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https://www.readbyqxmd.com/read/28227780/impact-of-prostate-biopsy-tumor-amount-on-imaging-based-prognostics-employing-transductive-semi-supervised-regression
#1
Faisal M Khan, Casimir A Kulikowski, Faisal M Khan, Casimir A Kulikowski, Casimir A Kulikowski, Faisal M Khan
For newly diagnosed prostate cancer patients with a positive biopsy, there are a variety of treatment options to consider. To aid physicians and patients in their decision making, a variety of predictive assays have emerged within the last decade, many of them imaging based. These assays build predictive models for survival analysis to provide personalized risk assessments for the patients. However, there have rarely been any published studies on how the amount of tumor in the positive prostate biopsy affects the predictive power of these imaging based assays...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227764/enhanced-dual-stage-correlated-diffusion-imaging
#2
Farzad Khalvati, Junjie Zhang, Masoom A Haider, Alexander Wong, Farzad Khalvati, Junjie Zhang, Masoom A Haider, Alexander Wong, Farzad Khalvati, Alexander Wong, Junjie Zhang, Masoom A Haider
Prostate cancer is the most common form of cancer and third leading cause of cancer death in Canadian men. Multi-parametric magnetic resonance imaging (mpMRI) has become a powerful non-invasive diagnostic tool for the detection of prostate cancer. Among mpMRI imaging modalities, diffusion-weighed imaging has shown the most promising results in accurate detection of prostate cancer. Introduced recently, correlated diffusion imaging (CDI) is a new form of diffusion imaging which accounts for the joint correlation of diffusion signal attenuation across multiple gradient pulse strengths and timings to improve the separability of cancerous and healthy tissues...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227670/diffuse-reflectance-spectroscopy-can-differentiate-high-grade-and-low-grade-prostatic-carcinoma
#3
Priya N Werahera, Edward A Jasion, E David Crawford, M Scott Lucia, Adrie van Bokhoven, Holly T Sullivan, Fernando J Kim, Paul D Maroni, J David Port, John W Daily, Francisco G La Rosa, Priya N Werahera, Edward A Jasion, E David Crawford, M Scott Lucia, Adrie van Bokhoven, Holly T Sullivan, Fernando J Kim, Paul D Maroni, J David Port, John W Daily, Francisco G La Rosa, John W Daily, Adrie Van Bokhoven, E David Crawford, J David Port, Priya N Werahera, M Scott Lucia, Holly T Sullivan, Paul D Maroni, Edward A Jasion, Francisco G La Rosa, Fernando J Kim
Prostate tumors are graded by the revised Gleason Score (GS) which is the sum of the two predominant Gleason grades present ranging from 6-10. GS 6 cancer exclusively with Gleason grade 3 is designated as low grade (LG) and correlates with better clinical prognosis for patients. GS >7 cancer with at least one of the Gleason grades 4 and 5 is designated as HG indicate worse prognosis for patients. Current transrectal ultrasound guided prostate biopsies often fail to correctly diagnose HG prostate cancer due to sampling errors...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226772/computational-analysis-of-androgen-receptor-dependent-radiosensitivity-in-prostate-cancer
#4
Mengdi Qian, Alexandru Almasan, Evren Gurkan-Cavusoglu, Mengdi Qian, Alexandru Almasan, Evren Gurkan-Cavusoglu, Mengdi Qian, Evren Gurkan-Cavusoglu, Alexandru Almasan
In this study, we quantitatively analyze the mechanism by which androgen deprivation therapy (ADT) is enhancing radiosensitivity in prostate cancer (PCa) patients. It has been shown in laboratory experiments, as well as in patient data in the literature, that the androgen receptor (AR) reduces the effectiveness of ionizing radiation treatment by enhancing the non-homologous end joining (NHEJ) repair of radiation damage. The suppression of AR by ADT suppresses the activity of NHEJ that leads to radiosensitivity in PCa patients...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226707/slice-correspondence-estimation-using-surf-descriptors-and-context-based-search-for-prostate-whole-mount-histology-mri-registration
#5
Lina Guzman, Frederic Commandeur, Oscar Acosta, Antoine Simon, Alain Fautrel, Nathalie Rioux-Leclercq, Eduardo Romero, Romain Mathieu, Renaud de Crevoisier, Lina Guzman, Frederic Commandeur, Oscar Acosta, Antoine Simon, Alain Fautrel, Nathalie Rioux-Leclercq, Eduardo Romero, Romain Mathieu, Renaud de Crevoisier, Frederic Commandeur, Romain Mathieu, Antoine Simon, Alain Fautrel, Eduardo Romero, Renaud De Crevoisier, Oscar Acosta, Nathalie Rioux-Leclercq, Lina Guzman
Registration of histopathology volumes to Magnetic Resonance Images(MRI) is a crucial step for finding correlations in Prostate Cancer (PCa) and assessing tumor agressivity. This paper proposes a two-stage framework aimed at registering both modalities. Firstly, Speeded-Up Robust Features (SURF) algorithm and a context-based search is used to automatically determine slice correspondences between MRI and histology volumes. This step initializes a multimodal nonrigid registration strategy, which allows to propagate histology slices to MRI...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226578/automatic-prostate-segmentation-on-mr-images-with-deep-network-and-graph-model
#6
Ke Yan, Changyang Li, Xiuying Wang, Ang Li, Yuchen Yuan, Dagan Feng, Mohamed Khadra, Jinman Kim, Ke Yan, Changyang Li, Xiuying Wang, Ang Li, Yuchen Yuan, Dagan Feng, Mohamed Khadra, Jinman Kim, Ke Yan, Ang Li, Yuchen Yuan, Xiuying Wang, Jinman Kim, Dagan Feng, Changyang Li, Mohamed Khadra
Automated prostate diagnoses and treatments have gained much attention due to the high mortality rate of prostate cancer. In particular, unsupervised (automatic) prostate segmentation is an active and challenging research. Most conventional works usually utilize handcrafted (low-level) features for prostate segmentation; however they often fail to extract the intrinsic structure of the prostate, especially on images with blurred boundaries. In this paper, we propose a novel automated prostate segmentation model with learned features from deep network...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226496/nano-fabricated-memristive-biosensors-for-biomedical-applications-with-liquid-and-dried-samples
#7
I Tzouvadaki, X Lu, G De Micheli, S Ingebrandt, S Carrara, I Tzouvadaki, X Lu, G De Micheli, S Ingebrandt, S Carrara, I Tzouvadaki, X Lu, S Ingebrandt, G De Micheli, S Carrara
Nanowire based platforms are widely reported for sensing applications and for their potential in the bio-detection field. In the present work, memristive nanowire devices are implemented for label-free sensing in liquid samples as well as in dried samples via leveraging the modification of the hysteresis in the devices electrical response as a consequence of the surface modification. First, pH sensing in liquid conditions is demonstrated. In addition, the memristive devices are bio-functionalized using antibodies for Prostate Specific Antigen (PSA) as case of study...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225655/mnte-2-pyp-treatment-or-nox4-inhibition-protects-against-radiation-induced-damage-in-mouse-primary-prostate-fibroblasts-by-inhibiting-the-tgf-beta-1-signaling-pathway
#8
Arpita Chatterjee, Elizabeth A Kosmacek, Rebecca E Oberley-Deegan
Prostate cancer patients who undergo radiotherapy frequently suffer from side effects caused by radiation-induced damage to normal tissues adjacent to the tumor. Exposure of these normal cells during radiation treatment can result in tissue fibrosis and cellular senescence, which ultimately leads to postirradiation-related chronic complications including urinary urgency and frequency, erectile dysfunction, urethral stricture and incontinence. Radiation-induced reactive oxygen species (ROS) have been reported as the most potent causative factor for radiation damage to normal tissue...
February 22, 2017: Radiation Research
https://www.readbyqxmd.com/read/28225639/cost-effectiveness-comparison-of-imaging-guided-prostate-biopsy-techniques-systematic-transrectal-ultrasound-direct-in-bore-mri-and-image-fusion
#9
Wulphert Venderink, Tim M Govers, Maarten de Rooij, Jurgen J Fütterer, J P Michiel Sedelaar
OBJECTIVE: Three commonly used prostate biopsy approaches are systematic transrectal ultrasound guided, direct in-bore MRI guided, and image fusion guided. The aim of this study was to calculate which strategy is most cost-effective. MATERIALS AND METHODS: A decision tree and Markov model were developed to compare cost-effectiveness. Literature review and expert opinion were used as input. A strategy was deemed cost-effective if the costs of gaining one quality-adjusted life year (incremental cost-effectiveness ratio) did not exceed the willingness-to-pay threshold of €80,000 (≈$85,000 in January 2017)...
February 22, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28225445/adjuvant-radiotherapy-versus-wait-and-see-strategy-for-pathologic-t3-or-margin-positive-prostate-cancer-a-meta-analysis
#10
M Parvez Shaikh, Fiori Alite, Meng-Jia Wu, Abhishek A Solanki, Matthew M Harkenrider
OBJECTIVE: To conduct a meta-analysis of the randomized controlled trials (RCTs) comparing adjuvant radiotherapy (ART) to wait-and-see (WS) strategy in pathologic T3 or margin-positive prostate cancer. METHODS: A comprehensive EMBASE, MEDLINE, http://www.clinicaltrails.gov, and Cochrane Library search for RCTs of ART versus WS was done. Results were synthesized for metastasis-free, biochemical progression-free, clinical progression-free, hormone-free, and overall survival as well as gastrointestinal (GI) and genitourinary (GU) toxicities...
February 20, 2017: American Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28225017/corrigendum-nonautophagic-cytoplasmic-vacuolation-death-induction-in-human-pc-3m-prostate-cancer-by-curcumin-through-reactive-oxygen-species-mediated-endoplasmic-reticulum-stress
#11
Wei-Jiunn Lee, Ming-Hsien Chien, Jyh-Ming Chow, Junn-Liang Chang, Yu-Ching Wen, Yung-Wei Lin, Chao-Wen Cheng, Gi-Ming Lai, Michael Hsiao, Liang-Ming Lee
No abstract text is available yet for this article.
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28225015/identification-of-protein-biomarkers-and-signaling-pathways-associated-with-prostate-cancer-radioresistance-using-label-free-lc-ms-ms-proteomic-approach
#12
Lei Chang, Jie Ni, Julia Beretov, Valerie C Wasinger, Jingli Hao, Joseph Bucci, David Malouf, David Gillatt, Peter H Graham, Yong Li
Identifying biomarkers and signaling pathways are important for the management of prostate cancer (CaP) radioresistance. In this study, we identified differential proteins and signaling pathways from parental CaP cell lines and CaP radioresistant (RR) sublines using a label-free LC-MS/MS proteomics approach. A total of 309 signaling pathway proteins were identified to be significantly altered between CaP and CaP-RR cells (p ≤ 0.05, fold differences >1.5, ≥80% power). Among these proteins, nineteen are common among three paired CaP cell lines and associated with metastasis, progression and radioresistance...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28224650/androgen-receptor-splice-variants-are-not-substrates-of-nonsense-mediated-decay
#13
Atinuke S Ajiboye, David Esopi, Srinivasan Yegnasubramanian, Samuel R Denmeade
BACKGROUND: Androgen receptor (AR) splice variants have been clinically associated with progressive cancer, castration-resistance, and resistance to AR antagonists and androgen synthesis inhibitors. AR variants can be generated by genomic alterations and alternative splicing, and their expression is androgen-regulated. There has been a suggestion that AR variants bearing premature termination codons and coding for truncated proteins should be regulated by the nonsense-mediated decay (NMD) mRNA surveillance pathway, suggesting that either the NMD pathway is dysfunctional in variant-expressing cell lines or that variants are somehow able to evade degradation by NMD...
February 22, 2017: Prostate
https://www.readbyqxmd.com/read/28224276/preparedness-and-cancer-related-symptom-management-among-cancer-survivors-in-the-first-year-post-treatment
#14
Corinne R Leach, Alyssa N Troeschel, Dawn Wiatrek, Annette L Stanton, Michael Diefenbach, Kevin D Stein, Katherine Sharpe, Kenneth Portier
BACKGROUND: Many cancer survivors feel unprepared for the physical and psychosocial challenges that accompany the post-treatment care transition (i.e., re-entry phase), including management of cancer-related symptoms. Few studies have investigated personal and contextual factors associated with the extent of preparedness for re-entry or how they are related to cancer-related symptom management. PURPOSE: Data from the American Cancer Society's Cancer Survivor Transition Study examined (1) characteristics of breast, prostate, and colorectal cancer survivors (n = 1188) within the first year of completing treatment who are most and least prepared for re-entry; and (2) how preparedness level and other characteristics are related to cancer-related symptom management...
February 21, 2017: Annals of Behavioral Medicine: a Publication of the Society of Behavioral Medicine
https://www.readbyqxmd.com/read/28224172/multi-parametric-mri-findings-of-granulomatous-prostatitis-developing-after-intravesical-bacillus-calmette-gu%C3%A3-rin-therapy
#15
Josh Gottlieb, Robert Princenthal, Martin I Cohen
PURPOSE: To evaluate the multi-parametric MRI (mpMRI) findings in patients with biopsy-proven granulomatous prostatitis and prior Bacillus Calmette-Guérin (BCG) exposure. MATERIALS AND METHODS: MRI was performed in six patients with pathologically proven granulomatous prostatitis and a prior history of bladder cancer treated with intravesical BCG therapy. Multi-parametric prostate MRI images were recorded on a GE 750W or Philips Achieva 3.0 Tesla MRI scanner with high-resolution, small-field-of-view imaging consisting of axial T2, axial T1, coronal T2, sagittal T2, axial multiple b-value diffusion (multiple values up to 1200 or 1400), and dynamic contrast-enhanced 3D axial T1 with fat suppression sequence...
February 21, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28224113/intensity-modulated-radiation-therapy-with-stereotactic-body-radiation-therapy-boost-for-unfavorable-prostate-cancer-a-report-on-3-year-toxicity
#16
Ima Paydar, Abigail Pepin, Robyn A Cyr, Joseph King, Thomas M Yung, Elizabeth G Bullock, Siyuan Lei, Andrew Satinsky, K William Harter, Simeng Suy, Anatoly Dritschilo, John H Lynch, Thomas P Kole, Sean P Collins
BACKGROUND: Recent data suggest that intensity-modulated radiation therapy (IMRT) plus brachytherapy boost for unfavorable prostate cancer provides improved biochemical relapse-free survival over IMRT alone. Stereotactic body radiation therapy (SBRT) may be a less invasive alternative to brachytherapy boost. Here, we report the 3-year gastrointestinal (GI) and genitourinary (GU) toxicities of IMRT plus SBRT boost. MATERIALS AND METHODS: Between March 2008 and September 2012, patients with prostate cancer were treated with robotic SBRT (19...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28224100/early-infant-male-circumcision-systematic-review-risk-benefit-analysis-and-progress-in-policy
#17
Brian J Morris, Sean E Kennedy, Alex D Wodak, Adrian Mindel, David Golovsky, Leslie Schrieber, Eugenie R Lumbers, David J Handelsman, John B Ziegler
AIM: To determine whether recent evidence-based United States policies on male circumcision (MC) apply to comparable Anglophone countries, Australia and New Zealand. METHODS: Articles in 2005 through 2015 were retrieved from PubMed using the keyword "circumcision" together with 36 relevant subtopics. A further PubMed search was performed for articles published in 2016. Searches of the EMBASE and Cochrane databases did not yield additional citable articles. Articles were assessed for quality and those rated 2+ and above according to the Scottish Intercollegiate Grading System were studied further...
February 8, 2017: World Journal of Clinical Pediatrics
https://www.readbyqxmd.com/read/28223547/cabozantinib-targets-bone-microenvironment-modulating-human-osteoclast-and-osteoblast-functions
#18
Marco Fioramonti, Daniele Santini, Michele Iuliani, Giulia Ribelli, Paolo Manca, Nicola Papapietro, Filippo Spiezia, Bruno Vincenzi, Vincenzo Denaro, Antonio Russo, Giuseppe Tonini, Francesco Pantano
Cabozantinib, a c-MET and vascular endothelial growth factor receptor 2 inhibitor, demonstrated to prolong progression free survival and improve skeletal disease-related endpoints in castration-resistant prostate cancer and in metastatic renal carcinoma. Our purpose is to investigate the direct effect of cabozantinib on bone microenvironment using a total human model of primary osteoclasts and osteoblasts.Osteoclasts were differentiated from monocytes isolated from healthy donors; osteoblasts were derived from human mesenchymal stem cells obtained from bone fragments of orthopedic surgery patients...
February 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28223545/ring-finger-protein-6-promotes-breast-cancer-cell-proliferation-by-stabilizing-estrogen-receptor-alpha
#19
Yuanying Zeng, Xin Xu, Siyu Wang, Zubin Zhang, Yan Liu, Kunkun Han, Biyin Cao, Xinliang Mao
Ring finger protein 6 (RNF6) is a key oncogene in both prostate cancer and leukemia, but its role is elusive in breast cancer. In the present study, we found that RNF6 was overexpressed in more than 70% of breast cancer tissues and it was associated with overall survival. RNF6 increased breast cancer cell proliferation, migration and reduced cell sensitivity to doxorubicin. Further studies showed that RNF6 was closely associated with increased expression of estrogen receptor, a critical factor in the development of breast cancers...
February 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28223429/cancer-mortality-in-hispanic-ethnic-groups
#20
Paulo S Pinheiro, Karen E Callahan, Rebecca L Siegel, Hongbin Jin, Cyllene R Morris, Edward J Trapido, Scarlett Lin Gomez
Background: Cancer is the leading cause of death among Hispanics. The burden of cancer mortality within Hispanic groups has not been well quantified.Methods: Cancer mortality rates for 2008-2012 in Florida were computed on the basis of race, ethnicity, and birthplace, specifically focusing on major Hispanic groups-Mexicans, Puerto Ricans, Cubans, Central Americans, South Americans, and Dominicans. Age-adjusted mortality rate ratios derived from negative binomial regression were used to compare Hispanics, aggregated and by group, to nonHispanic whites (NHW)...
February 21, 2017: Cancer Epidemiology, Biomarkers & Prevention
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