PMID- 9880042 OWN - NLM STAT- MEDLINE DCOM- 19990311 LR - 20190909 IS - 0197-4580 (Print) IS - 1558-1497 (Electronic) IS - 0197-4580 (Linking) VI - 19 IP - 5 DP - 1998 Sep-Oct TI - Life-long overexpression of S100beta in Down's syndrome: implications for Alzheimer pathogenesis. PG - 401-5 AB - Chronic overexpression of the neurite growth-promoting factor S100beta has been implicated in the pathogenesis of neuritic plaques in Alzheimer's disease. Such plaques are virtually universal in middle-aged Down's syndrome, making Down's a natural model of Alzheimer's disease. We determined numbers of astrocytes overexpressing S100beta, and of neurons overexpressing beta-amyloid precursor protein (beta-APP), and assayed for neurofibrillary tangles in neocortex of 20 Down's syndrome patients (17 weeks gestation to 68 years). Compared to controls, there were twice as many S100beta-immunoreactive (S100beta+) astrocytes in Down's patients at all ages: fetal, young, and adult (p = 0.01, or better, in each age group). These were activated (i.e., enlarged), and intensely immunoreactive, even in the fetal group. There were no neurofibrillary changes in fetal or young Down's patients. The numbers of S100beta+ astrocytes in young and adult Down's patients correlated with the numbers of neurons overexpressing beta-APP (p < 0.05). Our findings are consistent with the idea that conditions--including Down's syndrome--that promote chronic overexpression of S100beta may confer increased risk for later development of Alzheimer's disease. FAU - Griffin, W S AU - Griffin WS AD - Geriatric Research, Education, and Clinical Center of the Department of Veterans' Affairs Medical Center, University of Arkansas for Medical Sciences, Little Rock 72205, USA. griffinsuet@exchange.uams.edu FAU - Sheng, J G AU - Sheng JG FAU - McKenzie, J E AU - McKenzie JE FAU - Royston, M C AU - Royston MC FAU - Gentleman, S M AU - Gentleman SM FAU - Brumback, R A AU - Brumback RA FAU - Cork, L C AU - Cork LC FAU - Del Bigio, M R AU - Del Bigio MR FAU - Roberts, G W AU - Roberts GW FAU - Mrak, R E AU - Mrak RE LA - eng GR - P01 AG012411/AG/NIA NIH HHS/United States GR - AG 10208/AG/NIA NIH HHS/United States GR - AG12411/AG/NIA NIH HHS/United States GR - NS 27414/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Neurobiol Aging JT - Neurobiology of aging JID - 8100437 RN - 0 (Amyloid beta-Peptides) RN - 0 (S100 Proteins) RN - 0 (S100A1 protein) RN - 0 (tau Proteins) SB - IM MH - Adult MH - Age Factors MH - Aged MH - Alzheimer Disease/*etiology/*metabolism/pathology MH - Amyloid beta-Peptides/analysis MH - Astrocytes/pathology MH - Brain/growth & development/metabolism MH - Brain Chemistry MH - Cell Count MH - Child MH - Child, Preschool MH - Down Syndrome/*metabolism/pathology MH - Fetus/chemistry/metabolism MH - Humans MH - Infant MH - Middle Aged MH - Neurons/chemistry/pathology MH - S100 Proteins/analysis/*biosynthesis MH - tau Proteins/analysis PMC - PMC3833593 MID - NIHMS524652 EDAT- 1999/01/08 00:00 MHDA- 1999/01/08 00:01 PMCR- 2013/11/19 CRDT- 1999/01/08 00:00 PHST- 1999/01/08 00:00 [pubmed] PHST- 1999/01/08 00:01 [medline] PHST- 1999/01/08 00:00 [entrez] PHST- 2013/11/19 00:00 [pmc-release] AID - S0197-4580(98)00074-8 [pii] AID - 10.1016/s0197-4580(98)00074-8 [doi] PST - ppublish SO - Neurobiol Aging. 1998 Sep-Oct;19(5):401-5. doi: 10.1016/s0197-4580(98)00074-8.