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https://www.readbyqxmd.com/read/28212371/circulating-tumor-cells-in-prostate-cancer-beyond-enumeration
#1
Jie-Fu Chen, Yi-Tsung Lu, Shirley Cheng, Hsian-Rong Tseng, Robert A Figlin, Edwin M Posadas
Circulating tumor cells (CTCs) are a population of rare cancer cells that have detached from the primary tumor and/or metastatic lesions and entered the peripheral circulation. Enumeration of CTCs has demonstrated value as a prognostic biomarker, and newer studies have pointed to information beyond enumeration that is of critical importance in prostate cancer. Technologic advances that permit examination of the morphology, function, and molecular content of CTCs have made it possible to measure these factors as part of liquid biopsy...
January 2017: Clinical Advances in Hematology & Oncology: H&O
https://www.readbyqxmd.com/read/28208771/detecting-blood-based-biomarkers-in-metastatic-breast-cancer-a-systematic-review-of-their-current-status-and-clinical-utility
#2
REVIEW
A M Sofie Berghuis, Hendrik Koffijberg, Jai Prakash, Leon W M M Terstappen, Maarten J IJzerman
Reviews on circulating biomarkers in breast cancer usually focus on one single biomarker or a selective group of biomarkers. An overview summarizing the discovery and evaluation of all blood-based biomarkers in metastatic breast cancer is lacking. This systematic review aims to identify the available evidence of known blood-based biomarkers in metastatic breast cancer, regarding their clinical utility and state-of-the-art position in the validation process. The initial search yielded 1078 original studies, of which 420 were assessed for eligibility...
February 9, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28196593/liquid-biopsies-what-we-do-not-know-yet
#3
REVIEW
Alberto Bardelli, Klaus Pantel
The inherent molecular heterogeneity of metastatic tumors and the ability of cancer genomes to dynamically evolve are not properly captured by tissue specimens. Analysis of cell-free DNA and circulating tumor cells has the potential to change clinical practice by exploiting blood rather than tissue as a source of information. Liquid biopsies are already used to monitor disease response and track the emergence of drug resistance. The suitability of blood-based molecular profiles for early detection and monitoring minimal residual disease is being evaluated...
February 13, 2017: Cancer Cell
https://www.readbyqxmd.com/read/28196386/-liquid-biopsy-detection-of-molecular-markers-for-treatment-decisions-in-lung-cancer
#4
W M Brückl, R M Wirtz, T Bertsch, J H Ficker, A Jung
Personalized, individualized, targeted therapy has successfully found entrance in the palliative treatment of lung cancer as they enable a personalized and individualized strategy going ahead with biomarker testing. Due to the crescending amount of predictive molecular and immunhistochemical analyses at different time points during therapy the need for more and actual tumor tissue increases; however these samples cannot always be obtained without major discomfort for the patients. Therefore, analyses from blood, the so called "liquid biopsy", is an alternative or additional method...
February 14, 2017: Pneumologie
https://www.readbyqxmd.com/read/28195650/cell-tube-block-a-new-technique-to-produce-cell-blocks-from-fluid-cytology-samples
#5
Ricardo Marcos, Marta Santos, Carla Marrinhas, Mario Caniatti
BACKGROUND: Cell blocks are widely used in human cytopathology. Several techniques have been proposed to convert fluid specimens into solid material, which after embedding in paraffin can be used for histochemistry, immunohistochemistry, or molecular testing. In contrast, only in the last few years, have cell blocks begun to be used in the veterinary field. OBJECTIVES: The purpose of the study was to present the production and features of cell tube blocks (CTB) with veterinary liquid samples...
February 13, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28195541/assessment-of-egfr-mutation-status-using-cell-free-dna-from-bronchoalveolar-lavage-fluid
#6
Sojung Park, Jae Young Hur, Kye Young Lee, Jae Cheol Lee, Jin Kyung Rho, Sun Hwa Shin, Chang-Min Choi
BACKGROUND: Much attention has been focused on epidermal growth factor receptor (EGFR) mutation testing since the introduction of EGFR-tyrosine kinase inhibitors have improved survival in EGFR-positive lung cancer patients. Liquid biopsy using circulating tumor cells or cell-free DNA (cfDNA) has enabled less invasive testing, but requires a highly sensitive method. To date, liquid biopsy using bronchoalveolar lavage (BAL) fluid has rarely been used. METHODS: From 20 patients with lung adenocarcinoma, we isolated cfDNA from 20 samples of cell-free BAL fluid and 19 cell-free bronchial washing samples...
February 14, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28193070/toward-liquid-biopsy-determination-of-the-humoral-immune-response-in-cancer-patients-using-halotag-fusion-protein-modified-electrochemical-bioplatforms
#7
María Garranzo-Asensio, Ana Guzman-Aranguez, Carmen Povés, María Jesús Fernández-Aceñero, Rebeca M Torrente-Rodríguez, Víctor Ruiz-Valdepeñas Montiel, Gemma Domínguez, Luis San Frutos, Nuria Rodríguez, Mayte Villalba, José M Pingarrón, Susana Campuzano, Rodrigo Barderas
Autoantibodies raised against tumor-associated antigens have shown high promise as clinical biomarkers for reliable diagnosis, prognosis, and therapy monitoring of cancer. An electrochemical disposable biosensor for the specific and sensitive determination of p53-specific autoantibodies has been developed for the first time in this work. This biosensor involves the use of magnetic microcarriers (MBs) modified with covalently immobilized HaloTag fusion p53 protein as solid supports for the selective capture of specific autoantibodies...
December 20, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/28193007/enhanced-spatially-resolved-proteomics-using-on-tissue-hydrogel-mediated-protein-digestion
#8
David G Rizzo, Boone M Prentice, Jessica L Moore, Jeremy L Norris, Richard M Caprioli
The identification of proteins from tissue specimens is a challenging area of biological research. Many current techniques for identification forfeit some level of spatial information during the sample preparation process. Recently, hydrogel technologies have been developed that perform spatially localized protein extraction and digestion prior to downstream proteomic analysis. Regiospecific protein identifications acquired using this approach have thus far been limited to 1-2 mm diameter areas. The need to target smaller populations of cells with this technology necessitates the production of smaller diameter hydrogels...
February 17, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28191452/circulating-tumor-cells-in-genitourinary-malignancies-an-evolving-path-to-precision-medicine
#9
REVIEW
Cory M Hugen, Daniel E Zainfeld, Amir Goldkorn
Precision medicine with molecularly directed therapeutics is rapidly expanding in all subspecialties of oncology. Molecular analysis and treatment monitoring require tumor tissue, but resections or biopsies are not always feasible due to tumor location, patient safety, and cost. Circulating tumor cells (CTCs) offer a safe, low-cost, and repeatable tissue source as an alternative to invasive biopsies. "Liquid biopsies" can be collected from a peripheral blood draw and analyzed to isolate, enumerate, and molecularly characterize CTCs...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28191282/the-liquid-biopsy-in-lung-cancer
#10
REVIEW
Junaid Ansari, Jungmi W Yun, Anvesh R Kompelli, Youmna E Moufarrej, Jonathan S Alexander, Guillermo A Herrera, Rodney E Shackelford
The incidence of lung cancer has significantly increased over the last century, largely due to smoking, and remains the most common cause of cancer deaths worldwide. This is often due to lung cancer first presenting at late stages and a lack of curative therapeutic options at these later stages. Delayed diagnoses, inadequate tumor sampling, and lung cancer misdiagnoses are also not uncommon due to the limitations of the tissue biopsy. Our better understanding of the tumor microenvironment and the systemic actions of tumors, combined with the recent advent of the liquid biopsy, may allow molecular diagnostics to be done on circulating tumor markers, particularly circulating tumor DNA...
November 2016: Genes & Cancer
https://www.readbyqxmd.com/read/28188232/closed-tube-pcr-with-nested-serial-invasion-probe-visualization-using-gold-nanoparticles
#11
Jianping Wang, Bingjie Zou, Yinjiao Ma, Xueping Ma, Nan Sheng, Jianzhong Rui, Yang Shao, Guohua Zhou
BACKGROUND: Detecting DNA biomarkers related to personalized medicine could improve the outcome of drug therapy. However, personalized medicine in a resource-restrained hospital is very difficult because DNA biomarker detection should be performed by well-trained staff and requires expensive laboratory facilities. METHODS: We developed a gold nanoparticle-based "Tube-Lab" to enable DNA analysis in a closed tube. Gold nanoparticle-modified probes (GNPs) were used to construct an inexpensive and simple DNA sensor for signal readout...
February 10, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28186965/cell-free-dna-detected-by-liquid-biopsy-as-a-potential-prognostic-biomarker-in-early-breast-cancer
#12
Roberta Maltoni, Valentina Casadio, Sara Ravaioli, Flavia Foca, Maria Maddalena Tumedei, Samanta Salvi, Filippo Martignano, Daniele Calistri, Andrea Rocca, Alessio Schirone, Dino Amadori, Sara Bravaccini
As conventional biomarkers for defining breast cancer (BC) subtypes are not always capable of predicting prognosis, search for new biomarkers which can be easily detected by liquid biopsy is ongoing. It has long been known that cell-free DNA (CF-DNA) could be a promising diagnostic and prognostic marker in different tumor types, although its prognostic value in BC is yet to be confirmed. This retrospective study evaluated the prognostic role of CF-DNA quantity and integrity of HER2, MYC, BCAS1 and PI3KCA, which are frequently altered in BC...
February 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28185905/a-preliminary-study-of-single-operator-cholangioscopy-for-diagnosing-pancreatic-cystic-lesions
#13
Chai Ning-Li, Feng Jia, Guo Yu-Hang, Li Hui-Kai, Ning Bo Wang, Xiangdong Wang, Wang Ying, Wang Yong-Hua, Zhai Ya-Qi, Linghu En-Qiang
BACKGROUND AND AIMS: Advances in imaging technology have improved the annual detection rate of pancreatic cystic lesions, but the preoperative diagnosis of pancreatic cystic lesions remains unclear. Thus, the usefulness of single operator cholangioscopy (SOC) as a diagnostic imaging tool for pancreatic cystic lesions is worth investigating. We performed an intracystic visual examination of pancreatic cystic lesions using SOC to determine the diagnostic value of SOC for pancreatic cystic lesions...
February 6, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28182274/-cancer-moonshot-connecting-international-liquid-biopsy-efforts-through-academic-partnership
#14
C Dive, S N Shishido, P Kuhn
The Kuhn laboratory at the University of Southern California and the Dive laboratory at the Cancer Research UK's Manchester Institute are teaming up to apply new cancer cell detection technology to identify patients that will progress after initial treatment. Researchers will take a simple blood sample to identify early those patients whose cancer has returned, while analyzing CTCs in great detail, providing new clues on the most effective therapy for the patient's cancer. This article is protected by copyright...
February 9, 2017: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28181337/deficiency-of-the-sphingosine-1-phosphate-lyase-sgpl1-is-associated-with-congenital-nephrotic-syndrome-and-congenital-adrenal-calcifications
#15
Andreas R Janecke, Ruijuan Xu, Elisabeth Steichen-Gersdorf, Siegfried Waldegger, Andreas Entenmann, Thomas Giner, Iris Krainer, Lukas A Huber, Michael W Hess, Yaacov Frishberg, Hila Barash, Shay Tzur, Nira Schreyer-Shafir, Rivka Sukenik-Halevy, Tania Zehavi, Annick Raas-Rothschild, Cungui Mao, Thomas Müller
We identified two unrelated consanguineous families with three children affected by the rare association of congenital nephrotic syndrome diagnosed in the first days of life, of hypogonadism, and of prenatally detected adrenal calcifications, associated with congenital adrenal insufficiency in one case. Using exome sequencing and targeted Sanger sequencing two homozygous truncating mutations, c.1513C>T (p.Arg505*) and c.934delC (p.Leu312Phefs*30), were identified in SGPL1 encoding sphingosine-1-phosphate lyase 1...
February 8, 2017: Human Mutation
https://www.readbyqxmd.com/read/28179316/correlation-of-blood-t-cells-to-intratumoural-density-and-location-of-cd3-and-cd8-t-cells-in-colorectal-cancer
#16
Hanne R Hagland, Dordi Lea, Martin M Watson, Kjetil Søreide
AIM: To test the feasibility of conducting parallel analyses of circulating T-cells in blood and intratumoural T-cells in colorectal cancer. A pre-operative 'liquid biopsy' to determine immune status would facilitate clinical decision-making. MATERIALS AND METHODS: A total of 18 patients with stage I-III colorectal cancer (CRC) were included. Blood was analyzed for T-cell type (CD3(+), CD4(+) and CD8(+)) and count using flow cytometry. Intratumoural T-cells were stained using immunohistochemistry and quantified by digital pathology...
2017: Anticancer Research
https://www.readbyqxmd.com/read/28175467/219%C3%A2-liquid-biopsy-can-distinguish-recurrent-glioblastomas-from-pseudoprogression-and-radiation-necrosis-after-concurrent-radiochemotherapy
#17
Andrew E Sloan, David Soler, Anne B Young, Kelvin D Cooper, Thomas McCormic
No abstract text is available yet for this article.
August 1, 2016: Neurosurgery
https://www.readbyqxmd.com/read/28164346/randomised-clinical-trial-the-analgesic-properties-of-dietary-supplementation-with-palmitoylethanolamide-and-polydatin-in-irritable-bowel-syndrome
#18
C Cremon, V Stanghellini, M R Barbaro, R F Cogliandro, L Bellacosa, J Santos, M Vicario, M Pigrau, C Alonso Cotoner, B Lobo, F Azpiroz, S Bruley des Varannes, M Neunlist, D DeFilippis, T Iuvone, S Petrosino, V Di Marzo, G Barbara
BACKGROUND: Intestinal immune activation is involved in irritable bowel syndrome (IBS) pathophysiology. While most dietary approaches in IBS involve food avoidance, there are fewer indications on food supplementation. Palmithoylethanolamide, structurally related to the endocannabinoid anandamide, and polydatin are dietary compounds which act synergistically to reduce mast cell activation. AIM: To assess the effect on mast cell count and the efficacy of palmithoylethanolamide/polydatin in patients with IBS...
February 6, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28159237/altered-plasma-lipidome-profile-of-dairy-cows-with-fatty-liver-disease
#19
C Gerspach, S Imhasly, M Gubler, H Naegeli, M Ruetten, E Laczko
Fatty liver disease is a common health problem of dairy cows occurring during the transition from pregnancy to lactation. It is a direct response to fat mobilization due to negative energy balance. Accumulation of lipids in the liver occurs if the uptake of non-esterified fatty acids by the liver exceeds the capacity of lipid oxidation or secretion by the liver. Currently, the diagnosis of fatty liver disease requires confirmation through biopsies to determine the hepatic lipid content. In view of this lack of a practical diagnostic tool, we compared the plasma lipidome of diseased dairy cows using liquid chromatography coupled to quadrupole time-of-flight mass spectrometry...
February 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28156053/urothelial-cell-expansion-and-differentiation-are-improved-by-exposure-to-hypoxia
#20
Stéphane Chabaud, Ingrid Saba, Clément Baratange, Brice Boiroux, Maude Leclerc, Alexandre Rousseau, Sara Bouhout, Stéphane Bolduc
Cells obtained from a patient's biopsy have to be expanded after extraction to produce autologous tissues, but standard cell culture conditions often limit their growth or lifespan and could induce early and inadequate cell differentiation. Moreover, it has previously been reported that the air-liquid interface, that induces maturation of the urothelium, stimulated inadequate differentiation associated with aberrant keratin-14 expression. The aim of this study was to test the benefits of hypoxia during expansion of urothelial cells and maturation of the bladder epithelium in the context of tissue engineering...
February 3, 2017: Journal of Tissue Engineering and Regenerative Medicine
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