Sphingosine Kinase 1 urothelial expression is increased in patients with neurogenic detrusor overactivity

• Autor(a) principal: Ballouhey,Quentin
• Data de Publicação: 2015
• Outros Autores: Panicker,Jalesh N., Mazerolles,Catherine, Roumiguié,Mathieu, Zaidi,Falek, Rischmann,Pascal, Malavaud,Bernard, Gamé,Xavier
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: International Braz J Urol (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1677-55382015000601141
• topic: Urinary Bladder, Neurogenic; Urinary Bladder, Overactive; sphingosine kinase [Supplementary Concept]; Urothelium; Immunochemistry

Objectives: To evaluate the expression of sphingosine kinase 1 (SPK1) in the bladder wall in patients with neurogenic lower urinary tract dysfunction and its association with clinical, urodynamic and pathological features. Materials and Methods: The expression of SPK1 was studied in bladder wall specimens obtained from cystectomy using immunohistochemistry in ten patients with spinal cord injury (n=8) or multiple sclerosis (n=2) with urodynamically proven neuropathic bladder dysfunction, and in controls (n=5). Inflammation and fibrosis were analysed with histological criteria and SPK1 expression was determined by individual immunohistochemical staining. Results: Significant increased SPK1 urothelial immunoreactivity was shown in patients compared to control group (p=0.03). By contrast, SPK1 immunoreactivity in patients was significantly decreased in the sub-urothelium, muscles and nerves, p=0.02; 0.01 and 0.003, respectively. Patients with neurogenic detrusor overactivity (NDO) had higher SPK1 urothelium expression than those without any DO (p=0.04). Conclusions: SPK1 is expressed in the human bladder wall, specifically the urothelium, in bladder specimens from patients with NDO. The role of SPK1 in the pathophysiology of NDO needs further elucidation.