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https://www.readbyqxmd.com/read/28531567/impact-of-body-composition-parameters-on-clinical-outcomes-in-patients-with-metastatic-castrate-resistant-prostate-cancer-treated-with-docetaxel
#1
Samantha J Cushen, Derek G Power, Kevin P Murphy, Ray McDermott, Brendan T Griffin, Marvin Lim, Louise Daly, Peter MacEneaney, Kathleen O' Sullivan, Carla M Prado, Aoife M Ryan
BACKGROUND: Body composition may influence clinical outcomes of certain chemotherapeutic agents. We examined the prognostic significance of skeletal muscle mass and adipose tissue on docetaxel toxicity and overall survival in patients with metastatic castrate resistant prostate cancer (mCRPC). METHODS: A retrospective review of patients medical records with mCRPC, treated with docetaxel was conducted. Body composition parameters (skeletal muscle mass, muscle attenuation [MA], visceral and subcutaneous adipose tissue) were measured at L3 by computed tomography (CT) and defined using previously established cut points...
June 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28529549/abiraterone-acetate-and-prednisone-in-chemotherapy-na%C3%A3-ve-prostate-cancer-patients-rationale-evidence-and-clinical-utility
#2
REVIEW
E David Crawford, Neal D Shore, Daniel P Petrylak, Celestia S Higano, Charles J Ryan
Abiraterone acetate 1000 mg/day, combined with prednisone 5 mg PO twice daily, is indicated for the treatment of metastatic castration-resistant prostate cancer (mCRPC). Abiraterone acetate is the oral prodrug of abiraterone, a specific CYP17 inhibitor that blocks androgen biosynthesis within the adrenal glands, testes and tumor microenvironment. In a phase III trial of men with asymptomatic or minimally symptomatic, chemotherapy-naïve mCRPC, treatment with oral abiraterone acetate plus prednisone led to a statistically significant improvement in the co-primary endpoints of overall survival and radiographic progression-free survival when compared with placebo plus prednisone...
May 2017: Therapeutic Advances in Medical Oncology
https://www.readbyqxmd.com/read/28529342/circulating-tumor-cells-and-serum-levels-of-mmp-2-mmp-9-and-vegf-as-markers-of-the-metastatic-process-in-patients-with-high-risk-of-metastatic-progression
#3
Marketa Skerenova, Veronika Mikulova, Otakar Capoun, Tomas Zima, Petra Tesarova
BACKGROUND AND AIMS: Metastases are a severe complication in cancer patients and biomarkers predicting their progression are still lacking for specific groups of patients. HER2 positive breast cancer (HER2 BC) patients on trastuzumab therapy are at risk of the development of unpredictable and often fatal central nervous system (CNS) metastases and castration resistant prostate cancer (CRPC) patients urgently need a marker of disease progression during therapy. Proposed metastatic markers: circulating tumor cells (CTC), serum levels of matrix metalloproteinase 2 (MMP-2), 9 (MMP-9) and vascular endothelial growth factor (VEGF) were prospectively studied to confirm their utility in these two narrowly defined groups of cancer patients...
May 16, 2017: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
https://www.readbyqxmd.com/read/28529139/psychopharmacology-of-combined-activation-of-the-serotonin1a-and-%C3%AF-1-receptors
#4
REVIEW
Yukio Ago, Shigeru Hasebe, Naoki Hiramatsu, Hitoshi Hashimoto, Kazuhiro Takuma, Toshio Matsuda
The selective serotonin (5-HT) reuptake inhibitors (SSRIs) are generally used for the treatment of major depressive disorders, and the 5-HT1A and σ1 receptors are considered to be targets for treatment of psychiatric disorders. Some SSRIs such as fluvoxamine have agonistic activity towards for the σ1 receptor, but it is not known whether the effect on the receptor plays a key role in the pharmacological effects. We have recently demonstrated that fluvoxamine shows an anti-anhedonic effect in picrotoxin-induced model of anxiety/depression, while the SSRI paroxetine, which have little affinity for the σ1 receptor, does not...
May 18, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28528814/preclinical-study-using-malat1-small-interfering-rna-or-androgen-receptor-splicing-variant-7-degradation-enhancer-asc-j9-%C3%A2-to-suppress-enzalutamide-resistant-prostate-cancer-progression
#5
Ronghao Wang, Yin Sun, Lei Li, Yuanjie Niu, Wanying Lin, Changyi Lin, Emmanuel S Antonarakis, Jun Luo, Shuyuan Yeh, Chawnshang Chang
BACKGROUND: While androgen-deprivation-therapy with the recently developed antiandrogen enzalutamide (Enz) shows promising therapeutic benefits in men with metastatic castration-resistant prostate cancer (PCa), many patients develop resistance to Enz, which may involve the induction of the androgen receptor (AR) splicing variant 7 (AR-v7). OBJECTIVE: Our aim is to identify the mechanisms responsible for AR-v7 production and to develop novel preclinical approaches to suppress the Enz-resistant (EnzR) PCa...
May 18, 2017: European Urology
https://www.readbyqxmd.com/read/28527407/mechanisms-of-resistance-to-systemic-therapy-in-metastatic-castration-resistant-prostate-cancer
#6
REVIEW
Giuseppe Galletti, Benjamin I Leach, Linda Lam, Scott T Tagawa
Patients with metastatic castration-resistant prostate cancer (mCPRC) now have an unprecedented number of approved treatment options, including chemotherapies (docetaxel, cabazitaxel), androgen receptor (AR)-targeted therapies (enzalutamide, abiraterone), a radioisotope (radium-223) and a cancer vaccine (sipuleucel-T). However, the optimal treatment sequencing pathway is unknown, and this problem is exacerbated by the issues of primary and acquired resistance. This review focuses on mechanisms of resistance to AR-targeted therapies and taxane-based chemotherapy...
May 8, 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28526418/prevalence-of-measurable-disease-in-metastatic-castration-resistant-prostate-cancer
#7
Guru Sonpavde, Ankit Madan, Mary K Baker, Jori E May, Gurudatta Naik, Sejong Bae
BACKGROUND: Because of the low historical prevalence of measurable disease in metastatic castration-resistant prostate cancer (mCRPC), phase II trials have used prostate-specific antigen (PSA) and bone scan changes as primary end points. Frequent whole-body imaging and improved computed tomography technology currently identify measurable disease more frequently, warranting consideration of objective response as a major end point. PATIENTS AND METHODS: Data from reported phase III trials of mCRPC were analyzed...
April 26, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28525684/223ra-dichloride-response-in-a-patient-with-paget-disease-and-bone-metastases-secondary-to-castration-resistant-prostate-cancer
#8
Lina García Cañamaque, Cristina Rioja Parada, Paloma García De la Peña
PURPOSE: Paget disease is commonly asymptomatic and discovered when an imaging test is performed for another clinical indication or when elevated serum alkaline phosphatase is found. Bone pain usually appears late in the disease process and is only present in a minority of patients. For diagnosis, X-ray and bone scan are the most recommended imaging methods; radionuclide imaging of the skeleton has become the standard, since it is the most sensitive test for detecting increased bone activity...
May 18, 2017: Tumori
https://www.readbyqxmd.com/read/28525341/morphological-analysis-of-testicles-in-cats-with-disorders-of-sex-development
#9
S Dzimira, W Nizanski, J A Madej
Disorders of sex development (DSD) are rare in cats. They can be caused by chromosomal aberrations, gene mutations or other undefined factors. The aim of the present study was to compare the histological structure and immunohistochemical reactivity of testes in cats with DSD and in healthy cats. The research material consisted of the gonads of four cats - phenotypic males with an incorrect structure of the reproductive system. The control group consisted of the testes of four healthy cats - routinely castrated phenotypical males...
March 28, 2017: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/28522737/why-targeting-psma-is-a-valuable-addition-in-the-management-of-castration-resistant-prostate-cancer-the-urologists-point-of-view
#10
Boris Hadaschik, Martin Boegemann
No abstract text is available yet for this article.
May 18, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28522124/-prostate-cancer-histoseminar-update-of-the-2016-who-classification%C3%A2-%C3%A2-case-n-o-6-castration-resistant-prostate-cancer-with-partial-neuroendocrin-differenciation
#11
https://www.readbyqxmd.com/read/28521303/emt-circulating-tumor-cells-detected-by-cell-surface-vimentin-are-associated-with-prostate-cancer-progression
#12
Arun Satelli, Izhar Batth, Zachary Brownlee, Abhishek Mitra, Shouhao Zhou, Hyangsoon Noh, Christina R Rojas, Heming Li, Qing H Meng, Shulin Li
Recent advances in the field of circulating tumor cells (CTC) have shown promise in this liquid biopsy-based prognosis of patient outcome. However, not all of the circulating cells are tumor cells, as evidenced by a lack of tumor-specific markers. The current FDA standard for capturing CTCs (CellSearch) relies on an epithelial marker and cells captured via CellSearch cannot be considered to have undergone EMT. Therefore, it is difficult to ascertain the presence and relevance of any mesenchymal or EMT-like CTCs...
May 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28518406/host-density-increases-parasite-recruitment-but-decreases-host-risk-in-a-snail-trematode-system
#13
J C Buck, R F Hechinger, A C Wood, T E Stewart, A M Kuris, K D Lafferty
Most species aggregate in local patches. High host density in patches increases contact rate between hosts and parasites, increasing parasite transmission success. At the same time, for environmentally-transmitted parasites, high host density can decrease infection risk to individual hosts, because infective stages are divided among all hosts in a patch, leading to safety in numbers. We tested these predictions using the California horn snail, Cerithideopsis californica (=Cerithidea californica), which is the first intermediate host for at least 19 digenean trematode species in California estuaries...
May 18, 2017: Ecology
https://www.readbyqxmd.com/read/28515055/exome-sequencing-of-african-american-prostate-cancer-reveals-loss-of-function-erf-mutations
#14
Franklin W Huang, Juan Miguel Mosquera, Andrea Garofalo, Coyin Oh, Maria Baco, Ali Amin-Mansour, Bokang Rabasha, Samira Bahl, Stephanie A Mullane, Brian D Robinson, Saud Aldubayan, Francesca Khani, Beerinder Karir, Eejung Kim, Jeremy Chimene-Weiss, Matan Hofree, Alessandro Romanel, Joseph R Osborne, Jong Wook Kim, Gissou Azabdaftari, Anna Woloszynska-Read, Karen Sfanos, Angelo M De Marzo, Francesca Demichelis, Stacey Gabriel, Eliezer M Van Allen, Jill Mesirov, Pablo Tamayo, Mark A Rubin, Isaac J Powell, Levi A Garraway
African-American men have the highest incidence and mortality from prostate cancer. Whether a biological basis exists for this disparity remains unclear. Exome sequencing (n=102) and targeted validation (n = 90) of localized primary hormone-naïve prostate cancer in African-American men identified several gene mutations not previously observed in this context, including recurrent loss-of-function mutations in ERF, an ETS transcriptional repressor, in 5% of cases. Analysis of existing prostate cancer cohorts revealed ERF deletions in 3% of primary prostate cancers and mutations or deletions in ERF in 3-5% of lethal castration-resistant prostate cancers...
May 17, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28514973/olfactory-evaluation-of-boar-taint-effect-of-factors-measured-at-slaughter-and-link-with-boar-taint-compounds
#15
E Heyrman, S Millet, F A M Tuyttens, B Ampe, S Janssens, N Buys, J Wauters, L Vanhaecke, M Aluwé
There is a commitment by the European pig sector to ban surgical castration of male piglets in the European Union in 2018. One alternative to castration is to raise entire male pigs, with an increased risk of boar taint. A field study was performed to: (1) evaluate inter- and intra-farm variation in boar taint prevalence, (2) investigate factors measured at slaughter influencing boar taint and (3) evaluate the relationship between sensorial scoring by a trained panel and the concentration of boar taint components...
May 18, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28508918/-local-anaesthesia-in-ruminants
#16
Karl Nuss, Andrea Schwarz, Simone Ringer
The use of local anaesthesia in ruminants allows many surgical procedures to be conducted free of pain, efficiently and inexpensively in the field. Local anaesthesia combined with sedation and immobilisation of the animal can replace general anaesthesia for many procedures (e. g. castration, claw amputation). The level of difficulty differs among various local anaesthetic techniques: local infiltration of tissue or anaesthesia of the cornual nerve are easily performed, whereas local anaesthesia of the eye, regional anaesthesia in limbs or anaesthesia for umbilical surgery are more difficult to carry out...
May 16, 2017: Tierärztliche Praxis. Ausgabe G, Grosstiere/Nutztiere
https://www.readbyqxmd.com/read/28505901/re-activation-of-notch1-synergizes-with-multiple-pathways-in-promoting%C3%A2-castration-resistant-prostate-cancer
#17
Anthony Atala
No abstract text is available yet for this article.
June 2017: Journal of Urology
https://www.readbyqxmd.com/read/28502694/phase-ii-trial-of-the-pi3-kinase-inhibitor-buparlisib-bkm-120-with-or-without-enzalutamide-in-men-with-metastatic-castration-resistant-prostate-cancer
#18
Andrew J Armstrong, Susan Halabi, Patrick Healy, Joshi J Alumkal, Carolyn Winters, Julie Kephart, Rhonda L Bitting, Carey Hobbs, Colleen F Soleau, Tomasz M Beer, Rachel Slottke, Kelly Mundy, Evan Y Yu, Daniel J George
BACKGROUND: Phosphatidylinositol-3-kinase (PI3K) and androgen receptor pathway activation is common in metastatic castration resistant prostate cancer (mCRPC). Buparlisib is an oral, pan-class I PI3 kinase inhibitor. METHODS: This was a multisite single arm phase II trial of buparlisib 100 mg ± enzalutamide daily in men with mCRPC whose disease progressed on or who were not candidates for docetaxel. The primary end-point was the rate of radiographic/clinical progression-free survival (PFS) at 6 months...
May 11, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28501574/androgen-production-in-pediatric-adrenocortical-tumors-may-occur-via-both-the-classic-and-or-the-alternative-backdoor-pathway
#19
Nesa Marti, Jana Malikova, José A Galván, Maude Aebischer, Marco Janner, Zdenek Sumnik, Barbora Obermannova, Genevieve Escher, Aurel Perren, Christa E Flück
Children with adrenocortical tumors (ACTs) often present with virilization due to high tumoral androgen production, with dihydrotestosterone (DHT) as most potent androgen. Recent work revealed two pathways for DHT biosynthesis, the classic and the backdoor pathway. Usage of alternate routes for DHT production has been reported in castration-resistant prostate cancer, CAH and PCOS. To assess whether the backdoor pathway may contribute to the virilization of pediatric ACTs, we investigated seven children suffering from androgen producing tumors using steroid profiling and immunohistochemical expression studies...
May 10, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28498618/phase-i-clinical-trial-of-cell-division-associated-1-cdca1-peptide-vaccination-for-castration-resistant-prostate-cancer
#20
Wataru Obara, Fuminori Sato, Kazuyoshi Takeda, Renpei Kato, Yoichiro Kato, Mitsugu Kanehira, Ryo Takata, Hiromitsu Mimata, Tamotsu Sugai, Yusuke Nakamura, Tomoaki Fujioka
We screened cell division associated 1 (CDCA1) as an oncogene that is overexpressed on several cancers, including prostate cancer. We also identified a highly immunogenic HLA-A*2402-restricted epitope peptide corresponding to part of the CDCA1 protein. We conducted a phase I clinical trial for patients with castration resistant prostate cancer (CRPC) using a CDCA1 peptide vaccination. Twelve patients having HLA-A*2402 with CRPC after failure of docetaxel chemotherapy were enrolled. They received subcutaneous administration of the CDCA1 peptide as an emulsion with Montanide ISA51VG once a week in a dose-escalation manner (doses of 1...
May 12, 2017: Cancer Science
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