Effects of Green Tea Catechins and Theanine on Preventing Influenza Infection among Healthcare Workers: A Randomized Controlled Trial

BMC Complementary and Alternative Medicine

Volumn 11, Issue , 2011, Pages

  Matsumoto, Keiji ^a   Yamada, Hiroshi ^a   Takuma, Norikata ^b   Niino, Hitoshi ^c   Sagesaka, Yuko M ^c  

^a UNIVERSITY OF SHIZUOKA   (Japan)

^b White Cross Nursing Home ^*  (Japan)

^c 421 0516   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

GREEN TEA EXTRACT; PLACEBO; THEANINE; VIRUS ANTIGEN; CATECHIN; GLUTAMIC ACID DERIVATIVE; PLANT EXTRACT;

ADULT; AGED; ARTICLE; BLOATING; CONSTIPATION; DOUBLE BLIND PROCEDURE; DRUG EFFICACY; FEMALE; HEALTH CARE FACILITY; HEALTH CARE PERSONNEL; HUMAN; IMMUNOASSAY; INFECTION PREVENTION; INFLUENZA; MAJOR CLINICAL STUDY; MALE; RANDOMIZED CONTROLLED TRIAL; TREATMENT OUTCOME; CHEMISTRY; CLINICAL TRIAL; CONTROLLED CLINICAL TRIAL; CONTROLLED STUDY; INCIDENCE; PHYTOTHERAPY; TEA;

ADULT; CAMELLIA SINENSIS; CATECHIN; DOUBLE-BLIND METHOD; GLUTAMATES; HEALTH PERSONNEL; HUMANS; INCIDENCE; INFLUENZA, HUMAN; PHYTOTHERAPY; PLANT EXTRACTS; TEA;

EID: 79951713561     PISSN: None     EISSN: 14726882     Source Type: Journal    
DOI: 10.1186/1472-6882-11-15     Document Type: Article

References (16)

1. Thompson WW, Shay DK, Weintraub E, et al. Influenza-associated hospitalizations in the United States. JAMA 2004, 292:1333-1340. 10.1001/jama.292.11.1333, 15367555.
2. Bell DM, . World Health Organization Writing Group Non-pharmaceutical interventions for pandemic influenza, national and community measures. Emerg Infect Dis 2006, 12:88-94. World Health Organization Writing Group.
3. Aiello AE, Murray GF, Perez V, et al. Mask use, hand hygiene, and seasonal influenza-like illness among young adults: a randomized intervention trial. J Infect Dis 2010, 201:491-498. 10.1086/650396, 20088690.
4. Aledort JE, Lurie N, Wasserman J, Bozzette SA. Non-pharmaceutical public health interventions for pandemic influenza: an evaluation of the evidence base. BMC Public Health 2007, 7:208. 10.1186/1471-2458-7-208, 2040158, 17697389.
5. Cowling BJ, Chan KH, Fang VJ, et al. Facemasks and hand hygiene to prevent influenza transmission in households: a cluster randomized trial. Ann Intern Med 2009, 151:437-446.
6. Collin N, de Radiguès X, . World Health Organization H1N1 Vaccine Task Force Vaccine production capacity for seasonal and pandemic (H1N1) 2009 influenza. Vaccine 2009, 27:5184-5186. 10.1016/j.vaccine.2009.06.034, 19563891, World Health Organization H1N1 Vaccine Task Force.
7. Jefferson T, Jones M, Doshi P, Del Mar C. Neuraminidase inhibitors for preventing and treating influenza in healthy adults: systematic review and meta-analysis. BMJ 2009, 339:b5106. 10.1136/bmj.b5106, 2790574, 19995812.
8. Balentine DA, Wiseman SA, Bouwens LC. The chemistry of tea flavonoids. Crit Rev Food Sci Nutr 1997, 37:693-704. 10.1080/10408399709527797, 9447270.
9. Song JM, Lee KH, Seong BL. Antiviral effect of catechins in green tea on influenza virus. Antiviral Res 2005, 68:66-74. 10.1016/j.antiviral.2005.06.010, 16137775.
10. Yamada H, Takuma N, Daimon T, Hara Y. Gargling with tea catechin extracts for the prevention of influenza infection in elderly nursing home residents: a prospective clinical study. J Altern Complement Med 2006, 12:669-672. 10.1089/acm.2006.12.669, 16970537.
11. Rowe CA, Nantz MP, Bukowski JF, Percival SS. Specific formulation of Camellia sinensis prevents cold and flu symptoms and enhances gamma,delta T cell function: a randomized, double-blind, placebo-controlled study. J Am Coll Nutr 2007, 26:445-452.
12. Boivin G, Hardy I, Tellier G, Maziade J. Predicting influenza infections during epidemics with use of a clinical case definition. Clin Infect Dis 2000, 31:1166-1169. 10.1086/317425, 11073747.
13. Maezawa T, Yamamura Y, Suganuma T. Evaluation of a rapid detection kit for influenza A and B viruses using immunochromatography "RapidTesta® FLU II". Igaku Yakugaku 2004, 52:481-486.
14. Mukhtar H, Ahmad N. Tea polyphenols: prevention of cancer and optimizing health. Am J Clin Nutr 2000, 71:1698S-1702S.
15. Mantani N, Imanishi N, Kawamata H, Terasawa K, Ochiai H. Inhibitory effect of (+)-catechin on the growth of influenza A/PR/8 virus in MDCK cells. Planta Med 2001, 67:240-243. 10.1055/s-2001-12009, 11345695.
16. Imanishi N, Tuji Y, Katada Y, Maruhashi M, Konosu S, Mantani N, Terasawa K, Ochiai H. Additional inhibitory effect of tea extract on the growth of influenza A and B viruses in MDCK cells. Microbiol Immunol 2002, 46:491-494.