1
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Gil MC, Park SJ, Lee BS, Park C, Lee BJ. Dual thermal stabilizing effects of xanthan gums via glycosylation and hydrogen bonding and in vivo human bioavailability of desmopressin in orodispersible film. Int J Pharm 2023; 637:122879. [PMID: 36958609 DOI: 10.1016/j.ijpharm.2023.122879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 03/05/2023] [Accepted: 03/18/2023] [Indexed: 03/25/2023]
Abstract
Desmopressin acetate (DDAVP), a nonapeptide drug, is easily destroyed by heat in the manufacturing process of orodispersible film (ODF). A new challenging study was conducted to improve thermal stability through glycosylation and hydrogen bonding using carbohydrate gums (agar, arabic gum, carrageenan, xanthan gum) using the solvent casting method. Among gum types, xanthan gum strongly showed dual stabilizing effects of DDAVP via covalent glycosylation and hydrogen bonding, minimizing total impurities and optimizing physicochemical properties of ODF under accelerated conditions for six months. The optimized ODF formulation (O-DDAVP ODF) at a DDAVP and xanthan gum ratio of 1:1.5 had a pharmaceutically equivalent dissolution profile as compared with a commercial 0.2 mg commercial Minirin® tablet in four different media: pH 1.2, pH 4.0, and pH 6.8 buffers and deionized water. Furthermore, O-DDAVP ODF showed in vivo bioequivalence to Minirin® tablets in healthy human volunteers. Glycosylation-oriented stabilization of peptide drug using pharmaceutically active excipients against thermal denaturation could be challenged to design patient-friendly ODF.
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Affiliation(s)
- Myung-Chul Gil
- College of Pharmacy, Ajou University, Suwon 16499, Republic of Korea; CTCBIO Inc., Hwaseong 18576, Republic of Korea
| | - Su-Jun Park
- College of Pharmacy, Ajou University, Suwon 16499, Republic of Korea; CTCBIO Inc., Hwaseong 18576, Republic of Korea
| | | | - Chulhun Park
- College of Pharmacy, Jeju National University, Jeju-si 63243, Republic of Korea
| | - Beom-Jin Lee
- College of Pharmacy, Ajou University, Suwon 16499, Republic of Korea.
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2
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Kelani KM, Nassar AMW, Omran GA, Morshedy S, Talaat W. Comparative study of extension area based methods for spectrophotometric determination of desmopressin acetate in the presence of its acid-induced degradation products. BMC Chem 2022; 16:117. [PMID: 36529773 PMCID: PMC9759903 DOI: 10.1186/s13065-022-00906-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 11/25/2022] [Indexed: 12/23/2022] Open
Abstract
Desmopressin acetate (DPA) is a synthetic analogue of vasopressin used in the treatment of diabetes insipidus, bedwetting, hemophilia A, and elevated levels of urea in the blood. Sensitive and selective stability-indicating methods are needed to be developed and validated for its assay pure and pharmaceutical dosage forms in the presence of its degradation products as no method has been reported for its determination in the presence of its degradants. This work describes a comparative study of five simple stability-indicating spectrophotometric techniques for determination of DPA in presence of its acid-degradation products (acid-degradants) without prior separation. The proposed spectrophotometric techniques (First derivative, Derivative ratio, Ratio difference, Mean centering and Dual wavelength) were developed and validated according to ICH guidelines. Acid degradation was carried out with 0.1 N HCl; the acid-degradants were separated on TLC plates and the acidic degradation pathway was established by IR, H-NMR and MS techniques. The TLC method was based on the separation of DPA and its acid-induced degradation products on silica gel plates using methanol: water (80:20, v/v) as a developing system and UV detection at 254 nm. All assay suggested methods were successfully applied for quantitation of DPA in pure and tablet forms. They are specific, sensitive, precise and accurate. They showed good linearity in the concentration range of 1-14 µg/mL with good correlation coefficients, and limit of detection (LOD) of 0.304, 0.274, 0.167, 0.248 and 0.199 and limit of quantitation (LOQ) of 0.920, 0.829, 0.506, 0.751 and 0.604) for each method, respectively. These methods were successfully applied for the simultaneous determination of DPA in its pure and tablet dosage form in the presence of its acid-degradants. The results obtained were statistically comparable with those of reported HPLC assay method; no significant differences were observed with relevance to accuracy and precision. All the methods are sensitive, selective and can be used for the routine analysis of DPA in its pure and dosage forms.
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Affiliation(s)
- Khadiga M. Kelani
- grid.7776.10000 0004 0639 9286Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., Cairo, P.O. Box 11562 Egypt
| | - Ahmed M. Wafaa Nassar
- grid.440876.90000 0004 0377 3957Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Modern University for Technology and Information (MTI), Cairo, Egypt
| | - Gamal A. Omran
- grid.449014.c0000 0004 0583 5330Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Damanhour University, Damanhour, Egypt
| | - Samir Morshedy
- grid.449014.c0000 0004 0583 5330Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Damanhour University, Damanhour, Egypt
| | - Wael Talaat
- grid.449014.c0000 0004 0583 5330Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Damanhour University, Damanhour, Egypt
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3
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Interest of HRMS systems in analytical toxicology: Focus on doping products. TOXICOLOGIE ANALYTIQUE ET CLINIQUE 2022. [DOI: 10.1016/j.toxac.2021.10.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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4
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Chang W, He G, Yan K, Wang Z, Zhang Y, Dong T, Liu Y, Zhang L, Hong L. Doping control analysis of small peptides in human urine using LC-HRMS with parallel reaction monitoring mode: screening and confirmation. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:5838-5850. [PMID: 34847571 DOI: 10.1039/d1ay01677f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This study described a reliable analytical method, which combines solid-phase extraction (SPE) with liquid chromatography-high resolution mass spectrometry (LC-HRMS) employing the parallel reaction monitoring (PRM) mode, for screening 41 small peptides and 3 non-peptide growth hormone secretagogues in human urine. Additionally 36 small peptides and 3 non-peptide growth hormone secretagogues were also confirmed in the same way. For the whole screening procedure, the PRM mode was applied to the HRMS detection of small peptides, which reduces the background noise from matrix compounds to a large extent and thus improves the selectivity and reliability of the peptide analytes. Meanwhile, competent chromatographic separation was achieved within a total runtime of 14 minutes, indicating an improvement in the detection efficiency. Moreover, the PRM mode could also be applied to the confirmation procedure due to its strong identification power with a low risk of generating false positives or negatives and good selectivity. Validation was performed according to the relevant World Anti-Doping Agency (WADA) criteria, including selectivity and reliability, limit of detection (LOD), limit of identification (LOI), recovery, extraction stability and carryover. The LODs of the peptide analytes ranged between 0.20 ng mL-1 and 0.92 ng mL-1 in urine, while their LOIs ranged between 0.20 ng mL-1 and 2.00 ng mL-1, which met the corresponding Minimum Required Performance Levels (MRPLs) as defined by WADA. The developed method furnished the rapid and sensitive detection of small peptides in urine for more than 5000 samples with no false-positive or false-negative, indicating that it is an eligible method for doping control analysis.
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Affiliation(s)
- Wei Chang
- National Anti-Doping Laboratory, No. 1 Anding Road, ChaoYang District, 100029 Beijing, People's Republic of China.
| | - Genye He
- National Anti-Doping Laboratory, No. 1 Anding Road, ChaoYang District, 100029 Beijing, People's Republic of China.
| | - Kuan Yan
- National Anti-Doping Laboratory, No. 1 Anding Road, ChaoYang District, 100029 Beijing, People's Republic of China.
| | - Zhanliang Wang
- National Anti-Doping Laboratory, No. 1 Anding Road, ChaoYang District, 100029 Beijing, People's Republic of China.
| | - Yufeng Zhang
- National Anti-Doping Laboratory, No. 1 Anding Road, ChaoYang District, 100029 Beijing, People's Republic of China.
| | - Tianyu Dong
- National Anti-Doping Laboratory, No. 1 Anding Road, ChaoYang District, 100029 Beijing, People's Republic of China.
| | - Yunxi Liu
- National Anti-Doping Laboratory, No. 1 Anding Road, ChaoYang District, 100029 Beijing, People's Republic of China.
| | - Lisi Zhang
- National Anti-Doping Laboratory, No. 1 Anding Road, ChaoYang District, 100029 Beijing, People's Republic of China.
| | - Liu Hong
- School of Mathematics, Sun Yat-sen University, No. 135 Xingang Xi Road, HaiZhu District, 510275 Guangzhou, People's Republic of China.
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5
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Alam MA, Al-Jenoobi FI, Bin Jardan YA, Altamimi MA, Alshehri SM. Novel high throughput green UPLC-MS/MS methods for determination of desmopressin with special sample handling. J INDIAN CHEM SOC 2021. [DOI: 10.1016/j.jics.2021.100211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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6
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Judák P, Esposito S, Coppieters G, Van Eenoo P, Deventer K. Doping control analysis of small peptides: A decade of progress. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1173:122551. [PMID: 33848801 DOI: 10.1016/j.jchromb.2021.122551] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 01/08/2021] [Accepted: 01/10/2021] [Indexed: 02/06/2023]
Abstract
Small peptides are handled in the field of sports drug testing analysis as a separate group doping substances. It is a diverse group, which includes but is not limited to growth hormone releasing-factors and gonadotropin-releasing hormone analogues. Significant progress has been achieved during the past decade in the doping control analysis of these peptides. In this article, achievements in the application of liquid chromatography-mass spectrometry-based methodologies are reviewed. To meet the augmenting demands for analyzing an increasing number of samples for the presence of an increasing number of prohibited small peptides, testing methods have been drastically simplified, whilst their performance level remained constant. High-resolution mass spectrometers have been installed in routine laboratories and became the preferred detection technique. The discovery and implementation of metabolites/catabolites in testing methods led to extended detection windows of some peptides, thus, contributed to more efficient testing in the anti-doping community.
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Affiliation(s)
- Péter Judák
- Department of Diagnostic Sciences, Doping Control Laboratory, Ghent University, Zwijnaarde, Belgium.
| | - Simone Esposito
- ADME/DMPK Department, Drug Discovery Division, IRBM S.p.A, Pomezia, Rome, Italy
| | - Gilles Coppieters
- Department of Diagnostic Sciences, Doping Control Laboratory, Ghent University, Zwijnaarde, Belgium
| | - Peter Van Eenoo
- Department of Diagnostic Sciences, Doping Control Laboratory, Ghent University, Zwijnaarde, Belgium
| | - Koen Deventer
- Department of Diagnostic Sciences, Doping Control Laboratory, Ghent University, Zwijnaarde, Belgium
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7
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A Novel Quantitative Method for Analyzing Desmopressin in Human Plasma Using Liquid Chromatography–Tandem Mass Spectrometry. Ther Drug Monit 2020; 42:880-885. [DOI: 10.1097/ftd.0000000000000791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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8
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Uçaktürk E, Başaran AA, Demirel AH. Effect of the Mobile Phase Compositions on the Confirmation Analysis of Some Prohibited Substances in Sport by LC–ESI–MS/MS. Chromatographia 2020. [DOI: 10.1007/s10337-020-03957-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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9
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Gudlawar SK, Pilli NR, Siddiraju S, Dwivedi J. Highly sensitive assay for the determination of therapeutic peptide desmopressin in human plasma by UPLC-MS/MS. J Pharm Anal 2018; 7:196-202. [PMID: 29404038 PMCID: PMC5790683 DOI: 10.1016/j.jpha.2013.11.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Accepted: 11/23/2013] [Indexed: 11/15/2022] Open
Abstract
An analytical method based on ultra-performance liquid chromatography with positive ion electrospray ionization (ESI) coupled with tandem mass spectrometry detection (UPLC–MS/MS) was developed and validated for the determination of therapeutic peptide desmopressin in human plasma. A desmopressin stable labeled isotope (desmopressin d8) was used as an internal standard. Analyte and the internal standard were extracted from 200 µL of human plasma via solid-phase extraction technique using Oasis WCX cartridges. The chromatographic separation was achieved on an Aquity UPLC HSS T3 column by using a gradient mixture of methanol and 1 mM ammonium formate buffer as the mobile phase. The calibration curve obtained was linear (r2≥0.99) over the concentration range of 1.01–200 pg/mL. Method validation was performed as per FDA guidelines and the results met the acceptance criteria. The results of the intra- and inter-day precision and accuracy studies were well within the acceptable limits. The proposed method was successfully applied to pharmacokinetic studies in humans.
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Affiliation(s)
| | - Nageswara Rao Pilli
- Wellquest Clinical Research Laboratories, Ramanthapur, Hyderabad 500013, India
| | - Sridhar Siddiraju
- Department of Pharmaceutical Chemistry, Malla Reddy College of Pharmacy, Maisammaguda, Secunderabad 5000100, India
| | - Jaya Dwivedi
- Department of Chemistry, Banasthali Vidyapeeth, Jaipur 304022, India
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10
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Determination of doping peptides via solid-phase microelution and accurate-mass quadrupole time-of-flight LC–MS. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1065-1066:134-144. [DOI: 10.1016/j.jchromb.2017.08.044] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 08/03/2017] [Accepted: 08/31/2017] [Indexed: 12/29/2022]
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11
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Primavessy D, Günday Türeli N, Schneider M. Influence of different stabilizers on the encapsulation of desmopressin acetate into PLGA nanoparticles. Eur J Pharm Biopharm 2016; 118:48-55. [PMID: 28011093 DOI: 10.1016/j.ejpb.2016.12.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 11/18/2016] [Accepted: 12/14/2016] [Indexed: 11/19/2022]
Abstract
To address targeting and bioavailability issues of peptidic drugs like desmopressin, the encapsulation into nanoparticles (NP) has become standard in pharmaceutics. This study investigated the encapsulation of desmopressin into PLGA NP by the use of pharmaceutically common stabilizers as a precursor to future, optional targeting and bioavailability experiments. Polymer dry weights were measured by freeze drying and thermo gravimetric analysis (TGA). Particle sizes (ranging between 105 and 130nm, PDI<0.1) and zeta potentials (-35 to -45mV) were analyzed with Dynamic Light Scattering (DLS) and Laser-Doppler-Anemometry (LDA) respectively. Highest loading efficiencies, quantified by RP-HPLC, were achieved with Pluronic F-68 as stabilizer of the inner aqueous phase (1.16±0.07μg desmopressin/mg PLGA) and were significantly higher than coating approaches and approaches without stabilizer (0.74±0.01μg/mg). Optimized nanoformulations are thus in competition with the concentration of commercial non-nanoparticulate desmopressin products. Stability of desmopressin after the process was evaluated by HPLC peak purity analysis (diode array detector) and by mass spectrometry. Desmopressin was shown to remain intact during the whole process; however, despite these very good results the encapsulation efficiency turned out to be a bottle neck and makes the system a challenge for potential applications.
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Affiliation(s)
- Daniel Primavessy
- Department of Pharmacy, Biopharmaceutics and Pharmaceutical Technology, Campus A4 1, Saarland University, D-66123 Saarbrücken, Germany; Department of Pharmaceutics and Biopharmacy, Philipps University Marburg, D-35032 Marburg, Germany
| | - Nazende Günday Türeli
- Department of Pharmacy, Biopharmaceutics and Pharmaceutical Technology, Campus A4 1, Saarland University, D-66123 Saarbrücken, Germany; MJR PharmJet GmbH, Industriestr. 1B, 66802 Überherrn, Germany
| | - Marc Schneider
- Department of Pharmacy, Biopharmaceutics and Pharmaceutical Technology, Campus A4 1, Saarland University, D-66123 Saarbrücken, Germany.
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12
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Tsukazaki Y, Senda N, Kubo K, Yamada S, Kugoh H, Kazuki Y, Oshimura M. Development of a High-Sensitivity Quantitation Method for Arginine Vasopressin by High-Performance Liquid Chromatography Tandem Mass Spectrometry, and Comparison with Quantitative Values by Radioimmunoassay. ANAL SCI 2016; 32:153-9. [PMID: 26860558 DOI: 10.2116/analsci.32.153] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Human plasma arginine vasopressin (AVP) levels serve as a clinically relevant marker of diabetes and related syndromes. We developed a highly sensitive method for measuring human plasma AVP using high-performance liquid chromatography tandem mass spectrometry. AVP was extracted from human plasma using a weak-cation solid-phase extraction plate, and separated on a wide-bore octadecyl reverse-phase column. AVP was quantified in ion-transition experiments utilizing a product ion (m/z 328.3) derived from its parent ion (m/z 542.8). The sensitivity was enhanced using 0.02% dichloromethane as a mobile-phase additive. The lower limit of quantitation was 0.200 pmol/L. The extraction recovery ranged from 70.2 ± 7.2 to 73.3 ± 6.2% (mean ± SD), and the matrix effect ranged from 1.1 - 1.9%. Quality-testing samples revealed interday/intraday accuracy and precision ranging over 0.9 - 3% and -0.3 - 2%, respectively, which included the endogenous baseline. Our results correlated well with radioimmunoassay results using 22 human volunteer plasma samples.
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Thomas A, Görgens C, Guddat S, Thieme D, Dellanna F, Schänzer W, Thevis M. Simplifying and expanding the screening for peptides <2 kDa by direct urine injection, liquid chromatography, and ion mobility mass spectrometry. J Sep Sci 2015; 39:333-41. [DOI: 10.1002/jssc.201501060] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Revised: 10/20/2015] [Accepted: 11/02/2015] [Indexed: 12/12/2022]
Affiliation(s)
- Andreas Thomas
- Institute of Biochemistry/Center for Preventive Doping Research; German Sport University Cologne; Cologne Germany
| | - Christian Görgens
- Institute of Biochemistry/Center for Preventive Doping Research; German Sport University Cologne; Cologne Germany
| | - Sven Guddat
- Institute of Biochemistry/Center for Preventive Doping Research; German Sport University Cologne; Cologne Germany
| | - Detlef Thieme
- Institute of Doping Analysis and Sports Biochemistry (IDAS) Dresden; Germany
| | | | - Wilhelm Schänzer
- Institute of Biochemistry/Center for Preventive Doping Research; German Sport University Cologne; Cologne Germany
| | - Mario Thevis
- Institute of Biochemistry/Center for Preventive Doping Research; German Sport University Cologne; Cologne Germany
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14
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Mazzarino M, Calvaresi V, de la Torre X, Parrotta G, Sebastianelli C, Botrè F. Development and validation of a liquid chromatography–mass spectrometry procedure after solid-phase extraction for detection of 19 doping peptides in human urine. Forensic Toxicol 2015. [DOI: 10.1007/s11419-015-0279-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Bianco G, Battista F, Buchicchio A, Amarena CG, Schmitt-Kopplin P, Guerrieri A. Structural characterization of arginine-vasopressin and lysine-vasopressin by Fourier- transform ion cyclotron resonance mass spectrometry and infrared multiphoton dissociation. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2015; 21:211-219. [PMID: 26307701 DOI: 10.1255/ejms.1339] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Arginine-vasopressin (AVP) and lysine-vasopressin (LVP) were analyzed by reversed-phase liquid chromatography/mass spectrometry (LC-MS) using Fourier-transform ion cyclotron resonance (FT-ICR) mass spectrometry (MS) electrospray ionization (ESI) in the positive ion mode. LVP and AVP exhibited the protonated adduct [M+H](+) as the predominant ion at m/z 1056.43965 and at m/z 1084.44561, respectively. Infrared multiphoton dissociation (IRMPD), using a CO(2) laser source at a wavelength of 10.6 μm, was applied to protonated vasopressin molecules. The IRMPD mass spectra presented abundant mass fragments essential for a complete structural information. Several fragment ions, shared between two target molecules, are discussed in detail. Some previously unpublished fragments were identified unambiguously utilizing the high resolution and accurate mass information provided by the FT-ICR mass spectrometer. The opening of the disulfide loop and the cleavage of the peptide bonds within the ring were observed even under low-energy fragmentation conditions. Coupling the high-performance FT-ICR mass spectrometer with IRMPD as a contemporary fragmentation technique proved to be very promising for the structural characterization of vasopressin.
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Affiliation(s)
- Giuliana Bianco
- Dipartimento di Scienze, Scuola di Ingegneria, Università degli Studi della Basilicata, Via dell'Ateneo Lucano, 10; 85100 Potenza, Italy.
| | - Fabio Battista
- Dipartimento di Scienze, Scuola di Ingegneria, Università degli Studi della Basilicata, Via dell'Ateneo Lucano, 10; 85100 Potenza, Italy.
| | - Alessandro Buchicchio
- Scuola di Ingegneria, Università degli Studi della Basilicata, Via dell'Ateneo Lucano, 10; 85100 Potenza, Italy.
| | - Concetta G Amarena
- Dipartimento di Scienze, Scuola di Ingegneria, Università degli Studi della Basilicata, Via dell'Ateneo Lucano, 10; 85100 Potenza, Italy.
| | - Philippe Schmitt-Kopplin
- German Research Center for Environmental Health, Department of BioGeoChemistry and Analytics, Helmholtz Zentrum Munchen; D-85764 Neuherberg, Germany.
| | - Antonio Guerrieri
- Dipartimento di Scienze, Scuola di Ingegneria, Università degli Studi della Basilicata, Via dell'Ateneo Lucano, 10; 85100 Potenza, Italy.
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16
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Esposito S, Deventer K, Geldof L, Van Eenoo P. In vitromodels for metabolic studies of small peptide hormones in sport drug testing. J Pept Sci 2014; 21:1-9. [DOI: 10.1002/psc.2710] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 10/03/2014] [Accepted: 10/07/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Simone Esposito
- Doping Control Laboratory (DoCoLab), Department of Clinical Chemistry, Microbiology and Immunology; Ghent University (UGent); Technologiepark 30 B 9052 Zwijnaarde Belgium
| | - Koen Deventer
- Doping Control Laboratory (DoCoLab), Department of Clinical Chemistry, Microbiology and Immunology; Ghent University (UGent); Technologiepark 30 B 9052 Zwijnaarde Belgium
| | - Lore Geldof
- Doping Control Laboratory (DoCoLab), Department of Clinical Chemistry, Microbiology and Immunology; Ghent University (UGent); Technologiepark 30 B 9052 Zwijnaarde Belgium
| | - Peter Van Eenoo
- Doping Control Laboratory (DoCoLab), Department of Clinical Chemistry, Microbiology and Immunology; Ghent University (UGent); Technologiepark 30 B 9052 Zwijnaarde Belgium
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17
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Targeting prohibited substances in doping control blood samples by means of chromatographic–mass spectrometric methods. Anal Bioanal Chem 2013; 405:9655-67. [DOI: 10.1007/s00216-013-7224-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 06/26/2013] [Accepted: 07/04/2013] [Indexed: 12/28/2022]
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18
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Thevis M, Kuuranne T, Geyer H, Schänzer W. Annual banned-substance review: analytical approaches in human sports drug testing. Drug Test Anal 2012; 5:1-19. [DOI: 10.1002/dta.1441] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Accepted: 11/02/2012] [Indexed: 12/12/2022]
Affiliation(s)
| | - Tiia Kuuranne
- Doping Control Laboratory, United Medix Laboratories; Höyläämötie 14; 00380; Helsinki; Finland
| | - Hans Geyer
- Center for Preventive Doping Research - Institute of Biochemistry; German Sport University Cologne; Am Sportpark Müngersdorf 6; 50933; Cologne; Germany
| | - Wilhelm Schänzer
- Center for Preventive Doping Research - Institute of Biochemistry; German Sport University Cologne; Am Sportpark Müngersdorf 6; 50933; Cologne; Germany
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19
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Thomas A, Walpurgis K, Krug O, Schänzer W, Thevis M. Determination of prohibited, small peptides in urine for sports drug testing by means of nano-liquid chromatography/benchtop quadrupole orbitrap tandem-mass spectrometry. J Chromatogr A 2012; 1259:251-7. [DOI: 10.1016/j.chroma.2012.07.022] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Revised: 06/04/2012] [Accepted: 07/09/2012] [Indexed: 10/28/2022]
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20
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Esposito S, Deventer K, T'Sjoen G, Vantilborgh A, Van Eenoo P. Doping control analysis of desmopressin in human urine by LC-ESI-MS/MS after urine delipidation. Biomed Chromatogr 2012; 27:240-5. [DOI: 10.1002/bmc.2782] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Revised: 05/21/2012] [Accepted: 05/21/2012] [Indexed: 11/07/2022]
Affiliation(s)
- Simone Esposito
- Doping Control Laboratory, Department of Clinical Chemistry, Microbiology and Immunology; Ghent University; Technologiepark 30; 9052; Zwijnaarde; Belgium
| | - Koen Deventer
- Doping Control Laboratory, Department of Clinical Chemistry, Microbiology and Immunology; Ghent University; Technologiepark 30; 9052; Zwijnaarde; Belgium
| | - Guy T'Sjoen
- Department of Endocrinology-Andrology, Center for Sexology and Gender Problems; University Hospital, Ghent University; De Pintelaan 185; 9000; Gent; Belgium
| | - Anna Vantilborgh
- Department of Hematology; University Hospital, Ghent University; De Pintelaan 186; 9000; Gent
| | - Peter Van Eenoo
- Doping Control Laboratory, Department of Clinical Chemistry, Microbiology and Immunology; Ghent University; Technologiepark 30; 9052; Zwijnaarde; Belgium
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