Neuroprotective properties of ethanolic extract of Citrus unshiu Markovich peel through NADPH oxidase 2 inhibition in chemotherapy‐induced neuropathic pain animal model

The present study aimed to determine the antioxidant effect of Citrus unshiu Markovich (CUM) extract in neuronal cell lines under oxidative stress and to investigate the effect of chemotherapy‐induced peripheral neuropathy (CIPN) on the nociceptive response in a preclinical mice model. We tested the...

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Veröffentlicht in:Phytotherapy research 2021-12, Vol.35 (12), p.6918-6931
Hauptverfasser: Jang, Aelee, Choi, Go‐Eun, Kim, Yoo‐Jeong, Lee, Gil‐Hyun, Hyun, Kyung‐Yae
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container_issue 12
container_start_page 6918
container_title Phytotherapy research
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creator Jang, Aelee
Choi, Go‐Eun
Kim, Yoo‐Jeong
Lee, Gil‐Hyun
Hyun, Kyung‐Yae
description The present study aimed to determine the antioxidant effect of Citrus unshiu Markovich (CUM) extract in neuronal cell lines under oxidative stress and to investigate the effect of chemotherapy‐induced peripheral neuropathy (CIPN) on the nociceptive response in a preclinical mice model. We tested the inhibition of H2O2 in Neuro2A cells treated with CUM. Experimental animals were treated with oxaliplatin to induce CINP, and then administered oral CUM for 4 weeks in order to observe the effect of CUM. Animals were evaluated weekly for thermal hyperalgesia and digital motor nerve conduction velocity (NCV). Lumbar dorsal root ganglia (DRG) isolated from each animal were evaluated through immunochemical and western blot analysis for nerve damage, inflammatory response, and expression of redox signaling factors. The main mechanisms were determined to be decreased inducible nitric oxide synthase (iNOS) production due to the inhibition of NADPH oxidase 2 (NOX2). To determine the functional role of NOX2 in CINP, we administrated CUM into NOX2‐deficient mice with neuropathic pain. Therefore, we suggest that CUM controls the expression levels of inflammatory factors in CINP via NOX2 inactivation. This study demonstrated that a complementary medicine such as CUM might be a potential novel therapeutic agent for the treatment of CINP.
doi_str_mv 10.1002/ptr.7304
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subjects Animal models
Animals
Antineoplastic Agents - adverse effects
Antioxidants
Cell lines
Chemical compounds
Chemotherapy
chemotherapy‐induced peripheral neuropathy
Citrus - chemistry
Citrus unshiu
Citrus unshiu Markovich
CYBB protein
Dorsal root ganglia
Ganglia
Hydrogen peroxide
Hyperalgesia
Hyperalgesia - chemically induced
Hyperalgesia - drug therapy
Inactivation
Inflammation
Inflammatory response
Mice
Models, Animal
NAD(P)H oxidase
NADPH oxidase 2
NADPH Oxidase 2 - antagonists & inhibitors
Nerve conduction
nerve conduction velocity
Neuralgia - chemically induced
Neuralgia - drug therapy
Neuroprotection
Neuroprotective Agents - pharmacology
Nitric oxide
Nitric-oxide synthase
Oxaliplatin
Oxidase
Oxidative stress
Pain
Pain perception
Peripheral neuropathy
Pharmacology
Plant Extracts - pharmacology
reactive oxygen species
title Neuroprotective properties of ethanolic extract of Citrus unshiu Markovich peel through NADPH oxidase 2 inhibition in chemotherapy‐induced neuropathic pain animal model
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