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PLoS One
Title: | Earwax metabolomics: An innovative pilot metabolic profiling study for assessing metabolic changes in ewes during periparturition period |
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Author(s): | Shokry E; Pereira J; Marques Junior JG; da Cunha PHJ; Noronha Filho ADF; da Silva JA; Fioravanti MCS; de Oliveira AE; Antoniosi Filho NR; |
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Address: | "Laboratorio de Metodos de Extracao e Separacao (LAMES), Instituto de Quimica (IQ), Universidade Federal de Goias (UFG), Campus Samambaia, Goiania, Goias, Brazil. Escola de Veterinaria e Zootecnia, Universidade Federal de Goias (UFG), Campus Samambaia, Goiania, Goias, Brazil. Instituto de Quimica (IQ), Universidade Federal de Goias (UFG), Campus Samambaia, Goiania, Goias, Brazil" |
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Journal Title: | PLoS One |
Year: | 2017 |
Volume: | 20170825 |
Issue: | 8 |
Page Number: | e0183538 - |
DOI: | 10.1371/journal.pone.0183538 |
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ISSN/ISBN: | 1932-6203 (Electronic) 1932-6203 (Linking) |
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Abstract: | "Important metabolic changes occur during transition period of late pregnancy and early lactation to meet increasing energy demands of the growing fetus and for milk production. The aim of this investigation is to present an innovative and non-invasive tool using ewe earwax sample analysis to assess the metabolic profile in ewes during late pregnancy and early lactation. In this work, earwax samples were collected from 28 healthy Brazilian Santa Ines ewes divided into 3 sub-groups: 9 non-pregnant ewes, 6 pregnant ewes in the last 30 days of gestation, and 13 lactating ewes = 30 days postpartum. Then, a range of metabolites including volatile organic compounds (VOC), amino acids (AA), and minerals were profiled and quantified in the samples by applying headspace gas chromatography/mass spectrometry, high performance liquid chromatography/tandem mass spectrometry, and inductively coupled plasma-optical emission spectrometry, respectively. As evident in our results, significant changes were observed in the metabolite profile of earwax between the studied groups where a remarkable elevation was detected in the levels of non-esterified fatty acids, alcohols, ketones, and hydroxy urea in the VOC profile of samples obtained from pregnant and lactating ewes. Meanwhile, a significant decrease was detected in the levels of 9 minerals and 14 AA including essential AA (leucine, phenyl alanine, lysine, isoleucine, threonine, valine), conditionally essential AA (arginine, glycine, tyrosine, proline, serine), and a non-essential AA (alanine). Multivariate analysis using robust principal component analysis and hierarchical cluster analysis was successfully applied to discriminate the three study groups using the variations of metabolites in the two stress states (pregnancy and lactation) from the healthy non-stress condition. The innovative developed method was successful in evaluating pre- and post-parturient metabolic changes using earwax and can in the future be applied to recognize markers for diagnosis, prevention, and intervention of pregnancy complications in ewes" |
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Keywords: | Animals Cerumen/*metabolism Female *Metabolomics Multivariate Analysis *Parturition Pregnancy Sheep/*metabolism/physiology Volatile Organic Compounds/metabolism; |
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Notes: | "MedlineShokry, Engy Pereira, Juliao Marques Junior, Jair Gonzalez da Cunha, Paulo Henrique Jorge Noronha Filho, Antonio Dionisio Feitosa da Silva, Jessica Alves Fioravanti, Maria Clorinda Soares de Oliveira, Anselmo Elcana Antoniosi Filho, Nelson Roberto eng 2017/08/26 PLoS One. 2017 Aug 25; 12(8):e0183538. doi: 10.1371/journal.pone.0183538. eCollection 2017" |
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Citation: El-Sayed AM 2024. The Pherobase: Database of Pheromones and Semiochemicals. <http://www.pherobase.com>.
© 2003-2024 The Pherobase - Extensive Database of Pheromones and Semiochemicals. Ashraf M. El-Sayed.
Page created on 26-12-2024
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