TY - JOUR
T1 - L-Proline is a sedative regulator of acute stress in the brain of neonatal chicks
AU - Hamasu, K.
AU - Haraguchi, T.
AU - Kabuki, Y.
AU - Adachi, N.
AU - Tomonaga, S.
AU - Sato, H.
AU - Denbow, D. M.
AU - Furuse, M.
N1 - Funding Information:
This work was supported by a Grant-in-Aid for Scientific Research from Japan Society for the Promotion of Science (No. 18208023) and the SKYLARK Food Science Institute. The authors are grateful to the staffs and students of Laboratory of Chemistry and Technology of Animal Products in Kyushu University for their assistance in analysis of amino acids.
PY - 2009/7
Y1 - 2009/7
N2 - The purpose of the present study was to clarify the central nervous system function of amino acids during acute stress. In Experiment 1, changes in free amino acid pattern were investigated in the brain of neonatal chicks exposed to either restraint with isolation-induced or fasting stress. l-Proline and l-arginine were decreased in the telencephalon and diencephalon under any stress. Since the central nervous system functions of l-arginine during the stress response has recently been reported, in Experiment 2, the effect of intracerebroventricular injection of l-proline (0.5, 1.0, 2.0 μmol) during isolation-induced stress was investigated. l-Proline induced sedative and hypnotic effects in a dose-dependent manner. It is suggested that l-proline may have an important role to attenuate the stress response in the central nervous system of chicks.
AB - The purpose of the present study was to clarify the central nervous system function of amino acids during acute stress. In Experiment 1, changes in free amino acid pattern were investigated in the brain of neonatal chicks exposed to either restraint with isolation-induced or fasting stress. l-Proline and l-arginine were decreased in the telencephalon and diencephalon under any stress. Since the central nervous system functions of l-arginine during the stress response has recently been reported, in Experiment 2, the effect of intracerebroventricular injection of l-proline (0.5, 1.0, 2.0 μmol) during isolation-induced stress was investigated. l-Proline induced sedative and hypnotic effects in a dose-dependent manner. It is suggested that l-proline may have an important role to attenuate the stress response in the central nervous system of chicks.
UR - http://www.scopus.com/inward/record.url?scp=62649111681&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=62649111681&partnerID=8YFLogxK
U2 - 10.1007/s00726-008-0164-0
DO - 10.1007/s00726-008-0164-0
M3 - Article
C2 - 18696178
AN - SCOPUS:62649111681
SN - 0939-4451
VL - 37
SP - 377
EP - 382
JO - Amino Acids
JF - Amino Acids
IS - 2
ER -