TY - JOUR
T1 - Seasonal variations in the metabolomic profile of the ovarian follicle components in Italian Mediterranean Buffaloes
AU - Kosior, Michal Andrzej
AU - Esposito, Riccardo
AU - Cocchia, Natascia
AU - Piscopo, Federica
AU - Longobardi, Valentina
AU - Cacciola, Nunzio Antonio
AU - Presicce, Giorgio Antonio
AU - Campanile, Giuseppe
AU - Aardema, Hilde
AU - Gasparrini, Bianca
N1 - Publisher Copyright:
© 2023 Elsevier Inc.
PY - 2023/5
Y1 - 2023/5
N2 - The aim of this work was to evaluate the seasonal effect on the metabolomic profile of the ovarian follicle in Italian Mediterranean buffalo to unravel the causes of the reduced competence during the non-breeding season (NBS). Samples of follicular fluid, follicular cells, cumulus cells and oocytes were collected from abattoir-derived ovaries during breeding season (BS) and NBS and analyzed by 1H Nuclear Magnetic Resonance. The Orthogonal Projections to Latent Structures of the Discriminant Analysis showed clear separation into seasonal classes and Variable Importance in Projection method identified differentially abundant metabolites between seasons. Seasonal differences were recorded in metabolite content in all analyzed components suggesting that the decreased oocyte competence during NBS may be linked to alteration of several metabolic pathways. The pathway enrichment analysis revealed that differences in the metabolites between the seasons were linked to glutathione, energy generating and amino acid metabolism and phospholipid biosynthesis. The current work allows the identification of potential positive competence markers in the follicular fluid as glutathione, glutamate, lactate and choline, and negative markers like leucine, isoleucine and β-hydroxybutyrate. These results form a major basis to develop potential strategies to optimize the follicular environment and the IVM medium to improve the competence of oocytes during the NBS.
AB - The aim of this work was to evaluate the seasonal effect on the metabolomic profile of the ovarian follicle in Italian Mediterranean buffalo to unravel the causes of the reduced competence during the non-breeding season (NBS). Samples of follicular fluid, follicular cells, cumulus cells and oocytes were collected from abattoir-derived ovaries during breeding season (BS) and NBS and analyzed by 1H Nuclear Magnetic Resonance. The Orthogonal Projections to Latent Structures of the Discriminant Analysis showed clear separation into seasonal classes and Variable Importance in Projection method identified differentially abundant metabolites between seasons. Seasonal differences were recorded in metabolite content in all analyzed components suggesting that the decreased oocyte competence during NBS may be linked to alteration of several metabolic pathways. The pathway enrichment analysis revealed that differences in the metabolites between the seasons were linked to glutathione, energy generating and amino acid metabolism and phospholipid biosynthesis. The current work allows the identification of potential positive competence markers in the follicular fluid as glutathione, glutamate, lactate and choline, and negative markers like leucine, isoleucine and β-hydroxybutyrate. These results form a major basis to develop potential strategies to optimize the follicular environment and the IVM medium to improve the competence of oocytes during the NBS.
KW - Buffalo
KW - Metabolites
KW - Follicle
KW - Oocyte competence
UR - http://www.scopus.com/inward/record.url?scp=85149992285&partnerID=8YFLogxK
U2 - 10.1016/j.theriogenology.2023.02.022
DO - 10.1016/j.theriogenology.2023.02.022
M3 - Article
C2 - 36898285
SN - 0093-691X
VL - 202
SP - 42
EP - 50
JO - Theriogenology
JF - Theriogenology
ER -