PMID- 16872586 OWN - NLM STAT- MEDLINE DCOM- 20061031 LR - 20191210 IS - 0006-8993 (Print) IS - 0006-8993 (Linking) VI - 1109 IP - 1 DP - 2006 Sep 13 TI - Protective effect of N-acetyl-L-cysteine on amyloid beta-peptide-induced learning and memory deficits in mice. PG - 201-6 AB - This study aimed to examine the effects of N-acetyl-L-cysteine (NAC) on protecting neurons function and improving learning and memory deficits in mice. Mice were intracerebroventricularly (icv) injected with the aggregated amyloid beta-peptide (Abeta) to produce Alzheimer's disease (AD). Learning and memory functions in mice were examined by the step through test and the water maze performance. The results showed that the mice pretreated with NAC had significantly greater retention in the step through test and shorter latencies in the water maze performance. Biochemical studies showed the potential role of free radical toxicity and the damage of cholinergic neurons in the Abeta-treated mice. There was an increased lipid peroxidation as indicated by elevated malondehyde (MDA) and decrease of glutathione (GSH) levels. There was also an increase in acetylcholinesterase (AChE) activity and a reduction in the choline acetyltransferase (ChAT) activity and acetylcholine (ACh) levels. NAC pretreatment significantly reversed the elevated MDA, AChE and the reduced GSH, ChAT and ACh in the Abeta-model mice. The results of the present study suggest the potential usage of the neuroprotective action of NAC on AD. FAU - Fu, Ai-Ling AU - Fu AL AD - Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing, 100850, China. FAU - Dong, Zhao-Hui AU - Dong ZH FAU - Sun, Man-Ji AU - Sun MJ LA - eng PT - Comparative Study PT - Journal Article DEP - 20060726 PL - Netherlands TA - Brain Res JT - Brain research JID - 0045503 RN - 0 (Amyloid beta-Peptides) RN - 0 (Expectorants) RN - 4Y8F71G49Q (Malondialdehyde) RN - EC 2.3.1.6 (Choline O-Acetyltransferase) RN - EC 3.1.1.7 (Acetylcholinesterase) RN - GAN16C9B8O (Glutathione) RN - N9YNS0M02X (Acetylcholine) RN - WYQ7N0BPYC (Acetylcysteine) SB - IM MH - Acetylcholine/metabolism MH - Acetylcholinesterase/metabolism MH - Acetylcysteine/*administration & dosage MH - *Amyloid beta-Peptides MH - Analysis of Variance MH - Animals MH - Behavior, Animal/drug effects MH - Brain Chemistry/drug effects MH - Choline O-Acetyltransferase/metabolism MH - DNA Fragmentation/drug effects MH - Dose-Response Relationship, Drug MH - Drug Interactions MH - Expectorants/*administration & dosage MH - Glutathione/metabolism MH - Hippocampus/drug effects/pathology MH - Injections, Intraventricular/methods MH - Learning Disabilities/chemically induced/*prevention & control MH - Lipid Peroxidation/drug effects MH - Male MH - Malondialdehyde/metabolism MH - Mice MH - Mice, Inbred Strains EDAT- 2006/07/29 09:00 MHDA- 2006/11/01 09:00 CRDT- 2006/07/29 09:00 PHST- 2006/05/02 00:00 [received] PHST- 2006/06/14 00:00 [revised] PHST- 2006/06/15 00:00 [accepted] PHST- 2006/07/29 09:00 [pubmed] PHST- 2006/11/01 09:00 [medline] PHST- 2006/07/29 09:00 [entrez] AID - S0006-8993(06)01867-1 [pii] AID - 10.1016/j.brainres.2006.06.042 [doi] PST - ppublish SO - Brain Res. 2006 Sep 13;1109(1):201-6. doi: 10.1016/j.brainres.2006.06.042. Epub 2006 Jul 26.