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prostate cancer progression

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https://www.readbyqxmd.com/read/28092670/neuropilin-1-is-upregulated-in-the-adaptive-response-of-prostate-tumors-to-androgen-targeted-therapies-and-is-prognostic-of-metastatic-progression-and-patient-mortality
#1
B W C Tse, M Volpert, E Ratther, N Stylianou, M Nouri, K McGowan, M L Lehman, S J McPherson, M Roshan-Moniri, M S Butler, J Caradec, C Y Gregory-Evans, J McGovern, R Das, M Takhar, N Erho, M Alshalafa, E Davicioni, E M Schaeffer, R B Jenkins, A E Ross, R J Karnes, R B Den, L Fazli, P A Gregory, M E Gleave, E D Williams, P S Rennie, R Buttyan, J H Gunter, L A Selth, P J Russell, C C Nelson, B G Hollier
Recent evidence has implicated the transmembrane co-receptor neuropilin-1 (NRP1) in cancer progression. Primarily known as a regulator of neuronal guidance and angiogenesis, NRP1 is also expressed in multiple human malignancies, where it promotes tumor angiogenesis. However, non-angiogenic roles of NRP1 in tumor progression remain poorly characterized. In this study, we define NRP1 as an androgen-repressed gene whose expression is elevated during the adaptation of prostate tumors to androgen-targeted therapies (ATTs), and subsequent progression to metastatic castration-resistant prostate cancer (mCRPC)...
January 16, 2017: Oncogene
https://www.readbyqxmd.com/read/28089830/tumor-suppressor-spop-ubiquitinates-and-degrades-egln2-to-compromise-growth-of-prostate-cancer-cells
#2
Linli Zhang, Shan Peng, Xiangpeng Dai, Wenjian Gan, Xin Nie, Wenyi Wei, Guoqing Hu, Jianping Guo
EglN prolyl hydroxylases, a family of oxygen-sensing enzymes, hydroxylate distinct proteins to modulate diverse physiopathological signals. Aberrant regulations of EglNs result in multiple human diseases, including cancer. Different from EglN1 which function largely depends on the role of hypoxia-induce factor alpha (HIFα) in tumors, the functional significance and the upstream regulatory mechanisms of EglN2, especially in prostate cancer setting, remain largely unclear. Here, we demonstrated that dysregulation of EglN2 facilitated prostate cancer growth both in cells and in vivo...
January 13, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28089723/cost-effectiveness-of-the-decipher-genomic-classifier-to-guide-individualized-decisions-for-early-radiation-therapy-after-prostatectomy-for-prostate-cancer
#3
Jennifer M Lobo, Daniel M Trifiletti, Vanessa N Sturz, Adam P Dicker, Christine Buerki, Elai Davicioni, Matthew R Cooperberg, R Jeffrey Karnes, Robert B Jenkins, Robert B Den, Timothy N Showalter
BACKGROUND: Controversy exists regarding the effectiveness of early adjuvant versus salvage radiation therapy after prostatectomy for prostate cancer. Estimates of prostate cancer progression from the Decipher genomic classifier (GC) could guide informed decision-making and improve the outcomes for patients. MATERIALS AND METHODS: We developed a Markov model to compare the costs and quality-adjusted life years (QALYs) associated with GC-based treatment decisions regarding adjuvant therapy after prostatectomy with those of 2 control strategies: usual care (determined from patterns of care studies) and the alternative of 100% adjuvant radiation therapy...
August 17, 2016: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28088885/-androgen-receptor-mediated-processes-in-castrate-resistant-metastatic-prostate-cancer
#4
Zsófia Küronya, Krisztina Bíró, Fruzsina Gyergyay, Lajos Géczi
In the past six years, five new drugs have been approved by the FDA for the treatment of metastatic castrate-resistant prostate cancer. While the disease itself still remains incurable, the sequential use of these drugs can significantly prolong survival while maintaining good quality of life. Research from the past decade made it clear that androgen receptor-mediated processes play a central part in the progression of the disease. Hormonal mechanisms related to androgen-receptors can remain active until late stages of the disease...
January 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28086943/a-lifestyle-intervention-among-elderly-men-on-active-surveillance-for-non-aggressive-prostate-cancer-a-randomised-feasibility-study-with-whole-grain-rye-and-exercise
#5
Anne Kirstine Eriksen, Rikke Dalgaard Hansen, Michael Borre, Ryan Godsk Larsen, Jeppe Munthe Jensen, Kristian Overgaard, Mette Borre, Cecilie Kyrø, Rikard Landberg, Anja Olsen, Anne Tjønneland
BACKGROUND: The prognosis for men with non-aggressive prostate cancer is good, and several studies have investigated the impact of lifestyle changes including physical activity and diet on the prognosis. Despite positive results in animal studies and a few human interventions with whole-grain rye on markers of prostate cancer progression, the feasibility of trials investigating such dietary changes in combination with physical activity remains largely unstudied. The primary aim was to investigate the feasibility of an intervention with high whole-grain rye intake and vigorous physical activity for 6 months in men diagnosed with prostate cancer...
January 13, 2017: Trials
https://www.readbyqxmd.com/read/28078223/testosterone-therapy-and-prostate-cancer
#6
REVIEW
Alexander W Pastuszak, Katherine M Rodriguez, Taylor M Nguyen, Mohit Khera
The use of exogenous testosterone to treat hypogonadism in the men with a history of prostate cancer (CaP) remains controversial due to fears of cancer recurrence or progression. Due to the detrimental impact of hypogonadism on patient quality of life, recent work has examined the safety of testosterone therapy (TTh) in men with a history of CaP. In this review, we evaluate the literature with regards to the safety of TTh in men with a history of CaP. TTh results in improvements in quality of life with little evidence of biochemical recurrence or progression in men with a history of CaP, or de novo cancer in unaffected men...
December 2016: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28077787/androgen-suppresses-protein-kinase-d1-expression-through-fibroblast-growth-factor-receptor-substrate-2-in-prostate-cancer-cells
#7
Liyong Zhang, Zhenlong Zhao, Shuping Xu, Manuj Tandon, Courtney R LaValle, Fan Deng, Q Jane Wang
In prostate cancer, androgen/androgen receptor (AR) and their downstream targets play key roles in all stages of disease progression. The protein kinase D (PKD) family, particularly PKD1, has been implicated in prostate cancer biology. Here, we examined the cross-regulation of PKD1 by androgen signaling in prostate cancer cells. Our data showed that the transcription of PKD1 was repressed by androgen in androgen-sensitive prostate cancer cells. Steroid depletion caused up regulation of PKD1 transcript and protein, an effect that was reversed by the AR agonist R1881 in a time- and concentration-dependent manner, thus identifying PKD1 as a novel androgen-repressed gene...
January 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28077171/prostate-specific-il-6-transgene-autonomously-induce-prostate-neoplasm-through-amplifying-inflammation-in-the-prostate-and-peri-prostatic-adipose-tissue
#8
Gang Liu, Jinyu Zhang, Lewis Frey, Xiao Gang, Kongming Wu, Qian Liu, Michael Lilly, Jennifer Wu
BACKGROUND: The causative role of the pro-inflammatory cytokine IL-6 in prostate cancer progression has been well established at molecular level. However, whether and how IL-6 may play a role in prostate cancer risk and development is not well defined. One limitation factor to acquiring this knowledge is the lack of appropriate animal models. METHODS: We generated a novel line of prostate-specific IL-6 transgenic mouse model. We compared the prostate pathology, tumorigenic signaling components, and prostate tumor microenvironment of the IL-6 transgenic mice with wild type littermates...
January 11, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28075651/imaging-characteristics-of-prostate-cancer-patients-who-discontinued-active-surveillance-on-3-t-multiparametric-prostate-mri
#9
David J Habibian, Corinne C Liu, Alex Dao, Kaitlin E Kosinski, Aaron E Katz
OBJECTIVE: Early-stage prostate cancer may be followed with active surveillance to avoid overtreatment. Our institution's active surveillance regimen uses annual MRI in place of serial biopsies, and biopsies are performed only when clinically necessary. The objective of our study was to report the multiparametric MRI characteristics of prostate cancer patients who discontinued active surveillance at our institution after repeat imaging revealed possible evidence of tumor upgrading. MATERIALS AND METHODS: The Department of Urology at Winthrop University Hospital prospectively maintains a database of prostate cancer patients who are monitored with active surveillance...
January 11, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28075160/can-we-accomplish-better-oncological-results-with-robot-assisted-radical-prostatectomy
#10
Ali Riza Kural, Can Obek, Tünkut Doğanca
Surgical removal with radical prostatectomy has been a cornerstone for the treatment of prostate cancer and is associated with level one evidence for survival advantage compared to watchful waiting. Since the first structured robotic program was launched in 2000, robot-assisted radical prostatectomy (RARP) has had a rapid diffusion and surpassed its open (ORP) and laparoscopic (LRP) counterparts in the United States and is progressively expanding in other countries. Interestingly, this common acceptance of RARP was initially driven in the paucity of robust clinical evidence...
January 11, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28074993/-fatal-interstitial-lung-disease-associated-with-maximum-androgen-blockade
#11
Guillermo Molina Mancero, Xavier Picón, Fernando Di Tullio, Glenda Ernst, Pablo Dezanzo, Alejandro Salvado, Julio F Chertcoff
Maximum androgen blockade is the standard endocrine treatment for advanced prostate cancer. Interstitial lung disease in different degrees of severity, with low mortality and excellent response to treatment may appear with its use. We report a 77 years old patient with advanced prostate cancer who developed severe and progressive respiratory failure associated to bilateral pulmonary infiltrates, attributed to the direct effect of maximum androgen blockade. Despite the therapeutic efforts, the patient died. Lung pathology revealed Usual Interstitial Pneumonia...
October 2016: Revista Médica de Chile
https://www.readbyqxmd.com/read/28072703/screening-the-key-micrornas-and-transcription-factors-in-prostate-cancer-based-on-microrna-functional-synergistic-relationships
#12
Fan Feng, Jitao Wu, Zhenli Gao, Shengqiang Yu, Yuanshan Cui
Prostate cancer (PC) is a common neoplasm, and metastatic PC remains incurable. The study aims to screen key microRNAs (miRNAs) and transcription factors (TFs) involved in PC.The miRNA expression profile dataset (GSE45604) was downloaded from Gene Expression Omnibus database, including 50 PC and 10 normal specimens. Differentially expressed miRNAs (DEmiRNAs) were identified through limma package in R, and DEmiRNA-DEmiRNA co-regulation network was constructed based on the number of co-regulated target genes...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28068638/knockdown-of-foxr2-suppresses-the-tumorigenesis-growth-and-metastasis-of-prostate-cancer
#13
Weibo Xu, Junkai Chang, Guangchao Liu, Xinyi Du, Xiaodong Li
Fork-head box R2 (FOXR2), a member of FOX protein family, was reported to play important roles in the development and progression of cancers. However, the expression and function of FOXR2 in prostate cancer remain unclear. In this study, we investigated the role of FOXR2 in prostate cancer and cancer progression including the molecular mechanism that drives FOXR2-mediated oncogenesis. Our results showed that FOXR2 was overexpressed in prostate cancer cell lines. The in vitro experiments demonstrated that knockdown of FOXR2 significantly repressed the proliferation, migration and invasiveness of prostate cancer cells...
January 6, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28068602/synthesis-of-2-3-6-7-tetramethoxyphenanthren-9-amine-an-efficient-precursor-to-access-new-4-aza-2-3-dihydropyridophenanthrenes-as-apoptosis-inducing-agents
#14
Niggula Praveen Kumar, Pankaj Sharma, T Srinivasa Reddy, Shalini Nekkanti, Nagula Shankaraiah, Guntuku Lalita, S Sujanakumari, Suresh K Bhargava, V G M Naidu, Ahmed Kamal
A new route for the synthesis of novel 2,3,6,7-tetramethoxy phenanthrene amine precursor has been successfully accomplished. Subsequently, this amine precursor has been directly utilized for the synthesis of a new series of 4-aza-2,3-dihydropyridophenanthrene derivatives via a three component reaction with tetronic acid and substituted aldehydes. These compounds were evaluated for their cytotoxic potential against human lung (A549), prostate (PC-3 and DU145), breast (MDA-MB-231 and 4T1), gastric (HGC-27), colon (Caco-2) and cervical (HeLa) cancer cell lines...
January 3, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28068243/sentinel-lymph-node-dissection-to-select-clinically-node-negative-prostate-cancer-patients-for-pelvic-radiation-therapy-effect-on-biochemical-recurrence-and-systemic-progression
#15
Nikolaos Grivas, Esther Wit, Floris Pos, Jeroen de Jong, Erik Vegt, Axel Bex, Kees Hendricksen, Simon Horenblas, Gijs KleinJan, Bas van Rhijn, Henk van der Poel
PURPOSE: To assess the efficacy of robotic-assisted laparoscopic sentinel lymph node (SLN) dissection (SLND) to select those patients with prostate cancer (PCa) who would benefit from additional pelvic external beam radiation therapy and long-term androgen deprivation therapy (ADT). METHODS AND MATERIALS: Radioisotope-guided SLND was performed in 224 clinically node-negative patients scheduled to undergo external beam radiation therapy. Patients with histologically positive SLNs (pN1) were also offered radiation therapy to the pelvic lymph nodes, combined with 3 years of ADT...
February 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28068151/prognostic-impact-of-pretreatment-neutrophil-to-lymphocyte-ratio-in-castration-resistant-prostate-cancer-patients-treated-with-first-line-docetaxel
#16
Consuelo Buttigliero, Chiara Pisano, Marcello Tucci, Francesca Vignani, Valentina Bertaglia, Davide Iaconis, Pamela Guglielmini, Gianmauro Numico, Giorgio V Scagliotti, Massimo Di Maio
BACKGROUND: The neutrophil-to-lymphocyte ratio (NLR), a measure of systemic inflammatory response, has been associated with poor outcome in several solid tumors, including prostate cancer. We retrospectively investigated the prognostic role of pretreatment NLR in metastatic castration-resistant prostate cancer (mCRPC) patients treated with first-line docetaxel. METHODS: All CRPC patients treated with first-line docetaxel at two Italian institutions, with available data about baseline neutrophil and lymphocyte values, were included in this retrospective analysis...
January 9, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28064545/androgen-receptor-activation-a-prospective-therapeutic-target-for-bladder-cancer
#17
Taichi Mizushima, Kathleen A Tirador, Hiroshi Miyamoto
Patients with non-muscle-invasive or muscle-invasive bladder cancer undergoing surgery and currently available conventional therapy remain having a high risk of tumor recurrence or progression, respectively. Novel targeted molecular therapy is therefore expected to improve patient outcomes. Meanwhile, substantially higher incidence of bladder cancer in men has prompted research on androgen-mediated androgen receptor (AR) signaling in this malignancy. Indeed, preclinical evidence has suggested that AR signaling plays an important role in urothelial carcinogenesis and tumor outgrowth as well as resistance to some of the currently available conventional non-surgical therapies...
January 9, 2017: Expert Opinion on Therapeutic Targets
https://www.readbyqxmd.com/read/28063845/comparative-assessment-of-efficacies-between-2%C3%A2-alternative-therapeutic-sequences-with-novel%C3%A2-androgen-receptor-axis-targeted-agents%C3%A2-in-patients-with-chemotherapy-na%C3%A3-ve-metastatic-castration-resistant-prostate-cancer
#18
Hideaki Miyake, Takuto Hara, Keita Tamura, Takayuki Sugiyama, Hiroshi Furuse, Seiichiro Ozono, Masato Fujisawa
BACKGROUND: The objective of this study was to compare the efficacies of sequential therapies with novel androgen receptor-axis-targeted (ARAT) agents in patients with docetaxel-naïve metastatic castration-resistant prostate cancer (mCRPC). PATIENTS AND METHODS: This study included 108 consecutive patients with mCRPC who sequentially received abiraterone acetate (AA) and enzalutamide (Enz), in either order, without prior treatment with docetaxel. The combined prostate-specific antigen (PSA) progression-free survival (PFS) was defined as the sum of PFS1 and PFS2, representing PSA PFSs on the first and second ARAT agents, respectively...
December 22, 2016: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28063195/first-line-non-cytotoxic-therapy-in-chemotherapy-naive-patients-with-metastatic-castration-resistant-prostate-cancer-a-systematic-review-of-ten-randomised-clinical-trials
#19
REVIEW
Michiel H F Poorthuis, Robin W M Vernooij, R Jeroen A van Moorselaar, Theo M de Reijke
OBJECTIVE: To systematically evaluate all available treatment options in chemotherapy-naive patients with metastatic castration-resistant prostate cancer (mCRPC). METHODS: We systematically searched PubMed, EMBASE, and the Cochrane libraries up to March 1, 2016 for peer-reviewed publications on randomised clinical trials (RCTs). RCTs were included if progression-free survival (PFS), overall survival (OS), quality of life (QoL), or adverse events (AEs) were quantitatively evaluated...
January 6, 2017: BJU International
https://www.readbyqxmd.com/read/28063191/salvage-high-intensity-focused-ultrasound-hifu-for-locally-recurrent-prostate-cancer-after-failed-radiation-therapy-multi-institutional-analysis-of-418-patients
#20
Sebastien Crouzet, Andreas Blana, Francois J Murat, Gilles Pasticier, Stephen C W Brown, Giario N Conti, Roman Ganzer, Olivier Chapet, Albert Gelet, Christian G Chaussy, Cary N Robertson, Stefan Thuroff, John F Ward
OBJECTIVE: To report the oncological outcome of Salvage high-intensity focused ultrasound (S-HIFU) for locally recurrent prostate cancer (PCa) following External Beam Radiotherapy (EBRT) from a multicenter database. MATERIALS AND METHODS: This retrospective study comprises patients from 9 centers with local recurrent disease following EBRT treated with S-HIFU from 1995 to 2009. Biochemical free survival rates (BFSR) was based on the "Phoenix" definition (nadir+2)...
January 7, 2017: BJU International
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