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Depression: 21st Century Solutions + The Dark Side of Wheat

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Abstract Title:

Naringenin mitigates titanium dioxide (TiO)-induced chronic arthritis in mice: role of oxidative stress, cytokines, and NFκB.

Abstract Source:

Inflamm Res. 2018 Dec ;67(11-12):997-1012. Epub 2018 Oct 28. PMID: 30370484

Abstract Author(s):

Marília F Manchope, Nayara A Artero, Victor Fattori, Sandra S Mizokami, Dimitrius L Pitol, João P M Issa, Sandra Y Fukada, Thiago M Cunha, José C Alves-Filho, Fernando Q Cunha, Rubia Casagrande, Waldiceu A Verri

Article Affiliation:

Marília F Manchope

Abstract:

OBJECTIVE: To evaluate the effect and mechanisms of naringenin in TiO-induced chronic arthritis in mice, a model resembling prosthesis and implant inflammation.

TREATMENT: Flavonoids are antioxidant and anti-inflammatory molecules with important anti-inflammatory effect. Mice were daily treated with the flavonoid naringenin (16.7-150 mg/kg, orally) for 30 days starting 24 h after intra-articular knee injection of 3 mg of TiO.

METHODS: TiO-induced arthritis resembles cases of aseptic inflammation induced by prosthesis and/or implants. Mice were stimulated with 3 mg of TiOand after 24 h mice started to be treated with naringenin. The disease phenotype, treatment toxicity, histopathological damage, oxidative stress, cytokine expression and NFκB were evaluated after 30 days of treatment.

RESULTS: Naringenin inhibited TiO-induced mechanical hyperalgesia (96%), edema (77%) and leukocyte recruitment (74%) without inducing toxicity. Naringenin inhibited histopathological index (HE, 49%), cartilage damage (Toluidine blue tibial staining 49%, and proteoglycan 98%), and bone resorption (TRAP-stained 73%). These effects were accompanied by inhibition of oxidative stress (gp9193%, NBT 83%, and TBARS 41%) cytokine mRNA expression (IL-33 82%, TNFα 76%, pro-IL-1β 100%, and IL-6 61%), and NFκB activation (100%).

CONCLUSION: Naringenin ameliorates TiO-induced chronic arthritis inducing analgesic and anti-inflammatory responses with improvement in the histopathological index, cartilage damage, and bone resorption.

Study Type : Animal Study

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Sayer Ji
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Depression: 21st Century Solutions + The Dark Side of Wheat

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