Safety assessment of potential food ingredients in canine hepatocytes

Zhang LW, Koci J, Jeffery B2, Riviere JE, Monteiro-Riviere NA
Source: Food Chem Toxicol
Publication Date: (2015)
Issue: 78: 105-15
Research Area:
Cells used in publication:
Hepatocyte, rat
Species: rat
Tissue Origin: liver
Hepatocyte, human
Species: human
Tissue Origin: liver
Hepatocyte, canine
Species: canine
Tissue Origin:
Culture Media:
This research aimed to develop in vitro methods to assess hazard of canine food ingredients. Canine hepatocytes were harvested and cell viability of clove-leaf oil (CLO), eugenol (EUG), lemongrass oil (LGO), guanosine monophosphate (GMP), inosine monophosphate (IMP), sorbose, ginger-root extract (GRE), cinnamon-bark oil (CBO), cinnamaldehyde (CINA), thymol oil (TO), thymol (THYM), and citric acid were assessed with positive controls: acetaminophen (APAP), aflatoxin B1 and xylitol. Molecular Toxicology PathwayFinder array (MTPF) analyzed toxicity mechanisms for LGO. LC50 for APAP was similar among human (3.45), rat (2.35), dog (4.26?mg/ml). Aflatoxin B1 had an LC50 of 4.43 (human), 5.78 (rat) and 6.05 (dog) µg/ml; xylitol did not decrease viability. LC50 of CLO (0.185?±?0.075(SD)), EUG (0.165?±?0.112), LGO (0.220?±?0.012), GRE (1.54?±?0.31) mg/ml; GMP (166.03?±?41.83), GMP?+?IMP (208.67?±?15.27) mM; CBO (0.08?±?0.03), CINA (0.11?±?0.01), TO (0.21?±?0.03), THYM (0.05?±?0.01), citric acid (1.58?±?0.08) mg/ml, while sorbose was non-toxic. LGO induced upregulation of 16 and down-regulation of 24 genes, which CYP and heat shock most affected. These results suggest that in vitro assays such as this may be useful for hazard assessment of food ingredients for altered hepatic function.