RESUMEN
Spatial learning and memory have been shown to be especially vulnerable to aging and alcohol consumption. However, moderate consumption of wine has been linked to decreases in incidences of dementia. Resveratrol, a phytoestrogen found in wine, has been shown to have neuroprotective effects against the oxidative stress of ethanol. In this study, middle-aged C57BL/6N female mice given a combination of resveratrol (44.2 mg/kg) and a low amount of ethanol (0.71 g/kg) each day for 6 weeks performed better on the Barnes maze task for spatial learning and memory than mice consuming only the low concentration of ethanol. The results suggest that resveratrol may protect hippocampal-dependent spatial learning from the negative effects of ethanol. However, the resveratrol-ethanol combination did not provide any additional benefit to counter aging-related deficits.
Asunto(s)
Antioxidantes/farmacología , Etanol/farmacología , Aprendizaje/efectos de los fármacos , Percepción Espacial/efectos de los fármacos , Conducta Espacial/efectos de los fármacos , Estilbenos/farmacología , Envejecimiento , Animales , Antioxidantes/administración & dosificación , Femenino , Aprendizaje por Laberinto/efectos de los fármacos , Memoria/efectos de los fármacos , Ratones , Ratones Endogámicos C57BL , Resveratrol , Estilbenos/administración & dosificaciónRESUMEN
Neuroinflammation induced during immune responses to viral infections in the brain affect behavior. Unexpected evidence that oral gavage of an algal virus in its host algal cells could alter cognition was further examined by directly injecting purified algal virus ATCV-1 intracranially into C57BL/6 mice. After 4weeks, the ATCV-1 infection impaired delayed location recognition memory, and also reduced and anxiety. Corresponding to these effects, heightened ATCV-1, IL-6, iNOS, IFN-γ, and CD11b expression in brains was observed 3-days and/or 8-weeks post infection compared with control mice. These results imply that ATCV-1 infection damages the hippocampus via induction of inflammatory factors.