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Tag: "needed" at biology news

Regenerating worms help elucidate stem cell biology

...y can transform themselves into whatever tissue is needed after injury, be it intestine, skin, or brain. Eve...lity to regenerate -- suggesting that the gene was needed for normal neoblast function. The researchers examined piwi's role more closely, and found th...

Past illegal blood donation in China linked to hepatitis C virus infection

... health priority. "Technical support and drugs are needed to assist these central Chinese provinces cope with the care and treatment needs of HCV patients," the investigators added. In an accompanying editorial, Roger Y. Dodd, PhD, of the American Red Cross noted that the study is "a snapshot of past event...

New amphibian species result from exploration, not from rule changes

...e that "Taxonomic exploration is still desperately needed to avoid misinterpretations in global conservation policy." Köhler and his coauthors reached their conclusions after examining genetic data on a Madagascan frog family, the Mantellidae, that grew from 143 to 203 species between 1992 and 2003. The in...

Researchers offer proof-of-concept for Altered Nuclear Transfer

...isabled in each of these new cells, something that needed to be repaired in order for these cells to be useful. To correct this, Meissner deleted the siRNA molecule by transferring a plasmid into each cell. (A plasmid is a unit of DNA that can replicate in a cell apart from the nucleus. Plasmids are usually...

Sickle cell disease corrected in human models using stem cell-based gene therapy

...e. "An innovative and sophisticated approach was needed to genetically engineer hematopoietic stem cells using a practical and clinically applicable process. The transferred gene must not disrupt the cells' normal functions," explained Isabelle Riviere, PhD, Co-Director of the Gene Transfer and Somatic Ce...

Plant gene related to cancer treatment may foster new oncology drugs

...ons in the opposite direction, providing the boost needed to import the hormone auxin into cells and to increase the amount transported. "With these two studies, we've shown for the first time that both the uptake and release of molecules are mediated by interaction between the PGP transporter proteins and...

Pulp mill devastates swans' sanctuary in Chile

...n from the mill. Further research is also urgently needed to determine the full impact of the pollution on both the environment and human health. A growing citizen's movement has kept case under the spotlight, as never before for an environmental issue in Chile. Although a series of lawsuits and other acti...

2005 AIDS figures released by WHO and UNAIDS

...g, and that far greater HIV prevention efforts are needed to slow the epidemic. Kenya, Zimbabwe and some co...a. An accelerated scale-up of services is urgently needed to reduce this unacceptable toll. Levels of knowledge of safe sex and HIV remain low in many countr...

Earliest European Farmers Left Little Genetic Mark On Modern Europe

...g, and that far greater HIV prevention efforts are needed to slow the epidemic. Kenya, Zimbabwe and some co...a. An accelerated scale-up of services is urgently needed to reduce this unacceptable toll. Levels of knowledge of safe sex and HIV remain low in many countr...

Magnetic probe successfully tracks implanted cells in cancer patients

...vealed that the implanted cells weren't where they needed to be to be effective for treatment," says Jeff Bulte, Ph.D., an associate professor of radiology at Hopkins' Institute for Cell Engineering who developed methods to optimally label cells with the clinically approved iron oxide particles. This new ...

Newly discovered birdlike dinosaur is oldest raptor ever found in South America

...reraptor is rather small, the paleontological team needed 10 days to chisel out the 800-pound slab of rock containing the fossil, which was subsequently prepared at the Museo Argentino de Ciencias Naturales in Buenos Aires and The Field Museum. The fieldwork, in rugged terrain, was supported by funding from...

Deep treasure to be found in Oculina Bank

...s goals is the start of a sustained and critically needed monitoring program to complement , and evaluate the effectiveness of, stricter regulations and enforcement activities in the area. The group will also be exploring new portions of the reef revealed by a recently developed high-resolution seafloor map...

Scientists move forward understanding of schizophrenia

... PDE4B and how that links back to DISC1 sheds much needed light on these debilitating disorders. It also suggests a new way of thinking about developing better and effective medicines." Professor Miles Houslay of the University of Glasgow said: "Over the past few years we've been working hard to help in th...

Katrina floodwaters not as toxic to humans as previously thought, study says

...eafood collected from the region. More studies are needed to assess the long-term impact of the flood on aquatic life, Pardue says. Funding for this study was provided by the Louisiana Water Resources Research Institute and the LSU Center for the Study of Public Health Impacts of Hurricanes. The American ...

Tsunami + 1 year: Reviving exhausted fisheries should trump replacing boats, gear, experts say

...ration, retraining and education programs are much needed to revive severely exhausted fisheries and steer s...eated a window of opportunity to institute reforms needed for the long-term," says Dr. Hall. "Armed with good intentions and awash with money, but without cl...

Researchers quantify more noise in gene expression

...ure the extrinsic-noise floor, a parameter that is needed to create a mathematical algorithm describing gene-expression variation in yeast. "This may sound relatively straightforward: extrinsic variability is due to individual cells growing out of phase with one another," said Hasty. "However, this study i...

New study examines how sense of smell affects mating and aggression in mice

...gulating mating and aggression." More research is needed to understand the role of the olfactory system and human behavior, but clearly this is an important connection for people, according to Shah. "The booming perfume industry attests to our belief that odors can attract potential suitors, and there are...

Clinical trial to test stem cell approach for children with brain injury

...hematopoietic stem cells, which form all the cells needed for blood. Preclinical research indicates that the mesenchymal stem cells play the major role in producing new neurons and support cells. The Center for Cell and Gene Therapy at Baylor College of Medicine will process the bone marrow into the st...

Cells from amniotic fluid used to tissue-engineer a new trachea

...ymal stem cells, that can make many of the tissues needed to perform repairs, Fauza says. While tracheal d...then "seeded" them onto biodegradable tubes of the needed dimensions and shape. The tubes and cells were then exposed to growth factors that caused the mesenc...

Synthetic Protein Eases Arthritis Symptoms in Mice

...PLAD blocks a cell surface receptor and prevents a needed chemical signaling pathway from functioning correctly. In ALPS, the signal pathway interrupted by PLAD leads to disease symptoms. But, the scientists reasoned, PLAD might also be able to block a related cell surface receptor ?one involved in passing ...

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