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https://www.readbyqxmd.com/read/28813037/concomitant-bladder-cancer-and-prostate-cancer-challenges-and-controversies
#1
REVIEW
Antonio Lopez-Beltran, Liang Cheng, Francesco Montorsi, Maria Scarpelli, Maria R Raspollini, Rodolfo Montironi
Radical cystoprostatectomy (RCP) followed by bilateral pelvic lymphadenectomy and urinary diversion remains the gold-standard therapy for men with localized muscle-invasive bladder cancer (MIBC). Prostate cancer might be incidentally detected at the time of RCP with a reported prevalence of 24-51%. Typically, these patients are considered to have clinically insignificant disease, but data from emerging series challenge this assumption and suggest that some of these tumours might be aggressive, or somehow increase the aggressiveness of the associated MIBC, and can negatively influence the patient's overall survival outcomes...
August 16, 2017: Nature Reviews. Urology
https://www.readbyqxmd.com/read/28801547/early-changes-in-plasma-dna-levels-of-mutant-kras-as-a-sensitive-marker-of-response-to-chemotherapy-in-pancreatic-cancer
#2
Marzia Del Re, Caterina Vivaldi, Eleonora Rofi, Enrico Vasile, Mario Miccoli, Chiara Caparello, Paolo Davide d'Arienzo, Lorenzo Fornaro, Alfredo Falcone, Romano Danesi
Pancreatic cancer (PDAC) is still lacking of reliable markers to monitor tumor response. CA 19-9 is the only biomarker approved, despite it has several limitations in sensitivity and specificity. Since mutations of KRAS occur in more than 90% of tumors, its detection in circulating free tumor DNA (cftDNA) could represent a biomarker to monitor chemotherapy response. Twenty-seven advanced PDAC patients given first-line 5-fluorouracil, irinotecan and oxaliplatin or gemcitabine and nab-paclitaxel were enrolled...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28798838/simultaneous-measurement-of-erythrocyte-deformability-and-blood-viscoelasticity-using-micropillars-and-co-flowing-streams-under-pulsatile-blood-flows
#3
Yang Jun Kang
The biophysical properties of blood provide useful information on the variation in hematological disorders or diseases. In this study, a simultaneous measurement method of RBC (Red Blood Cell) deformability and blood viscoelasticity is proposed by evaluating hemodynamic variations through micropillars and co-flowing streams under sinusoidal blood flow. A disposable microfluidic device is composed of two inlets and two outlets, two upper side channels, and two lower side channels connected to one bridge channel...
January 2017: Biomicrofluidics
https://www.readbyqxmd.com/read/28797111/angiogenic-t-cell-expansion-correlates-with-severity-of-peripheral-vascular-damage-in-systemic-sclerosis
#4
Mirko Manetti, Sara Pratesi, Eloisa Romano, Silvia Bellando-Randone, Irene Rosa, Serena Guiducci, Bianca Saveria Fioretto, Lidia Ibba-Manneschi, Enrico Maggi, Marco Matucci-Cerinic
The mechanisms underlying endothelial cell injury and defective vascular repair in systemic sclerosis (SSc) remain unclear. Since the recently discovered angiogenic T cells (Tang) may have an important role in the repair of damaged endothelium, this study aimed to analyze the Tang population in relation to disease-related peripheral vascular features in SSc patients. Tang (CD3+CD31+CXCR4+) were quantified by flow cytometry in peripheral blood samples from 39 SSc patients and 18 healthy controls (HC). Circulating levels of the CXCR4 ligand stromal cell-derived factor (SDF)-1α and proangiogenic factors were assessed in paired serum samples by immunoassay...
2017: PloS One
https://www.readbyqxmd.com/read/28796991/epidemiology-of-intracranial-and-extracranial-large-artery-stenosis-in-a-population-based-study-of-stroke-in-the-middle-east
#5
Hamidreza Saber, Amin Amiri, Amanda G Thrift, Saverio Stranges, Reza Bavarsad Shahripour, Mohammad T Farzadfard, Naghmeh Mokhber, Réza Behrouz, Mahmoud Reza Azarpazhooh
BACKGROUND: Intracranial large-artery disease (LAD) is a predominant vascular lesion found in patients with stroke of Asian, African, and Hispanic origin, whereas extracranial LAD is more prevalent among Caucasians. These patterns are not well-established in the Middle East. We aimed to characterize the incidence, risk factors, and long-term outcome of LAD strokes in a Middle-Eastern population. METHODS: The Mashhad Stroke Incidence Study is a community-based study that prospectively ascertained all cases of stroke among the 450,229 inhabitants of Mashhad, Iran between 2006 and 2007...
August 11, 2017: Neuroepidemiology
https://www.readbyqxmd.com/read/28755084/design-and-evaluation-of-two-multi-pinhole-collimators-for-brain-spect
#6
Ling Chen, Benjamin M W Tsui, Greta S P Mok
OBJECTIVE: SPECT is a powerful tool for diagnosing or staging brain diseases such as Alzheimer's disease (AD) and Parkinson's disease (PD) but is limited by its inferior resolution and sensitivity. At the same time, pinhole SPECT provides superior resolution and detection efficiency trade-off as compared to the conventional parallel-hole collimator for imaging small field-of-view (FOV), which fits for the case of brain imaging. In this study, we propose to develop and evaluate two multi-pinhole (MPH) collimator designs to improve the imaging of cerebral blood flow and striatum...
July 28, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28742791/correlation-between-circulating-tumor-dna-levels-and-response-to-tyrosine-kinase-inhibitors-tki-treatment-in-non-small-cell-lung-cancer
#7
Zhangjing Wei, Wenyue Wang, Zitan Shu, Xue Zhou, Yanfang Zhang
BACKGROUND Clinical monitoring of EGFR-positive NSCLC patients is important to gauge treatment response. The current study addresses the usage of circulating tumor DNA (ctDNA) as a prognostic marker during treatment of first-generation TKIs. MATERIAL AND METHODS Serial samplings of peripheral blood from 200 EGFR-positive NSCLC patients were taken. Baseline ctDNA quantification was conducted by digital droplet PCR before TKI treatment was administered and compared to primary biopsies. Thereafter blood sampling at different treatment cycles were measured and assessed for its prognostic and predictive value...
July 25, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28733559/dynamics-of-egfr-mutations-in-plasma-recapitulates-the-clinical-response-to-egfr-tkis-in-nsclc-patients
#8
Liwen Xiong, Shaohua Cui, Jingyan Ding, Yun Sun, Longfu Zhang, Yizhuo Zhao, Aiqin Gu, Tianqing Chu, Huimin Wang, Hua Zhong, Xin Ye, Yi Gu, Xin Zhang, Min Hu, Liyan Jiang
OBJECTIVES: Genomic profiling using plasma cell-free DNA (cfDNA) represents a non-invasive alternative to tumor re-biopsy, which is challenging in clinical practice. The feasibility of dynamically monitoring epidermal growth factor receptor (EGFR) mutation status using serial plasma samples from non-small cell lung cancer (NSCLC) patients treated by tyrosine kinase inhibitors (TKIs) and its application in tracking clinical response and detection of resistance were investigated. PATIENTS AND METHODS: Forty-five NSCLC patients with EGFR mutation-positive pre-TKI plasma and at least two post-TKI plasma collections were recruited to this study...
July 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28731452/temporal-order-of-alzheimer-s-disease-related-cognitive-marker-changes-in-blsa-and-wrap-longitudinal-studies
#9
Murat Bilgel, Rebecca L Koscik, Yang An, Jerry L Prince, Susan M Resnick, Sterling C Johnson, Bruno M Jedynak
Investigation of the temporal trajectories of currently used neuropsychological tests is critical to identifying earliest changing measures on the path to dementia due to Alzheimer's disease (AD). We used the Progression Score (PS) method to characterize the temporal trajectories of measures of verbal memory, executive function, attention, processing speed, language, and mental status using data spanning normal cognition, mild cognitive impairment, and AD from 1,661 participants with a total of 7,839 visits (age at last visit 77...
July 18, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28727203/the-association-between-acute-mental-stress-and-abnormal-left-atrial-electrophysiology
#10
Wesley T O'Neal, Muhammad Hammadah, Pratik B Sandesara, Zakaria Almuwaqqat, Ayman Samman-Tahhan, Mohamad M Gafeer, Naser Abdelhadi, Kobina Wilmot, Ibhar Al Mheid, Douglas Bremner, Michael Kutner, Elsayed Z Soliman, Amit J Shah, Arshed A Quyyumi, Viola Vaccarino
BACKGROUND: Acute stress may trigger atrial fibrillation (AF), but the underlying mechanisms are unclear. We examined if acute mental stress results in abnormal left atrial electrophysiology as detected by more negative deflection of P-wave terminal force in lead V1 (PTFV1 ), a well-known marker of AF risk. METHODS AND RESULTS: We examined this hypothesis in 422 patients (mean age = 56±10 years; 61% men; 44% white) with stable coronary heart disease who underwent mental (speech task) stress testing...
July 20, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28723342/molecular-analysis-of-circulating-free-dna-from-lung-cancer-patients-in-routine-laboratory-practice-a-cross-platform-comparison-of-three-different-molecular-methods-for-mutation-detection
#11
Stephan Bartels, Sascha Persing, Britta Hasemeier, Elisa Schipper, Hans Kreipe, Ulrich Lehmann
Cell-free DNA (cfDNA), which is isolated from blood plasma, represents a noninvasive source for the detection of mutations conferring resistance against epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors in non-small-cell lung cancer patients. In advanced disease stages, performing regular biopsies is often not possible because of the general health condition of the patients. Furthermore, a biopsy of a single tumor lesion or metastasis may not reflect the heterogeneous genotype of the tumor and its metastases...
July 16, 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/28722675/using-droplet-digital-pcr-to-analyze-mycn-and-alk-copy-number-in-plasma-from-patients-with-neuroblastoma
#12
Marco Lodrini, Annika Sprüssel, Kathy Astrahantseff, Daniela Tiburtius, Robert Konschak, Holger N Lode, Matthias Fischer, Ulrich Keilholz, Angelika Eggert, Hedwig E Deubzer
The invasive nature of surgical biopsies deters sequential application, and single biopsies often fail to reflect tumor dynamics, intratumor heterogeneity and drug sensitivities likely to change during tumor evolution and treatment. Implementing molecular characterization of cell-free neuroblastoma-derived DNA isolated from blood plasma could improve disease assessment for treatment selection and monitoring of patients with high-risk neuroblastoma. We established droplet digital PCR (ddPCR) protocols for MYCN and ALK copy number status in plasma from neuroblastoma patients...
July 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28719018/ante-mortem-csf-tau-levels-correlate-with-post-mortem-tau-pathology-in-ftld
#13
D J Irwin, A Lleó, S X Xie, C T McMillan, D Wolk, E B Lee, V M Van Deerlin, L M Shaw, J Q Trojanowski, M Grossman
OBJECTIVE: To test the hypotheses that 1) antemortem cerebrospinal fluid tau levels correlate with postmortem tau pathology in frontotemporal lobar degeneration and 2) tauopathy patients have higher phosphorylated-tau levels compared to TDP-43 proteinopathy patients while accounting for Alzheimer's disease co-pathology. METHODS: Patients had autopsy-confirmed frontotemporal lobar degeneration with tauopathy (n=31), TDP-43 proteinopathy (n=49), or Alzheimer's disease (n=26) with antemortem cerebrospinal fluid...
July 18, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28717121/impact-of-doppler-ultrasound-on-diagnosis-and-therapy-control-of-lienalis-steal-syndrome-after-liver-transplantation
#14
Eva M Teegen, Timm Denecke, Rosa B Schmuck, Robert Öllinger, Dominik Geisel, Johann Pratschke, Sascha S Chopra
BACKGROUND Lienalis steal syndrome is a rare complication after orthotopic liver transplantation leading to severe complications. Routine duplex sonography allows early and safe detection of lienalis steal syndrome and secondarily helps to monitor the outcome by evaluating the hemodynamics. MATERIAL AND METHODS This analysis included eight patients who after orthotopic liver transplantation needed splenic artery embolization due to lienalis steal syndrome. Lienalis steal syndrome was assumed in case of elevated transaminases, bilirubinemia or persistent ascites, and the absence of further pathologies...
July 18, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/28715306/a-data-rich-longitudinal-wellness-study-for-the-digital-age-fixing-a-broken-medical-system-requires-data-about-each-patient
#15
Gustavo Glusman
We live in an age of plentiful information, collected continuously by pervasive gadgetry, distributed through digital and social networks, and mined deeply by ever-more-powerful analytics systems. And yet, one of the things we know the least about is our bodies. When it comes to our own health, we are driving blindly. Modern medicine has clearly been remarkably successful, as evidenced by continually growing life expectancies. For example, the number of people 65 and older in the United States has seen a steady increase over the last century, rising from 3...
July 2017: IEEE Pulse
https://www.readbyqxmd.com/read/28714423/distinctive-neuropsychological-profiles-differentiate-patients-with-functional-memory-disorder-from-patients-with-amnestic-mild-cognitive-impairment
#16
Sarah J Wakefield, Daniel J Blackburn, Kirsty Harkness, Aijaz Khan, Markus Reuber, Annalena Venneri
OBJECTIVES: Patients with functional memory disorder (FMD) report significant memory failures in everyday life. Differentiating these patients from those with memory difficulties due to early stage neurodegenerative conditions is clinically challenging. The current study explored whether distinctive neuropsychological profiles could be established, suitable to differentiate patients with FMD from healthy individuals and those experiencing amnestic mild cognitive impairment (a-MCI). METHODS: Patients with a clinical diagnosis of FMD were compared with patients with a-MCI, and healthy matched controls on several tests assessing different cognitive functions...
July 17, 2017: Acta Neuropsychiatrica
https://www.readbyqxmd.com/read/28711766/a-tool-for-automated-diabetic-retinopathy-pre-screening-based-on-retinal-image-computer-analysis
#17
Manuel E Gegundez-Arias, Diego Marin, Beatriz Ponte, Fatima Alvarez, Javier Garrido, Carlos Ortega, Manuel J Vasallo, Jose M Bravo
AIM: This paper presents a methodology and first results of an automatic detection system of first signs of Diabetic Retinopathy (DR) in fundus images, developed for the Health Ministry of the Andalusian Regional Government (Spain). MATERIAL AND METHODS: The system detects the presence of microaneurysms and haemorrhages in retinography by means of techniques of digital image processing and supervised classification. Evaluation was conducted on 1058 images of 529 diabetic patients at risk of presenting evidence of DR (an image of each eye is provided)...
July 8, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28710871/detection-and-quantification-of-coronary-calcium-from-dual-energy-chest-x-rays-phantom-feasibility-study
#18
Bo Zhou, Di Wen, Katelyn Nye, Robert C Gilkeson, Brendan Eck, David Jordan, David L Wilson
PURPOSE: We have demonstrated the ability to identify coronary calcium, a reliable biomarker of coronary artery disease, using non-gated, 2-shot, dual energy (DE) chest x-ray imaging. Here we will use digital simulations, backed up by measurements, to characterize DE calcium signals and the role of potential confounds such as beam hardening, x-ray scatter, cardiac motion, and pulmonary artery pulsation. For the DE calcium signal, we will consider quantification, as compared to CT calcium score, and visualization...
July 15, 2017: Medical Physics
https://www.readbyqxmd.com/read/28704974/genotypic-regulation-of-aflatoxin-accumulation-but-not-aspergillus-fungal-growth-upon-post-harvest-infection-of-peanut-arachis-hypogaea-l-seeds
#19
Walid Ahmed Korani, Ye Chu, Corley Holbrook, Josh Clevenger, Peggy Ozias-Akins
Aflatoxin contamination is a major economic and food safety concern for the peanut industry that largely could be mitigated by genetic resistance. To screen peanut for aflatoxin resistance, ten genotypes were infected with a green fluorescent protein (GFP)-expressing Aspergillus flavus strain. Percentages of fungal infected area and fungal GFP signal intensity were documented by visual ratings every 8 h for 72 h after inoculation. Significant genotypic differences in fungal growth rates were documented by repeated measures and area under the disease progress curve (AUDPC) analyses...
July 12, 2017: Toxins
https://www.readbyqxmd.com/read/28704405/community-health-workers-for-non-communicable-diseases-prevention-and-control-in-developing-countries-evidence-and-implications
#20
Gursimer Jeet, J S Thakur, Shankar Prinja, Meenu Singh
BACKGROUND: National programs for non-communicable diseases (NCD) prevention and control in different low middle income countries have a strong community component. A community health worker (CHW) delivers NCD preventive services using informational as well as behavioural approaches. Community education and interpersonal communication on lifestyle modifications is imparted with focus on primordial prevention of NCDs and screening is conducted as part of early diagnosis and management...
2017: PloS One
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