Researchers at Johns Hopkins University are testing BufferGel, a vaginal gel that reinforces natural vaginal acidity to kill sperm and germs. The trial aims to evaluate the effectiveness of BufferGel in reducing pregnancy risk when combined with a diaphragm.
Researchers have found that mice with a knocked-out Hoxb8 gene exhibit excessive grooming behavior, creating bald spots and skin wounds. This discovery suggests that Hox genes may regulate behavior in the adult brain, offering potential insights into human obsessive-compulsive disorders.
Researchers analyzed daily weather and mortality data for 11 eastern US cities, finding that mortality risk increased with temperature extremes. Cities in the North were more sensitive to heat, while Southern cities were more vulnerable to cold temperatures.
A study found that the MDR1 gene variation is associated with immune recovery after HIV treatment. The polymorphism MDR1 3435C/T predicts improved CD4-cell count recovery. This suggests P-glycoprotein plays a crucial role in antiretroviral drug absorption.
Researchers at UC Davis have identified a crucial role for sitosterol in starting the process of making cellulose. The study reveals how plant cells spin cotton fibers, providing valuable insights into the textile industry's most valuable crop.
Scientists challenge textbook example of natural selection eliminating variation from closely linked genes; Chromosome 4 has multiple regions with varying levels of recombination. High levels of genetic diversity are found on this previously thought 'non-recombining' chromosome.
A study suggests that H pylori eradication can reduce the risk of peptic ulcers in patients taking non-steroidal anti-inflammatory drugs (NSAIDs). The research found that 90% of patients who underwent H pylori eradication had a significantly lower risk of developing ulcers compared to those on placebo.
Researchers discover tumstatin protein inhibits angiogenesis by targeting a specific integrin molecule, preventing the growth of new blood vessels in tumors. The study provides new insights into the mechanism behind tumstatin's anti-angiogenic effects, paving the way for the development of more effective cancer drugs.
A protein in an insect's antenna picks up chemical signals called pheromones and changes its shape to eject them onto sensitive nerve endings. This discovery could lead to the development of insecticides that prevent insects from detecting other chemical signals, essential for their survival.
The Idaho National Laboratory has identified a promising alternative to waste incineration, known as the "Silver II" method. This process chemically oxidizes molecules at low temperatures and produces no dioxins or low-emission polyaromatic hydrocarbons.
A new study reveals that parrot plumage contains fluorescent pigments that signal sex appeal, attracting mates. Researchers found that applying sunscreen reduced the birds' fluorescence, resulting in a decreased sexual preference.
A longitudinal study of 1791 Brazilian women found that persistent HPV infections increased the risk of squamous intraepithelial lesions (SIL) by 10.2 times compared to those without infection. Women with persistent type 16 or 18 HPV infections had a strong correlation with SIL incidence.
The new section aims to explain the relevance of new research in genetics and molecular biology to practising clinicians. Key findings include associations between genetic sequences and disease, as well as the potential of proteomic analysis to further our understanding.
Scientists have successfully created a crystal of atoms and observed a quantum phase transition, shedding light on fundamental problems in solid-state physics, quantum optics, and atomic physics. By increasing the strength of a microscopic lattice, researchers induced a transition from a superfluid phase to an insulating Mott phase.
Researchers have found that encapsulating molecules within carbon nanotubes can dramatically modify their electronic properties. This discovery could lead to the design of single-molecule-based devices and hybrid nanostructures with tailored electronic functions.
The TIGER experiment is making a groundbreaking second loop around the South Pole to study the origin of cosmic rays. By examining abundance ratios of neighboring elements, scientists aim to determine whether atoms were accelerated individually or as dust grains, and gain insights into supernovas.
Researchers from the University of Missouri-Columbia and Immerge BioTherapeutics Inc. have successfully cloned a miniature swine with a gene knocked out of its DNA. This achievement moves closer to making animal-to-human organ transplantation a reality, offering hope to over 75,000 Americans waiting for organs.
A NASA-funded study is investigating the effects of reduced sleep on astronauts in space, with a focus on finding optimal combinations of anchor sleep and daily naps. The research aims to mitigate cognitive impairments, improve reaction times, and enhance overall well-being among space travelers.
A Japanese study found that front-seat passengers are nearly five times more likely to die in car crashes if rear-seat passengers do not wear seat belts. The researchers estimate that up to 80% of deaths of belted front-seat occupants could be prevented with rear seatbelt use.
A French study found that intravenous immunoglobulin improved platelet counts in adults with AITP. The study also showed that oral steroids and placebo had similar efficacy rates. The researchers suggest judicious observation for patients without severe bleeding and recommend specific immune-based therapies.
A study led by Dr. George Ojemann identified 105 neurons with specific responses to different stages of memory, including encoding, storage, and retrieval. The findings highlight the complexity of individual neurons' role in memory and provide insights into brain regions involved in implicit memory recall.
Researchers at Penn and Illinois have created nanoscale peapods that exhibit tunable electronic properties. By manipulating encapsulated molecules, they can engineer electron motion inside nanotubes in a predictable way.
Researchers have created a new way to calculate 'magic numbers' in sports leagues, taking into account all possible future games. The new method can be applied to multiple sports like hockey and European soccer, providing more accurate predictions of team outcomes.