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Liquid chromatography-mass spectrometry identification of serum biomarkers for nocturia in aged men.

Abstract：

PURPOSE:We aimed to investigate the association between nocturia and serum metabolites identified using metabolomics analysis. METHODS:This study enrolled 66 men aged 65-80 years, recruited from the outpatient department of a university hospital. The participants were stratified as follows: Nocturia group [45 men with any total international prostate symptom score (IPSS) and an average of 3 nights ≥ 1.5 micturitions/night] and Control group (21 men with total IPSS < 8 and an average of 3 nights < 1.5 micturitions/night). The 24-h frequency-volume chart, IPSS, and Quality-of-Life questionnaire were used to evaluate micturition behavior. Serum metabolite profiles were obtained using liquid chromatography-mass spectrometry (LC-MS)-based metabolomics analysis and compared between the two groups using the unpaired t test. The relationship between serum metabolites and nocturia was determined using multivariable logistic regression analysis. RESULTS:There were no differences in background factors between the Nocturia and Control groups. In the IPSS, mean total scores in the Nocturia and Control groups were 12.4 and 4.0, respectively. On frequency-volume chart analysis, nocturnal urine volume and micturition frequency during daytime and nighttime were significantly higher in the Nocturia group. LC-MS highlighted 13 serum metabolites as potential biomarkers of nocturia. On multivariate analysis, increased levels of palmitoylethanolamide, 4-hydroxydocosahexaenoic acid, 9-hydroxyoctadecadienoic acid, 20-hydroxydocosahexaenoic acid, 13-hydroxyoctadecadienoic acid, arachidonoylethanolamide, eicosapentaenoic acid, 12-hydroxy-eicosatetraenoic acid, and arachidonic acid were associated with nocturia. CONCLUSIONS:In aged men, the pathogenesis of nocturia involves abnormal metabolism in several signaling pathways involving omega-3 and omega-6 polyunsaturated fatty acids, as well as endocannabinoids.

journal_name

World J Urol

journal_title

World journal of urology

authors

Kira S,Mitsui T,Miyamoto T,Ihara T,Nakagomi H,Hashimoto Y,Takamatsu H,Tanahashi M,Takeda M,Sawada N,Andersson KE,Takeda M

doi

10.1007/s00345-019-02647-4

subject

Has Abstract

pub_date

2019-10-01 00:00:00

pages

2199-2205

issue

10

eissn

0724-4983

issn

1433-8726

pii

10.1007/s00345-019-02647-4

journal_volume

37

pub_type

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