Metabolomic evolution of the postpartum dairy cow uterus.
Mol Reprod Dev
; 90(12): 835-848, 2023 Dec.
Article
in En
| MEDLINE
| ID: mdl-37632839
ABSTRACT
High rates of early pregnancy loss are a critical issue in dairy herds, particularly in seasonal, grazing systems. Components of the uterine luminal fluid (ULF), on which the early embryo depends for sustenance and growth, partly determine early pregnancy losses. Here, changes in ULF from early to mid-postpartum in crossbred dairy cows were explored, linking them with divergent embryo development. For this, the uteri of 87 cows at Day 7 of pregnancy at first and third estrus postpartum were flushed to collect ULF. Eighteen metabolites (chiefly organic acids and sugars) significantly varied in abundance across postpartum, indicating a molecular signature of physiological recovery consistent of the upregulation of pyrimidine metabolism and glycerophospholipid metabolism, and downregulation of pentose phosphate and taurine metabolism pathways. Joint pathway analysis of metabolomics data and a previously generated proteomics data set on the same ULF samples suggests key links between postpartum recovery and subsequent successful embryo development. These include upregulation of VEGFA and downregulation of metabolism, NRF2, T-cell receptor, which appear to improve the ULF's capacity of sustaining normal embryo development, and a putative osmo-protectant role of beta-alanine. These relationships should be further investigated to develop tools to detect and reduce early pregnancy loss in dairy cows.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Lactation
/
Abortion, Spontaneous
Limits:
Animals
/
Female
/
Humans
/
Pregnancy
Language:
En
Journal:
Mol Reprod Dev
Journal subject:
BIOLOGIA MOLECULAR
/
MEDICINA REPRODUTIVA
Year:
2023
Document type:
Article
Affiliation country: