- Butyrate may enhance toxicological defence in primary, adenoma and tumor human colon cells by favourably modulating expression of glutathione S-transferases genes, an approach in nutrigenomics. Pool-Zobel, B.L., Selvaraju, V., Sauer, J., Kautenburger, T., Kiefer, J., Richter, K.K., Soom, M., Wölfl, S. Carcinogenesis (2005)