Abstract:
OBJECTIVE:To develop and validate an in vitro method suitable for the quantitative investigation of the growth of calcium oxalate stones through to a clinically significant size. MATERIALS AND METHODS:Small fragments of calcium oxalate calculi were suspended in a mixed suspension/mixed product removal crystalliser supplied with artificial urine supersaturated with calcium oxalate. The fragments were weighed at regular intervals until they reached approximately equal 500 mg. The results were plotted as weight against time and fitted to equations corresponding to constant increase in diameter, surface area-controlled and constant-deposition growth patterns. The choice of the most appropriate model was based on the squared regression coefficient (r2). RESULTS:Eight fragments (2-6 mm in diameter) were grown to approximately 10 mm in diameter over periods from 137 to 369 h. Seven of the growth curves were best-fitted (r2 > or = 0.988) by the equation w = kt(3/2) + c, where w is the weight, k is a growth constant, t is the time and c is a constant approximating to the initial weight. This corresponds to a surface area-dependent mechanism. CONCLUSIONS:The growth of these small fragments to a clinically significant size accelerated throughout the experimental period in a way which was consistent with a surface area-dependent mechanism. We have developed a resilient model suitable for studying the kinetics of calcium oxalate stone growth in vitro.
journal_name
BJU Intjournal_title
BJU internationalauthors
Ananth K,Kavanagh JP,Walton RC,Rao PNdoi
10.1046/j.1464-410x.2002.03027.xkeywords:
subject
Has Abstractpub_date
2002-12-01 00:00:00pages
939-44issue
9eissn
1464-4096issn
1464-410Xpii
03027journal_volume
90pub_type
杂志文章abstract:OBJECTIVE:To evaluate long-term recurrence-free and progression-free survival of noninvasive bladder tumours (stage Ta), and the significance of simple risk factors, including concomitant epithelial dysplasia. PATIENTS AND METHODS:The study included 217 patients with primary noninvasive bladder tumour (stage Ta) who w...
journal_title:BJU international
pub_type: 杂志文章
doi:10.1046/j.1464-410x.2000.00547.x
更新日期:2000-05-01 00:00:00
abstract::Men receiving androgen-deprivation therapy will in time develop metastatic castrate-resistant prostate cancer (mCRPC). Whilst effective treatment options for mCRPC have traditionally been limited, new agents are becoming available. Since 2010, the number and class of agents available to treat mCRPC has increased drama...
journal_title:BJU international
pub_type: 杂志文章,评审
doi:10.1111/bju.12736
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abstract:OBJECTIVE:To evaluate the insertion of a urethral sling at the time of radical prostatectomy (RP) in men at high risk of urinary incontinence after RP. PATIENTS AND METHODS:Between 1998 and 2000, 49 of 871 men undergoing RP at The University of Texas M.D. Anderson Cancer Center, were identified as at risk of urinary i...
journal_title:BJU international
pub_type: 杂志文章
doi:10.1111/j.1464-410X.2006.06220.x
更新日期:2006-08-01 00:00:00
abstract::Category III chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) is the most commonly diagnosed prostatitis syndrome. CP/CPPS is characterized by lower urinary tract symptoms (LUTS) of which pain (particularly perineal pain and pain on ejaculation) and dysfunctional voiding cause the greatest morbidity and poor...
journal_title:BJU international
pub_type: 杂志文章,meta分析,评审
doi:10.1111/j.1464-410X.2008.07496.x
更新日期:2008-03-01 00:00:00
abstract:OBJECTIVE:To develop a generator for high-intensity focused ultrasound (HIFU, a method of delivering ultrasonic energy with resultant heat and tissue destruction to a tight focus at a selected depth within the body), designed for extracorporeal coupling to allow various parenchymal organs to be treated. MATERIAL AND M...
journal_title:BJU international
pub_type: 杂志文章
doi:10.1046/j.1464-410x.2002.02848.x
更新日期:2002-08-01 00:00:00
abstract::• Synthetic mid-urethral slings (MUSs) are considered the first choice surgical procedure for stress urinary incontinence. Recent publications have raised concerns about the efficacy of third generation single-incision mini-slings. The present paper is a systematic review of studies reporting 12-month outcomes after t...
journal_title:BJU international
pub_type: 杂志文章,评审
doi:10.1111/j.1464-410X.2011.10333.x
更新日期:2011-09-01 00:00:00
abstract:OBJECTIVES:To describe the step-by-step learning curve of the holmium laser enucleation of the prostate (HoLEP) surgical technique. SUBJECTS/PATIENTS AND METHODS:A prospective, multicentre observational study was conducted, involving surgeons experienced in transurethral resection of the prostate and open prostatectom...
journal_title:BJU international
pub_type: 杂志文章,多中心研究
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更新日期:2016-03-01 00:00:00
abstract:OBJECTIVE:To examine differences in gene expression levels between renal cell carcinoma (RCC) tissue and 'normal' appearing renal tissue using a commercially available DNA macroarray. MATERIALS AND METHODS:Tissue was obtained from 47 consecutive radical nephrectomies, 29 of which were eligible. DNA macroarrays were an...
journal_title:BJU international
pub_type: 杂志文章
doi:10.1111/j.1464-410X.2006.06209.x
更新日期:2006-07-01 00:00:00
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journal_title:BJU international
pub_type: 杂志文章
doi:10.1111/j.1464-410X.2005.05779.x
更新日期:2005-11-01 00:00:00
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journal_title:BJU international
pub_type: 杂志文章
doi:10.1111/j.1464-410X.2005.05674.x
更新日期:2005-09-01 00:00:00
abstract:OBJECTIVES:To examine patterns of care among women with urogenital fistula treated in the English National Health Service (NHS) between 2000 and 2009. To assess whether failure of repair was associated with hospital or surgeon workload. PATIENTS AND METHODS:We conducted a retrospective cohort study using data from Hos...
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pub_type: 杂志文章,多中心研究
doi:10.1111/j.1464-410X.2012.11483.x
更新日期:2013-04-01 00:00:00
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journal_title:BJU international
pub_type: 杂志文章,评审
doi:10.1111/bju.15105
更新日期:2020-08-01 00:00:00
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journal_title:BJU international
pub_type: 杂志文章
doi:10.1111/j.1464-410X.2005.05408.x
更新日期:2005-04-01 00:00:00
abstract:OBJECTIVE:To investigate possible differences between Italian and Swedish men in health-related quality of life (HRQL) after cystectomy and orthotopic bladder substitution for bladder cancer. PATIENTS AND METHODS:Thirty-three men in Padua, Italy and 33 in Lund, Sweden were assessed after respective mean postoperative ...
journal_title:BJU international
pub_type: 杂志文章
doi:10.1046/j.1464-410x.2000.00416.x
更新日期:2000-01-01 00:00:00
abstract:UNLABELLED:What's known on the subject? and What does the study add? Percutaneous renal cryoablation is a safe and effective treatment for patients with small renal masses, who are poor surgical candidates. Oncological outcomes from previous percutaneous ablation studies are difficult to interpret because of the large ...
journal_title:BJU international
pub_type: 杂志文章
doi:10.1111/j.1464-410X.2012.11230.x
更新日期:2012-12-01 00:00:00
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journal_title:BJU international
pub_type: 杂志文章
doi:10.1111/bju.15194
更新日期:2020-08-03 00:00:00
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journal_title:BJU international
pub_type: 杂志文章,meta分析
doi:10.1111/j.1464-410X.2004.05255.x
更新日期:2005-01-01 00:00:00
abstract::To compare the incidence of infective complications after transrectal ultrasonography (TRUS)-guided biopsy with either empirical fluoroquinolone or culture-based targeted antimicrobial prophylaxis, and the prevalence of fluoroquinolone resistance (FQ-R) in men undergoing prostate biopsy. A systematic review of the lit...
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pub_type: 杂志文章,评审
doi:10.1111/bju.13402
更新日期:2016-05-01 00:00:00
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pub_type: 杂志文章
doi:10.1111/j.1464-410X.2006.06211.x
更新日期:2006-07-01 00:00:00
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pub_type: 杂志文章
doi:10.1111/j.1464-410X.2007.07068.x
更新日期:2007-11-01 00:00:00
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pub_type: 杂志文章
doi:10.1111/bju.13413
更新日期:2016-07-01 00:00:00
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journal_title:BJU international
pub_type: 杂志文章
doi:10.1111/j.1464-410X.2006.06678.x
更新日期:2007-03-01 00:00:00
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journal_title:BJU international
pub_type: 杂志文章
doi:10.1111/j.1464-410X.2008.07606.x
更新日期:2008-09-01 00:00:00
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journal_title:BJU international
pub_type: 杂志文章
doi:10.1111/j.1464-410X.2006.05967.x
更新日期:2006-03-01 00:00:00
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journal_title:BJU international
pub_type: 杂志文章,评审
doi:10.1111/j.1464-410X.2007.07386.x
更新日期:2008-06-01 00:00:00
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journal_title:BJU international
pub_type: 杂志文章
doi:10.1111/j.1464-410X.2008.08208.x
更新日期:2009-05-01 00:00:00
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journal_title:BJU international
pub_type: 杂志文章
doi:10.1111/j.1464-410X.2005.05586.x
更新日期:2005-07-01 00:00:00
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journal_title:BJU international
pub_type: 杂志文章
doi:10.1111/j.1464-410X.2007.07115.x
更新日期:2007-11-01 00:00:00
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journal_title:BJU international
pub_type: 杂志文章
doi:10.1111/j.1464-410X.2004.04998.x
更新日期:2004-09-01 00:00:00
abstract:OBJECTIVE:To assess the impact of histotripsy treatment parameters (pulse number and pulse-repetition frequency [PRF]) on the efficiency of histotripsy induced homogenisation of the prostatic urethra. MATERIALS AND METHODS:In all, 34 transabdominal prostate histotripsy treatments were applied along a perpendicular pla...
journal_title:BJU international
pub_type: 杂志文章
doi:10.1111/bju.12333
更新日期:2014-03-01 00:00:00