Age and gene overexpression interact to abolish nesting behavior in Tg2576 amyloid precursor protein (APP) mice.
Elucidating the modulators of social behavioral is important in understanding the neural basis of behavior and in developing methods to enhance behavior in cases of disorder. The work here stems from the observation that the Alzheimer's disease mouse model Tg2576, overexpressing human mutations of the amyloid-β precursor protein (APP), fails to construct nests when supplied paper towels in their home cages. Experiments using commercially available cotton nesting material found similar results. Additional experiments revealed that the genotype effect is progressively modulated by age in APP mice but not their WT counterparts. There was no effect of sex on nesting behavior in any group. Finally, this effect was independent of ambient temperature - even when subjected to a cold environment, APP mice fail to build nests whereas WT mice do. These results suggest that the APP gene plays a role in affiliative behaviors and are discussed in relation to disorders characteristic of mutations in the APP gene and in affective dysfunction, including Alzheimer's disease.
Wesson
Daniel W
DW
Emotional Brain Institute, Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY 10962, United States. dwesson@nki.rfmh.org
Wilson
Donald A
DA
D000367:Age Factors; D000375:Aging / Q000235:genetics*; D000544:Alzheimer Disease / Q000235:genetics; D016564:Amyloid beta-Protein Precursor / Q000235:genetics*; D000704:Analysis of Variance; D000818:Animals; D004195:Disease Models, Animal; D005260:Female; D008297:Male; D051379:Mice; D008822:Mice, Transgenic; D009425:Nesting Behavior / Q000502:physiology*; D012737:Sex Factors; D013696:Temperature
D016564:Amyloid beta-Protein Precursor
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