PMID- 11852185 OWN - NLM STAT- MEDLINE DCOM- 20020425 LR - 20190701 IS - 0304-3940 (Print) IS - 0304-3940 (Linking) VI - 320 IP - 3 DP - 2002 Mar 8 TI - Elevated levels of phosphorylated neurofilament proteins in cerebrospinal fluid of Alzheimer disease patients. PG - 156-60 AB - Neurofilament (NF) subunits NF-H, NF-M and NF-L are hyperphosphorylated and elevated in Alzheimer disease (AD) brain. We investigated the level and phosphorylation states of NF subunits in lumbar cerebrospinal fluid (CSF) from living patients by bienzyme substrate-recycle enzyme-linked immunosorbent assay. We found: (i), that the levels of phosphorylated NF-H/M (pNF-H/M), non-phosphorylated NF-H/M (npNF-H/M) and NF-L were significantly higher (pNF-H/M, approximately 12-24-fold; npNF-H/M, approximately 3-4-fold) in neurologically healthy aged people than young control individuals; (ii), that in AD, the levels of npNF-H/M, and NF-L were similar to vascular dementia (VaD), and higher than in age-matched controls; and (iii), that the levels of pNF-H/M were significantly higher than in aged controls, non-AD neurological disorders and VaD. Based on these findings, it is suggested that the increased level of total NF proteins in CSF could be used as a marker for brain aging and neurodegenerative disorders in general, and the levels of pNF-H/M as a marker to discriminate AD from normal brain aging and as well as neurological conditions including VaD. FAU - Hu, Yuan-Yuan AU - Hu YY AD - Tongji Medical College, HUST, Wuhan 430030, PR China. FAU - He, Shan-Shu AU - He SS FAU - Wang, Xiao-Chuang AU - Wang XC FAU - Duan, Qiu-Hong AU - Duan QH FAU - Khatoon, Sabiha AU - Khatoon S FAU - Iqbal, Khalid AU - Iqbal K FAU - Grundke-Iqbal, Inge AU - Grundke-Iqbal I FAU - Wang, Jian-Zhi AU - Wang JZ LA - eng GR - TWOO703/TW/FIC NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Neurofilament Proteins) RN - 0 (neurofilament protein L) RN - 0 (tau Proteins) RN - 108688-71-7 (neurofilament protein H) RN - 111365-29-8 (neurofilament protein M) SB - IM MH - Adolescent MH - Age Factors MH - Aged MH - Alzheimer Disease/*cerebrospinal fluid MH - Brain/*metabolism/pathology/physiopathology MH - Child MH - Child, Preschool MH - Female MH - Humans MH - Immunoassay MH - Male MH - Middle Aged MH - Neurofilament Proteins/*cerebrospinal fluid MH - Neurons/*metabolism/pathology MH - Phosphorylation MH - Up-Regulation/*physiology MH - tau Proteins/cerebrospinal fluid EDAT- 2002/02/20 10:00 MHDA- 2002/04/26 10:01 CRDT- 2002/02/20 10:00 PHST- 2002/02/20 10:00 [pubmed] PHST- 2002/04/26 10:01 [medline] PHST- 2002/02/20 10:00 [entrez] AID - S0304394002000472 [pii] AID - 10.1016/s0304-3940(02)00047-2 [doi] PST - ppublish SO - Neurosci Lett. 2002 Mar 8;320(3):156-60. doi: 10.1016/s0304-3940(02)00047-2.