{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T01:42:00Z","timestamp":1747186920066,"version":"3.40.5"},"reference-count":23,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2017,12,20]],"date-time":"2017-12-20T00:00:00Z","timestamp":1513728000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["LUTS"],"published-print":{"date-parts":[[2019,4]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>Stress urinary incontinence (SUI) is a common disease condition in elderly women, suggesting that its etiology may be linked to aging. To investigate the hypothesis that urethral dysfunction and histopathological changes are possible contributors to SUI in elderly women, several parameters of urethral function, as well as histological parameters, were compared between young and aged rats.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Virgin female rats were examined at 3 different ages, namely 3, 12, and 24 months, corresponding to young, middle\u2010aged, and aged rats, respectively. Urethral function was assessed by measuring the leak point pressure (LPP), pudendal nerve stimulation (PNS)\u2010induced elevation in urethral pressure, and phenylephrine\u2010induced increase in urethral perfusion pressure (UPP). Histopathological assessments were performed following hematoxylin and eosin (HE), Masson's trichrome, and immunofluorescence staining of urethral tissue.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>LPP of aged rats was significantly reduced compared to that of both young and middle\u2010aged rats. PNS\u2010induced elevation in urethral pressure in aged rats was also significantly lower than that in young rats. In contrast, there were no significant differences in the phenylephrine\u2010induced increase in UPP between young and aged rats. Connective tissue area in the external urethral sphincter (EUS) layer was increased in aged rats, whereas the smooth muscle layer was histologically similar to that in young rats. The number of EUS fibers was significantly reduced in aged rats, whereas the cross\u2010sectional area of EUS fibers increased from differed compared with young rats.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>We have demonstrated age\u2010related changes in EUS function and morphology in the rat urethra, which are considered to be etiological risk factors for SUI in humans.<\/jats:p><\/jats:sec>","DOI":"10.1111\/luts.12209","type":"journal-article","created":{"date-parts":[[2017,12,20]],"date-time":"2017-12-20T06:51:08Z","timestamp":1513752668000},"source":"Crossref","is-referenced-by-count":5,"title":["Urethral function and histopathology in aged female rats as a stress urinary incontinence model"],"prefix":"10.1111","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9145-9869","authenticated-orcid":false,"given":"Hiroko","family":"Yanai\u2010Inamura","sequence":"first","affiliation":[{"name":"Drug Discovery Research, Astellas Pharma Inc.  Ibaraki Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ryosuke","family":"Ohashi","sequence":"additional","affiliation":[{"name":"Drug Discovery Research, Astellas Pharma Inc.  Ibaraki Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takao","family":"Ishigami","sequence":"additional","affiliation":[{"name":"Drug Discovery Research, Astellas Pharma Inc.  Ibaraki Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takuya","family":"Hirata","sequence":"additional","affiliation":[{"name":"Drug Discovery Research, Astellas Pharma Inc.  Ibaraki Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fumiyo","family":"Kumakura","sequence":"additional","affiliation":[{"name":"Drug Discovery Research, Astellas Pharma Inc.  Ibaraki Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Go","family":"Kono","sequence":"additional","affiliation":[{"name":"Drug Discovery Research, Astellas Pharma Inc.  Ibaraki Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masanori","family":"Yokono","sequence":"additional","affiliation":[{"name":"Drug Discovery Research, Astellas Pharma Inc.  Ibaraki Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masahiro","family":"Takeda","sequence":"additional","affiliation":[{"name":"Drug Discovery Research, Astellas Pharma Inc.  Ibaraki Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Keiji","family":"Miyata","sequence":"additional","affiliation":[{"name":"Drug Discovery Research, Astellas Pharma Inc.  Ibaraki Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2017,12,20]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/nau.10052"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1532-5415.1998.tb02469.x"},{"key":"e_1_2_6_4_1","first-page":"37","article-title":"Descriptive epidemiology of urinary incontinence in 3,100 women age 30\u201359","volume":"125","author":"Elving LB","year":"1989","journal-title":"Scand J Urol Nephrol Suppl"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1007\/s001920070021"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.3109\/00016348009154090"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1471-0528.1983.tb06764.x"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-5347(17)42512-2"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1067\/mob.2002.121089"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1067\/mob.2002.121090"},{"key":"e_1_2_6_11_1","unstructured":"SuminoY YoshikawaS MimataH YoshimuraN. Association of remodelling of extracellular matrix and urethral dysfunction inducing stress urinary incontinence in aged multiparous rats. (Abstract 221) Paper presented at: ICS 2013; August 26\u201330 2013; Barcelona.https:\/\/www.ics.org\/2013\/abstract\/221. 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