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Tag: "designed" at biology news

Stem cell therapy shows promise in regenerating damaged muscle in heart attack patients

...sed when they are needed." Adult stem cells are designed by nature to perform tissue repair in a mature adult. It is believed that these cells can be used in patients unrelated to the donor, without rejection, eliminating the need for donor matching and recipient immune suppression. Once transplanted, the ...

Many couples choose to donate surplus embryos for stem cell research

...search 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 couples, who had undergone IVF at least 3 years earlier, were presented with four options for the fate ...

Creating new life forms that may help eradicate cancer affecting women

...eports that because the human immune system is not designed to fight cancer on its own, she and her colleagues are trying to harness its power through a new kind of life form: specifically a family of vaccines, which they call Lovaxin. The vaccines are comprised of new strains of bacteria created in Advaxis'...

Scientists reveal structure of gateways to gene control

...f the nucleosome spool will help to focus research designed to manipulate gene expression. "Our study has provided a much clearer picture of the architecture of the DNA in the control regions, allowing us to understand much better how genes are regulated, which is important because gene regulation is a criti...

Widely used iron nanoparticles exhibit toxic effects on neuronal cells

...erials directly to a tumor. Magnetic nanoparticles designed to attach to cancerous tissue can also be made to heat up by using a remote, alternating magnetic field, thereby selectively killing cancer cells in a process called magnetic hyperthermia. Many researchers throughout the world are also studying t...

100 percent juices found as beneficial to health as fruits and vegetables

... This conclusion is the result of a European study designed to question traditional thinking that 100 percent ...h this independent review of the literature is not designed to focus on any particular 100 percent juice, it does go a long way in demonstrating that fruit and ...

New research shows why too much memory may be a bad thing

...o working memory. To examine this hypothesis, they designed working memory tests for two independent groups of mice in which neurogenesis in the hippocampus regions was suppressed. Results of the tests, in which mice had to locate food within specific areas of a maze, showed that mice in which neurogenesis ha...

'Exercise pill' switches on gene that tells cells to burn fat

By giving ordinary adult mice a drug - a synthetic designed to mimic fat - Salk Institute scientist Dr. Ronald M. Evans is now able to chemically switch on PPAR-d, the master regulator that controls the ability of cells to burn fat. Even when the mice are not active, turning on the chemical switch activates ...

Breathing easy: When it comes to oxygen, a bug's life is full of it

...e concluded that the insects?respiratory system is designed to deliver large amounts of oxygen while they are active. The drawback is that, when they are at rest, this level of oxygen is toxic, he has theorized. Insects close their spiracles during rest to avoid an overdose of oxygen, which can result in the ...

MIT device draws cells close -- but not too close -- together

... This idea quickly evolved into an elegant tool designed expressly for biologists. The device involves two separate comb-shaped pieces coated with living cells. These two pieces can click into place at two settings: One allows cells on the edges of the combs to touch, the other maintains a gap of 80 mi...

Widely used hepatitis B drug spurs HIV drug resistance

... and thus evade or develop resistance to therapies designed to stop its action. Similar testing with entecavir, immune cells and the M184V form of HIV showed that the drug did not stop the virus from infecting the cells. This provided evidence, scientists say, that the drug specifically fostered develop...

Dig deeper to find Martian life

Probes designed to find life on Mars do not drill deep enough to find the living cells that scientists believe may exist well below the surface of Mars, according to research led by UCL (University College London). Although current drills may find essential tell-tal...

Something new under the sun

...hing new. Dutch researcher Rachel van Ooteghem has designed a control system for an improved solar greenhouse ... as possible for optimum crop growth. Van Ooteghem designed an optimal control system for a solar greenhouse with an improved roof cover, heat regulation system...

Temple University Hospital investigates treatment for cervical dysplasia

...including Philadelphia. "This product candidate is designed to enhance the body's immune response to cervical dysplasia, and is being developed to offer patients with cervical dysplasia and healthcare providers an option to surgical intervention," explained Hernandez. "Qualified participants must be 25 or you...

End-of-life care can be improved

...d be used to evaluate the success of interventions designed to improve end-of-life care in the ICU. Dr. Levy notes that this supplement documents a need for additional research and quality improvement in order to realize the potential for improving the care delivered to critically ill patients at the end o...

Early-stage immune system control of HIV may depend on inherited factors

... infection challenging. The current study was designed to determine the contribution of both HLA Class I and the particular viral fragments displayed on those molecules to the activation of HIV-specific CD8 cells. The researchers analyzed blood samples from more than 100 people recently infected with HI...

UCSF study will test new vaginal microbicide for herpes and HIV

...st U.S. study of the safety of a new a vaginal gel designed to prevent herpes and HIV infection. If it is eff...in the United States and worldwide." The gel is designed to prevent herpes and HIV infection through the use of a molecule called a dendrimer. Dendrimers hav...

Math model predicts cancer behavior

...for the group are in vitro and in vivo experiments designed to test, validate and refine the mathematical model. ...

'Super' enzyme may lead way to better tumor vaccines

...develop the super form of Akt1. Using specially designed adenoviruses, he and his colleagues put the modified "super" Akt1 molecule into the dendritic cells. "As predicted, these dendritic cells lived longer and were more potent, both in the laboratory and in mice," he said. "It led to the elimination o...

Researchers seek to design first treatment for neuroAIDS

...ants from the National Institutes of Mental Health designed to convert basic neuroscience into new neuroAIDS drugs. Based on their work, Stephen Dewhurst, Ph.D., dean's professor of Microbiology and Immunology at the Medical Center, recognized that a second molecular target, an enzyme called mixed lineage ki...

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