Literature DB >> 9614715

Theanine-induced reduction of brain serotonin concentration in rats.

H Yokogoshi1, M Mochizuki, K Saitoh.   

Abstract

Following the administration of theanine, the brain tryptophan content significantly increased or tended to increase, but the contents of serotonin and 5-hydroxyindole acetic acid (5HIAA) decreased. The use of inhibitors of serotonin metabolism enable us to speculate that theanine reduced serotonin synthesis and also increased serotonin degradation in the brain.

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Year:  1998        PMID： 9614715     DOI： 10.1271/bbb.62.816

Source DB:  PubMed          Journal:  Biosci Biotechnol Biochem        ISSN： 0916-8451            Impact factor:   2.043


  11 in total

1.  L-Theanine healed NSAID-induced gastric ulcer by modulating pro/antioxidant balance in gastric ulcer margin.

Authors:  Sirshendu Chatterjee; Ananya Chatterjee; Surmi Roy; Biswajit Bera; Sandip K Bandyopadhyay
Journal:  J Nat Med       Date:  2014-07-01       Impact factor: 2.343

2.  Behavioral and molecular evidence for psychotropic effects in L-theanine.

Authors:  Chisato Wakabayashi; Tadahiro Numakawa; Midori Ninomiya; Shuichi Chiba; Hiroshi Kunugi
Journal:  Psychopharmacology (Berl)       Date:  2011-08-23       Impact factor: 4.530

3.  Effects of L-theanine on anxiety-like behavior, cerebrospinal fluid amino acid profile, and hippocampal activity in Wistar Kyoto rats.

Authors:  Shintaro Ogawa; Miho Ota; Jun Ogura; Koichi Kato; Hiroshi Kunugi
Journal:  Psychopharmacology (Berl)       Date:  2017-10-03       Impact factor: 4.530

4.  Green tea consumption affects cognitive dysfunction in the elderly: a pilot study.

Authors:  Kazuki Ide; Hiroshi Yamada; Norikata Takuma; Mijong Park; Noriko Wakamiya; Junpei Nakase; Yuuichi Ukawa; Yuko M Sagesaka
Journal:  Nutrients       Date:  2014-09-29       Impact factor: 5.717

5.  Effects of L-theanine or caffeine intake on changes in blood pressure under physical and psychological stresses.

Authors:  Ai Yoto; Mao Motoki; Sato Murao; Hidehiko Yokogoshi
Journal:  J Physiol Anthropol       Date:  2012-10-29       Impact factor: 2.867

6.  The effect of green tea consumption on oxidative stress markers and cognitive function in patients with Alzheimer's disease: A prospective intervention study.

Authors:  Horrolein Arab; Soleiman Mahjoub; Karimollah Hajian-Tilaki; Mehdi Moghadasi
Journal:  Caspian J Intern Med       Date:  2016

7.  Effect of l-theanine tablets in reducing stress-related emotional signs in cats: an open-label field study.

Authors:  V Dramard; L Kern; J Hofmans; C A Rème; C S Nicolas; V Chala; C Navarro
Journal:  Ir Vet J       Date:  2018-10-09       Impact factor: 2.146

Review 8.  Neuroprotection by radical avoidance: search for suitable agents.

Authors:  Rüdiger Hardeland
Journal:  Molecules       Date:  2009-12-07       Impact factor: 4.411

9.  GABA and l-theanine mixture decreases sleep latency and improves NREM sleep.

Authors:  Suhyeon Kim; Kyungae Jo; Ki-Bae Hong; Sung Hee Han; Hyung Joo Suh
Journal:  Pharm Biol       Date:  2019-12       Impact factor: 3.503

10.  Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.

Authors:  Shinsuke Hidese; Shintaro Ogawa; Miho Ota; Ikki Ishida; Zenta Yasukawa; Makoto Ozeki; Hiroshi Kunugi
Journal:  Nutrients       Date:  2019-10-03       Impact factor: 5.717
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