Differential effects of various soy isoflavone dietary supplements (nutraceuticals) on bacterial growth and human fibroblast viability
Karolina Pierzynowska , Agata Rzeszótko , Aleksandra Blendowska , Ewa Wieczerzak , Sylwia Rodziewicz-Motowidło , Ewa Piotrowska , Grzegorz Węgrzyn
AbstractFlavonoids, polyphenolic compounds present in many food products, affect growth of different bacterial species when tested as purified or synthetic substances. They can also influence gene expression in human cells, like fibroblasts. Here, we asked if soy isoflavone extracts, commonly used in many products sold as anti- menopausal dietary supplements, influence bacterial growth similarly to a synthetic isoflavone, genistein. Four commercially available products were tested in amounts corresponding to genistein concentrations causing inhibition of growth of Vibrio harveyi (a model bacterium sensitive to this isoflavone) and Escherichia coli (a model bacterium resistant to genistein). Differential effects of various extracts on V. harveyi and E. coli growth, from stimulation, to no changes, to inhibition, were observed. Moreover, contrary to genistein, the tested extracts caused a decrease (to different extent) in viability of human dermal fibroblasts. These results indicate that effects of various soy isoflavone extracts on bacterial growth and viability of human cells are different, despite similar declared composition of the commercially available products.
|Journal series||Acta Biochimica Polonica, ISSN 0001-527X, e-ISSN 1734-154X|
|Publication size in sheets||0.5|
|Keywords in English||genistein, soy isoflavone extracts, anti-menopausal dietary supplements, bacterial growth, viability of human cell|
|License||Journal (articles only); published final; ; with publication|
|Publication indicators||: 2016 = 1.159 (2) - 2016=1.491 (5)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.