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Article: Effects of a Fermented Milk Drink Containing Lactobacillus casei Strain Shirota on the Human NK-Cell Activity1,2
- Article from:
- The Journal of Nutrition
- Article date:
- March 1, 2007
- Author:
CopyrightCopyright American Institute of Nutrition Mar 2007. Provided by ProQuest LLC. (Hide copyright information)
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Abstract
Nine healthy middle-aged and 10 elderly volunteers drank fermented milk containing 4 Ã 10^sup 10^ live cells of Lactobacillus casei strain Shirota daily for 3 wk, and their natural killer (NK) activity and other immunological functions were examined. In the experiments with middle-aged volunteers, NK activity significantly increased (P < 0.01) 3 wk after the start of intake, elevated NK cell activity remained for the next 3 wk, and this effect was particularly prominent in the low-NK-activity individuals. In the experiments with elderly volunteers, NK activity significantly decreased (P < 0.01) in the control group 3 wk after the start of intake; however, the intake of ...