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Science News Archive June 2007 - Page 13


Page 13 of 17

Brightening prospects of using fluorescent nanotubes in medical applications

Scientists at Vanderbilt University have overcome a major obstacle in producing fluorescent nanotubes, which can be used as contrast agents in cells and tissues. The breakthrough allows for the creation of trillions of nanotubes with high quantum efficiency, making them suitable for medical applications such as anti-cancer treatments.

SourceVanderbilt University·JournalJournal of the American Chemical Society·DateJun 7, 2007

Dark green blood in the operating theatre

A 42-year-old Canadian patient developed compartment syndrome and underwent emergency fasciotomies, resulting in dark greenish-black blood analysis. Sulfhaemoglobinemia was diagnosed as the cause, linked to excessive sumatriptan intake, a medication containing a sulfonamide group.

SourceThe Lancet_DELETED·JournalThe Lancet·DateJun 7, 2007

Understanding and treating congenital diaphragmatic hernia

Researchers review developmental and genetic basis of CDH, exploring potential treatments using animal models and examining connections to lung and cardiovascular development. Studies find that TO surgery can stimulate fetal lung growth, while genetic mutations in key pathways contribute to the condition.

SourceWiley·JournalAmerican Journal of Medical Genetics·DateJun 7, 2007

Newly found sensing system enables certain bacteria to resist human immune defenses

Researchers at NIAID discovered a survival mechanism in gram-positive bacteria that protects it from antimicrobial peptides, which are defense molecules sent by the body to kill bacteria. The discovery may help chart a path to designing new drugs to bolster our antimicrobial treatment options.

SourceNIH/National Institute of Allergy and Infectious Diseases·JournalProceedings of the National Academy of Sciences·DateJun 7, 2007

Research probes seniors' plans for end-of-life care

A study by Deborah Carr and Dmitry Khodyakov found that education, religious beliefs, and personal experiences with loss are key factors in seniors' decisions to appoint a healthcare proxy. Most people choose a spouse or child as their proxy, but there are also idiosyncratic responses among those outside traditional relationships.

SourceUniversity of Wisconsin-Madison·JournalJournal of Health and Social Behavior·DateJun 6, 2007

Caribbean frogs started with a single, ancient voyage on a raft from South America

A study by Penn State researchers found that nearly all Caribbean land-breeding frog species, including coqui frogs, originated from a single ancient species that rafted on a sea voyage from South America. The discovery challenges previous theories of their arrival and reveals the surprising common ancestry of these species.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateJun 6, 2007

Talcum powder stunts growth of lung tumors

Researchers found that talc stimulates healthy cells to produce endostatin, a hormone that inhibits tumor growth and kills tumor cells. The study reveals talcum powder's potential as a therapeutic agent for metastatic lung cancer, offering new hope for patients with incurable disease.

SourceUniversity of Florida·JournalEuropean Respiratory Journal·DateJun 6, 2007

Surgery by satellite -- New possibilities at medicine's cutting edge

A team of researchers successfully linked surgeons to robots via a 4,000-mile satellite connection, improving the quality of minimally invasive surgery. The study found that virtual reality prediction would greatly aid this type of surgery, paving the way for new efficient healthcare services.

SourceWiley·JournalInternational Journal of Medical Robotics and Computer Assisted Surgery·DateJun 6, 2007

Metabolic syndrome points to heart health

A study found that metabolic syndrome is associated with compromised heart structure and function, including symptomatic heart failure. The association was independent of coronary heart disease risk as predicted by the Framingham risk score for diastolic dysfunction, but not systolic dysfunction.

SourceBMC (BioMed Central)·JournalBMC Cardiovascular Disorders·DateJun 6, 2007

New clues to stroke role in Alzheimer's

Researchers have discovered that stroke or traumatic brain injury can trigger Alzheimer's disease by enhancing the formation of brain-clogging amyloid plaques. Key findings include the role of caspase-mediated depletion of GGA3 in stabilizing BACE and increasing amyloid protein production.

SourceCell Press·JournalNeuron·DateJun 6, 2007

Blocking beta1-integrin to treat cancer

Researchers suggest targeting beta1-integrin to treat cancer by reducing tumour cell proliferation and inducing cellular senescence, potentially preventing metastases. Blocking this protein function in transgenic mice with pancreatic insulinomas resulted in tumour cells becoming senescent and unable to form new tumours.

SourceEMBO·JournalThe EMBO Journal·DateJun 6, 2007

Rutgers: GM/GMO/Biotech crop containment strategy

Researchers at Rutgers University have discovered a new approach to contain genes in genetically modified (GM) crops by implanting them into plastids, minimizing the risk of escape. This innovation has the potential to alleviate concerns about 'foreign genes' contaminating wild species and ecosystems.

SourceRutgers University·JournalProceedings of the National Academy of Sciences·DateJun 6, 2007

Neuronal activity gives clues to working memory

Scientists have discovered a mechanism that can organize the activity of cells involved in short-term recall known as working memory. The study found that inhibitory neurons play a key role in coordinating this process, which could lead to improved treatment options for individuals with schizophrenia.

SourceNewYork-Presbyterian·JournalNature Neuroscience·DateJun 6, 2007

Mystery of 5,000 year old glacier mummy solved

Researchers used CT scans to reveal a close-to-the-shoulder artery lesion in the Iceman, confirming his cause of death as a result of an arrowhead injury. The discovery sheds new light on life conditions in the past and the evolution of diseases.

SourceElsevier·JournalJournal of Archaeological Science·DateJun 6, 2007