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We have determined levels of glutathione (GSH), ATP, mitochondrial complex activity and apoptosis rate in proximal tubular cells (PTCs) exfoliated from urine in cystinotic (n=9) and control (n=9) children. Intracellular GSH was significantly depleted in cystinotic PTCs compared with controls (6.8 nmol GSH/mg protein vs 11.8 nmol GSH/mg protein; P<0.001), but there were no significant differences...
The renal Fanconi syndrome (FS) is characterised by generalised proximal tubular dysfunction. Cystinosis is the most common genetic cause of the FS and results from defective function of cystinosin, due to mutations of the CTNS gene leading to intralysosomal cystine accumulation. Despite these advances in our understanding of the molecular basis of cystinosis, the mechanisms of proximal tubular cell...
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