Abstract:
OBJECTIVES:To investigate the pathophysiology of interstitial cystitis (IC), we examined urinary levels and urothelial expression of human orthologue of pancreatitis-associated protein (PAP) III, namely, hepatocarcinoma-intestine-pancreas (HIP)/PAP, in patients with IC. We have previously shown that PAP III is expressed with increased frequency in the bladder urothelium in a rat cystitis model (Takahara Y, et al. J Urol. 2008;179:1603-1609). METHODS:HIP/PAP levels in the urine from patients with IC were measured by enzyme-linked immunosorbent assay, and HIP/PAP expression in the bladder tissues was assessed by immunohistochemical study. RESULTS:The median concentration of urinary HIP/PAP was significantly higher in patients with IC than in controls (13.67 vs 1.86 pg/mL urine, respectively, P <.0001, with Mann-Whitney U test). HIP/PAP immunoreactivity was observed in the urothelium of 88.2% of patients with IC (15/17) and in 5.9% of bladder tissues of controls (1/17). Urinary HIP/PAP levels in patients with IC were positively correlated with urinary frequency and bladder pain (r = 0.429, 0.443) and inversely correlated with mean voided urine volume (r = -0.488). CONCLUSIONS:Urinary HIP/PAP levels were significantly higher in IC patients and the apparent HIP/PAP expression in the bladder urothelium was more frequently observed among IC patients. The involvement of HIP/PAP in the pathophysiology of IC is suggested.
journal_name
Urologyjournal_title
Urologyauthors
Makino T,Kawashima H,Konishi H,Nakatani T,Kiyama Hdoi
10.1016/j.urology.2009.05.044subject
Has Abstractpub_date
2010-04-01 00:00:00pages
933-7issue
4eissn
0090-4295issn
1527-9995pii
S0090-4295(09)00705-5journal_volume
75pub_type
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