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Advances in Clinical Chemistry

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https://www.readbyqxmd.com/read/28629593/preface
#1
EDITORIAL
Gregory S Makowski
No abstract text is available yet for this article.
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28629592/measurement-and-clinical-utility-of-%C3%AE-ctx-in-serum-and-plasma
#2
Stephen A P Chubb, Samuel D Vasikaran
Biochemical markers of bone turnover (BTM) are released during bone remodeling and can be measured in blood or urine as noninvasive surrogate markers for the bone remodeling rate. The C-terminal cross-linked telopeptide of type I collagen (βCTX) is released during bone resorption and is specific to bone tissue. Assays have been developed to measure βCTX in blood and in urine; most current use of βCTX measurement for research and in clinical practice is performed on a blood sample. Method-specific differences for serum and plasma βCTX have led to initiatives to standardize or harmonize βCTX commercial assays...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28629591/peptide-antibodies-in-clinical-laboratory-diagnostics
#3
Nicole H Trier, Gunnar Houen
Peptide antibodies, with their high specificities and affinities, are invaluable reagents for peptide and protein recognition in biological specimens. Depending on the application and the assay, in which the peptide antibody is to used, several factors influence successful antibody production, including peptide selection and antibody screening. Peptide antibodies have been used in clinical laboratory diagnostics with great success for decades, primarily because they can be produced to multiple targets, recognizing native wildtype proteins, denatured proteins, and newly generated epitopes...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28629590/bulky-dna-adducts-tobacco-smoking-genetic-susceptibility-and-lung-cancer-risk
#4
Armelle Munnia, Roger W Giese, Simone Polvani, Andrea Galli, Filippo Cellai, Marco E M Peluso
The generation of bulky DNA adducts consists of conjugates formed between large reactive electrophiles and DNA-binding sites. The term "bulky DNA adducts" comes from early experiments that employed a (32)P-DNA postlabeling approach. This technique has long been used to elucidate the association between adducts and carcinogen exposure in tobacco smoke studies and assess the predictive value of adducts in cancer risk. Molecular data showed increased DNA adducts in respiratory tracts of smokers vs nonsmokers. Experimental studies and meta-analysis demonstrated that the relationship between adducts and carcinogens was linear at low doses, but reached steady state at high exposure, possibly due to metabolic and DNA repair pathway saturation and increased apoptosis...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28629589/physical-exercise-and-dna-injury-good-or-evil
#5
Elisa Danese, Giuseppe Lippi, Fabian Sanchis-Gomar, Giorgio Brocco, Manfredi Rizzo, Maciej Banach, Martina Montagnana
Regular, low-intensity physical activity is currently advocated for lowering the risk of developing many acute and especially chronic diseases. However, several lines of evidence attest that strenuous exercise may enhance inflammation and trigger the generation of free radical-mediated damage, thus overwhelming the undisputable benefits of regular, medium-intensity physical activity. Since reactive oxygen species are actively generated during high-intensity exercise, and these reactive compounds are known to impact DNA stability, we review here the current evidence about strenuous exercise and DNA injury...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28629588/human-papillomavirus-and-its-testing-assays-cervical-cancer-screening-and-vaccination
#6
Yusheng Zhu, Yun Wang, Julie Hirschhorn, Kerry J Welsh, Zhen Zhao, Michelle R Davis, Sarah Feldman
Human papillomavirus (HPV) was found to be the causative agent for cervical cancer in the 1980s with almost 100% of cervical cancer cases testing positive for HPV. Since then, many studies have been conducted to elucidate the molecular basis of HPV, the mechanisms of carcinogenesis of the virus, and the risk factors for HPV infection. Traditionally, the Papanicolaou test was the primary screening method for cervical cancer. Because of the discovery and evolving understanding of the role of HPV in cervical dysplasia, HPV testing has been recommended as a new method for cervical cancer screening by major professional organizations including the American Cancer Society, American Society for Colposcopy and Cervical Pathology, and the American Society for Clinical Pathology...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28629587/microparticles-in-chronic-heart-failure
#7
Alexander E Berezin
Heart failure (HF) continues to have a sufficient impact on morbidity, mortality, and disability in developed countries. Growing evidence supports the hypothesis that microparticles (MPs) might contribute to the pathogenesis of the HF development playing a pivotal role in the regulation of the endogenous repair system, thrombosis, coagulation, inflammation, immunity, and metabolic memory phenomenon. Therefore, there is a large body of data clarifying the predictive value of MP numerous in circulation among subjects with HF...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28431644/preface
#8
EDITORIAL
Gregory S Makowski
No abstract text is available yet for this article.
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28431643/advances-in-circulating-tumor-dna-analysis
#9
Samantha Perakis, Martina Auer, Jelena Belic, Ellen Heitzer
The analysis of cell-free circulating tumor DNA (ctDNA) is a very promising tool and might revolutionize cancer care with respect to early detection, identification of minimal residual disease, assessment of treatment response, and monitoring tumor evolution. ctDNA analysis, often referred to as "liquid biopsy" offers what tissue biopsies cannot-a continuous monitoring of tumor-specific changes during the entire course of the disease. Owing to technological improvements, efforts for the establishment of preanalytical and analytical benchmark, and the inclusion of ctDNA analyses in clinical trial, an actual clinical implementation has come within easy reach...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28431642/pcr-based-detection-methods-for-single-nucleotide-polymorphism-or-mutation-real-time-pcr-and-its-substantial-contribution-toward-technological-refinement
#10
Kazuyuki Matsuda
Single-nucleotide polymorphisms (SNPs) and single-nucleotide mutations result from the substitution of only a single base. The SNP or mutation can be relevant to disease susceptibility, pathogenesis of disease, and efficacy of specific drugs. It is important to detect SNPs or mutations clinically. Methods to distinguish/detect SNPs or mutations should be highly specific and sensitive. In this regard, polymerase chain reaction (PCR) has provided the necessary analytical performance for many molecular analyses...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28431641/infections-a-possible-risk-factor-for-type-2-diabetes
#11
Surajit Chakraborty, Rajasri Bhattacharyya, Dibyajyoti Banerjee
Diabetes mellitus is one of the biggest challenges to human health globally, with an estimated 95% of the global diabetic population having type 2 diabetes. Classical causes for type 2 diabetes, such as genetics and obesity, do not account for the high incidence of the disease. Recent data suggest that infections may precipitate insulin resistance via multiple mechanisms, such as the proinflammatory cytokine response, the acute-phase response, and the alteration of the nutrient status. Even pathogen products, such as lipopolysaccharide and peptidoglycans, can be diabetogenic...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28431640/rapid-assessment-of-drugs-of-abuse
#12
Joesph R Wiencek, Jennifer M Colby, James H Nichols
Laboratory testing for drugs of abuse has become standard practice in many settings both forensic and clinical. Urine is the predominant specimen, but other specimens are possible including hair, nails, sweat, and oral fluid. Point-of-care test kits provide for rapid analysis at the site where specimens are collected allowing for immediate action on the results. POCT is based on immunochromatography where the drug in the patient's sample competes with drug and antibody conjugates in the test to develop or block the development of a colored line...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28431639/advances-in-molecular-diagnosis-of-malaria
#13
Zhi Zheng, Zhibin Cheng
Malaria is a mosquito-borne disease caused by five species of Plasmodium parasites. Accurate diagnosis of malaria plays an essential part in malaria control. With traditional diagnostic methodologies, malaria control programs have achieved remarkable success during the past decade, and are now heading toward malaria elimination in many areas. This new situation, however, calls for novel diagnostics with improved sensitivity, throughput, and reduced cost for active screening of malaria parasites, as all transfected individuals have to be identified in order to block transmission...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28431638/triglycerides-revisited-to-the-serial
#14
Paulo Ricardo Nazário Viecili, Brenda da Silva, Gabriela E Hirsch, Fernando G Porto, Mariana M Parisi, Alison R Castanho, Michele Wender, Jonatas Z Klafke
This review discusses the role of triglycerides (TGs) in the normal cardiovascular system as well as in the development and clinical manifestation of cardiovascular diseases. Regulation of TGs at the enzymatic and genetic level, in addition to their possible relevance as preclinical and clinical biomarkers, is discussed, culminating with a description of available and emerging treatments. Due to the high complexity of the subject and the vast amount of material in the literature, the objective of this review was not to exhaust the subject, but rather to compile the information to facilitate and improve the understanding of those interested in this topic...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28212716/preface
#15
EDITORIAL
Gregory S Makowski
No abstract text is available yet for this article.
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28212715/novel-biomarkers-of-heart-failure
#16
REVIEW
A Savic-Radojevic, M Pljesa-Ercegovac, M Matic, D Simic, S Radovanovic, T Simic
Although substantial improvements have been made in majority of cardiac disorders, heart failure (HF) remains a major health problem, with both increasing incidence and prevalence over the past decades. For that reason, the number of potential biomarkers that could contribute to diagnosis and treatment of HF patients is, almost exponentially, increasing over the recent years. The biomarkers that are, at the moment, more or less ready for use in everyday clinical practice, reflect different pathophysiological processes present in HF...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28212714/droplet-based-digital-pcr-application-in-cancer-research
#17
G Perkins, H Lu, F Garlan, V Taly
The efficient characterization of genetic and epigenetic alterations in oncology, virology, or prenatal diagnostics requires highly sensitive and specific high-throughput approaches. Nevertheless, with the use of conventional methods, sensitivity and specificity were largely limited. By partitioning individual target molecules within distinct compartments, digital PCR (dPCR) could overcome these limitations and detect very rare sequences with unprecedented precision and sensitivity. In dPCR, the sample is diluted such that each individual partition will contain no more than one target sequence...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28212713/rationally-designed-peptide-probes-for-extracellular-vesicles
#18
REVIEW
R Tamura, H Yin
Extracellular vesicles (EVs) are submicroscopic lipid vesicles secreted from cells and play significant roles in cell-to-cell communication by transporting varieties of cell signaling molecules like proteins, DNA, mRNA, and microRNA. Recent studies showed that EVs are highly correlated with cancer progression and metastasis. However, there are some difficulties in probing each vesicle using popular analytical methods because of their small sizes and heterogeneous origins. These obstacles may be overcome by using a novel approach that senses highly curved membrane and negatively charged membrane lipids...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28212712/testing-for-chronic-diarrhea
#19
M Raman
Chronic diarrhea is a frequently encountered symptom in clinical practice. The etiologies for chronic diarrhea are diverse and broad with varying clinical implications. A useful method of categorizing chronic diarrhea to guide a diagnostic work-up is a pathophysiology-based framework. Chronic diarrhea may be categorized as malabsorptive, secretory, osmotic, and inflammatory or motility related. Frequently, overlap between categories may exist for any given diarrhea etiology and diagnostic testing must occur with an understanding of the differential diagnosis...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28212711/advances-in-clinical-mass-spectrometry
#20
D French
Although mass spectrometry has been used clinically for decades, the advent of immunoassay technology moved the clinical laboratory to more labor saving automated platforms requiring little if any sample preparation. It became clear, however, that immunoassays lacked sufficient sensitivity and specificity necessary for measurement of certain analytes or for measurement of analytes in specific patient populations. This limitation prompted clinical laboratories to revisit mass spectrometry which could additionally be used to develop assays for which there was no commercial source...
2017: Advances in Clinical Chemistry
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