Details

Autor(en) / Beteiligte

• "Kurihara, H. (Suntory Ltd., Osaka (Japan))
• Fukami, H
• Koda, H
• Tsuruoka, N
• Sugiura, N
• Shibata, H
• Tanaka, T.

Titel

Effects of oolong tea on metabolism of plasma fat in mice under restraint stress

Ist Teil von

• Bioscience, biotechnology, and biochemistry, 2002-09, Vol.66 (9), p.1955-1958

Ort / Verlag

Tokyo: Japan Society for Bioscience, Biotechnology, and Agrochemistry

Erscheinungsjahr

2002

Quelle

EZB-FREE-00999 freely available EZB journals

Beschreibungen/Notizen

• "We investigated the effects of oolong tea on the basic metabolism of plasma lipids in mice under restraint stress. When a lipid emulsion (Intralipid 20%; a lipid emulsion containing 20% soybean oil) was injected intravenously into mice, the restraint stress prolonged the half-life (T1/2) of elimination for plasma triglyceride (TG) from 28.7 to 55.5 min. The elimination rate per minute was 48.2% in stressed mice with the rate in starved control mice as 100%. Therefore, TG metabolism was disrupted by the stress, and the use of TG as an energy source decreased. We found that the metabolism of lipids significantly response to the restrained stress in the present study. Plasma TG was 515.9=+- 29.9mg/dl 35 min after lntralipid administration in control stressed mice, 478.7=+- 26.7mg/dl in the stressed group given caffeine 100mg/kg of body weight, and 418.3=+- 18.4mg/dl in the stressed group given 1000mg/kg oolong tea, an improvement by 7.2% and 18.9%, respectively, with the value for the untreated control group. The intake of oolong tea alleviated the stress-induced decrease in the rate of blood lipid metabolism; this effect may have arisen from some nonspecific stress-relieving property of the tea or from accelebration of lipid metabolism by properties of polyphenols, etc. in tea. Oolong tea had anti-stress effects on plasma TG metabolism, and the effects did not depend on caffeine."