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1.
Molecules ; 26(11)2021 Jun 02.
Artigo em Inglês | MEDLINE | ID: mdl-34199466

RESUMO

Inflammatory bowel disease (IBD) is a chronic inflammatory condition of the gastrointestinal tract with an incompletely understood pathogenesis. Long-standing colitis is associated with increased risk of colon cancer. Despite the availability of various anti-inflammatory and immunomodulatory drugs, many patients fail to respond to pharmacologic therapy and some experience drug-induced adverse events. Dietary supplements, particularly saffron (Crocus sativus), have recently gained an appreciable attention in alleviating some symptoms of digestive diseases. In our study, we investigated whether saffron may have a prophylactic effect in a murine colitis model. Saffron pre-treatment improved the gross and histopathological characteristics of the colonic mucosa in murine experimental colitis. Treatment with saffron showed a significant amelioration of colitis when compared to the vehicle-treated mice group. Saffron treatment significantly decreased secretion of serotonin and pro-inflammatory cytokines, such as TNF-α, IL-1ß, and IL-6, in the colon tissues by suppressing the nuclear translocation of NF-κB. The gut microbiome analysis revealed distinct clusters in the saffron-treated and untreated mice in dextran sulfate sodium (DSS)-induced colitis by visualization of the Bray-Curtis diversity by principal coordinates analysis (PCoA). Furthermore, we observed that, at the operational taxonomic unit (OTU) level, Cyanobacteria were depleted, while short-chain fatty acids (SCFAs), such as isobutyric acid, acetic acid, and propionic acid, were increased in saffron-treated mice. Our data suggest that pre-treatment with saffron inhibits DSS-induced pro-inflammatory cytokine secretion, modulates gut microbiota composition, prevents the depletion of SCFAs, and reduces the susceptibility to colitis.


Assuntos
Bactérias/classificação , Produtos Biológicos/administração & dosagem , Colite/tratamento farmacológico , Crocus/química , Sulfato de Dextrana/efeitos adversos , Microbiota/efeitos dos fármacos , Administração Oral , Animais , Bactérias/efeitos dos fármacos , Bactérias/genética , Bactérias/isolamento & purificação , Produtos Biológicos/farmacologia , Colite/induzido quimicamente , Colite/imunologia , Colite/patologia , Citocinas/metabolismo , Modelos Animais de Doenças , Regulação para Baixo , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Filogenia , Profilaxia Pré-Exposição , Serotonina/metabolismo , Resultado do Tratamento
2.
Nutrients ; 11(5)2019 04 26.
Artigo em Inglês | MEDLINE | ID: mdl-31027364

RESUMO

Saffron is a natural compound that has been used for centuries in many parts of the world as a food colorant and additive. It was shown to have the ability to mitigate various disorders through its known anti-inflammatory and anti-oxidant properties. Several studies have shown the effectiveness of saffron in the treatment of various chronic diseases like inflammatory bowel diseases, Alzheimer's, rheumatoid arthritis as well as common malignancies of the colon, stomach, lung, breast, and skin. Modern day drugs generally have unwanted side effects, which led to the current trend to use naturally occurring products with therapeutic properties. In the present review, the objective is to systematically analyze the wealth of information regarding the potential mechanisms of action and the medical use of saffron, the "golden spice", especially in digestive diseases. We summarized saffron influence on microbiome, molecular pathways, and inflammation in gastric, colon, liver cancers, and associated inflammations.


Assuntos
Carotenoides/farmacologia , Crocus/química , Gastroenteropatias/prevenção & controle , Extratos Vegetais/farmacologia , Especiarias/análise , Carotenoides/química , Carotenoides/uso terapêutico , Gastroenteropatias/tratamento farmacológico , Microbioma Gastrointestinal/efeitos dos fármacos , Humanos , Inflamação/tratamento farmacológico , Extratos Vegetais/química , Extratos Vegetais/uso terapêutico
3.
J Photochem Photobiol B ; 162: 199-207, 2016 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-27380295

RESUMO

The naturally occurring biomolecules present in the plant extracts have been identified to play an active role in the single step formation of nanoparticles with varied morphologies and sizes which is greener and environmentally benign. In the present work, spherical zinc oxide nanoparticles (ZnO NPs) of 2-4nm size were synthesized using aqueous extract of fallen Jacaranda mimosifolia flowers (JMFs), treated as waste. The microwave assisted synthesis was completed successfully within 5min. Thereafter, phase identification, morphology and optical band gap of the synthesized ZnO NPs were done using X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM) and UV-Visible spectroscopy techniques. The composition of JMFs extract was analyzed by gas chromatography-mass spectrometry (GC-MS) and the ZnO NPs confirmation was further explored with fourier transform infrared spectroscopy (FTIR). The GC-MS results confirmed the presence of oleic acid which has high propensity of acting as a reducing and capping agent. The UV-Visible data suggested an optical band gap of 4.03eV for ZnO NPs indicating their small size due to quantum confinement. Further, facet specific adsorption of oleic acid on the surface of ZnO NPs was studied computationally to find out the impact of biomolecules in defining the shape and size of NPs. The viability of gram negative Escherichia coli and gram positive Enterococcus faecium bacteria was found to be 48% and 43%, respectively at high concentration of NPs.


Assuntos
Bignoniaceae/química , Flores/química , Nanopartículas , Nanotecnologia , Extratos Vegetais/química , Óxido de Zinco/química , Óxido de Zinco/farmacologia , Adsorção , Antibacterianos/síntese química , Antibacterianos/química , Antibacterianos/farmacologia , Técnicas de Química Sintética , Escherichia coli/efeitos dos fármacos , Modelos Moleculares , Tamanho da Partícula , Óxido de Zinco/síntese química
4.
Int J Orthod Milwaukee ; 26(4): 19-22, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-27029087

RESUMO

Class II division 1 malocclusion is the most common malocclusion. It shows specific clinical characteristics such as large overiet and deep overbite resulting in a soft tissue profile imbalance. Majority of the patients with class II division 1 malocclusions have an underlying skeletal discrepancy between the maxilla and mandible. The treatment of skeletal class II division 1 malocclusion is done taking into consideration the age, growth potential, severity of malocclusion, and compliance of patient with treatment. Myofunctional appliances can be successfully used to treat growing patients with class II division 1 malocclusion. This article presents a discussion on successful treatment of class II division 1 malocclusion with growth modification approach using twin block appliances.


Assuntos
Má Oclusão Classe II de Angle/terapia , Desenho de Aparelho Ortodôntico , Aparelhos Ortodônticos Funcionais , Sobremordida/terapia , Cefalometria/métodos , Criança , Humanos , Masculino , Mandíbula/crescimento & desenvolvimento , Avanço Mandibular/instrumentação , Terapia Miofuncional/instrumentação , Técnica de Expansão Palatina/instrumentação , Planejamento de Assistência ao Paciente
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