RESUMO
BACKGROUND: Propolis has been used as a natural health product mainly due to the presence of polyphenols, flavonoids, phenolic aldehydes, amino acids, vitamins and others bioactive constituents. To this natural substance are attributed different biological and pharmacological properties which are influenced by its chemical composition and organoleptic properties. The aim of this work was to evaluate the physicochemical properties and parameters of green propolis collected during a period of six years (2008-2013) in the state of Minas Gerais, located at the southeastern region of Brazil. METHODS: The methodology were in accordance with Brazilian legislation on the identity and quality standards of propolis. The evaluated parameters of hydroalcoholic from green propolis were total flavonoids, antioxidant activity - DPPH method, oxidation index, wax content, humidity and insoluble impurities. RESULTS: Propolis samples collected in different seasons during the years 2008 to 2013 presented mean values of total flavonoids (3.4 ± 0.11 mg/g), antioxidant activity DPPH (4.76 ± 0.16 µg/mL), oxidation index (3, 4 ± 0.33 seconds) and wax (15.14 ± 0.78% m/m), which are in accordance with Brazilian legislation. CONCLUSION: Green propolis did not show abrupt seasonal changes during the six years of investigation, and may be considered as an adequate functional ingredient.
Assuntos
Própole/química , Antioxidantes/química , Baccharis , Compostos de Bifenilo/química , Brasil , Flavonoides/análise , Fenóis/análise , Picratos/química , Estações do Ano , Ceras/análiseRESUMO
BACKGROUND: Visceral leishmaniasis (VL) is a zooanthroponosis affecting both rural and periurban areas, and can also spread into urban areas. VL has emerged in many countries in the world, presenting new cases in new countries of occurrence. Thus, studies concerning epidemiological aspects in different world regions are very meaningful. METHODS: With this purpose, this study analyzed 89 cases of VL, treated between June 2006 and June 2014 at Eduardo de Menezes Hospital (HEM), a Reference Center of Infectious Diseases situated in Belo Horizonte, in Minas Gerais state, Brazil. RESULTS: According to the results, it was observed that males are mostly infected (84%/n=75) and the most affected age range was 20-49 years old (83%/n=74). The treatment liposomal amphotericin B (33%/n=29) was mostly used. Recurrences were more frequent in patients treated with Glucantime® (17%/n=9). No side effects were reported among the 29 patients treated with liposomal amphotericin B. On the other hand, there were 23 cases related to the occurrence of acute renal failure (ARF) and the use of conventional amphotericin B, both when it was administered alone or in combination with other drugs. Additionally, we observed a close relationship between the VL and HIV infection, observing a coinfection rate of 28.1% (n=25). CONCLUSION: From the survey data, it was possible to conclude that the majority of VL patient treated at HEM is male, classified as brown racial group, economically active, and may be drug addicts, chronic alcoholics and/or smokers. They may present some Non-communicable diseases (NCD), such as hypertension, diabetes mellitus, dyslipidemia and/or obesity and, predominantly present a great chance of being a carrier of the Human Immunodeficiency Virus, associated or not with tuberculosis. As symptoms, these patients possibly will present hepatosplenomegaly, fever and pronounced weight loss.
Assuntos
Anfotericina B/uso terapêutico , Antiprotozoários/uso terapêutico , Leishmaniose Visceral/tratamento farmacológico , Meglumina/uso terapêutico , Compostos Organometálicos/uso terapêutico , Adolescente , Adulto , Anfotericina B/administração & dosagem , Antiprotozoários/administração & dosagem , Brasil/epidemiologia , Criança , Pré-Escolar , Coinfecção , Feminino , Infecções por HIV/epidemiologia , Humanos , Lactente , Leishmaniose Visceral/complicações , Leishmaniose Visceral/epidemiologia , Masculino , Meglumina/administração & dosagem , Antimoniato de Meglumina , Pessoa de Meia-Idade , Compostos Organometálicos/administração & dosagem , Recidiva , Estudos Retrospectivos , Distribuição por Sexo , Adulto JovemRESUMO
Sulforaphane (SFN) is a molecule within the isothiocyanate (ITC) group of organosulfur compounds. SFN is a phytochemical commonly found in cruciferous vegetables such as broccoli, brussels sprouts and cabbages. It has been widely studied in order to evaluate its chemopreventive properties and some of those have already been established by means of animal and human models. The SFN induces Phase I and II enzymes involved in detoxification processes of chemical carcinogens in order to prevent the start of carcinogenesis. It also presents anti-tumor action at post-initiation Phase, suggesting supplementary roles in cancer prevention. In a dose dependent manner, ITC inhibits the viability of human cancer cells, modifies epigenetic events that occur in cancer cells and present antiinflammatory effect acting during the initial of uncontrolled cell proliferation. This protective effect may be due to its antioxidant status, its recognized capacity to induce the expression and/or activity of of different cytoprotective proteins involved in the activating "Nuclear factor erythroid-derived 2-like 2" (Nrf2). Nevertheless, the effects on health and the possible connections among different diet constituents in humans must be carefully studied as there are limitations in the current data in order to better understand the molecular mechanisms responsible for those effects. This survey also includes relevant patents on the use of SFN, like its use in skin cancer treatment (US2015038580); and as an adjuvant in anti-cancer treatment (US2014228419). The use of SFN as an antioxidant dietary supplement, methods for compositions that promote glutathione production (WO2015002279) and methods for extracting and purifying SFN from broccoli seeds (CN104086469) are also included in this review.
Assuntos
Antineoplásicos Fitogênicos/uso terapêutico , Antioxidantes/uso terapêutico , Suplementos Nutricionais , Isotiocianatos/uso terapêutico , Neoplasias/tratamento farmacológico , Animais , Antineoplásicos Fitogênicos/efeitos adversos , Antioxidantes/efeitos adversos , Antioxidantes/química , Apoptose/efeitos dos fármacos , Suplementos Nutricionais/efeitos adversos , Desenho de Fármacos , Epigênese Genética/efeitos dos fármacos , Humanos , Isotiocianatos/efeitos adversos , Isotiocianatos/química , Estrutura Molecular , Neoplasias/genética , Neoplasias/metabolismo , Neoplasias/patologia , Patentes como Assunto , Transdução de Sinais/efeitos dos fármacos , Relação Estrutura-Atividade , SulfóxidosRESUMO
Cruciferous vegetables, such as broccoli and watercress, have been studied extensively aiming to evaluate their chemopreventive properties. Some of them have already been established using animal models. The ITCs induce Phase II enzymes related to detoxification processes of chemical carcinogens to prevent the start of carcinogenesis. They also exhibit antitumor activity at post-initiation phase, suggesting their additional role(s) in cancer prevention. Sulforaphane is the most extensively studied isothiocyanate, focused in its anti-tumoral activity and it is mainly found in great amounts in broccoli and other cruciferous. In a dose dependent manner, ITCs inhibit the cell viability of human cervical cancer cells, human pancreatic cancer cells, human hepatocellular carcinoma cells, human ovarian cancer cells, and have antiinflammatory properties in the treatment of human T-cell leukemia cells. This protective effect may be due to improved antioxidant status. Although the health effects of diet in humans are generally considered promising, there are definite challenges and limitations of the current data in better understanding of the molecular mechanisms responsible for this effect, together with the possible interactions between different dietary constituents. The survey of relevant patents on the use of isothiocyanates such as sulforaphane for cancer and cardiovascular diseases treatments is also included in this review.