Linked Life Data

10729047

Source:http://linkedlifedata.com/resource/pubmed/id/10729047

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2000-4-4
pubmed:abstractText
Lectins, high molecular weight glycoproteins with different sugar-binding specificity, are able to agglutinate different cell types. The recovery of high-quality spermatozoa can be facilitated by the agglutination induced by the lectin binding. The objective of this study was to combine sperm-lectin agglutination with a dextran/swim-up procedure for developing a new selection technique for ram spermatozoa. To study sperm quality, cell viability (plasma membrane integrity), the HOS-test response and progressive individual motility were assessed. Simultaneously, centrifugal countercurrent distribution (CCCD) in an aqueous two-phase system was carried out to analyze sperm surface heterogeneity. Semen from 3 mature Saltz rams was pooled, and 0.5-mL aliquots were incubated with 4 fluorescein-labelled lectins (ECL, JAC, PSA, RCA). Then, a dextran solution was gently added and overlaid with medium. The top layer of the medium containing the spermatozoa was collected and replaced by careful addition of fresh medium. The incubation sequence was repeated 3 times at 10-min intervals. The consecutive 4 top layers obtained were pooled to give the swim-up combined sample. The highest rate of improvement in sperm quality was obtained after incubation with RCA, with a 50% increase in progressive individual motility, 21.6% in HOS value and 39.5% in viability. Total cell recovery was 64% (1.56x10(9) cells), with a viable cell recovery rate of 86%. The obtained sample showed 82% motility, 80% HOS score and 77% viability, up from the pre-swim-up values of 51, 60 and 57 %, respectively. Comparative CCCD analysis revealed a very high heterogeneous population in the RCA/swim-up sample obtained, while a much more homogeneous population was obtained in the sample after the dextran/swim-up procedure previously developed byus With this simple method, a large proportion of highly-motile spermatozoa with preserved plasma membrane and high heterogeneity can be obtained. These results strongly suggest that this selection procedure could result in a high fertility rate.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0093-691X
pubmed:author
pubmed:issnType
Print
pubmed:volume
51
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
623-36
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Sperm-lectin agglutination combined with swim-up leads to an efficient selection of highly motile, viable and heterogeneous ram spermatozoa.
pubmed:affiliation
Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Veterinaria, Zaragoza, Spain.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't