Linked Life Data

8464027

Source:http://linkedlifedata.com/resource/pubmed/id/8464027

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1993-5-3
pubmed:abstractText
Blastocysts derived from bovine zygotes fertilized and matured in vitro and cultured for 7 days in conditioned medium were frozen in 1.36 mol glycerol l-1 and 0.25 mol sucrose l-1. In vitro survival after thawing was unaffected by dilution rate in 0.25 mol sucrose l-1. The proportion of blastocysts that re-expanded after 24 h was 81% (70 of 86) and 47% (33 of 70) hatched. Seven pregnancies beyond 2 months resulted from transfer of 21 blastocysts to 19 recipients. Total embryonic loss was 46.2%, of which 31% occurred between days 21 and 35. In vitro survival after thawing was influenced by culture conditions, the best being culture with oviduct epithelial cells, where 55-82% of blastocysts re-expanded, of which 41-54% hatched. Conditioned medium also supported re-expansion, but low hatching (6%), whereas M199 plus fetal calf serum allowed only limited re-expansion (19-40%). This behaviour was not a consequence of freezing. It is suggested that blastocysts produced in vitro have reduced metabolic activity leading to high embryonic loss before or just at the time of implantation and that oviduct cells create a favourable environment after thawing, allowing hatching in vitro.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0022-4251
pubmed:author
pubmed:issnType
Print
pubmed:volume
97
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
65-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Effects of dilution procedure and culture conditions after thawing on survival of frozen bovine blastocysts produced in vitro.
pubmed:affiliation
Unité des Sciences Vétérinaires, Université Catholique de Louvain, Louvain-la-Neuve, Belgium.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't