Navigation Links
DNA Fingerprinting Could ID Viable Embryos
Date:5/14/2008

Finding may lead to improved pregnancy rates for in vitro patients, fewer multiple pregnancies

TUESDAY, May 13 (HealthDay News) -- Researchers say DNA tests may be able to tell doctors which embryos tabbed for in vitro fertilization (IVF) are most likely to result in the births of healthy babies.

The technique, discussed in a report published online May 14 in Human Reproduction, could also help fertility experts prevent accidental multiple pregnancies in their IVF patients.

A woman's eggs are fertilized with sperm during IVF and then allowed to develop in the laboratory for about five days until they reach the blastocyst, or very early embryo, stage. Doctors then decide which blastocysts look most likely to develop successfully and how many to put into the woman's womb.

Since reliable tests for determining which blastocysts are viable do not exist, couples often choose to have more than one blastocyst implanted in the woman's womb. While this increases the chances of a successful pregnancy, it also raises the risk of a woman becoming pregnant with two or more babies at once. Multiple pregnancies bring added dangers to the mother and babies.

In the study, researchers removed cells from the blastocysts being developed for 48 women, 25 of whom later became pregnant from the fertilized eggs resulting in 37 babies being born. The DNA from these cells was matched with the babies' DNA, thereby telling researchers which blastocysts developed into babies.

In analyzing the expression of genes in the viable and non-viable blastocysts, the team noted differing patterns. The genes expressed in the viable blastocysts, for example, are involved in cell adhesion, cell communication, cellular metabolic processes and response to stimuli -- all key processes involved in embryo implantation.

This finding could lead to doctors being able to select the single most viable embryo from a group for transfer from the laboratory to the womb, the researchers said.

"One of the major stumbling blocks to worldwide acceptance of a single embryo transfer policy is the lack of highly predictive criteria to select the single most viable embryo within a cohort," co-author Dr. Gayle Jones, senior research scientist at the Monash Immunology and Stem Cell Laboratories, said in a prepared statement. "The ability to use objective, measurable criteria rather than subjective observations, such as morphology, should improve the predictive value and provide sufficient confidence for clinicians to shift towards single embryo transfers for all patients without a concomitant drop in pregnancy rates. This would effectively reduce multiple pregnancies, which is a priority in the field of assisted reproductive medicine at present."

More work needs to be undertaken before these findings become applicable in the clinic, the researchers said.

More information

The American Society for Reproductive Medicine has more about infertility.



-- Kevin McKeever



SOURCE: European Society for Human Reproduction and Embryology, news release, May 13, 2008


'/>"/>
Copyright©2008 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Medicare Fee Cuts Could Devastate Rehabilitation Services, Physical Therapists Warn Congress
2. Noise in Artery Could Warn of Heart Risk
3. Computer games high score could earn the Nobel Prize in medicine
4. Telemedicine could eradicate many expensive ED visits
5. Common Medications Could Cause Physical Impairment in the Elderly
6. New Lewin Group Analysis: Medicare Cuts for Nursing Facility Care Could Have Economic Impact Up to $4.2 Billion, Threaten Jobs
7. New treatment could reduce chronic lung disease in premature babies
8. Crime Scene Investigation methods could help in the battle against hospital infections
9. Cancer could return unless stored ovarian tissue undergoes adequate testing before re-implantation
10. Millions of Euros could be saved if breast cancer follow-ups were led by specialist nurses
11. Readily available treatment could help prevent heart disease in kidney patients
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/21/2017)... ... January 21, 2017 , ... "ProDOF is the perfect set of tools for video editors ... in a scene," said Christina Austin - CEO of Pixel Film Studios. , Video ... create the illusion of a DSLR racking focus from one area into the next. ...
(Date:1/21/2017)... (PRWEB) , ... January 21, 2017 , ... ... of Alumni Relations, Dianne Travis-Teague, the electrifying line-up of events for its annual ... alumni, family, friends, and community. “Coming Home 2017” will be held on ...
(Date:1/21/2017)... ... 2017 , ... In the United States, 20 million women and 10 million ... often feel shame for having struggled with an eating disorder as well as common ... Strong in Life After an Eating Disorder” -- to be featured at this year’s ...
(Date:1/20/2017)... ... January 20, 2017 , ... A new partnership between ... they no longer use or need, from clothes to couches to dressers and bicycles. ... and take them to the nearest Goodwill donation center through February 28th. , ...
(Date:1/20/2017)... ... January 20, 2017 , ... Doctor C LLC, a company based out of ... show to continue the marketing and distribution of its product, The Right C. , ... percent better absorption than traditional vitamin C supplements. At the trade show, Doctor C ...
Breaking Medicine News(10 mins):
(Date:1/19/2017)... Jan. 19, 2017  Stealth BioTherapeutics Inc. ( Stealth ... mitochondrial dysfunction, today announced new additions to its senior ... Chief Medical Officer, and Daniel Geffken as ... Jim Carr , Pharm.D. has been promoted to ... pleased to welcome Doug and Daniel to our management ...
(Date:1/19/2017)... LONDON , January 19, 2017 ... Grothey ; European Oncology & Haematology, 2016;12(Suppl 2):3-8; ... ... http://photos.prnewswire.com/prnh/20151014/276718LOGO) Published recently in ... the peer-reviewed journal from touchONCOLOGY, an article by ...
(Date:1/19/2017)... January 19, 2017 Pfizer ... the Milner Therapeutics Consortium   Major ... Cambridge   The Milner ... PFE ) as a partner to the Milner Therapeutics ... enables the efficient transfer of materials between industry and ...
Breaking Medicine Technology: