DEFAR - Departamento de Farmácia
URI permanente desta comunidadehttp://www.hml.repositorio.ufop.br/handle/123456789/530
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Resultados da Pesquisa
Item Anxiolytic effect of Anthemis nobilis L. (roman chamomile) and Citrus reticulata Blanco (tangerine) essential oils using the light-dark test in zebrafish (Danio rerio).(2022) Silveira, Virginia; Rúbio, Karina Taciana Santos; Martucci, Maria Elvira PoletiEthnopharmacological relevance: The anxiety disorders are the most prevalent mental health condition, and anxiety is considered the sixth cause of disability surpassing diabetes mellitus, chronic obstructive pulmonary disease, and osteoarthritis. Besides, the COVID-19 pandemic provided an increase in the number of psychiatric diseases diagnosis in all social layers around the world. About 55%–94% of patients diagnosed with anxiety disorders are treated with benzodiazepines, meanwhile benzodiazepines can promote several adverse effects. In this way, alternative therapies, such as essential oils may offer significant benefits in the treatment of patients with anxiety disorders. However, the anxiolytic effect of these essential oils must be proper evaluated appro- priate as well as the suitable dosage and side effect need further research. Aim of the study: The aim was to evaluate the anxiolytic effect of Roman chamomile (Anthemis nobilis L.) and tangerine (Citrus reticulata Blanco) essential oils using the light-dark test in adult zebrafish (Danio rerio). Material and methods: Both essential oils were analyzed by GC-MS and the major compounds were identified. The anxiolytic effect was evaluated by light-dark test in adult zebrafish. Results: The results showed that roman chamomile essential oil has anxiolytic effect in adult zebrafish, whereas tangerine essential oil tends to reduce anxiety The major compounds of tangerine essential oil were limonene and γ-terpinene, and the major compounds of roman chamomile were pentadecyl-3-methyl-2-butenoate, hexadecyl- 3-methyl-2-butenoate, 1-piperidinol and trans-1-ethyl-3-methyl-cyclopentane. Conclusions: The present study demonstrated that this anxiolytic effect may be attributed to the synergistic effect of the compounds present in roman chamomile essential oil, particularly the major compounds. The roman chamomile essential oil at the highest concentration showed anxiolytic effect. The tangerine essential oil showed a tendency to reduce anxiety, but it was not statistically significative. In addition, roman chamomile and tangerine essential oils did not cause cause alteration in locomotion activity and exploratory ability of the fish.Item A systematic review of drug-carrying nanosystems used in the treatment of leishmaniasis.(2023) Registre, Charmante; Soares, Rodrigo Dian de Oliveira Aguiar; Rúbio, Karina Taciana Santos; Santos, Orlando David Henrique dos; Carneiro, Simone PintoLeishmaniasis is an infectious disease responsible for a huge rate of morbidity and mortality in humans. Chemotherapy consists of the use of pentavalent antimonial, amphotericin B, pentamidine, miltefosine, and paromomycin. However, these drugs are associated with some drawbacks such as high toxicity, administration by parenteral route, and most seriously the resistance of some strains of the parasite to them. Several strategies have been used to increase the therapeutic index and reduce the toxic effects of these drugs. Among them, the use of nanosystems that have great potential as a site-specific drug delivery system stands out. This review aims to compile results from studies that were carried out using first- and second-line antileishmanial drug- carrying nanosystems. The articles referred to here were published between 2011 and 2021. This study shows the promise of effective applicability of drug-carrying nanosystems in the field of antileishmanial therapeutics, with the perspective of providing better patient adherence to treatment, increased therapeutic efficacy, reduced toxicity of conventional drugs, as well as the potential to efficiently improve the treatment of leishmaniasis.Item Interações medicamentosas entre fitoterápicos padronizados pelo Sistema Único de Saúde e medicamentos convencionais.(2022) Rúbio, Karina Taciana Santos; Nascimento, Maria Alice Pereira do; Martucci, Maria Elvira PoletiAs plantas medicinais e os fitoterápicos são alternativas para o tratamento de diversas doenças. O Sistema Único de Saúde (SUS) possui 12 fitoterápicos padronizados na Relação Nacional de Medicamentos Essenciais (RENAME): alcachofra, aroeira, babosa, cáscara-sagrada, espinheira-santa, garra-do-diabo, guaco, hortelã, isoflavona-de-soja, plantago, salgueiro e unha-de-gato. O objetivo deste trabalho foi avaliar os eventos adversos destes fitoterápicos e as possíveis interações medicamentosas resultantes do seu uso concomitante com medicamentos convencionais. O trabalho foi realizado por meio de uma revisão narrativa da literatura no período entre 1995 e 2020. As plantas medicinais e/ou os medicamentos fitoterápicos são constituídos de compostos químicos, que em sua maioria são responsáveis pelas suas variadas ações farmacológicas. A composição química complexa aumenta a possibilidade de interações quando medicamentos convencionais são utilizados concomitantemente. As interações podem ser benéficas ou desfavoráveis, podendo potencializar o efeito de fármacos, reduzir a eficácia, resultar em reações adversas ou não alterar o efeito esperado do fármaco. Ressaltou-se a importância de considerar os fitoterápicos/plantas medicinais com a mesma importância que os medicamentos sintéticos, baseando a conduta clínica em evidências científicas confiáveis, reconhecendo sua eficácia, mas também seus efeitos adversos e a possibilidade de interações medicamentosas tornando, assim, seu uso mais seguro e eficaz.Item Removal of dexamethasone by oxidative processes : structural characterization of degradation products and estimation of the toxicity.(2021) Quaresma, Amanda de Vasconcelos; Rúbio, Karina Taciana Santos; Taylor, Jason Guy; Sousa, Bianca Aline de; Silva, Silvana de Queiroz; Werle, Alceni Augusta; Afonso, Robson José de Cássia FrancoDexamethasone (DEX) belongs to a class of steroid hormones that can potentially be harmful due to their endocrine disrupting properties. The efficient elimination of DEX during the treatment of drinking water is needed to ensure that the health of both human and aquatic species are protected. Thus different oxidative processes were investigated in order to assess the effect of these procedures and conditions on DEX. Aqueous solutions of DEX were treated by conventional chlorination ([NaClO]=10 mg L− 1 ) and advanced oxidative processes (ozonation – [O3]=8 mg L− 1 ; photocatalysis – [TiO2]=120 mg L− 1 and UV-C; photolysis – UV-C). The most and least efficient processes for DEX removal were ozonation (95%) and chlorination (54%), respectively. In total, 16 degradation products were identified and characterized by high-resolution mass spectrometry and only two have been proposed in previous reports. Chemical structures of the degradation products were proposed and alcohol oxidation, ozonolysis and decarboxylation were the main chemical transformations observed. The toxicities of DEX and its derivatives were evaluated by following methods: MTT assay (HepG2 cell), ECOSAR (acute and chronic toxicity) and molecular docking (AutoDock). MTT assay results demonstrated that only a mixture DEX and the chlorinated derivative were toxic at high concentrations. ECOSAR analysis showed that products formed from dehydration and fluoride elimination were more toxic than intact DEX, mainly for fish and Daphnid and to a lesser extent for green algae. The docking study revealed that these degradation products were not capable of making hydrogen bonds with residual amino acids GLN570, GLN642 and CYS736, but were stable at the glucocorticoid receptor indicating the possibility of being toxic to humans.