keyword
MENU ▼
Read by QxMD icon Read
search

Biomarker

keyword
https://www.readbyqxmd.com/read/28743129/fibroblast-growth-factor-23-predicts-mortality-and-end-stage-renal-disease-in-a-canadian-asian-population-with-chronic-kidney-disease
#1
Ishwarlal Jialal, Fernando Camacho, Bharat Nathoo, Paul Tam, Roma Pahwa, George G Wu
BACKGROUND: Chronic kidney disease (CKD) is a leading cause of morbidity and mortality. Biomarkers that predict end-stage renal disease (ESRD) and/or mortality could usher in new therapeutics to halt this onslaught. While fibroblast growth factor (FGF)23 can predict both ESRD and mortality, it has not been studied in North American CKD patients of Asian ethnicity. METHOD: This is a prospective investigation about the role of FGF23 in 998 Canadian patients of Asian descent with CKD defined by an estimated glomerular filtration rate (eGFR) <60 mL/min/m2 and followed up for 3 years...
July 26, 2017: Nephron
https://www.readbyqxmd.com/read/28743036/recist-response-and-variation-of-circulating-tumour-cells-in-phase-1-trials-a-prospective-multicentric-study
#2
Christophe Massard, Isabelle Borget, Françoise Farace, Sandrine Aspeslagh, Marie-Cécile Le Deley, Christophe Le Tourneau, François-Clement Bidard, Jean-Yves Pierga, Veronique Dieras, Paul Hofman, Jean-Philippe Spano, Charles Ferte, Ludovic Lacroix, Jean-Charles Soria
BACKGROUND: Circulating tumour cell (CTC) counting could be a new biomarker for better evaluation of tumour response to molecules tested in phase I trials. PATIENTS AND METHODS: Consenting patients with advanced metastatic cancer referred to various phase I units were enrolled prospectively in this study. CTCs from 7.5 ml of whole blood drawn at baseline and after starting experimental therapy were counted using the CellSearch system, and tumour response was assessed using RECIST 1...
July 22, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28743008/wastewater-contamination-in-antarctic-melt-water-streams-evidenced-by-virological-and-organic-molecular-markers
#3
L F L Tort, K Iglesias, C Bueno, A Lizasoain, M Salvo, J Cristina, N Kandratavicius, L Pérez, R Figueira, M C Bícego, S Taniguchi, N Venturini, E Brugnoli, R Colina, M Victoria
Human activities in the Antarctica including tourism and scientific research have been raised substantially in the last century with the concomitant impact on the Antarctic ecosystems through the release of wastewater mainly from different scientific stations activities. The aim of this study was to assess the wastewater contamination of surface waters and sediments of three melt-water streams (11 sites) by leaking septic tanks located in the vicinity of the Uruguayan Scientific Station in the Fildes Peninsula, King George Island, Antarctica, during summer 2015...
July 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28742931/dynamics-of-lipids-and-metabolites-during-the-cell-cycle-of-chlamydomonas-reinhardtii
#4
Jessica Jüppner, Umarah Mubeen, Andrea Leisse, Camila Caldana, Henrike Brust, Martin Steup, Marion Herrmann, Dirk Steinhauser, Patrick Giavalisco
Metabolites and lipids are the final products of enzymatic processes, distinguishing the different cellular functions and activities of single cells or whole tissues. Understanding these cellular functions within a well-established model system, requires a systemic collection of molecular and physiological information. In the current report, the green algae Chlamydomonas reinhardtii was selected to establish a comprehensive workflow for the detailed multi-omics analysis of a synchronously growing cell culture system...
July 25, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28742871/comprehensive-immune-profiling-reveals-substantial-immune-system-alterations-in-a-subset-of-patients-with-amyotrophic-lateral-sclerosis
#5
Michael P Gustafson, Nathan P Staff, Svetlana Bornschlegl, Greg W Butler, Mary L Maas, Mohamed Kazamel, Adeel Zubair, Dennis A Gastineau, Anthony J Windebank, Allan B Dietz
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease with a median lifespan of 2-3 years after diagnosis. There are few meaningful treatments that alter progression in this disease. Preclinical and clinical studies have demonstrated that neuroinflammation may play a key role in the progression rate of ALS. Despite this, there are no validated biomarkers of neuroinflammation for use in clinical practice or clinical trials. Biomarkers of neuroinflammation could improve patient management, provide new therapeutic targets, and possibly help stratify clinical trial selection and monitoring...
2017: PloS One
https://www.readbyqxmd.com/read/28742859/whole-blood-microrna-expression-may-not-be-useful-for-screening-non-small-cell-lung-cancer
#6
Santosh K Patnaik, Eric D Kannisto, Reema Mallick, Anil Vachani, Sai Yendamuri
At least seven studies have suggested that microRNA levels in whole blood can be diagnostic for lung cancer. We conducted a large bi-institutional study to validate this. Qiagen® PAXgene™ Blood miRNA System was used to collect blood and extract RNA from it for 85 pathologic stage I-IV non-small cell lung cancer (NSCLC) cases and 76 clinically-relevant controls who had a benign pulmonary mass, or a high risk of developing lung cancer because of a history of cigarette smoking or age >60 years. Cases and controls were similar for age, gender, race, and blood hemoglobin and leukocyte but not platelet levels (0...
2017: PloS One
https://www.readbyqxmd.com/read/28742796/leukocyte-telomere-length-and-renal-cell-carcinoma-survival-in-two-studies
#7
Catherine L Callahan, Kendra Schwartz, Julie J Ruterbusch, Brian Shuch, Barry I Graubard, Qing Lan, Richard Cawthon, Andrea A Baccarelli, Wong-Ho Chow, Nathaniel Rothman, Jonathan N Hofmann, Mark P Purdue
BACKGROUND: Leukocyte telomere length (LTL) is a potential biomarker of cancer prognosis; however, evidence for renal cell carcinoma (RCC) is inconsistent. METHODS: We investigated LTL and RCC-specific survival among 684 cases from the US kidney cancer study (USKC) and 241 cases from the prostate, lung, colorectal, and ovarian cancer screening trial (PLCO). Leukocyte telomere length was measured by quantitative polymerase chain reaction, and hazard ratios (HRs) and 95% confidence intervals (CIs) computed using multivariable Cox models...
July 25, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28742699/understanding-and-resetting-radiation-sensitivity-in-rectal-cancer
#8
Katherine A Kelley, Rebecca A Ruhl, Shushan R Rana, Elizabeth Dewey, Cristina Espinosa, Charles R Thomas, Robert G Martindale, Sudarshan Anand, Vassiliki L Tsikitis
OBJECTIVE: The aim of the study was to explore specific microRNAs (miRs) in rectal cancer that would predict response to radiation and identify target pathways that may be exploited for neoadjuvant therapies. SUMMARY BACKGROUND DATA: Chemoradiotherapy (CRT) response is a predictor of survival in rectal cancer. Studies have demonstrated changes in RNA expression correlate with chemoradiation sensitivity across cancers. METHODS: Forty-five rectal cancer patients, partial responders (PR = 18), nonresponders (NR = 13), and complete responders (CR = 14) to CRT, as defined by a tumor regression score, were examined...
July 24, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28742643/sensitive-troponin-i-and-stress-testing-in-the-emergency-department-for-the-early-management-of-chest-pain-using-2-hour-protocol
#9
Shahriar Dadkhah, Zakaria Almuwaqqat, Samian Sulaiman, Husein Husein, Quang Nguyen, Saad Ali, Tuncay Taskesen
BACKGROUND: Despite improvements in identifying high-risk patients with non-ST segment ACS (acute coronary syndrome), low risk patients presenting with atypical chest pain and non-diagnostic Electrocardiogram (ECG) continued to undergo unnecessary admissions and testing. Since 1992, our chest pain protocol included using 4-hour serial biomarkers from ED admission in combination with stress testing to evaluate these patients. Our study aimed at determining whether a new accelerated diagnostic protocol using sensitive cardiac troponin I (cTnI) 2 hours after admission to the ED followed by stress testing is safe and effective in emergency settings, allowing for appropriate triage, earlier discharge and reducing costs...
September 2017: Critical Pathways in Cardiology
https://www.readbyqxmd.com/read/28742409/the-effects-of-vitamin-d-and-evening-primrose-oil-co-supplementation-on-lipid-profiles-and-biomarkers-of-oxidative-stress-in-vitamin-d-deficient-women-with-polycystic-ovary-syndrome-a-randomized-double-blind-placebo-controlled-trial
#10
Khadijeh Nasri, Sedighe Akrami, Maryam Rahimi, Mohsen Taghizadeh, Masoud Behfar, Mohammad Reza Mazandaranian, Abbas Kheiry, Mohammad Reza Memarzadeh, Zatollah Asemi
PURPOSE OF THE STUDY: There was inconsistent evidence about the benefit of vitamin D plus evening primrose oil (EPO) supplement intake on lipid profiles and reduced oxidative stress among women with polycystic ovary syndrome (PCOS). The current study was performed to evaluate the effects of vitamin D plus EPO supplementation on lipid profiles and biomarkers of oxidative stress in vitamin D-deficient women with PCOS. MATERIALS AND METHODS: This randomized, double-blind, placebo-controlled trial was performed among 60 vitamin D-deficient women with PCOS...
July 25, 2017: Endocrine Research
https://www.readbyqxmd.com/read/28742317/disposable-microfluidic-immunoarray-device-for-sensitive-breast-cancer-biomarker-detection
#11
Ricardo A G de Oliveira, Elsa María Materón, Matias Eliseo Melendez, Andre L Carvalho, Ronaldo C Faria
Breast cancer is the most common cancer in women worldwide. The detection of biomarkers has played a significant role in the early diagnosis and prognosis of breast cancer. Herein, we describe the construction of a disposable microfluidic immunoarray device (DµID) for rapid and low-cost detection of CA15-3 a protein biomarker for breast cancer. The DµID was constructed using a simple and rapid prototyping technique and was applied to detect CA15-3 in cancer patients. The DµID construction was based on a use of double-sided adhesive card with the microfluidic channel and a screen-printed array with 8 electrodes...
July 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28742267/profiling-the-effects-of-short-time-course-cold-ischemia-on-tumor-protein-phosphorylation-using-a-bayesian-approach
#12
You Wu, Jeremy Gaskins, Maiying Kong, Susmita Datta
Phosphorylated proteins provide insight into tumor etiology and are used as diagnostic, prognostic, and therapeutic markers of complex diseases. However, pre-analytic variations, such as freezing delay after biopsy acquisition, often occur in real hospital settings and potentially lead to inaccurate results. The objective of this work is to develop statistical methodology to assess the stability of phosphorylated proteins under short-time cold ischemia. We consider a hierarchical model to determine if phosphorylation abundance of a protein at a particular phosphorylation site remains constant or not during cold ischemia...
July 25, 2017: Biometrics
https://www.readbyqxmd.com/read/28742219/model-free-scoring-system-for-risk-prediction-with-application-to-hepatocellular-carcinoma-study
#13
Weining Shen, Jing Ning, Ying Yuan, Anna S Lok, Ziding Feng
There is an increasing need to construct a risk-prediction scoring system for survival data and identify important risk factors (e.g., biomarkers) for patient screening and treatment recommendation. However, most existing methodologies either rely on strong model assumptions (e.g., proportional hazards) or only handle binary outcomes. In this article, we propose a flexible method that simultaneously selects important risk factors and identifies the optimal linear combination of risk factors by maximizing a pseudo-likelihood function based on the time-dependent area under the receiver operating characteristic curve...
July 25, 2017: Biometrics
https://www.readbyqxmd.com/read/28742209/the-expression-significance-of-serum-mir-21-in-patients-with-osteosarcoma-and-its-relationship-with-chemosensitivity
#14
Y Hua, Z Jin, F Zhou, Y-Q Zhang, Y Zhuang
OBJECTIVE: To investigate the expression level of serum microRNA-21 (miR-21) in 69 patients with osteosarcoma, to analyze the changes in miR-21 expression in the serum and tumor tissues before and after chemotherapy in patients with osteosarcoma, and to investigate the relationship between the expression of serum miR-21 in patients with osteosarcoma and chemosensitivity. PATIENTS AND METHODS: Real-time polymerase chain reaction (RT-PCR) was used to detect the expression level of serum miR-21 in 69 patients with osteosarcoma before and after chemotherapy, and analyze the relationship between the expression of miR-21 with tumor necrosis grading and chemosensitivity...
July 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28742205/up-regulation-of-long-non-coding-rna-pcat-1-correlates-with-tumor-progression-and-poor-prognosis-in-gastric-cancer
#15
W-C Cui, Y-F Wu, H-M Qu
OBJECTIVE: Long non-coding RNAs (lncRNAs), emerging non-coding RNAs, have been proved to serve as a critical role in the proliferation, metastasis apoptosis of gastric cancer. However, the potential biological role PCAT-1 in gastric cancer (GC) remains undefined. The present study aimed to investigate the expression and clinical significance of PCAT-1 in GC. PATIENTS AND METHODS: The expression of PCAT-1 was detected with a quantitative Real-time PCR assay. The association between PCAT-1 expression and clinicopathological factors, as well as survival rates, was analyzed...
July 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28742192/significance-of-interleukin-and-matrix-metalloproteinase-in-patients-with-cognitive-dysfunction-after-single-valve-replacement
#16
H-Y Guo
OBJECTIVE: To investigate the changes in serum neurological function parameters, interleukin (IL) and matrix metalloproteinase (MMP) in patients with cognitive dysfunction after single valve replacement. PATIENTS AND METHODS: 51 cases of senile patients with cognitive dysfunction after general anesthesia were selected as the observation group, and 51 senile patients without cognitive dysfunction after general anesthesia were selected as the control group. Serum neurological function parameters and IL and MMP levels were examined and compared between the two groups...
July 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28742128/construction-and-characterization-of-the-korean-whole-saliva-proteome-to-determine-ethnic-differences-in-human-saliva-proteome
#17
Ha Ra Cho, Han Sol Kim, Jun Seo Park, Seung Cheol Park, Kwang Pyo Kim, Troy D Wood, Yong Seok Choi
As the first step to discover protein disease biomarkers from saliva, global analyses of the saliva proteome have been carried out since the early 2000s, and more than 3,000 proteins have been identified in human saliva. Recently, ethnic differences in the human plasma proteome have been reported, but such corresponding studies on human saliva in this aspect have not been previously reported. Thus, here, in order to determine ethnic differences in the human saliva proteome, a Korean whole saliva (WS) proteome catalogue indexing 480 proteins was built and characterized through nLC-Q-IMS-TOF analyses of WS samples collected from eleven healthy South Korean male adult volunteers for the first time...
2017: PloS One
https://www.readbyqxmd.com/read/28742106/epidemiology-of-enteroaggregative-escherichia-coli-infections-and-associated-outcomes-in-the-mal-ed-birth-cohort
#18
Elizabeth T Rogawski, Richard L Guerrant, Alexandre Havt, Ila F N Lima, Pedro H Q S Medeiros, Jessica C Seidman, Benjamin J J McCormick, Sudhir Babji, Dinesh Hariraju, Ladaporn Bodhidatta, Jasmin Shrestha, Japhat Anania, Athanasia Maro, Amidou Samie, Pablo Peñataro Yori, Shahida Qureshi, Mustafa Mahfuz, Pascal O Bessong, Margaret N Kosek, Tahmeed Ahmed, Zulfiqar A Bhutta, Dennis R Lang, Michael Gottlieb, Eric R Houpt, Aldo A M Lima
BACKGROUND: Enteroaggregative E. coli (EAEC) have been associated with mildly inflammatory diarrhea in outbreaks and in travelers and have been increasingly recognized as enteric pathogens in young children with and without overt diarrhea. We examined the risk factors for EAEC infections and their associations with environmental enteropathy biomarkers and growth outcomes over the first two years of life in eight low-resource settings of the MAL-ED study. METHODS: EAEC infections were detected by PCR gene probes for aatA and aaiC virulence traits in 27,094 non-diarrheal surveillance stools and 7,692 diarrheal stools from 2,092 children in the MAL-ED birth cohort...
July 24, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28741982/multimodal-mr-imaging-signatures-of-cognitive-impairment-in-active-professional-fighters
#19
Virendra R Mishra, Xiaowei Zhuang, Karthik R Sreenivasan, Sarah J Banks, Zhengshi Yang, Charles Bernick, Dietmar Cordes
Purpose To investigate whether combining multiple magnetic resonance (MR) imaging modalities such as T1-weighted and diffusion-weighted MR imaging could reveal imaging biomarkers associated with cognition in active professional fighters. Materials and Methods Active professional fighters (n = 297; 24 women and 273 men) were recruited at one center. Sixty-two fighters (six women and 56 men) returned for a follow-up examination. Only men were included in the main analysis of the study. On the basis of computerized testing, fighters were separated into the cognitively impaired and nonimpaired groups on the basis of computerized testing...
July 25, 2017: Radiology
https://www.readbyqxmd.com/read/28741900/the-avidity-of-tumor-specific-t-cells-amplified-by-a-pdc-based-assay-can-predict-the-clinical-evolution-of-melanoma-patients
#20
Julie Charles, Laurence Chaperot, Bruno Revol, Marine Baudin, Stephane Mouret, Agnes Hamon, Marie-Therese Leccia, Joel Plumas, Caroline Aspord
The advent of immune-checkpoint blockers and targeted therapies has changed the outcome of melanoma. However, many patients experience relapses, emphasizing the need for predictive and prognostic biomarkers. We developed a strategy based on plasmacytoid dendritic cells (pDCs) loaded with melanoma-tumor antigens that allows eliciting highly efficient antitumor T-cell responses. We used it to investigate antitumor T-cell functionality in peripheral blood mononuclear cells and tumor-infiltrating lymphocytes from melanoma patients...
July 25, 2017: Pigment Cell & Melanoma Research
keyword
keyword
565
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"