{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,22]],"date-time":"2026-04-22T17:04:30Z","timestamp":1776877470100,"version":"3.51.2"},"reference-count":52,"publisher":"CSIRO Publishing","issue":"2","license":[{"start":{"date-parts":[[2025,5,27]],"date-time":"2025-05-27T00:00:00Z","timestamp":1748304000000},"content-version":"vor","delay-in-days":2882,"URL":"https:\/\/doi.org\/10.1071\/journalslicense"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2018,1,2]]},"abstract":"<jats:p>Equine cumulus\u2013oocyte complexes (COCs) are classified as compact (cCOC) or expanded (eCOC) and vary in their meiotic competence. This difference could be related to divergent glucose metabolism. To test this hypothesis in the present study, eCOCs, cCOCs and expanded or compact mural granulosa cells (EC and CC respectively) were matured in vitro for 30 h, at which time maturation rate, glucose metabolism and the expression of genes involved in glucose transport, glycolysis, apoptosis and meiotic competence were determined. There were significant differences between eCOCs and cCOCs in maturation rate (50% vs 21.7% (n = 192 and 46) respectively; P &amp;lt; 0.001), as well as mean (\u00b1 s.e.m.) glucose consumption (1.8 \u00b1 0.5 vs 27.9 \u00b1 5.9 nmol per COC respectively) and pyruvate (0.09 \u00b1 0.01 vs 2.4 \u00b1 0.8 nmol per COC respectively) and lactate (4.7 \u00b1 1.3 vs 64.1 \u00b1 20.6 nmol per COC respectively; P &amp;lt; 0.05 for all) production. Glucose consumption in EC and CC did not differ significantly. Expression of hyaluronan-binding protein (tumour necrosis factor alpha induced protein 6; TNFAIP6) was increased in eCOCs and EC, and solute carrier family 2 member 1 (SLC2A1) expression was increased in eCOCs, but there were no differences in the expression of glycolysis-related enzymes and solute carrier family 2 member 3 (SLC2A3) between the COC or mural granulosa cell types. The findings of the present study demonstrate that metabolic and genomic differences exist between eCOCs and cCOCs and mural granulosa cells in the horse.<\/jats:p>","DOI":"10.1071\/rd16441","type":"journal-article","created":{"date-parts":[[2017,7,5]],"date-time":"2017-07-05T20:39:36Z","timestamp":1499287176000},"page":"297-306","source":"Crossref","is-referenced-by-count":15,"title":["Expanded equine cumulus\u2013oocyte complexes exhibit higher meiotic competence and lower glucose consumption than compact cumulus\u2013oocyte complexes"],"prefix":"10.1071","volume":"30","author":[{"given":"L.","family":"Gonz\u00e1lez-Fern\u00e1ndez","sequence":"first","affiliation":[{"name":"ACentro de Estudos de Ci\u00eancia Animal\/Instituto de Ci\u00eancias, Tecnologias e Agroambiente; Instituto de Ci\u00eancias Biom\u00e9dicas Abel Salazar, University of Porto, Campus Agrario de Vair\u00e3o, Rua Padre Armando Quintas, 4485-661 Vair\u00e3o, Portugal."},{"name":"BResearch Group of Intracellular Signalling and Technology of Reproduction (SINTREP), School of Veterinary Medicine, University of Extremadura, Avda. de la universidad s\/n, 10003, C\u00e1ceres, Spain."}]},{"given":"M. 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