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Drews B, Milojevic V, Robles M, Wimel L, Dubois C, Vegas AR, Giller K, Chavatte-Palmer P, Daniel H, Giesbertz P, Bruckmaier R, Ulbrich SE. Moderate differences in plasma leptin in mares have no effect on either the amino acid or the fatty acid composition of the uterine fluid. J Equine Vet Sci 2021; 109:103827. [PMID: 34843890 DOI: 10.1016/j.jevs.2021.103827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 10/18/2021] [Accepted: 11/22/2021] [Indexed: 10/19/2022]
Abstract
Female mammalian reproductive functions are closely linked to body condition and metabolic status. Energy homeostasis is regulated by endocrine hormones such as insulin, IGF-I, leptin and adiponectin via the hypothalamic-pituitary-adrenal axis. These metabolic hormones and their receptors are also expressed in reproductive tissues and the embryo. We investigated the relationship between circulating leptin and the fatty acid (FA) and amino acid (AA) composition of the equine uterine fluid (UF) and peripheral blood plasma (BP) by using a mass spectrometry-based approach. UF and BP were collected from ten broodmares on days 6 and 7 post ovulation, respectively. The mares were retrospectively assigned to two groups according to their BP leptin concentrations (high leptin (> 1.6 ng/ml) versus low leptin (<0.8 ng/ml)). Specific AA and FA compositions for BP and UF were found with different levels of respective metabolite abundances. The main FAs in BP were stearic, palmitic and linoleic acid. In UF, the three most abundant FAs were eicosapentaenoic, arachidonic and stearic acid. The AA profile of BP was dominated by glycine, glutamine, serine and alanine, which were likewise among the highly abundant AAs in UF. In UF, glutamic acid had by far the highest concentration. Therefore, BP leptin concentration within a physiological range do not seem to affect the specific FA nor the AA composition of the UF. The composition of the UF may therefore be mediated by local rather than by peripheral metabolic hormones.
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Affiliation(s)
- Barbara Drews
- ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Zurich, Switzerland.
| | - Vladimir Milojevic
- ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Zurich, Switzerland
| | - Morgane Robles
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France; Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France
| | - L Wimel
- IFCE, Station expérimentale de la Valade, 19370 Chamberet, France.
| | - C Dubois
- IFCE, Station expérimentale de la Valade, 19370 Chamberet, France.
| | - A Rudolf Vegas
- ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Zurich, Switzerland
| | - K Giller
- ETH Zurich, Animal Nutrition, Institute of Agricultural Sciences, Zurich, Switzerland.
| | - P Chavatte-Palmer
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France
| | - H Daniel
- Nutritional Physiology, Technische Universität München, Freising, Germany
| | - P Giesbertz
- Nutritional Physiology, Technische Universität München, Freising, Germany.
| | - Rupert Bruckmaier
- Veterinary Physiology, Department of Clinical Research and Veterinary Public Health, Vetsuisse Faculty Bern, University of Bern, Switzerland.
| | - S E Ulbrich
- ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Zurich, Switzerland.
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Rudolf Vegas A, Podico G, Canisso I, Borel N, Bollwein H, Almiñana C, Bauersachs S. Cell type-specific endometrial transcriptome changes during maternal recognition of pregnancy in the mare. J Equine Vet Sci 2020. [DOI: 10.1016/j.jevs.2020.103066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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