scholarly journals Fluid dynamic assessment of the lower urinary tract: Exploratory research to observe vorticity in the prostatic urethra after transurethral enucleation

2019 ◽  
Vol 26 (8) ◽  
pp. 853-854 ◽  
Author(s):  
Tomonori Minagawa ◽  
Teruyuki Ogawa ◽  
Osamu Ishizuka
Keyword(s):  
Urinary Tract ◽  
Lower Urinary Tract ◽  
Fluid Dynamic ◽  
Dynamic Assessment ◽  
Prostatic Urethra ◽  
Exploratory Research ◽  
Lower Urinary

Doxazosin-induced up-regulation of α1A-adrenoceptor mRNA in the rat lower urinary tract

2004 ◽  
Vol 82 (10) ◽  
pp. 872-878 ◽  
Author(s):  
Makoto Yono ◽  
Harris E Foster, Jr. ◽  
David Shin ◽  
Wataru Takahashi ◽  
Mehdi Pouresmail ◽  
...  
Keyword(s):  
Urinary Tract ◽  
Lower Urinary Tract ◽  
Chronic Administration ◽  
Prostatic Urethra ◽  
Mrna Levels ◽  
Bladder Base ◽  
Reverse Transcription Pcr ◽  
Bladder Dome ◽  
Rat Bladder ◽  
Lower Urinary

α1-adrenoceptor (AR) antagonists can provide effective treatment of symptoms caused by benign prostatic hyperplasia. However, their mechanisms of action have not been fully elucidated. We previously reported that chronic administration of doxazosin causes an up-regulation in the mRNA expression of all three α1-AR subtypes in the rat prostate. As α1-AR antagonists might also affect the properties of α1-ARs in the lower urinary tract, we examined the effects of doxazosin (2 or 4 mg/kg daily subcutaneously, supplemented with 4 mg/kg daily orally for 8 or 12 weeks) on α1-AR subtype mRNAs in the rat bladder dome, bladder base, and urethra using real-time reverse transcription PCR. Rats that received the highest doses of doxazosin had significantly heavier bladder base and prostatic urethra than controls. PCR data showed that all three α1-AR subtypes were expressed in all tissues studied. Doxazosin treatment caused an up-regulation in the mRNA levels of α1A-AR in the rat bladder base and prostatic urethra, indicating that chronic doxazosin treatment may cause an alteration in the properties of α1A-AR subtype mRNA in these two areas. Furthermore, the heavier bladder base and prostatic urethra in the doxazosin-treated rats suggest that α1-AR antagonist treatment might also influence the growth process in these areas of the rat lower urinary tract.Key words: α1-adrenoceptor, doxazosin, bladder, urethra.

1276: Lower Urinary Tract Symptoms: Local Ischemia Assessed by Sonographic Findings and Correlated to Impaired Quality of Life

2006 ◽  
Vol 175 (4S) ◽  
pp. 410-411
Author(s):  
Germar M. Pinggera ◽  
Michael Mitterberger ◽  
Leo Pallwein ◽  
Peter Rehder ◽  
Ferdinand Frauscher ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Urinary Tract ◽  
Lower Urinary Tract Symptoms ◽  
Lower Urinary Tract ◽  
Local Ischemia ◽  
Urinary Tract Symptoms ◽  
Impaired Quality ◽  
Lower Urinary
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