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metastatic prostate cancer

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https://www.readbyqxmd.com/read/29213237/effectiveness-of-deferred-combined-androgen-blockade-therapy-predicts-efficacy-in-abiraterone-acetate-treated-metastatic-castration-resistant-prostate-cancer-patients-after-docetaxel
#1
Jian-Ri Li, Kun-Yuan Chiu, Shian-Shiang Wang, Cheng-Kuang Yang, Chuan-Shu Chen, Hao-Chung Ho, Chi-Feng Hung, Chen-Li Cheng, Chi-Rei Yang, Cheng-Che Chen, Shu-Chi Wang, Chia-Yen Lin, Chao-Hsiang Chang, Chiann-Yi Hsu, Yen-Chuan Ou
Introduction: Conventional anti-androgen regimens were widely used as an initiation or combined androgen blockade (CAB) therapy in advanced prostate cancer patients. Currently, new androgen pathway inhibitors such as abiraterone acetate (AA) and enzalutamide had been proven effective in metastatic castration resistant prostate cancer. In this study, we attempt to analyze the role of conventional anti-androgen drugs as deferred CAB therapy in castration-resistant prostate cancer patients. Materials and Methods: From 2012 to 2017, 48 metastatic castration-resistant prostate cancer (CRPC) patients who received sequential treatments with primary androgen blockade, oral anti-androgen regimens, and docetaxel followed by AA treatment were included...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29212270/exosomal-mir-141-3p-regulates-osteoblast-activity-to-promote-the-osteoblastic-metastasis-of-prostate-cancer
#2
Yun Ye, Su-Liang Li, Yue-Yun Ma, Yan-Jun Diao, Liu Yang, Ming-Quan Su, Zhuo Li, Yang Ji, Juan Wang, Lin Lei, Wei-Xiao Fan, La-Xiu Li, Yi Xu, Xiao-Ke Hao
Exosomes from cancer cells, which contain microRNA and reach metastasis loci prior to cancer cells, stimulate the formation of a metastatic microenvironment. Previous studies have shown that exosomal miR-141-3p is associated with metastatic prostate cancer (PCa). However, the role and regulatory mechanism of miR-141-3p in the microenvironment of bone metastases require further study. In this study, we performed a series of experiments in vivo and in vitro to determine whether exosomal miR-141-3p from MDA PCa 2b cells regulates osteoblast activity to promote osteoblastic metastasis...
November 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/29212226/transcribed-ultraconserved-region-uc-63-promotes-resistance-to-docetaxel-through-regulation-of-androgen-receptor-signaling-in-prostate-cancer
#3
Yohei Sekino, Naoya Sakamoto, Keisuke Goto, Ririno Honma, Yoshinori Shigematsu, Kazuhiro Sentani, Naohide Oue, Jun Teishima, Akio Matsubara, Wataru Yasui
Docetaxel is the standard chemotherapy for metastatic castration-resistant prostate cancer (CRPC). However, nearly all patients ultimately become refractory due to the development of docetaxel resistance. The transcribed ultraconserved regions (T-UCRs) are a novel class of non-coding RNAs that are absolutely conserved across species and are involved in carcinogenesis including prostate cancer (PC). In this study, we investigated the transcriptional levels of 26 representative T-UCRs and determined the regions that were differentially expressed in PC...
November 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/29211777/alpha-conotoxin-buia-globular-isomer-is-a-competitive-antagonist-for-oleoyl-l-alpha-lysophosphatidic-acid-binding-to-lpar6-a-molecular-dynamics-study
#4
Saima Younis, Sajid Rashid
Lysophosphatidic acid receptor 6 (LPAR6) is a G-protein coupled receptor (GPCR) involved in hair development and cytoskeleton formation in mammals. Its proliferation is implicated in several forms of cancer including liver cancer, squamous cell carcinoma and metastatic prostate cancer. Current study emphasizes the isolation of competitive non-lipid and stable peptide antagonists for Lysophosphatidic acid ligand. A total of 148 conotoxin structures were characterized for their binding abilities against LPAR6...
2017: PloS One
https://www.readbyqxmd.com/read/29211405/high-intensity-focused-ultrasound-hifu-as-salvage-therapy-for-radio-recurrent-prostate-cancer-predictors-of-disease-response
#5
Shawn Dason, Nathan C Wong, Christopher B Allard, Jen Hoogenes, William Orovan, Bobby Shayegan
BACKGROUND: Some men with localized radio-recurrent prostate cancer may benefit from salvage high-intensity focused ultrasound (HIFU). Herein, we describe oncologic outcomes and predictors of disease response after salvage whole gland HIFU from our prospective cohort. MATERIALS AND METHODS: Patients with localized radio-recurrent prostate cancer were prospectively enrolled from January 2005 to December 2014. Participants had to meet both biochemical and histological definitions of recurrence...
December 7, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/29211320/consensus-statements-on-the-management-of-metastatic-prostate-cancer-from-the-hong-kong-urological-association-and-hong-kong-society-of-uro-oncology
#6
REVIEW
Darren Ming-Chun Poon, Chi-Kwok Chan, Tim-Wai Chan, Foon-Yiu Cheung, Philip Wai-Kay Kwong, Eric Ka-Chai Lee, Angus Kwong-Chuen Leung, Simon Yiu-Lam Leung, Wai-Kit Ma, Hing-Shing So, Po-Chor Tam, Lap-Yin Ho
OBJECTIVES: To establish a set of consensus statements to facilitate physician management strategies for patients with metastatic prostate cancer (mPC) in Hong Kong. MATERIALS AND METHODS: A local expert consensus was organised jointly by the two main professional organisations representing prostate cancer specialists in Hong Kong. A total of 12 experts were included in the consensus panel. Six of the most crucial and relevant areas of debate regarding the management of mPC were identified...
December 6, 2017: BJU International
https://www.readbyqxmd.com/read/29207991/investigation-of-c-kit-and-ki67-expression-in-normal-preneoplastic-and-neoplastic-canine-prostate
#7
Carlos Eduardo Fonseca-Alves, Priscilla Emiko Kobayashi, Chiara Palmieri, Renée Laufer-Amorim
BACKGROUND: c-KIT expression has been related to bone metastasis in human prostate cancer, but whether c-KIT expression can be similarly classified in canine prostatic tissue is unknown. This study assessed c-KIT and Ki67 expression in canine prostate cancer (PC). c-KIT gene and protein expression and Ki67 expression were evaluated in forty-four canine prostatic tissues by immunohistochemistry, RT-qPCR and western blot. Additionally, we have investigated c-KIT protein expression by immunoblotting in two primary canine prostate cancer cell lines...
December 6, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29207190/anticancer-potential-of-novel-curcumin-analogs-towards-castrate-resistant-prostate-cancer
#8
Shuli Chen, Mhairi Nimick, Andrew G Cridge, Bill C Hawkins, Rhonda J Rosengren
Prostate cancer is initially sensitive to hormone therapy; however, over time the majority of patients progress to a hormone-insensitive form classified as castration-resistant prostate cancer (CRPC). CRPC is highly metastatic and patients have a poor prognosis. Thus, new drugs for the treatment of this disease are required. In this study, we therefore examined the cytotoxic effects and anticancer mechanism(s) of action of second generation curcumin analogs towards CRPC cells. For this purpose, PC3 and DU145 cells were treated with a series of curcumin analogs at 0-10 µM for 72 h and cytotoxicity was determined by the sulforhodamine B (SRB) assay...
November 20, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/29207031/prl%C3%A2-3-increases-the-aggressive-phenotype-of-prostate-cancer-cells-in%C3%A2-vitro-and-its-expression-correlates-with-high-grade-prostate-tumors-in-patients
#9
Donna R Edwards, Krzysztof Moroz, Haitao Zhang, David Mulholland, Asim B Abdel-Mageed, Debasis Mondal
The increased expression of phosphatase of regenerating liver-3 (PRL‑3) has been shown to be associated with the aggressive and metastatic phenotype of different solid tumors. However, it is not known whether PRL‑3 plays a similar role in the progression of prostate cancer (PCa). In this study, immunoblot analysis of androgen receptor (AR)-positive PCa lines (LNCaP and LNCaP‑SF) revealed the constitutive cytoplasmic expression of PRL‑3, and stimulation with R1881 (AR agonist) rapidly increased the nuclear translocation of PRL‑3...
November 20, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/29206995/concordance-of-circulating-tumor-dna-and-matched-metastatic-tissue-biopsy-in-prostate-cancer
#10
Alexander W Wyatt, Matti Annala, Rahul Aggarwal, Kevin Beja, Felix Feng, Jack Youngren, Adam Foye, Paul Lloyd, Matti Nykter, Tomasz M Beer, Joshi J Alumkal, George V Thomas, Robert E Reiter, Matthew B Rettig, Christopher P Evans, Allen C Gao, Kim N Chi, Eric J Small, Martin E Gleave
Background: Real-time knowledge of the somatic genome can influence management of patients with metastatic castration-resistant prostate cancer (mCRPC). While routine metastatic tissue biopsy is challenging in mCRPC, plasma circulating tumor DNA (ctDNA) has emerged as a minimally invasive tool to sample the tumor genome. However, no systematic comparisons of matched "liquid" and "solid" biopsies have been performed that would enable ctDNA profiling to replace the need for direct tissue sampling...
December 1, 2017: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29206871/clopidogrel-in-a-combined-therapy-with-anticancer-drugs-effect-on-tumor-growth-metastasis-and-treatment-toxicity-studies-in-animal-models
#11
Agnieszka Denslow, Marta Świtalska, Joanna Jarosz, Diana Papiernik, Kseniia Porshneva, Marcin Nowak, Joanna Wietrzyk
Clopidogrel, a thienopyridine derivative with antiplatelet activity, is widely prescribed for patients with cardiovascular diseases. In addition to antiplatelet activity, antiplatelet agents possess anticancer and antimetastatic properties. Contrary to this, results of some studies have suggested that the use of clopidogrel and other thienopyridines accelerates the progression of breast, colorectal, and prostate cancer. Therefore, in this study, we aimed to evaluate the efficacy of clopidogrel and various anticancer agents as a combined treatment using mouse models of breast, colorectal, and prostate cancer...
2017: PloS One
https://www.readbyqxmd.com/read/29206214/immunotherapy-for-prostate-cancer-where-we-are-headed
#12
REVIEW
Giuseppe Schepisi, Alberto Farolfi, Vincenza Conteduca, Filippo Martignano, Delia De Lisi, Giorgia Ravaglia, Lorena Rossi, Cecilia Menna, Salvatore Roberto Bellia, Domenico Barone, Roberta Gunelli, Ugo De Giorgi
Prostate cancer is one of the most common malignant neoplasms in men worldwide, and is the fifth cause of cancer-related death. In recent years, a new generation of therapies have been approved for the management of metastatic disease. Moreover, the development of new immunotherapeutic drugs has become a novel frontier for the treatment of several tumor types; to date, numerous studies have investigated their potential activity, including in prostate cancer. In this article, we discuss the role of emerging immunotherapeutic drugs in prostate cancer patients...
December 5, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29204705/rankl-rank-opg-cytokine-receptor-system-mrna-expression-pattern-in-bph-primary-and-metastatic-prostate-cancer-disease
#13
Frank Christoph, Frank König, Steffen Lebentrau, Burkhard Jandrig, Hans Krause, Romy Strenziok, Martin Schostak
BACKGROUND: The cytokine system RANKL (receptor activator of NF-κB ligand), its receptor RANK and the antagonist OPG (osteoprotegerin) play a critical role in bone turnover. Our investigation was conducted to describe the gene expression at primary tumour site in prostate cancer patients and correlate the results with Gleason Score and PSA level. METHODS: Seventy-one samples were obtained from prostate cancer patients at the time of radical prostatectomy and palliative prostate resection (n = 71)...
December 4, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/29202848/downregulation-of-mir-141-3p-promotes-bone-metastasis-via-activating-nf-%C3%AE%C2%BAb-signaling-in-prostate-cancer
#14
Shuai Huang, Qingde Wa, Jincheng Pan, Xinsheng Peng, Dong Ren, Yan Huang, Xiao Chen, Yubo Tang
BACKGROUND: Clinically, prostate cancer (PCa) exhibits a high avidity to metastasize to bone. miR-141-3p is an extensively studied miRNA in cancers and downregulation of miR-141-3p has been widely reported to be involved in the progression and metastasis of several human cancer types. However, the clinical significance and biological roles of miR-141-3p in bone metastasis of PCa are still unclear. METHODS: miR-141-3p expression was examined in 89 non-bone metastatic and 52 bone metastatic PCa tissues by real-time PCR...
December 4, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/29202471/apoptosis-induced-cxcl5-accelerates-inflammation-and-growth-of-prostate-tumor-metastases-in-bone
#15
Hernan Roca, Jacqueline D Jones, Marta C Purica, Savannah Weidner, Amy J Koh, Robert Kuo, John E Wilkinson, Yugang Wang, Stephanie Daignault-Newton, Kenneth J Pienta, Todd M Morgan, Evan T Keller, Jacques E Nör, Lonnie D Shea, Laurie K McCauley
During tumor progression, immune system phagocytes continually clear apoptotic cancer cells in a process known as efferocytosis. However, the impact of efferocytosis in metastatic tumor growth is unknown. In this study, we observed that macrophage-driven efferocytosis of prostate cancer cells in vitro induced the expression of proinflammatory cytokines such as CXCL5 by activating Stat3 and NF-κB(p65) signaling. Administration of a dimerizer ligand (AP20187) triggered apoptosis in 2 in vivo syngeneic models of bone tumor growth in which apoptosis-inducible prostate cancer cells were either coimplanted with vertebral bodies, or inoculated in the tibiae of immunocompetent mice...
November 27, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29198331/biomarkers-in-prostate-cancer-current-clinical-utility-and-future-perspectives
#16
REVIEW
Alexander Kretschmer, Derya Tilki
Current tendencies in the treatment course of prostate cancer patients increase the need for reliable biomarkers that help in decision-making in a challenging clinical setting. Within the last decade, several novel biomarkers have been introduced. In the following comprehensive review article, we focus on diagnostic (PHI®, 4K score, SelectMDx®, ConfirmMDx®, PCA3, MiPS, ExoDX®, mpMRI) and prognostic (OncotypeDX GPS®, Prolaris®, ProMark®, DNA-ploidy, Decipher®) biomarkers that are in widespread clinical use and are supported by evidence...
December 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/29196208/eradicate-a-prospective-evaluation-combining-radium-223-dichloride-and-abiraterone-acetate-plus-prednisone-in-patients-with-castration-resistant-prostate-cancer
#17
Neal D Shore, Ronald F Tutrone, Neil F Mariados, Luke T Nordquist, Bryan A Mehlhaff, Karyn J Steere, Stacey S Harrelson
BACKGROUND: Multiple castration-resistant prostate cancer (CRPC) therapies are approved by the United States Food and Drug Administration. Radium-223 dichloride (Ra-223) with abiraterone acetate plus prednisone have different mechanisms of action and distinct off-target side-effect profiles. We prospectively investigated their combined safety, tolerability, and patient-reported outcome measures. PATIENTS AND METHODS: eRADicAte, an investigator-initiated, phase II trial, studied 31 patients with metastatic CRPC, from 5 United States uro-oncology research sites...
November 7, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/29194902/metastatic-prostate-cancer-incidence-in-australia-after-amendment-to-prostate-specific-antigen-screening-guidelines
#18
Sabin Smith, Philippe Wolanski
BACKGROUND: To compare the incidence of newly diagnosed metastatic prostate cancer at an Australian facility pre- and post-publication of the United States Preventive Services Task Force (USPSTF) guidelines and subsequent amendment of the Royal Australian College of General Practitioners Preventive Activities in General Practice guidelines. METHODS: A retrospective analysis was undertaken by patients with newly diagnosed prostate cancer following transrectal ultrasound-guided biopsy between 2009 and 2014...
November 30, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/29194691/mediterranean-diet-after-prostate-cancer-diagnosis-and-urinary-and-sexual-functioning-the-health-professionals-follow-up-study
#19
Scott R Bauer, Erin L Van Blarigan, Meir J Stampfer, June M Chan, Stacey A Kenfield
BACKGROUND: Men with prostate cancer often experience urinary and sexual dysfunction after treatment. Previous studies have demonstrated a relationship between dietary factors and these symptoms among men with diabetes or metabolic syndrome. However, there are limited data on whether diet after prostate cancer diagnosis, including a Mediterranean dietary pattern, affects urinary and sexual function among prostate cancer survivors. METHODS: Men diagnosed with non-metastatic prostate cancer in the Health Professionals Follow-up Study (n = 2960) from 1986 to 2012 were prospectively followed for a median of 8...
December 1, 2017: Prostate
https://www.readbyqxmd.com/read/29194371/in-vivo-imaging-of-prostate-cancer-tumors-and-metastasis-using-non-specific-fluorescent-nanoparticles-in-mice
#20
Coralie Genevois, Arnaud Hocquelet, Claire Mazzocco, Emilie Rustique, Franck Couillaud, Nicolas Grenier
With the growing interest in the use of nanoparticles (NPs) in nanomedicine, there is a crucial need for imaging and targeted therapies to determine NP distribution in the body after systemic administration, and to achieve strong accumulation in tumors with low background in other tissues. Accumulation of NPs in tumors results from different mechanisms, and appears extremely heterogeneous in mice models and rather limited in humans. Developing new tumor models in mice, with their low spontaneous NP accumulation, is thus necessary for screening imaging probes and for testing new targeting strategies...
December 1, 2017: International Journal of Molecular Sciences
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