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Registros recuperados: 15
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Avian blood parasites in the National Natural Park Chingaza: high Andes of Colombia Hornero
Rodríguez,Oscar A.; Moya,Helena; Matta,Nubia E..
Birds from the high Andes in the National Natural Park Chingaza, Colombia, were surveyed for blood parasites in April 2002 and March 2003. Of 136 birds examined, representing 40 species of 14 families, 38 were infected with blood parasites. Parasites of the genera Leucocytozoon (21.3% prevalence), Plasmodium (8.1%), Hepatozoon (2.9%), Microfilariae (2.9%) and Haemoproteus (1.5%) were recorded. Twenty five avian species in this survey were examined for blood parasites for the first time and 49 new parasite-host associations were identified. The most striking observation of this study was the high prevalence of Leucocytozoon spp. In the Neotropics, the prevalence of Leucocytozoon spp. has not been reported to be greater than 0.2% and is closely associated...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Avian haematozoa; Colombia; Haemoproteus; Hepatozoon; High Andes; Leucocytozoon; Microfilariae; Plasmodium.
Ano: 2009 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0073-34072009000100001
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BIOLOGIA DE ANOFELINOS AMAZÔNICOS. XXL OCORRRÊNCIA DE ESPÉCIES DE ANOPHELES E OUTROS CULICÍDEOS NA ÁREA DE INFLUÊNCIA DA HIDRELÉTRICA DE BALBINA - CINCO ANOS APÓS O ENCHIMENTO DO RESERVATÓRIO Acta Amazonica
OSORIO QUINTERO,Lisardo; DUTARY THATCHER,Bedsy; TADEI,Wanderli Pedro.
Um inquérito entomològico foi realizado na área de influência da Hidrelétrica de Balbina, situada a 146 km de Manaus, Amazonas, para avaliar os possíveis efeitos sobre as populações de Anophelese de outros culicídeos. Cinco anos após a formação do lago, An. darlingi, An. nuneztovarie An. triannulatusforam as espécies encontradas com maior freqüência nas coletas realizadas em 1. Rodovia BR-174, 2. Acceso á Usina Hidrelétrica de Balbina e 3. Área Uatumã-Morena. Para cada espécie os índices mosquito/homem/hora foram respectivamente: Area 1 - 0,57; 12,85; 0,43. Área 2 - 0; 3,75; 0,18 e Área 3 - 0; 26,38; 0,34. Representantes das duas primeiras espécies se mostraram positivas para Plasmodiumcom testes imunoenzimáticos. A prevalência de mosquitos positivos foi...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Malária; Anofelinos; Plasmodium; Hidrelétricas.
Ano: 1996 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671996000400281
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Criação de uma micoteca de fungos endofíticos de frutas regionais e seu potencial antimalárico. Repositório Alice
SOUZA, K. R. de; ALVES, B. G.; GONÇALVES, K. D.; RAPOSO, D. de S.; SOUSA, T. F.; DANTAS, P. H. S.; FELIX, C. G. S.; KRAMER, Y. V.; SILVA, G. F. da; KOOLEN, H. H. F..
Objetivou-se por meio deste estudo, a criação de uma micoteca de fungos endofíticos associados a frutas regionais e sua avaliação antimalárica.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Fungos endofíticos; Frutas amazônicas; 7º CDMicro; Malaria; Plasmodium.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1095771
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Entomological characterization and natural infection of anophelines in an area of the Atlantic Forest with autochthonous malaria cases in mountainous region of Espírito Santo State, Brazil Neotropical Entomology
Rezende,Helder R; Soares,Renata M; Cerutti Jr,Crispim; Alves,Isabel C; Natal,Delsio; Urbinatti,Paulo R; Yamasaki,Tasciane; Falqueto,Aloísio; Malafronte,Rosely dos S.
Autochthonous malaria cases in the state of Espírito Santo, Brazil, are distributed in mountainous regions surrounded by the Atlantic Forest. While some aspects of this disease are unclear, detection of possible vector species can help to elucidate epidemiological uncertainties. Entomological and natural infection studies were carried out using anophelines (Diptera: Culicidae) captured in the municipality of Santa Tereza, ES. Monthly captures were made from March 2004 to February 2006. CDC-CO2 traps were used from dusk (6:00 P.M.) to dawn (6:00 A.M.) to capture anophelines in the following habitats: near the houses, in open areas (at ground level) and inside, and at the margins of the forest (canopy and ground level). Shannon light traps were also used at...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anopheles cruzii; Autochthonous malaria; Plasmodium; PCR; Ecology.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2009000200017
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Geotecnologia aplicada na correlação da precipitação pluvial com a malária no Estado do Pará. Repositório Alice
GASPARETO, D.; MARTORANO, L. G.; DIAS, F. A.; BATALHA, S.; BICHARA, C. N. C..
2012
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Geoprocessamento; Plasmodium.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/953161
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Malaria vaccine: roadblocks and possible solutions BJMBR
Soares,I.S.; Rodrigues,M.M..
Malaria remains the most prevalent and devastating parasitic disease worldwide. Vaccination is considered to be an approach that will complement other strategies for prevention and control of the disease in the future. In the last 10 years, intense studies aimed at the development of a malaria vaccine have provided important knowledge of the nature of the host immunological mechanisms of protection and their respective target antigens. It became well established that protective immune responses can be generated against the distinct stages of Plasmodium. However, in general, protective immune responses are directed at stage-specific antigens. The elucidation of the primary structure of these antigens made possible the generation of synthetic and recombinant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Malaria; Plasmodium; Vaccine; Immunity; Infectious disease.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000300002
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Melatonin and N-acetyl-serotonin cross the red blood cell membrane and evoke calcium mobilization in malarial parasites BJMBR
Hotta,C.T.; Markus,R.P.; Garcia,C.R.S..
The duration of the intraerythrocytic cycle of Plasmodium is a key factor in the pathogenicity of this parasite. The simultaneous attack of the host red blood cells by the parasites depends on the synchronicity of their development. Unraveling the signals at the basis of this synchronicity represents a challenging biological question and may be very important to develop alternative strategies for therapeutic approaches. Recently, we reported that the synchrony of Plasmodium is modulated by melatonin, a host hormone that is synthesized only during the dark phases. Here we report that N-acetyl-serotonin, a melatonin precursor, also releases Ca2+ from isolated P. chabaudi parasites at micro- and nanomolar concentrations and that the release is blocked by 250...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Malaria; Plasmodium; Calcium; Melatonin; Circadian rhythm; Host-parasite interaction.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003001100016
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Natural Plasmodium infection in monkeys in the state of Rondônia (Brazilian Western Amazon). Repositório Alice
ARAÚJO, M. S.; MESSIAS, M. R.; FIGUEIRO, M. R.; GIL, L. H. S.; PROBST, C. M.; VIDAL, N. M.; KATSURAGAWA, T. H.; KRIEGER, M. A.; SILVA, L. H. P. da; OZAKI, L. S..
Background: Simian malaria is still an open question concerning the species of Plasmodium parasites and species of New World monkeys susceptible to the parasites. In addition, the lingering question as to whether these animals are reservoirs for human malaria might become important especially in a scenario of eradication of the disease. To aid in the answers to these questions, monkeys were surveyed for malaria parasite natural infection in the Amazonian state of Rondônia, Brazil, a state with intense environmental alterations due to human activities, which facilitated sampling of the animals. Methods: Parasites were detected and identified in DNA from blood of monkeys, by PCR with primers for the 18S rRNA, CSP and MSP1 genes and sequencing of the...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Malária simiática; Macacos; Plasmodium; Floresta amazônica.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1074729
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Parasite loads and altitudinal distribution of Liolaemus lizards in the central Chilean Andes RChHN
CAROTHERS,JOHN H.; JAKSIC,FABIÁN M..
This study compared the distributions of ten species of Liolaemus lizards in the central Chilean Andes to the distributions of four types of parasites: malaria-causing Plasmodium, gut nematodes, ticks, and mites. We wanted to see if parasite numbers might be a factor in determining distributional limits of the lizards. We found that there was no evidence of malarial infestation of the lizards, that ticks were almost absent, that more often than not mite numbers decreased at the distributional limits of the lizards, and that gut nematodes confined to the herbivorous lizards in our sample may well be beneficial rather than detrimental. Rather than parasitism, other biotic interactions (e.g., predation or competition) are more likely candidates as factors...
Tipo: Journal article Palavras-chave: Malaria; Plasmodium; Gut nematodes; Ticks; Mites; Chile; Altitudinal gradient.
Ano: 2001 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000300013
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Plants used to treat malaria in the regions of Rio Branco - Acre state and southern Amazonas state - Brazil. Infoteca-e
FERREIRA, A. B.; MING, L. C.; HAVERROTH, M.; DALY, D. C.; CABALLERO, J.; BALLESTÉ, A. M..
Malaria is a parasitic disease caused by organisms of the genus Plasmodium. The present study examined wild and cultivated plants used to treat malaria and associated symptoms by riparian communities in the Municipalities of Pauini and Xapuri in Amazonas and Acre states, respectively. During the year 2013 86 persons were interviewed in 9 rural communities in Pauini and Xapuri that were known for their knowledge and use of medicinal plants, After each interview, walks were made (walk in the woods), with the main informant of the family, for identification of plants and to collect the samples of the species indicated. A total of 86 plant species were indicated by seringueiros and ribeirinhos for the treatment of malaria and for associated symptoms, while 26...
Tipo: Artigo de divulgação na mídia (INFOTECA-E) Palavras-chave: Conhecimento tradicional; Comunidade ribeirinha; Doença tropical; Tropical disease; Enfermedad tropical; Malária; Xapuri (AC); Acre; Pauini (AM); Amazonas; Etnobotânica; Planta medicinal; Tratamento; Parasito; Protozoário; Indigenous knowledge; Traditional medicine; Medicinal plants; Plasmodium; Etnobotánica; Conocimiento tradicional; Medicina tradicional; Plantas medicinales.
Ano: 2015 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/1028209
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Rapid Detection of Plastmodium by a New ‘Thick Smear’ Method using Transmission Fluorescence Microscopy : Direct Staining with Acridine Orange OAK
Kawamoto, Fumihiko.
A new staining technique of 'thick smears' was developed tor diagnosis of malaria using transmission fluorescence microscopy. Plasmodium falciparum cultured in vitro was used as a model. The infected blood was mixed 1 : 1 -1 :2 with acridine orange (AO) solution (final concentrations of 50-lOOu.g/ml in 0.01 M Tris-HCI buffer or in PBS, pH 7.0-7.5). Immediately or several minutes later, haemolyzed or non-haemolyzed 'thick smears' were observed directly by fluorescence microscopy using an interference filter specially designed for excitation of AO or commercially available, three (interference-, glass- and triacetyl cellulose film-) types of B-excitation filters with halogen- or daylight-illuminated microscopes. All of these filters were capable of detecting...
Palavras-chave: Acridine orange; Fluorochrome staining; Interference filter; Plasmodium; Thick smear.
Ano: 1991 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/156
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Role of MyD88-adaptor-like gene polymorphism rs8177374 in modulation of malaria severity in the Pakistani population BJID
Rani,Asima; Nawaz,Syed Kashif; Irfan,Shazia; Arshad,Muhammad; Bashir,Razia; Shaheen,Najma.
Abstract Introduction: The present study was designed to investigate the association between rs8177374 polymorphism and malaria symptoms due to exposure of Plasmodium vivax and Plasmodium falciparum. Materials and methods: A total of 454 samples were included in the study (228 malaria patients and 226 healthy individuals). Malaria patients, divided into P. vivax and P. falciparum groups on the basis of the causative species of Plasmodium, were categorized into mild and severe on the basis of clinical outcomes according to WHO criteria. Healthy individuals were used as controls. Allele specific PCR based strategy was used for the identification of rs8177374 SNP. Results: MyD88-adaptor-like gene polymorphism was associated with susceptibility to malaria...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Malaria; Plasmodium; Rs8177374; MAL; Pakistani population.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400418
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Signal transduction in Plasmodium-Red Blood Cells interactions and in cytoadherence Anais da ABC (AABC)
Cruz,Laura N.; Wu,Yang; Craig,Alister G.; Garcia,Célia R.S..
Malaria is responsible for more than 1.5 million deaths each year, especially among children (Snow et al. 2005). Despite of the severity of malaria situation and great effort to the development of new drug targets (Yuan et al. 2011) there is still a relative low investment toward antimalarial drugs. Briefly there are targets classes of antimalarial drugs currently being tested including: kinases, proteases, ion channel of GPCR, nuclear receptor, among others (Gamo et al. 2010). Here we review malaria signal transduction pathways in Red Blood Cells (RBC) as well as infected RBCs and endothelial cells interactions, namely cytoadherence. The last process is thought to play an important role in the pathogenesis of severe malaria. The molecules displayed on the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cytoadherence; Erythrocyte; Malaria; Plasmodium; Signal transduction.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000200024
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Situação nutricional e alimentar de portadores de Malária residentes no Amazonas - Brasil Acta Amazonica
ALENCAR,Fernando Hélio; YUYAMA,Lucia Kiyoko Ozaki; GUTIERREZ,Miriam Elenit Lima.
Foram estudados 268 indivíduos (198 homens e 70 mulheres), residentes no Amazonas, com resultados hemoscópicos positivos de malária, diagnosticados pela Fundação Nacional de Saúde — FNS/Manaus. A avaliação antropométrica foi universal, envolvendo as medidas de Peso, Altura, índice de Massa Corpórea (IMC), Prega Cutânea Triciptal (PCT), Circunferência Braquial (CB) e Circunferência Muscular do Braço (CMB). O universo estudado foi ainda subamostrado para avaliação Hematológica, Bioquímica (121 indivíduos) e Parasitológica (55 indivíduos). A análise dos resultados evidencia que apesar da presença da malária e das precárias condições de vida dos doentes, constatou-se que o Peso, Altura, IMC, CB e CMB apresentaram valores médios considerados normais,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Estado nutricional; Malária; Plasmodium.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672001000200227
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Transgenic mosquitoes for malaria control: progresses and challenges Neotropical Entomology
Moreira,Luciano A.; Jacobs-Lorena,Marcelo.
Malaria kills millions of people every year and the current strategies to control the disease, such as insecticides and drugs have not been completely efficient. Because of that, novel means to fight against malaria are of utmost importance. Advances in the study of the mosquito vector and its interactions with the malaria parasite made scientists think that it is possible to genetically manipulate the mosquitoes to make them inefficient vectors. Here we review the advances on the introduction of foreign genes into the mosquito germ line, the characterization of tissue-specific promoters, the identification of gene products that block development of the parasite in the mosquito, and we discuss the recent generation of transgenic mosquitoes impaired for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Malaria; Transgenesis; Transmission blocking; Plasmodium.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000400001
Registros recuperados: 15
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