Abstract:
:Measurement of 25-hydroxyvitamin D (25-OHD) is widely used for assessing vitamin D status. There has been a dramatic increase in 25-OHD requests over recent years prompting many laboratories to consider the use of automated immunoassays. To achieve higher throughput, these methods have abandoned the traditional solvent extraction of samples and are therefore more prone to non-specific interference. The Vitamin D External Quality Assessment Scheme (DEQAS) has revealed method-related differences in 25-OHD results, raising concerns about the comparability and accuracy of different assays. This paper highlights some of the pre-analytical, analytical and post-analytical issues which may influence the accuracy of 25-OHD assays and interpretation of results. Recent attention has focused on reconciling the relatively high results given by liquid chromatography-tandem mass spectrometry (LC-MS/MS) to those of the DiaSorin radioimmunoassay (RIA) on which clinical decision points have previously been based. Data is presented on 20 DEQAS samples which were analysed by an LC-MS/MS assay developed as a candidate reference measurement procedure by the US National Institute of Standards and Technology (NIST). The NIST results were on average 11.2% lower than those given by routine LC-MS/MS methods. If confirmed, these results suggest that most routine LC-MS/MS assays are perhaps overestimating 25-OHD by failing to resolve a molecule having the same mass as 25-OHD(3) and a similar fragmentation pattern. All 25-OHD assays should be monitored by a proficiency testing scheme and the results made available to clinicians and editors of scientific journals.
journal_name
Curr Drug Targetsjournal_title
Current drug targetsauthors
Carter GDdoi
10.2174/138945011793591608subject
Has Abstractpub_date
2011-01-01 00:00:00pages
19-28issue
1eissn
1389-4501issn
1873-5592pii
BSP/CDT/E-Pub/00160journal_volume
12pub_type
杂志文章,评审abstract::The HIV-1 transactivator Tat protein plays a key role in AIDS pathogenesis. Besides the Tat role as activator of HIV-1 transcription, it exerts several important functions on infected and uninfected cells. In fact, HIV-1 Tat is released by infected cells and is taken up by neighboring cells. In this way it regulates e...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/1389450116666150825110658
更新日期:2016-01-01 00:00:00
abstract::Dysbiosis has been repeatedly observed in inflammatory bowel disease (IBD) and is now recognized as an essential factor in the gut inflammatory process. IBD is a significant burden to health-care systems, mainly due to treatment-related costs. Available treatments have several limitations: up to 30% of patients are pr...
journal_title:Current drug targets
pub_type: 杂志文章
doi:10.2174/1389450121666200602125507
更新日期:2020-01-01 00:00:00
abstract::Target discovery using the molecular approach, as opposed to the more traditional systems approach requires the study of the cellular or biological process underlying a condition or disease. The approaches that are employed by the "bench" scientist may be genetic, genomic or proteomic and each has its rightful place i...
journal_title:Current drug targets
pub_type: 杂志文章
doi:10.2174/1389450115666141120110323
更新日期:2015-01-01 00:00:00
abstract::Due to potential health benefits and the general assumption that natural products are safe, there is an increasing trend in the general population - including pregnant women - to supplement their diet with flavonoid-based food supplements. In addition, preclinical studies aim to prevent developmental adverse effects i...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/1389450116666150804110049
更新日期:2017-01-01 00:00:00
abstract::Pancreatic cancer is predicted to be the second deadliest malignancy (a median survival of 4-6 months and a 5-year survival of less than 5%) in the USA by 2020. Although current medical detection technologies have dramatically improved the survival rate for patients with other gastrointestinal malignancies, the dismal...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/1389450117666160622220915
更新日期:2018-01-01 00:00:00
abstract::Medicinal plants and mushrooms have alwaysfascinated the world as an attractive source of natural compounds for cancer therapy. From ancient times, they have been valued as gourmet food and folk medicine in Oriental practice. For over 40 years, world has witnessed the overwhelming interest of western scientific frater...
journal_title:Current drug targets
pub_type: 杂志文章
doi:10.2174/1389450121999201230204526
更新日期:2020-12-30 00:00:00
abstract::Treatment of chronic myeloid leukemia (CML) with interferon-alpha (IFN-α) was introduced in the early 1980s. Several clinical trials showed a survival advantage for patients treated with IFN-α compared to conventional chemotherapy. Some patients achieved longstanding complete cytogenetic remissions (i.e. >2 log tumor ...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/138945011794815301
更新日期:2011-03-01 00:00:00
abstract::Terpenoids represent a large and diverse class of naturally occurring compounds found in a variety of fruits, vegetables and medicinal plants. Structurally some of the terpenoids are similar to human hormones. A diet rich in terpenoids is inversely related with the risk of chronic diseases including cancers. Breast an...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/138945010791170842
更新日期:2010-06-01 00:00:00
abstract::FOXO transcription factors control proliferation, apoptosis, differentiation and metabolic processes. Loss of FOXO function has been identified in several human cancers, and results in increased cellular survival and a predisposition to neoplasia, especially in epithelial cancer. FOXO factors are therefore bona fide t...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/138945011796150307
更新日期:2011-08-01 00:00:00
abstract::The incidence of inflammatory bowel disease (IBD; Crohn's disease, ulcerative colitis) is highest during the peak reproductive years, hence the increased concern with the safety of IBD drugs during pregnancy. Over the past 11 years, anti-TNF-alpha antibody therapy has emerged as a treatment approach for refractory IBD...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/138945010790309885
更新日期:2010-02-01 00:00:00
abstract::Hepatic diseases are turning into one of the few diseases that cannot be effectively cured due to some reasons although various receptors existed in the liver. Currently, several passive targeting delivery systems have been used in the drug/gene delivery for the treatment of hepatic diseases. For example, Zinostatin s...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/1389450115666140309232100
更新日期:2014-06-01 00:00:00
abstract::Thromboembolic diseases such as deep vein thrombosis (DVT), pulmonary embolism (PE), myocardial infarction (MI) and ischemic strokes are mainly responsible for people's morbidity and mortality and have severely affected the people's quality of life all over the world. According to WHO statistics, an average of 17 mill...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/1389450116666150518095533
更新日期:2015-01-01 00:00:00
abstract::Despite the success of combined antiretroviral therapy, more than half of HIV-1-infected patients in the USA show HIV-associated neurological and neuropsychiatric deficits. This is accompanied by anatomical and functional alterations in vulnerable brain regions of the mesocorticolimbic and nigrostriatal systems that r...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/1389450116666150531162212
更新日期:2016-01-01 00:00:00
abstract::The emergency of responsive drug delivery systems has contributed to the reduced cytotoxicity, the improved permeability in tissues and extended circulation time of the active drug. Of particular, enzyme-responsive nanoplatforms have attracted a lot due to the specificity and efficiency of an enzyme-catalyzed reaction...
journal_title:Current drug targets
pub_type: 杂志文章
doi:10.2174/1389450122666210114095614
更新日期:2021-01-13 00:00:00
abstract::There exists an immediate need to develop novel medications for the treatment of mood disorders such as bipolar disorder and depression. Initial interest in glycogen synthase kinase-3 (GSK-3) as a target for the treatment of mood disorders arose from the finding that the mood stabilizing drug lithium directly inhibite...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/1389450110607011399
更新日期:2006-11-01 00:00:00
abstract::Diabetes is reaching epidemic proportions worldwide. Many dietary compounds have been found to exert health beneficial effects against different pathologies including diabetes. Most bioactive compounds have been identified in fruits and vegetables and their mechanisms of action explored both in vitro and in vivo. In p...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/1389450116666151001105230
更新日期:2017-01-01 00:00:00
abstract::Aldose reductase (AR) enzymatically transforms cytosolic glucose into sorbitol, a molecule that poorly penetrates cell membranes and is sometimes slowly metabolized. Hyperglycemia can cause intracellular accumulation of sorbitol and its metabolite, fructose, which can create osmotic swelling and cell dysfunction. Driv...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/138945008783431781
更新日期:2008-01-01 00:00:00
abstract::Medical chronobiology deals with the way body's rhythm influences a person's health and disease states. To match body rhythms, deliberate alteration of drug concentration is done to optimize therapeutic outcomes and minimize size effects and this approach is known as Chronotherapeutics. In general the concept of homeo...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/1389450120666190527114529
更新日期:2019-01-01 00:00:00
abstract::The recent marketing of two selective cyclooxygenase-2 (COX-2) inhibitors, celecoxib and rofecoxib is remarkable considering that COX-2 was only discovered eight years ago as a growth factor- and cytokine-inducible gene. Concomitant with these pharmaceutical successes is the advances in our understanding of the molecu...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/1389450013348830
更新日期:2001-03-01 00:00:00
abstract:BACKGROUND:Nanotechnology deals with the manufacturing of materials at the atomic and molecular scale. According to the National Nanotechnology Initiative, nanotechnology denotes those structures which are nearly in 1-100 nm size regime in at least one dimension. OBJECTIVE:Nanotechnology in drug delivery has been evid...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/1389450119666180131105822
更新日期:2018-01-01 00:00:00
abstract::An understanding of the historical paths that have lead to our current state of knowledge in the field of platelet studies can be both illuminating and inspiring. Considering that the existence and function of platelets were initially described just barely over 100 years ago it is exciting to recognize how far our kno...
journal_title:Current drug targets
pub_type: 历史文章,杂志文章
doi:10.2174/138945011797635858
更新日期:2011-11-01 00:00:00
abstract::Cell proliferation, differentiation, and survival are regulated by a number of extracellular hormones, growth factors, and cytokines in complex organisms. The transduction of the signals by these factors from the outside to the nucleus often requires the presence of small intracellular proteins (i.e. ras and other sma...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/1389450053765833
更新日期:2005-05-01 00:00:00
abstract::The liver is essential for the control of glucose and lipid metabolism. Excessive accumulation of fat in the liver disturbs its function and leads to the development of fatty liver diseases. The nonalcoholic fatty liver disease (NAFLD) is a common type of fatty liver disease found in patients who have not consumed sig...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/1389450116666150325231015
更新日期:2015-01-01 00:00:00
abstract::Oxysterols are pleiotropic messengers interacting with multiple receptor systems. One of the cognate receptors for oxysterols is EBI2, a G protein-coupled receptor highly expressed in the cells of the immune system. Here we discuss the receptor's role in the adapted immunity and inflammation as well as the receptor's ...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/1389450117666160217123042
更新日期:2016-01-01 00:00:00
abstract::Prostaglandins serve as the connecting link between inflammation and cancer. mPGES1, the downstream enzyme in the prostaglandin pathway is considered a better target than COX-2 against the progression of cancer due to the cardiovascular and other complications associated with the inhibition of the latter. Despite the ...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/1389450117666160826093137
更新日期:2017-01-01 00:00:00
abstract::The present article aims to review the literature on the relationship between psychology and inflammatory bowel disease (IBD). In particular, the first section is dedicated to explore the role of psychological factors in the etiopathology of the disease, its development and the efficacy of treatments, while the second...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/1389450115666140627151702
更新日期:2014-01-01 00:00:00
abstract::Antimicrobial resistance of human pathogenic bacteria is an emerging problem for global public health. This resistance is often associated with the overproduction of membrane transport proteins that are capable to pump chemotherapeutics, antibiotics, detergents, dyes and organic solvents out of the cell. In Gram-negat...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/138945008785747789
更新日期:2008-09-01 00:00:00
abstract::Memories associated with substance use disorders, or substance-associated cues increase the likelihood of craving and relapse during abstinence. There is a growing consensus that manipulation of synaptic plasticity may reduce the strength of substance abuse-related memories. On the biological front, there are new insi...
journal_title:Current drug targets
pub_type: 杂志文章,评审
doi:10.2174/1389450118666170622092824
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND:Endometriosis (EMS) is a gynecological disease defined by the translocation and growth of endometrial tissue in other tissues or organs outside the uterus. Its clinical manifestations are dysmenorrhea, irregular menstruation, and even infertility. Although EMS is a benign disease, it has the characteristics ...
journal_title:Current drug targets
pub_type: 杂志文章
doi:10.2174/1389450121666200228112344
更新日期:2020-01-01 00:00:00
abstract::Patients with heart failure undergoing non-cardiac surgery still have an unacceptably high morbidity and mortality. Compromised myocardial physiologic reserves in combination with extensive surgery and anesthesia appear to play a crucial role in determining high perioperative morbidity and mortality. Nevertheless, sev...
journal_title:Current drug targets
pub_type: 杂志文章
doi:10.2174/138945009789108819
更新日期:2009-09-01 00:00:00