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. Author manuscript; available in PMC: 2011 Apr 1.
Published in final edited form as: Toxicol Appl Pharmacol. 2010 Feb 1;244(1):57–65. doi: 10.1016/j.taap.2010.01.013

Table 2.

Examples of in vivo models of hepatoprotection using Nrf2 chemical activators.

Reference Model Result
Reddy et al., 1982 Dietary pretreament with
BHA of mice exposed to
methylazoxymethanol
acetate
BHA decreased mortality and liver
necrosis in mice exposed to
methylazoxymethanol acetate
Hazelton et al., 1986 Dietary pretreament with
BHA of mice exposed to
acetaminophen
BHA decreased acetaminophen-
induced hepatotoxicity and
increased hepatic GSH and Ugt
enzyme activity.
Kensler et al., 1987 Pretreament of rats with
oltipraz exposed to aflatoxin
Oltipraz-treated rats had
decreased hepatocarcinogenicity
Liu et al., 1993a Pretreatment of mice with
oleanolic acid exposed to
acetaminophen
Oleanolic acid decreased acute
liver injury, decreased glutathione
conjugate formation, and increased
glucuronide conjugate formation
Liu et al., 1993b Pretreatment of mice with
oleanolic acid exposed to
cadmium
Oleanolic acid decreased liver
injury.
Liu et al., 1994a Pretreatment of mice with
oleanolic acid exposed to
various hepatotoxicants
Oleanolic acid decreased liver
injury from carbon tetrachloride,
cadmium, and acetaminophen, but
not allyl alcohol
Liu et al., 1994b Effect of 10 oleanane-type
triterpenoid compounds on
carbon tetrachloride,
acetaminophen, and
cadmium hepatotoxicity
Ursolic acid and oleanolic acid
decreased liver injury from carbon
tetrachloride, acetaminophen, and
cadmium.
Liu et al., 1995a Effect of oleanolic acid on
chemical-induced liver
injury in mice
Oleanolic acid protected from
bromobenzene, acetaminophen,
carbon tetracholoride,
thioacetamide, furosemide,
phalloidin, colchicine, cadmium
chloride, and lipopolysaccharide
Wang et al., 1999 BHA pretreatment of rats
with hepatitis B virus
exposed to aflatoxin
BHA reduced hepatic carcinomas,
adenomas and oxidative stress,
while increasing Gst and Nqo1
activities.
Kensler et al., 2000 Oltipraz treatment of
residents of China exposed
to high dietary
concentrations of aflatoxin
Reduction in the urinary excretion
of the primary oxidative metabolite
of aflatoxin B1, namely aflatoxin
M1
Yates et al., 2006 CDDO-Im pretreatment of
rats exposed to aflatoxin
CDDO-Im decreased aflatoxin
adduct formation,
hepatocarcinogenesis, and
induced Gst and aflatoxin aldehyde
reductase protein expression.
Osburn et al., 2008 CDDO-Im pretreatment of
wild-type and Nrf2-null mice
administered ConA
CDDO-Im protected wild-type but
not Nrf2-null mice from ConA-
induced inflammatory hepatic
injury.
Tanaka et al., 2009 Oltipraz pre- and post-
treated mice administered
ANIT
Oltipraz protected mice from ANIT-
induced cholestasis.
Reisman et al., 2009a Oleanolic acid pretreatment
of wild-type and Nrf2-null
mice administered
acetaminophen
Oleanolic acid protected wild-type
mice more than Nrf2-null mice from
acetaminophen-induced
hepatotoxicity
Reisman et al., 2009b CDDO-Im pretreatment of
wild-type and Nrf2-null mice
administered
acetaminophen
CDDO-Im protected wild-type but
not Nrf2-null mice from
acetaminophen-induced
hepatotoxicity
Shin et al., 2009 CDDO-Im treatment of wild-
type and Nrf2-null mice
given a high-fat diet
CDDO-Im reduced increases in
body weight, adipose mass, and
hepatic lipid accumulation in wild-
type mice but not in Nrf2-null mice.