fertility

Development of portable infectious disease detector

...thepoint-of-care diagnostics market.For their home fertility tester, Pria kept costs down by keeping theirsystem as simple as possible. Instead of trying to squeeze everythingonto a single chip, Pria designers started with a desktop diagnosticsystem and shrank it down into a device about the size of a coffee c...

First frozen egg baby born in Canada

...This is fantastic news for both the family and for fertility health research and we would like to congratulate ...oung women diagnosed with cancer to preserve their fertility before undergoing chemotherapy and radiotherapy, which can cause infertility and premature menopause...

Technique may allow cancer patients to freeze eggs, preserving fertility before starting treatment

...ld be insurance for those women at highest risk of fertility problems after cancer treatment. When a woman wis...seling and information for women considering their fertility options, and the clinic currently freezes embryos for cancer patients who have a partner. The clinic...

Human Eggs Can Develop From Ovarian Surface Cells In Vitro

...an eggs from OSE cells may help women with reduced fertility and premature menopause, who lack follicles in their ovaries, to have a better chance of conceiving through in vitro fertilization. Eventually, frozen OSE cells from younger females may be preserved for later production of fresh eggs. This may preven...

Scripps research scientists identify infertility molecule

...ain type of molecule known as an LPA receptor have fertility problems, which suggests that these receptors play...ar on the surface of cells in a mouse's womb, have fertility problems. These mice are able to produce eggs normally, so that the eggs can be fertilized, but the ...

Scientists succeed in cloning human embryos from eggs matured in the lab

...e almost all that are retrieved from women seeking fertility treatment are used to treat the patient. Immature oocytes are not used routinely for treatment at present, and so any that are retrieved can be donated for research. These immature oocytes are arrested in the prophase I stage, before meiotic division...

Invitrogen Launches i-Path -- A Unique Systems Biology Platform at BIO 2005

...e almost all that are retrieved from women seeking fertility treatment are used to treat the patient. Immature oocytes are not used routinely for treatment at present, and so any that are retrieved can be donated for research. These immature oocytes are arrested in the prophase I stage, before meiotic division...

Environmental chemical cocktail may sabotage sperm

...uld have important negative implications for human fertility for two reasons. Firstly, humans are likely to be ...subtle effects that could have a serious impact on fertility without reducing the number of sperm being produced." The mechanism of action of the environmental ...

New Discovery May Help Doctors Treat Infertility

... suggests that medications commonly referred to as fertility drugs may be ineffective for women who lack a gene... the estrogen receptor beta. The study showed that fertility drugs did not improve ovulation rates in mice that were genetically engineered to lack estrogen rece...

Most embryos produced during IVF do not result in live births

...viewed seven years of U.S. statistics from all the fertility clinics that report data on reproductive techniques. Director of the Yale Fertility Center, Pasquale Patrizio, M.D., professor in the Department of Obstetrics, Gynecology & Reproductive Sciences led the project. "Something in nature has decided...

Costly breeding programs for endangered species pay off

...ing groups exhibited similar levels of fitness and fertility as long as they remained in a controlled, "captive" setting. However, after the simulated release into the wild, the MAI populations were less likely to go extinct or to suffer population crashes than were the populations that had undergone limited i...

Chernobyl: The true scale of the accident

...onsequence, no evidence or likelihood of decreased fertility among the affected population has been found, nor ...erritories, no evidence or likelihood of decreased fertility has been seen among males or females. Also, because the doses were so low, there was no evidence of ...

Center releases new public survey on stem cells

...ryos used are those remaining at the conclusion of fertility treatments that would otherwise be discarded or kept in frozen storage; a ban on the use of Federal funds to create new stem cells using these embryos currently is in effect, and various pieces of legislation pending in Congress would either extend t...

UK sperm donor crisis

A study by a leading UK fertility centre has found that the numbers of men ?especial... of the study, particularly in the early days when fertility issues were less well known to the public. The unit is also reviewing its high cut-off rate for se...

New male contraceptive clears hurdle

... the sperm as they swim by. In study animals, male fertility returns if the RISUG is flushed out with another injection that dissolves the gel. Elaine Lissner, director of the nonprofit Male Contraception Information Project in San Francisco, says she is not surprised that American men are watching the RISUG ...

Hormonal male contraception reversible after few months for all men

...permatogenesis recovered to levels compatible with fertility in all men. Dr Liu and colleagues comment: "Our data provide strong assurance that the previously described efficacy of hormonal male contraceptives is coupled with highly predictable recovery to semen characteristics that are compatible with fertil...

Amazonian terra preta can transform poor soil into fertile

...ers prevent agricultural runoff, promote sustained fertility and reduce input costs. ...

GPSDB, the free Gene and Protein Synonyms DataBase

...ers prevent agricultural runoff, promote sustained fertility and reduce input costs. ...

World faces challenge as life expectancies lengthen, scientist says

... be good news for many European countries with low fertility rates. "Countries like Sweden and Italy have been having this huge debate for many years over population decline," Tuljapurkar explained. "A lot of the debate is about immigration: People have been telling them they need to increase immigration in or...

Male rivalry increases when females at most fertile, say researchers

...r male physical appearance vary according to their fertility status. During ovulation women tend to find masculine looking men more attractive and prefer their voices and odour. During this fertile phase women are more likely to have an affair with a masculine-looking man, as their features are linked to hig...

A surprising pair of proteins help make healthy eggs

...ncer. "Thousands of women in this country undergo fertility treatments each year and some have no idea why the...e a transcription factor called TAF4b plays in the fertility of female mice. Without this protein, egg-producing ovarian follicles didn't develop properly. The r...

Testes to incubate stem cells

...ure human spermatogenic stem cells to restore male fertility after cancer therapy," says Hannu Sariola, from the University of Helsinki in Finland who is also working towards a similar goal. Bizarrely, a brain cell growth factor also has a powerful influence on spermatogonial stem cells. Glial cell derived n...

Fertility drugs given 'all-clear' in new study

...ntaneously with that in children conceived through fertility treatments using letrozole. This is an apples-and-oranges comparison, because there are always fewer birth defects in children conceived spontaneously." The earlier study also compared different age groups between the control and treatment. The new ...

Ethiopian development raises birth rate

...iverted towards reproduction, resulting in greater fertility and reduced mortality. However, since food and other resources are already scarce, this comes at the cost of an increase in childhood malnutrition. Dr Gibson said: "This study is, to our knowledge, the first to demonstrate a link between a technol...

New brain hormone puts brakes on reproduction

...p the body's hormones within the optimal range for fertility and successful mating. The head of the axis is the brain's GnRH-producing hypothalamus, which communicates via a blood portal with the anterior pituitary and stimulates production of the hormones gonadotropin, luteinizing hormone and follicle stimula...

Component in soy products causes reproductive problems in laboratory mice

...cycles, problems with ovulation, and problems with fertility as they reached adulthood. The new study looks at the direct effects of genistein on the ovaries during early development. "We knew genistein was linked to reproductive problems later in life, but we wanted to find out when the damage occurs," said ...

The first baby boom

...ople who could be fed, but also boosted individual fertility in women to a possibly unique extent on such a scale in human history," write the authors. ...

It's all in the genes

...te of cottonwood leaves, which in turn affects the fertility of soils, which affects the microbes in the soil, which affect the insects that live in the soil or eat the leaves, which affect the birds that feed on the insects, and so on. In the July issue of Nature Reviews Genetics and the May issue of Evoluti...

The vicious cycle of rainforest destruction

...rainfall are savanna. Other issues such as soils, fertility and drainage must play a part, the researchers believe. They will make measurements in Africa, Australia and South America, focusing on 'zones of tension' where rainforest and savanna currently grow side by side. Using these measurements, detailed c...

Injection may prevent infertility in men receiving cancer chemotherapy

... the testes of cancer patients against the loss of fertility caused by chemotherapy, a scientist told the 22nd ...y drug. "The effects of chemotherapy treatment on fertility are an important issue for long-term survivors of cancer who may not have started or completed a fam...

New egg freezing technique offers hope to hundreds of women

...undreds of women who want to preserve their future fertility but who, for whatever reason, only have eggs, not ...help to eliminate the existing time differences in fertility between men and women, whereby women's supplies of eggs decline at a faster rate than men's supplies...

Dominant meerkats render rivals infertile

...nant female benefits in two ways from reducing the fertility of her subordinates. First, her own pups will benefit from not having to compete with additional pups born to a subordinate for the limited number of available caretakers. Second, because subordinate females actually kill other females' pups when pr...

New technology addresses female fertility preservation

...this work has implications for the preservation of fertility for women and girls with cancer," said Teresa K. Woodruff, Professor of Neurobiology and Physiology who led the study together with Lonnie D. Shea, Associate Professor of Chemical and Biological Engineering. "This system establishes a core technology...

Fertility hope as study shows eggs survive in older ovaries

...rch that could have broad implications for women's fertility treatments, scientists have found that despite the...for ovarian stem cell research and help women with fertility conditions," he said. One in six Australian couples faces some form of infertility. Due to the limi...

Embryo tests give parents the choice

MORE than 40 per cent of fertility clinics in the US are allowing couples to choose t...r frozen. The survey, which covered 186 out of 415 fertility clinics in the US, found that around two-thirds of PGD procedures were performed to identify embryos...

Male chimpanzees prefer mating with old females

...orm long-term mating partnerships, and that female fertility is limited by menopause and, therefore, age. The converse of such an explanation suggests that species that appear to lack long-term pair bonding and menopause (such as chimpanzees) should not exhibit such strong preferences by males for young female...

Single molecular 'mark' seen as pivotal for genome compaction in spores and sperm

...or the other. "Compaction might also affect sperm fertility and function in the higher organisms, and thus the propagation of the species," says Thanuja Krishnamoorthy, Ph.D., lead author on the study. "It's vital that we better understand genome compaction during the production of mature sperm." The molecul...

Scientists crack genetic secrets of human egg

...d human eggs that were obtained from women seeking fertility treatment at a clinic in Santiago, Chile. Women at the clinic must be reproductively healthy, no older than 35, and the cause of infertility must lie within the man. This presented the availability of exceptionally healthy eggs, Cibelli said. All the...

Heavy smoking cuts women's chance of pregnancy -- even with donated oocytes

Heavy smoking may reduce female fertility by directly affecting the uterus ?making it less r... Human Reproduction. The finding, from a team of fertility experts in Portugal and Spain, comes as a result of comparing the pregnancy rates between non-heavy ...

Discovery of the first resistance gene to rice yellow mottle virus

... mottling and then tissue death on the leaves. The fertility and development of seeds are affected, which causes considerable yield losses at harvest. Transmission of RYMV occurs by way of insect vectors or by straightforward contact between plants. Prevention measures, like direct sowing or the burying of s...

Underweight women at greater risk of miscarriage

...scarriage appeared to rise by more than 60%, while fertility problems were associated with 41% increased odds. All types of assisted reproduction were associated with increased odds, but the ratios were highest among pregnancies resulting from intrauterine insemination or artificial insemination. Women who ...

Temple University Hospital investigates treatment for cervical dysplasia

...s effective, it may cause complications related to fertility and childbirth, such as cervical stenosis, pre-term delivery, low birthweight babies, and premature rupture of membranes." Approximately 20 million people, mostly women, are currently infected with HPV, with 6.2 million new infections occurring an...

Many couples choose to donate surplus embryos for stem cell research

...at, of 400,000 embryos stored at that time in U.S. fertility clinics, less than 3% were available for research purposes. However, that study was primarily designed to quantify the number of frozen embryos via questionnaires sent to couples before or shortly after their IVF cycles. In the current study, the ...

Cancer researchers add spice to research against rare neuromuscular disease

...instance, the mice treated with ASC-J9 have normal fertility and are completely healthy sexually, which wouldn't be the case if we simply took away testosterone." ...

No-scalpel vasectomies by skilled surgeons may speed recovery

... equally effective in terms of providing permanent fertility control. Although the larger study seemed to demonstrate many advantages to the no-scalpel method, the reviewers found the results inconclusive, largely because results from the studies could not be pooled for analysis. "From the results of the re...

Early-stage sperm cells created from human bone marrow

...o say if it has potential applications in terms of fertility treatments in humans. Prof Nayernia gained worldwide acclaim in July 2006 when he announced in the journal Developmental Cell that he and colleagues had created sperm cells from mouse embryonic stem cells and used these to fertilise mice eggs, re...

Researchers find gene mutation that causes infertility in male mice

...infertility. While most studies on the genetics of fertility stem from analyses of mice that have had a custom ...ct to identify ultimately all the genes needed for fertility in mice and apply this information to the human situation. ...

Row over study puts Korea's scientific community under scrutiny again

...n doctor, Jeong Hwan Kim, against Kwang Yul Cha, a fertility specialist and one of the most powerful players in the country's struggle for biotech supremacy, writes journalist Jonathan Gornall. It is also threatening to disrupt Korea's efforts to recover scientific credibility in the wake of the recent scandal...

AAAS decries latest stem cell veto

...s left over and due to be discarded after in vitro fertility treatments. Current U.S. policy limits such funding to fewer than 20 stem cell lines that had been created when the president first announced U.S. policy in 2001. "Our concern is that this action has the potential to delay development of important...

Studies to find better ways to preserve human eggs, ovarian tissue under way

... are faced with the reality that you may die, your fertility is the most important thing you are thinking or talking about, but there are a lot of women interested in talking about it,” says Dr. Emmi. She hopes her work with Dr. Ying C. Song, cryobiologist, will one day give her more to say. They are collec...

Soils offer new hope as carbon sink

...uel and agrichar which can be used to enhance soil fertility and store carbon long-term. NSW DPI senior research scientist Dr Lukas Van Zwieten said soils naturally emit about 10 times more greenhouse gas on a global scale than the burning of fossil fuels. "So it is not surprising there is so much intere...