Development of novel and non-invasive diagnostic markers for lower urinary tract symptoms using urothelial cells in voided urine.

Abstract:

OBJECTIVES:We evaluated the association between lower urinary tract symptoms (LUTS) and the expression of connexin (Cx) and transient receptor potential (TRP) channel on urothelial cells non-invasively collected from voided urine in humans. METHODS:A total of 55 patients (36 males and 19 females, median age: 71 years old), who were followed up at University of Yamanashi Hospital, were enrolled in the present study. Urothelial cells were collected from voided urine of patients, and the mRNA expression of each subtype of Cxs and TRP channels was measured using quantitive real-time reverse transcription polymerase chain reaction. We then analyzed the correlation between the expression of Cxs and TRP channels and symptom scores in International Prostate Symptom Scoreand Overactive Bladder Symptom Score, in addition to Interstitial Cystitis Symptom Index (ICSI) from only interstitial cystitis (IC) patients. RESULTS:Non-adjusted statistical procedure using Spearman's rank-correlation showed that there were significant correlations between the following expressions and symptom scores; (positive correlations) Cx26 versus urgency score, Cx40 versus nocturia, TRPM2 versus intermittency, TRPV1 versus urge incontinence, (negative correlation) Cx40 versus intermittency, TRPM7 versus pollakisuria. However, a multiple comparison adjustment using Bonferroni correction showed that only Cx40 had a trend of correlation with nocturia in ICSI. CONCLUSIONS:The expressions of Cxs and TRP channels on urothelial cells in voided urine could be related to LUTS. Further analysis of urothelial cells in voided urine has the potential to reveal the mechanism of the LUTS and develop new markers with non-invasive methods.

journal_name

Neurourol Urodyn

authors

Shimura H,Mitsui T,Tsuchiya S,Miyamoto T,Ihara T,Kira S,Nakagomi H,Sawada N,Imai Y,Mochizuki T,Takeda M

doi

10.1002/nau.23436

subject

Has Abstract

pub_date

2018-03-01 00:00:00

pages

1137-1143

issue

3

eissn

0733-2467

issn

1520-6777

journal_volume

37

pub_type

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