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Urothelium

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https://www.readbyqxmd.com/read/28525382/sulfatase-1-overexpression-indicates-poor-prognosis-in-urothelial-carcinoma-of-the-urinary-bladder-and-upper-tract
#1
Hsiang-Ying Lee, Bi-Wen Yeh, Ti-Chun Chan, Kei-Fu Yang, Wei-Ming Li, Chun-Nung Huang, Hung-Lung Ke, Ching-Chia Li, Hsin-Chih Yeh, Peir-In Liang, Yow-Ling Shiue, Wen-Jeng Wu, Chien-Feng Li
Urothelial carcinoma (UC), arising from the urothelium of the urinary tract, can occur in the upper (UTUC) and the urinary bladder (UBUC). A representative molecular aberration for UC characteristics and prognosis remains unclear. Data mining of Gene Expression Omnibus focusing on UBUC, we identified sulfatase-1 (SULF1) upregulation is associated with UC progression. SULF1 controls the sulfation status of heparan sulfate proteoglycans and plays a role in tumor growth and metastasis, while its role is unexplored in UC...
May 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28506860/characterization-of-late-recurrence-after-radical-cystectomy-in-a-large-multicenter-cohort-of-bladder-cancer-patients
#2
Francesco Soria, Marco Moschini, Gregory J Wirth, Kilian M Gust, Tobias Klatte, Alberto Briganti, Paolo Gontero, Mohammad Abufaraj, Mehmet Özsoy, Pierre I Karakiewicz, Shahrokh F Shariat
OBJECTIVE: To investigate the characteristics and outcomes of late recurrence (LR) in bladder cancer (BCa) patients treated with radical cystectomy (RC) and to identify clinico-pathologic predictors of LR and post-recurrence survival. METHODS: This multicenter study included 1652 BCa patients. LR was defined as occurring more than 5 years after RC. Differences in post-recurrence overall survival according to the timing of disease recurrence and to the location of recurrence were calculated using the log rank test...
May 12, 2017: Urology
https://www.readbyqxmd.com/read/28500846/the-trophoblast-cell-surface-antigen-2-and-mir-125b-axis-in-urothelial-bladder-cancer
#3
Chiara Avellini, Caterina Licini, Raffaella Lazzarini, Rosaria Gesuita, Emanuela Guerra, Giovanni Tossetta, Clara Castellucci, Stefano Raffaele Giannubilo, Antonio Procopio, Saverio Alberti, Roberta Mazzucchelli, Fabiola Olivieri, Daniela Marzioni
Human trophoblast cell surface antigen 2 (Trop-2) is a 40-kDa transmembrane glycoprotein that was first identified as a marker of human trophoblast cells. Trop-2 acts on cell proliferation, adhesion, and migration by activating a number of intracellular signalling pathways. Elevated Trop-2 expression has been demonstrated in several types of cancer and correlated with aggressiveness and poor prognosis. Since no data are available on Trop-2 in bladder cancer (BC), the purpose of the study was to determine its levels in tissue specimens from normal individuals and patients with BC at different stages...
April 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28477359/inhibitory-effect-of-the-urothelium-lamina-propria-on-female-porcine-urethral-contractility-effect-of-age
#4
Oladayo Seun Folasire, Russ Chess-Williams, Donna Jayne Sellers
The urethral uroepithelium has been implicated in urethral sensation and maintenance of continence. However, relatively little is known about the function of the urethral urothelium compared with that of the bladder. The aim of the study was to examine the role of the urothelium/lamina propria on contractility of the porcine urethra, along with the influence of nitric oxide, prostaglandins and ageing. Porcine urethral tissues, intact and denuded of urothelium/lamina propria, were mounted in tissue baths and contractions to noradrenaline, phenylephrine and carbachol obtained...
May 6, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28471659/urinary-tract-infection-which-conformation-of-the-bacterial-lectin-fimh-is-therapeutically-relevant
#5
Katharina Mayer, Deniz Eris, Oliver Schwardt, Christoph P Sager, Said Rabbani, Simon Kleeb, Beat Ernst
Frequent antibiotic treatment of urinary tract infections has resulted in the emergence of antimicrobial resistance, necessitating alternative treatment options. One such approach centers around FimH antagonists that block the bacterial adhesin FimH, which would otherwise mediate binding of uropathogenic Escherichia coli to the host urothelium to trigger the infection. Although the FimH lectin can adopt three distinct conformations, the evaluation of FimH antagonists has mainly been performed with a truncated construct of FimH locked in one particular conformation...
May 11, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28463605/comparison-of-poly-l-lactide-co-%C3%AE%C2%B5-caprolactone-and-poly-trimethylene-carbonate-membranes-for-urethral-regeneration-an-in-vitro-and-in-vivo-study
#6
Reetta Sartoneva, Panu Nordback, Suvi Haimi, Dirk W Grijpma, Kalle Lehto, Rooney Niall, Riitta Seppänen-Kaijansinkko Md Dds PhD, Susanna Miettinen, Tuija Lahdes-Vasama
Urethral defects are normally reconstructed using patient's own genital tissue; however, in severe cases, additional grafts are needed. We studied the suitability of poly(L-lactide-co-ε-caprolactone) (PLCL) and poly(trimethylene carbonate) (PTMC) membranes for urethral reconstruction in vivo. Further, the compatibility of the materials was evaluated in vitro with human urothelial cells (hUC). The attachment and viability of hUCs and the expression of different urothelial cell markers (Cytokeratin 7, 8, 19 and Uroplakin Ia, Ib and III) were studied after in vitro cell culture on PLCL and PTMC...
May 2, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28449606/pseudomyxoma-peritonei-as-a-first-manifestation-of-kras-mutated-urachal-mucinous-cystadenocarcinoma-of-the-bladder-a-case-report
#7
Ksenya V Shelekhova, Alexander S Zhuravlev, Daria D Krylova, Alexey S Konstantinov, Lidia V Shtan, Valeriia A Kheinshtein
Only 28 cases of pseudomyxoma peritonei (PMP) arising from urachal neoplasms have been reported. We report one example of this extremely rare disease with KRAS mutational status in its spectrum of pathology. A 45-year-old woman presented with urachal frankly invasive mucinous cystadenocarcinoma confined to the dome of the bladder, which clinically manifested as PMP and was not detected at the first surgery. The primary tumour was revealed 6 months later because of its recurrence as PMP. Microscopic investigation revealed tubular adenoma and cystadenocarcinoma communicating with the bladder lumen and transitioning from the urachal urothelium to the mucinous epithelium...
April 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28446032/effect-of-intravesical-liposome-based-nerve-growth-factor-antisense-therapy-on-bladder-overactivity-and-nociception-in-a-rat-model-of-cystitis-induced-by-hydrogen-peroxide
#8
Tsuyoshi Majima, Pradeep Tyagi, Koji Dogishi, Mahendra Kashyap, Yasuhito Funahashi, Momokazu Gotoh, Michael B Chancellor, Naoki Yoshimura
The aim of this study was to evaluate whether liposome-based local suppression of nerve growth factor (NGF) in the bladder has effects on bladder hypersensitivity in a rat cystitis model induced by intravesical instillation of hydrogen peroxide (HP). HP (1.5%) was intravesically administered to adult female Sprague-Dawley rats. Liposomes complexed with NGF antisense oligonucleotide (OND) labeled with TYE563 fluorescent tag were intravesically instilled on day 2. Red fluorescence from the TYE 563 tag was observed with fluorescent microscopy on day 3...
April 18, 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/28444701/is-electrolyte-transfer-across-the-urothelium-important-ici-rs-2015
#9
REVIEW
Karen D McCloskey, Bahareh Vahabi, Christopher H Fry
AIMS: This article summarizes discussion at the International Consultation on Incontinence Research Society (ICI-RS) 2015 meeting of urine modification in the urinary tract by the urothelium. It considers the literature and proposes pertinent questions that need to be addressed to understand this phenomenon within a physiological context. METHODS: Following the ICI-RS meeting, publications in PubMed relating to urine modification in the renal pelvis, ureter, and bladder were reviewed...
April 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28443149/inverted-urothelial-papilloma-a-review-of-diagnostic-pitfalls-and-clinical-management
#10
REVIEW
Mary K Sweeney, Soroush Rais-Bahrami, Jennifer Gordetsky
Inverted urothelial papilloma (IUP) is a rare, non-invasive endophytic lesion that accounts for 1-2% of urothelial tumours. On cystoscopy, IUP appears as a pedunculated/papillary mass with a smooth surface. On microscopy, IUP has an endophytic growth pattern with the bulk of the tumour covered by a superficial layer of urothelium, which can be hyperplastic or attenuated. The cytology should be bland, with uniform, spindled cells arranged in anastomosing trabeculae and cords with peripheral palisading of basaloid cells...
January 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28437032/autonomic-receptor-mediated-regulation-of-production-and-release-of-nitric-oxide-in-normal-and-malignant-human-urothelial-cells
#11
Michael Winder, Renata Vesela, Patrik Aronsson, Bhavik Patel, Thomas Carlsson
In the urinary bladder, the main source of NO seems to be the urothelium and the underlying suburothelium. In this study, we aimed to characterize how receptors in the human urothelium regulate the production and release of NO. For this, we cultured two human urothelial cell lines - the normal immortalized cell line UROtsa and the malignant cell line T24. These were treated with an array of agonists and antagonists with affinity for adrenergic, muscarinic and purinergic receptors. The production of NO and expression of nitric oxide synthase (NOS) was studied by immunocytochemistry and western blotting...
April 24, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28434947/effect-of-urinary-cytology-for-detecting-recurrence-in-remnant-urothelium-after-radical%C3%A2-cystectomy-insights-from-a-10-year-cytology-database
#12
Renate Pichler, Gennadi Tulchiner, Wilhelm Oberaigner, Georg Schaefer, Wolfgang Horninger, Andrea Brunner, Isabel Heidegger
BACKGROUND: We evaluated the diagnostic accuracy of urinary cytology (UCy) for detecting recurrence in the remnant urothelium (RRU) after radical cystectomy (RC) for urothelial cancer. PATIENTS AND METHODS: We conducted a 10-year retrospective analysis of a prospectively collected, single-center RC database comprising 177 patients who had undergone follow-up examinations at our department with ≥ 1 available postoperative UCy specimen. UCy specimens were classified using the Papanicolaou scheme...
March 30, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28431768/is-there-room-for-luminal-basal-urothelial-cell-population-quantification
#13
G R Passos, J A Camargo, K L Ferrari, G C Franch, A E Nowill, L O Reis
PURPOSE: Three cell layers compose the urothelium: basal, intermediate and luminal ("umbrella cells") and different diseases might arise from different cell populations. The aim of this study is to analyze the quantification ability of such cell populations by using four different protocols. METHODS: Twenty male rats (Wistar) were randomized in four groups of five animals: scraping, enzymatic 30, 45 and 60minutes. The cells were isolated, analyzed by flow cytometer and data processed by BD FACSDIVA™ software...
April 18, 2017: Actas Urologicas Españolas
https://www.readbyqxmd.com/read/28428106/gata3-immunohistochemistry-in-urothelial-carcinoma-of-the-upper-urinary-tract-as-a-urothelial-marker-as-well-as-a-prognosticator
#14
Satoshi Inoue, Taichi Mizushima, Kazutoshi Fujita, Abdelrazak Meliti, Hiroki Ide, Seiji Yamaguchi, Hiroaki Fushimi, George J Netto, Norio Nonomura, Hiroshi Miyamoto
Immunohistochemistry of a transcription factor, GATA3, has been widely used as a promising urothelial marker in diagnostic surgical pathology practice. However, the expression status of GATA3 in upper urinary tract urothelial carcinomas (UUTUCs) and its prognostic significance have not been fully investigated. We immunohistochemically stained for GATA3 in 99 UUTUC samples and paired non-neoplastic urothelial tissues. GATA3 was positive in 51 [51.5%; 32 (32.3%) weak, 11 (11.1%) moderate, 8 (8.1%) strong] of 99 UUTUCs, which was significantly lower than in benign urothelium [79 (96...
April 17, 2017: Human Pathology
https://www.readbyqxmd.com/read/28428051/cell-penetrating-peptide-cgkrk-mediates-efficient-and-widespread-targeting-of-bladder-mucosa-following-focal-injury
#15
James I Griffin, Siu Kit Kevin Cheng, Tomoko Hayashi, Dennis Carson, Manju Saraswathy, Devatha P Nair, Dmitri Simberg
The bladder presents an attractive target for topical drug delivery. The barrier function of the bladder mucosa (urothelium) presents a penetration challenge for small molecules and nanoparticles. We found that focal mechanical injury of the urothelium greatly enhances the binding and penetration of intravesically-administered cell-penetrating peptide CGKRK (Cys-Gly-Lys-Arg-Lys). Notably, the CGKRK bound to the entire urothelium, and the peptide was able to penetrate into the muscular layer. This phenomenon was not dependent on intravesical bleeding and was not caused by an inflammatory response...
April 17, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28420508/a-promising-protein-responsible-for-overactive-bladder-in-ovariectomized-mice
#16
Huey-Yi Chen, Chao-Jung Chen, Wen-Chi Chen, Shih-Jing Wang, Yung-Hsiang Chen
OBJECTIVE: Ovariectomy (OVX) in mice is a model mimicking a neuro-electronic proof of an overactive bladder in postmenopausal women. Overactive bladder (OAB) was recently found to be due to an altered gap junction protein in a rat model. Thus, this study was conducted to evaluate changes in cell junction protein expression and composition in the bladder of OVX mice. MATERIALS AND METHODS: Thirty-six virgin female mice were randomized into three groups: mice with a sham operation only (control), OVX mice without estradiol (E2) replacement, and OVX mice with E2 replacement (OVX + E2)...
April 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28419193/a-randomized-phase-ii-iii-study-of-cabazitaxel-versus-vinflunine-in-metastatic-or-locally-advanced-transitional-cell-carcinoma-of-the-urothelium-secavin
#17
J Bellmunt, J M Kerst, F Vázquez, R Morales-Barrera, E Grande, A Medina, Mªb González Graguera, G Rubio, U Anido, O Fernández Calvo, E González-Billalabeitia, Ajm Van den Eertwegh, E Pujol, J L Perez-Gracia, J L González Larriba, R Collado, M Los, S Maciá, R De Wit
BACKGROUND: Despite the advent of immunotherapy in urothelial cancer, there is still a need to find effective cytotoxic agents beyond first and second line. Vinflunine is the only treatment approved in this setting by the European Medicines Agency (EMA) and taxanes are also widely used in second line. Cabazitaxel is a taxane with activity in docetaxel-refractory cancers. A randomized study was conducted to compare its efficacy vs vinflunine. PATIENTS AND METHODS: This is a multicenter, randomized, open-label, phase II/III study, following a Simon's optimal method with stopping rules based on an interim futility analysis and a formal efficacy analysis at the end of the phase II...
April 13, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28415801/identification-of-long-non-coding-rnas-that-stimulate-cell-survival-in-bladder-cancer
#18
Aleksandra M Dudek, Sabrina J Boer, Nanda Boon, J Alfred Witjes, Lambertus A L M Kiemeney, Gerald W Verhaegh
For many years, research on the biology underlying bladder cancer focused on protein-coding genes which cover only about 3% of the human genome. Recently, it was discovered that a large part of the human genome is actively transcribed as long non-coding RNAs (lncRNAs). LncRNAs are master regulators of gene expression and several lncRNAs were shown to play a role in bladder cancer development and progression. Here, we analyzed lncRNA expression in muscle-invasive bladder cancer (MIBC) using the MiTranscriptome database of cancer lncRNA expression profiles, and we studied their function in bladder cancer-derived tumor cells...
March 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415542/bladder-smooth-muscle-cells-on-electrospun-poly-%C3%AE%C2%B5-caprolactone-poly-l-lactic-acid-scaffold-promote-bladder-regeneration-in-a-canine-model
#19
Nasser Shakhssalim, Masoud Soleimani, Mohammad M Dehghan, Javad Rasouli, Masoud Taghizadeh-Jahed, Peyman M Torbati, Mohammad Naji
Engineering of urinary bladder has been the focus of numerous studies in recent decade. Novel biomaterials, innovative fabrication methods and various modification processes of scaffolds are the critical issues to find supportive matrices. Supportive characteristics of electrospun PCL/PLLA nano-scaffold for bladder augmentation in canine model and the role of bladder cells in regeneration process were appraised. Electrospun PCL/PLLA was fabricated by co-electrospinning of PCL and PLLA. Bladder cells were isolated and transduced with lentiviral particles encoding eGFP and JRed proteins...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28403598/prospective-study-to-compare-antibiosis-versus-the-association-of-n-acetylcysteine-d-mannose-and-morinda-citrifolia-fruit-extract-in-preventing-urinary-tract-infections-in-patients-submitted-to-urodynamic-investigation
#20
Giovanni Palleschi, Antonio Carbone, Pier Paolo Zanello, Rita Mele, Antonino Leto, Andrea Fuschi, Yazan Al Salhi, Gennaro Velotti, Samer Al Rawashdah, Gianluca Coppola, Angela Maurizi, Serena Maruccia, Antonio L Pastore
BACKGROUND: The abuse of antimicrobical drugs has increased the resistance of microorganisms to treatments, thus to make urinary tract infections (UTIs) more difficult to eradicate. Among natural substances used to prevent UTI, literature has provided preliminary data of the beneficial effects of D-mannose, N-acetylcysteine, and Morinda citrifolia fruit extract, due to their complementary mechanism of action which contributes respectively to limit bacteria adhesion to the urothelium, to destroy bacterial pathogenic biofilm, and to the anti-inflammatory and analgesic activity...
March 31, 2017: Archivio Italiano di Urologia, Andrologia
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