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Critical Reviews in Clinical Laboratory Sciences

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https://www.readbyqxmd.com/read/29226754/cardiac-troponins-25-years-on-the-stage-and-still-improving-their-clinical-value
#1
Aitor Alquézar-Arbé, Alessandro Sionis, Jorge Ordoñez-Llanos
Twenty-five years ago, non-isotopic immunoassays for measuring the cardiac specific isoforms of troponin I (cTnI) and T (cTnT) were developed. Both biomarkers radically changed the diagnosis, prognosis, and therapy indication of acute coronary syndromes (ACS) and, particularly, of myocardial infarction (MI). However, cardiac troponins (cTn) rapidly demonstrated their usefulness in other cardiac and non-cardiac conditions, a part of the ischemic coronary diseases. Consequently, the number of patients to be tested for cTn and the number of tests requested to clinical laboratories sharply increased...
December 11, 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/29226748/epigenetic-biomarkers-current-strategies-and-future-challenges-for-their-use-in-the-clinical-laboratory
#2
José Luis García-Giménez, Marta Seco-Cervera, Trygve O Tollefsbol, Carlos Romá-Mateo, Lorena Peiró-Chova, Pablo Lapunzina, Federico V Pallardó
Epigenetic modifications and regulators represent potential molecular elements which control relevant physiological and pathological features, thereby contributing to the natural history of human disease. These epigenetic modulators can be employed as disease biomarkers, since they show several advantages and provide information about gene function, thus explaining differences among patient endophenotypes. In addition, epigenetic biomarkers can incorporate information regarding the effects of the environment and lifestyle on health and disease, and monitor the effect of applied therapies...
December 11, 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/29214886/clinical-and-molecular-aspects-of-lead-toxicity-an-update
#3
Prasenjit Mitra, Shailja Sharma, Purvi Purohit, Praveen Sharma
Lead toxicity is a major public health issue in developed and developing countries. Both acute and chronic lead exposure has the potential to cause many deleterious systematic effects including hypertension, frank anemia, cognitive deficits, infertility, immune imbalances, delayed skeletal and deciduous dental development, vitamin D deficiency, and gastrointestinal effects. The underlying mechanisms for all these systemic effects have not been elucidated completely. However, the most plausible cause is free radical damage...
December 7, 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/29202618/synovial-fluid-proteomics-in-the-pursuit-of-arthritis-mediators-an-evolving-field-of-novel-biomarker-discovery
#4
Shalini M Mahendran, Katerina Oikonomopoulou, Eleftherios P Diamandis, Vinod Chandran
Synovial fluid (SF) is a protein-rich fluid produced into the joint cavity by cells of the synovial membrane. Due to its direct contact with articular cartilage, surfaces of the bone, and the synoviocytes of the inner membrane, it provides a promising reflection of the biochemical state of the joint under varying physiological and pathophysiological conditions. This property of SF has been exploited within numerous studies in search of unique biomarkers of joint pathologies with the ultimate goal of developing minimally invasive clinical assays to detect and/or monitor disease states...
December 4, 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/29169287/point-of-care-testing-poct-and-evidence-based-laboratory-medicine-eblm-does-it-leverage-any-advantage-in-clinical-decision-making
#5
Christopher Florkowski, Andrew Don-Wauchope, Nuria Gimenez, Karina Rodriguez-Capote, Julien Wils, Annalise Zemlin
Point-of-care testing (POCT) is the analysis of patient specimens outside the clinical laboratory, near or at the site of patient care, usually performed by clinical staff without laboratory training, although it also encompasses patient self-monitoring. It is able to provide a rapid result near the patient and which can be acted upon immediately. The key driver is the concept that clinical decision making may be delayed when samples are sent to the clinical laboratory. Balanced against this are considerations of increased costs for purchase and maintenance of equipment, staff training, connectivity to the laboratory information system (LIS), quality control (QC) and external quality assurance (EQA) procedures, all required for accreditation under ISO 22870...
November 23, 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/29084470/the-vascular-endothelium-a-regulator-of-arterial-tone-and-interface-for-the-immune-system
#6
Rayan Khaddaj Mallat, Cini Mathew John, Dylan J Kendrick, Andrew P Braun
As the primary interface between the blood and various tissues of the body, the vascular endothelium exhibits a diverse range of roles and activities, all of which contribute to the overall health and function of the cardiovascular system. In this focused review, we discuss several key aspects of endothelial function, how this may be compromised and subsequent consequences. Specifically, we examine the dynamic regulation of arterial contractility and distribution of blood flow through the generation of chemical and electrical signaling events that impinge upon vascular smooth muscle...
October 30, 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/29084467/high-resolution-proteomics-and-metabolomics-in-thyroid-cancer-deciphering-novel-biomarkers
#7
Diana Navas-Carrillo, José Manuel Rodriguez, Silvia Montoro-García, Esteban Orenes-Piñero
The incidence of thyroid cancer (TC) - the most common endocrine malignancy - has been increasing sharply since the mid-1990s. The rate of TC incidence in both men and women has been faster than any other cancer. Both improved diagnoses (i.e. increased medical surveillance and more sensitive diagnostic tests, such as ultrasound and confirmation via fine-needle aspiration biopsy (FNAB)), and environmental factors detrimental to thyroid health are thought to account for the increased incidence. There are several histological types of thyroid carcinoma including papillary, follicular, medullary, and anaplastic...
October 30, 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/29025326/onco-proteogenomics-multi-omics-level-data-integration-for-accurate-phenotype-prediction
#8
Lampros Dimitrakopoulos, Ioannis Prassas, Eleftherios P Diamandis, George S Charames
The overall goal of translational oncology is to identify molecular alterations indicative of cancer or of responsiveness to specific therapeutic regimens. While next-generation sequencing has played a pioneering role in this quest, the latest advances in proteomic technologies promise to provide a holistic approach to the further elucidation of tumor biology. Genetic information may be written in DNA and flow from DNA to RNA to protein, according to the central dogma of molecular biology, but the observed phenotype is dictated predominantly by the DNA protein coding region-derived proteotype...
October 12, 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/29017389/the-canadian-laboratory-initiative-on-pediatric-reference-intervals-a-caliper-white-paper
#9
Khosrow Adeli, Victoria Higgins, Karin Trajcevski, Nicole White-Al Habeeb
Laboratory investigations provide physicians with objective data to aid in disease diagnosis, clinical decision making, and patient follow up. Clinical interpretation of laboratory test results relies heavily on the availability of appropriate population-based reference intervals (i.e. normative values) or decision limits developed through clinical outcome studies. Although reference intervals are fundamental to accurate laboratory test interpretation, and thus critically important to healthcare, the need for sound evidence-based reference intervals has been largely overlooked, particularly in the pediatric population...
October 11, 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/28990451/urine-and-oral-fluid-drug-testing-in-support-of-pain-management
#10
Tai C Kwong, Barbarajean Magnani, Christine Moore
In recent years, the abuse of opioid drugs has resulted in greater prevalence of addiction, overdose, and deaths attributable to opioid abuse. The epidemic of opioid abuse has prompted professional and government agencies to issue practice guidelines for prescribing opioids to manage chronic pain. An important tool available to providers is the drug test for use in the initial assessment of patients for possible opioid therapy, subsequent monitoring of compliance, and documentation of suspected aberrant drug behaviors...
September 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/28828885/typing-the-atypical-diagnostic-issues-and-predictive-markers-in-suspicious-prostate-lesions
#11
Francesca Sanguedolce, Antonella Cormio, Giovanni Musci, Francesco Troiano, Giuseppe Carrieri, Pantaleo Bufo, Luigi Cormio
As much as 5% of prostate biopsies yield findings equivocal for malignancy even for skilled uropathologist; such "grey zone" lesions have been addressed in many ways, although the acronym ASAP (atypical small acinar proliferation) is the most widely used when referring to an atypical focus suspicious, but not diagnostic, for malignancy. Since the introduction of this diagnostic category more than 20 years ago, debate has ensued over its histological characterization and clinical significance. Pathology reporting of ASAP, commonly based on strict morphological criteria and traditional immunohistochemical markers such as basal cell antibodies, has been improved by recent availability of novel immunohistochemical markers such as AMACR and ERG...
August 22, 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/28958185/targeting-the-endothelial-glycocalyx-in-acute-critical-illness-as-a-challenge-for-clinical-and-laboratory-medicine
#12
Vladimir Cerny, David Astapenko, Florian Brettner, Jan Benes, Radomir Hyspler, Christian Lehmann, Zdenek Zadak
The purpose of this manuscript is to review the role of endothelial glycocalyx (EG) in the field of critical and perioperative medicine and to discuss possible future directions for investigations in this area. Under physiological conditions, EG has several well-defined functions aimed to prevent the disruption of vessel wall integrity. Under pathological conditions, the EG represent one of the earliest sites of injury during inflammation. EG structure and function distortion contribute to organ dysfunction related to sepsis, trauma, or global ischemia of any origin...
August 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/28956668/biomarkers-of-diabetic-nephropathy-a-2017-update
#13
Nektaria Papadopoulou-Marketou, Christina Kanaka-Gantenbein, Nikolaos Marketos, George P Chrousos, Ioannis Papassotiriou
Diabetic nephropathy (DN), also named diabetic kidney disease (DKD), is a devastating complication in patients with both type 1 and 2 diabetes mellitus (T1D and T2D) and its diagnosis has been traditionally based on the presence of micro-albuminuria (MA). The aim of this article is to update, through review of the relevant medical literature, the most promising biomarkers for early DKD detection. MA has historically been employed as an early marker of microvascular complications, indicating risk for advanced CKD...
August 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/28763247/capillary-blood-for-point-of-care-testing
#14
Ruihua Tang, Hui Yang, Jane Ru Choi, Yan Gong, MinLi You, Ting Wen, Ang Li, XiuJun Li, Bo Xu, Sufeng Zhang, Qibing Mei, Feng Xu
Clinically, blood sample analysis has been widely used for health monitoring. In hospitals, arterial and venous blood are utilized to detect various disease biomarkers. However, collection methods are invasive, painful, may result in injury and contamination, and skilled workers are required, making these methods unsuitable for use in a resource-limited setting. In contrast, capillary blood is easily collected by a minimally invasive procedure and has excellent potential for use in point-of-care (POC) health monitoring...
August 1, 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/28704113/role-of-resveratrol-in-the-management-of-insulin-resistance-and-related-conditions-mechanism-of-action
#15
Ebrahim Abbasi Oshaghi, Mohammad Taghi Goodarzi, Victoria Higgins, Khosrow Adeli
Resveratrol (RES), a well-known antioxidant, is present in numerous plant species and, as a result, is easily obtained through dietary intake of plant-based foods and beverages. Several studies suggest that RES has anti-carcinogenic, anti-microbial, and anti-viral effects. It may also have beneficial metabolic properties that result in mitigation of insulin resistance (IR) and related metabolic abnormalities, including dyslipidemia, hyperglycemia, and hyperinsulinemia through regulation of gene expression or the activity of rate-limiting enzymes...
July 13, 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/28443762/prediction-of-therapy-response-in-ovarian-cancer-where-are-we-now
#16
Khalid El Bairi, Mariam Amrani, Abdul Hafeez Kandhro, Said Afqir
Therapy resistance is a major challenge in the management of ovarian cancer (OC). Advances in detection and new technology validation have led to the emergence of biomarkers that can predict responses to available therapies. It is important to identify predictive biomarkers to select resistant and sensitive patients in order to reduce important toxicities, to reduce costs and to increase survival. The discovery of predictive and prognostic biomarkers for monitoring therapy is a developing field and provides promising perspectives in the era of personalized medicine...
June 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/28393586/evaluation-of-glycated-albumin-ga-and-ga-hba1c-ratio-for-diagnosis-of-diabetes-and-glycemic-control-a-comprehensive-review
#17
Sara Yazdanpanah, Mohammad Rabiee, Mohammadreza Tahriri, Mojgan Abdolrahim, Asadollah Rajab, Hossein E Jazayeri, Lobat Tayebi
Diabetes Mellitus (DM) is a group of metabolic diseases characterized by chronic high blood glucose concentrations (hyperglycemia). When it is left untreated or improperly managed, it can lead to acute complications including diabetic ketoacidosis and non-ketotic hyperosmolar coma. In addition, possible long-term complications include impotence, nerve damage, stroke, chronic kidney failure, cardiovascular disease, foot ulcers, and retinopathy. Historically, universal methods to measure glycemic control for the diagnosis of diabetes included fasting plasma glucose level (FPG), 2-h plasma glucose (2HP), and random plasma glucose...
June 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/28457177/high-sensitivity-cardiac-troponin-assays-from-improved-analytical-performance-to-enhanced-risk-stratification
#18
REVIEW
Marek Kozinski, Magdalena Krintus, Jacek Kubica, Grazyna Sypniewska
Implementation of cardiac troponin (cTn) assays has revolutionized the diagnosis, risk stratification, triage and management of patients with suspected myocardial infarction (MI). The Universal Definition of MI brought about a shift in the diagnostics of MI, from an approach primarily based on electrocardiography (ECG) to one primarily based on biomarkers. Currently, detection of a rise and/or fall in concentration or activity of myocardial necrosis biomarkers, preferentially cTns, with at least one value above the 99th percentile upper reference limit (URL), is the essential component for the diagnosis of MI...
May 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/28393582/insights-into-the-human-brain-proteome-disclosing-the-biological-meaning-of-protein-networks-in-cerebrospinal-fluid
#19
REVIEW
Paulo Bastos, Rita Ferreira, Bruno Manadas, Paula I Moreira, Rui Vitorino
Cerebrospinal fluid (CSF) is an excellent source of biological information regarding the nervous system, once it is in close contact and accurately reflects alterations in this system. Several studies have analyzed differential protein profiles of CSF samples between healthy and diseased human subjects. However, the pathophysiological mechanisms and how CSF proteins relate to diseases are still poorly known. By applying bioinformatics tools, we attempted to provide new insights on the biological and functional meaning of proteomics data envisioning the identification of putative disease biomarkers...
May 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/28393579/clinical-perspectives-of-dried-blood-spot-protein-quantification-using-mass-spectrometry-methods
#20
REVIEW
Sylvain Lehmann, Alexia Picas, Laurent Tiers, Jerome Vialaret, Christophe Hirtz
Although dried blood spot (DBS) sampling methods have been used since the 1960s, they have recently attracted renewed interest because of the development of new clinical applications. In addition to their other advantages, DBS methods can now be used to quantify many blood proteins using the latest highly sensitive and robust, liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) approaches such as multiple reaction monitoring. The DBS blood sampling approach could provide a useful alternative means of conducting blood sampling for routine clinical purposes and patients' follow-up...
May 2017: Critical Reviews in Clinical Laboratory Sciences
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