Pack, Allan I

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  • Publication
    Exploring Human/Animal Intersections: Converging Lines of Evidence in Comparative Models of Aging
    (2008-01-01) Trojanowski, John Q; Aguirre, Gustavo D; Jedrziewski, Kathryn; Johnson, F. Brad; Hess, Rebecka S; Cancro, Michael P; Sleeper, Margaret M; Pignolo, Robert; Lee, Virginia Man-Yee; Hendricks, Joan C; Pack, Allan I; Davies, Peter F; Michel, Kathryn E; Teff, Karen L; Lawler, Dennis F
    At a symposium convened on March 8, 2007 by the Institute on Aging at the University of Pennsylvania, researchers from the University’s Schools of Medicine and Veterinary Medicine explored the convergence of aging research emerging from the two schools. Studies in human patients, animal models, and companion animals have revealed different but complementary aspects of the aging process, ranging from fundamental biologic aspects of aging to the treatment of age-related diseases, both experimentally and in clinical practice. Participants concluded that neither animal nor human research alone will provide answers to most questions about the aging process. Instead, an optimal translational research model supports a bidirectional flow of information from animal models to clinical research.
  • Publication
    Gene expression profiling of cholinergic neurons from basal forebrain help identify novel sleep-wake regulating pathways
    (2015-01-01) Nikovna, EV; Gilliland, J; Tanis, KQ; Podtelezhnikov, A A; Rigby, A M; Galante, R J; Finney, E M; Stone, D J; Renger, J J; Pack, Allan; Winrow, C J
  • Publication
    Sleep Deprivation Selectively Impairs Memory Consolidation for Contextual Fear Conditioning
    (2003-01-01) Heller, Elizabeth A; Graves, Laurel A; Pack, Allan I; Abel, Ted
    Many behavioral and electrophysical studies in animals and humans have suggested that sleep and circadian rhythms influence memory consolidation. In rodents, hippocampus-dependent memory may be particularly sensitive to sleep deprivation after training, as spatial memory in the Morris water maze is impaired by rapid eye movement sleep deprivation following training. Spatial learning in the Morris water maze, however, requires multiple training trials and performance, as measured by time to reach the hidden platform is influenced by not only spatial learning but also procedural learning. To determine if sleep is important for the consolidation of a single-trial, hippocampus-dependent task, we sleep deprived animals for 0-5 and 5-10 h after training for contextual and cued fear conditioning. We found that sleep deprivation from 0-5 h after training for this task impaired memory consolidation for contextual fear conditioning whereas sleep deprivation from 5-10 h after training had no effect. Sleep deprivation at either time point had no effect on cued fear conditioning, a hippocampus-independent task. Previous studies have determined that memory consolidation for fear conditioning is impaired when protein kinase A and protein synthesis inhibitors are administered at the same time as when sleep deprivation is effective, suggesting that sleep deprivation may act by modifying these molecular mechanisms of memory storage.