Original contribution
Lipid peroxidation measured as thiobarbituric acid-reactive substances in tissue slices: characterization and comparison with homogenates and microsomes

https://doi.org/10.1016/0891-5849(88)90023-8Get rights and content

Abstract

Liver slices were used to measure, lipid peroxidation induced by bromotrichloromethane, tert-butyl hydroperoxide (t-BOOH), or ferrous iron. The responses of liver homogenates and microsomes to oxidative conditions were compared with the response of tissue slices. Lipid peroxidation was evaluated by the production of thiobarbituric acid-reactive substances (TBARS). As was observed in homogenates and microsomes, TBARS production by liver slices depended upon the amount of tissue, the incubation time, inducer, the amount of inducer, and the presence of antioxidant. Control liver slices incubated at 37°C for 2 h produced 19 nmol of TBARS per g of liver. When slices were incubated in the presence of 1 mM BrCC13, 1 mM t-BOOH, or 50 μM ferrous iron, TBARS production increased 4.6-, 8.2-, or 6.7-fold over the control value, respectively. Comparable induction of TBARS by liver homogenates and microsomes was observed when these preparations were incubated with the same inducers. Addition of 5 μM butylated hydroxytoluene (BHT)_prevented the induction of TBARS by 50 μM ferrous iron byliver slices. The results indicate the usefulness of tissue slices to measure lipid peroxidation. The usefulness of tissue slices is emphasized when a number of compounds or tissues are studied and tissue integrity is desired as in toxicological, pharmacological, and nutritional studies where reduced numbers of experimental animals is a relevant issue.

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