{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,1]],"date-time":"2026-04-01T20:22:33Z","timestamp":1775074953732,"version":"3.50.1"},"reference-count":49,"publisher":"Proceedings of the National Academy of Sciences","issue":"18","content-domain":{"domain":["www.pnas.org"],"crossmark-restriction":true},"short-container-title":["Proc. Natl. Acad. Sci. U.S.A."],"published-print":{"date-parts":[[2004,5,4]]},"abstract":"<jats:p>The hippocampal formation contains a distinct population of neurons organized into separate anatomical subregions. Each hippocampal subregion expresses a unique molecular profile accounting for their differential vulnerability to mechanisms of memory dysfunction. Nevertheless, it remains unclear which hippocampal subregion is most sensitive to the effects of advancing age. Here we investigate this question by using separate imaging techniques, each assessing different correlates of neuronal function. First, we used MRI to map cerebral blood volume, an established correlate of basal metabolism, in the hippocampal subregions of young and old rhesus monkeys. Second, we used<jats:italic>in situ<\/jats:italic>hybridization to map Arc expression in the hippocampal subregions of young and old rats. Arc is an immediate early gene that is activated in a behavior-dependent manner and is correlated with spike activity. Results show that the dentate gyrus is the hippocampal subregion most sensitive to the effects of advancing age, which together with prior studies establishes a cross-species consensus. This pattern isolates the locus of age-related hippocampal dysfunction and differentiates normal aging from Alzheimer's disease.<\/jats:p>","DOI":"10.1073\/pnas.0400285101","type":"journal-article","created":{"date-parts":[[2004,4,27]],"date-time":"2004-04-27T00:54:03Z","timestamp":1083027243000},"page":"7181-7186","update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":233,"title":["Imaging correlates of brain function in monkeys and rats isolates a hippocampal subregion differentially vulnerable to aging"],"prefix":"10.1073","volume":"101","author":[{"given":"Scott A.","family":"Small","sequence":"first","affiliation":[{"name":"Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Center for Neurobiology and Behavior, and Department of Neurology, Columbia University College of Physicians and Surgeons, New York, NY 10032; Kastor Neurobiology of Aging Laboratories and Fishberg Research Center for Neurobiology, Mount Sinai School of Medicine, New York, NY 10029; and Department of Psychology and Neurology and Arizona Research Laboratory Division of Neural Systems Memory and Aging, University of Arizona,..."}]},{"given":"Monica K.","family":"Chawla","sequence":"additional","affiliation":[{"name":"Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Center for Neurobiology and Behavior, and Department of Neurology, Columbia University College of Physicians and Surgeons, New York, NY 10032; Kastor Neurobiology of Aging Laboratories and Fishberg Research Center for Neurobiology, Mount Sinai School of Medicine, New York, NY 10029; and Department of Psychology and Neurology and Arizona Research Laboratory Division of Neural Systems Memory and Aging, University of Arizona,..."}]},{"given":"Michael","family":"Buonocore","sequence":"additional","affiliation":[{"name":"Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Center for Neurobiology and Behavior, and Department of Neurology, Columbia University College of Physicians and Surgeons, New York, NY 10032; Kastor Neurobiology of Aging Laboratories and Fishberg Research Center for Neurobiology, Mount Sinai School of Medicine, New York, NY 10029; and Department of Psychology and Neurology and Arizona Research Laboratory Division of Neural Systems Memory and Aging, University of Arizona,..."}]},{"given":"Peter R.","family":"Rapp","sequence":"additional","affiliation":[{"name":"Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Center for Neurobiology and Behavior, and Department of Neurology, Columbia University College of Physicians and Surgeons, New York, NY 10032; Kastor Neurobiology of Aging Laboratories and Fishberg Research Center for Neurobiology, Mount Sinai School of Medicine, New York, NY 10029; and Department of Psychology and Neurology and Arizona Research Laboratory Division of Neural Systems Memory and Aging, University of Arizona,..."}]},{"given":"Carol A.","family":"Barnes","sequence":"additional","affiliation":[{"name":"Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Center for Neurobiology and Behavior, and Department of Neurology, Columbia University College of Physicians and Surgeons, New York, NY 10032; Kastor Neurobiology of Aging Laboratories and Fishberg Research Center for Neurobiology, Mount Sinai School of Medicine, New York, NY 10029; and Department of Psychology and Neurology and Arizona Research Laboratory Division of Neural Systems Memory and Aging, University of Arizona,..."}]}],"member":"341","published-online":{"date-parts":[[2004,4,26]]},"reference":[{"key":"e_1_3_2_1_2","doi-asserted-by":"publisher","DOI":"10.1016\/0166-2236(94)90029-9"},{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1146\/annurev.psych.48.1.339"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1212\/WNL.52.7.1392"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/0306-4522(89)90424-7"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1002\/cne.1406"},{"key":"e_1_3_2_6_2","first-page":"360","volume":"58","year":"2001","unstructured":"Small, S. A. (2001) Arch. Neurol. (Chicago) 58, 360-364.","journal-title":"Arch. Neurol. (Chicago)"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0531-5565(02)00151-1"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/0197-4580(93)90113-P"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.274.5287.484"},{"key":"e_1_3_2_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0197-4580(00)00250-5"},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0197-4580(00)00245-1"},{"key":"e_1_3_2_12_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0197-4580(00)00244-X"},{"key":"e_1_3_2_13_2","doi-asserted-by":"crossref","unstructured":"Small S. Wu E. Bartsch D. Lacefield C. DeLaPaz R. Mayeux R. Stern Y. & Kandel E. (2000) Neuron 653-664.11163257","DOI":"10.1016\/S0896-6273(00)00144-6"},{"key":"e_1_3_2_14_2","doi-asserted-by":"publisher","DOI":"10.1002\/ana.10105"},{"key":"e_1_3_2_15_2","doi-asserted-by":"publisher","DOI":"10.1038\/nm0298-159"},{"key":"e_1_3_2_16_2","doi-asserted-by":"publisher","DOI":"10.1002\/nbm.733"},{"key":"e_1_3_2_17_2","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1522-2586(199901)9:1<44::AID-JMRI6>3.0.CO;2-7"},{"key":"e_1_3_2_18_2","first-page":"1763","volume":"16","year":"1995","unstructured":"Gonzalez, R. G., Fischman, A. J., Guimaraes, A. R., Carr, C. A., Stern, C. E., Halpern, E. F., Growdon, J. H. & Rosen, B. R. (1995) Am. J. Neuroradiol. 16, 1763-1770.8693972","journal-title":"Am. J. Neuroradiol."},{"key":"e_1_3_2_19_2","first-page":"1727","volume":"19","year":"1998","unstructured":"Harris, G. J., Lewis, R. F., Satlin, A., English, C. D., Scott, T. M., Yurgelun-Todd, D. A. & Renshaw, P. F. (1998) Am. J. Neuroradiol. 19, 1727-1732.9802497","journal-title":"Am. J. Neuroradiol."},{"key":"e_1_3_2_20_2","first-page":"1030","volume":"22","year":"2001","unstructured":"Bozzao, A., Floris, R., Baviera, M. E., Apruzzese, A. & Simonetti, G. (2001) Am. J. Neuroradiol. 22, 1030-1036.11415893","journal-title":"Am. J. Neuroradiol."},{"key":"e_1_3_2_21_2","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1522-2586(199903)9:3<435::AID-JMRI11>3.0.CO;2-J"},{"key":"e_1_3_2_22_2","doi-asserted-by":"publisher","DOI":"10.1523\/JNEUROSCI.22-16-07218.2002"},{"key":"e_1_3_2_23_2","doi-asserted-by":"publisher","DOI":"10.1523\/JNEUROSCI.20-11-03993.2000"},{"key":"e_1_3_2_24_2","doi-asserted-by":"publisher","DOI":"10.1038\/16046"},{"key":"e_1_3_2_25_2","doi-asserted-by":"publisher","DOI":"10.1523\/JNEUROSCI.21-14-05089.2001"},{"key":"e_1_3_2_26_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0730-725X(96)00390-6"},{"key":"e_1_3_2_27_2","doi-asserted-by":"publisher","DOI":"10.1148\/radiology.201.1.8816529"},{"key":"e_1_3_2_28_2","unstructured":"Amaral D. G. & Insausti R. (1990) in The Human Nervous System . ed. Paxinos R. (Academic San Diego)."},{"key":"e_1_3_2_29_2","doi-asserted-by":"publisher","DOI":"10.1523\/JNEUROSCI.23-13-05708.2003"},{"key":"e_1_3_2_30_2","doi-asserted-by":"publisher","DOI":"10.1016\/0896-6273(95)90299-6"},{"key":"e_1_3_2_31_2","first-page":"165","volume":"3","year":"1993","unstructured":"Jung, M. W. & McNaughton, B. L. (1993) Hippocampus 3, 165-182.","journal-title":"Hippocampus"},{"key":"e_1_3_2_32_2","doi-asserted-by":"publisher","DOI":"10.1098\/rstb.1997.0153"},{"key":"e_1_3_2_33_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0531-5565(00)00102-9"},{"key":"e_1_3_2_34_2","first-page":"3","volume":"7","year":"1992","unstructured":"Seress, L. (1992) Epilepsy Res. 7, Suppl., 3-28.","journal-title":"Epilepsy Res."},{"key":"e_1_3_2_35_2","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.1910140311"},{"key":"e_1_3_2_36_2","doi-asserted-by":"publisher","DOI":"10.1016\/0730-725X(95)02058-2"},{"key":"e_1_3_2_37_2","doi-asserted-by":"publisher","DOI":"10.1162\/089892900564046"},{"key":"e_1_3_2_38_2","doi-asserted-by":"publisher","DOI":"10.1006\/nimg.1999.0444"},{"key":"e_1_3_2_39_2","doi-asserted-by":"publisher","DOI":"10.1093\/brain\/103.2.351"},{"key":"e_1_3_2_40_2","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.93.7.3121"},{"key":"e_1_3_2_41_2","first-page":"3","volume":"165","year":"1996","unstructured":"Braak, H. & Braak, E. (1996) Acta Neurol. Scand. Suppl. 165, 3-12.8740983","journal-title":"Acta Neurol. Scand. Suppl."},{"key":"e_1_3_2_42_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1440-1819.1997.tb02588.x"},{"key":"e_1_3_2_43_2","doi-asserted-by":"publisher","DOI":"10.1097\/00005072-199612000-00004"},{"key":"e_1_3_2_44_2","doi-asserted-by":"publisher","DOI":"10.1159\/000117414"},{"key":"e_1_3_2_45_2","doi-asserted-by":"publisher","DOI":"10.1001\/archneur.58.9.1395"},{"key":"e_1_3_2_46_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00401-001-0475-7"},{"key":"e_1_3_2_47_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(94)92338-8"},{"key":"e_1_3_2_48_2","doi-asserted-by":"crossref","first-page":"255","DOI":"10.1111\/j.1749-6632.2000.tb06652.x","volume":"908","year":"2000","unstructured":"West, M. J., Kawas, C. H., Martin, L. J. & Troncoso, J. C. (2000) Ann. N.Y. Acad. Sci. 908, 255-259.10911964","journal-title":"Ann. N.Y. Acad. Sci."},{"key":"e_1_3_2_49_2","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.242746599"}],"container-title":["Proceedings of the National Academy of Sciences"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pnas.org\/doi\/pdf\/10.1073\/pnas.0400285101","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,1,13]],"date-time":"2024-01-13T06:15:54Z","timestamp":1705126554000},"score":1,"resource":{"primary":{"URL":"https:\/\/pnas.org\/doi\/full\/10.1073\/pnas.0400285101"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2004,4,26]]},"references-count":49,"journal-issue":{"issue":"18","published-print":{"date-parts":[[2004,5,4]]}},"alternative-id":["10.1073\/pnas.0400285101"],"URL":"https:\/\/doi.org\/10.1073\/pnas.0400285101","relation":{},"ISSN":["0027-8424","1091-6490"],"issn-type":[{"value":"0027-8424","type":"print"},{"value":"1091-6490","type":"electronic"}],"subject":[],"published":{"date-parts":[[2004,4,26]]},"assertion":[{"value":"2004-01-13","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2004-03-16","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2004-04-26","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}