A study found that a testosterone skin patch can relieve impaired sexual functioning in surgically menopausal women. The patch restored normal testosterone levels, leading to improved sexual activity and pleasure, as well as overall psychological well-being. Adverse side effects were minimal.
A new mathematical model links El Niño cycles to cholera outbreaks, with a consistent 3.7-year frequency in both ENSO events and cholera cases. The study suggests an 11-month time lag between ENSO events and peak cholera incidence, likely due to increased sea-surface temperatures and bacteria-bearing zooplankton.
Scientists have assembled a 150-year lake and river ice record spanning the Northern Hemisphere, showing a steady warming trend. The average rate of change over the 150-year period was 8.7 days later for freeze dates and 9.8 days earlier for breakup dates.
A new study documents very warm sea surface temperatures in the western Pacific about 400,000 years ago, which supports the hypothesis that the tropics is a key player in global climate change. The analysis provides valuable insights into past temperature shifts and could aid numerical modelers in predicting future warming.
A new UCSF study reveals that while combination antiretroviral therapy has improved patient outcomes, it also creates uncertainty and anxiety among healthcare providers. The researchers found that providers are struggling to make informed decisions due to a lack of resources and limited information on patient adherence.
The MACE-II experiment, launched on September 8 aboard the space shuttle Atlantis, will test techniques for predicting motion and controlling vibrations in zero gravity. With multiple months of testing, researchers will interact with the experiment remotely to refine its performance.
Researchers at the University of Rochester have developed a new mouse model that mimics symptoms of myotonic dystrophy, allowing for potential treatments to be tested. The mice provide insight into the disease-causing role of mRNA and its impact on muscle fibers.
Scientists have found that the tropical Pacific Ocean played a key role in driving past ice ages, cooling by at least 3 degrees Celsius during each of the last five ice ages. This discovery challenges the long-held theory that high latitude and North Atlantic processes were the primary drivers of climate change.
The study reveals that a catastrophic global die off of vegetation led to the rapid transformation of river systems from meandering to braided streams. This shift, occurring at the end of the Permian Period and the beginning of the Triassic, was accompanied by massive extinctions of marine and land vertebrate species.
A new study published in the New England Journal of Medicine found that a testosterone patch improved sexual function and psychological well-being in surgically postmenopausal women. The study showed that treatment with higher doses of testosterone substantially improved outcomes, while lower doses had less effect.
Researchers at the University of Toronto have isolated a key protein involved in the degeneration of nerve cells in Alzheimer's disease. The newly discovered protein, nicastrin, regulates the production of amyloid beta-peptide, a toxic derivative associated with the disease.
Researchers at Northwestern University have developed a novel DNA detection method that is more accurate, less expensive, and easier to use than conventional methods. The scanometric DNA array detection method uses gold nanoparticles and a flatbed scanner to detect target DNA with high sensitivity and selectivity.
The NIH has awarded a $6 million per year grant to create the Women's Health Interdisciplinary Scholarship Program for Research, aiming to increase quality research in women's health. The program will provide salary support, coursework, and mentoring to junior faculty-clinical researchers.
A team of biologists led by Carl E. Bauer have determined that non-oxygen-producing bacterial species such as purple and green bacteria are the most ancient photosynthetic bacteria. This finding reverses conventional thinking on the evolution of photosynthetic bacteria, suggesting a complex evolutionary history.