|
51
|
Inoue K, Miyazaki Y, Unno K, Min JZ, Todoroki K, Toyo'oka T. Stable isotope dilution HILIC-MS/MS method for accurate quantification of glutamic acid, glutamine, pyroglutamic acid, GABA and theanine in mouse brain tissues. Biomed Chromatogr 2015; 30:55-61. [DOI: 10.1002/bmc.3502] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 04/16/2015] [Accepted: 04/28/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Koichi Inoue
- Laboratory of Clinical and Analytical Chemistry, College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu Shiga 525-8577 Japan
- Laboratory of Analytical and Bio-Analytical Chemistry, School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada Suruga-ku Shizuoka 422-8526 Japan
| | - Yasuto Miyazaki
- Laboratory of Analytical and Bio-Analytical Chemistry, School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada Suruga-ku Shizuoka 422-8526 Japan
| | - Keiko Unno
- Department of Neurophysiology, School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada Shizuoka 422-8526 Japan
| | - Jun Zhe Min
- Laboratory of Analytical and Bio-Analytical Chemistry, School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada Suruga-ku Shizuoka 422-8526 Japan
| | - Kenichiro Todoroki
- Laboratory of Analytical and Bio-Analytical Chemistry, School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada Suruga-ku Shizuoka 422-8526 Japan
| | - Toshimasa Toyo'oka
- Laboratory of Analytical and Bio-Analytical Chemistry, School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada Suruga-ku Shizuoka 422-8526 Japan
| |
Collapse
|
|
52
|
Zeng Y, Chen H, Ni T, Ruan R, Feng L, Nie C, Cheng L, Li Y, Tao W, Gu J, Land KC, Yashin A, Tan Q, Yang Z, Bolund L, Yang H, Hauser E, Willcox DC, Willcox BJ, Tian XL, Vaupel JW. GxE interactions between FOXO genotypes and drinking tea are significantly associated with prevention of cognitive decline in advanced age in China. J Gerontol A Biol Sci Med Sci 2014; 70:426-33. [PMID: 24895270 DOI: 10.1093/gerona/glu060] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Logistic regression analysis based on data from 822 Han Chinese oldest old aged 92+ demonstrated that interactions between carrying FOXO1A-266 or FOXO3-310 or FOXO3-292 and tea drinking at around age 60 or at present time were significantly associated with lower risk of cognitive disability at advanced ages. Associations between tea drinking and reduced cognitive disability were much stronger among carriers of the genotypes of FOXO1A-266 or FOXO3-310 or FOXO3-292 compared with noncarriers, and it was reconfirmed by analysis of three-way interactions across FOXO genotypes, tea drinking at around age 60, and at present time. Based on prior findings from animal and human cell models, we postulate that intake of tea compounds may activate FOXO gene expression, which in turn may positively affect cognitive function in the oldest old population. Our empirical findings imply that the health benefits of particular nutritional interventions, including tea drinking, may, in part, depend upon individual genetic profiles.
Collapse
Affiliation(s)
- Yi Zeng
- Center for the Study of Aging and Human Development and Geriatrics Division, Medical School of Duke University, Durham, North Carolina. Center for Healthy Aging and Development Studies, National School of Development, Peking University, Beijing, China
| | - Huashuai Chen
- Center for the Study of Aging and Human Development and Geriatrics Division, Medical School of Duke University, Durham, North Carolina. Business School of Xiangtan University, Hunan, China
| | - Ting Ni
- State Key Laboratory of Genetics Engineering & MOE Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China
| | | | - Lei Feng
- National University of Singapore
| | | | | | - Yang Li
- Department of Human Population Genetics, Institute of Molecular Medicine, Peking University, Beijing, China
| | - Wei Tao
- School of Life Sciences, Peking University, Beijing, China
| | - Jun Gu
- School of Life Sciences, Peking University, Beijing, China
| | - Kenneth C Land
- Population Research Institute, Duke University, Durham, North Carolina
| | - Anatoli Yashin
- Population Research Institute, Duke University, Durham, North Carolina
| | - Qihua Tan
- Unit of Epidemiology, Biostatistics and Biodemography, Institute of Public Health, University of Southern Denmark, Odense
| | - Ze Yang
- National Institute of Geriatrics, Beijing Hospital, Ministry of Health of China, Beijing, China
| | - Lars Bolund
- BGI-Shenzhen, China. Department of Biomedicine, Aarhus University, Denmark
| | - Huanming Yang
- BGI-Shenzhen, China. James D. Watson Institute of Genome Sciences, Hangzhou, China. Princess Al-Jawhara Centre of Excellence in Research of Hereditary Disorders, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Elizabeth Hauser
- Center for Human Genetics, Medical Center, Duke University, Durham, North Carolina
| | - D Craig Willcox
- Department of Human Welfare, Okinawa International University, Ginowan, Japan. Department of Research, Kuakini Medical Center and Department of Geriatric Medicine, John A. Burns School of Medicine, University of Hawaii, Honolulu
| | - Bradley J Willcox
- Department of Research, Kuakini Medical Center and Department of Geriatric Medicine, John A. Burns School of Medicine, University of Hawaii, Honolulu
| | - Xiao-Li Tian
- Department of Human Population Genetics, Institute of Molecular Medicine, Peking University, Beijing, China
| | - James W Vaupel
- Max Planck Institute for Demographic Research, Rostock, Germany
| |
Collapse
|
|
53
|
Physiological effects of L-theanine on Drosophila melanogaster. Molecules 2013; 18:13175-87. [PMID: 24284483 PMCID: PMC6270322 DOI: 10.3390/molecules181113175] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 10/15/2013] [Accepted: 10/15/2013] [Indexed: 12/14/2022] Open
Abstract
Green tea has been consumed as the most popular drink in East Asia for centuries, and is believed to have a wide range of health benefits. l-Theanine, the major component of the free amino acids in green tea, has been reported to display neuronal protection and tumor inhibition in vitro, but its physiological effects on animal development and behavior remain elusive. In this report, we used Drosophila melanogaster, the fruit fly, as a model organism to investigate the physiological effects of l-theanine. Flies were fed with three different concentrations of theanine as a dietary supplement after eclosion, and were examined for a variety of physiological parameters at different time points. We found theanine treatment results in significantly increased locomotion and courtship ability, and decreased resistance against wet and dry starvation in males, but not in females. Furthermore, theanine application diminished UV tolerance in females, but not in males. However, we did not perceive distinguishable effect of theanine on animal development, life span, weight, and tolerance of heat and anoxia. This work represents the first comprehensive physiological investigation of l-theanine at the whole animal level, and shall shed light on the mechanistic study of theanine in the future.
Collapse
|