caa a22 4500 477045316 CHVBK 20180405111328.0 cr unu---uuuuu 170330e19960101xx s 000 0 eng 10.1007/BF01895103 doi (NATIONALLICENCE)springer-10.1007/BF01895103 Morphometry of the aging female rat urethra [Elektronische Daten] [B. Russell, M. Baumann, M. Heidkamp, A. Svanborg] Muscles in the limbs change with age, but the aging process of urethral muscles is unknown. Therefore, we compared smooth and striated muscle content in the female rat urethra in young (12 month) and old (32 month) animals, using immunochemical techniques. All the striated skeletal fibers at both ages contain slow myosin. Urethral diameter does not change with age (young, 1.44±0.08 mm; old, 1.46±0.10 mm,n=5), nor does the external sphincter width (young, 0.088±0.016 mm; old, 0.080±0.017 mm,n=5). Neither smooth nor skeletal muscle volume in the urethra is changed with age (skeletal: young, 20.72±2.94%; old, 19.95±2.35%. Smooth: young, 22.26±2.98%; old, 26.75±2.35%,n=5). The external striated sphincter is separate and distinct from the pubococcygeal region of the levator ani muscle, but is closely apposed to another layer of longitudinally oriented fibers into the vaginal musculature. The morphometric analysis shows no difference in urethral architecture in aging female rats. The International Urogynecology Journal, 1996 Aging nationallicence Incontinence nationallicence Rat nationallicence Smooth nationallicence Sphincter nationallicence Striated nationallicence Urethra nationallicence Russell B. Department of Physiology and Biophysics, University of Illinois at Chicago, 835 S. Wolcott Ave, Mail Code 901, 60612-7342, Chicago, Illinois, USA aut Baumann M. Department of Physiology and Biophysics, University of Illinois at Chicago, 835 S. Wolcott Ave, Mail Code 901, 60612-7342, Chicago, Illinois, USA aut Heidkamp M. Department of Physiology and Biophysics, University of Illinois at Chicago, 835 S. Wolcott Ave, Mail Code 901, 60612-7342, Chicago, Illinois, USA aut Svanborg A. Department of Physiology and Biophysics, University of Illinois at Chicago, 835 S. Wolcott Ave, Mail Code 901, 60612-7342, Chicago, Illinois, USA aut International Urogynecology Journal Springer-Verlag 7/1(1996-01-01), 30-36 0937-3462 7:1<30 1996 7 192 https://doi.org/10.1007/BF01895103 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01895103 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Russell B. Department of Physiology and Biophysics, University of Illinois at Chicago, 835 S. Wolcott Ave, Mail Code 901, 60612-7342, Chicago, Illinois, USA aut NATIONALLICENCE 700 1- Baumann M. Department of Physiology and Biophysics, University of Illinois at Chicago, 835 S. Wolcott Ave, Mail Code 901, 60612-7342, Chicago, Illinois, USA aut NATIONALLICENCE 700 1- Heidkamp M. Department of Physiology and Biophysics, University of Illinois at Chicago, 835 S. Wolcott Ave, Mail Code 901, 60612-7342, Chicago, Illinois, USA aut NATIONALLICENCE 700 1- Svanborg A. Department of Physiology and Biophysics, University of Illinois at Chicago, 835 S. Wolcott Ave, Mail Code 901, 60612-7342, Chicago, Illinois, USA aut NATIONALLICENCE 773 0- International Urogynecology Journal Springer-Verlag 7/1(1996-01-01), 30-36 0937-3462 7:1<30 1996 7 192 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer