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https://www.readbyqxmd.com/read/28448959/detection-of-circulating-tumor-cells-and-circulating-tumor-microemboli-in-gastric-cancer
#1
Xiumei Zheng, Li Fan, Pengfei Zhou, Hong Ma, Shaoyi Huang, Dandan Yu, Lei Zhao, Shengli Yang, Jun Liu, Ai Huang, Congli Cai, Xiaomeng Dai, Tao Zhang
PURPOSE: Gastric cancer studies indicated a potential correlation between circulating tumor cells (CTCs) in peripheral blood and tumor relapse/metastasis. The prevalence and significance of circulating tumor microemboli (CTM) in gastric cancer remain unknown. We investigated the prevalence and prognostic value of CTCs and CTM for progression-free survival (PFS) and overall survival (OS) in gastric cancer patients. METHODS: Eighty-one gastric cancer patients consented to provide 5ml of peripheral blood before systematic therapy...
April 24, 2017: Translational Oncology
https://www.readbyqxmd.com/read/28447326/ct-colonography-role-in-fobt-based-screening-programs-for-colorectal-cancer
#2
REVIEW
Lapo Sali, Grazia Grazzini, Mario Mascalchi
Computed tomographic colonography (CTC) is a minimally invasive imaging examination for the colon, and is safe, well tolerated and accurate for the detection of colorectal cancer (CRC) and advanced adenoma. While the role of CTC as a primary test for population screening of CRC is under investigation, the fecal occult blood test (FOBT) has been recommended for population screening of CRC in Europe. Subjects with positive FOBT are invited to undergo total colonoscopy, which has some critical issues, such as suboptimal compliance, contraindications and the possibility of an incomplete exploration of the colon...
April 26, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28446532/next-generation-sequencing-ngs-analysis-on-single-circulating-tumor-cells-ctcs-with-no-need-of-whole-genome-amplification-wga
#3
Raffaele Palmirotta, Domenica Lovero, Erica Silvestris, Claudia Felici, Davide Quaresmini, Paola Cafforio, Franco Silvestris
BACKGROUND: Isolation and genotyping of circulating tumor cells (CTCs) is gaining an increasing interest by clinical researchers in oncology not only for investigative purposes, but also for concrete application in clinical practice in terms of diagnosis, prognosis and decision treatment with targeted therapies. For the mutational analysis of single CTCs, the most advanced biotechnology methodology currently available includes the combination of whole genome amplification (WGA) followed by next-generation sequencing (NGS)...
May 2017: Cancer Genomics & Proteomics
https://www.readbyqxmd.com/read/28443073/feed-supplementation-with-red-seaweeds-chondrus-crispus-and-sarcodiotheca-gaudichaudii-reduce-salmonella-enteritidis-in-laying-hens
#4
Garima Kulshreshtha, Bruce Rathgeber, Janice MacIsaac, Martine Boulianne, Lehoux Brigitte, Glenn Stratton, Nikhil A Thomas, Alan T Critchley, Jeff Hafting, Balakrishnan Prithiviraj
Salmonella Enteritidis is vertically transmitted to eggs from laying hens through infected ovaries and oviducts. S. Enteritidis can also penetrate the eggshell from contaminated feces. Reducing S. Enteritidis in laying hens is vital to provide safer eggs and minimize the spread of salmonellosis to humans. Antibiotics have been widely used to control bacterial diseases in broilers and laying hens. However, there is a major concern that the use of antibiotics leads to the development of antibiotic resistance and adverse effects on microbiota of the treated birds...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28442757/comparison-of-circulating-tumour-cells-and-circulating-cell-free-epstein-barr-virus-dna-in-patients-with-nasopharyngeal-carcinoma-undergoing-radiotherapy
#5
Jess Honganh Vo, Wen Long Nei, Min Hu, Wai Min Phyo, Fuqiang Wang, Kam Weng Fong, Terence Tan, Yoke Lim Soong, Shie Lee Cheah, Kiattisa Sommat, Huiyu Low, Belinda Ling, Johnson Ng, Wan Loo Tan, Kian Sing Chan, Lynette Oon, Jackie Y Ying, Min-Han Tan
Quantification of Epstein-Barr virus (EBV) cell-free DNA (cfDNA) is commonly used in clinical settings as a circulating biomarker in nasopharyngeal carcinoma (NPC), but there has been no comparison with circulating tumour cells (CTCs). Our study aims to compare the performance of CTC enumeration against EBV cfDNA quantitation through digital PCR (dPCR) and quantitative PCR. 74 plasma samples from 46 NPC patients at baseline and one month after radiotherapy with or without concurrent chemotherapy were analysed...
December 19, 2016: Scientific Reports
https://www.readbyqxmd.com/read/28442585/next-gen-sequencing-analysis-and-algorithms-for-pdx-and-cdx-models
#6
Garima Khandelwal, Maria Romina Girotti, Christopher Smowton, Sam Taylor, Chris Wirth, Marek Dynowski, Kristopher K Frese, Ged Brady, Caroline Dive, Richard Marais, Crispin Miller
Patient-derived xenograft (PDX) and CTC-derived explant (CDX) models are powerful methods for the study of human disease. In cancer research, these methods have been applied to multiple questions including the study of metastatic progression, genetic evolution and therapeutic drug responses. Since PDX and CDX models can recapitulate the highly heterogeneous characteristics of a patient tumor, as well as their response to chemotherapy, there is considerable interest in combining them with next-generation sequencing (NGS) in order to monitor the genomic, transcriptional, and epigenetic changes that accompany oncogenesis...
April 25, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28442298/how-to-study-and-overcome-tumor-heterogeneity-with-circulating-biomarkers-the-breast-cancer-case
#7
REVIEW
Valentina Appierto, Serena Di Cosimo, Carolina Reduzzi, Valentina Pala, Vera Cappelletti, Maria Grazia Daidone
Breast cancer ranks first among female cancer-related deaths in Western countries. As the primary tumor can often be controlled by surgical resection, the survival of women with breast cancer is closely linked to the incidence of distant metastases. Molecular screening by next generation sequencing highlighted the spatial and temporal heterogeneity of solid tumors as well as the clonal evolution of cancer cells during progression and under treatment pressure. Such findings question whether an optimal assessment of disease progression and a screening for druggable mutations should be based on molecular features of primary or recurrent/metastatic lesions and therefore represent a crucial element for failure or success of personalized medicine...
April 22, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28438124/effectiveness-of-an-individual-online-e-learning-program-about-sexually-transmitted-infections-a-prospective-cohort-study
#8
Linda H A Bos-Bonnie, Jan E A M van Bergen, Ellen Te Pas, Michael A Kijser, Nynke van Dijk
BACKGROUND: Primary health-care professionals play an important role in the treatment and prevention of Sexually Transmitted Infections (STI). Continuing Medical Education (CME)-courses can influence the knowledge and behavior of health-care professionals concerning STI. We performed a prospective cohort study to evaluate if the individual and online e-learning program "The STI-consultation", which uses the Commitment-to-Change (CtC)-method, is able to improve the knowledge, attitude and behavior of Dutch General Practitioners (GPs), concerning the STI-consultation...
April 24, 2017: BMC Family Practice
https://www.readbyqxmd.com/read/28434219/a-hydrogen-peroxide-responsive-nanoprobe-assists-circulating-tumor-cell-identification-and-colorectal-cancer-diagnosis
#9
Chunting Li, Ruijun Pan, Peiyong Li, Qinghua Guan, Junping Ao, Kai Wang, Li Xu, Xiaofei Liang, Xin Jin, Chuan Zhang, Xinyuan Zhu
In clinic, numeration of circulating tumor cells (CTCs) plays a critical role in cancer diagnosis and treatment but conventional CTC identification and counting that rely on specific antibodies to characterize cell's surface antigens are costive and with limitations. Importantly, false positive or negative results may be occurred due to the high heterogeneity and epithelial-mesenchymal transition (EMT) of CTCs. Herein we demonstrated a novel and effective CTC detecting nanoprobe that could rapidly response to the high level of endogenous H2O2 of CTCs and report the signal through fluorescence emission...
April 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28434066/toxicity-and-genotoxicity-of-three-antimicrobials-commonly-used-in-veterinary-medicine
#10
Anahí Magdaleno, Sofía Carusso, Juan Moretton
The toxicity of chlortetracycline (CTC), oxytetracycline (OTC) and enrofloxacin (ENF) was tested on two green algal species: the international standard Pseudokirchneriella subcapitata and the native Argentine species Ankistrodesmus fusiformis. All three antibiotics inhibited the algal growth. The most sensitive species was P. subcapitata, for which the EC50 for CTC, OTC and ENF were 1.19 ± 0.53, 0.92 ± 0.30 and 5.18 ± 3.80 mg L(-1), respectively. The EC50 for A. fusiformis, were 3.23 ± 0...
April 22, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28432950/effects-of-chlortetracycline-and-copper-on-tetracyclines-and-copper-resistance-genes-and-microbial-community-during-swine-manure-anaerobic-digestion
#11
Rui Wang, Meixue Chen, Feng Feng, Junya Zhang, Qianwen Sui, Juan Tong, Yuansong Wei, Dongbin Wei
As antibiotic and heavy metals are over used in the livestock industry, animal manure is a reservoir of antibiotic resistance genes (ARGs). Anaerobic digestion has been reported to have the potential to reduce ARGs. However, few studies investigated whether reduction of ARGs would be affected by different external pressures including antibiotics and heavy metals during anaerobic digestion. The purpose of this study was thus to investigate effects of both chlortetracycline (CTC) and Cu on reduction of ARGs, heavy metal resistance genes (HMRGs) and mobile genetic elements (MGEs) during the swine manure anaerobic digestion...
March 25, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28432274/sensitive-detection-of-viable-circulating-tumor-cells-using-a-novel-conditionally-telomerase-selective-replicating-adenovirus-in-non-small-cell-lung-cancer-patients
#12
Shinsaku Togo, Nobuyoshi Katagiri, Yukiko Namba, Miniwan Tulafu, Kumi Nagahama, Kotarou Kadoya, Kazuya Takamochi, Siaki Oh, Kenji Suzuki, Fuminori Sakurai, Hiroyuki Mizuguchi, Yasuo Urata, Kazuhisa Takahashi
Circulating tumor cells (CTCs) have a crucial role in the clinical outcome of cancer patients. Detection of non-small cell lung cancer (NSCLC) using an antibody against epithelial cell adhesion molecule (EpCAM) in captured CTCs has low sensitivity; the loss of epithelial markers leads to underestimation of CTCs with mesenchymal phenotype. We propose a new approach for detection of viable CTCs, including those with epithelial-mesenchymal transition status (EMT-CTCs), using the new telomerase-specific replication-selective adenovirus (OBP-1101), TelomeScan F35...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28430645/midkine-promotes-hepatocellular-carcinoma-metastasis-by-elevating-anoikis-resistance-of-circulating-tumor-cells
#13
Bin Sun, Congli Hu, Zhibin Yang, Xiaofeng Zhang, Linlin Zhao, Junye Xiong, Junyong Ma, Lei Chen, Haihua Qian, Xiangji Luo, Lehua Shi, Jun Li, Xianshuo Cheng, Zhengfeng Yin
Midkine is overexpressed in hepatocellular carcinoma (HCC) and plays a role in tumor progression, but less is known about its role in resistance of circulating tumor cells (CTCs) to anoikis which leading to recurrence and metastasis. The aim of the present study was to analyze whether midkine was associated with HCC progression with anoikis resistance. We found that cultured HCC cells were more resistant to anoikis, which paralleled midkine expression, and midkine treatment significantly inhibited anoikis in a dose-dependent manner...
March 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28428126/interactions-of-tetracyclines-with-ovalbumin-the-main-allergen-protein-from-egg-white-spectroscopic-and-electrophoretic-studies
#14
Maria Dayanne de A Dantas, Humberto de Araújo Tenório, Thiago Inácio B Lopes, Hugo Juarez V Pereira, Anita J Marsaioli, Isis M Figueiredo, Josué Carinhanha Caldas Santos
The interactions of tetracycline (TC), oxytetracycline (OTC) and chlortetracycline (CTC) with ovalbumin (OVA), the main allergen protein of egg white, were investigated by molecular spectroscopy and electrophoresis at three pH conditions (1.5, 4.6 and 7.4). Molecular and synchronous fluorescence, UV-vis spectroscopy, electrophoresis and (1)H NMR were used to study the interaction process. Tetracyclines interact with ovalbumin fluorescence by a static quenching mechanism with non-fluorescent complex formation changing the native protein structure...
April 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28427756/human-tissue-kallikreins-blood-levels-and-response-to-radiotherapy-in-intermediate-risk-prostate-cancer
#15
Nicola J Nasser, John Thoms, Antoninus Soosaipillai, Melania Pintilie, Ri Wang, Eleftherios P Diamandis, Robert G Bristow
OBJECTIVES: Kallikreins are serine proteases over expressed in many malignancies. In this study, we measure changes in serum kallikrein (KLKs) levels during intensity-modulated radiotherapy (IMRT) in prostate cancer patients, and find potential correlations between serum kallikrein level and normal tissues toxicity during radiation. METHODS: Forty-nine patients with prostate cancer were recruited as follows: group 1, definitive standard fractionation IMRT (78Gy in 39 fractions, n=15); group 2, definitive hypofractionated IMRT (60Gy in 20 fractions, n=15); and group 3, IMRT postprostatectomy (66Gy in 33 fractions, n=19)...
April 17, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28427152/radioligand-therapy-of-metastatic-prostate-cancer-using-177lu-psma-617-after-radiation-exposure-to-223ra-dichloride
#16
Hojjat Ahmadzadehfar, Stefanie Zimbelmann, Anna Yordanova, Rolf Fimmers, Stefan Kürpig, Elisabeth Eppard, Florian C Gaertner, Xiao Wei, Stefan Hauser, Markus Essler
Radioligand therapy with 177Lu-PSMA-617 is an innovative and effective therapy for castrate-resistant metastatic prostate cancer patients. For patients with symptomatic bone metastases without visceral metastases, the guidelines recommend radionuclide therapy with 223Ra-dichloride as a single therapeutic agent or in combination with hormone therapy. The aim of this study was to evaluate the safety of repeated cycles of 177Lu-PSMA-617 after exposure to more cycles of 223Ra. Forty-nine patients were treated with three cycles of Lu-PSMA-617 divided into two groups subjected to a history of therapy with 223Ra...
February 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28427087/pretreatment-serum-uracil-concentration-as-a-predictor-of-severe-and-fatal-fluoropyrimidine-associated-toxicity
#17
Didier Meulendijks, Linda M Henricks, Bart A W Jacobs, Abidin Aliev, Maarten J Deenen, Niels de Vries, Hilde Rosing, Erik van Werkhoven, Anthonius de Boer, Jos H Beijnen, Caroline M P W Mandigers, Marcel Soesan, Annemieke Cats, Jan H M Schellens
BACKGROUND: We investigated the predictive value of dihydropyrimidine dehydrogenase (DPD) phenotype, measured as pretreatment serum uracil and dihydrouracil concentrations, for severe as well as fatal fluoropyrimidine-associated toxicity in 550 patients treated previously with fluoropyrimidines during a prospective multicenter study. METHODS: Pretreatment serum concentrations of uracil and dihydrouracil were measured using a validated LC-MS/MS method. The primary endpoint of this analysis was global (any) severe fluoropyrimidine-associated toxicity, that is, grade ⩾3 toxicity according to the NCI CTC-AE v3...
April 20, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28426707/rare-cell-isolation-and-recovery-on-open-channel-microfluidic-chip
#18
Taisuke Masuda, Woneui Song, Hayao Nakanishi, Wu Lei, Anas Mohd Noor, Fumihito Arai
The ability to accurately detect and analyze rare cells in a cell population is critical not only for the study of disease progression but also for next flow cytometry systems in clinical application. Here, we report the development of a prototype device, the 'Rare cell sorter', for isolating and recovering single rare cells from whole blood samples. On this device, we utilized an open-channel microfluidic chip for rare cell isolation. And the advantage of open-channel allows us to recover the isolated rare cell directly from the chip...
2017: PloS One
https://www.readbyqxmd.com/read/28425472/label-free-single-cell-separation-and-imaging-of-cancer-cells-using-an-integrated-microfluidic-system
#19
Maria Antfolk, Soo Hyeon Kim, Saori Koizumi, Teruo Fujii, Thomas Laurell
The incidence of cancer is increasing worldwide and metastatic disease, through the spread of circulating tumor cells (CTCs), is responsible for the majority of the cancer deaths. Accurate monitoring of CTC levels in blood provides clinical information supporting therapeutic decision making, and improved methods for CTC enumeration are asked for. Microfluidics has been extensively used for this purpose but most methods require several post-separation processing steps including concentration of the sample before analysis...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28424552/prognostic-value-of-circulating-tumor-cells-in-the-peripheral-blood-of-patients-with-esophageal-squamous-cell-carcinoma
#20
Yuanyuan Qiao, Jun Li, Chenghe Shi, Wei Wang, Xiuhua Qu, Ming Xiong, Yulin Sun, Dandan Li, Xiaohang Zhao, Dajin Zhang
OBJECTIVE: Circulating tumor cells (CTCs) of patients with malignant tumors can be used as a prognostic marker. However, there are few relevant reports to date on esophageal squamous cell carcinoma (ESCC). Our study assesses the clinical significance of CTCs in ESCC patients. PATIENTS AND METHODS: CTCs were detected in 103 peripheral blood (PB) samples from 59 ESCC patients. Correlation between CTCs and clinical parameters was analyzed using the χ(2) test or Fisher's exact test...
2017: OncoTargets and Therapy
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