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Gniazdowska E, Kaza M, Buś-Kwaśnik K, Giebułtowicz J. LC-MS/MS determination of dutasteride and its major metabolites in human plasma. J Pharm Biomed Anal 2021; 206:114362. [PMID: 34562803 DOI: 10.1016/j.jpba.2021.114362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 08/04/2021] [Accepted: 08/19/2021] [Indexed: 11/27/2022]
Abstract
Dutasteride is a specific and selective inhibitor of both 5α-reductase isoforms used mainly in benign prostatic hyperplasia and lower urinary tract symptoms. Although the drug is extensively metabolized in humans, data on the concentrations of its main metabolites are lacking. There is also a lack of data on dutasteride stability in frozen plasma samples. Our method was used to determine dutasteride and its active metabolites: 4'-hydroxydutasteride, 6β-hydroxydutasteride, and 1,2-dihydrodutasteride in plasma after a single administration of 0.5 mg of dutasteride. We also assessed the long-term stability (two years in the freezer) of dutasteride in clinical samples. The developed method covered the range of 0.1-3.5 ng/mL for dutasteride and 0.08-1.2 ng/mL for 1,2-dihydrodutasteride, 4'-hydroxydutasteride, 6β-hydroxydutasteride. It was proved to be reliable as it met all validation criteria required by the European Medicine Agency for bioanalytical methods. 4'-hydroxydutasteride and 1,2-dihydrodutasteride concentrations in plasma were higher than 6β-hydroxydutasteride. Dutasteride was stable in the freezer for up to 2 years in clinical samples. Thus within 1014 days of storage (below - 65 °C), samples can be reanalyzed without the risk of unreliable results.
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Affiliation(s)
- Elżbieta Gniazdowska
- Department of Bioanalysis and Drugs Analysis, Doctoral School, Medical University of Warsaw, 61 Żwirki i Wigury, 02-091 Warsaw, Poland; Łukasiewicz Research Network, Industrial Chemistry Institute, 8 Rydygiera, 01-793 Warsaw, Poland
| | - Michał Kaza
- Łukasiewicz Research Network, Industrial Chemistry Institute, 8 Rydygiera, 01-793 Warsaw, Poland.
| | - Katarzyna Buś-Kwaśnik
- Łukasiewicz Research Network, Industrial Chemistry Institute, 8 Rydygiera, 01-793 Warsaw, Poland
| | - Joanna Giebułtowicz
- Department of Bioanalysis and Drugs Analysis, Faculty of Pharmacy, Medical University of Warsaw, 1 Banacha, 02-097 Warsaw, Poland.
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Mazzarino M, Martellone L, Comunità F, Torre X, Molaioni F, Botrè F. Detection of 5α‐reductase inhibitors by UPLC–MS/MS: Application to the definition of the excretion profile of dutasteride in urine. Drug Test Anal 2019; 11:1737-1746. [DOI: 10.1002/dta.2702] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 09/22/2019] [Accepted: 09/23/2019] [Indexed: 02/01/2023]
Affiliation(s)
- Monica Mazzarino
- Laboratorio AntidopingFederazione Medico Sportiva Italiana Largo Giulio Onesti, 1 00197 Rome Italy
| | - Lorenzo Martellone
- Laboratorio AntidopingFederazione Medico Sportiva Italiana Largo Giulio Onesti, 1 00197 Rome Italy
| | - Fabio Comunità
- Laboratorio AntidopingFederazione Medico Sportiva Italiana Largo Giulio Onesti, 1 00197 Rome Italy
| | - Xavier Torre
- Laboratorio AntidopingFederazione Medico Sportiva Italiana Largo Giulio Onesti, 1 00197 Rome Italy
| | - Francesco Molaioni
- Laboratorio AntidopingFederazione Medico Sportiva Italiana Largo Giulio Onesti, 1 00197 Rome Italy
| | - Francesco Botrè
- Laboratorio AntidopingFederazione Medico Sportiva Italiana Largo Giulio Onesti, 1 00197 Rome Italy
- Dipartimento di Medicina Sperimentale“Sapienza” Università di Roma Viale Regina Elena 324 00161 Rome Italy
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Moreno-Paz M, Gómez-Cifuentes A, Ruiz-Bermejo M, Hofstetter O, Maquieira Á, Manchado JM, Morais S, Sephton MA, Niessner R, Knopp D, Parro V. Detecting Nonvolatile Life- and Nonlife-Derived Organics in a Carbonaceous Chondrite Analogue with a New Multiplex Immunoassay and Its Relevance for Planetary Exploration. ASTROBIOLOGY 2018; 18:1041-1056. [PMID: 29638146 PMCID: PMC6225596 DOI: 10.1089/ast.2017.1747] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 01/18/2018] [Indexed: 05/05/2023]
Abstract
Potential martian molecular targets include those supplied by meteoritic carbonaceous chondrites such as amino acids and polycyclic aromatic hydrocarbons and true biomarkers stemming from any hypothetical martian biota (organic architectures that can be directly related to once living organisms). Heat extraction and pyrolysis-based methods currently used in planetary exploration are highly aggressive and very often modify the target molecules making their identification a cumbersome task. We have developed and validated a mild, nondestructive, multiplex inhibitory microarray immunoassay and demonstrated its implementation in the SOLID (Signs of Life Detector) instrument for simultaneous detection of several nonvolatile life- and nonlife-derived organic molecules relevant in planetary exploration and environmental monitoring. By utilizing a set of highly specific antibodies that recognize D- or L- aromatic amino acids (Phe, Tyr, Trp), benzo[a]pyrene (B[a]P), pentachlorophenol, and sulfone-containing aromatic compounds, respectively, the assay was validated in the SOLID instrument for the analysis of carbon-rich samples used as analogues of the organic material in carbonaceous chondrites or even Mars samples. Most of the antibodies enabled sensitivities at the 1-10 ppb level and some even at the ppt level. The multiplex immunoassay allowed the detection of B[a]P as well as aromatic sulfones in a water/methanol extract of an Early Cretaceous lignite sample (c.a., 140 Ma) representing type IV kerogen. No L- or D-aromatic amino acids were detected, reflecting the advanced diagenetic stage and the fossil nature of the sample. The results demonstrate the ability of the liquid extraction by ultrasonication and the versatility of the multiplex inhibitory immunoassays in the SOLID instrument to discriminate between organic matter derived from life and nonlife processes, an essential step toward life detection outside Earth.
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Affiliation(s)
- Mercedes Moreno-Paz
- Department of Molecular Evolution, Centro de Astrobiología (INTA-CSIC), Madrid, Spain
| | - Ana Gómez-Cifuentes
- Department of Molecular Evolution, Centro de Astrobiología (INTA-CSIC), Madrid, Spain
| | - Marta Ruiz-Bermejo
- Department of Molecular Evolution, Centro de Astrobiología (INTA-CSIC), Madrid, Spain
| | - Oliver Hofstetter
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois
| | - Ángel Maquieira
- Department of Chemistry, Instituto Universitario de Reconocimiento Molecular y Desarrollo Tecnológico, Universidad Politécnica de Valencia, Valencia, Spain
| | - Juan M. Manchado
- Department of Molecular Evolution, Centro de Astrobiología (INTA-CSIC), Madrid, Spain
| | - Sergi Morais
- Department of Chemistry, Instituto Universitario de Reconocimiento Molecular y Desarrollo Tecnológico, Universidad Politécnica de Valencia, Valencia, Spain
| | - Mark A. Sephton
- Department of Earth Science and Engineering, Imperial College London, London, United Kingdom
| | | | - Dietmar Knopp
- Department Chemie, Technische Universität München, Munich, Germany
| | - Victor Parro
- Department of Molecular Evolution, Centro de Astrobiología (INTA-CSIC), Madrid, Spain
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Climent E, Martínez-Máñez R, Maquieira A, Sancenón F, Marcos MD, Brun EM, Soto J, Amorós P. Antibody-capped mesoporous nanoscopic materials: design of a probe for the selective chromo-fluorogenic detection of finasteride. ChemistryOpen 2012; 1:251-9. [PMID: 24551515 PMCID: PMC3922482 DOI: 10.1002/open.201100008] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Indexed: 12/25/2022] Open
Abstract
The synthesis of capped mesoporous silica nanoparticles (MSN) conjugated with an antibody (AB) as a gatekeeper has been carried out in order to obtain a delivery system able to release an entrapped cargo (dye) in the presence of a target molecule (antigen) to which the conjugated antibody binds selectively. In particular, MSN loaded with rhodamine B and functionalized on the external surface with a suitable derivative of N-(t-butyl)-3-oxo-(5α,17β)-4-aza-androst-1-ene-17-carboxamide (finasteride) have been prepared (S1). The addition of polyclonal antibodies against finasteride induced capping of the pores due to the interaction with the anchored hapten-like finasteride derivative to give a MSN–hapten–AB nanoparticle S1-AB. It was found that the addition of capped material S1-AB to water solutions containing finasteride resulted in displacement of the antibody, pore uncapping and entrapped-dye release. The response of the gated material is highly selective, and only finasteride, among other steroids, was able to induce a significant uncapping process. Compared with finasteride, the finasteride metabolite was able to release 17 % of the dye, whereas the exogen steroids testosterone, metenolone and 16-β-hydroxystanozolol only induced very little release of rhodamine B (lower than 10 %) from aqueous suspensions containing sensing solid S1-AB. A detection limit as low as 20 ppb was found for the fluorimetric detection of finasteride. In order to evaluate a possible application of the material for label-free detection of finasteride, the capped material was isolated and stored to give final sensing solid S1-AB-i. It was found to display a similar behavior towards finasteride as to that shown by freshly prepared S1-AB; even after a period of two months, no significant loss of selectivity or sensitivity was noted. Moreover, to study the application for the detection of finasteride in biological samples, this “aged” material, S1-AB-i, was tested using commercially available blank urine as matrix. Samples containing 70 and 90 % blank urine were spiked with a defined amount of finasteride, and the concentration was determined using capped S1-AB-i. Recovery ranges from 94 % to 118 % were reached.
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Affiliation(s)
- Estela Climent
- Centro de Reconocimienro Molecular y Desarrollo Tecnológico (IDM), Unidad mixta Universidad Politécnica de Valencia Universidad de Valencia, Universidad Politécnica de Valencia, Departamento de Química Camino de Vera s/n, 46022 Valencia (Spain) ; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Campus Rio Ebro 50018 Zaragoza (Spain)
| | - Ramón Martínez-Máñez
- Centro de Reconocimienro Molecular y Desarrollo Tecnológico (IDM), Unidad mixta Universidad Politécnica de Valencia Universidad de Valencia, Universidad Politécnica de Valencia, Departamento de Química Camino de Vera s/n, 46022 Valencia (Spain) ; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Campus Rio Ebro 50018 Zaragoza (Spain)
| | - Angel Maquieira
- Centro de Reconocimienro Molecular y Desarrollo Tecnológico (IDM), Unidad mixta Universidad Politécnica de Valencia Universidad de Valencia, Universidad Politécnica de Valencia, Departamento de Química Camino de Vera s/n, 46022 Valencia (Spain)
| | - Félix Sancenón
- Centro de Reconocimienro Molecular y Desarrollo Tecnológico (IDM), Unidad mixta Universidad Politécnica de Valencia Universidad de Valencia, Universidad Politécnica de Valencia, Departamento de Química Camino de Vera s/n, 46022 Valencia (Spain) ; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Campus Rio Ebro 50018 Zaragoza (Spain)
| | - M Dolores Marcos
- Centro de Reconocimienro Molecular y Desarrollo Tecnológico (IDM), Unidad mixta Universidad Politécnica de Valencia Universidad de Valencia, Universidad Politécnica de Valencia, Departamento de Química Camino de Vera s/n, 46022 Valencia (Spain) ; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Campus Rio Ebro 50018 Zaragoza (Spain)
| | - Eva M Brun
- Centro de Reconocimienro Molecular y Desarrollo Tecnológico (IDM), Unidad mixta Universidad Politécnica de Valencia Universidad de Valencia, Universidad Politécnica de Valencia, Departamento de Química Camino de Vera s/n, 46022 Valencia (Spain)
| | - Juan Soto
- Centro de Reconocimienro Molecular y Desarrollo Tecnológico (IDM), Unidad mixta Universidad Politécnica de Valencia Universidad de Valencia, Universidad Politécnica de Valencia, Departamento de Química Camino de Vera s/n, 46022 Valencia (Spain)
| | - Pedro Amorós
- Institut de Ciència dels Materials (ICMUV), Universidad de Valencia P.O. Box 2085, 46071 Valencia (Spain)
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