Effects of Dietary Supplementation with n-3 Fatty Acids Compared with n-6 Fatty Acids on Bronchial Asthma.

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  • OKAMOTO Makoto
    the Department of Medicine, Misasa Medical Branch, Okayama University Medical School
  • MITSUNOBU Fumihiro
    the Department of Medicine, Misasa Medical Branch, Okayama University Medical School
  • ASHIDA Kozo
    the Department of Medicine, Misasa Medical Branch, Okayama University Medical School
  • MIFUNE Takashi
    the Department of Medicine, Misasa Medical Branch, Okayama University Medical School
  • HOSAKI Yasuhiro
    the Department of Medicine, Misasa Medical Branch, Okayama University Medical School
  • TSUGENO Hirofumi
    the Department of Medicine, Misasa Medical Branch, Okayama University Medical School
  • HARADA Seishi
    the Department of Medicine, Misasa Medical Branch, Okayama University Medical School
  • TANIZAKI Yoshiro
    the Department of Medicine, Misasa Medical Branch, Okayama University Medical School

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Objective The effects of perilla seed oil (n-3 fatty acids) on bronchial asthma were compared with the effects of corn oil (n-6 fatty acids) in relation to the pulmonary function and the generation of leukotriene B4 (LTB4) and C4 (LTC4) by leucocytes.<br> Methods and Subjects 14 asthmatic subjects were divided randomly into two groups: one group (7 subjects) consumed perilla seed oil-rich supplementation and the other group (7 subjects) consumed corn oil-rich supplementation for 4 weeks. Generation of LTs by leucocytes and respiratory function were compared between the two groups.<br> Results The generation of LTB4 and LTC4 by leucocytes tended to increase in subjects (N=7) with corn oil-rich supplementation, and decrease in subjects (N=7) with perilla seed oil-rich supplementation. Significant differences between the two groups were observed in the generation of LTB4 at 2 weeks (p<0.05) and LTC4 at 2 weeks (p<0.05) after dietary supplementation. Significant increases in the value of PEF (p<0.05), FVC (p<0.01), FEV1.0 (p<0.05) and V25 (p<0.05) were found in subjects who received perilla seed oil supplementation for 4 weeks. And significant differences in the value of FVC (p<0.05) and FEV1.0 (p<0.05) were observed between the two groups after 4 weeks of dietary supplementation.<br> Conclusion These results suggest that perilla seed oilrich supplementation is useful for the treatment of asthma in terms of suppression of LTB4 and LTC4 generation by leucocytes, and improvement of pulmonary function.<br>(Internal Medicine 39: 107-111, 2000)

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  • Internal Medicine

    Internal Medicine 39 (2), 107-111, 2000

    一般社団法人 日本内科学会

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