Brightsurf Science News & Current Events

July 22, 2012
New genomic sequencing method enables 'smarter' anaysis of individual cells
Research published in the July 22 issue of Nature Biotechnology, shows for the first time that a novel genomic sequencing method called Smart-Seq can help scientists conduct in-depth analyses of clinically relevant single cells.

Benefits of HIV drugs rise -- but less than previously believed, Penn study shows
The percentage of HIV patients taking antiretroviral drugs who experienced the full benefit of the drugs jumped from 45 percent of 72 percent during the past decade, a figure that is lower than previous estimates.

Among new HIV treatment recommendations, all adult patients should be offered antiretroviral therapy
Included in the 2012 International Antiviral Society-USA panel recommendations for human immunodeficiency virus patient care is that all adult patients, regardless of CD4 cell count, should be offered antiretroviral therapy.

Clinical study in rural Uganda shows high demand for antiretroviral drugs
An ongoing clinical study in rural Uganda, begun in 2011, suggests that many people infected with HIV/AIDS would take antiretroviral drugs if they were available to them -- even before they developed symptoms from the disease.

Pre-season fitness makes no difference to risk of injury
But the type of sport played and gender did, according to a new study published in BioMed Central's open-access journal Sports Medicine, Arthroscopy, Rehabilitation, Therapy & Technology.

HPV testing in HIV-positive women may help reduce frequent cervical cancer screening
Compared to the general population, HIV-positive women have a high risk of cervical cancer and thus are advised to undergo more frequent screening tests.

Key mutations discovered for most common childhood brain cancer
Researchers at Dana-Farber/Children's Hospital Cancer Center (DF/CHCC) linked mutations in specific genes to four subtypes of medulloblastoma, the most common malignant brain tumor of children.

Embargoed news from Annals of Internal Medicine
Below is information about articles being published in the July 22 issue of Annals of Internal Medicine.

Study examines characteristics, risk factors among HIV-positive persons born outside the US
An examination of the characteristics of persons born outside the United States diagnosed with HIV while living in the US finds that, compared to US-born persons with HIV, they are more likely to be Hispanic or Asian, and to have a higher percentage of HIV infections attributed to heterosexual contact.

Dark energy and fate of the Universe
Dark energy, which makes up about 70 percent of the current content of the Universe, will determine the ultimate fate of our Universe.

Lighting up the plant hormone 'command system'
Light is not only the source of a plant's energy, but also an environmental signal that instructs growth.

New clues to the early Solar System from ancient meteorites
In order to understand Earth's earliest history -- its formation from Solar System material into the present-day layering of metal core and mantle, and crust -- scientists look to meteorites.

HIV suppression not as good as previously thought, largest study of viral-load blood tests show
Tens of thousands of Americans taking potent antiretroviral therapies, or ART, to keep their HIV disease in check may not have as much control over the viral infection as previous estimates have suggested, according to results of a study by AIDS experts at Johns Hopkins and the University of Pennsylvania.

Artificial jellyfish swims in a heartbeat
A team of researchers at Harvard University and the California Institute of Technology have turned inanimate silicone and living cardiac muscle cells into a freely swimming

Printed photonic crystal mirrors shrink on-chip lasers down to size
Electrical engineers at the University of Texas at Arlington and at the University of Wisconsin-Madison have devised a new laser for on-chip optical connections that could give computers a huge boost in speed and energy efficiency.

Medusa reimagined: Caltech-led team reverse engineers a jellyfish with the ability to swim
When one observes a jellyfish pulsating through the ocean, Greek mythology probably doesn't immediately come to mind.

Scientists call for increased surveillance as study assessing HIV drug resistance shows rising rates in some areas of Africa
New research published online first in the Lancet suggests that drug-resistant HIV has been increasing in parts of Sub-Saharan Africa since the roll-out of antiretroviral therapy nearly a decade ago.

For gay couples, condom decision-making and condom use varies by race
Black gay couples tend to practice safe sex but don't talk about it, while white gay couples discuss safety but are less likely to use condoms, according to new findings presented at the 19th International AIDS Conference.

New method for associating genetic variation with crop traits
A new technique developed at the John Innes Centre will allow plant breeders to introduce valuable crop traits even without access to the full genome sequence of that crop.

American Chemical Society's highest honor goes to pioneer of 'Lego-like' molecules
Peter J. Stang, Ph.D., distinguished professor of chemistry at the University of Utah and editor of the Journal of the American Chemical Society, has been named winner of the 2013 Priestley Medal by the American Chemical Society.

HIV-infected women do not appear to be at increased risk of cervical cancer
HIV-infected and uninfected women with normal cervical cytology and a negative test result for oncogenic (tumor inducing) human papillomavirus DNA at study enrollment had a similar risk of cervical precancer and cancer after five years of follow-up.

Study offers new clue on how brain processes visual information
Ever wonder how the human brain, which is constantly bombarded with millions of pieces of visual information, can filter out what's unimportant and focus on what's most useful?

Genetic mutations that cause common childhood brain tumors identified
Researchers at the Stanford University School of Medicine and Lucile Packard Children's Hospital have identified several gene mutations responsible for the most common childhood brain tumor, called medulloblastoma, adding evidence to the theory that the diagnosis is a group of genetically distinct cancers with different prognoses.

Working toward an AIDS-free generation
Ending the global HIV/AIDS pandemic may be possible by implementing a multifaceted global effort that expands testing, treatment, and prevention programs, as well as meets the scientific challenges of developing an HIV vaccine and possibly a cure.

Increased cardiovascular risk in HIV-infected patients may relate to arterial inflammation
The elevated risk of cardiovascular disease seen in patients infected with HIV appears to be associated with increased inflammation within the arteries, according to a study from Massachusetts General Hospital researchers.
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