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The nephroprotective effect of ellagic acid against diclofenac-induced renal injury in male rats: role of Nrf2/HO-1 and NF-κB/TNF-α pathways

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Abstract

Despite the promising effect of the nonsteroidal anti-inflammatory drug (NSAIDs) on controlling the chronic symptoms of different diseases, their toxicity has restricted the long-term administration of these agents. The lack of suitable substitution provides opportunities for innovation of combined-modality strategies that could reduce the toxic side effects of these drugs. In the present study, we aimed to evaluate the protective effect of ellagic acid, a phenolic compound found in plants, on diclofenac-induced nephrotoxicity. The results of the treatment of 32 Wistar rats with diclofenac (0 mg/Kg) and/or ellagic acid (10 mg/Kg) for seven days showed that, unlike diclofenac that shifted the ratio of the redox system in favor of oxidative stress, ellagic acid reduced the tissue levels of malondialdehyde (MDA), protein carbonyl (PC) and diminished serum nitrite content. Moreover, through upregulating nuclear factor-erythroid factor 2-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1), ellagic acid might increase the activity and the tissue levels of several antioxidant enzymes such as catalase (CAT), superoxidase dismutase (SOD), glutathione peroxidase (GPx), and glutathione (GSH) in diclofenac-treated rats. This phenolic agent also prevented diclofenac-mediated inflammatory responses by suppressing the expression of nuclear factor (NK)-κB/tumor necrosis factor (TNF)-α and reducing the number of infiltrated lymphocytes in the kidney tissue. Taken together, our study demonstrated that ellagic acid may produce a protective effect against diclofenac-induced renal failure by exerting both antioxidant and anti-inflammatory properties. This finding indicates that this agent might be a valuable candidate to be used alongside NSAIDs such as diclofenac to alleviate their side effects.

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Abbreviations

COX:

cyclooxygenase

PG:

prostaglandin

NSAID:

non-steroidal anti-inflammatory drug

SOD:

superoxide dismutase

CAT:

catalase

GPx:

glutathione peroxidase

MDA:

malondialdehyde

BUN:

blood urea nitrogen

CR:

creatinine

UA:

uric acid

sGOT:

serum glutamic oxaloacetic transaminase

PAC:

plasma antioxidant capacity

TPTZ:

trypyridyl-s-triazine

NO:

nitrite oxide

PC:

protein carbonyl

DNPH:

2,4-dinitrophenylhydrazine

NBT:

nitro blue tetrazolium

DTNB:

5,5-dithiobis-2- nitrobenzoic acid. TNF-α, tumor necrosis factor alpha

NF-κB:

nuclear factor-κB

HO-1:

heme oxygenase 1

Nrf2:

nuclear factor erythroid 2-related factor 2

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Acknowledgements

The authors gratefully acknowledge the Iran university of medical sciences for contributing financially. Declarations.

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Correspondence to Ali Nouri.

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The authors declare that they have no competing interests.

Saeed Karimi-Matloub and Rasoul Namavari these authors are considered as the first author.

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Karimi-Matloub, S., Namavari, R., Hatefi-Hesari, F. et al. The nephroprotective effect of ellagic acid against diclofenac-induced renal injury in male rats: role of Nrf2/HO-1 and NF-κB/TNF-α pathways. Biologia 77, 3633–3643 (2022). https://doi.org/10.1007/s11756-022-01217-1

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  • DOI: https://doi.org/10.1007/s11756-022-01217-1

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