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Search Results: 1 - 10 of 172370 matches for " Luciano Amedée;Penna "
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Prevalência baixa de adenovírus em crian?as com diarreia em Belo Horizonte-MG
Duarte, Ricardo Jenner;Mendes, Edilberto Nogueira;Penna, Francisco José;Péret Filho, Luciano Amedée;Magalh?es, Paula Prazeres;
Jornal Brasileiro de Patologia e Medicina Laboratorial , 2012, DOI: 10.1590/S1676-24442012000400005
Abstract: introduction: several microorganisms, among them enteric adenovirus, are widely recognized as etiological agents of acute diarrhea. the association between adenovirus and the disease varies among geographical regions and is poorly known in brazil. objectives: to investigate the presence of adenovirus in stool samples from children with and without diarrhea in belo horizonte-mg. to study factors associated with enteric adenovirus infection. material and method: a qualitative immunochromatographic assay (kit vikia? rota-adeno, biomérieux) was performed to detect adenovirus antigens in stool samples from 268 children with acute diarrhea and 124 without diarrhea at hospital infantil jo?o paulo ii from january/2005 to december/2006. clinical, laboratory, and epidemiologic data were recorded in spss database (spss statistical package, ibm). results: adenovirus was detected in 16 samples (4.1%): 12 of them (4.5%) were from children with acute diarrhea and 4 of them (3.2%) from children without diarrhea. the viral infection was more prevalent among girls and the age distribution was homogenous. among the 16 children infected by adenovirus,11 (68.8%) were younger than 12 months old. however, no significant statistical difference was observed within the analyzed parameters. there was no seasonal distribution of adenovirus infection. conclusion: our data demonstrate that the prevalence of enteric adenovirus infection is low among children with diarrhea in belo horizonte-mg.
Shigella in Brazilian children with acute diarrhoea: prevalence, antimicrobial resistance and virulence genes
Sousa, Mireille ?ngela Bernardes;Mendes, Edilberto Nogueira;Collares, Guilherme Birchal;Péret-Filho, Luciano Amedée;Penna, Francisco José;Magalh?es, Paula Prazeres;
Memórias do Instituto Oswaldo Cruz , 2013, DOI: 10.1590/S0074-02762013000100005
Abstract: diarrhoeal disease is still considered a major cause of morbidity and mortality among children. among diarrhoeagenic agents, shigella should be highlighted due to its prevalence and the severity of the associated disease. here, we assessed shigella prevalence, drug susceptibility and virulence factors. faeces from 157 children with diarrhoea who sought treatment at the children's hospital jo?o paulo ii, a reference children′s hospital in belo horizonte, state of minas gerais, brazil, were cultured and drug susceptibility of the shigella isolates was determined by the disk diffusion technique. shigella virulence markers were identified by polymerase chain reaction. the bacterium was recovered from 10.8% of the children (88.2% shigella sonnei). the ipah, iuc, sen and ial genes were detected in strains isolated from all shigellosis patients; set1a was only detected in shigella flexneri. additionally, patients were infected by shigella strains of different ial, sat, sen and set1a genotypes. compared to previous studies, we observed a marked shift in the distribution of species from s. flexneri to s. sonnei and high rates of trimethoprim/sulfamethoxazole resistance.
Actividad de fosfatasa ácida en tejidos de camundongos inmunes de gérmenes y convencionales
Penna e Souza,Daniel;
Acta Odontológica Venezolana , 2002,
Abstract: the relationship that exists between the microbial flora and the activity of the fosfatasa (fac) in the animal tissues it is not very well-known and their action on the oral tissues of immune animals of germs (gf) it is little studied. the objective of this work is to verify the influence of the indigenous flora on the fac activity in the maseter, tongue, kidney and liver of animal gf and conventional (cv). camundongos was selected with 45 days of age, males and females: 10 gf and 10 cv. for the study the maseter was removed, the tongue, the kidney and the liver and later on colored histochemicaly for the activity of fac. analysis of the results showed the strongly positive enzymatic reaction in the animal cv, in reference to the animal tisues gf were presented frankly positive. this study suggests that the indigenous microbiotic flora is important for the reaction of fac observed in the tissues of the studied animals.
Actividad de fosfatasa ácida en tejidos de camundongos inmunes de gérmenes y convencionales
Daniel Penna e Souza
Acta Odontológica Venezolana , 2002,
Abstract: La relación que existe entre la flora microbiana y la actividad de la fosfatasa ácida (FAc) en los tejidos animales es poco conocida y su acción sobre los tejidos orales de animales inmunes de gérmenes (GF) es poco estudiado. El objetivo de este trabajo es verificar la influencia de la flora indígena sobre la actividad de FAc en el masetero, lengua, ri ón y hígado de animales GF y convencionales (CV). Fueron seleccionados camundongos con 45 días de edad, machos y hembras: 10 GF y 10 CV. Para el estudio fueron removidos el masetero, la lengua, el ri ón y el hígado y posteriormente te idos histoquimicamente para la actividad de FAc. Análisis de los resultados mostraron la reacción enzimática fuertemente positiva en los animales CV, en cuanto que los tejidos de los animales GF se presentó francamente positiva. Este estudio sugiere que la microbiota indígena es importante para la reacción de FAc observada en los tejidos de los animales estudiados. The relationship that exists between the microbial flora and the activity of the fosfatasa (FAc) in the animal tissues it is not very well-known and their action on the oral tissues of immune animals of germs (GF) it is little studied. The objective of this work is to verify the influence of the indigenous flora on the FAc activity in the maseter, tongue, kidney and liver of animal GF and conventional (CV). camundongos was selected with 45 days of age, males and females: 10 GF and 10 CV. For the study the maseter was removed, the tongue, the kidney and the liver and later on colored histochemicaly for the activity of FAc. Analysis of the results showed the strongly positive enzymatic reaction in the animal CV, in reference to the animal tisues GF were presented frankly positive. This study suggests that the indigenous microbiotic flora is important for the reaction of FAc observed in the tissues of the studied animals.
Das possibilidades do conhecimento histórico quando aproximado do ceticismo radical
Fernando Amed
História da Historiografia , 2010,
Abstract: Pretendemos examinar algumas controvérsias a partir da aceita o do relativismo pelos teóricos da história. Nessa dire o, oferecemos alguns comentários acerca dos trabalhos de Alun Munslow e Peter Jenkins pretendendo demonstrar dificuldades no uso do relativismo por alguns historiadores afinados com o posmodernismo a partir da aceita o de que todo contato com o passado se faz por meio de media es, elas próprias, objeto de dúvidas e críticas. Operamostambém com o conceito de ceticismo e pretendemos configurar a impossibilidade de cren a em palavras como verdade, ideologia, dominantes e dominados. Nesse sentido, apontamos para a necessidade de percep o que o ceticismo n o oferece suporte para todo tipo de cren a e que devemos levar em considera o a própria perspectiva de impossibilidade de se deparar e recuperar os eventos do passado histórico.
EDUCA O NO CAMPO E EXTENS O UNIVERSITáRIA: UM RELATO SOBRE PROJETOS DE INICIA O CIENTíFICA
Luciano Melo e Sousa
Olhar de Professor , 2012, DOI: 10.5212/olharprofr.v.15i1.0005
Abstract: This article reports the elaboration and implementation of three scientific initiation projects (PIBIC-Jr) carried out by high school students of a school for farmer families (EFA in the Portuguese acronym) in the municipality of Pedro II (PI), in partnership with the State University of Piauí. Citizenship development, knowledge building and the systematization of learning were some of the experiences lived by the students during the research initiative. For the university, theses experiences meant the opportunity to integrate research and outreach projects and a demonstration of its role in the democratization of our society. For the school, the experiences represented the opportunity to work in partnership and reading about its role in education. During one year, nineteen students and a professor, with the support of the school, developed three researches that reflected on the everyday dimensions of life in rural areas and the challenges for their development. Resumo: O presente artigo relata o processo de constru o e realiza o de três projetos de inicia o científica (PIBIC-Jr) protagonizados por alunos de ensino médio de uma EFA, no município de Pedro II (PI), em parceria com a Universidade Estadual do Piauí. Forma o cidad , constru o de saberes e sistematiza o de aprendizados foram experiências vividas pelos estudantes, provocadas pela iniciativa das pesquisas. Para a universidade, essas experiências representaram uma oportunidade de integra o entre pesquisa e extens o e demonstra o de seu papel na democratiza o de nossa sociedade. Para a escola, um exercício de parceria e leitura de sua fun o de educar. Durante um ano, dezenove estudantes e um professor universitário, com o apoio da escola, desenvolveram três pesquisas que refletiram sobre dimens es do cotidiano do campo e os desafios para seu desenvolvimento.
Use of nucleotides in weanling rats with diarrhea induced by a lactose overload: effect on the evolution of diarrhea and weight and on the histopathology of intestine, liver and spleen
Norton, R.;Leite, J.;Vieira, E.;Bambirra, E.;Moura, C.;Penna, G.;Penna, F.;
Brazilian Journal of Medical and Biological Research , 2001, DOI: 10.1590/S0100-879X2001000200006
Abstract: until recently, dietary sources of nucleotides were thought not to be essential for good nutrition. certain states with higher metabolic demands may require larger amounts that cannot be provided by endogenous production. the objective of the present study was to determine the action of nucleotides on the recovery from lactose-induced diarrhea in weaned rats. thirty-six weanling fisher rats were divided into two groups. group 1 received a standard diet and group 2 received a diet containing lactose in place of starch. on the 10th day, six animals per group were sacrificed for histopathological evaluation. the remaining animals were divided into two other subgroups, each with 6 animals, receiving a control diet, a control diet with nucleotides (0.05% adenosine monophosphate, 0.05% guanosine monophosphate, 0.05% cytidine monophosphate, 0.05% uridine monophosphate and 0.05% inosine monophosphate), a diet with lactose, and a diet with lactose and nucleotides. on the 32nd day of the experiment all animals were sacrificed. animals with diarrhea weighed less than animals without diarrhea. the introduction of nucleotides did not lead to weight gain. mean diet consumption was lower in the group that continued to ingest lactose, with the group receiving lactose plus nucleotides showing a lower mean consumption. animals receiving lactose had inflammatory reaction and deposits of periodic acid-schiff-positive material in intestinal, hepatic and splenic tissues. the introduction of nucleotides led to an improvement of the intestinal inflammatory reaction. in lactose-induced diarrhea, when the stimulus is maintained - lactose overload - the nucleotides have a limited action on the weight gain and on recovery of intestinal morphology, although they have a protective effect on hepatic injury and improve the inflammatory response.
Characterization of Trypanosoma cruzi Strains Isolated from Chronic Chagasic Patients, Triatomines and Opossums Naturally Infected from the State of Rio Grande do Sul, Brazil
Fernandes Cloé Duarte,Murta Silvane Maria Fonseca,Cerávolo Isabela Penna,Krug Luciano Percival
Memórias do Instituto Oswaldo Cruz , 1997,
Abstract: Thirty-five Trypanosoma cruzi strains were isolated from chronic chagasic patients, triatomines and opossums from different municipalities of the State of Rio Grande do Sul. Parasites were characterized by means of mice infectivity, enzyme electrophoresis and randomly amplified polymorphic DNA (RAPD) analysis. Twenty-nine strains were isolated from chagasic patients, 4 from triatomines (2 from Triatoma infestans and 2 from Panstrongylus megistus) and 2 from opossums Didelphis albiventris. Thirty-three T. cruzi strains were of low and 2 strains of high virulence in mice. Both virulent strains were isolated from P. megistus. Isoenzyme analysis of the strains showed 3 different zymodemes. Eleven strains isolated from chagasic patients and 2 from D. albiventris were Z2. Eighteen strains from patients and 2 from T. infestans were ZB and 2 T. cruzi strains isolated from P. megistus were Z1. RAPD profiles obtained with 4 random primers showed a high genetic heterogeneity of the T. cruzi strains. Zymodeme 2 and ZB strains were the more polymorphic. A band sharing analysis of the RAPD profiles of Z2 and ZB strains using 3 primers, showed a very low percentage of shared bands, 20% among 13 ZB strains and 14% among 13 Z2 strains. According to the isoenzyme results, 3 T. cruzi populations were present in State of Rio Grande do Sul. Zymodeme 2 and ZB strains were found infecting man (domiciliar transmission cycle) whereas Z1 strains were found infecting the sylvatic vector P. megistus
Implication of Chinese FDI in the Enjoyment of Right to Economic Development in C?te d’Ivoire  [PDF]
Cisse Amed Daouda, Zakaria Dit Zan Sangare, Kone Dounamba
Beijing Law Review (BLR) , 2019, DOI: 10.4236/blr.2019.103022
Abstract: Foreign investment is of great importance in the development of a country. Their participation in the economic, social, cultural and political development of a nation is undeniable. It is with this in mind that developing countries have opened their economies to foreign investment. C?te d’Ivoire, a country located in West Africa and a pillar of this zone, did not remain on the sidelines of this action. Initially, France was the economic partner of C?te d’Ivoire, then the United States and Morocco. Since a certain period, the country maintains economic relations with a new partner which is China. Chinese investments in C?te d’Ivoire are becoming more numerous, because the state offers adequate protection measures and a very favorable investment climate. Given the development objectives of the host countries, the foreign investments made in them should be in line with the realization of the right to development. A right by definition implies the right to economic, social, political and cultural development. These are provisions that are increasingly included in BIT. The purpose of this paper is to present the legal framework of the right to economic development in C?te d’Ivoire, then to determine the implication of Chinese investments in the realization of the right to economic development in C?te d’Ivoire. We used a mixed research method that is quantitative and qualitative, because we used the existing literature on the theme we approached, information collected at the embassy of China in C?te d’Ivoire, and also testimonials from some workers. We have arrived at the result to which, the legal framework of the right to economic development in C?te d’Ivoire is to improve on the one hand and the other hand, the Chinese investments in C?te d’Ivoire, even if they suffer from certain irregularities, contribute to the realization of the right to economic development of the country.
Biologia reprodutiva de Psychotria suterella Muell. Arg. (Rubiaceae) e a abordagem de escalas ecológicas para a fenologia de flora??o e frutifica??o
Lopes, Luciano E.;Buzato, Silvana;
Brazilian Journal of Botany , 2005, DOI: 10.1590/S0100-84042005000400013
Abstract: foraging behavior of pollinators and seed dispersers is related to resource heterogeneity in the environment, making it important to know the spatio-temporal variation of resources in order to understand the mutualistic relationships established between plants and animals. psychotria suterella flowered from january to april, months with highest annual rainfall, and exhibited high synchronism among the populations in the landscape studied. the flowering pattern found on the category of individuals corresponds to that one found in populations and landscape categories. fructification occurred all year long, with greater availability of mature fruits in may and december; and synchronism was lower in this phenophase than in flowering. only intermorph pollinations produced fruits and seeds, indicating that this plant species relies on pollen vectors for sexual reproduction. since there is no evidence of pollen limitation, we consider that differences in fructification among populations could be related to abiotic factors. the overlap between flowering pattern of psychotria suterella and bombus brasiliensis foraging activicty, the fact that b. brasiliensis is the most important pollinator of this plant species, as well as the importance of p. suterella for this bee diet, suggest that selective pressures could be acting between these species, underlying this mutualistic interaction.
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