HOME >> BIOLOGY >> NEWS
Self-correcting embryos could be an ethically acceptable source of embryonic stem cells

normalised cultures, and more are being developed. So far no stem cells from completely abnormal embryos have been developed.

Although the mechanism by which the embryos self-corrected their abnormalities was not clear, Dr Munn believed that it probably happened when a trisomic embryo (one with three of a particular chromosome instead of the usual two) lost the third chromosome somewhere between the time that the fertilised egg first started to divide and the blastocyst stage. "However, not all the embryos were trisomic. Some had other abnormalities, namely chaotic mosaics, with all the cells abnormal but each one different from the others. These did not produce stem cells," said Dr Munn. "It is impossible to tell at this stage which embryos are capable of self-correcting and which are not."

Dr Munn's findings offer researchers an opportunity to research early embryonic development and stem cells without embryos needing to be specially created for the purpose. The embryos he used would have been discarded by couples seeking fertility treatment, after PGD showed that there were abnormalities that meant the embryos would either fail to implant, or spontaneously abort at some point in the pregnancy, or would result in the birth of a child with one of the defects that the couple were trying to avoid by having PGD in the first place.

"The use of human embryos or their purposeful creation for stem cell research has been controversial, and a ban on research using government funds has been in effect in the USA since 2001. These findings offer scientists the chance to continue their research in this important field, without having to create embryos especially for the purpose," said Dr Munn.


'"/>

Contact: Mary Rice
mary@mrcommunication.org
European Society for Human Reproduction and Embryology
20-Jun-2005


Page: 1 2

Related biology news :

1. Germanys embryo protection law is killing embryos rather than protecting them
2. Time-lapse recordings reveal why IVF embryos are more likely to develop into twins
3. Study: Donated embryos could result in more than 2,000 new embryonic stem cell lines
4. Changes in chromosomal constitution of preimplantation embryos suggest caution in genetic screening
5. Cold Spring Harbor Protocols features methods to understand embryos, clones, stem cells
6. Many couples choose to donate surplus embryos for stem cell research
7. In early embryos, cilia get the message across
8. Successful transplantation from pig embryos to mice
9. How IVF could be causing genetic errors in embryos
10. Researchers report technique for freezing and preserving genetically enhanced pig embryos
11. Forsyth scientists gain greater understanding of how embryos differentiate left from right

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/11/2017)... DUBLIN , Apr. 11, 2017 Research ... Tracking Market 2017-2021" report to their offering. ... The global eye tracking market to grow at ... The report, Global Eye Tracking Market 2017-2021, has been prepared based ... report covers the market landscape and its growth prospects over the ...
(Date:4/6/2017)... April 6, 2017 Forecasts by ... Document Readers, by End-Use (Transportation & Logistics, Government & ... Gas & Fossil Generation Facility, Nuclear Power), Industrial, Retail, ... Are you looking for a definitive report ... ...
(Date:4/5/2017)... 2017 KEY FINDINGS The global ... a CAGR of 25.76% during the forecast period of ... factor for the growth of the stem cell market. ... MARKET INSIGHTS The global stem cell market is ... geography. The stem cell market of the product is ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... (PRWEB) , ... October 11, 2017 , ... ... pathology, announced today it will be hosting a Webinar titled, “Pathology is going ... Pathology Associates , on digital pathology adoption best practices and how Proscia improves ...
(Date:10/11/2017)... LAGUNA HILLS, Calif. , Oct. 11, 2017 ... London (ICR) and University of ... prognostic tool to risk-stratify patients with multiple myeloma (MM), in ... nine . The University of Leeds ... by Myeloma UK, and ICR will perform the testing services ...
(Date:10/11/2017)... ... October 11, 2017 , ... A new ... rates in frozen and fresh in vitro fertilization (IVF) transfer cycles. ... to IVF success. , After comparing the results from the fresh and frozen ...
(Date:10/10/2017)... , ... October 10, 2017 , ... San Diego-based team ... its corporate rebranding initiative announced today. The bold new look is part of ... the company moves into a significant growth period. , It will also expand its ...
Breaking Biology Technology:
Cached News: