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Mecarelli E, Aigotti R, Asteggiano A, Giacobini P, Chasles M, Tillet Y, Dal Bello F, Medana C. Quantitation of endogenous GnRH by validated nano-HPLC-HRMS method: a pilot study on ewe plasma. Anal Bioanal Chem 2022; 414:7623-7634. [PMID: 36063171 PMCID: PMC9587114 DOI: 10.1007/s00216-022-04293-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 07/01/2022] [Accepted: 08/17/2022] [Indexed: 11/18/2022]
Abstract
Gonadotropin-releasing hormone isoform I (GnRH), a neuro-deca-peptide, plays a fundamental role in development and maintenance of the reproductive system in vertebrates. The anomalous release of GnRH is observed in reproductive disorder such as hypogonadotropic hypogonadism, polycystic ovary syndrome (PCOS), or following prenatal exposure to elevated androgen levels. Quantitation of GnRH plasma levels could help to diagnose and better understand these pathologies. Here, a validated nano-high-performance liquid chromatography–high-resolution mass spectrometry (HPLC-HRMS) method to quantify GnRH in ewe plasma samples is presented. Protein precipitation and solid-phase extraction (SPE) pre-treatment steps were required to purify and enrich GnRH and internal standard (lamprey-luteinizing hormone-releasing hormone-III, l-LHRH-III). For the validation process, a surrogate matrix approach was chosen following the International Council for Harmonisation (ICH) and FDA guidelines. Before the validation study, the validation model using the surrogate matrix was compared with those using a real matrix such as human plasma. All the tested parameters were analogous confirming the use of the surrogate matrix as a standard calibration medium. From the validation study, limit of detection (LOD) and limit of quantitation (LOQ) values of 0.008 and 0.024 ng/mL were obtained, respectively. Selectivity, accuracy, precision, recovery, and matrix effect were assessed with quality control samples in human plasma and all values were acceptable. Sixteen samples belonging to healthy and prenatal androgen (PNA) exposed ewes were collected and analyzed, and the GnRH levels ranged between 0.05 and 3.26 ng/mL. The nano-HPLC-HRMS developed here was successful in measuring GnRH, representing therefore a suitable technique to quantify GnRH in ewe plasma and to detect it in other matrices and species.
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Affiliation(s)
- Enrica Mecarelli
- Department of Molecular Biotechnology and Health Sciences, University of Turin, via Pietro Giuria 5, 10125, Turin, Italy
| | - Riccardo Aigotti
- Department of Molecular Biotechnology and Health Sciences, University of Turin, via Pietro Giuria 5, 10125, Turin, Italy
| | - Alberto Asteggiano
- Department of Molecular Biotechnology and Health Sciences, University of Turin, via Pietro Giuria 5, 10125, Turin, Italy
| | - Paolo Giacobini
- University Lille, Inserm, CHU Lille, Laboratory of Development and Plasticity of the Neuroendocrine Brain, Lille Neuroscience & Cognition, Inserm UMR-S1172, 59000, Lille, France
| | - Manon Chasles
- University of Tours, IFCE, Centre INRAE Val de Loire, 37380, Nouzilly, France
| | - Yves Tillet
- University of Tours, IFCE, Centre INRAE Val de Loire, 37380, Nouzilly, France
| | - Federica Dal Bello
- Department of Molecular Biotechnology and Health Sciences, University of Turin, via Pietro Giuria 5, 10125, Turin, Italy.
| | - Claudio Medana
- Department of Molecular Biotechnology and Health Sciences, University of Turin, via Pietro Giuria 5, 10125, Turin, Italy
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Chung-Davidson YW, Bussy U, Fissette SD, Huerta B, Li W. Waterborne pheromones modulate gonadotropin-inhibitory hormone levels in sea lamprey (Petromyzon marinus). Gen Comp Endocrinol 2020; 288:113358. [PMID: 31837303 DOI: 10.1016/j.ygcen.2019.113358] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 12/06/2019] [Accepted: 12/07/2019] [Indexed: 12/31/2022]
Abstract
The relationships between pheromone stimuli and neuropeptides are not well established in vertebrates due to the limited number of unequivocally identified pheromone molecules. The sea lamprey (Petromyzon marinus) is an advantageous vertebrate model to study the effects of pheromone exposure on neuropeptides since many pheromone molecules and neuropeptides have been identified in this species. Sexually mature male sea lamprey release pheromones 7α, 12α, 24-trihydroxy-5α-cholan-3-one 24-sulfate (3 keto-petromyzonol sulfate, 3kPZS) and 7α, 12α-dihydroxy-5α-cholan-3-one-24-oic acid (3-keto allocholic acid, 3kACA) that differentially regulate gonadotropin-releasing hormone (lGnRH) and steroid levels in sexually immature sea lamprey. However, the effects of these pheromones on gonadotropin-inhibitory hormones (GnIHs), hypothalamic neuropeptides that regulate lGnRH release, are still elusive. In this report, we sought to examine the effects of waterborne pheromones on lamprey GnIH-related neuropeptide levels in sexually immature sea lamprey. Ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) analyses revealed sex differences in GnIH-related neuropeptide levels in the brain and plasma of immature sea lamprey. Exposure to 3kPZS and 3kACA exerted differential effects on GnIH-related neuropeptide levels in both sexes, but the effects were more prominent in female brains. We conclude that sea lamprey pheromones regulate GnIH-related neuropeptide levels in a sexually dimorphic manner.
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Affiliation(s)
- Yu-Wen Chung-Davidson
- Department of Fisheries and Wildlife, Michigan State University, Natural Resources Building, Rm. 13, 480 Wilson Road, East Lansing, MI 48824, USA.
| | - Ugo Bussy
- Department of Fisheries and Wildlife, Michigan State University, Natural Resources Building, Rm. 13, 480 Wilson Road, East Lansing, MI 48824, USA
| | - Skye Daniel Fissette
- Department of Fisheries and Wildlife, Michigan State University, Natural Resources Building, Rm. 13, 480 Wilson Road, East Lansing, MI 48824, USA.
| | - Belinda Huerta
- Department of Fisheries and Wildlife, Michigan State University, Natural Resources Building, Rm. 13, 480 Wilson Road, East Lansing, MI 48824, USA.
| | - Weiming Li
- Department of Fisheries and Wildlife, Michigan State University, Natural Resources Building, Rm. 13, 480 Wilson Road, East Lansing, MI 48824, USA.
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A validated LC–MS/MS method for thyroid hormone determination in sea lamprey (Petromyzon marinus) plasma, gill, kidney and liver. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1041-1042:77-84. [DOI: 10.1016/j.jchromb.2016.12.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 12/14/2016] [Accepted: 12/17/2016] [Indexed: 12/18/2022]
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Bussy U, Li K, Li W. Application of liquid chromatography-tandem mass spectrometry in quantitative bioanalyses of organic molecules in aquatic environment and organisms. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:9459-79. [PMID: 26996906 DOI: 10.1007/s11356-016-6433-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 03/07/2016] [Indexed: 05/16/2023]
Abstract
Analytical methods using liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) for the simultaneous determination of metabolites or contaminants (or both) in various tissues of aquatic organisms and in the aquatic environment have received increasing attention in the last few years. This review discusses the findings relevant to such procedures published between 2005 and 2015. The aim is to evaluate the advantages, restrictions, and performances of the procedures from sample preparation to mass spectrometry measurement. To support these discussions, a general knowledge on LC-MS/MS is also provided.
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Affiliation(s)
- Ugo Bussy
- Department of Fisheries and Wildlife, Michigan State University, 480 Wilson Road, Room 13, Natural Resources Bldg., East Lansing, MI, 48824, USA
| | - Ke Li
- Department of Fisheries and Wildlife, Michigan State University, 480 Wilson Road, Room 13, Natural Resources Bldg., East Lansing, MI, 48824, USA
| | - Weiming Li
- Department of Fisheries and Wildlife, Michigan State University, 480 Wilson Road, Room 13, Natural Resources Bldg., East Lansing, MI, 48824, USA.
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Chemical derivatization of neurosteroids for their trace determination in sea lamprey by UPLC-MS/MS. Talanta 2016; 149:326-334. [DOI: 10.1016/j.talanta.2015.11.061] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 11/21/2015] [Accepted: 11/23/2015] [Indexed: 11/20/2022]
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