PMID- 10027549 OWN - NLM STAT- MEDLINE DCOM- 19990614 LR - 20190701 IS - 0304-3940 (Print) IS - 0304-3940 (Linking) VI - 259 IP - 1 DP - 1999 Jan 4 TI - Plasma levels of apolipoprotein E and genetic markers in elderly patients with Alzheimer's disease. PG - 33-6 AB - Besides apolipoprotein E (APOE) polymorphism, whose association with Alzheimer's disease (AD) has been confirmed in most of the numerous population samples studied, other markers have been investigated. In most cases the association firstly described was not confirmed in subsequent works. Since it is important to examine these associations in as many populations as possible, we investigated APOE, APOC1, APOC2, alpha-1 antichymotrypsin (ACT) and presenilin-1 (PS-1) polymorphisms in a series of elderly patients with late-onset sporadic AD from Northern Italy and in a sex and age-matched control group. We could not confirm the significantly higher frequency of the ACT*A allele among carriers of APOE e*4 allele described elsewhere, although a similar trend was observed. The APOC2 and the PS-1 distributions were similar between patients and controls. However, we observed a significant difference in the genotype and allele frequencies of APOE and APOC1: patients had higher e*4 and C1*2 allele frequencies. This finding confirms the important role for APOE in AD occurrence. In addition, APOC1 seems to be an interesting marker because, though in strict linkage disequilibrium with APOE, it seems to play an independent role in AD risk. In contrast to previously reported data, plasma apoE concentrations were similar in patients and in controls. An interaction between APOE and APOC1 polymorphisms and apoE levels was observed in patients: subjects carrying the APOE E3/E2 or the APOC1 2-2 genotype have higher apoE concentrations than those who do not. FAU - Scacchi, R AU - Scacchi R AD - CNR Center of Evolutionary Genetics, Department of Genetics and Molecular Biology, University La Sapienza, Rome, Italy. scacchi@axcasp.caspur.it FAU - Gambina, G AU - Gambina G FAU - Ruggeri, M AU - Ruggeri M FAU - Martini, M C AU - Martini MC FAU - Ferrari, G AU - Ferrari G FAU - Silvestri, M AU - Silvestri M FAU - Schiavon, R AU - Schiavon R FAU - Corbo, R M AU - Corbo RM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Apolipoproteins E) RN - 0 (Genetic Markers) SB - IM MH - Aged MH - Aged, 80 and over MH - Alzheimer Disease/*blood/*genetics MH - Apolipoproteins E/*blood MH - Female MH - Genetic Markers MH - Humans MH - Male EDAT- 1999/02/23 00:00 MHDA- 1999/02/23 00:01 CRDT- 1999/02/23 00:00 PHST- 1999/02/23 00:00 [pubmed] PHST- 1999/02/23 00:01 [medline] PHST- 1999/02/23 00:00 [entrez] AID - S0304-3940(98)00889-1 [pii] AID - 10.1016/s0304-3940(98)00889-1 [doi] PST - ppublish SO - Neurosci Lett. 1999 Jan 4;259(1):33-6. doi: 10.1016/s0304-3940(98)00889-1.