A
Astrid Stecher
Publications - 30
Citations - 912
Astrid Stecher is an academic researcher. The author has contributed to research in topics: Embryo transfer & Blastocyst. The author has an hindex of 14, co-authored 30 publications receiving 819 citations.
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Journal ArticleDOI
Blastocyst development after sperm selection at high magnification is associated with size and number of nuclear vacuoles.
Pierre Vanderzwalmen,Antje Hiemer,Paul Rubner,Magnus Bach,Anton Neyer,Astrid Stecher,P Uher,Martin Zintz,Bernard Lejeune,Sabine Vanderzwalmen,Guy Cassuto,Nicolas H. Zech +11 more
TL;DR: Spermatozoa selection at high magnification before intracytoplasmic sperm injection seems to be positively associated with pregnancy rates after day 3 embryo transfers and 'early and late paternal effects', both of which may have an impact on early embryonic development are confirmed.
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Intracytoplasmic injection of spermatids retrieved from testicular tissue: influence of testicular pathology, type of selected spermatids and oocyte activation.
Pierre Vanderzwalmen,H. Zech,A Birkenfeld,M Yemini,G. Bertin,Bernard Lejeune,M. Nijs,L. Segal,Astrid Stecher,B. Vandamme,E. Van Roosendaal,Robert Schoysman +11 more
TL;DR: Spermatid microinjection into oocytes has proven to be a successful assisted reproduction procedure in the animal model and in the human species, since in the latter a few full-term pregnancies were actually obtained.
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Aseptic vitrification of blastocysts from infertile patients, egg donors and after IVM
Pierre Vanderzwalmen,Fabien Ectors,Luc Grobet,Yannis Prapas,Yannis Panagiotidis,Sabine Vanderzwalmen,Astrid Stecher,P. Frias,Juergen Liebermann,Nicolas H. Zech +9 more
TL;DR: In spite of reduced cooling rates due to aseptic vitrification conditions, a three-step exposure to cryoprotectant solutions protects the embryos effectively from cryo-injuries and guaranties high survival rates.
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Pregnancy and birth outcomes following fresh or vitrified embryo transfer according to blastocyst morphology and expansion stage, and culturing strategy for delayed development
TL;DR: It is suggested that vitrification of non-top quality blastocysts as well as delayed cavitating and blastulating Day 5 embryos should be considered in autologous IVF cycles.
Journal ArticleDOI
The combination matters--distinct impact of lifestyle factors on sperm quality: a study on semen analysis of 1683 patients according to MSOME criteria.
Johannes Wogatzky,Barbara Wirleitner,Astrid Stecher,Pierre Vanderzwalmen,Anton Neyer,Dietmar Spitzer,Maximilian Schuff,Birgit Schechinger,Nicolas H. Zech +8 more
TL;DR: Combinations of adverse lifestyle factors could have a detrimental impact on sperm, not only in terms of motility and sperm count but also in Terms of sperm head vacuolization.