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Lower urinary tract obstruction

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https://www.readbyqxmd.com/read/28328190/effects-of-nitric-oxide-inhibitors-in-mice-with-bladder-outlet-obstruction
#1
Marcy Lancia Pereira, Carlos Arturo Levi D'ancona, Julio Alejandro Rojas-Moscoso, Antonio Celso Saragossa Ramos, Fabiola Zakia Monica, Edson Antunes
PURPOSE: To investigate the lower urinary tract changes in mice treated with L-NAME, a non-selective competitive inhibitor of nitric oxide synthase (NOS), or aminoguanidine, a competitive inhibitor of inducible nitric oxide synthase (iNOS), after 5 weeks of partial bladder outlet obstruction (BOO), in order to evaluate the role of constitutive and non-constitutive NOS in the pathogenesis of this experimental condition. MATERIALS AND METHODS: C57BL6 male mice were partially obstructed and randomly allocated into 6 groups: Sham, Sham + L-NAME, Sham + aminoguanidine, BOO, BOO + L-NAME and BOO + aminoguanidine...
March 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28322900/structural-variations-of-the-prostatic-urethra-within-the-prostate-predict-the-severities-of-obstructive-symptoms-a-prospective-multicenter-observational-study
#2
Young Hwii Ko, Tae-Hwan Kim, Phil Hyun Song, Byung Hoon Kim, Bum Soo Kim, Ki Ho Kim, Jaeho Cho
OBJECTIVE: To describe distinctive morphologic variations of the prostate associated with the prostatic urethra, and to determine whether structural changes of the urethra within the prostate resulting from gland enlargement, rather than prostrate volume itself, lead to male lower urinary tract symptom (LUTS). MATERIALS AND METHODS: After standardizing measurements, seven ultrasonography determined variables, that is, prostate volume, transitional zone volume, transitional zone to total volume ratio, presence of intraprostatic protrusion, prostatic urethral angle, prostatic urethral length (PUL), and PUL-to-volume ratio (rPUL), were obtained prospectively in 293 men that had not taken LUTS medication during the 3 months prior to initial visits...
March 17, 2017: Urology
https://www.readbyqxmd.com/read/28317615/routine-screening-examinations-in-attendance-of-cats-with-obstructive-lower-urinary-tract-disease
#3
Amanda Marin Neri, Luiz Henrique de Araújo Machado, Priscylla Tatiana Chalfun Guimarães Okamoto, Maurício Gianfrancesco Filippi, Regina Kiomi Takahira, Alessandra Melchert, Maria Lúcia Gomes Lourenço
This study evaluates the clinical findings obtained in routine screening examinations in cats with obstructive feline lower urinary tract disease at the time of service. Twenty-six cats with urethral obstruction were assessed by physical examination, blood pressure, electrocardiogram, and laboratory tests. Cats with signs of obstruction less than 36 hours before the service were in a state of alert, with body temperature and heart rate higher compared with cats in lethargy and stupor, obstructed up to 36 hours...
December 2016: Topics in Companion Animal Medicine
https://www.readbyqxmd.com/read/28315343/inhibition-of-agonist-induced-smooth-muscle-contraction-by-picotamide-in-the-male-human-lower-urinary-tract-outflow-region
#4
Martin Hennenberg, Alexander Tamalunas, Yiming Wang, Patrick Keller, Melanie Schott, Frank Strittmatter, Annika Herlemann, Qingfeng Yu, Beata Rutz, Anna Ciotkowska, Christian G Stief, Christian Gratzke
Male lower urinary tract symptoms (LUTS) due to bladder outlet obstruction are characterized by abnormal smooth muscle contractions in the lower urinary tract. Alpha1-adrenoceptor antagonists may induce smooth muscle relaxation in the outflow region and represent the current goldstandard of medical treatment. However, results may be unsatisfactory or inadequate. Apart from α1-adrenoceptor agonists, smooth muscle contraction in the outflow region may be induced by thromboxane A2 (TXA2), endothelins, or muscarinic receptor agonists...
March 14, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28303850/incidence-and-risk-factors-of-de-novo-stress-urinary-incontinence-after-pelvic-floor-reconstruction-a-nested-case-control-study
#5
Shi-Yan Wang, Ting-Ting Cao, Run-Zhi Wang, Xin Yang, Xiu-Li Sun, Jian-Liu Wang
BACKGROUND: Some patients with pelvic organ prolapse may suffer from lower urinary tract symptoms (LUTS), especially stress urinary incontinence (SUI) named de novo SUI after pelvic floor reconstruction. This study aimed to investigate the incidence and risk factors of de novo SUI. METHODS: This is a nested case-control study of 533 patients who underwent pelvic floor reconstruction due to pelvic organ prolapse (POP) at the Department of Gynecology in Peking University People's Hospital from January 2011 to March 2013...
March 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28301527/associations-between-the-severity-of-obstructive-lower-urinary-tract-symptoms-and-care-seeking-behavior-in-rural-africa-a-cross-sectional-survey-from-uganda
#6
Lynn Stothers, Andrew J Macnab, Francis Bajunirwe, Sharif Mutabazi, Jonathan Berkowitz
STUDY TYPE: A cross sectional survey. BACKGROUND: Global estimates indicate that by 2018 2.3 billion individuals worldwide will suffer from lower urinary tract symptoms (LUTS), with 1.1 billion having LUTS related to bladder outlet obstruction (BOO). Left untreated BOO in men causes irreversible changes to the urinary tract leading to urinary retention, the need for catheterization, renal failure and even death. Estimates suggest that Africa will be one of the continents with the greatest increase in (LUTS) by 2018 however direct measures in Africa are lacking...
2017: PloS One
https://www.readbyqxmd.com/read/28298357/how-important-is-the-%C3%AE-1-adrenoceptor-in-primate-and-rodent-proximal-urethra-sex-differences-in-the-contribution-of-%C3%AE-1-adrenoceptor-to-urethral-contractility
#7
Eduardo C Alexandre, Mariana G de Oliveira, Rafael Campos, Luiz Ricardo A Kiguti, Fabiano B Calmasini, Fábio H Silva, Andrew D Grant, Naoki Yoshimura, Edson Antunes
Urethral smooth muscle (USM) contributes to urinary continence by contracting during the urine storage phase, which is mainly mediated by activation of post-junctional α1-adrenoceptors. Males and females show differences in the functioning of the lower urinary tract and the most common urinary tract symptoms (LUTS). LUTS in men typically occur in association with bladder outlet obstruction, whereas in women urinary urge-incontinence symptoms are more common. Therefore, this study aimed to evaluate sex differences in α1-adrenoceptor subtype expression and their importance in proximal urethra contraction in mouse (C57BL6/J) and marmoset (Callithrix jacchus)...
March 15, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28289208/specific-deletion-of-lkb1-stk11-in-the-m%C3%A3-llerian-duct-mesenchyme-drives-hyperplasia-of-the-periurethral-stroma-and-tumorigenesis-in-male-mice
#8
Jitu W George, Amanda L Patterson, Pradeep S Tanwar, André Kajdacsy-Balla, Gail S Prins, Jose M Teixeira
Nearly all older men will experience lower urinary tract symptoms associated with benign prostatic hyperplasia (BPH), the etiology of which is not well understood. We have generated Stk11(CKO) mice by conditional deletion of the liver kinase B1 (LKB1) tumor suppressor gene, Stk11 (serine threonine kinase 11), in the fetal Müllerian duct mesenchyme (MDM), the caudal remnant of which is thought to be assimilated by the urogenital sinus primordial mesenchyme in males during fetal development. We show that MDM cells contribute to the postnatal stromal cells at the dorsal aspect of the prostatic urethra by lineage tracing...
March 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28285780/-validation-of-visual-prostate-symptom-score-vpss-in-the-evaluation-of-lower-urinary-tract-symptoms-associated-with-benign-prostatic-hyperplasia-550-patients
#9
A Descazeaud, P Coloby, J L Davin, A De La Taille, G Karsenty, G Kouri, D Rossi, J C Pouteau, M Zerbib
OBJECTIVES: Our objective was to validate the VPSS (visual prostatic symptom score) score in the French language for the identification and monitoring of BPH-related LUTS in urological practice. METHODS: A prospective observational survey was carried out between September the 15th 2014 and July the 30th 2015 in urology practices. The first 4 consecutive patients aged over 60 years, with BPH-related LUTS requiring prescription of an alpha-blocker, were enrolled. We translated a "visual prostatic symptom score" (VPSS) into French and adapted it slightly...
March 9, 2017: Progrès en Urologie
https://www.readbyqxmd.com/read/28285536/comparison-of-short-term-outcomes-between-laparoscopic-assisted-and-open-complete-mesocolic-excision-cme-for-the-treatment-of-transverse-colon-cancer
#10
COMPARATIVE STUDY
Yong Wang, Chuan Zhang, Yi-Fei Feng, Zan Fu, Yue-Ming Sun
BACKGROUND: Colorectal cancer (CRC) is the third most common cancer worldwide. Although laparoscopic-assisted complete mesocolic excision (LCME) is a superior treatment, there are few studies available on it owe to the low incidence and technical difficulty of LCME in transverse colon cancer. METHODS: The clinical data of 78 patients with transverse colon cancer who were treated by LCME and open complete mesocolic excision (OCME) were retrospectively analyzed. A total of 39 cases had been treated by LCME, compared with 39 cases treated by OCME...
February 2017: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/28278526/-acute-kidney-failure-due-to-urachal-cyst
#11
I Klaassen, M Wolf, M J Kemper, S Riechardt, M Boettcher, J Herrmann, D Singer
A 34-year-old para V woman was referred to our centre at 35+1 weeks of gestation for an assumed fetal malformation with prenatal renal impairment and anhydramnios. Prenatal ultrasound demonstrated unilateral renal agenesis; the bladder was not detectable. The baby was born by caesarian section at 36+2 weeks of gestation because of placental insufficiency. Postnatal adaptation was uneventful, but the newborn presented external stigmas of trisomy 21 and progressive renal impairment with anuria. Nevertheless, the postnatal ultrasound showed two enlarged kidneys in loco typico with impaired perfusion but without signs of malformations...
March 9, 2017: Zeitschrift Für Geburtshilfe und Neonatologie
https://www.readbyqxmd.com/read/28267055/overactive-bladder-syndrome-and-lower-urinary-tract-symptoms-after-prostate-cancer-treatment
#12
Suzanne Biers, Karl-Dietrich Sievert, Nikesh Thiruchelvam
PURPOSE OF REVIEW: To assess the contemporary literature on the prevalence, cause and management of lower urinary tract symptoms (LUTS) and bladder overactivity following treatment of prostate cancer with radical surgery, radiotherapy and minimally invasive therapies for localized prostate cancer, including cryotherapy and high-intensity focused ultrasound (HIFU). RECENT FINDINGS: Generally, the highest risk of urinary incontinence is after open radical prostatectomy (7-40%), although not all contemporary studies demonstrate a difference between open and laparoscopic techniques...
March 4, 2017: Current Opinion in Urology
https://www.readbyqxmd.com/read/28265323/bladder-and-bowel-dysfunction-in-children-an-update-on-the-diagnosis-and-treatment-of-a-common-but-underdiagnosed-pediatric-problem
#13
REVIEW
Joana Dos Santos, Roberto I Lopes, Martin A Koyle
Bladder and bowel dysfunction (BBD) describes a spectrum of lower urinary symptoms (LUTS) accompanied by fecal elimination issues that manifest primarily by constipation and/or encopresis. This increasingly common entity is a potential cause of significant physical and psychosocial burden for children and families. BBD is commonly associated with vesicoureteral reflux (VUR) and recurrent urinary tract infections (UTIs), which at its extreme may lead to renal scarring and kidney failure. Additionally, BBD is frequently seen in children diagnosed with behavioural and neuropsychiatric disorders such as attention-deficit/hyperactivity disorder (ADHD) and autism spectrum disorder (ASD)...
January 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28263050/clinical-significance-of-intravesical-prostatic-protrusion-in-the-management-of-benign-prostatic-enlargement-a-systematic-review-and-critical-analysis-of-current-evidence
#14
Malte Rieken, Fabrizio Presicce, Riccardo Autorino, Cosimo De Nunzio
INTRODUCTION: Filling cystometry and pressure flow studies (PFS) are the most widespread used invasive urodynamic techniques in the assessment of male LUTS. However, these techniques are time- and cost-intensive. Intravesical prostatic protrusion (IPP) has been proposed as non-invasive method used to diagnose bladder outlet obstruction (BOO) in men with male lower urinary tract symptoms (LUTS). The purpose of the present review is to analyze the diagnostic and therapeutic relevance of IPP...
March 6, 2017: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
https://www.readbyqxmd.com/read/28261619/the-long-term-effect-of-radical-prostatectomy-on-erectile-function-urinary-continence-and-lower-urinary-tract-symptoms-a-comparison-to-age-matched-healthy-controls
#15
Badereddin Mohamad Al-Ali, Anton Ponholzer, Herbert Augustin, Stephan Madersbacher, Karl Pummer
Introduction. To analyze the impact of radical prostatectomy (RPE) on erectile function and lower urinary tract function in comparison to age-matched healthy men. Materials and Methods. Patients who underwent radical retropubic prostatectomy completed questionnaires containing the IIEF-5, the Bristol female LUTS questionnaire, and the International Prostate Symptom Score (IPSS). Results. Patients after RPE were included (n = 363). Age-matched healthy men (n = 363) were included. The mean IIEF-5 of patients aged 61-70 yrs after RPE was 10...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28257560/dutasteride-add-on-therapy-reduces-detrusor-mass-in-patients-with-benign-prostatic-enlargement-not-satisfied-with-alpha-adrenergic-antagonist-monotherapy-a-single-center-prospective-study
#16
Cosimo De Nunzio, Aldo Brassetti, Flavia Proietti, Mauro Gacci, Sergio Serni, Francesco Esperto, Andrea Tubaro
AIMS: The ultrasound assessment of bladder wall thickness (BWT) and intravesical prostatic protrusion (IPP) have emerged as a non-invasive, inexpensive, time-saving alternatives to pressure-flow studies to assess benign prostatic obstruction (BPO). Aim of our study was to evaluate the effect on detrusor mass of dutasteride add-on therapy in men with lower urinary tract symptoms (LUTS) and benign prostatic enlargement (BPE). METHODS: A consecutive series of BPE patients with a prostate volume (PV) ≥30 mL and an international prostate symptoms score (IPSS) ≥8 not satisfied with Tamsulosin monotherapy were enrolled...
March 3, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28256100/uwin-urgency-weak-stream-incomplete-void-nocturia-score-for-assessment-of-lower-urinary-tract-symptoms-could-it-replace-the-american-urology-association-symptom-index-score-an-open-label-randomized-cross-over-trial
#17
Ashwin Mallya, Ramaiah Keshavamurthy, Vilvapathy S Karthikeyan, Sumit Kumar, Mahadevappa Nagabhushana, Ananth J Kamath
OBJECTIVE: The American Urology Association symptom index (AUASI) is the most accepted tool to assess lower urinary tract symptoms (LUTS). UWIN (urgency, weak stream, incomplete void, nocturia) score is a simplified questionnaire with fewer and more distinctive options omitting three questions from AUASI. We sought to identify if UWIN is equally efficient in capturing LUTS and could replace the gold-standard AUASI. METHODS: Consecutive consenting male patients with benign prostatic hyperplasia (BPH)-LUTS were randomized to receive either UWIN/AUASI questionnaire first followed by the other...
March 3, 2017: Lower Urinary Tract Symptoms
https://www.readbyqxmd.com/read/28255867/benign-prostatic-obstruction-relief-in-patients-with-lower-urinary-tract-symptoms-suggestive-of-benign-prostatic-enlargement-undergoing-endoscopic-surgical-procedures-or-therapy-with-alpha-blockers-a-review-of-urodynamic-studies
#18
REVIEW
Ferdinando Fusco, Massimiliano Creta, Vittorio Imperatore, Nicola Longo, Ciro Imbimbo, Herbert Lepor, Vincenzo Mirone
Benign prostatic obstruction (BPO) contributes to the genesis of lower urinary tract symptoms as well as to pathologic remodeling of the lower and upper urinary tract in patients with benign prostate enlargement. Urodynamic studies demonstrate that both medical therapy with alpha-blockers (ABs) and endoscopic surgical procedures provide BPO relief. However, the magnitude of improvement is higher after surgery. Among ABs, silodosin is associated with the highest improvement of bladder outlet obstruction index (BOOI)...
March 2, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28248023/-pyeloureteral-stenting-using-nitinol-stents
#19
B G Guliev, A M Zagazezhev
AIM: To test the effectiveness of nitinol stents in restoring patency of pyeloureteral segment (PUS). MATERIALS AND METHODS: Endoureteral nitinol stents were used in 54 patients. The indications for stenting were recurrent strictures of upper urinary tract and ureteral tumor obstruction in 34 and 20 patients, respectively. In 9 (16.6%) of them, including 4 women and 5 men aged 28-65 years, stenting was performed for extensive recurrent PUS strictures. In 8 patients extensive strictures resulted from various surgical interventions on the PUS...
November 2016: Urologii︠a︡
https://www.readbyqxmd.com/read/28247661/-internal-drainage-in-cancer-patients-optimizing-treatment-of-stent-related-symptoms
#20
A G Martov, D V Ergakov, A B Novikov, N G Muzhetskaya, G L Esen'yan
INTRODUCTION: The so-called stent-related symptoms caused mainly by detrusor overactivity due to distal ("cystic") curl of the internal stent are common among patients with this type of drainage. The need for long-term stenting makes the quality of life of cancer patients one of the challenging problems of modern urology. The aim of this study was to optimize treatment of stent-related symptoms in cancer patients with internal long-term stents by complementing the treatment regimen with m-anticholinergic solifenacin...
April 2016: Urologii︠a︡
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