Tumor Necrosis Factor (TNF)

Yamazaki, Masatoshi; Iwasawa, Haruyo

doi:10.1016/b0-12-475570-4/01335-4

Encyclopedia of Endocrine Diseases 2004

DOI: 10.1016/b0-12-475570-4/01335-4

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Tumor Necrosis Factor (TNF)

Masatoshi Yamazaki

Haruyo Iwasawa

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Differences in Biological Response Modifier-like Activities According to the Strain and Maturity of Bananas

Iwasawa

Yamazaki

2009

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We have studied the neutrophil-increasing effects of fruits and vegetables and their priming effects on cytokine induction. Among fruits, bananas exhibited the most marked priming effects. Therefore, we evaluated possible differences in the biological response modifier (BRM)-like activities of bananas (such as the effects on neutrophil accumulation and macrophage morphology, and the priming effects on cytokine induction), according to their strain and maturity, using a conventional strain and a strain for highland cultivation. As a result, the total intraperitoneal leukocyte count and % neutrophils increased in parallel with the concentration and maturity of banana extracts. These effects were more marked in the highland strain. After the addition of banana extracts, marked macrophage spreading was observed, and morphological changes differed according to the strain and maturity of bananas. The priming effects on TNF-α or IL-12 induction also differed according to the maturity and strain of bananas, and could also be confirmed after oral administration. These results suggest that banana intake is associated with various BRM-like activities, and these effects differ according to the maturity level of the bananas.

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Differences in Biological Response Modifier-like Activities According to the Strain and Maturity of Bananas

Iwasawa

Yamazaki

2009

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Influence of Kiwi Fruit on Immunity and Its Anti-oxidant Effects in Mice

Iwasawa

Morita

Ueda

et al. 2010

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We have been investigating the immunopotentiating activity (biological response modifier (BRM)-like activity) of different fruits and attempting to clarify whether the level of this activity is consistent with the content of vitamins or other major nutrients in these fruit. In this study, we focused on kiwi fruit, which contains vitamin C and polyphenol and has a high BRM-like activity and anti-oxidant activity. We evaluated differences in this activity according to the strain and maturity. To determine the antioxidant effects of oral kiwi fruit intraperitoneal administration, mice were administered kiwi fruit juice. It was found that the BRM-like activity of green kiwi fruit was slightly higher than that of gold kiwi fruit, but the differences were slight between strains and maturity level. After oral administration of kiwi fruit juice to mice, cytokine production increased. The evaluation of urinary oxidative stress markers revealed marked inhibition of in vivo oxidative stress following oral kiwi fruit administration. These results suggest that kiwi fruit intake has beneficial effects on the body, increasing cytokine production and exerting antioxidant effects.

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Tumor Necrosis Factor (TNF)

Cited by 2 publications

References 1 publication

Differences in Biological Response Modifier-like Activities According to the Strain and Maturity of Bananas

Differences in Biological Response Modifier-like Activities According to the Strain and Maturity of Bananas

Influence of Kiwi Fruit on Immunity and Its Anti-oxidant Effects in Mice

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