Nanoparticle technology: amplifying the effective sensitivity of biomarker detection to create a urine test for hGH.

abstract：:The synthesis of positional isomers of designer drugs is a common way of bypassing legal restrictions. For forensic case work, and especially for the legal assessment of cases, there is a need for screening methods capable of the unequivocal identification of positional isomers. The presented liquid chromatography-ele...

journal_title：Drug testing and analysis

authors： Grumann C,Auwärter V

更新日期：2018-02-18 00:00:00

abstract：:A novel poly (vinyl chloride) PVC membrane sensor for Fe(2+) ions is described. The sensor is based on the use of newly synthesized chiral 2,6-bis-(carboxamide methyl ester)pyridine derivative as neutral ionophore in plasticized PVC membrane. The sensor display a fast, stable and near-Nernstian response over a relativ...

journal_title：Drug testing and analysis

authors： Abounassif MA,Al-Omar MA,Amr AG,Mostafa GA

更新日期：2011-06-01 00:00:00

abstract：:In this tutorial we describe the construction of chemiluminescence detectors for high performance liquid chromatography (HPLC), comprising the components required to deliver the chemiluminescence reagent, a coiled-tubing flow cell, photomultiplier tube and detector housing, and various options for data acquisition. We...

journal_title：Drug testing and analysis

authors： Adcock JL,Terry JM,Barrow CJ,Barnett NW,Olson DC,Francis PS

更新日期：2011-03-01 00:00:00

abstract：:Synthetic cannabinoids are the psychotropic compounds frequently identified as active components of smoking mixtures easily available via the Internet in several countries. These herbal blends have become extremely popular as a legal alternative to cannabis-based products and are difficult to detect by regular drug te...

journal_title：Drug testing and analysis

authors： Sobolevsky T,Prasolov I,Rodchenkov G

更新日期：2012-10-01 00:00:00

abstract：:The objective of the present work was (1) to develop an in situ gelling ophthalmic delivery system by combining pluronic F127 and pluronic F68, with sparfloxacin; and (2) to examine the influence of incorporating a mucoadhesive polysaccharide such as sodium hyaluronate on the healing property due to bacterial keratiti...

journal_title：Drug testing and analysis

authors： Nesseem DI

更新日期：2011-02-01 00:00:00

abstract：:The detection of an intact ester of testosterone in plasma is leading towards unequivocal proof of the administration of exogenous testosterone. In the current study, a sensitive screening method for the detection of nine testosterone esters in human plasma was developed. By preparing oxime derivatives of intact testo...

journal_title：Drug testing and analysis

authors： Forsdahl G,Vatne HK,Geisendorfer T,Gmeiner G

更新日期：2013-11-01 00:00:00

abstract：:Development of a mass spectrometric method for the unambiguous detection of doping with recombinant human erythropoietins (rhEPO) has been attempted for many years. Unfortunately, progress in this field was hampered by the unavailability of highly purified human endogenous EPOs (urinary[uhEPO], serum/plasma EPO)--a pr...

journal_title：Drug testing and analysis

authors： Reichel C

更新日期：2013-11-01 00:00:00

abstract：:Abuse of gamma-hydroxybutyric acid (GHB) has been known since the early 1990's, but is not as widespread as the consumption of other illegal drugs. However, the number of severe intoxications with fatal outcomes is comparatively high; not the least of which is brought about by the consumption of the currently legal pr...

journal_title：Drug testing and analysis

authors： Andresen H,Aydin BE,Mueller A,Iwersen-Bergmann S

更新日期：2011-09-01 00:00:00

abstract：:To date, substances such as Mildronate (Meldonium) are not on the radar of anti-doping laboratories as the compound is not explicitly classified as prohibited. However, the anti-ischemic drug Mildronate demonstrates an increase in endurance performance of athletes, improved rehabilitation after exercise, protection ag...

journal_title：Drug testing and analysis

authors： Görgens C,Guddat S,Dib J,Geyer H,Schänzer W,Thevis M

更新日期：2015-11-01 00:00:00

abstract：:New Psychoactive Substances are now a feature of Australia's recreational drug market. Little is known, however, about the prevalence of use, the characteristics of people who use them and the relationship between the NPS and ecstasy markets. This study examined the prevalence and correlates of NPS use amongst a group...

journal_title：Drug testing and analysis

authors： Burns L,Roxburgh A,Matthews A,Bruno R,Lenton S,Van Buskirk J

更新日期：2014-07-01 00:00:00

abstract：:Three legal highs; nitracaine (3-(diethylamino)-2,2-dimethylpropyl 4-nitrobenzoate), methoxypiperamide (MEOP, (4-methoxyphenyl)(4-methylpiperazin-1-yl)methanone) and mephtetramine (MTTA, 2-((methylamino)methyl)-3,4-dihydronaphthalen-1(2H)-one) appeared in 2013 as new psychoactive substances (NPS) on Internet websites ...

journal_title：Drug testing and analysis

authors： Power JD,Scott KR,Gardner EA,Curran McAteer BM,O'Brien JE,Brehon M,Talbot B,Kavanagh PV

更新日期：2014-07-01 00:00:00

abstract：:Cobalt is a well-established inducer of hypoxia-like responses, which can cause gene modulation at the hypoxia inducible factor pathway to induce erythropoietin transcription. Cobalt salts are orally active, inexpensive, and easily accessible. It is an attractive blood doping agent for enhancing aerobic performance. I...

journal_title：Drug testing and analysis

authors： Ho EN,Chan GH,Wan TS,Curl P,Riggs CM,Hurley MJ,Sykes D

更新日期：2015-01-01 00:00:00

abstract：:We recently published two protocols for the detection of Sotatercept (ACE-011, ACVR2A-Fc) and Luspatercept (ACE-536, ACVR2B-Fc) in human serum. Both methods used covalently immobilized antibodies on agarose beads for immunoprecipitation and SAR-PAGE/Western blotting for detection. Disadvantages were the relatively hig...

journal_title：Drug testing and analysis

authors： Reichel C,Gmeiner G,Walpurgis K,Thevis M

更新日期：2018-11-01 00:00:00

abstract：:In vitro and in vivo experiments are widely used for studying the metabolism of new psychoactive substances (NPS). The availability of such data is required for toxicological risk assessments and development of urine screening approaches. This study investigated the in vitro metabolism of the 5 pyrrolidinophenone-deri...

journal_title：Drug testing and analysis

authors： Manier SK,Richter LHJ,Schäper J,Maurer HH,Meyer MR

更新日期：2018-01-04 00:00:00

abstract：:Anabolic steroids are banned substances in equine sports. Gas chromatography-mass spectrometry (GC-MS) has been the traditional technique for doping control analysis of anabolic steroids in biological samples. Although liquid chromatography-mass spectrometry (LC/MS) has become an important technique in doping control,...

journal_title：Drug testing and analysis

authors： Wong ASY,Leung GNW,Leung DKK,Wan TSM

更新日期：2017-09-01 00:00:00

abstract：:Dihydroartemisinin (DHA) and piperaquine (PPQ) are two drugs used in an artemisinin-based combination therapy (ACT). The circulation of counterfeit antimalarial drugs demands the development of simple, point-of-care (POC) tests for monitoring drug quality. Here we aimed to design an antibody-based lateral flow dipstic...

journal_title：Drug testing and analysis

authors： Ning X,Tan G,Chen X,Wang M,Wang B,Cui L

更新日期：2019-09-01 00:00:00

abstract：:Phosphatidylethanol 16:0/18:1 (PEth) is the most abundant homologue of the phosphatidylethanol group of phospholipids. Formed only in the presence of ethanol, PEth is used as a biomarker in whole blood to provide information about the consumption of alcohol. As information on the storage life of PEth is essential for ...

journal_title：Drug testing and analysis

authors： Dumitrascu C,van de Lavoir MCA,Neels H,Covaci A,Jacobs W,D'Hondt D,van Nuijs ALN

更新日期：2021-01-04 00:00:00

abstract：:Fast and unequivocal drug detection is of considerable importance in numerous fields of analytical chemistry, and today mass spectrometry-based approaches are often the method of choice due to their sensitive and specific nature. Mass spectrometry is in constant flux with innovations and thus supports the development ...

journal_title：Drug testing and analysis

authors： Thevis M,Volmer DA

更新日期：2012-03-01 00:00:00

abstract：:Urine samples were analyzed for lactose to investigate if elevated lactose concentrations indicate recent (< 48 hours) intravenous abuse of substances containing lactose as an excipient. Elevated lactose levels were found in samples given by patients who had recently injected substances intravenously, verified by fres...

journal_title：Drug testing and analysis

authors： Keltanen TN,Heikman PK,Muhonen LH,Gunnar TO,Ojanperä IA

更新日期：2019-09-01 00:00:00

abstract：:Accurate on-site devices to screen for drug intake are critical for establishing whether an individual is driving under the influence of drugs (DUID); however, on-site oral fluid (OF) cocaine device performance is variable. We evaluated the performance of a newly developed benzoylecgonine (BE) test-strip for the Draeg...

journal_title：Drug testing and analysis

authors： Ellefsen KN,Concheiro M,Pirard S,Gorelick DA,Huestis MA

更新日期：2016-03-01 00:00:00

abstract：:The direct alcohol marker ethyl glucuronide (EtG) is widely used for the assessment of alcohol consumption behavior and abstinence monitoring by hair analysis. We investigated the influence of chlorinated swimming pool water on EtG concentrations in hair in comparison to deionized water (Milli-Q) containing no chlorin...

journal_title：Drug testing and analysis

authors： Luginbühl M,Nussbaumer S,Weinmann W

更新日期：2018-04-01 00:00:00

abstract：:Urinalysis is well established for drug screening. Various methods of urine adulteration such as dilution, addition of oxidative/reductive chemicals or detergents, and handing over urine-like fluids are used to circumvent a positive screen. Validity parameters such as determination of pH, gravidity, urine temperature,...

journal_title：Drug testing and analysis

authors： Kluge J,Rentzsch L,Remane D,Peters FT,Wissenbach DK

更新日期：2018-10-01 00:00:00

abstract：:The effectiveness of doping control in sport has been improved continuously during the past 50 years. One of the major steps forward was the introduction of unannounced and targeted out-of-competition testing in order to control the misuse of anabolic-androgenic steroids (AAS), mainly during the end of the 1980s. It a...

journal_title：Drug testing and analysis

authors： Hemmersbach P

更新日期：2020-05-01 00:00:00

abstract：:Selective androgen receptor modulators (SARMs) have great therapeutic potential in various diseases including cancer cachexia, sarcopenia, and osteoporosis, and the number of drug candidates has been growing over the last decade. The SARM drug candidates S-22 and S-23 belong to one of the most advanced groups of andro...

journal_title：Drug testing and analysis

authors： Thevis M,Gerace E,Thomas A,Beuck S,Geyer H,Schlörer N,Kearbey JD,Dalton JT,Schänzer W

更新日期：2010-11-01 00:00:00

abstract：:The amphetamine molecule contains a chiral center and its enantiomers exhibit differences in pharmacological effects, with the S-enantiomer mediating most of the central nervous system stimulating activity. The majority of prescribed amphetamine consists of the pure S-enantiomer, but therapeutic formulations containin...

journal_title：Drug testing and analysis

authors： Havnen H,Hansen M,Spigset O,Hegstad S

更新日期：2020-09-01 00:00:00

abstract：:The aim of this study was to investigate the effect of Morin on the pharmacokinetics of Piracetam in rats, in vitro enzyme kinetics and metabolic stability (high throughput) studies using human liver microsomes in UPLC. For pharmacokinetics studies, male Wistar rats were pretreated with Morin (10 mg/kg) for one week a...

journal_title：Drug testing and analysis

authors： Sahu K,Shaharyar M,Siddiqui AA

更新日期：2013-07-01 00:00:00

abstract：:A new and sensitive multi-residue method (MRM) with detection by LC-MS/MS was developed and validated for the screening, determination, and confirmation of residues of 7 nitroimidazoles and 3 of their metabolites in turkey muscle tissues at concentrations ≥ 0.05 ng/g. The compounds were extracted into a solvent with a...

journal_title：Drug testing and analysis

authors： Boison JO,Asea PA,Matus JL

更新日期：2012-08-01 00:00:00

abstract：:The second programme of its kind globally, the highly successful, collaborative, productive and energizing IFDAT-International Forum for Drug and Alcohol Testing, was held in Barcelona, Spain, from 12-14 April. IFDAT was attended by over 100 delegates, conference sponsors and exhibitors from the international workplac...

journal_title：Drug testing and analysis

authors： Kenney J D JE,Björklöv P

更新日期：2011-03-01 00:00:00

abstract：:Knowing that polyunsaturated fatty acids can lead to the formation of potentially toxic aldehydes as secondary oxidation products, an analytical method using liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) detection was developed to measure the concentration of eight aldehydes in animal feed: malo...

journal_title：Drug testing and analysis

authors： Douny C,Bayram P,Brose F,Degand G,Scippo ML

更新日期：2016-05-01 00:00:00

abstract：:In 2005 and 2008, studies reported that cannabis in England had become dominated by the sinsemilla (unseeded female) form. The average potency (Δ9 -tetrahydrocannabinol [THC] content) of this material had doubled over the previous decade. Cannabis resin then circulating contained approximately equal ratios of THC and ...

journal_title：Drug testing and analysis

authors： Potter DJ,Hammond K,Tuffnell S,Walker C,Di Forti M

更新日期：2018-04-01 00:00:00