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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of urology 5 (1998), S. 0 
    ISSN: 1442-2042
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background The degree of bladder outlet obstruction (BOO) in benign prostatic hyperplasia (BPH) is most accurately quantified by pressure flow studies (PFS), although these studies are more invasive and complicated than conventional tests. We examined how precisely conventional tests predicted the PFS-assessed degree of BOO. Methods The study population consisted of 232 BPH patients who had undergone routine conventional tests and PFS. Correlation of the conventional test results with the degree of BOO assessed by PFS was examined by Spearman's correlation coefficients. Regression and subgroup analyses were performed to predict the degree of BOO using the conventional test results as the explanatory variables. Results The degree of BOO correlated with prostate volume, the degree of endoscopic obstruction, and to a lesser extent, with the maximum flow rate (Qmax) and age. The predictability of conventional tests alone, or in combination, for BOO, was approximately 60% to 70%, which is not acceptable for investigational use. However, almost all patients with a prostate volume larger than 30 mL, or with severe obstruction on urethroscopic findings, had an obstructed bladder outlet. Conclusion PFS is mandatory when the precise evaluation of the degree of BOO is required, and patients are highly likely to have an outlet obstruction when they have a prostate larger than 30 mL, or severely obstructed posterior urethra on endoscopy.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Melbourne, Australia : Blackwell Science Pty
    International journal of urology 12 (2005), S. 0 
    ISSN: 1442-2042
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract  Aim: To evaluate the long-term safety, tolerability and efficacy of extended-release (ER) tolterodine in Japanese patients completing 12-week treatment in a randomized, double-blind trial comparing tolterodine ER 4 mg once daily, oxybutynin 3 mg three times daily or placebo in patients with overactive bladder.Methods: Of 293 Japanese patients completing the 12-week study, 188 continued in the open-label trial and received tolterodine ER 4 mg once daily for 12 months, irrespective of previous treatment. The primary objective was to assess the safety of tolterodine ER for up to 52 weeks of treatment and at post-treatment follow-up. Secondary endpoints included changes in micturition diary variables, patient perception of bladder condition and urgency and treatment benefit.Results: Overall, 77% of patients completed 12 months of open-label treatment. Tolterodine ER was well tolerated and the most common adverse event was dry mouth (33.5%). In general, there was no increase in adverse event frequency with long-term treatment compared with short-term treatment. The efficacy of tolterodine ER was maintained over the 12-month period. The complete analysis showed a median reduction in incontinence  episodes/week (−92.9%; mean  reduction, −77.2%), a mean reduction in micturitions/24 h (−21.3%) and a mean increase in volume voided per micturition (19.6%). Of patients completing the 12-month study, 78.6% reported improvement in patient perception of bladder condition, 52.4% reported improvement in perception of urgency and 89.7% reported treatment benefit.Conclusions: Favorable safety, tolerability and efficacy of once-daily tolterodine ER was maintained over 12 months in a Japanese overactive bladder patient population.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Melbourne, Australia : Blackwell Science Pty
    International journal of urology 10 (2003), S. 0 
    ISSN: 1442-2042
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1912
    Keywords: Key words Z-350 ; α1-Adrenoceptors ; Steroid ; 5α-reductase ; Lower urinary tract ; Benign prostatic ; hyperplasia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effects of Z-350, (S)-4-[3-(4-{1-(4-methylphenyl)-3-[4-(2-methoxyphenyl)piperazine-1-yl]propoxy} benzoyl)indole-1-yl]butyric acid hydrochloride, a newly synthesized compound possessing α1-adrenoceptor antagonistic and steroid 5α-reductase inhibitory actions, were studied in vitro. In functional experiments, Z-350 shifted the concentration/response curve for the phenylephrine-induced contraction of rabbit prostate, urethra and aorta to the right with pA2 values of 8.04, 7.57 and 7.13, respectively. The binding affinity of Z-350 for α1-adrenoceptors in rabbit prostate, urethra and aorta were estimated by the displacement of [3H]prazosin. The pK i values for this action of Z-350 were 7.53, 7.95 and 7.62 for the prostate, urethra and aorta, respectively. α1-Adrenoceptor subtype selectivities were studied in the submaxillary gland (α1A) and liver (α1B) of rat. Z-350 inhibited the specific binding of [3H]prazosin to α1A and α1B-adrenoceptors with pK i values of 7.82 and 7.29, respectively. Z-350 inhibited rat prostatic steroid 5α-reductase non-competitively with a pIC50 of 8.42. These results indicate that Z-350 is a α1-adrenoceptor antagonist and is a steroid 5α-reductase inhibitor. It is expected that Z-350 will be a candidate drug for the treatment of benign prostatic hyperplasia.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1573-6903
    Keywords: Calcium antagonists ; efonidipine hydrochloride(NZ-105) ; brain mitochondria ; swelling ; lipid peroxidation ; arachidonic acid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Inhibitory effects of calcium antagonists, efonidipine (NZ-105), nicardipine, nifedipine, nimodipine and flunarizine, on mitochondrial swelling induced by lipid peroxidation or arachidonic acid in the rat brain in vitro were investigated. Mitochondrial swelling and lipid peroxidation induced by FeSO4 and ascorbic acid system showed a close and significant relationship. Mitochondrial swelling and lipid peroxidation induced by FeSO4 and ascorbic acid were inhibited by all of calcium antagonists tested. The order of inhibition was: flunarizine〉nicardipine〉efonidipine〉nimodipine〉nifedipine. This result suggests that calcium antagonists tested have antiperoxidant activities resulting in protection of mitochondrial membrane damage and that each moiety of these structures would play an important role in appearance of anti-peroxidant activities. Furthermore, flunarizine and efonidipine inhibited mitochondrial swelling induced by arachidonic acid, which is not associated with lipid peroxidation. In contrast, nicardipine, nifedipine, and nimodipine did not inhibited this swelling. It is possible that flunarizine and efonidipine could directly interact with mitochondrial membrane. In conclusion, it is capable that calcium antagonists tested may protect from the membrane damage induced by lipid peroxidation and that flunarizine and efonidipine could stabilize the membrane, which is attributed to a direct interaction with the membrane.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1573-6903
    Keywords: El mice ; citalopram ; serotonin ; dopamine ; kynurenine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Serotonin (5-HT) plays an important role in the seizures of El mice since the seizure threshold of El mice correlates with the 5-HT concentration in the central nervous system. In this study, the anticonvulsant effect of a 5-HT reuptake blocker, citalopram, was evaluated behaviorally and biochemically. El mouse convulsions were inhibited by oral administration of citalopram for 2 weeks. Citalopram increased tryptophan and tyrosine amounts, and decreased the 5-HT, 5-hydroxy-indoleacetic acid, kynurenine, and dopamine amounts in the brain. These findings show that citalopram depresses monoaminergic metabolism. Given the known convulsant effect of kynurenine, it is suggested that its decrease by citalopram may involve attenuation of El mice seizures.
    Type of Medium: Electronic Resource
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