ArticleJournal of comparative physiology. B, Biochemical, systemic, and environmental physiology2004
Fatty acid esterification in the yolk sac membrane of the avian embryo.
Article in Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 25 citations in OpenAlex.
- Changes in fatty acid and mineral profiles of the turkey egg yolk-yolk sac complex during embryonic development.Poultry science · 2026Article
- Avian extraembryonic membranes respond to yolk corticosterone early in development.Biology open · 2024Article
- Maternal lipid profile in pregnancy and embryonic size: a population-based prospective cohort study.BMC pregnancy and childbirth · 2022Article
- Centennial Review: The chicken yolk sac is a multifunctional organ.Poultry science · 2021Review
- Proteomic analysis of fertilized egg yolk proteins during embryonic development.Poultry science · 2020Article
- Quercetin Improving Lipid Metabolism by Regulating Lipid Metabolism Pathway of Ileum Mucosa in Broilers.Oxidative medicine and cellular longevity · 2020Article
- Article
- Temporal transcriptome analysis of the chicken embryo yolk sac.BMC genomics · 2014Article
- Developmental changes in mesenteric artery reactivity in embryonic and newly hatched chicks.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2011Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The transfer of lipid from the yolk to the avian embryo is mediated by the yolk sac membrane (YSM). Some, but not all, of the published morphological evidence supports the view that the lipid undergoes a cycle of hydrolysis and re-esterification during translocation across the YSM. The present study aims to test this view by investigating the capacity of the YSM to perform esterification of free fatty acids to form acyl-lipids. YSM pieces (area vasculosa), obtained from the chicken embryo at day 10 of development, were incubated in vitro in medium containing [14C]-palmitic acid. Radioactivity was rapidly incorporated into the tissue lipid indicating a high capacity for esterification. The incorporation was linear with time during the 1-h incubation. Approximately 84% of the incorporated label was recovered in triacylglycerol, 12% was incorporated into phospholipid and less than 1% was detected in cholesteryl ester. [14C]-palmitic acid was incorporated primarily at the sn-1/3 positions in the triacylglycerol molecule and at the sn-1 position of phospholipid. The incorporation of label into tissue pieces obtained from the non-vascularized peripheral region of the YSM (area vitellina) was much more limited than that observed for the area vasculosa. The results support the hypothesis that yolk lipid is hydrolyzed and re-esterified during transfer across the YSM.
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Registered trials
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