Details

Autor(en) / Beteiligte

• Renzulli, C
• Galvano, F
• Pierdomenico, L
• Speroni, E
• Guerra, M C

Titel

Effects of rosmarinic acid against aflatoxin B sub(1) and ochratoxin-A-induced cell damage in a human hepatoma cell line (Hep G2)

Ist Teil von

• Journal of applied toxicology, 2004-08, Vol.24 (4), p.289-296

Erscheinungsjahr

2004

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Recent findings have suggested that oxidative damage might contribute to the cytotoxicity and carcinogenicity of aflatoxin B sub(1) (AFB sub(1)). The induction of oxidative stress also plays an important role in the toxicity of another mycotoxin: ochratoxin A (OTA). In this study, the protective effect of rosmarinic acid (Ros A) against AFB sub(1) and OTA-induced cytotoxicity was investigated in a human hepatoma-derived cell line (Hep G2). Rosmarinic acid, a natural phenolic compound contained in many Lamiaceae herbs such as Perilla frutescens, sage, basil and mint, inhibits complement-dependent inflammatory processes and may have therapeutic potential. The ability of Ros A to reduce radical oxygen species (ROS) production, protein and DNA synthesis inhibition and apoptosis caused by the two mycotoxins was also investigated. Our experiments proved the significant cytoprotective effect of Ros A in vitro from OTA- and AFB sub(1)-induced cell damage. In particular, 24-h pretreatment with 50 mu M Ros A inhibited the cytotoxicity of 10 mu M AFB sub(1) (by 45%) and 10 mu M OTA (by 35%) in Hep G2 cells (P < 0.001). Moreover, Ros A dose dependently attenuated ROS production and DNA and protein synthesis inhibition induced by both of the toxins. Similarly, apoptosis cell death was prevented, as demonstrated by reduction of DNA fragmentation and inhibition of caspase-3 activation (P < 0.001).