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https://www.readbyqxmd.com/read/28087925/host-responses-to-urinary-tract-infections-and-emerging-therapeutics-sensation-and-pain-within-the-urinary-tract
#1
Lori A Birder, David J Klumpp
Urinary tract infection (UTI) pathogenesis is understood increasingly at the level of the uropathogens and the cellular and molecular mediators of host inflammatory responses. However, little is known about the mediators of symptoms during UTI and what distinguishes symptomatic events from asymptomatic bacteriuria. Here, we review bladder physiology and sensory pathways in the context of an emerging literature from murine models dissecting the host and pathogen factors mediating pain responses during UTI. The bladder urothelium is considered a mediator of sensory responses and appears to play a role in UTI pain responses...
October 2016: Microbiology Spectrum
https://www.readbyqxmd.com/read/28081549/microrna-promoter-methylation-a-new-tool-for-accurate-detection-of-urothelial-carcinoma
#2
Nuno André Padrão, Sara Monteiro-Reis, Jorge Torres-Ferreira, Luís Antunes, Luís Leça, Diana Montezuma, João Ramalho-Carvalho, Paula C Dias, Paula Monteiro, Jorge Oliveira, Rui Henrique, Carmen Jerónimo
BACKGROUND: Urothelial carcinoma (UC) is the most common cancer affecting the urinary system, worldwide. Lack of accurate early detection tools entails delayed diagnosis, precluding more efficient and timely treatment. In a previous study, we found that miR-129-2 and miR-663a were differentially methylated in UC compared with other genitourinary tract malignancies. Here, we evaluated the diagnostic performance of those microRNAs in urine. METHODS: Promoter methylation levels of miR-129-2 and miR-663a were assessed, using real-time quantitative methylation-specific PCR, in UC tissue samples (using normal urothelium as control) and, subsequently, in urine samples from UC and other genitourinary malignancies...
January 12, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28074261/perioperative-chemotherapy-in-upper-tract-urothelial-carcinoma-a-comprehensive-review
#3
REVIEW
Atiqullah Aziz, Jakub Dobruch, Kees Hendricksen, Luis A Kluth, Andrea Necchi, Aidan Noon, Michael Rink, Florian Roghmann, Roland Seiler, Paolo Gontero, Wassim Kassouf, Shahrokh F Shariat, Evanguelos Xylinas
PURPOSE: To evaluate the role of neoadjuvant (NAC) and adjuvant chemotherapy (AC) in patients with upper tract urothelial carcinoma (UTUC) treated with radical nephroureterectomy (RNU). METHODS: A comprehensive review of the current literature was performed searching for all studies investigating NAC and AC in UTUC in MEDLINE and https://clinicaltrials.gov , prior to April 2016. The following keywords were used: "ureteral neoplasms," "urothelium," "ureter," "upper tract urothelial," "chemotherapy," "adjuvant," "neoadjuvant" and relevant variants...
January 10, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/28050435/mucinous-cystadenocarcinoma-in-a-horse-shoe-kidney-masquerading-as-giant-hydronephrosis-a-case-report-diagnostic-challenges-lessons-learnt-and-review-of-literature
#4
Leena Dennis Joseph, Sriram Krishnamoorthy, Rajendiran Swaminathan, Gokul Kripesh, Hariharasudhan Sekar
Primary epithelial tumour of the renal pelvis is a rare entity. So far, very few cases are reported in literature. Of these, mucin secreting adenocarcinomas are distinctly rare. However, mucinous cystadenocarcinoma, that too arising in a horse shoe kidney is extremely rare to be reported. Mucinous cystadenomas and carcinomas arising from the renal pelvis are regarded to be secondary to a metaplastic change in the urothelium. Here, we present a case of a 51-year-old male, who complained of abdominal pain, palpable abdominal mass, haematuria along with passage of mucoid material in the urine, with a very poorly functioning kidney...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28049658/stage-and-subunit-specific-functions-of-polycomb-repressive-complex-2-in-bladder-urothelial-formation-and-regeneration
#5
Chunming Guo, Zarine R Balsara, Warren G Hill, Xue Li
Urothelium is the protective lining of the urinary tract. The mechanisms underlying urothelial formation and maintenance are largely unknown. Here, we report the stage-specific roles of PRC2 epigenetic regulators in embryonic and adult urothelial progenitors. Without Eed, the obligatory subunit of PRC2, embryonic urothelial progenitors demonstrate reduced proliferation with concomitant dysregulation of genes including Cdkn2a(p16), Cdkn2b(p15) and Shh. These mutants display premature differentiation of Keratin 5-positive (Krt5(+)) basal cells and ectopic expression of squamous-like differentiation markers...
January 3, 2017: Development
https://www.readbyqxmd.com/read/28040322/mucosectomy-impairs-ileal-microcirculation-and-results-in-flap-contraction-after-experimental-ileocystoplasty
#6
Raimondo M Cervellione, Daniel Hajnal, Gabreilla Varga, George Rakoczy, Jozsef Kaszaki, David Keene, Anju Goyal, Alan Dickson, Tamas Cserni
INTRODUCTION: Bladder augmentation with demucosalized ileal flap is a promising alternative approach for mucus free bladder augmentation; however, the contraction of the flap is still a major concern. It has been hypothesized that mucosectomy causes ischemic damage, but no direct histological evidence has been found and attention is now focused on the urothelium cover to prevent the exposure of the denuded surface to urine or the use of balloons to keep the flaps distended. OBJECTIVE: Our aim was to study the effect of mucosectomy on the microcirculation of ileal flaps during reverse clam ileocystoplasty using direct intraoperative imaging of the ileum...
November 29, 2016: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28002455/evidence-for-the-role-of-mast-cells-in-cystitis-associated-lower-urinary-tract-dysfunction-a-multidisciplinary-approach-to-the-study-of-chronic-pelvic-pain-research-network-animal-model-study
#7
Xu Wang, Wujiang Liu, Michael O'Donnell, Susan Lutgendorf, Catherine Bradley, Andrew Schrepf, Liwei Liu, Karl Kreder, Yi Luo
Bladder inflammation frequently causes cystitis pain and lower urinary tract dysfunction (LUTD) such as urinary frequency and urgency. Although mast cells have been identified to play a critical role in bladder inflammation and pain, the role of mast cells in cystitis-associated LUTD has not been demonstrated. Interstitial cystitis/bladder pain syndrome (IC/BPS) is a chronic and debilitating inflammatory condition of the urinary bladder characterized by the hallmark symptoms of pelvic pain and LUTD. In this study we investigated the role of mast cells in LUTD using a transgenic autoimmune cystitis model (URO-OVA) that reproduces many clinical correlates of IC/BPS...
2016: PloS One
https://www.readbyqxmd.com/read/27995855/recurrent-nephrolithiasis-associated-with-keratinizing-desquamative-squamous-metaplasia
#8
Ryan Fitzpatrick, Luke F Reynolds, James D Watterson, Luke T Lavallée, Trevor A Flood
Keratinizing desquamative squamous metaplasia (KDSM) in the renal pelvis is a rare condition with unclear malignant potential. Recent reports suggest it is likely benign and favor endoscopic treatment approaches. Medical record review was completed on two cases at our center to obtain history, physical examination, radiographic findings, and management. A literature review was completed to identify all published cases of KDSM. Both patients at our center suffered recurrent urolithiasis, hypothesized to be secondary to KDSM...
December 2016: Canadian Journal of Urology
https://www.readbyqxmd.com/read/27965369/pharmacological-characterization-of-a-novel-beta3-adrenergic-agonist-vibegron-evaluation-of-anti-muscarinic-receptor-selectivity-for-optimal-combination-therapy-for-overactive-bladder
#9
Jerry Di Salvo, Hiroshi Nagabukuro, Alexandra Wickham, Catherine Abbadie, Julie A DeMartino, Aileen Fitzmaurice, Loise Gichuru, Alison Kulick, Marcie J Donnelly, Nina Jochnowitz, Amanda Hurley, Antonio Pereira, Anthony Sanfiz, Gregory Veronin, Katherine Villa, John Woods, Beata Zamlynny, Emanuel Zycband, Gino M Salituro, Tara Frenkl, Ann E Weber, Scott D Edmondson, Mary Struthers
Although the physiological role of muscarinic receptors in bladder function and the therapeutic efficacy of muscarinic antagonists for the treatment of overactive bladder are well established, the role of β3-adrenergic receptors (β3ARs) and their potential as therapeutics is just emerging. In this manuscript, we characterized the pharmacology of a novel β3AR agonist vibegron (MK-4618, KRP-114V) and explored mechanistic interactions of β3AR agonism and muscarinic antagonism in urinary bladder function. Vibegron is a potent, selective full β3AR agonist across species and it dose-dependently increased bladder capacity, decreased micturition pressure and increased bladder compliance in rhesus monkeys...
December 13, 2016: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/27960233/iatrogenic-changes-in-the-urinary-tract
#10
REVIEW
Antonio Lopez-Beltran, Gladell P Paner, Rodolfo Montironi, Maria R Raspollini, Liang Cheng
A handful of therapeutic procedures are used to treat malignancies of the urinary tract, most frequently intravesical immunotherapy or chemotherapy, but also neoadjuvant systemic chemotherapy. These treatment modalities produce morphological changes in the urothelium that can be mistaken for carcinoma; in particular, these therapies frequently mimic urothelial carcinoma in situ (CIS) urothelial dysplasia or true invasive neoplasia. Drugs such as mitomycin C used after transurethral resection of bladder tumour to reduce recurrences, bacillus Calmette-Guérin (BCG) intravesical immunotherapy to treat high-risk non-muscle-invasive bladder cancer and urothelial CIS and platin-based systemic chemotherapy to improve postcystectomy disease-specific survival are examples of therapy-related atypia seen in the urinary tract...
January 2017: Histopathology
https://www.readbyqxmd.com/read/27932416/a-phase-ii-trial-of-dovitinib-in-bcg-unresponsive-urothelial-carcinoma-with-fgfr3-mutations-or-over-expression-hoosier-cancer-research-network-trial-hcrn-12-157
#11
Noah M Hahn, Trinity J Bivalacqua, Ashley E Ross, George J Netto, Alexander S Baras, Jong Chul Park, Carolyn Chapman, Timothy A Masterson, Michael O Koch, Richard Bihrle, Richard S Foster, Thomas A Gardner, Liang Cheng, David R Jones, Kyle McElyea, George E Sandusky, Timothy Breen, Ziyue Liu, Costantine Albany, Marietta L Moore, Rhoda A Loman, Angela Reed, Scott A Turner, Francine B de Abreu, Torrey L Gallagher, Gregory J Tsongalis, Elizabeth R Plimack, Richard E Greenberg, Daniel M Geynisman
PURPOSE: To assess the clinical and pharmacodynamic activity of dovitinib in a treatment resistant, molecularly enriched NMIUC population. EXPERIMENTAL DESIGN: A multi-site pilot phase 2 trial was conducted. Key eligibility criteria included: BCG unresponsive NMIUC (> 2 prior intravesical regimens) with increased phosphorylated FGFR3 (pFGFR3) expression by centrally analyzed immunohistochemistry (IHC+) or FGFR3 mutations (Mut+) assessed in a CLIA-licensed laboratory...
December 8, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27913307/urothelium-adherent-ion-triggered-liposome-in-gel-system-as-a-platform-for-intravesical-drug-delivery
#12
Shruti GuhaSarkar, Prachi More, Rinti Banerjee
Instillations of therapeutic agents into the urinary bladder have limited efficacy due to drug washout and inadequate attachment to and penetration into the bladder wall. Instilled nanoparticles alone have low stability and high susceptibility to washout, while gel-based systems are difficult to administer and retain. To overcome disadvantages of current technologies, a biodegradable, in situ-gelling liposome-in-gel (LP-Gel) system was developed for instillation into the bladder, composed of nano-sized, fluidizing liposomes incorporated into a "smart" biopolymeric, urine-triggered hydrogel...
November 29, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/27905300/intravital-imaging-of-mouse-urothelium-reveals-activation-of-extracellular-signal-regulated-kinase-by-stretch-induced-intravesical-release-of-atp
#13
Takeshi Sano, Takashi Kobayashi, Hiromitsu Negoro, Atsushi Sengiku, Takuya Hiratsuka, Yuji Kamioka, Louis S Liou, Osamu Ogawa, Michiyuki Matsuda
To better understand the roles played by signaling molecules in the bladder, we established a protocol of intravital imaging of the bladder of mice expressing a Förster/fluorescence resonance energy transfer (FRET) biosensor for extracellular signal-regulated kinase (ERK), which plays critical roles not only in cell growth but also stress responses. With an upright two-photon excitation microscope and a vacuum-stabilized imaging window, cellular ERK activity was visualized in the whole bladder wall, from adventitia to urothelium...
November 2016: Physiological Reports
https://www.readbyqxmd.com/read/27898096/on-a-fox-hunt-functions-of-fox-transcriptional-regulators-in-bladder-cancer
#14
REVIEW
Hironobu Yamashita, Vasty Osei Amponsa, Joshua I Warrick, Zongyu Zheng, Peter E Clark, Jay D Raman, Xue-Ru Wu, Cathy Mendelsohn, David J DeGraff
Genomic and transcriptional studies have identified discrete molecular subtypes of bladder cancer. These observations could be the starting point to identify new treatments. Several members of the forkhead box (FOX) superfamily of transcription factors have been found to be differentially expressed in the different bladder cancer subtypes. In addition, the FOXA protein family are key regulators of embryonic bladder development and patterning. Both experimental and clinical data support a role for FOXA1 and FOXA2 in urothelial carcinoma...
November 29, 2016: Nature Reviews. Urology
https://www.readbyqxmd.com/read/27894881/comparative-study-of-isolation-expansion-and-characterization-of-epithelial-cells
#15
Sanjay Gottipamula, Sumit K Saraswat, K N Sridhar
BACKGROUND AIMS: The human epithelial cells (EPCs) have been identified as the essential element for the regeneration of skin construct for burns, wounds and various tissue engineer-based products. METHODS: In this study, the isolation, expansion and characterization of EPCs from various sources such as juvenile foreskin (JSK), buccal mucosa (BM), penile skin (PS) and urothelium (UR) in serum-free and xeno-free EpiLife media were evaluated. RESULTS: The growth kinetics study revealed that EPCs from JSK and BM had notably higher growth rates compared with the others...
February 2017: Cytotherapy
https://www.readbyqxmd.com/read/27887944/facing-the-fate-of-the-remnant-urothelium-after-radical-cystectomy-there-is-room-for-improvement
#16
EDITORIAL
Malte W Vetterlein, Felix K-H Chun, Luis A Kluth
No abstract text is available yet for this article.
November 22, 2016: European Urology
https://www.readbyqxmd.com/read/27856205/differential-expression-of-renal-outer-medullary-k-channel-and-voltage-gated-k-channel-7-1-in-bladder-urothelium-of-patients-with-interstitial-cystitis-painful-bladder-syndrome
#17
Jane-Dar Lee, Ming-Huei Lee, Wen-Kai Yang, Kuan-Lin Wang, Tsung-Han Lee
OBJECTIVE: To investigate the changes including expression and localization of 2 potassium channels, renal outer medullary K(+) channel (ROMK) and voltage-gated K(+) channel 7.1 (KCNQ1), after increased urinary potassium leakage in patients with interstitial cystitis/painful bladder syndrome (IC/PBS). MATERIALS AND METHODS: The study group included 24 patients with IC/PBS and a control group consisting of 12 volunteers without any IC/PBS symptoms. Bladder biopsies were taken from both groups...
November 14, 2016: Urology
https://www.readbyqxmd.com/read/27852932/epididymis-like-tubules-in-adult-renal-hypodysplasia-immunohistochemical-features-indicate-a-mesonephric-origin
#18
Madhavi A Naik, Sanjay A Pai
We report the presence of epididymis-like tubules in unilateral renal hypodysplasia in 3 adult men. Microscopy showed dilated tubules lined by ciliated columnar epithelium and smaller basal cells, morphologically resembling epididymal tubules. Small tubules lined by cuboidal epithelium were also present in all cases, with glomeruli in 2 cases. The epididymis-like tubules expressed CD10, CK7, PAX8, and AR in the luminal epithelium, while the basal cells were positive for p63, CK7, and focally for CD10. The smooth muscle bundles around the epididymis-like tubules were focally AR and WT1 (cytoplasmic) positive...
November 16, 2016: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/27843222/prolapsing-cystitis-cystica-causing-bladder-outlet-obstruction-an-unusual-complication
#19
Pankaj Halder, Kartik Chandra Mandal, Sumedha Mukherjee
Cystitis cystica (CC) is aproliferative disorder of bladder urothelium and usually subsides with medical therapy. However, this is not true for severe CC where surgical intervention is required to control breakthrough urinary tract infection (UTI). It may be mistaken as bladder neoplasm or posterior urethral valve, especially in children. Here, we report a case of CC in a 2-year-old boy where we had to excise the large pedunculated intravesical lesion to control breakthrough UTI and ongoing renal damage.
October 2016: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/27809709/systematic-review-to-compare-urothelium-differentiation-with-urethral-epithelium-differentiation-in-fetal-development-as-a-basis-for-tissue-engineering-of-the-male-urethra
#20
Petra de Graaf, E Martine van der Linde, Peter F W M Rosier, Ander Izeta, Karl-Dietrich Sievert, J L H Ruud Bosch, Laetitia M O de Kort
BACKGROUND: Tissue-engineered (TE) urethra is desirable in men with urethral disease (stricture or hypospadias) and shortage of local tissue. Although ideally a TE graft would contain urethral epithelium cells, currently, bladder epithelium (urothelium) is widely used, but morphologically different. Understanding the differences and similarities of urothelium and urethral epithelium could help design a protocol for in vitro generation of urethral epithelium to be used in TE grafts for the urethra...
December 2, 2016: Tissue Engineering. Part B, Reviews
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