Tag: "embryo" at medical news
Nature's Hardest Puzzle
...ham says. Tooth enamel begins to form in the human embryo
when a specialized layer ofcells, called ameloblasts, in the embryonic tooth bud secretes amelogeninproteins. The amelogenins self- assemble to form the extracellular matrixwithin which the inorganic crystals of mineral start to form. "The earliest...
New Research Points The Way To Restoring Noise-Induced Hearing Loss In Mammals, Including Humans
...n explanation forthe inability of mammals past the embryo
stage to regenerate sensory hair cells.The new res...ng andproliferating, as they are able to do at the embryo
stage. Earlier research showed that such terminally differentiated cellsexpress high levels ...
Fetal Cell Therapy Benefits Some Parkinson's Patients
...ional prohibition on use offederal funds for human embryo
research extends only to studies in which a humanembryo is created for research purposes or is subjected to risks greater thanthose allowed for fetuses in utero. In addition to Dr. Freed and his colleague Robert Breeze, M.D., at theUniversity of Colo...
Cedars-Sinai researchers present findings suggesting link between high soy diet and eventual developmental changes in children
...ut we are a very different creature when we are an embryo
or a fetus or a child or a teenager. We're very different when we are a reproductive-age adult or an aging adult. At each stage, we have a different profile of risk or benefit," said Claude Hughes, M.D., Ph.D., director of the Center for Women's Heal...
OHSU scientists seek to advance the study of human disease by taking steps to clone identical monkeys through embryo splitting
...on-human primate twin using a lab technique called embryo
splitting. The method, which has produced a healt...he monkey was produced by separating an eight-cell embryo
into four sets of two-cell embryos. Scientists used microscopic instruments to perform the delicate ...
Missing proteins in the uterus tied to infertility in women with endometriosis
...ion of the proteins in question may interfere with embryo
implantation in the uterine lining. Alphav-beta3 a...e receptivity, a sign that the uterus is ready for embryo
attachment, and their absence might be used to identify infertile women with endometriosis who might...
Study suggests mechanical forces drive early heart development
...own as looping, one of the most critical stages of embryo
heart development, where the heart at just two day...he National Institutes of Health (NIH).The chicken embryo
heart is very close to the human heart in its development processes. It takes 21 days to hatch a ch...
IVF children at increased risk of neurological disorders
...t a reduction in this risk is possible if only one embryo
is transferred during IVF, reducing the likelihood.... To limit these risks, we recommend that only one embryo
should be transferred during IVF. In an accompanying Commentary (p 459), David Healy and Kerryn Sau...
Reproductive tourism: Italy faces 'womb drain' as ART becomes better in other European countries
...n and Finland have the lowest proportion of triple embryo
transfers (4.5% and 5.4% respectively), but were a...regnancy success rate Sweden's pregnancy rate per embryo
transfer was 36% for IVF, and Finland's was 29.6%. Dr Nyboe Andersen will tell the conference: "This...
Italy now faces worldwide storm of protest over fertility proposals
...re are inadequate data to ensure the safety of the embryo
and the resulting child."...
NIAMS scientists find biochemical 'switch' directs muscle building
...somites (the regions of the embryo
from which muscle cells are derived) and augmented expression of muscle genes. Dr. Sartorelli's group continues to investigate how the myoblasts are stimulated to fuse into myotubules. One theory is that the performance of po...
Taking painkillers during pregnancy increases risk of miscarriage
...tty acids needed for successful implantation of an embryo
in the womb). Because NSAIDs and aspirin act on th... lead to abnormal implantation that predisposes an embryo
to miscarriage. In contrast, paracetamol acts only in the central nervous system, which may explain ...
Pancreatic cancer linked to developmental cell signaling pathway
...roteins that normally regulate rapid growth in the embryo
may often be responsible for the out-of-control cell divisions in cancer, the scientists say. "Surgery has represented the only possible cure for pancreatic cancer patients," said Sarah P. Thayer, MD, PhD, of MGH, co-first and co-senior author of the...
Mayo Clinic finds weight not a factor among women using fertility technologies to become pregnant
...unction -- the ability of the uterus to receive an embryo
and carry a pregnancy to term. The Mayo Clinic stu...en we control variables such as hormone levels and embryo
quality, the uterus works fine, regardless of body mass. The key is good embryos," says Ian Tummon, ...
NIH funds two UCSD scientists to venture deep into human genome
... precise expression of roughly 30,000 genes during embryo
development and normal physiological processes has become the next frontier in biomedical research." He added that his research team will devise an integrated approach combining experimental and computational methods to systemically dissect the gene ...
New report presents options for oversight of genetic testing of human embryos
...val of one or two cells from the fertilized egg or embryo
and analysis of the genetic material. Test results...about the safety of the in vitro fertilization and embryo
manipulation required for PGD and about the accuracy of the genetic tests that are used. Second, som...
The BESST way to judge IVF success
...ng the rate of singleton births as a percentage of embryo
transfers. The tables, released a month ago by the Centers for Disease Control in Atlanta, Georgia, highlight the new category so it stands out among other criteria. "Everybody agreed that was the ideal," says Joyce Zeitz of the Society for Assiste...
Ovarian tissue storage and later transplant shows promise for women infertile from cancer therapy
...isation resulted in the development of a four-cell embryo
which was implanted into the woman, although she did not become pregnant. Dr Oktay comments: "This research represents a potentially significant reproductive advancement in two respects: first, women can preserve their fertility by freezing their ...
OHSU scientists advance fertility preservation procedure
...which is impressive considering the quality of the embryo
and the healthy infant." The researchers suggest that in the case of human treatment, one ovary might be removed at the time cancer is diagnosed in a patient. The ovarian tissue would be frozen and then implanted after the patient was cured of canc...
Jefferson scientists use zebrafish to show effects of ionizing, UV radiation differ in development
... transition, the point in development in which the embryo
goes from relying on the maternal mRNA in the yolk sac to the embryo
itself controlling development," Dr. McAleer says. Prior to this transition, the fish are extremely...