HOME >> BIOLOGY >> NEWS
New method of testing eggs for abnormalities could solve problems of embryo freezing

Prague, Czech Republic: Italian researchers have shown for the first time that it is possible to test a woman's egg, before fertilisation, for chromosomal abnormalities that might make an embryo less likely to implant successfully or more likely to miscarry at a later stage.

The technique involves analysing the first polar body, a small membrane-bound cellular structure that is expelled from the mature egg (oocyte) before fertilisation, and which mirrors the chromosomal status of the egg.

Dr Anna Pia Ferraretti told the 22nd annual conference of the European Society of Human Reproduction that, since the change in the Italian law in 2004, doctors were banned from discarding or freezing surplus embryos and only three embryos could be created at one time, all of which had to be transferred.

"As a consequence, a maximum of three oocytes have to be selected for insemination in order to avoid the development of more than three embryos. However, the three chosen might not be the best oocytes and, especially in women over the age of 35, there is a very high chance of choosing aneuploid oocytes oocytes where one or two chromosomes have been lost or gained and which, consequently, will develop into embryos that either fail to implant or are more likely to miscarry at a later stage," said Dr Ferraretti, who is scientific director of the Societ Italiana Studi di Medicina della Riproduzione (SISMER), in Bologna, Italy.

Dr Ferraretti and her team decided to see whether analysis of the first polar body could be a safe and effective tool for choosing viable eggs for fertilisation. Previously, no other researcher had attempted to use this technique in "real time" before insemination. "It involves a great team effort and sophisticated technology," said Dr Ferraretti.

They performed 510 egg retrievals between March 2004 and July 2005, and in 266 cases they tested the first polar body for five chromosomes among the eight that were known to be m
'"/>

Contact: Emma Mason
wordmason@mac.com
44-771-129-6986
European Society for Human Reproduction and Embryology
19-Jun-2006


Page: 1 2 3

Related biology news :

1. Cost-effective method for gene silencing is featured in Cold Spring Harbor Protocols
2. A new method of adult stem cell growth efficacious in treatment of disorders of the cornea
3. Purdue-IU researchers explore new method for early disease diagnosis
4. Sequencing method yields fuller picture
5. New imaging method clarifies nutrient cycle
6. Researchers discover method for identifying how cancer evades the immune system
7. Bioinformatics-related methods are featured in Cold Spring Harbor Protocols
8. New method for reading DNA sheds light on basis of cell identity
9. Nanoparticles hitchhike on red blood cells: a potential new method for drug delivery
10. Rutgers, Penn researchers capture research dollars to improve prostate cancer diagnostic methods
11. Developer of new method for treating bone defects wins WPI Entrepreneurship Award

Post Your Comments:
(Date:8/22/2014)... the birds and the bees. But that old ... fertilized. The fertilization process for flowering plants is ... male and female reproductive cells. New research from ... Munich, and including Carnegie,s Wolf Frommer, David Ehrhardt, ... signaling process that guides flowering plant fertilization. It ...
(Date:8/21/2014)... -- Nxt-ID, Inc. (OTCQB: NXTD), a biometric authentication company ... that its shares of common stock and the warrants ... proposed underwritten public offering of common stock and warrants ... Market, subject to closing of its proposed underwritten public ... trade under the symbol "NXTD" and "NXTDW," respectively. ...
(Date:8/21/2014)... Aug. 21, 2014 /PRNewswire-iReach/ -- LiveScan Service ... agreed to a partnership with Gabriel Health Institute, ... fastest growing Certified Nursing Assistant preparatory schools. ...  an exclusive member of Binary,s LiveScan service provider,s ... will improve its service capabilities by widening ...
Breaking Biology News(10 mins):Calcium and reproduction go together 2Nxt-ID Approved for NASDAQ Capital Market Listing 2Nxt-ID Approved for NASDAQ Capital Market Listing 3LiveScan Provider Binary Biometrics Announces Partnership with Preeminent CNA School, Gabriel Health Institute to Expand Services in Orlando Region 2LiveScan Provider Binary Biometrics Announces Partnership with Preeminent CNA School, Gabriel Health Institute to Expand Services in Orlando Region 3
(Date:8/21/2014)...  BioSpecifics Technologies Corp. (NASDAQ: BSTC ... collagenase-based products marketed as XIAFLEX ® (collagenase ... XIAPEX ® in the EU, today announced ... Phase 2a study of CCH for the potential ... results showed that all three doses of CCH ...
(Date:8/21/2014)... DUBLIN, Ireland , August 21, 2014 ... and Markets ( http://www.researchandmarkets.com/research/3zh3q8/global_hormone ) has announced the ... Market 2014-2018"  report to their offering.  ... also known as hormone therapy, is a ... longer being produced by the body. This ...
(Date:8/21/2014)... NEW YORK , Aug. 21, 2014 Mathematic ... at Harvard University , and funded by the ... aggressive cells within tumors can be visually identified for elimination. ... tumor,s growth. The study, which shows a topological map of ... needed time in cancer research, for while tumor cells can ...
(Date:8/21/2014)... Ontotext S4 , The Self ... . Now the same enterprise hardened text mining, ... unstructured data is available to start-ups and mid-size businesses ... Organizations that do not have resources to evaluate and ... S4 since there is no need for on premise ...
Breaking Biology Technology:BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 2BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 3BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 4BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 5Global Hormone Replacement Therapy Market 2014-2018: Key Vendors are Actavis, Bayer, Merck & Co, Novartis and Novo Nordisk 2Science Power Jeffrey Epstein and Harvard University Fund Project to Visually Stop Tumor Growth 2Ontotext Releases Text Mining & Semantic Technology Running in the Cloud – Welcome to “S4? 2Ontotext Releases Text Mining & Semantic Technology Running in the Cloud – Welcome to “S4? 3Ontotext Releases Text Mining & Semantic Technology Running in the Cloud – Welcome to “S4? 4
Cached News: