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

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 spe...

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Detalles Bibliográficos
Autores principales: Ballouhey, Quentin, Panicker, Jalesh N., Mazerolles, Catherine, Roumiguié, Mathieu, Zaidi, Falek, Rischmann, Pascal, Malavaud, Bernard, Gamé, Xavier
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Sociedade Brasileira de Urologia 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4756940/
https://www.ncbi.nlm.nih.gov/pubmed/26742972
http://dx.doi.org/10.1590/S1677-5538.IBJU.2014.0676
Descripción
Sumario: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.