| Literature DB >> 14751437 |
Kenji Hashimoto1, Takeshi Fukushima, Eiji Shimizu, Shin-ichi Okada, Naoya Komatsu, Naoe Okamura, Kaori Koike, Hiroki Koizumi, Chikara Kumakiri, Kazuhiro Imai, Masaomi Iyo.
Abstract
Several lines of evidence suggest that D-serine may function as an endogenous agonist of the glycine site on the N-methyl-D-aspartate (NMDA) receptor that has been implicated in the pathophysiology of Alzheimer's disease (AD). The purpose of the study was to determine whether serum levels of D- and L-serine in patients with AD are altered as compared with normal controls. Serum levels of D- and L-serine in patients of AD and age- and gender-matched normal controls were determined using a high-performance liquid chromatography (HPLC). Serum levels of D-serine in the patients with AD were slightly (z=-1.77, p=0.078) lower than those of normal controls. In contrast, serum levels of L-serine in the patients were slightly (z=-1.73, p=0.083) higher than those of controls. In addition, the percentage (%) of D-serine in the total (L+D) serine in the patients was significantly (z=-2.36, p=0.018) lower than that of controls. The present study suggests that the reduced activity of serine racemase, an enzyme catalyzing the formation of D-serine from L-serine may play a role in the pathophysiology of AD.Entities:
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Year: 2004 PMID： 14751437 DOI： 10.1016/j.pnpbp.2003.11.009
Source DB: PubMed Journal: Prog Neuropsychopharmacol Biol Psychiatry ISSN： 0278-5846 Impact factor: 5.067