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Background: Recent studies indicate that enhanced neuronal stress responses are associated with adverse cardiovascular outcomes. A chronic inflammatory state seems to mediate this detrimental neuro-cardiac communication. Statins are among the most widely prescribed medications in primary and secondary cardiovascular disease (CVD) prevention and not only lower lipid levels but also exhibit strong anti-inflammatory and neuroprotective effects. We therefore sought to investigate the influence of statins on neuronal stress responses in a patient cohort at risk for CVD. Methods: 563 patients (61.5 ± 14.0 years) who underwent echocardiography and  18 F-fluorodeoxyglucose ( 18 F-FDG) positron emission tomography (PET) were retrospectively identified. Metabolic activity of the amygdala, a part of the brain’s salience network, was quantified by  18 F-FDG uptake, while normal cardiac morphology and function were assured by echocardiography. Vertebral bone marrow metabolism, a marker of inflammatory activity, was measured by  18 F-FDG PET. Results: Increased neuronal stress responses were associated with an increased inflammatory activity in the bone marrow (r = 0.152,  p  = 0.015) as well as with a subclinical reduction in left ventricular ejection fraction (LVEF, r = −0.138,  p  = 0.025). In a fully-adjusted linear regression model, statin treatment was identified as an independent, negative predictor of amygdalar metabolic activity (B-coefficient −0.171,  p  = 0.043). Conclusions: Our hypothesis-generating investigation suggests a potential link between the anti-inflammatory actions of statins and reduced neuronal stress responses which could lead to improved cardiovascular outcomes. The latter warrants further studies in a larger and prospective population.

Potential Impact of Statins on Neuronal Stress Responses in Patients at Risk for Cardiovascular Disease