News Round-Up: July 2009 3rd Edition

News in Brief

In an interesting prospective study in older adults (n=49), MRI white matter hyperintensities were associated with a significant risk of developing dementia and the researchers correlated the volume of these lesions with the risk of developing dementia. A number of findings in Alzheimer’s Disease Research were reported at the British Pharmacological Society’s Summer Meeting in Edinburgh including evidence of a protective effect of flavinoids against the neurotoxic effects of Beta-Amyloid plaques. The REVEAL study provides evidence that disclosing information about APOE4 carrier-status to children of parents with Alzheimer’s Disease does not result in significant short-term psychological distress. A receptor has been found in the basal forebrain which responds to ABeta Protein in Amyloid plaques and may be related to the effects of plaques on acetylcholine levels. A recent Cochrane review looked at interventions for reducing alcohol misuse in university students and the authors examined 22 controlled trials with a cumulative total of 7275 college students finding that web-based/computer feedback was associated with a significant reduction in a number of outcome measures including drinking frequency, quantity, binge drinking and peak blood alcohol content. Patterns of substance misuse are being studied in Oregon, USA by analysing waste water before it is treated.  A small fMRI study provided preliminary evidence that improvement in multitasking through training is associated with changes in activity in the posterior prefrontal cortex. A small study has provided initial evidence of a significant association between performance on a smell-test and response to Donepezil according to clinical impression in people with mild-to-moderate Alzheimer’s Disease. A study of young-onset dementia (n=235) found a high prevalence of psychiatric and behavioural disorders. A prospective study looking at people with Alzheimer’s Disease found a significant association between the use of antihypertensive medications and a lower rate of cognitive decline and higher MMSE scores at baseline even after controlling for blood pressure.

The authors of another Cochrane review concluded that there was insufficient evidence at this point to recommend the combination of Clozapine with another antipsychotic for treatment-resistant schizophrenia. In another Cochrane review which included data from 11 randomised-controlled trials with a cumulative total of 2441 adults identified as heavy drinkers, the authors found benefits for brief interventions with a reduction in alcohol consumption at 1-year follow-up although there weren’t found to be benefits for self-reported alcohol consumption and number of binges. In another Cochrane review there was found to be a significant benefit for the use of TCA’s or SSRI’s in the treatment of depression in primary care in adults (under the age of 65) based on analysis of 14 studies comparing TCA’s or SSRI’s with placebo with a cumulative total of 2283 participants*. In a study looking at prevalence of dementia in later life in low and middle-income countries and involving data from 14, 960 participants there was found to be a significant and inverse relationship between fish consumption and prevalence of dementia in later life. Another study didn’t show a benefit of DHA in mild-to-moderate Alzheimer’s Disease  on the ADAS-Cog after 18 months of treatment although another study did show a benefit for older adults with mild memory impairment Evidence for a possible role of fibroblast growth factor (Ffg) in development of the frontal cortex through radial glial cells was provided in one study and there is the suggestion that alterations in the Ffg may have a significant influence on the size of the frontal cortex in humans. In a series of recent studies a large number of acetylation switches(3600) have been found in a similarly large number of proteins (1750) which may be of relevance to a number of diseases and it will be interesting to see the results of subsequent research based on these results. A new ultrasound tool which samples at 125 Hz is being used in attempt to better classify African click languages. New radiocarbon dating, dates human remains in Gough’s Cave, Somerset to 14,700 years ago while a female Gibbon has been observed to slam a metal door in way which accentuated her territorial song suggesting a distant beginning for the use of percussion.

* The authors note that a number of the trials were funded by pharmaceutical companies.

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Disclaimer

The comments made here represent the opinions of the author and do not represent the profession or any body/organisation. The comments made here are not meant as a source of medical advice and those seeking medical advice are advised to consult with their own doctor. The author is not responsible for the contents of any external sites that are linked to in this blog.

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