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1.
Biomed Pharmacother ; 112: 108624, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-30784921

RESUMO

Rheumatoid arthritis (RA) is a chronic autoimmune disease of synovial inflammation and joint destruction. This study reports anti-arthritic potential of opuntioside-I opuntiol, and its gold and silver nanoparticles (NPs) against Complete Freund's Adjuvant (CFA)-induced arthritic rats. The mechanistic studies were performed targeting TLRs (TLR-2 and TLR-4) and cytokines (IL-1ß and TNF-α) expressions to validate their anti-inflammatory and immuno-modulatory response. The nano-formulations were successfully characterized employing Atomic Force Microscopy (AFM) and Dynamic Light Scattering (DLS) analysis. Opuntiol and opuntioside (OP and OPG: 10, 50 and 100 mg/kg) and opuntiol-coated silver and gold NPs (OP-AgNPs and OP-AuNPs: 0.5, 1 and 3 mg/kg) treatments in arthritic rat have shown minimal arthritic score exhibiting mild to moderate articular changes and tissue swelling in ankle joints. Radiographic examination reveals significant reduction in synovitis with improvement in joints degenarative changes in the presence of aforementioned treatments. Likewise, histology of rat ankle joints depicted comparatively lesser influx of inflammatory cells and diminished granulamatous inflammation. Moreover, treatment groups suppressed protein and mRNA expressions of TLRs (TLR-2 and TLR-4) and cytokines (IL-1ß and TNF-α) levels were also significantly declined in the presence of OPG, OP and its NPs comparing to arthritic control. This investigation concludes, the tested compounds and nano-formulations successfully restored the disease progression in CFA-induced arthritic rat owing to their immunomodulatory and anti-inflammatory potentials and can be considered for RA targeted therapy to address the utmost challenges of the disease.


Assuntos
Antirreumáticos/uso terapêutico , Artrite Experimental/tratamento farmacológico , Ácidos Cumáricos/uso terapêutico , Nanopartículas Metálicas/uso terapêutico , Monossacarídeos/uso terapêutico , Receptor 2 Toll-Like/antagonistas & inibidores , Receptor 4 Toll-Like/antagonistas & inibidores , Animais , Antirreumáticos/administração & dosagem , Antirreumáticos/química , Artrite Experimental/imunologia , Artrite Experimental/metabolismo , Ácidos Cumáricos/administração & dosagem , Ácidos Cumáricos/química , Feminino , Adjuvante de Freund , Ouro/química , Nanopartículas Metálicas/administração & dosagem , Nanopartículas Metálicas/química , Monossacarídeos/administração & dosagem , Monossacarídeos/química , Ratos Wistar , Prata/química
2.
Artif Cells Nanomed Biotechnol ; 46(sup1): 597-607, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29381085

RESUMO

Nanomedicines anticipate drug delivery to inflamed tissues in rheumatoid arthritis (RA) with greater efficacy and lesser side effects. This study investigates the anti-arthritic potentials of Hesperidin (HP) loaded in gum acacia (GA) stabilized green silver nanoparticles (AgNPs). Synthesized GA-AgNPs were characterized through UV-vis spectrophotometer, zetasizer and atomic force microscope (AFM). The HP and its loaded NPs were tested for RA in Complete Freund's adjuvant (CFA) induced arthritis model. GA-AgNPs were found in nano-range size with negative charge, spherical shape and loaded increased HP amount. HP loaded GA-AgNPs showed minimal arthritic score exhibiting mild to moderate tissue swelling, reduced degenerative changes along with mild articular changes. Histopathological analysis revealed comparatively lesser influx of inflammatory cells and diminished granulamatous inflammation in ankle joints tissues in the presence of HP loaded GA-AgNPs. RT-PCR revealed that HP loaded GA-AgNPs significantly reduced the TLRs mRNA expression. Results validate GA stabilized green AgNPs as stable nano-cargos for targeted delivery of HP for restoring the progression of RA.


Assuntos
Artrite Reumatoide/tratamento farmacológico , Portadores de Fármacos/química , Goma Arábica/química , Hesperidina/química , Hesperidina/uso terapêutico , Nanopartículas Metálicas/química , Prata/química , Adjuvantes Imunológicos/efeitos adversos , Animais , Artrite Reumatoide/induzido quimicamente , Artrite Reumatoide/genética , Feminino , Regulação da Expressão Gênica/efeitos dos fármacos , Ratos , Ratos Wistar , Receptor 2 Toll-Like/genética , Receptor 4 Toll-Like/genética
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