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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
https://www.readbyqxmd.com/read/28403596/blue-light-cystoscopy-with-hexylaminolevulinate-our-7-years-experience
#8
Vito Lacetera, Ubaldo Cantoro, Lorenzo Montesi, Daniele Cantoro, Bernardo Cervelli, Antonio Cicetti, Giuliana Gabrielloni, Domenico Milella, Michele Montesi, Roberto Morcellini, Gianni Parri, Emilio Recanatini, Valerio Beatrici
AIM: The objective of the present study is to evaluate the diagnostic accuracy of hexylaminolevulinate (HAL) blue light cystoscopy compared with standard white light cystoscopy (WLC) in daily practice. MATERIALS AND METHODS: An observational, comparative, controlled (within patient) study was carried out at our Center. 61 consecutive patients with suspected or confirmed bladder cancer were recruited for the study from January 2008 until January 2015. Patients with suspected bladder cancer (positive cytology with negative WLC) or history of previous high-grade NMIBC or CIS were included in the study...
March 31, 2017: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28398118/the-role-of-the-hydrogen-sulfide-pathway-in-male-and-female-urogenital-system-in-health-and-disease
#9
Roberta d'Emmanuele di Villa Bianca, Ferdinando Fusco, Vincenzo Mirone, Giuseppe Cirino, Raffaella Sorrentino
Significance The endogenous hydrogen sulfide (H<sub></sub>2<sub></sub>S) pathway produces an array of biological effects that vary depending upon the bodily region. In addition, the H<sub></sub>2<sub></sub>S pathway's relevance often changes depending upon a healthy or disease state. There is abundant evidence pointing to a key role for this pathway in male and female genito-urinary diseases suggesting it as a possible target for new therapeutic approaches. Recent Advances The tissue-specific localization of the H2S enzymes in the genito-urinary tract has allowed for a better understanding of its role in the body's pathophysiology...
April 11, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28397141/differentiation-dependent-rearrangements-of-actin-filaments-and-microtubules-hinder-apical-endocytosis-in-urothelial-cells
#10
Larisa Tratnjek, Rok Romih, Mateja Erdani Kreft
During differentiation, superficial urothelial cells (UCs) of the urinary bladder form the apical surface, which is almost entirely covered by urothelial plaques containing densely packed uroplakin particles. These urothelial plaques are the main structural components of the blood-urine permeability barrier in the urinary bladder. We have shown previously that endocytosis from the apical plasma membrane decreases during urothelial cell differentiation. Here, we investigated the role of actin filament and microtubule rearrangements in apical endocytosis of differentiating UCs cells using hyperplastic and normoplastic porcine urothelial models...
April 10, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28394530/-tissue-engineering-of-urinary-bladder-using-acellular-matrix
#11
P V Glybochko, Yu V Olefir, Yu G Alyaev, D V Butnaru, E A Bezrukov, A A Chaplenko, T M Zharikova
INTRODUCTION: Tissue engineering has become a new promising strategy for repairing damaged organs of the urinary system, including the bladder. The basic idea of tissue engineering is to integrate cellular technology and advanced bio-compatible materials to replace or repair tissues and organs. AIM: of the study is the objective reflection of the current trends and advances in tissue engineering of the bladder using acellular matrix through a systematic search of preclinical and clinical studies of interest...
April 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28394416/histopathological-characteristics-of-interstitial-cystitis-bladder-pain-syndrome-without-hunner-lesion
#12
Aram Kim, Ju-Young Han, Chae-Min Ryu, Hwan Yeul Yu, Seungun Lee, YongHwan Kim, Se Un Jeong, Yong Mee Cho, Dong-Myung Shin, Myung-Soo Choo
AIMS: We aimed to assess the distinct histopathological characteristics and their clinical significance between non-Hunner and Hunner interstitial cystitis/bladder pain syndrome(IC/BPS). METHODS AND RESULTS: We prospectively enrolled and classified IC/BPS patients, based on cystoscopic findings, as non-Hunner type IC and Hunner type IC. Specimens obtained from the posterior wall in non-Hunner type IC cases during hydrodistension or from Hunner /non-Hunner lesions in Hunner type IC cases during transurethral resection were evaluated...
April 10, 2017: Histopathology
https://www.readbyqxmd.com/read/28389594/giant-fibroepithelial-polyp-of-the-ureter
#13
Mayank Gupta, Sanjeet Roy, Cornerstone Wann, Anu Eapen
Giant fibroepithelial polyp is a rare cause of ureteric/ureteropelvic junction (UPJ) obstruction. We report a rare case of giant fibroepithelial polyp in a 32-year-old woman involving the whole length of the ureter, reaching up to the UPJ which was clinically and radiologically considered to be urothelial carcinoma. Frozen section showed a polypoid lesion lined by urothelium with no evidence of dysplasia or malignancy. Subsequently, nephroureterectomy was done as there was marked renal hydronephrosis and it was impossible to separate the polyp from the wall of the ureter...
April 7, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28373455/comparison-of-efficacy-of-adjuvant-mec-methotrexate-epirubicin-and-cisplatin-and-gc-gemcitabine-and-cisplatin-in-advanced-upper-tract-urothelial-carcinoma
#14
Sheng-Chun Hung, Shian-Shiang Wang, Chun-Kuang Yang, Jian-Ri Li, Chen-Li Cheng, Yen-Chuan Ou, Hao-Chung Ho, Kun-Yuan Chiu, Chuan-Shu Chen
AIM: To evaluate the efficacy of methotrexate, epirubicin and cisplatin (MEC) or gemcitabine and cisplatin (GC) as adjuvant chemotherapy in advanced upper tract urothelium carcinoma (UTUC). PATIENTS AND METHODS: From 2002 January to 2008 December, a total of 70 patients with advanced UTUC received radical nephroureterctomy at our Institute with MEC and GC as adjuvant chemotherapy. Disease-free survival (DFS), cancer-specific survival (CSS) and overall survival (OS) among the two groups were evaluated...
April 2017: Anticancer Research
https://www.readbyqxmd.com/read/28371382/inhibitory-effects-of-urothelium-related-factors
#15
Na N Guan, Lars E Gustafsson, Karl Svennersten
The urothelium of the bladder has long been recognized as a protective barrier between detrusor and urine. In recent years, it has become more evident that the urothelium plays a role as an active source of mediators. The urothelium can release neurotransmitters and modulators such as acetylcholine, ATP, nitric oxide, prostaglandins and neuropeptides. They exert both excitatory and inhibitory effects in modulating urinary tract motility. In addition, several studies have reported the existence of an urothelium-derived unknown inhibitory factor in the urinary bladder...
April 2, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28370277/3d-electron-microscopic-characterization-of-interstitial-cells-in-the-human-bladder-upper-lamina-propria
#16
Jochen Neuhaus, Birgit Schröppel, Martin Dass, Hans Zimmermann, Hartwig Wolburg, Petra Fallier-Becker, Thomas Gevaert, Claus J Burkhardt, Hoang Minh Do, Jens-Uwe Stolzenburg
AIMS: To explore the ultrastructure of interstitial cells in the upper lamina propria of the human bladder, to describe the spatial relationships and to investigate cell-cell contacts. METHODS: Focused ion beam scanning electron microscopy (FIB-SEM), 3-View SEM and confocal laser scanning microscopy were used to analyze the 3D ultrastructure of the upper lamina propria in male and female human bladders. RESULTS: 3View-SEM image stacks as large as 59 × 59 × 17 μm(3) (xyz) at a resolution of 16 × 16 × 50 nm(3) and high resolution (5 × 5 × 10 nm(3) ) FIB-SEM stacks could be analyzed...
March 31, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28367434/mediator-complex-subunit-med1-protein-expression-is-decreased-during-bladder-cancer-progression
#17
Niklas Klümper, Isabella Syring, Wenzel Vogel, Doris Schmidt, Stefan C Müller, Jörg Ellinger, Zaki Shaikhibrahim, Johannes Brägelmann, Sven Perner
INTRODUCTION: Bladder cancer (BCa) is among the most frequent cancer entities and relevantly contributes to cancer-associated deaths worldwide. The multi-protein Mediator complex is a central regulator of the transcriptional machinery of protein-coding genes and has been described to be altered in several malignancies. MED1, a subunit of the tail module, was described to negatively modulate expression of metastasis-related genes and to be downregulated in melanoma and lung cancer. In contrast, MED1 hyperactivity was described in breast and prostate cancer, likely due its function as a hub for nuclear hormone receptors...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28366657/normal-porcine-ureter-retains-lumen-wall-integrity-but-not-patency-following-catheter-directed-irreversible-electroporation-imaging-and-histologic-assessment-over-28-days
#18
Govindarajan Srimathveeravalli, Francois Cornelis, Thomas Wimmer, Sebastien Monette, Simon Y Kimm, Majid Maybody, Stephen B Solomon, Jonathan A Coleman, Jeremy C Durack
PURPOSE: To evaluate the effect of catheter-directed irreversible electroporation (IRE) on the integrity, patency, and function of the normal porcine ureter. MATERIALS AND METHODS: A catheter-mounted electrode was used to perform fluoroscopy-guided IRE in 8 healthy pigs. Two unilateral ablations (90 pulses at 2,000 V, 100 μs) were performed in each animal in the proximal and distal ureter. Serum creatinine measurements and contrast-enhanced computed tomography imaging were performed at 1, 7, 14, 21, and 28 days after IRE, and findings were compared with baseline values by Student t test...
March 30, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28361520/on-the-site-and-mechanism-of-action-of-%C3%AE-3-adrenoceptor-agonists-in-the-bladder
#19
REVIEW
Karl Erik Andersson
The clinical success of mirabegron as the first β3-adrenoceptor (AR) agonist for treatment of the overactive bladder (OAB) syndrome, has resulted in substantial interest in its site and mechanism of action. Even if the adrenergic innervation of the bladder and urethra has been well studied, the location(s) of β3-ARs in different structures within the bladder wall and urethra, and the mode(s) of action of β3-AR stimulation have still not been established. The recent demonstration of β3-ARs on cholinergic nerve terminals with no immunoreactivity in urothelium or detrusor smooth muscle, is not in agreement with previous morphological studies, and functional data strongly suggest that β3-ARs can be found these structures...
March 24, 2017: International Neurourology Journal
https://www.readbyqxmd.com/read/28351362/a-peculiar-case-report-of-extraovarian-brenner-tumor-arising-in-the-omentum
#20
Chung Su Hwang, Chang Hun Lee, So Jeong Lee, Young Geum Kim, Ahrong Kim, Do Youn Park, Hyun Jeong Kang, Dong Hoon Shin
BACKGROUND: Brenner tumors almost always develop in the ovary. Exceptionally, extraovarian Brenner tumors have been reported in the lower abdomen or pelvic organs. Here, we introduce a peculiar case of an extraovarian Brenner tumor arising in the omentum. CASE PRESENTATION: A 43-year-old woman presented with a palpable abdominal mass. Computed tomography (CT) scan revealed a 9.0-cm solid mass in the omentum. The tumor was not associated with pelvic structures, including the ovaries...
March 28, 2017: World Journal of Surgical Oncology
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