Original ArticlesRecognition Memory and β-amyloid Plaques in Adult Tg2576 Mice are not Modified After Oral Exposure to AluminumRibes, Diana PhD*,†; Torrente, Margarita PhD*,†; Vicens, Paloma PhD*,†; Colomina, Maria Teresa PhD*,†; Gómez, Mercedes PhD†; Domingo, José L. PhD†Author Information *Department of Psychology and Research Center for Behavioral Assessment (CRAMC), Universitat “Rovira i Virgili” Sescelades Campus, Tarragona, Catalonia †Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat “Rovira i Virgili” Sant Llorenç, Reus, Catalonia, Spain This research was supported by the “Fondo de Investigación Sanitaria-FIS” through grant number PI041673. The authors declare no conflict of interest. Reprints: Margarita Torrente, PhD, Psychobiology Unit, Department of Psychology, Universitat “Rovira i Virgili” Sescelades Campus, 43007 Tarragona, Catalonia, Spain (e-mail: email@example.com). Received January 21, 2011 Accepted April 8, 2011 Alzheimer Disease & Associated Disorders: April-June 2012 - Volume 26 - Issue 2 - p 179-185 doi: 10.1097/WAD.0b013e3182211ab1 Buy Metrics Abstract The role of aluminum (Al) in Alzheimer disease is highly controversial. However, this element has been detected in neuritic plaques and neurofibrillary tangles in patients with Alzheimer disease. Its presence in neuritic plaques in hippocampus is especially relevant, as this is an area closely related to spatial learning and memory. In this study, the diet of wild-type and Tg2576 mice (animals overexpressing the human amyloid precursor protein) was supplemented with Al lactate (1 mg/g). General neurotoxic Al effects were evaluated using a functional observational battery and a novel object recognition task. Four experimental groups were used: Control-wild, Al-wild, Control-Tg, and Al-Tg mice. The results show a decreased home-cage activity and an increase in piloerection in all Al-exposed animals, and an increased sensorimotor reactivity in Tg2576 mice given Al. Neither Al treatment nor genotype had any noticeable effect on corticosterone levels and Al concentrations in frontal cortex and cerebellum of the mice. Recognition memory was impaired in Tg2576 mice, whereas β-amyloid plaque depositions were observed in all these animals. However, Al did not alter the recognition memory and β-amyloid plaque loads of Tg2576 mice. © 2012 Lippincott Williams & Wilkins, Inc.