Il quadro radiologico delle alterazioni muscolo-scheletriche nell’insufficienza renale cronica. Imaging of musculo-skeletal manifestations associated with chronic renal insufficiency.

Le alterazioni muscolo-scheletriche in corso di insufficienza renale cronica sono molteplici. Le alterazioni radiologiche più frequenti (osteodistrofia renale) sono correlate all'iperparatiroidismo secondario, all'osteoporosi, all'osteomalacia. si possono riscontrare lesioni correlate al trapianto ed al trattamento dialitico

Prevalence of superficial dermatomycoses in 73 renal transplant recipients

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Isolated thrombocytopenia by splenic sequestration in hemodialyzed patients

'Isolated' thrombocytopenia by splenic sequestration in hemodialyzed patient

The effect of polyamines and dialysate fluid on extracellular matrix synthesis in VERO cell cultures

BACKGROUND: Polyamines are involved in normal and pathological cell proliferation and differentiation. Like acid radicals, they play an important role in remodelling the extracellular matrix and are considered "uremic toxins". Proteins and glycosaminoglycans are essential components of the extracellular matrix, and contribute to normal mature organ functions. The aim of this study was to analyse the effects of free polyamines, dialysate fluid components and dialysis fluid on protein and extracellular glycosaminoglycan synthesis in VERO cell cultures. METHODS: The dialysate fluid components were separated with a Sephadex G15 column and the cultures were analysed after incorporation of 3H-leucine and 3H-glucosamine. Cultures were run at pH 7.0 and pH 7.4. The glycosaminoglycan classes were separated with a DEAE column, and polyamines were determined by high-performance liquid chromatography. Proteins and single glycosaminoglycan classes were quantified by a scintillator. DNA gel electrophoresis was done to detect chromatin fragmentation. RESULTS: Dialysate contained putrescine, spermidine and spermine, chromatography showing four peaks; only peaks I and II indicated polyamines at respectively Da 5000 and 1500. Polyamines are therefore linked to different carriers. There was an increase of protein and glycosaminoglycan synthesis with dialysis fluid and polyamines, but inhibition with peak II or dialysate. DNA gel electrophoresis showed no chromatin fragmentation. Findings at pH 7.0 and 7.4 were similar. CONCLUSIONS: It would appear that in uremic patients polyamines are conjugated to protein carriers of different molecular weights with different biological actions. As polyamines and dialysis fluid affect changes in extracellular matrix, they could be related to physiological organ functions. However, these in vitro data must be considered with the appropriate limitations when we try to extrapolate them to the in vivo situation

Risk for chronic kidney disease in the general population: Italian reports for World Kidney Days 2007-2009

The prevalence of chronic kidney disease (CKD) has rapidlyincreased in recent decades in many countries, leading toconsistent economic implications. Considering the fact thatpatients surviving to CKD often develop end-stage renal disease,the number of patients requiring replacement therapyreached 169/million population (pmp) in Italy in 2004 and342 pmp in the Unites States. Furthermore, CKD weighs onpatients survival with a considerably increased cardiovascular(CV) morbidity and mortality