Our study suggests that the -308 (G/A) polymorphism in the TNF-alpha gene could play a role in determining susceptibility to MD. An activation of the TNF-alpha system could contribute to the development of MD in the elderly.
Adenosine suppresses immune responses through the adenosine A2A receptors (A2AR). We evaluated the expression of A2AR in blood mononuclear cells (PBMCs) of patients with mild cognitive impairment (MCI), Alzheimer's disease (AD), and controls in order to verify if it may help distinguish different forms of cognitive decline. There was a significant linear increase in both mRNA levels and receptor density from multiple cognitive domain MCI (mcd-MCI) to amnestic MCI (a-MCI), spanning through AD and controls, without any significant difference between the latter two groups of subjects. These data, which need to be confirmed in a larger number of patients, suggest that expression of A2AR in PBMCs may be a valuable means of differentiating a-MCI and mcd-MCI.
Our data suggest that, in the elderly, inflammation-associated polymorphisms are related to atherogenesis and that the finding of ACP on US scan can be valuable in identifying subjects at risk for CV events, even if they lack traditional cardiovascular risk factors such as an increase in IMT.
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