RESUMEN
Fungal infections represent a serious health problem worldwide. The study evaluated the antifungal activity of 4-chlorobenzyl p-coumarate, an unprecedented semi-synthetic molecule. Docking molecular and assay experiments were conducted to determine the Minimum Inhibitory Concentration (MIC) and Minimum Fungicidal Concentration (MFC), mode of action, effect on growth, fungal death kinetics, drug association, effects on biofilm, micromorphology, and against human keratinocytes. The investigation included 16â strains of Candida spp, including C. albicans, C. krusei, C. glabrata, C. tropicalis, C. dubliniensis, C. lusitaniae, C. utilis, C. rugosa, C. guilhermondi, and C. parapsilosis. Docking analysis predicted affinity between the molecule and all tested targets. MIC and MFC values ranged from 3.9â µg/mL (13.54â µM) to 62.5â µg/mL (217.01â µM), indicating a probable effect on the plasma membrane. The molecule inhibited growth from the first hour of testing. Association with nystatin proved to be indifferent. All concentrations of the molecule reduced fungal biofilm. The compound altered fungal micromorphology. The tested compound exhibited an IC50 of 7.90±0.40â µg/mL (27.45±1.42â µM) for keratinocytes. 4-chlorobenzyl p-coumarate showed strong fungicidal effects, likely through its action on the plasma membrane and alteration of fungal micromorphology, and mildly cytotoxic to human keratinocytes.
Asunto(s)
Antifúngicos , Biopelículas , Candida , Pruebas de Sensibilidad Microbiana , Antifúngicos/farmacología , Antifúngicos/química , Antifúngicos/síntesis química , Humanos , Biopelículas/efectos de los fármacos , Candida/efectos de los fármacos , Relación Estructura-Actividad , Simulación del Acoplamiento Molecular , Queratinocitos/efectos de los fármacos , Estructura Molecular , Relación Dosis-Respuesta a Droga , Ácidos Cumáricos/farmacología , Ácidos Cumáricos/química , Ácidos Cumáricos/síntesis química , Supervivencia Celular/efectos de los fármacosRESUMEN
Geopropolis resins are produced by stingless bees (Meliponinae), developed from the collection of resinous materials, waxes and exudates, from the flora of the region where stingless bees are present, in addition to the addition of clay or earth in its composition. Several biological activities are attributed to Ethanol Extracts of Geopropolis (EEGP). The bioactive properties are associated with the complex chemical composition that the samples have. This work aims to evaluate the biological activities of the EEGP, in order to contribute with a natural therapeutic alternative, to face infections, mainly those caused by resistant strains of Staphylococcus aureus. The EEGP MIC tests showed antibacterial activity against two strains of S. aureus, both at concentrations of 550â µg/mL. The MBC performed with the inhibition values showed that the EEGP has bacteriostatic activity in both strains. Biofilm inhibition rates exhibited an average value greater than 65 % at the highest concentration. The EEGP antioxidant potential test showed good antioxidant activity (IC50) of 11.05±1.55â µg/mL. In the cytotoxicity test against HaCat cells, after 24â hours, EEGP induced cell viability at the three tested concentrations (550â µg/mL: 81.68±3.79 %; 1100â µg/mL: 67.10±3.76 %; 2200â µg/mL: 67.40±1.86 %). In view of the above, the safe use of EEGP from the brazilian northeast could be proven by the cytotoxicity test, and its use as an antioxidant and antibacterial agent has proven to be effective, as an alternative in combating oxidative stress and microorganisms such as S.â aureus, which, through the spread and ongoing evolution of drug resistance, generates an active search for effective solutions.
Asunto(s)
Antibacterianos , Biopelículas , Pruebas de Sensibilidad Microbiana , Staphylococcus aureus , Staphylococcus aureus/efectos de los fármacos , Animales , Abejas , Antibacterianos/farmacología , Antibacterianos/química , Antibacterianos/aislamiento & purificación , Humanos , Biopelículas/efectos de los fármacos , Supervivencia Celular/efectos de los fármacos , Própolis/química , Própolis/farmacología , Antioxidantes/farmacología , Antioxidantes/química , Antioxidantes/aislamiento & purificación , Relación Dosis-Respuesta a DrogaRESUMEN
This study investigates the antifungal and cytotoxic properties of 7-(pentyloxy)-2H-chromen-2-one. Through molecular docking and dynamics simulations, we explored the compound's interactions with fungal cell protein targets. Notably, it exhibited strong affinities for 1,3ß-glucan synthase, squalene epoxidase, δ-14-sterol reductase, 14-α-demethylase, and thymidylate synthase, with binding energies ranging from -100.39 to -73.15 kcal/mol. Molecular dynamics simulations confirmed its stable binding at active targets. The MIC and MFC values ranged from 67.16 µM (15.6 µg/mL) to 537.28 µM (125.0 µg/mL). The compound displayed promising antifungal effects, inhibiting fungal growth for at least 24 hours. Fungal plasma membrane function alteration likely contributed to these antifungal mechanisms. Additionally, the combination of the compound with nystatin, fluconazole, and caspofungin showed indifferent effects on antifungal activity. Cytotoxicity assessment in human keratinocyte cells (HaCaT) revealed an IC50 of 100 µM, which was approximately 1.5 times higher than the MIC for C. krusei. Thus, the compound exhibited strongly in silico and in vitro antifungal activity with low cytotoxicity in HaCaT cells. These findings support its potential as a candidate for further development as an antifungal compound.
Asunto(s)
Antifúngicos , Candida , Humanos , Antifúngicos/farmacología , Antifúngicos/química , Simulación del Acoplamiento Molecular , Fluconazol/farmacología , Umbeliferonas , Pruebas de Sensibilidad MicrobianaRESUMEN
Objective: Evaluate the effect of a multidrug solution, adopted by a referral hospital for cancer to control and treat chemotherapy-induced oral mucositis in rats. Methods: Oral mucositis (OM) was induced by 5-Fluorouracil (5-FU), and the animals were treated with saline (nâ¯=â¯8, G1), 0.12% chlorhexidine (nâ¯=â¯8, G2); and multidrug solution (nâ¯=â¯8, G3). The animals were submitted to clinical and histological analysis of the lesion using mucosal fragments. The animals' food consumption during treatment was also evaluated. Results: Clinical improvement (pâ¯<â¯0.05) was observed in the groups treated with the multidrug solution and 0.12% chlorhexidine digluconate. In G2 and G3, there was a prevalence of reepithelialization covering <50% of the lesion. Evaluation of the inflammatory infiltrate indicated that the G1 treatment permitted an intense inflammatory response in all animals, yet this evaluation parameter was moderate in groups G2 and G3. The G3 group (pâ¯<â¯0.05) presented higher food consumption than the other groups. Conclusions: The multidrug solution improved the clinical and histological parameters of the chemotherapy-induced oral mucositis, as well as promoted an increase in food intake.
RESUMEN
The COVID-19 pandemic has spread rapidly in many countries, overburdening health systems and causing numerous economic and social impacts. Most studies on the subject have focused on epidemiology, diagnosis, and treatment, however, there remains a scientific gap concerning the possibility of reinfection. The purpose of this bibliographic review is to gather information from studies aimed at this possibility, and to clarify what we know so far. It was found that in many situations cured patients are being released from hospitals, however, in some cases, the discharge criteria are not effective. Patients are presenting positive RT-PCR tests. There are several factors that might interfere so that patients cured of COVID-19 continue to test positive, and this would not necessarily represent a case of recurrence, as the test cannot differentiate the viral RNA from the complete virus, which alone is capable of causing the active infection. This review demonstrates that in order to rule out the possibility of COVID-19 reinfection in cured patients, more robust methods need to be adopted as criteria for both clinical discharge and post-hospital follow-up.
RESUMEN
In this literature review, we present the main scientific findings on the antifungal activity of essential oils (EOs) applicable for a new drug formulation to treat oral candidiasis. Seven literature databases were systematically searched for eligible in vitro and clinical trials. Selected articles were screened for biological activity, botanical species, phytochemical composition, study design, and methodological quality. A total of 26 articles were included in the review, of which 21 were in vitro studies and 5 clinical trials. The most promising EOs were obtained from Allium tubeorosum, Cinnamomum cassia, Cinnamomum zeylanicum, and Coriandrum sativum L. Among the phytochemicals, citral and thymol were the most active. Clinical trials indicated that the EOs from Pelargonium graveolens and Zataria multiflora are potentially effective to treat oral candidiasis. Further nonclinical and clinical studies with these EO are warranted to determine their potential use and safety for the treatment of oral candidiasis.
RESUMEN
Introdução: o câncer de cabeça e pescoço apresenta alta incidência no Brasil, e requer um estudo constante de sua distribuição, o que motiva a estudá-lo detalhadamente, buscando entender de que forma esse câncer se comporta na população, avaliando sua distribuição temporal no Brasil, além dos seus principais agravos. Objetivo: identificar as localizações anatômicas e classificações histológicas dos cânceres em cabeça e pescoço, registrados no Brasil, entre os anos de 2000 e 2014. Métodos: trata-se de estudo seccional, com abordagem indutiva, técnica de documentação indireta e procedimento estatístico descritivo, a partir da análise de 220.391 dados secundários dos Registros Hospitalares de Câncer, disponíveis pelo Instituto Nacional de Câncer. As variáveis de interesse foram: a localização do tumor primário e tipo histológico. A escolha pela localização do local do tumor primário foi feita de acordo com a Classificação Internacional das Doenças. Resultados: os locais de maior acometimento do câncer em cabeça e pescoço foram: pele da face (44,2 percento); cavidade oral (16,7 percento); glândula tireoide (8,9 percento); laringe (8,8 percento); encéfalo (5,4 percento) e linfonodos localizados na região de cabeça e pescoço (3,8 percento). Os tipos histológicos mais prevalentes foram: carcinoma de células escamosas (38,0 percento); carcinoma basocelular (27,0 percento); carcinoma papilar (3,70 percento); carcinoma basocelular nodular (2,50 percento) e tumor epitelial maligno (2,50 percento). Conclusão: ocarcinoma de células escamosas foi o tipo histológico mais prevalente de câncer em cabeça e pescoço entre os anos de 2000 e 2014, no Brasil, sendo o sítio de maior acometimento a pele da face(AU)
Introducción: el cáncer de cabeza y cuello presenta alta incidencia en Brasil, y requiere un estudio constante de su distribución, lo que motiva a estudiarlo detalladamente, buscando entender de qué forma ese cáncer se presenta en la población, y evaluando su distribución temporal en Brasil , además de sus principales problemas. Objetivo: identificar las localizaciones anatómicas y clasificaciones histológicas de los cánceres en cabeza y cuello, registrados en Brasil, entre los años 2000 y 2014. Métodos: se trata de estudio seccional, con abordaje inductivo, técnica de documentación indirecta y procedimiento estadístico descriptivo, a partir del análisis de 220 391 datos secundarios de los Registros Hospitalarios de Cáncer disponibles por el Instituto Nacional del Cáncer. Las variables de interés fueron: la localización del tumor primario y tipo histológico. La elección por la localización del lugar del tumor primario se realizó de acuerdo con la Clasificación Internacional de las Enfermedades. Resultados: los lugares de mayor afectación del cáncer en cabeza y cuello fueron: piel de la cara (44,2 por ciento); la cavidad bucal (16,7 por ciento); glándula tiroidea (8,9 por ciento); laringe (8,8 por ciento); encéfalo (5,4 por ciento) y ganglios linfáticos localizados en la región de cabeza y cuello (3,8 por ciento). Los tipos histológicos más prevalentes fueron: carcinoma de células escamosas (38,0 por ciento); carcinoma basocelular (27,0 por ciento); carcinoma papilar (3,70 por ciento); carcinoma basocelular nodular (2,50 por ciento) y tumor epitelial maligno (2,50 por ciento). Conclusiones: el carcinoma de células escamosas fue el tipo histológico más prevalente de cáncer en cabeza y cuello entre los años 2000 y 2014, en Brasil, siendo el sitio de mayor afección la piel de la cara(AU)
Introduction: due to its high incidence in Brazil, head and neck cancer requires permanent study of its distribution, which has motivated the conduct of detailed analyses aimed at understanding the way it manifests in the population, its temporal distribution in the country and the main problems it poses. Objective: identify the anatomical locations and histological classifications of head and neck cancers registered in Brazil between the years 2000 and 2014. Methods: an inductive cross-sectional study was conducted with an indirect documentation technique and descriptive statistical processing. The study was based on the analysis of 220 391 secondary data from Cancer Hospital Registries available from the National Cancer Institute. The variables of interest were location of the primary tumor and histological type. Sorting by primary tumor location followed the International Classification of Diseases. Results: the sites most commonly affected by head and neck cancer were facial skin (44.2 percent), oral cavity (16.7 percent), thyroid gland (8.9 percent), larynx (8.8 percent), brain (5.4 percent) and lymph nodes located in the head and neck region (3.8 percent). The most common histological types were squamous-cell carcinoma (38.0 percent), basal-cell carcinoma (27.0 percent), papillary carcinoma (3.70 percent), nodular basal-cell carcinoma (2.50 percent) and malignant epithelial tumor (2.50 percent). Conclusions: squamous-cell carcinoma was the most prevalent histological type of head and neck cancer between the years 2000 and 2014 in Brazil, facial skin being the most commonly affected site(AU)
Asunto(s)
Humanos , Clasificaciones en Salud/métodos , Interpretación Estadística de Datos , Neoplasias de Cabeza y Cuello/epidemiología , Carcinoma de Células EscamosasRESUMEN
Aim. to evaluate the antifungal potential of the essential oil of cymbopogon citratus by determining the minimum inhibitory concentration (MIC) and the minimum fungicidal concentration (MFC) for candida albicans (ATCC 90029), candida albicans (CBS 562), candida tropicalis (ATCC 705) and candida tropicalis strains (CBS 94), as well as to analyze the possible mechanism of action of the oil through the addition of sorbitol to the culture medium. methods. for the MIC determination, inocula were previously adjusted through spectrophotometry and 100µL were added to the wells of plates already containing the culture medium and 100µL of the serial dilutions of the oil, incubating them in aerobiosis for 24 hours, with subsequent staining by 1 percent TCT. for the MFC, 50µL of the supernatant from the MIC assay wells were dripped onto petri dishes and incubated in aerobiosis for 24 hours. tests were performed in triplicate and data analysed by descriptive statistics. results. It was determined that the MIC for C. albicans was 125 µg/mL while MIC for C. tropicalis was 250 µg/mL, with the essential oil presenting fungicidal effect for both analyzed yeasts. conclusion. the essential oil of cymbopogon citratus does not act at the cellular wall level and demonstrated an antimicrobial effect on candida albicans and candida tropicalis, therefore acting as a fungicide.
Asunto(s)
Humanos , Candida albicans/efectos de los fármacos , Aceites Volátiles/administración & dosificación , Extractos Vegetales/farmacología , Candida tropicalis/efectos de los fármacos , Cymbopogon/química , Antifúngicos/farmacología , Técnicas In Vitro , Aceites Volátiles/farmacología , Aceites Volátiles/química , Extractos Vegetales/química , Resultado del Tratamiento , Cymbopogon/efectos adversos , Cromatografía de Gases y Espectrometría de MasasRESUMEN
Introduction: Von Willebrand's disease is the most common bleeding disorder, and is still underdiagnosed for several reasons, including lack of knowledge about the disease. Objective: to evaluate the knowledge about dental care for patients with von Willebrand's disease in students who attended the last academic year of an undergraduate dental program. Methods: a questionnaire with objective questions was applied to 87 students in order to obtain data on the following variables of interest: gender, term of the program, knowledge about the disease, knowledge about the involved coagulation factor, tests for diagnosis, signs and symptoms, procedures necessary during patient care, and medications that should be avoided in von Willebrand's disease. The data were analyzed using IBM SPSS (21.0) at a significance level of 5 percent. Results: only 21 students (21.14 percent) reported having some knowledge about von Willebrand's disease: 49.02 percent correctly answered that the coagulation factor is involved in von Willebrand's disease, and 29.4 percent correctly answered to the question about the diagnostic tests. Conclusions: students attending the final academic year of an undergraduate dental program have limited knowledge about von Willebrand's disease(AU)
Introducción: la enfermedad de Von Willebrand es el trastorno hemorrágico más común, y todavía está infradiagnosticada por varias razones, incluyendo la falta de conocimiento acerca de la enfermedad. Objetivo: evaluar el conocimiento acerca del cuidado dental para pacientes con la enfermedad de Von Willebrand en los estudiantes que asistieron al último año de un programa de odontología de pregrado. Métodos: se aplicó un cuestionario con preguntas objetivas a 87 estudiantes para obtener datos sobre las siguientes variables de interés: género, término del programa, conocimiento acerca de la enfermedad, conocimiento sobre el factor de coagulación implicado, pruebas para el diagnóstico, signos y síntomas, procedimientos necesarios durante el cuidado de pacientes y los medicamentos que deben evitarse en la enfermedad de Von Willebrand. Los datos fueron analizados utilizando IBM SPSS (21.0) a un nivel de significación del 5 por ciento. Resultados: solo 21 estudiantes (21,14 por ciento) reportaron tener algún conocimiento sobre la enfermedad de Von Willebrand: 49,02 por ciento respondió correctamente cuál es el factor de coagulación que está involucrado en enfermedad de Von Willebrand, y el 29,4 por ciento respondió correctamente a la pregunta sobre las pruebas diagnósticas. Conclusiones: los estudiantes que asisten al último año de un programa de odontología de grado tienen un conocimiento limitado acerca de la enfermedad de Von Willebrand(AU)
Asunto(s)
Humanos , Masculino , Femenino , Atención Odontológica , Atención Odontológica/efectos adversos , Técnicas y Procedimientos Diagnósticos/estadística & datos numéricos , Enfermedades de von Willebrand/diagnóstico , Conocimiento , Atención al Paciente/ética , Encuestas y CuestionariosRESUMEN
Introduction: Von Willebrand's disease is the most common bleeding disorder, and is still underdiagnosed for several reasons, including lack of knowledge about the disease. Objective: to evaluate the knowledge about dental care for patients with von Willebrand's disease in students who attended the last academic year of an undergraduate dental program. Methods: a questionnaire with objective questions was applied to 87 students in order to obtain data on the following variables of interest: gender, term of the program, knowledge about the disease, knowledge about the involved coagulation factor, tests for diagnosis, signs and symptoms, procedures necessary during patient care, and medications that should be avoided in von Willebrand's disease. The data were analyzed using IBM SPSS (21.0) at a significance level of 5 percent. Results: only 21 students (21.14 percent) reported having some knowledge about von Willebrand's disease: 49.02 percent correctly answered that the coagulation factor is involved in von Willebrand's disease, and 29.4 percent correctly answered to the question about the diagnostic tests. Conclusions: students attending the final academic year of an undergraduate dental program have limited knowledge about von Willebrand's disease(AU)
Introducción: la enfermedad de Von Willebrand es el trastorno hemorrágico más común, y todavía está infradiagnosticada por varias razones, incluyendo la falta de conocimiento acerca de la enfermedad. Objetivo: evaluar el conocimiento acerca del cuidado dental para pacientes con la enfermedad de Von Willebrand en los estudiantes que asistieron al último año de un programa de odontología de pregrado. Métodos: se aplicó un cuestionario con preguntas objetivas a 87 estudiantes para obtener datos sobre las siguientes variables de interés: género, término del programa, conocimiento acerca de la enfermedad, conocimiento sobre el factor de coagulación implicado, pruebas para el diagnóstico, signos y síntomas, procedimientos necesarios durante el cuidado de pacientes y los medicamentos que deben evitarse en la enfermedad de Von Willebrand. Los datos fueron analizados utilizando IBM SPSS (21.0) a un nivel de significación del 5 por ciento. Resultados: solo 21 estudiantes (21,14 por ciento) reportaron tener algún conocimiento sobre la enfermedad de Von Willebrand: 49,02 por ciento respondió correctamente cuál es el factor de coagulación que está involucrado en enfermedad de Von Willebrand, y el 29,4 por ciento respondió correctamente a la pregunta sobre las pruebas diagnósticas. Conclusiones: los estudiantes que asisten al último año de un programa de odontología de grado tienen un conocimiento limitado acerca de la enfermedad de Von Willebrand(AU)
Asunto(s)
Humanos , Masculino , Femenino , Atención Odontológica , Atención Odontológica/efectos adversos , Técnicas y Procedimientos Diagnósticos , Enfermedades de von Willebrand/diagnóstico , Conocimiento , Atención al Paciente/ética , Encuestas y CuestionariosRESUMEN
Oral mucositis in oncologic patients is the most undesirable event of the chemotherapeutic treatment. This study aimed to identify damage to the oral cavity resulting from chemotherapy in pediatric patients with acute lymphoblastic leukemia (ALL). This is a prospective study with a sample of 42 children and adolescents evaluated for 10 consecutive weeks after diagnosis. The modified Oral Assessment Guide (OAG) was used, and data were analyzed by Spearman's rank correlation coefficient (α = 5%). Changes to the normal lips and saliva were positively related to an increase in the OAG score during all 10 weeks of evaluation. Alterations to the labial mucosa were correlated with an increase in the OAG score from the 2nd to 10th week, which was also found for changes in the tongue and in the swallowing function in Weeks 1, 6, 8, 9, and 10 and for gum changes from the 5th to 7th week. No significant vocal changes were correlated with the total OAG score at any point during the monitoring period. Changes in lips, cheek and/or palatal mucosa, labial mucosa, and gum areas and in swallowing function were positively correlated with an increase in the severity of oral mucositis in patients with ALL after beginning chemotherapeutic treatment.
Asunto(s)
Antineoplásicos/efectos adversos , Antineoplásicos/uso terapéutico , Mucosa Bucal/fisiopatología , Leucemia-Linfoma Linfoblástico de Células Precursoras/complicaciones , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamiento farmacológico , Estomatitis/diagnóstico , Estomatitis/etiología , Adolescente , Niño , Preescolar , Femenino , Humanos , Lactante , Recién Nacido , Masculino , Estudios ProspectivosRESUMEN
A crescente resistência das leveduras pertencentes ao gênero Candida frente aos antifúngicos sintéticos, atualmente disponíveis no comércio, impulsiona a busca por novos compostos antifúngicos de origem vegetal. Assim, o propósito do presente estudo foi avaliar in vitro a atividade antifúngica dos decoctos de Schinus terebenthifolius Raddi (aroeira) Cinnamomum zeylanicum Breym (canela) e Punica granatum Linn (romã), vendidos por raizeiros em três feiras livres distintas (A, B e C), frente a três espécies de microorganismos do gênero Candida (C. albicans, C. tropicalis e C. krusei). O ensaio para determinação da atividade antifúngica dos produtos naturais foi realizado pelo método da difusão em meio sólido, em triplicata, onde discos de papel de filtro estéreis embebidos em 50 µL dos extratos foram colocados sobre o meio de cultura. Os resultados foram avaliados a partir da mensuração dos diâmetros dos halos de inibição de crescimento fúngico em milímetros (mm), sendo considerada a moda dos valores obtidos. Foi observada atividade antifúngica de S. terebenthifolius Raddi e de C. zeylanicum Breym sobre C. krusei. No entanto, diferenças foram identificadas entre os produtos obtidos nos diferentes locais. O decocto de Punica granatum Linn apresentou atividade antifúngica sobre as três cepas fúngicas utilizadas no estudo. Também foram verificadas diferenças entres os produtos obtidos nas feiras livres, sendo que apenas as amostras de Punica granatum Linn provenientes da feira A foram capazes de inibir o crescimento fúngico de todas as cepas analisadas. Desta forma, conclui-se que todos os produtos avaliados apresentam atividade antifúngica, havendo diferenças relacionadas aos locais de sua obtenção e sensibilidade das cepas ensaiadas(AU)
La resistencia cada vez mayor de levaduras del género candida a los antifúngicos sintéticos disponibles en la actualidad ha llevado a la búsqueda de nuevos compuestos antifúngicos de origen vegetal. El propósito de este estudio fue evaluar la actividad antifúngica in vitro de decocciones de Schinus terebenthifolius Raddi (pimentero brasileño),Cinnamomum zeylanicum Breym (canela) y Punica granatum Linn (granada) sobre tres especies del género Candida (C. albicans, C . tropicalis y C. krusei). Este material vegetal fue vendido por vendedores de hierbas (raizeiros) en tres ferias callejeras distintas (A, B y C). El ensayo para determinar la actividad antifúngica de los productos se realizó por triplicado. Se empleó el método de difusión en medio sólido, en el que discos de papel de filtro estériles fueron empapados en 50 µL de los extractos y colocados en medio de cultivo. Los datos fueron evaluados mediante la medición de los diámetros de los halos de inhibición del crecimiento fúngico, en milímetros, y se consideró la moda de los valores encontrados. Se observó actividad antifúngica de S. terebinthifolius Raddi y C. zeylanicum Breym contra C. krusei, pero fueron identificadas diferencias entre los productos obtenidos en diferentes lugares. La decocción de Punica granatum Linn presentó actividad antifúngica sobre las tres levaduras en estudio. Además, se encontraron diferencias entre los productos adquiridos en las ferias callejeras, pero sólo las muestras de Punica granatum Linn de la feria A fueron capaces de inhibir el crecimiento de hongos de todas las levaduras analizadas. Todos los productos evaluados mostraron actividad antifúngica, pero hubo diferencias en función de la localidad donde los productos fueron obtenidos y de la sensibilidad a las cepas ensayadas(AU)
An increasing resistance of Candida yeasts to the synthetic antifungals currently available has driven the search for new plant-derived antifungal compounds. In this respect, the present study aimed to evaluate the in vitro antifungal activity of decoctions from Schinus terebenthifolius Raddi (Brazilian pepper tree), Cinnamomum zeylanicum Breym (cinnamon) and Punica granatum Linn (pomegranate) against three species of Candida genus (C. albicans, C. tropicalis and C. krusei). Such plant material was sold by herb sellers in three distinct street fairs (A, B and C). The test to determine the products antifungal activity was performed in triplicate by means of the diffusion method on solid medium, in which sterile filter paper discs were soaked in 50 µL of the extracts and then placed on culture medium. Data were assessed by measuring the diameters of halos of fungal growth inhibition, in millimeters (mm), and it was considered the mode of the values found. Antifungal activity of S. terebinthifolius Raddi and C. zeylanicum Breym was observed against C. krusei, but were identified differences among the products obtained in different locations. Punica granatum Linn decoction presented antifungal activity on the three yeasts under study. Also, were found differences among the products acquired in the street fairs, but only the samples of Punica granatum Linn from fair A were able to inhibit fungal growth of all yeasts analyzed. Thus, it is concluded that all the products assessed showed antifungal activity, but differences were found depending on the location where these were obtained and on the sensitivity to the strains assayed(AU)
Asunto(s)
Humanos , Candidiasis Bucal/terapia , Cinnamomum zeylanicum/efectos adversos , Antifúngicos/análisisRESUMEN
A utilização de produtos naturais na odontologia tem se mostrado como uma fonte alternativa no combate às patologias orais, incluindo as infecções fúngicas, causadas, geralmente, por Candida spp. Avaliar a ação antifúngica de tinturas de própolis Apis milifera e romã Punica granatum sobre Candida albicans (ATCC 76618), Candida krusei (ATCC 6538) e Candida tropicalis (ATCC 13803). A ação antifúngica das tinturas foi avaliada pelo método da Concentração Inibitória Mínima em meio de cultura sólido Ágar Saburaud Dextrose (Difco®). Foram confeccionados poços, com 6 mm de diâmetro, destinados a inserção de 50 µL das tinturas. Foram avaliadas seis concentrações seriadas das tinturas, sendo a concentração inicial para a tintura de própolis 200 mg/mL e 300 mg/mL a concentração inicial para a tintura de romã. Posteriormente, as placas de Petri foram incubadas em estufa bacteriológica por 48 h a 37 ºC. A análise dos dados para a Concentração Inibitória Mínima foi feita através da mensuração dos halos de inibição, sendo considerados quando iguais ou superiores a 10 mm de diâmetro. Para a tintura de romã observou-se que as Concentração Inibitória Mínima sobre Candida albicans, Candida krusei e Candida tropicalis foram 9,37 mg/mL, 9,37 mg/mL e 18,75 mg/mL, respectivamente. Em relação à tintura da própolis, constatou-se que apenas em sua forma pura apresentou ação antifúngica sobre Candida krusei e Candida tropicalis, entretanto a mesma ação não foi observada sobre Candida albicans. As tinturas avaliadas apresentam ação antifúngica sobre as cepas avaliadas, exceto a tintura da própolis sobre Candida albicans(AU)
Se ha demostrado que el uso de productos naturales en Estomatología es una fuente alternativa contra las enfermedades orales, incluyendo las infecciones micóticas, generalmente causadas por Candida spp. El objetivo de este trabajo fue evaluar la acción antimicótica de las tinturas a partir del propóleo (Apis milifera) y a partir de pomegranate (Punica granatum) sobre Candida albicans (ATCC 76618), Candida krusei (ATCC 6538) y Candida tropicalis (TCC 13803). La actividad antimicótica de las tinturas fue evaluada por el método Minimum Inhibitory Concentration en Aagar Dextrosa Saburaud (Difco®). Se crearon 6 orificios con un diámetro de 6 mm para la inserción de 50 µL de tinturas. Se evaluaron 6 concentraciones seriadas donde la concentración inicial para las tinturas a partir de propóleo fue de 200 mg/mL y de 300 mg/mL como concentración inicial para la tintura a partir de pomegranate. Posteriormente, los discos de Petri fueron incubados durante 48 h a 37ºC. El análisis de los datos para Minimum Inhibitory Concentration fue realizado midiendo las zonas de inhibición, se consideró inhibición cuando es igual o mayor de 10 mm de diámetro. En el caso de la tintura de pomegranate, se comprobó que la Minimum Inhibitory Concentration en Candida albicans, Candida krusei y Candida tropicalis fueron de 9,37 mg/mL, 9,37 mg/mL y 18,75 mg/mL respectivamente. Para las tinturas a base de propóleo, la acción antimicótica fue verificada solo en la concentración pura sobre Candida krusei y Candida tropicalis, pero no fue observada en Candida albicans. Las tinturas a base de pomegranate y propóleo tuvieron actividad antimicótica sobre las cepas evaluadas, excepto en el caso de la tintura a base de propóleo sobre Candida albicans(AU)
The use of natural products in Dentistry has been shown as an alternative source against oral diseases, including fungi infections, generally caused by Candida spp. The aim was to evaluate the antifungal action of tinctures from propolis (Apis milifera) and from pomegranate (Punica granatum) on Candida albicans (ATCC 76618), Candida krusei (ATCC 6538) and Candida tropicalis (ATCC 13803). The antifungal activity of tinctures was evaluated by Minimum Inhibitory Concentration method on Saburaud Dextrose Agar (Difco®). Six wells were confectioned, with 6 mm of diameter, to the insertion of 50 µL of tinctures. Six serial concentrations were evaluated, been 200 mg/mL the initial concentration for tincture from propolis and 300 mg/mL the initial concentration for tincture from pomegranate. Later, the Petri plates were incubated in bacteriological incubator for 48 h on 37 ºC. Data analysis for Minimum Inhibitory Concentration was conducted by measurement of inhibition zones, been considered inhibited when equal or bigger than 10 mm of diameter. For tincture from pomegranate, was verified that the Minimum Inhibitory Concentration on Candida albicans, Candida krusei and Candida tropicalis were 9.37 mg/mL, 9.37 mg/mL and 18.75 mg/mL, respectively. For tinctures from propolis, the antifungal action was verified only in pure concentration on Candida krusei and Candida tropicalis, but it was not observed on Candida albicans. The tinctures from pomegranate and propolis had antifungal activity on evaluated strains, except for tincture from propolis on Candida albicans(AU)