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Find video protocols related to scientific articles indexed in Pubmed.
Effects of adenosine monophosphate used in combination with L-arginine on female rabbit corpus cavernosum tissue.
Sex Med
PUBLISHED: 10-31-2014
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Sexual dysfunction is significantly more prevalent in women than in men. However, to date, no satisfactory oral treatment is yet available.
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EGFR as a potential therapeutic target for a subset of muscle-invasive bladder cancers presenting a basal-like phenotype.
Sci Transl Med
PUBLISHED: 07-11-2014
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Muscle-invasive bladder carcinoma (MIBC) constitutes a heterogeneous group of tumors with a poor outcome. Molecular stratification of MIBC may identify clinically relevant tumor subgroups and help to provide effective targeted therapies. From seven series of large-scale transcriptomic data (383 tumors), we identified an MIBC subgroup accounting for 23.5% of MIBC, associated with shorter survival and displaying a basal-like phenotype, as shown by the expression of epithelial basal cell markers. Basal-like tumors presented an activation of the epidermal growth factor receptor (EGFR) pathway linked to frequent EGFR gains and activation of an EGFR autocrine loop. We used a 40-gene expression classifier derived from human tumors to identify human bladder cancer cell lines and a chemically induced mouse model of bladder cancer corresponding to human basal-like bladder cancer. We showed, in both models, that tumor cells were sensitive to anti-EGFR therapy. Our findings provide preclinical proof of concept that anti-EGFR therapy can be used to target a subset of particularly aggressive MIBC tumors expressing basal cell markers and provide diagnostic tools for identifying these tumors.
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Long-term follow-up of TaG1 non-muscle-invasive bladder cancer.
Urol. Oncol.
PUBLISHED: 05-27-2014
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To retrospectively assess the long-term outcome of patients initially diagnosed with TaG1 non-muscle-invasive bladder cancer (NMIBC) with no immediate postoperative instillation of intravesical chemotherapy and evaluate the reproducibility of the European Organization for Research and Treatment of Cancer (EORTC) scoring system for predicting bladder cancer outcome.
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Quality of life of 1276 elderly patients with prostate cancer, starting treatment with a gonadotropin-releasing hormone agonist: results of a French observational study.
Aging Male
PUBLISHED: 02-27-2014
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This French observational, longitudinal, prospective study described the health-related quality of life (HRQoL) of elderly men (?75 years old) with prostate cancer after initiating gonadotropin-releasing hormone (GnRH) agonist therapy. At baseline and 3-6 months after baseline, European Organisation for Research and Treatment of Cancer quality of life questionnaire-core 30 (QLQ-C30) and prostate-specific (QLQ-PR25) questionnaires were completed by patients. Data from 1276 patients were analyzed. At baseline, mean (±SD) age was 80 (±4.1) years, 29.1% of patients had Gleason scores ?8 and 24.9% had metastases. At baseline, increasing age, presence of metastasis and presence of comorbidity had a negative impact on QLQ-C30 and QLQ-PR25 scores. At follow-up, improvement in emotional-functioning (2.8; p?
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Assessment of diagnostic gain with hexaminolevulinate (HAL) in the setting of newly diagnosed non-muscle-invasive bladder cancer with positive results on urine cytology.
Urol. Oncol.
PUBLISHED: 02-02-2014
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In accordance with the European Association of Urology guidelines, a second transurethral resection of the bladder (TURB) is recommended for high-grade or T1-category tumors. This practice brings into question the benefit of photodynamic diagnosis (PDD) in reducing the residual disease after TURB in patients with positive results on urine cytology showing high-grade cancer cells.
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Long-term women-reported quality of life after radical cystectomy and orthotopic ileal neobladder reconstruction.
Ann. Surg. Oncol.
PUBLISHED: 01-01-2014
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The purpose of this study was to determine health-related quality of life (HRQoL) among long-term disease-free survivors in women who underwent radical cystectomy (RC) for urothelial carcinoma and orthotopic ileal neobladder (ONB) reconstruction, using validated patient-reported outcome instruments.
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EAU Guidelines on Muscle-invasive and Metastatic Bladder Cancer: Summary of the 2013 Guidelines.
Eur. Urol.
PUBLISHED: 11-19-2013
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The European Association of Urology (EAU) guidelines panel on Muscle-invasive and Metastatic bladder cancer (BCa) updates its guidelines yearly. This updated summary provides a synthesis of the 2013 guidelines document, with emphasis on the latest developments.
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[Home-based zoledronic acid infusion therapy in patients with solid tumours: compliance and patient-nurse satisfaction].
Bull Cancer
PUBLISHED: 03-23-2013
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To explore patient and nurse satisfaction, compliance with best practice, technical feasibility and safety of home infusion of a bisphosphonate.
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EAU guidelines on primary urethral carcinoma.
Eur. Urol.
PUBLISHED: 03-12-2013
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The European Association of Urology (EAU) Guidelines Group on Muscle-Invasive and Metastatic Bladder Cancer prepared these guidelines to deliver current evidence-based information on the diagnosis and treatment of patients with primary urethral carcinoma (UC).
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PI3K/AKT pathway activation in bladder carcinogenesis.
Int. J. Cancer
PUBLISHED: 02-21-2013
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The PI3K/AKT pathway is considered to play a major role in bladder carcinogenesis, but its relationships with other molecular alterations observed in bladder cancer remain unknown. We investigated PI3K/AKT pathway activation in a series of human bladder urothelial carcinomas (UC) according to PTEN expression, PTEN deletions and FGFR3, PIK3CA, KRAS, HRAS, NRAS and TP53 gene mutations. The series included 6 normal bladder urothelial samples and 129 UC (Ta n = 25, T1 n = 34, T2-T3-T4 n = 70). Expression of phospho-AKT (pAKT), phospho-S6-Ribosomal Protein (pS6) (one downstream effector of PI3K/AKT pathway) and PTEN was evaluated by reverse phase protein Array. Expression of miR-21, miR-19a and miR-222, known to regulate PTEN expression, was also evaluated. pAKT expression levels were higher in tumors than in normal urothelium (p < 0.01), regardless of stage and showed a weak and positive correlation with pS6 (Spearman coefficient RS = 0.26; p = 0.002). No association was observed between pAKT or pS6 expression and the gene mutations studied. PTEN expression was decreased in PTEN-deleted tumors, and in T1 (p = 0.0089) and T2-T3-T4 (p < 0.001) tumors compared to Ta tumors; it was also negatively correlated with miR-19a (RS = -0.50; p = 0.0088) and miR-222 (RS = -0.48; p = 0.0132), but not miR-21 (RS = -0.27; p = 0.18) expression. pAKT and PTEN expressions were not negatively correlated, and, on the opposite, a positive and moderate correlation was observed in Ta (RS = 0.54; p = 0.0056) and T1 (RS = 0.56; p = 0.0006) tumors. Our study suggests that PI3K/AKT pathway activation occurs in the entire spectrum of bladder UC regardless of stage or known most frequent molecular alterations, and independently of low PTEN expression.
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VEGFR1 single nucleotide polymorphisms associated with outcome in patients with metastatic renal cell carcinoma treated with sunitinib - a multicentric retrospective analysis.
Acta Oncol
PUBLISHED: 02-20-2013
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Abstract Background. There are no validated markers that predict outcome in metastatic renal cell cancer (mRCC) patients treated with sunitinib. Recently, single nucleotide polymorphism (SNP) rs9582036 in VEGFR1 has been proposed as a predictor of progression-free survival (PFS) and overall survival (OS) to bevacizumab in patients with pancreatic cancer and rs7993418 in VEGFR1 as predictor for PFS in mRCC-patients treated with bevacizumab. Here, we aim to study the impact of these SNPs in mRCC patients treated with sunitinib. Methods. We included patients with mRCC treated in 15 institutions in France and Belgium. Patients received sunitinib as first-line targeted therapy. We assessed response, time-to-tumor progression (TTP), OS, and clinical and biochemical parameters associated with outcome. We genotyped rs9582036 and rs7993418 as well as three other surrounding SNPs in VEGFR1: rs9554320, rs9554316 and rs9513070. Association between SNPs and treatment outcome were studied by univariate analysis and by multivariate Cox regression using relevant clinical factors associated with TTP and OS as covariates. Findings. Ninety-one patients were included. We found that mRCC patients with the CC-variant in rs9582036 in VEGFR1 have a poorer response rate (RR) (0% vs. 46%, p = 0.028), a poorer PFS (10 vs. 18 months, p = 0.033 on univariate and 0.06 on multivariate analysis) and a poorer OS (14 vs. 31 months, p = 0.019 on univariate and 0.008 on multivariate analysis) compared to patients with the AC- and AA-genotypes. mRCC patients with the AA-variant in rs9554320 in VEGFR1 have a poorer PFS (12 vs. 21 months, p = 0.0066 on univariate and 0.005 on multivariate analysis) and a poorer OS (22 vs. 34 months, p = 0.019 on univariate and 0.067 on multivariate analysis) compared to patients with the AC- and CC-genotypes. Interpretation. mRCC patients with the CC-genotype in VEGFR1 SNP rs9582036 have a poorer response rate, PFS and OS when treated with sunitinib. These findings are in agreement with the association of rs9582036 and outcome observed in bevacizumab treated pancreatic cancer patients. Prospective validation of this SNP is warranted.
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An essential role for decorin in bladder cancer invasiveness.
EMBO Mol Med
PUBLISHED: 02-19-2013
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Muscle-invasive forms of urothelial carcinomas are responsible for most mortality in bladder cancer. Finding new treatments for invasive bladder tumours requires adequate animal models to decipher the mechanisms of progression, in particular the way tumours interact with their microenvironment. Herein, using the murine bladder tumour cell line MB49 and its more aggressive variant MB49-I, we demonstrate that the adaptive immune system efficiently limits progression of MB49, whereas MB49-I has lost tumour antigens and is insensitive to adaptive immune responses. Furthermore, we unravel a parallel mechanism developed by MB49-I to subvert its environment: de novo secretion of the proteoglycan decorin. We show that decorin overexpression in the MB49/MB49-I model is required for efficient progression, by promoting angiogenesis and tumour cell invasiveness. Finally, we show that these results are relevant to muscle-invasive human bladder carcinomas, which overexpress decorin together with angiogenesis- and adhesion/migration-related genes, and that decorin overexpression in the human bladder carcinoma cell line TCCSUP is required for efficient invasiveness in vitro. We thus propose decorin as a new therapeutic target for these aggressive tumours.
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Involvement of connexins 43 and 45 in functional mechanism of human detrusor overactivity in neurogenic bladder.
Urology
PUBLISHED: 01-20-2013
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To assess the involvement of connexins (Cxs) 43 and 45 in the selective inhibition of detrusor contractions in patients with neurogenic detrusor overactivity (NDO).
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Home-based zoledronic acid infusion therapy in patients with solid tumours: compliance and patient-nurse satisfaction.
Support Care Cancer
PUBLISHED: 01-09-2013
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This study aimed to explore patient and nurse satisfaction, compliance with best practice, technical feasibility and safety of home infusion of the bisphosphonate zoledronic acid (ZOL).
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High incidence of predominant Gleason pattern 4 localized prostate cancer is associated with low serum testosterone.
J. Urol.
PUBLISHED: 02-18-2011
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We characterized the aggressiveness of prostate cancer by Gleason score and predominant Gleason pattern in relation to preoperative serum testosterone.
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A novel epigenetic phenotype associated with the most aggressive pathway of bladder tumor progression.
J. Natl. Cancer Inst.
PUBLISHED: 12-20-2010
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Epigenetic silencing can extend to whole chromosomal regions in cancer. There have been few genome-wide studies exploring its involvement in tumorigenesis.
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Educational tool-kit on diet and exercise: survey of prostate cancer patients about to receive androgen deprivation therapy.
Urology
PUBLISHED: 04-27-2010
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To test a tool-kit designed to improve well-being in patients with prostate cancer. Lifestyle changes might lessen the metabolic, cardiovascular, and osseous side effects of androgen deprivation therapy (ADT) in prostate cancer patients.
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Combination of alfuzosin and tadalafil exerts an additive relaxant effect on human detrusor and prostatic tissues in vitro.
Eur. Urol.
PUBLISHED: 02-23-2009
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Lower urinary tract symptoms (LUTS) suggestive of benign prostatic hyperplasia (BPH) and erectile dysfunction (ED) are highly prevalent in aging men and are strongly linked. Alpha?-blockers such as alfuzosin are effective monotherapies for LUTS. Phosphodiesterase type 5 (PDE5) inhibitors such as tadalafil are the first-line treatment for ED. Both drugs act by two different mechanisms of action on common urogenital target organs and, thus, may have additive effects.
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Combination of doxazosin and sildenafil exerts an additive relaxing effect compared with each compound alone on human cavernosal and prostatic tissue.
J Sex Med
PUBLISHED: 01-16-2009
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Phosphodiesterase 5 inhibitors (PDE5) such as sildenafil are first-line treatment for erectile dysfunction (ED). Alpha1 (alpha1)-adrenoceptor antagonists such as doxazosin are indicated for the treatment of patients with lower urinary tract symptoms (LUTS)/benign prostatic hyperplasia (BPH). ED and LUTS/BPH are conditions that are often associated. Accordingly, alpha1-adrenoceptor antagonists and PDE5 inhibitors will be often prescribed in real life setting together.
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A meta-analysis of the relationship between FGFR3 and TP53 mutations in bladder cancer.
PLoS ONE
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TP53 and FGFR3 mutations are the most common mutations in bladder cancers. FGFR3 mutations are most frequent in low-grade low-stage tumours, whereas TP53 mutations are most frequent in high-grade high-stage tumours. Several studies have reported FGFR3 and TP53 mutations to be mutually exclusive events, whereas others have reported them to be independent. We carried out a meta-analysis of published findings for FGFR3 and TP53 mutations in bladder cancer (535 tumours, 6 publications) and additional unpublished data for 382 tumours. TP53 and FGFR3 mutations were not independent events for all tumours considered together (OR?=?0.25 [0.18-0.37], p?=?0.0001) or for pT1 tumours alone (OR?=?0.47 [0.28-0.79], p?=?0.0009). However, if the analysis was restricted to pTa tumours or to muscle-invasive tumours alone, FGFR3 and TP53 mutations were independent events (OR?=?0.56 [0.23-1.36] (p?=?0.12) and OR?=?0.99 [0.37-2.7] (p?=?0.35), respectively). After stratification of the tumours by stage and grade, no dependence was detected in the five tumour groups considered (pTaG1 and pTaG2 together, pTaG3, pT1G2, pT1G3, pT2-4). These differences in findings can be attributed to the putative existence of two different pathways of tumour progression in bladder cancer: the CIS pathway, in which FGFR3 mutations are rare, and the Ta pathway, in which FGFR3 mutations are frequent. TP53 mutations occur at the earliest stage of the CIS pathway, whereas they occur would much later in the Ta pathway, at the T1G3 or muscle-invasive stage.
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Perivesical fat invasion in bladder cancer: implications for prognosis comparing pT2b, pT3a and pT3b stages and consequences for adjuvant chemotherapy indications.
BJU Int.
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Study Type--Therapy (retrospective cohort) Level of Evidence 2b. Whats known on the subject? and What does the study add? The more that bladder cancer progresses from the urothelium to the outside of the bladder the worse the prognosis. To date, the use of adjuvant chemotherapy has not been completely defined. The present study clarifies the prognosis and benefits of adjuvant chemotherapy for different stages of bladder cancer that invade perivesical fat.
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Evaluation of sexuality, health-related quality-of-life and depression in advanced cancer patients: a prospective study in a Phase I clinical trial unit of predominantly targeted anticancer drugs.
Eur. J. Cancer
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The advent of molecular targeted agents (MTA) has opened a new era of therapy in oncology. However, some of the toxicities and side-effects of these new drugs are not explored as is the case with the potential impact of MTA on sexuality. This study aimed to prospectively evaluate health-related quality of life (HRQoL), depression and sexual function in advanced cancer patients treated in a Phase I drug unit evaluating MTA. PATENTS AND METHODS: In total, 63 of 74 eligible patients agreed to participate in the study. Four validated self-questionnaires were used: the Medical Outcomes Study Short-Form General Health Survey (SF12), the short form Beck Depression Inventory (BDI), the International Index of Erectile Function (IIEF) and the Female Sexual Function Index (FSFI). Forty-seven patients (75%) responded at baseline and 31 (65%) at 1-month.
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Patterns of local recurrence after radical cystectomy in a contemporary series of patients with muscle-invasive bladder cancer.
World J Urol
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To describe the epidemiology, clinical features, and prognostic factors of local recurrence (LR) in a large case series of patients treated by radical cystectomy (RC) for bladder cancer.
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Evaluating single-incision slings in female stress urinary incontinence: the usefulness of the CONSORT statement criteria.
Urology
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To evaluate the usefulness and applicability of the Consolidated Standards of Reporting Trials (CONSORT) for journal articles reporting randomized, controlled trials evaluating single-incision slings in the treatment of female stress urinary incontinence.
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Indication and timing of cystectomy in high-risk bladder cancer.
Curr Opin Urol
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Although the conservative approach including Bacillus Calmette-Guerin (BCG) therapy is considered as the first-line option in high-risk nonmuscle invasive bladder tumors, cystectomy is often required as an alternative treatment in the case of BCG failure. Considering all the parameters, including clinical data, endoscopic aspects and new biological markers, the question of the indication, and moreover timing, of cystectomy has become crucial.
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Deregulation of Rab and Rab effector genes in bladder cancer.
PLoS ONE
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Growing evidence indicates that Rab GTPases, key regulators of intracellular transport in eukaryotic cells, play an important role in cancer. We analysed the deregulation at the transcriptional level of the genes encoding Rab proteins and Rab-interacting proteins in bladder cancer pathogenesis, distinguishing between the two main progression pathways so far identified in bladder cancer: the Ta pathway characterized by a high frequency of FGFR3 mutation and the carcinoma in situ pathway where no or infrequent FGFR3 mutations have been identified. A systematic literature search identified 61 genes encoding Rab proteins and 223 genes encoding Rab-interacting proteins. Transcriptomic data were obtained for normal urothelium samples and for two independent bladder cancer data sets corresponding to 152 and 75 tumors. Gene deregulation was analysed with the SAM (significant analysis of microarray) test or the binomial test. Overall, 30 genes were down-regulated, and 13 were up-regulated in the tumor samples. Five of these deregulated genes (LEPRE1, MICAL2, RAB23, STXBP1, SYTL1) were specifically deregulated in FGFR3-non-mutated muscle-invasive tumors. No gene encoding a Rab or Rab-interacting protein was found to be specifically deregulated in FGFR3-mutated tumors. Cluster analysis showed that the RAB27 gene cluster (comprising the genes encoding RAB27 and its interacting partners) was deregulated and that this deregulation was associated with both pathways of bladder cancer pathogenesis. Finally, we found that the expression of KIF20A and ZWINT was associated with that of proliferation markers and that the expression of MLPH, MYO5B, RAB11A, RAB11FIP1, RAB20 and SYTL2 was associated with that of urothelial cell differentiation markers. This systematic analysis of Rab and Rab effector gene deregulation in bladder cancer, taking relevant tumor subgroups into account, provides insight into the possible roles of Rab proteins and their effectors in bladder cancer pathogenesis. This approach is applicable to other group of genes and types of cancer.
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CDKN2A homozygous deletion is associated with muscle invasion in FGFR3-mutated urothelial bladder carcinoma.
J. Pathol.
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The gene cyclin-dependent kinase inhibitor 2A (CDKN2A) is frequently inactivated by deletion in bladder carcinoma. However, its role in bladder tumourigenesis remains unclear. We investigated the role of CDKN2A deletion in urothelial carcinogenesis, as a function of FGFR3 mutation status, a marker for one of the two pathways of bladder tumour progression, the Ta pathway. We studied 288 bladder carcinomas: 177 non-muscle-invasive (123 Ta, 54 T1) and 111 muscle-invasive (T2-4) tumours. CDKN2A copy number was determined by multiplex ligation-dependent probe amplification, and FGFR3 mutations by SNaPshot analysis. FGFR3 mutation was detected in 124 tumours (43.1%) and CDKN2A homozygous deletion in 56 tumours (19.4%). CDKN2A homozygous deletion was significantly more frequent in FGFR3-mutated tumours than in wild-type FGFR3 tumours (p = 0.0015). This event was associated with muscle-invasive tumours within the FGFR3-mutated subgroup (p < 0.0001) but not in wild-type FGFR3 tumours. Similar findings were obtained for an independent series of 101 bladder carcinomas. The impact of CDKN2A deletions on recurrence-free and progression-free survival was then analysed in 89 patients with non-muscle-invasive FGFR3-mutated tumours. Kaplan-Meier survival analysis showed that CDKN2A losses (hemizygous and homozygous) were associated with progression (p = 0.0002), but not with recurrence, in these tumours. Multivariate Cox regression analysis identified CDKN2A loss as a predictor of progression independent of stage and grade. These findings highlight the crucial role of CDKN2A loss in the progression of non-muscle-invasive FGFR3-mutated bladder carcinomas and provide a potentially useful clinical marker for adapting the treatment of such tumours, which account for about 50% of cases at initial clinical presentation.
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What is Visualize?

JoVE Visualize is a tool created to match the last 5 years of PubMed publications to methods in JoVE's video library.

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We use abstracts found on PubMed and match them to JoVE videos to create a list of 10 to 30 related methods videos.

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In developing our video relationships, we compare around 5 million PubMed articles to our library of over 4,500 methods videos. In some cases the language used in the PubMed abstracts makes matching that content to a JoVE video difficult. In other cases, there happens not to be any content in our video library that is relevant to the topic of a given abstract. In these cases, our algorithms are trying their best to display videos with relevant content, which can sometimes result in matched videos with only a slight relation.