Health & Fitness

Simply remembering events can trigger brain rhythms, even more so than when people are experiencing the actual event, says a new study. The findings could lay foundations for cognitive impairment therapy and help improve memory.

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Researchers have identified two subtypes of human papillomavirus positive head and neck cancers, giving them a better glimpse into why some patients respond better to treatment than others.

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Results of a long-term, federally funded study of cognitively healthy adults -- most with a family history of Alzheimer's disease -- have added to evidence that low spinal fluid levels of a protein linked to learning and memory in mice may serve as an early predictor of mild cognitive impairment (MCI) years before symptoms appear.

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In skin, some aberrant adult epidermal stem cells turn on SOX9, kickstarting a process that ultimately activates cancer genes.

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Scientists appear to have discovered a way to produce a true structure of the rare but naturally-occurring anti-HIV compound Lancilactone C from start to finish. The domino-like reaction enables the total synthesis of lancilactones and related compounds. Its non-cytotoxicity in mammals could potentially make this triterpenoid an ideal candidate for treating AIDS.

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Researchers investigating brain activity in older people say the coordination between neuronal activity and the brain's oxygenation is altered. Non-invasive recording of the function of these neurovascular units in living humans has never been done before, but has now been achieved by using several measurement techniques coupled with novel analysis methods. The results promise a relatively simple and non-invasive method for assessing the state of the brain in healthy aging, and in neurodegenerative disorders such as Alzheimer's disease.

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