Tag: "fetal" at biology news

Embryonic stem cells correct congenital heart defect in mouse embryos

...to the mother can cross the placenta and influence fetal cardiac development in the Id knock-out embryo. The Id knock-out embryos were born, but with partial rescue of cardiac defects and abnormal gene expression profiles. As a result, Id knock-out pups whose mothers were manipulated bypassed mid-gestation...

Genetic link to risky pregnancy

...t threatens both mother and developing child. The fetal cells charged with this important task, called trophoblast cells, must communicate with maternal immune cells known as natural killer (NK) cells. During these interactions, the trophoblast sends signals to the NK cells, which can then assist them in...

Technique for genetically modifying blood stem cells brings cure for blood diseases closer

...le, composed of alpha- and gamma-globin, is called fetal Hb (HbF) because it normally occurs only during the fetal stage of development. The use of HbF prevents the need to introduce normal beta-globin into the body...

A new culprit in depression?

...f life. They have potent effects during embryonic, fetal and child development, and can modify the size and structure of particular brain regions. They are also involved in the repair of adult tissues after injury and may mediate the cross-talk between different cell types in the brain. As a result, they ...

UCSD biologists discover chemical important in guiding visual system development

... and other developmental defects characteristic of fetal anti-convulsant syndrome could result from these drugs interfering with the spontaneous activity necessary for patterning the developing nervous system." A previous study by Feller and her colleagues showed that the pattern of neural activit...

Novel biotoxin being studied for use in opioid withdrawal

...nclude HIV/AIDS, Hepatitis B, and C, tuberculosis, fetal effects, violence, and crime. Family life, workplace, and educational environments are all affected, with associated costs reaching billions of dollars each year. "There's a need for new treatments for heroin dependence and for opiate abuse, and thi...

Low-carb diet during pregnancy improved triglycerides, fat metabolism in offspring

...ring" will appear as one of 20 research studies on fetal programming (how a mother's actions affect her offspring) presented in the January 2005 edition of the American Journal of Physiology Regulatory, Integrative, and Comparative Physiology . The authors of the study are Junlong Zhang, Chunli Wang, a...

Scientists generate human islet precursor cells in culture

...n, and exposed these islets to a medium containing fetal bovine serum. Over 17 days the cells in the clusters migrated out until the original islets were depleted. These migrating islet cells, identified as insulin-expressing cells, then transformed into more primitive precursor cells that do not produce...

Evidence that human brain evolution was a special event

... in the development of the brain during embryonic, fetal and infancy stages. The other group consisted of genes involved in "housekeeping" functions of the brain necessary for neural cells to live and function. If intensified selection indeed drove the dramatic changes in the size and organization of the b...

JCI table of contents, 3 January 2005

...investigations, have shown that transplantation of fetal DA neurons can relieve the symptoms this disease. ...ties in obtaining sufficient and appropriate donor fetal brain tissue have limited the application of this therapy. These researchers previously demonstr...

Transplantation of monkey embryonic stem cells reverses Parkinson disease in primates

...investigations, have shown that transplantation of fetal DA neurons can relieve the symptoms this disease. ...ties in obtaining sufficient and appropriate donor fetal brain tissue have limited the application of this therapy. These researchers previously demonstrated...

Researchers tease out one critical role of tumor-suppressor gene

... a reduction in the number of macrophages in these fetal mouse livers. "Without Rb, the number of mature macrophages in the fetal liver was markedly reduced," said Leone, who is also a geneticist with Ohio State's Comprehensive Ca...

Current human embryonic stem cell lines contaminated UCSD/Salk team finds

...ue cells (so-called "feeder layers") from mice and fetal calf serum. "The human embryonic stem cells remained contaminated by Neu5Gc even when grown in special culture conditions with commercially available serum replacements, apparently because these are also derived from animal products," said both paper...

PET/MRI scans may help unravel mechanisms of prenatal drug damage

... and how fast the drug accumulates in maternal and fetal organs. "Understanding how drugs are transferred...not provide adequate anatomical detail of the tiny fetal organs. The current study combined PET with high-resolution magnetic resonance imaging (MRI) to trac...

Gene therapy for Parkinson's disease moves forward in animals

...imental treatment involving the transplantation of fetal cells into the brains of Parkinson's patients, and his colleague Deniz Kirik, a neurobiologist. "This work with GDNF in combination with other regenerative medicine approaches, including stem cells, promises to have a place for both protection and re...

New stem cell source could boost bone marrow success

...t since the umbilical cord grows so rapidly during fetal development, there must be some source producing these mesenchymal stem cells," says Davies. "We found that the jelly tissue immediately around the vessels had the richest population of these cells. Once we isolate them, it only takes 21 days to gene...

PCRM develops world's first cruelty-free insulin assay

...ining antibodies produced from cells cultured with fetal calf serum. Neither was acceptable to us." The a...e, procedure using a synthetic replacement for the fetal calf serum used as a culturing medium in millions of medical tests every year. After months of pain...

UCSD team discovers specialized, rare heart stem cells in newborns

...t have been programmed to form heart muscle during fetal growth. Until this new discovery, the cells were ...ieve the isl1+ progenitor cells are left over from fetal development so that they can insure the closure of any existing small heart defects and the formatio...

Prior caesarean delivery not linked to increased risk of stillbirth

...d Cochran-Mantel-Haenszel to determine the odds of fetal death after prior caesarean section. "We used a much larger data set of 250,000 patients than the British study, which used 16,000 patients," said Bahtiyar. "We were not expecting different results, but we found that prior caesarean section did no...

Researchers find new technique to identify fetal genetic material from amniotic fluid

A preliminary report suggests that cell-free fetal messenger RNA (ribonucleic acid) can be extracted ...information in the article, the authors write that fetal monitoring in the womb is now "limited to noninvasive methods such as measurement of uterine size or...

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(Date:11/5/2014)... de Janeiro, Brazil -Individuals show great diversity in their ... males and females greatly differ in their perceptual evaluation ... of smell tests. , Sex differences in ... behaviors and may be connected to one,s perception of ... emotions. Thus, women,s olfactory superiority has been suggested to ...
(Date:11/4/2014)... CORAL GABLES, Fla. (November 4, 2014) — Think about ... and ask: How do neighboring cells know that they ... cell and how do these tissues find the correct ... (UM) are answering these crucial questions. , In a ... tissues use to communicate with their surrounding neighbors, at ...
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Breaking Biology News(10 mins):The female nose always knows: Do women have more olfactory neurons? 2The inside story: How the brain and skull stay together 2Neurotechnology Places Second in Ongoing MINEX Ranking for Fingerprint Matching Algorithms 2Neurotechnology Places Second in Ongoing MINEX Ranking for Fingerprint Matching Algorithms 3
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