Navigation Links
Ovarian transplantation: New technique gives greatly improved results in this delicate operation
Date:6/29/2009

Amsterdam, The Netherlands: Ultra-fast freezing of ovarian tissue from women who have lost their fertility as a result of cancer treatment can lead to it being used in transplants with the same success rate as fresh tissue, a researcher told the 25th annual conference of the European Society of Human Reproduction and Embryology today (Monday 29 June). Dr. Sherman Silber, Director of the St. Louis Infertility Centre, St. Louis, Missouri, USA, said that freezing tissue by the vitrification method, which avoids ice formation, meant that oocyte (egg) viability was almost identical with that seen in fresh oocytes.

Dr. Silber and colleagues used standard viability testing with fluorescent microscopy to determine the loss or preservation of oocytes in fresh and frozen ovarian tissue of 15 young women undergoing cancer treatment. They also followed up nine homozygotic twin patients after fresh ovary transplantation for the duration of ovarian function and pregnancy outcome, and tested spare tissue that had also been frozen from their ovaries at the time of transplant. Tissue was preserved either by rapid cooling vitrification or by classical slow freezing methods.

"We found that 91.9% of the fresh oocytes were viable compared with 88.9% of those vitrified. However, slow freezing resulted in a 56% loss of viability", said Dr. Silber.

Transplantation of the tissue resulted in a duration of ovarian function of more than four years in five of the seven cases followed up for that long, and all patients regained a normal ovarian cycle within four to five months after the transplant. There was no difference in terms of pregnancy or ovulatory menstrual cycling between fresh and frozen grafts. The scientists used the cortical grafting technique, where very thin slices of tissue are transplanted. This technique is much easier to perform than the delicate microvascular technique, which they described last year in an effort to prevent egg loss and to le
'/>"/>

Contact: MaryRice
mary@mrccommunication.org
European Society for Human Reproduction and Embryology
Source:Eurekalert

Page: 1 2

Related biology news :

1. Genetic testing for breast or ovarian cancer risk may be greatly underutilized
2. Promising new treatment option for women with recurrent ovarian cancer
3. TG2 identified as potential therapeutic target in chemo-resistant ovarian cancer
4. Oocyte-specific gene mutations cause premature ovarian failure
5. Ovarian cancer stem cells identified, characterized
6. Mutation of the COX2 gene can double or treble a womans risk of ovarian cancer
7. Colon cancer screening technique shows continued promise in new study
8. Beating heart machine expedites research and development of new surgical tools, techniques
9. New genomic technique uncovers coral transcriptome
10. Lyncean Technologies Inc. receives $1.2 M from NCRR to develop new imaging technique
11. Indigenous peoples at world summit to share climate change observations, coping techniques
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/16/2015)... NEW YORK , June 16, 2015  With ... the world, security remains a top concern. The recent ... confirms the need for strong authentication within government ... HYPR Token, a biometric one-time password (OTP) authenticator, has ... Processing Standards (FIPS) 140-2 Level 3 validation for tamper ...
(Date:6/15/2015)... , June 16, 2015 According ... Market by Type (Rule-Based, Statistical, and Hybrid), Technologies (Recognition, ... to 2020" published by MarketsandMarkets, The Natural Language Processing ... a CAGR of 18.4% for the forecast period 2015-2020. ...   46 F igures spread   through 155 ...
(Date:6/12/2015)... , June 12, 2015  Securus Technologies, a ... solutions for public safety, investigation, corrections and monitoring, ... patent to electronically capture, analyze and identify participants ... recognition methods. This system can: ... an enrollment and subsequent sign-on process is actually ...
Breaking Biology News(10 mins):Government Ready Biometric Security Approaching as HYPR Corp. Files FIPS 140-2 Level 3 Validation for Its Proprietary Biometric Token 2Government Ready Biometric Security Approaching as HYPR Corp. Files FIPS 140-2 Level 3 Validation for Its Proprietary Biometric Token 3Natural Language Processing Market Worth $13.4 Billion by 2020 2Natural Language Processing Market Worth $13.4 Billion by 2020 3Natural Language Processing Market Worth $13.4 Billion by 2020 4Natural Language Processing Market Worth $13.4 Billion by 2020 5Securus Announces Patent Issued for Authorized Presence Verification During Video Visitation 2
... and other astute observers of nature have long known that ... the biochemical mechanisms that control this nightly stem elongation, common ... biologistsuntil now. In this week,s early online publication of ... California, San Diego report their discovery of a protein complex ...
... Tel Aviv Stem cells from early embryos can be ... revive and repair different areas of the body. Therapies based ... treatment of diabetes, but have been held back by medical ... are capitalizing on the "memories" of stem cells generated from ...
... Several types of cancer, including stomach, liver and colon, ... scientists have theorized that differences in lifestyle, such as diet ... suggests that the differences are rooted in basic biological differences ... new study from MIT shows that treating male mice with ...
Cached Biology News:Biologists discover an 'evening' protein complex that regulates plant growth 2Biologists discover an 'evening' protein complex that regulates plant growth 3Biologists discover an 'evening' protein complex that regulates plant growth 4Biologists discover an 'evening' protein complex that regulates plant growth 5Stem cell 'memory' can boost insulin levels 2Study explains why men are at higher risk for stomach cancer 2Study explains why men are at higher risk for stomach cancer 3
(Date:6/30/2015)... (PRWEB) , ... June 30, 2015 , ... ... July 12 to take part in the first half of “Integrative Biotechnology,” an ... a partnership established in summer 2014, this course combines students from both universities ...
(Date:6/30/2015)... , June 30, 2015  NASA astronaut Kjell ... next month on his first mission to the International ... from 8 to 9 a.m. EDT Tuesday, July 7. ... in Star City, Russia . The interviews ... NASA Television highlighting his mission training. To schedule ...
(Date:6/30/2015)... ... June 30, 2015 , ... ... provide new insights on mechanics of fecal microbiota transplantation in C. difficile patients. ... the microbiome of patients undergoing fecal microbiota transplantation (FMT) as a treatment for ...
(Date:6/30/2015)... ... 30, 2015 , ... The maximum number of shares proposed to be purchased ... shares of unvested restricted stock). On June 29, 2015, the last trading day prior ... reported on the OTCBB was $2.29 per share. , The tender offer will expire ...
Breaking Biology Technology:Rivier University and Beijing City University Academic and Cultural Exchanges Begin 2NASA Astronaut Preps for First Space Station Mission, Available for Media Interviews 2uBiome and OpenBiome Partner for Microbiome Study in FMT Patients 2uBiome and OpenBiome Partner for Microbiome Study in FMT Patients 3Cryo-Cell Commences Tender Offer to Purchase its Common Stock, Up to 750,000 Shares at $3.25 per Share 2Cryo-Cell Commences Tender Offer to Purchase its Common Stock, Up to 750,000 Shares at $3.25 per Share 3
... DIEGO, April 14 XIFIN Inc., the ... diagnostic laboratories, announced today that XIFIN,s CEO ... at the Executive War College Conference in ... attendance will be senior executives, laboratory administrators ...
... to begin after markets close at 2:00 p.m. PT (5:00 ... MASI ), the inventor of Pulse CO-Oximetry and Measure-Through ... first quarter 2009 financial results for the period ended April ... 2009.A conference call to review the results will begin at ...
... N.C., April 14 Pharmaceutical Institute (PI), the ... pharmaceutical and biotech industry, today announced the release ... Markets Excellence(TM) . The series was developed ... leaders from 17 large and midsize pharmaceutical and ...
Cached Biology Technology:XIFIN Inc. CEO to Speak at Executive War College Conference 2XIFIN Inc. CEO to Speak at Executive War College Conference 3Masimo to Report First Quarter 2009 Financial Results on May 5, 2009 2Masimo to Report First Quarter 2009 Financial Results on May 5, 2009 3Pharmaceutical Institute Launches New Training Series Focused on Managed Markets Excellence 2Pharmaceutical Institute Launches New Training Series Focused on Managed Markets Excellence 3
Biotin d anti-mouse Tim-1...
Mouse monoclonal [MLM544] to cardiac Myosin light chain 1 ( Abpromise for all tested applications). entrezGeneID: 4634 SwissProtID: P08590...
Anti-20S proteasome subunits alpha 1, 2, 3, 5, 6 & 7, clone MCP231 Immunogen: Dinitrophenylated proteasomes Molecular Weight: 29 and 32 kDa....
Anti-ADP-Ribosylation Factor 1, clone 3F1 Immunogen: Synthetic peptide corresponding to the C-terminal amino acid sequence of human ARF1. Available Date: 38495...
Biology Products: