Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2008-9-3
pubmed:abstractText
The aim of this study was to evaluate the impact of different cryopreservation protocols on the repolymerization of metaphase (M)II spindles in human oocytes. Fresh aspirated donor oocytes were cryopreserved 3-4 h after retrieval using four different protocols: slow freezing using 1.5 mol/l 1,2-propanediol (PROH) + 0.2 mol/l sucrose (n = 36); 1.5 mol/l PROH + 0.3 mol/l sucrose (n = 34); 1.5 mol/l PROH + 0.3 mol/l sucrose with Na(+) depleted-choline replaced media (n = 27), and vitrification by the Cryotip method (n = 23). The control group comprised 34 fresh oocytes. Three hours after thawing, surviving and control oocytes were fixed for meiotic spindle/chromatin assessment. Survival rates were 63.8, 73.5, 74.1 and 86.9% respectively for the four protocols described above. Survival for vitrified oocytes was higher than that observed for slow freezing with 0.2 and 0.3 mol/l sucrose (P < 0.05). The proportion of oocytes showing normal spindle configuration was similar for the four protocols (81, 73.9, 88.9 and 81.3% respectively) and 88.5% for controls, showing that the MII spindle returns to its normal configuration after 3 h of post-thawing incubation under standard conditions, irrespective of the cryopreservation technique used.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1472-6491
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
17
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
350-9
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Effect of different cryopreservation protocols on the metaphase II spindle in human oocytes.
pubmed:affiliation
IVI Universidad de Valencia Plaza de la Policía local, 3 46015 Valencia, Spain.
pubmed:publicationType
Journal Article, Evaluation Studies