PMID- 16574253 OWN - NLM STAT- MEDLINE DCOM- 20061011 LR - 20131121 IS - 0166-4328 (Print) IS - 0166-4328 (Linking) VI - 170 IP - 1 DP - 2006 Jun 3 TI - Intracerebroventricular injection of L-serine analogs and derivatives induces sedative and hypnotic effects under an acute stressful condition in neonatal chicks. PG - 71-7 AB - Four experiments were conducted to clarify the central functions of L-serine and its analogs on an acute stressful condition. Intracerebroventricular (i.c.v.) injection of L-serine (0.21, 0.42 and 0.84 micromol) attenuated stress responses in a dose-dependent fashion, as well as induced sleep, in Experiment 1. The effects of L- and D-serine in Experiment 2, those of L-serine, phosphoserine, acetylserine and L-cysteine in Experiment 3 and those of L-serine, glycine and lysophosphatidylserine in Experiment 4 were compared at an equimolar basis (0.84 micromol). D-Serine, proposed as an endogenous agonist of N-methyl-D-aspatate (NMDA) receptor, did not have sedative and hypnotic effects as observed with L-serine. In contrast, all the analogs and derivatives of L-serine had a sedative effect, although with a different manner in several behavioral markers of stress such as spontaneous activity and distress vocalizations. No significant changes in plasma corticosterone concentration were observed in any experiment. Taken together, the i.c.v. injection of L-serine analogs and its derivatives have sedative and hypnotic effects under an acute stressful condition, which does not involve the hypothalamic-pituitary-adrenal axis. In conclusion, L-serine may be effective in improving anxiety or sleep disorders induced by psychological stressor. FAU - Asechi, Mari AU - Asechi M AD - Laboratory of Advanced Animal and Marine Bioresources, Graduate School of Bioresources and Bioenvironmental Sciences, Kyushu University, Fukuoka 812-8581, Japan. FAU - Tomonaga, Shozo AU - Tomonaga S FAU - Tachibana, Tetsuya AU - Tachibana T FAU - Han, Li AU - Han L FAU - Hayamizu, Kohsuke AU - Hayamizu K FAU - Denbow, D Michael AU - Denbow DM FAU - Furuse, Mitsuhiro AU - Furuse M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060329 PL - Netherlands TA - Behav Brain Res JT - Behavioural brain research JID - 8004872 RN - 0 (Hypnotics and Sedatives) RN - 0 (Receptors, N-Methyl-D-Aspartate) RN - 452VLY9402 (Serine) SB - IM MH - Age Factors MH - Animals MH - Arousal/*drug effects MH - Brain/drug effects MH - Chickens MH - Dose-Response Relationship, Drug MH - Hypnotics and Sedatives/*pharmacology MH - Injections, Intraventricular MH - Male MH - Motor Activity/drug effects MH - Posture MH - Receptors, N-Methyl-D-Aspartate/agonists MH - Serine/*analogs & derivatives/*pharmacology MH - Sleep/drug effects MH - Social Environment MH - Stress, Psychological/*complications MH - Vocalization, Animal/drug effects EDAT- 2006/04/01 09:00 MHDA- 2006/10/13 09:00 CRDT- 2006/04/01 09:00 PHST- 2005/10/13 00:00 [received] PHST- 2006/01/31 00:00 [revised] PHST- 2006/02/07 00:00 [accepted] PHST- 2006/04/01 09:00 [pubmed] PHST- 2006/10/13 09:00 [medline] PHST- 2006/04/01 09:00 [entrez] AID - S0166-4328(06)00112-4 [pii] AID - 10.1016/j.bbr.2006.02.005 [doi] PST - ppublish SO - Behav Brain Res. 2006 Jun 3;170(1):71-7. doi: 10.1016/j.bbr.2006.02.005. Epub 2006 Mar 29.