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https://www.readbyqxmd.com/read/28648008/-circulating-tumor-cells-in-patients-with-breast-tumors-were-detected-by-a-novel-device-a-multicenter-clinical-trial-in-china
#1
J B Li, C Z Geng, M Yan, Y S Wang, Q C Ouyang, Y M Yin, L N Wu, J He, Z F Jiang
Objective: Circulating tumor cells (CTC) have become an important part of liquid biopsy, which have underwent a process from simple counting to molecular typing and genotyping. To this end, we used Cellcollector to verify the effectiveness and safety of CTC detection in patients with breast tumor, and to conduct the following analysis. Methods: One hundred and ninety patients who received treatment in six leading Chinese cancer centers were involved from April to August in 2016. Among which, 127 patients were diagnosed as metastatic breast cancer, and the other 63 patients as benign breast tumors...
June 27, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28646744/systematic-biobanking-novel-imaging-techniques-and-advanced-molecular-analysis-for-precise-tumor-diagnosis-and-therapy-the-polish-mobit-project
#2
Jacek Niklinski, Adam Kretowski, Marcin Moniuszko, Joanna Reszec, Anna Michalska-Falkowska, Magdalena Niemira, Michal Ciborowski, Radoslaw Charkiewicz, Dorota Jurgilewicz, Miroslaw Kozlowski, Rodryg Ramlau, Cezary Piwkowski, Miroslaw Kwasniewski, Monika Kaczmarek, Andrzej Ciereszko, Tomasz Wasniewski, Robert Mroz, Wojciech Naumnik, Ewa Sierko, Magdalena Paczkowska, Joanna Kisluk, Anetta Sulewska, Adam Cybulski, Zenon Mariak, Boguslaw Kedra, Jacek Szamatowicz, Paweł Kurzawa, Lukasz Minarowski, Angelika Edyta Charkiewicz, Barbara Mroczko, Jolanta Malyszko, Christian Manegold, Lothar Pilz, Heike Allgayer, Mohammed L Abba, Hartmut Juhl, Frauke Koch
Personalized and precision medicine is gaining recognition due to the limitations by standard diagnosis and treatment; many areas of medicine, from cancer to psychiatry, are moving towards tailored and individualized treatment for patients based on their clinical characteristics and genetic signatures as well as novel imaging techniques. Advances in whole genome sequencing have led to identification of genes involved in a variety of diseases. Moreover, biomarkers indicating severity of disease or susceptibility to treatment are increasingly being characterized...
June 21, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28644958/translating-cancer-epigenomics-into-the-clinic-focus-on-lung-cancer
#3
REVIEW
Josep Mari-Alexandre, Angel Diaz-Lagares, Maria Villalba, Oscar Juan, Ana B Crujeiras, Alfonso Calvo, Juan Sandoval
Epigenetic deregulation is increasingly being recognized as a hallmark of cancer. Recent studies have identified many new epigenetic biomarkers, some of which are being introduced into clinical practice for diagnosis, molecular classification, prognosis or prediction of response to therapies. O-6-methylguanine-DNA methyltransferase gene is the most clinically advanced epigenetic biomarker as it predicts the response to temozolomide and carmustine in gliomas. Therefore, epigenomics may represent a novel and promising tool for precision medicine, and in particular, the detection of epigenomic biomarkers in liquid biopsies will be of great interest for monitoring diseases in patients...
June 2, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28642281/utility-of-genomic-analysis-in-circulating-tumor-dna-from-patients-with-carcinoma-of-unknown-primary
#4
Shumei Kato, Nithya Krishnamurthy, Kimberly C Banks, Pradip De, Kirstin Williams, Casey Williams, Brian Leyland-Jones, Scott M Lippman, Richard B Lanman, Razelle Kurzrock
Carcinoma of unknown primary (CUP) is a rare and difficult-to-treat malignancy, the management of which might be improved by the identification of actionable driver mutations. We interrogated interrogated 54-70 genes in 442 patients with CUP using targeted clinical-grade, next-generation sequencing (NGS) of circulating tumor DNA (ctDNA). Overall, 80% of patients exhibited ctDNA alterations; 66%, ≥ 1 characterized alteration(s) excluding variants of unknown significance. TP53-associated genes were most commonly altered (37...
June 22, 2017: Cancer Research
https://www.readbyqxmd.com/read/28638271/proex-c-as-diagnostic-marker-for-detection-of-urothelial-carcinoma-in-urinary-samples-a-review
#5
REVIEW
Gerardo Botti, Maria Gabriella Malzone, Elvira La Mantia, Micaela Montanari, Daniela Vanacore, Sabrina Rossetti, Vincenzo Quagliariello, Carla Cavaliere, Rossella Di Franco, Luigi Castaldo, Gianluca Ametrano, Francesca Cappuccio, Francesco Jacopo Romano, Raffaele Piscitelli, Maria Filomena Pepe, Carmine D'Aniello, Gaetano Facchini
The gold standard for the detection of urothelial carcinoma is represented by urethro-cystoscopy and biopsy. Both procedures are invasive and expensive and therefore cytology is often used as first approach to investigate on a possible neoplasia, being a safe and cost-effective diagnostic modality of evaluation. Because cytology alone is not highly sensitive for detection of low grade urothelial carcinoma and recurrence of the disease, several adjunct markers and urine based tests for urothelial carcinoma have been developed, which can help in the final diagnosis...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/28637650/achalasia-leading-to-diagnosis-of-adenocarcinoma-of-the-oesophagus
#6
Jonathan Segal, Ayodele Lagundoye, Martyn Carter
A 50-year-old male with a 7 month history of progressive dysphagia to solids then subsequently to liquids. He underwent a diagnostic gastroscopy which was normal. A further barium swallow suggested achalasia. He was referred to a tertiary centre, where he underwent pH and manometry studies which confirmed a diagnosis of achalasia. He was referred for a laparoscopic cardiomyotomy, and at surgery there was a suspected tumour at the gastro-oesophageal junction. A follow-up endoscopy with biopsies was normal...
June 20, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28637314/dna-methylation-signatures-and-coagulation-factors-in-the-peripheral-blood-leucocytes-of-epithelial-ovarian-cancer
#7
Lian Li, Hong Zheng, Yubei Huang, Caiyun Huang, Shuang Zhang, Jing Tian, Pei Li, Anil K Sood, Wei Zhang, Kexin Chen
Solid tumors are increasingly recognized as a systemic disease that is manifested by changes in DNA, RNA, proteins, and metabolites in the blood. Whereas many studies have reported gene mutation events in the circulation, few studies have focused on epigenetic DNA methylation markers. To identify DNA methylation biomarkers in peripheral blood for ovarian cancer, we performed a two-stage epigenome-wide association study. In the discovery stage, we measured genome wide DNA methylation for 485,000 CpG sites in peripheral blood in 24 epithelial ovarian cancer cases and 24 age-matched healthy controls...
June 16, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28634607/a-high-throughput-microfluidic-platform-for-size-selective-enrichment-of-cell-populations-in-tissue-and-blood-samples
#8
Nivedita Nivedita, Neha Garg, Abraham P Lee, Ian Papautsky
Numerous applications in biology and medicine require the efficient and reliable separation of cells for disease diagnosis, genetic analysis, drug screening, and therapeutics. In this work, we demonstrate a novel technology that integrates a passive and an active device to separate, enrich and release cells on-demand from a complex blood sample, or cancer cells derived from a tissue biopsy. We exploit the high throughput (>1 mL min(-1)), size-based sorting capability of the passive spiral inertial microfluidic (iMF) device to focus particles/cells towards an active lateral cavity acoustic transducer (LCAT) device for size-selective enrichment...
June 21, 2017: Analyst
https://www.readbyqxmd.com/read/28631158/rapid-and-reliable-steroid-hormone-profiling-in-tursiops-truncatus-blubber-using-liquid-chromatography-tandem-mass-spectrometry-lc-ms-ms
#9
Ashley S P Boggs, Tracey B Schock, Lori H Schwacke, Thomas M Galligan, Jeanine S Morey, Wayne E McFee, John R Kucklick
Monitoring of marine mammal steroid hormone status using matrices alternative to blood is desirable due to the ability to remotely collect samples, which minimizes stress to the animal. However, measurement techniques in alternative matrices such as blubber described to date are limited in the number and types of hormones measured. Therefore, a new method using bead homogenization to QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) extraction, C18 post extraction cleanup and analysis by liquid chromatography tandem mass spectrometry (LC-MS/MS) was developed and applied to the measurement of hormone suites in bottlenose dolphin blubber...
June 19, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28629844/circulating-tumor-dna-solid-data-from-liquid-biopsies
#10
EDITORIAL
David S Schrump
No abstract text is available yet for this article.
May 25, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28627779/new-horizon-for-breast-cancer-biomarker-discoveries-what-might-the-liquid-biopsy-of-nipple-aspirate-fluid-hold
#11
Ferdinando Mannello
The existence of cellular, molecular and biochemical heterogeneity of human breast cancers reveals the intricacy of biomarkers complexity, stimulating studies on new approaches (like "liquid biopsies") for the improvements in precision medicine. Breast cancer is recognized as a leading cause of morbidity and mortality worldwide with tumors significantly diverse and containing many types of cells showing different genetic and epigenetic profiles. In this field, the technology of Liquid Biopsy (applied to a fluid produced by breast gland, named nipple aspirate fluids, NAF) highlights the power of combining basic and clinical research...
June 19, 2017: Proteomics. Clinical Applications
https://www.readbyqxmd.com/read/28626960/whole-blood-taurine-concentrations-in-cats-with-intestinal-disease
#12
A Kathrani, A J Fascetti, J A Larsen, C Maunder, E J Hall
BACKGROUND: Increased delivery of taurine-conjugated bile acids to the distal bowel can lead to dysbiosis resulting in colitis in mouse models of inflammatory bowel disease. A similar situation also could occur in cats with intestinal disease and might therefore result in decreased whole-body taurine concentration. HYPOTHESIS/OBJECTIVES: To determine whether whole-blood taurine concentrations are decreased at the time of diagnosis in cats with intestinal disease and to correlate concentrations with clinical and laboratory variables...
June 19, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28626429/the-potential-for-circulating-tumor-cells-in-pancreatic-cancer-management
#13
REVIEW
Michael Pimienta, Mouad Edderkaoui, Ruoxiang Wang, Stephen Pandol
Pancreatic cancer is one the most lethal malignancies. Only a small proportion of patients with this disease benefit from surgery. Chemotherapy provides only a transient benefit. Though much effort has gone into finding new ways for early diagnosis and treatment, average patient survival has only been improved in the order of months. Circulating tumor cells (CTCs) are shed from primary tumors, including pre-malignant phases. These cells possess information about the genomic characteristics of their tumor source in situ, and their detection and characterization holds potential in early cancer diagnosis, prognosis, and treatment...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28625771/comparison-of-plasma-to-tissue-dna-mutations-in-surgical-patients-with-non-small-cell-lung-cancer
#14
Kezhong Chen, Jingbo Zhang, Tian Guan, Fan Yang, Feng Lou, Wei Chen, Mingyu Zhao, Jay Zhang, Siyi Chen, Jun Wang
OBJECTIVE: Noninvasive liquid biopsies of circulating tumor DNA (ctDNA) can be used to assess non-small cell lung cancer (NSCLC), but previous work focused on patients with advanced-stage cancer. Thus, we evaluated the feasibility and their potential clinical application of circulating tumor DNA approached for surgical patients with NSCLC. METHOD: Consecutive patients with suspected lung cancer who underwent curative-intent lung resection were enrolled prospectively in this study...
May 24, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28625643/sequential-liquid-biopsies-reveal-dynamic-alterations-of-egfr-driver-mutations-and-indicate-egfr-amplification-as-a-new-mechanism-of-resistance-to-osimertinib-in-nsclc
#15
Franciele H Knebel, Fabiana Bettoni, Andrea K Shimada, Manoel Cruz, João Victor Alessi, Marcelo V Negrão, Luiz Fernando L Reis, Artur Katz, Anamaria A Camargo
Osimertinib is an EGFR-T790M-specific TKI, which has demonstrated impressive response rates in NSCLC, after failure to first-line anti-EGFR TKIs. However, acquired resistance to osimertinib is also observed and the molecular mechanisms of resistance are not yet fully understood. Monitoring and managing NSCLC patients who progressed on osimertinib is, therefore, emerging as an important clinical challenge. Sequential liquid biopsies were used to monitor a patient with EGFR-exon19del positive NSCLC, who received erlotinib and progressed through the acquisition of the EGFR-T790M mutation...
June 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28625639/longitudinal-monitoring-of-ctdna-egfr-mutation-burden-from-urine-correlates-with-patient-response-to-egfr-tkis-a-case-series
#16
Nishan Tchekmedyian, Raja Mudad, Fernando F Blanco, Victoria M Raymond, Jordan Garst, Mark G Erlander, Eric Haura, David Berz
Targetable, somatic EGFR mutations are highly prevalent in patients with non-small cell lung cancer (NSCLC), making them eligible for tyrosine kinase inhibitor (TKI) therapy. Circulating tumor DNA (ctDNA), isolated from blood or urine, has been demonstrated to reliably identify somatic tumor associated EGFR mutations, specifically in patients with inconclusive biopsy. When conventional imaging modalities are inconclusive, quantitative assessment of systemic ctDNA burden has the potential to assess therapeutic response...
June 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28623974/increased-placental-phospholipase-a2-gene-expression-and-free-f2-isoprostane-levels-in-response-to-oxidative-stress-in-preeclampsia
#17
M Brien, J Larose, K Greffard, P Julien, J F Bilodeau
Vasoactive eicosanoids such as thromboxane (TX) A2 and F2-isoprostanes (F2-isoPs) were shown to be increased in the preeclamptic placenta. Only one of the 64 possible isomers of F2-isoPs derived from the oxidation of arachidonic acid was investigated in the placenta so far. F2-isoPs are released from membrane phospholipids by phospholipases A2 (PLA2) and were shown to act on the TXA2 receptor (TBXA2R). However, the PLA2 deregulated in preeclampsia (PE) remains to be determined. In this study, we analyzed the concentrations of six isomers of F2-isoPs; 8-iso-PGF2α, 8-iso-15(R)-PGF2α, 15(R)-PGF2α, iPF2α-IV, iPF2α-VI, 5-iPF2α-VI and the concentrations of the stable metabolites of TXA2, TXB2, by high performance liquid chromatography coupled with tandem mass spectrometry in placentas of PE (n = 17) and normotensive (n = 15) pregnancies according to the biopsy site: peri-insertion or periphery...
July 2017: Placenta
https://www.readbyqxmd.com/read/28618402/epithelial-to-mesenchymal-transition-circulating-tumor-cells-and-cancer-metastasis-mechanisms-and-clinical-applications
#18
REVIEW
Xiao-Xiang Jie, Xiao-Yan Zhang, Cong-Jian Xu
Epithelial-to-mesenchymal transition (EMT) endows epithelial cells with enhanced motility and invasiveness, allowing them to participate in many physiological and pathological processes. Epithelial-to-mesenchymal transition contributes to the generation of circulating tumor cells (CTCs) in epithelial cancers because it increases tumor cell invasiveness, promotes tumor cell intravasation and ensures tumor cell survival in the peripheral system. Although the contribution of epithelial-to-mesenchymal transition to tumor cell invasiveness has been confirmed, the role epithelial-to-mesenchymal transition plays in metastasis remains debated...
May 26, 2017: Oncotarget
https://www.readbyqxmd.com/read/28616901/-the-methods-and-clinical-significance-of-early-diagnosis-of-lung-cancer
#19
REVIEW
Wei-Min Li, Shuang Zhao, Lun-Xu Liu
Lung cancer is the leading contributor to morbidity and mortality from cancer worldwide, with its 5-year overall survival being only about 15.6%. Due to the lack of specific early screening methods for lung cancer, about 75% patients are diagnosed late. Therefore, it remains the big challenge for the early diagnosis of lung cancer. We need to pay more attention to the screening of lung cancer, and more precise assessment and management to the pulmonary nodules screened out. Further study on liquid biopsy, optimization of new fiberoptic bronchoscopy and the sampling methods to harvest small volume of lung tissue, could be helpful to improve the early diagnosis of lung cancer...
May 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28616676/-liquid-biopsy-a-blood-sample-for-early-recognition-and-therapy-control-in-lung-cancer-patients
#20
K Hekmat, C Bruns
No abstract text is available yet for this article.
June 14, 2017: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
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