Sentences with phrase «ovarian tissue»

Often this means a piece of ovarian tissue is left inside.

Doctors have performed similar operations before and about 60 women have had their fertility restored with frozen ovarian tissue since 2001.

The research means scientists can mature eggs at a much faster rate and can save ovarian tissue from girls for later.

In the situation of this type of tumor, signs of heat are constant; they do not cycle as with ovarian tissue.

Some cats actually grow invisible ovarian tissue down the length of their ovarian ligament, which is cut during the spay surgery but not fully removed.

And although the researchers don't know what the chemicals are, they can identify a signature from cancer cells grown in culture that are different from natural ovarian tissue cells.

One would think that if there is a remnant of ovarian tissue in the spayed pet's abdomen, the surgeon must have left it behind.

Zelinski and her colleagues have found they can reliably thaw ovarian tissue by placing it in a series of solutions with lower concentrations of sucrose, a medical - grade table sugar.

«The success of this treatment offers the possibility of infertile women having stored ovarian tissue transplanted from other women.

Philippa Taylor explained why she thought it was an encouraging discovery: «There could be real benefits for some people, particularly young girls or people who are going through cancer treatment or chemotherapy and that destroys any chance of having their own eggs and growing eggs cells so if you can remove ovarian tissue, grow some egg cells outside the womb and implant them after the treatment then that could be very positive.»

Hsueh's team has used a similar approach to stimulate fragments of human ovarian tissue.

Building on 30 years of research, this achievement outlines three fundamental steps that successfully took ovarian tissue samples and nurtured them into human eggs to a point of full maturity.

Al Matrooshi had chemotherapy and a bone marrow transplant at Great Ormond Street in London to treat her blood condition before doctors in Denmark transplanted slivers of her unfrozen ovarian tissue onto her left ovary, which had stopped working, and on to the side of her uterus.

Given these recent data, ovarian tissue cryopreservation should be considered as a viable option for fertility preservation.»

The use of fetal ovarian tissue for fertility purposes has been banned in the United Kingdom since 1994.

The process from beginning to end, starting with immature eggs within ovarian tissue before reaching mature eggs in the final bottom right image (Credit: Prof Evelyn Telfer and Dr Marie McLaughlin, the University of Edinburgh)

The process from beginning to end, starting with immature eggs within ovarian tissue before reaching mature eggs in the final bottom right image

A group in Edinburgh where this work has been pioneered in the UK has ovarian tissue stored for many women, but as yet none have returned to have it reimplanted.

A low LH level is compatible with the presence of estrogen and presumably ovarian tissue.

Activation and survival of ovarian follicles in vitro: the effects of bone morphogenetic proteins (BMPs) and / or cryopreservation on bovine and feline ovarian tissue Presented by Lara Mouttham PhD Candidate Cornell - Smithsonian Joint Graduate Training Program Zoology and Wildlife Conservation Cornell University Ithaca, NY

Critser, who has transplanted elephant ovarian tissue into mice and gotten the mice to produce elephant eggs, says that producing an embryo «is not so far - fetched.»

In July, a 33 - year - old woman in Edinburgh became the first in Britain to give birth after having frozen ovarian tissue returned to her body.

For it to be useful, cryopreserved ovarian tissue must thaw in a way that maintains its original cellular structure and function.

ONPRC researchers also have been investigating two ways of maturing follicles from cryopreserved, thawed tissue: transplanting strips of ovarian tissue back into a monkey's body, or growing the tissue in vitro by encapsulating individual follicles in a biomaterial that mimics an ovary.

Part of Zoloth's work concerns the complexities of deciding who should be permitted to preserve ovarian tissue — solely cancer patients, individuals with less life - threatening diseases or anyone who wishes to do so.

In this study, researchers analyzed ovarian tissue from populations of reproductively «young» (equivalent to women in their early twenties) and «old» mice (equivalent to women ages 38 - 45).

If the approach works in women it could be used to boost fertility or help those who froze ovarian tissue prior to chemotherapy.

It brought forward publication of its report, Donated Ovarian Tissue in Embryo Research & Assisted Conception.

The new transplant procedure might also enable healthy women to extend their childbearing years by banking ovarian tissue when they are young.

Tal Biron - Shental, a gynecologist at Meir Hospital in Israel, also faced intense criticism when she described her team's attempts to cultivate ovarian tissue from 22 - to 33 - week - old aborted fetuses.

Researchers are also studying ovarian tissue transplantation for patients with cancer.

Egg cells can also be preserved in their hundreds of thousands by collecting ovarian tissue from reproductively active females that die in captivity and dunking it in liquid nitrogen.

Neither normal ovarian tissue nor benign ovarian tumors expressed HGMA2, they found.

It appears that some females possess accessory ovarian tissue separate from the main ovary and this tissue becomes active only after the main ovaries are removed.

If errant ovarian tissue is found, it can be removed generally without difficulty.

I have to have my cattledog «re-spayed» as the original operation left ovarian tissue behind.

So his team looked for cells with vasa still on their surface in human ovarian tissue.

«Oocyte and embryo freezing are regarded as established,» he said, «but ovarian tissue cryopreservation is considered experimental, although it is the only option for prepubertal girls.»

«The use of fetal ovarian tissue for this purpose raises many social, ethical, legal, and scientific concerns,» says Suzi Leather, the chairwoman of Britain's Human Fertilization and Embryology Authority, a government agency that monitors the activities of fertility clinics.

A low LH level is compatible with the presence of estrogen (and presumably ovarian tissue).

That said, feline ovarian tissue has been documented extending down the ovarian ligament, well outside the actual ovary but not visible to the naked eye.

The HFEA report had the same reason for opposing the use of fetuses, albeit in less emotive language: «The public... may feel an instinctive repugnance to the use of ovarian tissue from these sources for research or fertility treatment.»

Sara Matthews, a consultant gynecologist at the Portland hospital, said that within three months of having her ovarian tissue re-implanted, Al Matrooshi went from being menopausal to having the ovary function of a normal woman in her 20s.

Helen Picton, who oversaw the tissue - freezing at Leeds University, told the BBC that in Europe alone, several thousand girls and young women have had ovarian tissue frozen and stored.

Her ovarian tissue is still frozen in liquid nitrogen in St. Paul, waiting for science to catch up.

In 2003, this technique helped Zelinski's team achieve the first live monkey birth using fresh (non-frozen) ovarian tissue that had been transplanted near a monkey's abdomen.

This procedure is notably more challenging than suturing ovarian tissue onto existing live tissue, but it addresses a critical medical need: Ovarian tissue can harbor cancer cells, particularly if the patient has a blood - borne cancer such as leukemia or lymphoma.

In some reproductively «old» mice, up to 35 percent of the ovarian tissue was fibrotic.

113 cases specified the women's ages at the time when they froze their ovarian tissue.