Health News

Friday, June 20, 2014 - 12:08

 Cancers driven by – and dependent on – the potent mutated cancer gene KRAS have an especially poor prognosis, and three decades of scientific attempts have failed to produce drugs that can attack KRAS and halt the tumors’ runaway growth.

Monday, June 16, 2014 - 21:04

 The DNA in a pluripotent stem cell is bombarded with waves of proteins whose ebb and flow nudge the cell toward becoming blood, bone, skin or organs. A new theory by scientists at Rice University shows the cell’s journey is neither a simple step-by-step process nor all random.

Monday, June 16, 2014 - 20:29

Researchers at the University of California, San Diego School of Medicine have completed the first comprehensive survey of e-cigarettes for sale online and the results, they believe, underscore the complexity in regulating the rapidly growing market for the electronic nicotine delivery devices.

Monday, June 16, 2014 - 20:23

A new study has found that use of a wearable ‘bionic’ pancreas improved mean blood glucose levels and reduced frequency of hypoglycemia compared to using fingerstick tests and insulin delivery via a pump. The NIH-funded study from researchers in Harvard Medical School and Massachusetts General Hospital and Boston University appears in the New England Journal of Medicine.

Sunday, June 15, 2014 - 20:00

Scientists from the Broad Institute and Massachusetts General Hospital (MGH) have conducted a first-of-its-kind study that characterizes the cellular diversity within glioblastoma tumors from patients. The study, which looked at the expression of thousands of genes in individual cells from patient tumors, revealed that the cellular makeup of each tumor is more heterogeneous than previously suspected. The findings, which appear online in Science Express, will help guide future investigations into potential treatments for this devastating disease.

Sunday, June 15, 2014 - 19:31

A team of European scientists has now extended a previous biophysical model to investigate elongated growth within biological tissues by describing the evolution over time of the shape of a fruit fly’s wing. They found the aspect ratio of the typical biological shapes may exhibit a maximum at finite time and then decrease. For sufficiently large tissues, the shape is expected to approach that of a disk or sphere. These findings have been reported by Carles Blanch-Mercader from the University of Barcelona, Spain, and colleagues, in a paper published in EPJ E. They provide a more general classification than previously available of the different types of morphologies a tissue can be expected to attain, depending on its initial size and its physical properties.