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Co-nanoencapsulated meloxicam and curcumin improves cognitive impairment induced by amyloid-beta through modulation of cyclooxygenase-2 in mice

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Neural Regeneration Research 2021年第4期16卷 780-786页

作者： Maria Eduarda Ziani Gutierrez Anne Suély Pinto Savall Edina da Luz Abreu Kelly Ayumi Nakama Renata Bem Dos Santos Marina Costa Monteiro Guedes Daiana SilvaÁvila Cristiane Luchese Sandra Elisa Haas Caroline Brandão Quines Simone Pinton Postgraduation Program in Biochemistry Federal University of Pampa(UNIPAMPA)UruguaianaRSBrazil Postgraduation Program in Pharmaceutical Science Federal University of Pampa(UNIPAMPA)UruguaianaRSBrazil Postgraduation Program in Biochemistry and Bioprospecting Federal University of Pelotas(UFPEL)Capão do LeãoRSBrazil

Alzheimer’s disease is a progressive brain disorder and complex mechanisms are involved in the physiopathology of Alzheimer’s ***,there is data suggesting that inflammation plays a role in its development and ***,some non-steroidal antiinflammatory drugs,such as meloxicam,which act by inhibiting cyclooxygenase-2 have been used as neuroprotective agents in different neurodegenerative disease *** purpose of this study was to investigate the effects of co-nanoencapsulated curcumin and meloxicam in lipid core nanocapsules(LCN)on cognitive impairment induced by amyloid-beta peptide injection in *** were prepared by the nanoprecipitation *** Swiss mice received a single intracerebroventricular injection of amyloid-beta peptide aggregates(fragment 25–35,3 nmol/3μL)or vehicle and were subsequently treated with curcumin-loaded LCN(10 mg/kg)or meloxicam-loaded LCN(5 mg/kg)or meloxicam+curcumin-co-loaded LCN(5 and 10 mg/kg,respectively).Treatments were given on alternate days for 12 days(i.e.,six doses,once every 48 hours,by intragastric gavage).Our data showed that amyloid-beta peptide infusion caused long-term memory deficits in the inhibitory avoidance and object recognition tests in *** the inhibitory avoidance test,both meloxicam and curcumin formulations(oil or co-loaded LCN)improved amyloid-beta-induced memory impairment in ***,only meloxicam and curcumin-co-loaded LCN attenuated non-aversive memory impairment in the object recognition ***,the beneficial effects of meloxicam and curcuminco-loaded LCN could be explained by the anti-inflammatory properties of these drugs through cortical cyclooxygenase-2 *** study suggests that the neuroprotective potential of meloxicam and curcumin co-nanoencapsulation is associated with cortical cyclooxygenase-2 *** study was approved by the Committee on Care and Use of Experimental Animal Resources,the Federal University of Pampa,Brazil(app

关键词： Alzheimer’s disease curcumin cyclooxygenase-2 lipid core nanocapsules meloxicam memory rats inflammation

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