809,072 articles

Oceanographers examine mercury levels of pelagic fish in Hawaii

In the open ocean, species of large predatory fish will swim and hunt for food at various depths, which leads to unique diets in these fish. Oceanographers and geologists in the School of Ocean and Earth Science and Technology (SOEST) at the University of Hawaiʻi at Mānoa (UHM) and colleagues have found that those fish that hunt deeper in the open ocean have higher mercury concentrations...

Over time, an invasive plant loses its toxic edge

Like most invasive plants introduced to the U.S. from Europe and other places, garlic mustard first found it easy to dominate the natives. A new study indicates that eventually, however, its primary weapon - a fungus-killing toxin injected into the soil - becomes less potent.

Scientists find genetic marker associated with ovarian cancer risk

A new genetic marker associated with ovarian cancer risk was recently discovered by an international research group, led by scientists from the Cancer Research Genetic Epidemiology Unit in the United Kingdom. Drs. Marc Goodman, Galina Lurie, Michael Carney, and Keith Terada of the University of Hawai'i at Mānoa's Cancer Research Center of Hawai'i participated in the validation of the...

Spacewalkers tackle hefty tank removal in space

(AP) -- A pair of spacewalkers tackled a hefty tank removal job at the international space station Tuesday as their crewmates unloaded comedian Stephen Colbert's namesake treadmill for all "those famously fat astronauts."

Caring for the whole person -- using systems medicine

At a time when medicine tends to focus on patients as a "collection of visceral organs and a nervous system," systems medicine provides a new approach to medical practice that is "anticipated to result in more comprehensive and systematic patient care." In a commentary published today in the Journal of the American Medical Association (Sept 2), Howard J. Federoff, MD, PhD, executive vice...

Computational process zeroes in on top genetic cancer suspects

Johns Hopkins engineers have devised innovative computer software that can sift through hundreds of genetic mutations and highlight the DNA changes that are most likely to promote cancer. The goal is to provide critical help to researchers who are poring over numerous newly discovered gene mutations, many of which are harmless or have no connection to cancer. According to its inventors, the new...

Exercise alone shown to improve insulin sensitivity in obese sedentary adolescents

A moderate aerobic exercise program, without weight loss, can improve insulin sensitivity in both lean and obese sedentary adolescents, according to a new study accepted for publication in The Endocrine Society's Journal of Clinical Endocrinology & Metabolism (JCEM). Insulin is a hormone produced in the pancreas that permits glucose to enter cells to be used for energy or stored for future use by...

New report describes types of research conducted at academic medical centers

A study from the Massachusetts General Hospital (MGH) Institute for Health Policy gives the first detailed look at the types of research currently being conducted within U.S. academic medical centers - medical schools and their affiliated hospitals. The report in the Sept. 2 Journal of the American Medical Association describes how the traditional way of categorizing life-science researchers as...

New study compares after-hours and daytime surgery success rates

Patients who have after-hour orthopaedic surgeries risk a slightly higher rate of necessary follow-up surgeries, according to a study published in the September 2009 issue of The Journal of Bone and Joint Surgery (JBJS). The data also suggests that patients whose surgeries took place during the day have the same healing, recovery time, and major complication rates as patients who have surgery...

Researchers use newborn blood data to study cerebral palsy

A statewide team of researchers led by a Michigan State University epidemiologist are hoping Michigan's archive of newborn blood spots will help them uncover the causes of cerebral palsy, the most common disabling motor disorder in children with annual health costs of $12 billion.