4 documents found, page 1 of 1
Anti-Helicobacter pylori activity and oxidative burst inhibition by the naphtho...
Kitagawa,Rodrigo Rezende; Bonacorsi,Cibele; Fonseca,Luiz Marcos da; Vilegas,Wagner; Raddi,Maria Stella GonçalvesHelicobacter pylori is a bacterium recognized as the major cause of chronic gastritis and peptic ulcers. Infection by H. pylori induces inflammatory responses and pathological changes in the gastric microenvironment. The host Keywords: immune cells (especially neutrophils) release inflammatory mediators and large 5-methoxy-3,4-dehydroxanthomegnin amounts of reactive oxygen species (ROS), which are associated wi...
Antitumor and immunomodulatory effects of the naphthoquinone 5-methoxy-3,4-dehy...
Kitagawa,Rodrigo Rezende; Vilegas,Wagner; Carlos,Iracilda Zeppone; Raddi,Maria Stella GonçalvesLarge number of quinones has been associated with antitumor, antibacterial, antimalarial and antifungal activities. In this work we describe the effect of the naphthoquinone, 5-methoxy-3,4-dehydroxanthomegnin, on murine tumor cells (LP07 and LM2) and its immunomodulatory effect on nitric oxide (NO) production on LPS-stimulated macrophages. The results have shown that 5-methoxy-3,4-dehydroxanthomegnin was a sign...
Indoor Air quality related to occupancy at an air-conditioned public building
Ponsoni,Karina; Raddi,Maria Stella GonçalvesTo characterize the influence of occupancy on the indoor air quality, a public office building with air-conditioning system was selected for this study. The indoor parameters included total bacteria count, total fungal count, temperature, relative humidity, and carbon dioxide concentration. The number of occupants, which varied throughout the day, was recorded in each sample. The samples were taken before the b...
Staphylococcus aureus: portadores entre manipuladores de alimentos
Raddi,Maria Stella Gonçalves; Leite,Clarice Queico Fujimura; Mendonça,Clara PeckmannForam colhidas amostras de mãos e fossas nasais de 48 manipuladores de alimentos das principais casas comerciais da cidade de Araraquara, Estado de São Paulo (Brasil), e de 20 estudantes universitários. Dentre os indivíduos foram encontrados 44,1% e 34,8% que portavam Staphylococcus aureus em fossas nasais e mãos, respectivamente. Observou-se predomínio de fagotipos dos grupos I e III. Dos 12 portadores do micr...