Navigation Links
New ways to protect female fertility
Date:9/21/2012

New research offers hope to women whose fertility has been compromised by the side-effects of cancer therapy or by premature menopause.

In a study published today in Molecular Cell, researchers from the Walter and Eliza Hall Institute (WEHI), Monash University and Prince Henry's Institute of Medical Research found that two proteins, PUMA and NOXA, cause the death of egg cells in the ovaries. Blocking the activity of the proteins may lead to new strategies to protect women's fertility.

The team, including Associate Professor Jeffrey Kerr from Monash, Associate Professor Clare Scott, Dr Ewa Michalak and Professor Andreas Strasser from WEHI and Dr Karla Hutt and Professor Jock Findlay from PHI, focused their studies on egg cells called primordial follicle oocytes, which provide each woman's lifetime supply of eggs. Low numbers of these egg cells can also cause early menopause.

Associate Professor Clare Scott, an oncologist at The Royal Melbourne and Royal Women's hospitals, said the research showed that when the DNA of egg cells is damaged following exposure to radiation or chemotherapy, PUMA and NOXA trigger the death of the damaged eggs, leading to infertility in many female cancer patients.

"PUMA and NOXA can trigger cell death, and have been found to be necessary for the death of many different cell types in response to DNA damage," Associate Professor Scott said.

"This removal of damaged cells is a natural process that is essential to maintaining health but, for women undergoing cancer treatment, can be devastating when it leads to infertility."

Associate Professor Kerr said that when these egg-producing cells were missing the PUMA protein they did not die after being exposed to radiation therapy.

"This might ordinarily be cause for concern because you want damaged egg cells to die so as not to produce abnormal offspring," he said.

"To our great surprise we found that not only did the cells survive being irradiated, they were able to repair the DNA damage they had sustained and could be ovulated and fertilised, producing healthy offspring. When the cells were also missing the NOXA protein, there was even better protection against radiation."

Future treatments could block the function of PUMA, preventing egg cell death in patients undergoing chemotherapy or radiation.

Professor Jock Findlay, head of the Female Reproductive Biology Group at PHI, said the study could also have implications for delaying menopause.

"We know that the timing of menopause is influenced by how many egg cells a female has," he said. "Interventions that slow the loss of egg cells from the ovaries could delay premature menopause, prolonging female fertility, such a treatment could have the potential to reduce menopause-associated health conditions, such as osteoporosis and heart disease."


'/>"/>

Contact: Emily Walker
emily.walker@monash.edu
61-399-034-844
Monash University
Source:Eurekalert

Related medicine news :

1. Sexting May Go Hand-in-Hand With Unprotected Sex Among Teens
2. Whooping Cough Vaccine Protection Fades Over Time: Study
3. Weapon-wielding marine microbes may protect populations from foes
4. Stem-cell-protecting drug could prevent the harmful side effects of radiation therapy
5. Canada needs national approach to protect against drug shortages
6. Some Families May Have Natural Protection Against Dementia
7. Therapy combining exercise and neuroprotective agent shows promise for stroke victims
8. Mediterranean diet enriched with olive oil may protect bone
9. Protective bacteria in the infant gut have resourceful way of helping babies break down breast milk
10. Rejected drug may protect against toxic substance common to Alzheimers and Parkinsons diseases
11. New Vaccine May Offer Protection From Deadly Nipah Virus
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/24/2017)... ... March 24, 2017 , ... ... spark a conversation on the current obstacles facing infection prevention and offer strategies ... deaths caused by these infections. , The print component of “Fighting Infection” ...
(Date:3/24/2017)... Dallas, Texas (PRWEB) , ... March 24, 2017 , ... ... Budget Office score is invalid because it does not obey the rules Congress has ... million full-time equivalent jobs, which the GOP reform would restore. Yet, it estimates a ...
(Date:3/24/2017)... Sedona, Arizona (PRWEB) , ... March 24, 2017 ... ... Shamangelic Healing Center, Sedona, Arizona’s Premier Center for Shamanic Healing and Spiritual Awakening, ... Jorge Luis Delgado, June 9--24, 2017. This sacred and spiritual journey during ...
(Date:3/24/2017)... ... March 24, 2017 , ... ... at the Advanced ERISA Benefit Claims Litigation seminar in Chicago, Illinois. She ... Record, The majority of cases litigated under ERISA involve claims for long-term disability ...
(Date:3/24/2017)... ... March 24, 2017 , ... Empower Brokerage, located in Southlake, ... leads programs. , In February, 2017, Empower Brokerage introduced their new “Performance Partners” ... designed to teach how to maximize their sales efforts, as well as how ...
Breaking Medicine News(10 mins):
(Date:3/24/2017)... PUNE, India , March 24, 2017 ... conjugates market has been growing rapidly as the global sales of ... Globally, the growth in the antibody drug conjugates market is driven ... incidences of cancer and wider therapeutic window offered by ADCs. ... Browse 3 Tables and ...
(Date:3/24/2017)... 2017  GenomeDx Biosciences today announced that six abstracts ... Prostate Cancer Classifier tests will be presented at the ... Congress held March 24 to 28, 2017 in ... is Europe,s largest urological event ... urological field. The abstract titled "Muscle invasive ...
(Date:3/24/2017)... Tenn. , March 23, 2017  Provectus ... or the "Company"), a clinical-stage oncology and dermatology ... announced Definitive Financing Commitment Term Sheet (the "Definitive ... a group of the Company,s stockholders, who are ... Group" in a Form 8-K filed with the ...
Breaking Medicine Technology: