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Protective effects of lemon and orange peels and olive oil on doxorubicin-induced myocardial damage via inhibition of oxidative stress and inflammation pathways.

Frontiers in pharmacology
May 5, 2025
Amal I El-Refaiy et al. (6 authors)
Journal ArticleAnimal Study
Study Details

Study Goal

The researchers aimed to evaluate the cardioprotective effects of olive oil against doxorubicin-induced myocardial damage in rats.

Results Summary

Olive oil significantly mitigated doxorubicin-induced cardiac toxicity by reducing oxidative stress, apoptosis, and inflammation, providing the most substantial protection among the tested compounds.

Population

Adult male albino rats

Effective Dosage

Not specified

Duration

28 days

Interactions

None mentioned

Extracted Claims (36)
InterventionDirectionEndpointPopulationDosageImpactClaim #
Doxorubicin (DOX)
increase
cardiac damage
rats
-
showed significant functional and structural cardiac damage
#1
Doxorubicin (DOX)
increase
AST
rats
-
elevated
#2
Doxorubicin (DOX)
increase
LDH
rats
-
elevated
#3
Doxorubicin (DOX)
increase
CK
rats
-
elevated
#4
Doxorubicin (DOX)
increase
cTnT
rats
-
elevated
#5
Doxorubicin (DOX)
increase
NO
rats
-
elevated
#6
Doxorubicin (DOX)
increase
MDA
rats
-
elevated
#7
Doxorubicin (DOX)
increase
Bax
rats
-
elevated
#8
Doxorubicin (DOX)
increase
caspase 3
rats
-
elevated
#9
Doxorubicin (DOX)
increase
NFκB
rats
-
elevated
#10
Doxorubicin (DOX)
increase
TNFα
rats
-
elevated
#11
Doxorubicin (DOX)
increase
IL1β
rats
-
elevated
#12
Doxorubicin (DOX)
decrease
SOD
rats
-
reduced
#13
Doxorubicin (DOX)
decrease
CAT
rats
-
reduced
#14
Doxorubicin (DOX)
decrease
GPx
rats
-
reduced
#15
Doxorubicin (DOX)
decrease
Bcl2
rats
-
reduced
#16
Doxorubicin (DOX)
increase
myocardial necrosis
rats
-
exhibited
#17
Doxorubicin (DOX)
increase
inflammatory infiltration
rats
-
exhibited
#18
Doxorubicin (DOX)
increase
mitochondrial damage
rats
-
exhibited
#19
Doxorubicin (DOX)
increase
myofibril atrophy
rats
-
exhibited
#20
orange (OP) peel
decrease
DOX-induced cardiac toxicity
rats
-
mitigated
#21
lemon (LP) peel
decrease
DOX-induced cardiac toxicity
rats
-
mitigated
#22
olive oil (OO)
decrease
DOX-induced cardiac toxicity
rats
-
mitigated
#23
olive oil (OO)
decrease
DOX-induced cardiac toxicity
rats
-
providing the most substantial protection
#24
orange (OP) peel
decrease
DOX-induced cardiac toxicity
rats
-
can reduce
#25
lemon (LP) peel
decrease
DOX-induced cardiac toxicity
rats
-
can reduce
#26
olive oil (OO)
decrease
DOX-induced cardiac toxicity
rats
-
can reduce
#27
orange (OP) peel
decrease
oxidative stress
rats
-
decreasing
#28
lemon (LP) peel
decrease
oxidative stress
rats
-
decreasing
#29
olive oil (OO)
decrease
oxidative stress
rats
-
decreasing
#30
orange (OP) peel
decrease
apoptosis
rats
-
decreasing
#31
lemon (LP) peel
decrease
apoptosis
rats
-
decreasing
#32
olive oil (OO)
decrease
apoptosis
rats
-
decreasing
#33
orange (OP) peel
decrease
inflammation
rats
-
decreasing
#34
lemon (LP) peel
decrease
inflammation
rats
-
decreasing
#35
olive oil (OO)
decrease
inflammation
rats
-
decreasing
#36
Abstract

BACKGROUND/AIM: Compounds originating from plants, especially citrus fruits and olive oil, have anti-inflammatory, cardioprotective, and antioxidant characteristics. Doxorubicin (DOX), an anthracycline antineoplastic, induces cardiotoxicity by generating free radicals. This study aimed to evaluate the cardioprotective effects of orange (OP) and lemon (LP) peels and olive oil (OO) against DOX-induced myocardial damage in rats. METHODS: Thirty adult male albino rats were randomly assigned to five groups, with six rats in each group. The control group was labeled Group I (Cnt), while Group II (DOX) got DOX intraperitoneally. Groups III, IV, and V were given a combination of DOX with OP, LP, or OO, respectively. After 28 days, cardiac biomarkers (AST, LDH, CK, cTnT), oxidative stress markers (NO, MDA), antioxidant enzyme activities (SOD, CAT, GPx), apoptotic genes (Bax, caspase 3, Bcl2), NFκB and inflammatory cytokines (TNFα, IL1β) were assessed. Histopathological analysis of the heart was also conducted. RESULTS: DOX-treated rats showed significant functional and structural cardiac damage, characterized by elevated AST, LDH, CK, cTnT, NO, MDA, Bax, caspase 3, NFκB, TNFα, IL1β and reduced SOD, CAT, GPx, and Bcl2 levels. These rats exhibited myocardial necrosis, inflammatory infiltration, mitochondrial damage, and myofibril atrophy. Treatment with OP, LP, or OO mitigated these effects, with OO providing the most substantial protection. CONCLUSION: These findings suggest that OP, LP, or OO can reduce DOX-induced cardiac toxicity by decreasing oxidative stress, apoptosis, and inflammation.

Study Links
Quality Scores
SafetyNot Assessed
Efficacy85/10
Quality75/10
Research Impact Scores
APT Score0.05
Weight Score1.25
Normalized Score0.69
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