Five children have been born conceived from previously isolated and frozen egg cells, Italian scientists announced today (Wednesday 30 June 2004) at the 20th annual conference of the European Society for Human Reproduction and Embryology. The method bears great promise for patients who live in countries where embryo cryopreservation (freezing) is prohibited, like Italy, or who object to embryo freezing for personal reasons, said Dr. Paolo Levi Setti from the Istituto Clinico Humanitas in Milan.
But, said Dr. Levi Setti, this technique would not replace embryo freezing in the future, and much more research into the freezing protocol and other aspects of the procedure was needed. “More children need to be born after the procedure before we can conclude that it is safe”, he said. “To date almost all the research has come from Italy, and it would be good to see other countries becoming involved.”
Between November 1999 and December 2003 the team isolated 2900 egg cells in 286 patients undergoing IVF or ICSI and preserved them. 145 transfers were performed in 120 patients after the eggs were thawed and sperm injected into the cytoplasm of the cell. 16 clinical pregnancies (a pregnancy sac seen in the uterus on ultrasound) were obtained. At the time the data were analysed, 4 patients had delivered 5 normal children.
Emma Mason | alfa
New study finds distinct microbes living next to corals
22.05.2019 | Woods Hole Oceanographic Institution
Summit charts a course to uncover the origins of genetic diseases
22.05.2019 | DOE/Oak Ridge National Laboratory
Engineers at the University of Tokyo continually pioneer new ways to improve battery technology. Professor Atsuo Yamada and his team recently developed a...
With a quantum coprocessor in the cloud, physicists from Innsbruck, Austria, open the door to the simulation of previously unsolvable problems in chemistry, materials research or high-energy physics. The research groups led by Rainer Blatt and Peter Zoller report in the journal Nature how they simulated particle physics phenomena on 20 quantum bits and how the quantum simulator self-verified the result for the first time.
Many scientists are currently working on investigating how quantum advantage can be exploited on hardware already available today. Three years ago, physicists...
'Quantum technologies' utilise the unique phenomena of quantum superposition and entanglement to encode and process information, with potentially profound benefits to a wide range of information technologies from communications to sensing and computing.
However a major challenge in developing these technologies is that the quantum phenomena are very fragile, and only a handful of physical systems have been...
Working group led by physicist Professor Ulrich Nowak at the University of Konstanz, in collaboration with a team of physicists from Johannes Gutenberg University Mainz, demonstrates how skyrmions can be used for the computer concepts of the future
When it comes to performing a calculation destined to arrive at an exact result, humans are hopelessly inferior to the computer. In other areas, humans are...
Scientists develop a molecular recording tool that enables in vivo lineage tracing of embryonic cells
The beginning of new life starts with a fascinating process: A single cell gives rise to progenitor cells that eventually differentiate into the three germ...
29.04.2019 | Event News
17.04.2019 | Event News
15.04.2019 | Event News
22.05.2019 | Life Sciences
22.05.2019 | Life Sciences
22.05.2019 | Physics and Astronomy