P
Pierre Vanderzwalmen
Researcher at University of Liège
Publications - 114
Citations - 4156
Pierre Vanderzwalmen is an academic researcher from University of Liège. The author has contributed to research in topics: Embryo transfer & Intracytoplasmic sperm injection. The author has an hindex of 35, co-authored 112 publications receiving 3906 citations.
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Journal ArticleDOI
Pregnancy after fertilisation with human testicular spermatozoa
Robert Schoysman,Pierre Vanderzwalmen,M. Nijs,L. Segal,G. Segal-Bertin,L. Geerts,E. Van Roosendaal,D. Schoysman +7 more
Journal ArticleDOI
Births after vitrification at morula and blastocyst stages: effect of artificial reduction of the blastocoelic cavity before vitrification
Pierre Vanderzwalmen,G. Bertin,C. Debauche,V. Standaert,E. Van Roosendaal,M. Vandervorst,N. Bollen,H. Zech,Tetsunori Mukaida,K. Takahashi,Robert Schoysman +10 more
TL;DR: The results showed that survival rates in cryopreserved expanded blastocysts could be improved by reducing the fluid content, presumably because mechanical damage caused by ice crystal formation was avoided.
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.
Journal ArticleDOI
Vitrification of human blastocysts with the Hemi‐Straw carrier: application of assisted hatching after thawing
Pierre Vanderzwalmen,G. Bertin,C. Debauche,V. Standaert,N. Bollen,E. Van Roosendaal,M. Vandervorst,Robert Schoysman,Nicolas H. Zech +8 more
TL;DR: Artificial opening of the zona pellucida after warming of vitrified blastocysts significantly improved the rate of transfers with hatched blastocyst and the implantation and pregnancy rates.
Journal ArticleDOI
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.