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Prostatic specific antigen

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https://www.readbyqxmd.com/read/28719451/pancreatic-ductal-adenocarcinoma-with-high-radiotracer-uptake-in-68ga-prostate-specific-membrane-antigen-pet-ct
#1
Samine Sahbai, Petra Rieping, Christina Pfannenberg, Christian la Fougère, Matthias Reimold
Prostate-specific membrane antigen imaging with PET/CT is increasingly used in prostate cancer and was shown to have a high diagnostic performance. We report a clinical case of a 67-year-old man with previous history of operated prostate cancer and increasing prostate-specific antigen blood level. Ga-HBED-CC prostate-specific membrane antigen PET/CT imaging was indicated for the assessment of local recurrence and lymph node metastases of prostate cancer. In addition, a soft tissue mass in the body of the pancreas with high radiotracer uptake was detected...
July 17, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28719448/biopsy-proven-diffuse-mediastinal-prostate-cancer-metastases-negative-on-18f-fluorocholine-diagnosed-on-68ga-psma-and-18f-psma-pet-ct
#2
Guillaume Chaussé, Tamim Niazi, Gad Solomon Abikhzer, Stephan Michael Probst
A 72-year-old man with prostate cancer (stage T3b, Gleason score 7) treated by radical prostatectomy was found to have biochemical failure (prostate-specific antigen 8.5 ng/mL) and a suspicious growing nodularity at the left prostate bed on MRI. F-fluorocholine PET/CT failed to demonstrate any site of uptake suggestive of malignancy. A bone scan did exclude bone metastases. Ga-PSMA PET/CT revealed various positive lymph nodes in the supraclavicular, mediastinal, and hilar regions. This was confirmed on F-DCFPyl PET/CT, with the addition of a suspicious right axillary lymph node...
July 17, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28718667/hydroxytyrosol-induces-apoptosis-and-cell-cycle-arrest-and-suppresses-multiple-oncogenic-signaling-pathways-in-prostate-cancer-cells
#3
Haseeb Zubair, Arun Bhardwaj, Aamir Ahmad, Sanjeev Kumar Srivastava, Mohammad Aslam Khan, Girijesh Kumar Patel, Seema Singh, Ajay Partap Singh
SCOPE: Hydroxytyrosol (HT), a polyphenol from olives, is a potential anticancer agent. This study was designed to evaluate the anticancer activity of HT against prostate cancer cells, and the mechanism thereof. METHODS AND RESULTS: Treatment of LNCaP and C4-2 prostate cancer cells with HT resulted in a dose-dependent inhibition of proliferation. This was in contrast to HT's ineffectiveness against normal prostate epithelial cells RWPE1 and PWLE2, suggesting cancer-cell-specific effect...
July 18, 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/28718092/no-significant-impact-of-prior-treatment-profile-with-docetaxel-on-the-efficacy-of-cabazitaxel-in-japanese-patients-with-metastatic-castration-resistant-prostate-cancer
#4
Hideaki Miyake, Takayuki Sugiyama, Ryota Aki, Yuto Matsushita, Keita Tamura, Daisuke Motoyama, Toshiki Ito, Atsushi Otsuka
The objective of this study was to retrospectively analyze the oncological outcomes of Japanese patients with metastatic castration-resistant prostate cancer (mCRPC) who received cabazitaxel. This study included a total of 63 consecutive Japanese mCRPC patients treated with cabazitaxel following the failure of docetaxel, and assessed the prognostic significance of cabazitaxel therapy in these patients focusing on the association of efficacies between two taxane agents. After treatment with cabazitaxel (median 5 cycles), prostate-specific antigen (PSA) decline was observed in 39 patients (61...
August 2017: Medical Oncology
https://www.readbyqxmd.com/read/28718070/platelet-lymphocyte-and-neutrophil-lymphocyte-ratios-are-prognostic-but-not-predictive-of-response-to-abiraterone-acetate-in-metastatic-castration-resistant-prostate-cancer
#5
A J Lozano Martínez, R Moreno Cano, S Escobar Páramo, R Salguero Aguilar, E Gonzalez Billalabeitia, R García Fernández, I De La Fuente Muñoz, A Romero Borque, M Porras Martínez, F Lopez Soler, E Cardenas Cánovas, I Ortega Martín
PURPOSE: Recently neutrophil-lymphocyte ratio (NLR) and platelet-lymphocyte ratio (PLR) have been reported to be inflammatory parameters that confer poorer outcome in metastatic castration-resistant prostate cancer (mCPRPC). However, these ratios have not been analyzed in patients treated with abiraterone acetate. We explored the relationship between different values of PLR and NLR and survival in mCPRCP treated with abiraterone and their possible relation with a prostate specific antigen (PSA) response...
July 17, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28717736/cardiovascular-disease-risk-factors-how-relevant-in-african-men-with-prostate-cancer-receiving-androgen-deprivation-therapy
#6
Okon Ekwere Essien, Iya Eze Bassey, Rebecca Mtaku Gali, Alphonsus Ekpe Udoh, Uwem Okon Akpan, Enakirerhi E Glen
PURPOSE: Cardiovascular disease risk factors have been associated with androgen-deprivation therapy (ADT) in white and Hispanic populations. It is therefore relevant to determine if there exists a relationship between these parameters in the African population. PATIENTS AND METHODS: The design of the study was cross sectional. Prostate-specific antigen concentration, waist circumference, body mass index (BMI), lipid profile, glucose level, and insulin level were determined in 153 patients with prostate cancer and 80 controls...
February 2017: Journal of Global Oncology
https://www.readbyqxmd.com/read/28717700/prostate-cancer-burden-at-the-uganda-cancer-institute
#7
Fred Okuku, Jackson Orem, George Holoya, Chris De Boer, Cheryl L Thompson, Matthew M Cooney
PURPOSE: In Uganda, the incidence of prostate cancer is increasing at a rate of 5.2% annually. Data describing presentation and outcomes for patients with prostate cancer are lacking. METHODS: A retrospective review of medical records for men with histologically confirmed prostate cancer at the Uganda Cancer Institute (UCI) from January 1 to December 17, 2012, was performed. RESULTS: Our sample included 182 men whose mean age was 69.5 years (standard deviation, 9...
August 2016: Journal of Global Oncology
https://www.readbyqxmd.com/read/28716650/the-use-of-prostate-specific-antigen-screening-in-purchased-versus-direct-care-settings-data-from-the-tricare-military-database
#8
Alexander P Cole, Wei Jiang, Stuart R Lipsitz, Peter A Learn, Maxine Sun, Toni K Choueiri, Paul L Nguyen, Adam S Kibel, Mani Menon, Jesse D Sammon, Tracey Koehlmoos, Adil Haider, Quoc-Dien Trinh
PURPOSE: Fee for service (FFS) reimbursement incentives may affect care. We sought to compare odds of PSA screening among former and active duty United States (US) military service members based on receipt of primary care from integrated military health facilities versus community providers reimbursed via FFS. MATERIALS AND METHODS: We performed a retrospective study of all active duty and retired male service members (40-64) covered by the TRICARE military health benefit in 2010...
July 14, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28716370/a-systematic-review-and-framework-for-the-use-of-hormone-therapy-with-salvage-radiation-therapy-for-recurrent-prostate-cancer
#9
REVIEW
Daniel E Spratt, Robert T Dess, Zachary S Zumsteg, Daniel W Lin, Phuoc T Tran, Todd M Morgan, Emmanuel S Antonarakis, Paul L Nguyen, Charles J Ryan, Howard M Sandler, Matthew R Cooperberg, Edwin Posadas, Felix Y Feng
CONTEXT: Salvage radiotherapy (SRT) is a standard of care for men who recur postprostatectomy, and recent randomized trials have assessed the benefit and toxicity of adding hormone therapy (HT) to SRT with differing results. OBJECTIVE: To perform a systematic review of randomized phase III trials of the use of SRT ± HT and generate a framework for the use of HT with SRT. EVIDENCE ACQUISITION: Systematic literature searches were conducted on February 15, 2017 in three databases (MEDLINE [via PubMed], EMBASE, and ClinicalTrials...
July 14, 2017: European Urology
https://www.readbyqxmd.com/read/28716214/early-68-ga-psma-pet-mri-acquisition-assessment-of-lesion-detectability-and-pet-metrics-in-patients-with-prostate-cancer-undergoing-same-day-late-pet-ct
#10
L Domachevsky, H Bernstine, N Goldberg, M Nidam, D Stern, J Sosna, D Groshar
AIM: To compare lesion detectability and positron-emission tomography (PET) metric measurements between early-PET/magnetic resonance imaging (MRI) acquisition and same-day PET/computed tomography (CT). MATERIALS AND METHODS: The study was approved by the institutional review board and written informed consent was obtained from all patients. Twenty-one patients underwent non-time-of-flight (TOF) PET/MRI immediately following (68)GA-prostate-specific membrane antigen (PSMA) tracer injection in two steps: firstly, early prostate PET/MRI (pPET/MRI) and early whole-body (WB) PET/MRI (wbPET/MR) followed by WB TOF PET/CT (wbPET/CT)...
July 14, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28716080/pretreatment-antigen-specific-immunity-and-regulation-association-with-subsequent-immune-response-to-anti-tumor-dna-vaccination
#11
Laura E Johnson, Brian M Olson, Douglas G McNeel
BACKGROUND: Immunotherapies have demonstrated clinical benefit for many types of cancers, however many patients do not respond, and treatment-related adverse effects can be severe. Hence many efforts are underway to identify treatment predictive biomarkers. We have reported the results of two phase I trials using a DNA vaccine encoding prostatic acid phosphatase (PAP) in patients with biochemically recurrent prostate cancer. In both trials, persistent PAP-specific Th1 immunity developed in some patients, and this was associated with favorable changes in serum PSA kinetics...
July 18, 2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28716060/nonlinear-joint-models-for-individual-dynamic-prediction-of-risk-of-death-using-hamiltonian-monte-carlo-application-to-metastatic-prostate-cancer
#12
Solène Desmée, France Mentré, Christine Veyrat-Follet, Bernard Sébastien, Jérémie Guedj
BACKGROUND: Joint models of longitudinal and time-to-event data are increasingly used to perform individual dynamic prediction of a risk of event. However the difficulty to perform inference in nonlinear models and to calculate the distribution of individual parameters has long limited this approach to linear mixed-effect models for the longitudinal part. Here we use a Bayesian algorithm and a nonlinear joint model to calculate individual dynamic predictions. We apply this approach to predict the risk of death in metastatic castration-resistant prostate cancer (mCRPC) patients with frequent Prostate-Specific Antigen (PSA) measurements...
July 17, 2017: BMC Medical Research Methodology
https://www.readbyqxmd.com/read/28715578/adverse-pathologic-findings-for-men-electing-immediate-radical-prostatectomy-defining-a-favorable-intermediate-risk-group
#13
Hiten D Patel, Jeffrey J Tosoian, H Ballentine Carter, Jonathan I Epstein
Importance: Active surveillance is recommended for patients with very low-risk (VLR) and low-risk (LR) prostate cancer. Despite controversy, recent clinical guidelines state surveillance may be considered for men with low-volume intermediate-risk (LVIR) disease. Objective: To compare rates of adverse pathologic findings among VLR, LR, and LVIR men electing immediate radical prostatectomy and evaluate criteria to define if a favorable intermediate-risk group minimizing risk exists...
July 13, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/28715352/commensal-bacterial-modulation-of-the-host-immune-response-to-ameliorate-pain-in-a-murine-model-of-chronic-prostatitis
#14
Stephen F Murphy, Anthony J Schaeffer, Joseph D Done, Marsha L Quick, Utkucan Acar, Praveen Thumbikat
The human commensal microflora plays an essential role in modulating the immune response to control homeostasis. Staphylococcus epidermidis, a commensal bacterium most commonly associated with the skin exerts such effects locally, modulating local immune responses during inflammation and preventing superinfection by pathogens such as Staphylococcus aureus. Although the prostate is considered by many to be sterile, multiple investigations have shown that small numbers of gram-positive bacterial species such as S...
August 2017: Pain
https://www.readbyqxmd.com/read/28714919/overcoming-oncogenic-mediated-tumor-immunity-in-prostate-cancer
#15
REVIEW
Geoffrey Bryant, Lin Wang, David J Mulholland
Immunotherapy is being tested intensively in clinical trials for prostate cancer; it includes immune checkpoint inhibition, prostate specific antigen (PSA) vaccines and dendritic cell-based strategies. Despite increasing evidence for clinical responses, the consensus of multiple trials is that prostate cancers are poorly responsive to immunotherapy. Prostate cancer has a high degree of pathological and genetic heterogeneity compared to other cancer types, which may account for immunotherapeutic resistance. This hypothesis also implies that select types of prostate tumors may be differentially responsive to immune-based strategies and that the clinical stage, pathological grade and underlying genetic landscape may be important criteria in identifying tumors that respond to immune therapies...
July 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28711645/prostate-specific-antigen-concentration-in-vaginal-fluid-after-exposure-to-semen
#16
Andrzej Kulczycki, Ilene Brill, Margaret Christine Snead, Maurizio Macaluso
OBJECTIVE: Prostate-specific antigen (PSA) is the best established biomarker of semen exposure. PSA in vaginal fluid returns to pre-exposure concentrations within 24-48 h, but the speed of decay during the first ten hours is unknown. We sought to determine how fast PSA concentrations decline during the first ten hours after exposure to semen. STUDY DESIGN: Women in the 50 enrolled couples were intravaginally inoculated with 10, 20, 100, and 200μl of their partner's semen and then collected vaginal swabs immediately after, 30min, 4 and 10h after exposure...
July 12, 2017: Contraception
https://www.readbyqxmd.com/read/28711617/highly-sensitive-label-free-immunosensing-of-prostate-specific-antigen-using-poly-cysteine-caped-by-graphene-quantum-and-gold-nanoparticle-a-novel-signal-amplification-strategy
#17
Hediyeh Malekzad, Mohammad Hasanzadeh, Nasrin Shadjou, Abolghasem Jouyban
A mediator-free electrochemical immunosensor for quantitation of prostate specific antigen (PSA) based on dual signal amplification strategy was fabricated. In this work, PSA-antibody (anti-PSA) was immobilized onto a green and biocompatible nanocomposite containing poly L-cysteine (P-Cys) as conductive matrix and graphene quantum dots (GQDs)/gold nanoparticles (GNPs) as dual signal amplification elements. Therefore, a novel multilayer film based on P-Cys, GQDs, and GNPs was exploited to develop a highly sensitive amperometric immunosensor for detection of PSA...
July 12, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28711565/new-aspects-of-molecular-imaging-in-prostate-cancer
#18
Francesco Ceci, Paolo Castellucci, Juliano J Cerci, Stefano Fanti
Nowadays several new imaging modalities are available for investigating prostate cancer (PCa) such as magnet resonance imaging (MRI) in the form of whole body MRI and pelvic multiparametric MRI and positron emission tomography (PET) using choline as radiotracers. Nevertheless, these modalities proved sub-optimal accuracy for detecting PCa metastases, particularly in the recurrence setting. A new molecular probe targeting the prostate specific membrane antigen (PSMA) has been recently developed for PET imaging...
July 12, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28710901/baseline-and-longitudinal-plasma-caveolin-1-level-as-a-biomarker-in-active-surveillance-for-early-stage-prostate-cancer
#19
Spyridon P Basourakos, John W Davis, Brian F Chapin, John F Ward, Curtis A Pettaway, Louis L Pisters, Neema Navai, Mary F Achim, Xuemei Wang, Hsiang-Chun Chen, Seungtaek Choi, Deborah Kuban, Patricia Troncoso, Sam Hanash, Timothy C Thompson, Jeri Kim
OBJECTIVES: To evaluate the role of caveolin-1 as a predictor of disease reclassification in men with early prostate cancer undergoing active surveillance. PATIENTS AND METHODS: We analyzed archived plasma samples prospectively collected from men with early prostate cancer in a single-institution active surveillance study. Of 825 patients enrolled, 542 had 1 or more years of follow-up. Baseline and longitudinal plasma caveolin-1 levels were measured using an enzyme-linked immunosorbent assay...
July 15, 2017: BJU International
https://www.readbyqxmd.com/read/28709804/identification-of-natural-regulatory-t-cell-epitopes-reveals-convergence-on-a-dominant-autoantigen
#20
John D Leonard, Dana C Gilmore, Thamotharampillai Dileepan, Wioletta I Nawrocka, Jaime L Chao, Mary H Schoenbach, Marc K Jenkins, Erin J Adams, Peter A Savage
Regulatory T (Treg) cells expressing the transcription factor Foxp3 are critical for the prevention of autoimmunity and the suppression of anti-tumor immunity. The major self-antigens recognized by Treg cells remain undefined, representing a substantial barrier to the understanding of immune regulation. Here, we have identified natural Treg cell ligands in mice. We found that two recurrent Treg cell clones, one prevalent in prostate tumors and the other associated with prostatic autoimmune lesions, recognized distinct non-overlapping MHC-class-II-restricted peptides derived from the same prostate-specific protein...
July 18, 2017: Immunity
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