Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1999-7-14
pubmed:abstractText
Fertilization and pregnancy outcomes of 50 round spermatid injection (ROSI) and 20 elongated spermatid injection (ELSI) treatment cycles are related to various characteristics of the cycles, with particular reference to spermatid developmental stage as assessed by using a classification scheme adapted to this purpose. Although this classification includes eight stages, a complete block was mostly detected at the earliest stage (Sa1) or at the latest stages (Sd1 and Sd2). Thus, spermiogenesis was blocked at Sa1 stage in 50 cases (71%), at Sd1 stage in eight cases (11%) and at Sd2 stage in 10 cases (14%). Only in two cases (3%) was spermiogenesis blocked at an intermediate stage (Sb2). Globally, fertilization rates were higher for ELSI than for ROSI. No pregnancy was achieved in the ROSI cycles, whereas nine pregnancies resulted from the ELSI cycles. Two of them (both with Sd2 spermatids) ended in a first trimester spontaneous abortion. Of the seven ongoing pregnancies, five are singleton (two with Sd1 spermatids, two with Sd2 spermatids, and one after a mixed transfer after injection of Sa2 and Sd1 spermatids) and two are twin (one with Sd1 and the other with Sd2 spermatids). No pregnancy was achieved in the two cycles with Sb2 spermatids. One of the two twin pregnancies has already resulted in the birth of two healthy children.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0268-1161
pubmed:author
pubmed:issnType
Print
pubmed:volume
14
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1279-86
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Clinical efficacy of spermatid conception: analysis using a new spermatid classification scheme.
pubmed:affiliation
Laboratory of Cell Biology, Institute of Biomedical Sciences, Department of Medical Genetics, Faculty of Medicine, University of Porto, Centre for Reproductive Genetics, Porto, Portugal.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't