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Abstract Title:

Improvement of immune cell functions in aged mice treated for five weeks with soybean isoflavones.

Abstract Source:

Ann N Y Acad Sci. 2007 Apr;1100:497-504. PMID: 17460214

Abstract Author(s):

Isabel Baeza, Nuria M de Castro, Carmen Alvarado, Pedro Alvarez, Lorena Arranz, Julián Bayón, Mónica de la Fuente

Article Affiliation:

Department of Animal Physiology, Faculty of Biological Sciences, Complutense University, 28040 Madrid, Spain. mondelaf@bio.ucm.es.

Abstract:

Aging is associated with an impaired immune system as well as with a decline of several hormones, such as estrogens. Dietary phytoestrogens have been proposed as an alternative to hormone replacement therapy. The beneficial action of soybean compounds is probably due to isoflavones, whose role as immunomodulators has been investigated with increasing interest. The aim of the present work was to study whether a 5-week administration of a diet enriched in soybean isoflavones and green tea could influence the immune function of mice that were sham-operated or ovariectomized. Natural killer activity (NK) and lymphoproliferation in response to the mitogens concanavaline A (Con A) and lipopolysaccharide (LPS), were studied in peritoneal leukocytes. Both treatments with soybean or green tea plus soybean were highly effective in improving these immune parameters with respect to control groups. Since the immune system is a marker of health and a predictor of longevity, an adequate treatment with isoflavones could be useful in slowing down the effects of the aging process through an improvement in the two relevant immune functions studied.

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Sayer Ji
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