More men than women develop Parkinson’s disease and new work presented at the Federation of European Neuroscience Societies says that it is do to sex differences in how brain cells change. Parkinson’s disease affects about 9 million people and becomes increasingly prevalent with age.
RIVERSIDE, Calif. -- A team of researchers, including several from the University of California, Riverside, have found that flowers are a hot spot of transmission of bacteria that end up in the microbiome of wild bees.
The research, which was just published in the journal Microbial Ecology, shows for the first time that multiple flower and wild bee species share several of the same types of bacteria. Bees therefore obtain both food and bacteria from flowers. These bacteria may play important roles in bee health.
A recent review on head lice treatments available in the United States described a marked decline in the effectiveness of permethrin/synergized pyrethrins (collectively pyrethroids), likely due to resistance arising from widespread and indiscriminate use over 30 years.
The review also noted that the potential toxicity of lindane, and the availability of safer and more effective alternatives, should limit its use. Prescription products that are safe and effective include malathion, benzyl alcohol, spinosad, and topical ivermectin.
Home remedies such as petroleum jelly, mayonnaise, and essential oils, have not been demonstrated as safe or effective and may cause adverse reactions.
People with the most common type of lung cancer whose disease has spread to the brain could be spared potentially harmful whole brain radiotherapy, according to new research published in The Lancet. The phase 3 randomized trial found that whole brain radiotherapy had no beneficial effect on length or quality of survival over treatment with steroids and other supportive care.
Despite its widespread use, until now there has been no robust evidence to determine whether whole brain radiotherapy, which can have substantial side effects (eg, fatigue, nausea, neurotoxicity), is better than best supportive care alone in terms of prolonging life or improving quality of life.
A small study presented at the European Respiratory Society International Congress found what you likely knew, if you are old enough to remember when smoking was common; smoking made people thinner.
But the paper says people don't gain weight after while quitting because of oral smoking habits being replaced by eating ones, they speculate about an effect on levels of the hormone ghrelin (also known as the hunger hormone).
Traditional efficacy trials have limited relevance to everyday clinical practice and should be changed, according the authors of a new study into chronic obstructive pulmonary disease (COPD) treatments. The report in the New England Journal of Medicine details a new method of testing effectiveness of drugs which puts the patients' clinical experience at the heart of the process.
Human longevity has been previously linked by researchers to genetic factors, calorie restriction, and certain life-style factors such as physical activity or the Mediterranean diet. Now, Italian researchers from La Sapienza University in Rome have identified an additional factor, which significantly contributes to a longer life. In a pilot study on some of the oldest people of the world, they discovered that the perfusion of organs and muscles of the centenarians was as efficient as that in people who were 30 years younger. Results of the CIAO (Cilento Intitiative on Aging Outcome) pilot study, presented today in the Italian town of Pollica, suggest that low blood levels of the peptide hormone Adrenomedullin (bio-ADM) are an indicator for such a good microcirculation.
A peptide and its receptors work to regulate auxin response and control leaf tooth growth in plants.
The plant hormone auxin has been known to take part in the development of leaf teeth, but the exact mechanism of their formation has been a mystery up till now. In this study, the research group has found that a peptide called EPIDERMAL PATTERNING FACTOR-LIKE 2 (EPFL2) and its receptor protein, ERECTA family receptor kinases, control the amount of auxin during leaf tooth growth. In plant leaves where the EPFL2 peptide is inactive, the leaf becomes round without teeth.
COLUMBIA, SC - Antibiotic treatment within the first year of life may wipe out more than an unwanted infection: exposure to the drugs is associated with an increase in food allergy diagnosis, new research from the University of South Carolina suggests.
With nearly sixty percent of American adults now taking prescription medications--from antidepressants to cholesterol treatments--there is growing concern about how many drugs are flowing through wastewater treatment facilities and into rivers and lakes. Research confirms that pharmaceutical pollution can cause damage to fish and other ecological problems--and may pose risks to human health too.
Scientists have assumed that people flushing their unused medications down the drain or toilet was a major source of these drugs in the water.
But a new first-of-its-kind study tells a different story.
Scientists have revealed molecular differences between how the African and Asian strains of Zika virus infect neural progenitor cells.
The results could provide insights into the Zika virus' recent emergence as a global health emergency, and also point to inhibitors of the protein p53 as potential leads for drugs that could protect brain cells from cell death.
The findings, from the Emory/Johns Hopkins/Florida State team that showed this spring that neural progenitor cells are particularly vulnerable to Zika infection, were published in Nucleic Acid Research. The paper was also posted on BioRxiv before publication.
ANN ARBOR, Mich. -- Dying in America is an expensive process, with about one in four Medicare dollars going to care for people in their last year of life. But for African Americans and Hispanics, the cost of dying is far higher than it is for whites.
And despite years of searching for the reason, no one has quite figured out why.
A new study by a University of Michigan Medical School team tried to get to the bottom of this expensive mystery with the most detailed study to date. The team published their findings today in the Journal of the American Geriatrics Society.
An Umeå-based team in collaboration with US researchers reveals a new link between nicotine and inflammation. They report that nicotine strongly activates immune cells to release DNA fibres decorated with pro-inflammatory molecules, so called neutrophil extracellular traps (NETs). The continuous exposure to these NETs can harm the tissue and could explain the hazardous consequences of tobacco consumption for human health.
