence, TWEAK inhibition by Fn14-Fc chimera or short interfering RNA induced myogenic differentiation of IBM mesoangioblasts. We provide evidence that TWEAK is a negative regulator of human mesoangioblast differentiation. Dysregulation of the TWEAK-Fn14 axis in IBM muscle may induce progressive muscle atrophy and reduce activation and differentiation of muscle precursor cells. 相似文献
89.
Coen G Manni M Agnoli A Balducci A Dessi M De Angelis S Jankovic L Mantella D Morosetti M Naticchia A Nofroni I Romagnoli A Gallucci MT Tomassini M Simonetti G Splendiani G 《ASAIO journal (American Society for Artificial Internal Organs : 1992)》2006,52(2):150-156
Cardiac calcifications are a frequent finding in hemodialysis for chronic renal failure. Several factors may play a role in the intimal and medial calcification of coronary arteries such as age and some known atherogenetic factors. In addition, Fetuin-A has been proposed as a protective agent through solubilization of calcium phosphate salt. Fetuin-A is also a marker of inflammatory-nutritional state, and its changes could be an expression of this condition. The aim of this cross-sectional study is to evaluate the relative importance of risk factors of calcifications with special regard to Fetuin-A.The study was conducted with 132 hemodialysis patients. They were subjected to multislice computed tomography for evaluation of calcium deposits in the heart. In addition, the patients were sampled for evaluation of calcium-phosphate parameters, lipid profile, nutritional and inflammatory markers, and also Fetuin-A.There was a wide variability of the extent of calcium deposits expressed as Agatston score, with only 9.3% of patients without calcifications. Age, hemodialysis age, sex, calcium-phosphate parameters, and lipid profile were important risk factors, together with nutritional and inflammatory status of the patients. An inverse correlation between coronary calcium score and Fetuin-A emerged from a multiple regression analysis. However, there was no significant difference in serum Fetuin-A among different grades of calcium score. By dividing the patients in tertiles of serum Fetuin-A, an association between low levels of Fetuin-A and high calcification score was found. Fetuin-A as dependent variable was strictly linked to prealbumin serum levels. In addition, there was a clear link between cardiac calcification scores and inflammatory-nutritional markers. Serum calcium and treatment with calcitriol emerged as predictive variables of coronary score.Fetuin-A could be involved in the process of calcification both in the case of markedly low serum levels, due to decreased prevention of calcium phosphate precipitation, and also as a marker of inflammation, a well-known risk factor of atherogenesis. Treatment with intravenous calcitriol could marginally enhance cardiac calcifications, probably through its hypercalcemic effect. 相似文献