Aqueous Extract of Brazilian Green Propolis: Primary Components, Evaluation of Inflammation and Wound Healing by Using Subcutaneous Implanted Sponges

Propolis is a chemically complex resinous bee product which has gained worldwide popularity as a means to improve health condition and prevent diseases. The main constituents of an aqueous extract of a sample of green propolis from Southeast Brazil were shown by high performance liquid chromatography/mass spectroscopy/mass spectroscopy to be mono- and di-O-caffeoylquinic acids; phenylpropanoids known as important constituents of alcohol extracts of green propolis, such as artepillin C and drupanin were also detected in low amounts in the aqueous extract. The anti-inflammatory activity of this extract was evaluated by determination of wound healing parameters. Female Swiss mice were implanted subcutaneously with polyesther-polyurethane sponge discs to induce wound healing responses, and administered orally with green propolis (500 mg kg−1). At 4, 7 and 14 days post-implantation, the fibrovascular stroma and deposition of extracellular matrix were evaluated by histopathologic and morphometric analyses. In the propolis-treated group at Days 4 and 7 the inflammatory process in the sponge was reduced in comparison with control. A progressive increase in cell influx and collagen deposition was observed in control and propolis-treated groups during the whole period. However, these effects were attenuated in the propolis-treated group at Days 4 and 7, indicating that key factors of the wound healing process are modulated by propolis constituents

Indicadores da origem botânica da própolis: Importância e perspectivas

O objetivo do presente trabalho foi reunir informações a respeito da origem botânica da própolis originária de países de clima temperado e de clima tropical, demonstrando de que formas esses conhecimentos podem contribuir para o uso racional do produto. Foram enfocados aspectos relacionados às secreções de resinas em estruturas florais, possibilidades e limitações do uso de metabólitos e de estruturas secretoras na identificação da origem botânica da própolis, síntese e alocação de compostos secundários nos vegetais, além da relevância das relações Apis mellifera x Baccharis spp. (Asteraceae)

Indicadores da origem botânica da própolis: Importância e perspectivas

O objetivo do presente trabalho foi reunir informações a respeito da origem botânica da própolis originária de países de clima temperado e de clima tropical, demonstrando de que formas esses conhecimentos podem contribuir para o uso racional do produto. Foram enfocados aspectos relacionados às secreções de resinas em estruturas florais, possibilidades e limitações do uso de metabólitos e de estruturas secretoras na identificação da origem botânica da própolis, síntese e alocação de compostos secundários nos vegetais, além da relevância das relações Apis mellifera x Baccharis spp. (Asteraceae)

Avaliação €œin vitro€ do efeito antiviral do acetato de bauer-7-en-3b -ILA, o principal constituinte de uma amostra de própolis brasileira, contra o alphaherpesvirus

O crescente interesse na busca por substâncias que apresentem atividade antiviral se deve, entre outros fatores, à dificuldade de tratamento de infecções virais, tanto em virtude da característica de latência viral quanto pelo surgimento de novos vírus. O triterpenóide acetato de bauer-7-en-3b-ila (BA) foi previamente isolado do extrato clorofórmico de uma amostra de própolis coletada em Minas Gerais, região sudeste do Brasil (TEIXEIRA et al., 2006). A atividade antiviral desta substância contra o herpesvírus bovino tipo 1 (BoHV-1) e o herpesvírus suíno tipo 1 (SuHV-1) foi investigada através da infecção de culturas de células de rim bovino (MDBK) e de células de rim de macaco verde africano (VERO). O efeito citotóxico do triterpenóide foi previamente avaliado e as concentrações máximas não tóxicas foram 20µg mL-1 e 15µg mL-1 para células VERO e MDBK, respectivamente. Os resultados mostraram atividade antiviral contra SuHV-1 (p<0,05), porém não contra BoHV-1. Todavia, a forma como o BA interfere na multiplicação do SuHV-1 ainda precisa ser elucidada

Monte Toro : revista mariana mensual: Epoca II Año X Número 10 - 1921 Mayo

OBJECTIVES: To assess the accuracy of coronal and sagittal CT sections to detect cavities simulating root resorption. MATERIAL AND METHODS: 60 mandibular incisors were embedded in plaster bases, and cavities with 0.6, 1.2 or 1.8 mm in diameter and 0.3, 0.6 or 0.9 mm in depth (small, medium and large cavities) were drilled on the buccal surfaces with high-speed round burs with diameters of 0.6, 1.2 and 1.8 mm to simulate external inflammatory root resorption. Simulations in the cervical, middle and apical thirds of each tooth root were made randomly. The Dental Scan software was used to obtain 1-mm-thick axial images from direct scanning, which were reconstructed in the coronal and sagittal planes using 3D software (Syngo FastView). Each series was loaded into the software. Fourteen images of each tooth were reconstructed in the coronal plane and 14 in the sagittal plane. A total of 1,652 images were obtained for analysis. Series information, tooth number and the plane reconstructed were stored. The images generated were saved on a CD-ROM together with the visualization software (Syngo FastView). Images were analyzed by a previously calibrated blinded, radiologist. Cochran's Q test was conducted separately for each region analyzed followed by pair-wise comparison by the McNemar test (p=0.05). RESULTS: No statistically significant difference (p&gt;0.05) was observed in the diagnosis of simulated resorption between the apical, middle, and coronal thirds. When the axial plane was assessed separately, diagnoses were statistically different (p<0.05) among the three root thirds. The apical third differed significantly (p<0.05) from the cervical and middle thirds. Diagnostic errors were more often observed in the apical third compared to the cervical and middle thirds. Mid-sized cavities revealed no statistically significant differences (p&gt;0.05) between planes, irrespective of the third in which the resorptions were located. CONCLUSION: When tomographic sections are requested for the diagnosis of buccal or lingual external root resorption, sagittal sections afford the best image characterization of the resorption process