Parasitism of Ixodes (Multidentatus) auritulus Neumann (Acari: Ixodidae) on birds from the city of Curitiba, State of Paraná, Southern Brazil.

abstract：:Bacillus sphaericus produces at least two toxins which are highly toxic to mosquito larvae. The binary toxin, which is comprised of proteins of 51.4 and 41.9 kDa, is present in all highly insecticidal strains. The 100 kDa SSII-1 toxin is present in most highly insecticidal as well as the weakly insecticidal strains. T...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Davidson EW

更新日期：1995-01-01 00:00:00

abstract：:This review presents up-to-date information on the distribution and control measures of babesiosis in Latin America. Bovine babesiosis caused by Babesia bovis and B. bigemia will be emphasized. The disease is endemic in most countries and poses a serious economic burden on livestock production in the region (U.S. $136...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Montenegro-James S

更新日期：1992-01-01 00:00:00

abstract：:Helmintex is a sensitive method used for detecting Schistosoma mansoni eggs. Here, we describe the observed frequency of six proposed criteria associated with the identification of S. mansoni eggs prepared with the Helmintex method and stained with ninhydrin. The efficacy of these criteria in classifying S. mansoni eg...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： de Souza RP,Favero V,Pascoal VF,Lindholz C,Bittencourt HR,Graeff-Teixeira C

更新日期：2019-01-01 00:00:00

abstract：:Peritoneal exudate cells from mice infected with Schistosoma mansoni (S-PEC) can kill schistosomula in vitro in the presence of immune serum. S-PEC produce a low level of respiratory burst, and schistosomula mortality in their presence is not reduced when exogenous antioxidants are added, suggesting that with S-PEC, o...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Smith JM,Mikoji GM,Prichard RK

更新日期：1987-01-01 00:00:00

abstract：:Acute Chagas disease (ACD) has a distinct epidemiological profile in the Amazon Region, with cases and outbreaks of Trypanosoma cruzi infection being possibly related to the ingestion of contaminated food. Data on ACD in the state of Pará retrieved from 2000 to 2016 from the Brazilian Notifiable Diseases Information S...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Santos VRCD,Meis J,Savino W,Andrade JAA,Vieira JRDS,Coura JR,Junqueira ACV

更新日期：2018-01-01 00:00:00

abstract：:Didymocystis wedli a parasite from the gills of Thunnus albacares from the coast of the State of Rio de Janeiro, is described by use of light and scanning electron microscopy. This is the first report of this species in Brazil and South America. New data are presented on the surface topography as demonstrated by scann...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Kohn A,Santos A,Baptista-Farias MF

更新日期：2001-10-01 00:00:00

abstract：:A comparative study was undertaken on the immunogenic properties of 63kDa glycoproteins obtained from five different strains/species of Leishmania and assessed in C57BL/10 mice. The humoral immune response was assessed by ELISA against the five different antigens of the immunized animals. The cellular immune response ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Dabés Guimarães TM,de Toledo VD,da Costa CA,da Costa RT,Genaro O,Williams P,Mayrink W

更新日期：1996-01-01 00:00:00

abstract：:Leptoconops nosopheris sp. n. (Diptera: Ceratopogonidae) is described from a blood-filled female biting midge in Early Cretaceous Burmese amber. The new species is characterized by a very elongate terminal flagellomere, elongate cerci, and an indistinct spur on the metatibia. This biting midge contained digenetic tryp...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Poinar G Jr

更新日期：2008-08-01 00:00:00

abstract：:The kidney trematode Paratanaisia bragai is reported for the first time parasitizing the ring-necked pheasant (Phasianus colchicus L., 1758) and the pathological alterations associated to the parasitism are referred on the basis of 50 specimens of this bird from backyard flocks in 11 counties of the state of Rio de Ja...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Gomes DC,Menezes RC,Tortelly R,Pinto RM

更新日期：2005-05-01 00:00:00

abstract：:We used a slide culture technique to detect tubercle bacilli surviving in sputum smears (n=46) after conventional heat fixation and Ziehl-Neelsen staining. In all heat-fixed sputum smears, tubercle bacilli survived after time 0 (n=22), 24 h (n=7), 48 h (n=7), 72 h (n=4), and seven days (n=6). None of the stained sputu...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Cardoso CL,Giacomelli LR,Helbel C,Sant'Ana JJ,Martins FM,Barreto AM

更新日期：2001-02-01 00:00:00

abstract：:The hepatitis C virus (HCV) can be detected in blood and other bodily fluids, such as saliva, semen and gastric juices. The aim of this study was to compare the HCV viral loads in the serum and saliva of infected patients. Twenty-nine patients with detectable HCV RNA in their serum and saliva were included in this stu...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Menezes GB,Pereira FA,Duarte CA,Carmo TM,Silva Filho HP,Zarife MA,Krieger MA,Reis EA,Reis MG

更新日期：2012-08-01 00:00:00

abstract：:In recent years, the development of new tools to gather field information about vector ecological parameters has increased. This report evaluated the BG-Sentinel Trap (BGS-Trap), a promising new attempt to improve collection of the dengue vector, Aedes aegypti. The efficacy of the BGS-Trap was compared with the CDC ba...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Maciel-de-Freitas R,Eiras AE,Lourenço-de-Oliveira R

更新日期：2006-05-01 00:00:00

abstract：:From November 1996 to March 2000, a total of 884 children between 0 and 15 years, from 11 institutions including day care centres, public urban and public rural schools in Uberlândia, State of Minas Gerais, central Brazil, were examined for head louse infestation. Children's sex, race, age and some hairs characteristi...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Borges R,Mendes J

更新日期：2002-03-01 00:00:00

abstract：:Necrophagous insects, mainly Diptera and Coleoptera, are attracted to specific stages of carcass decomposition, in a process of faunistic succession. They are very important in estimating the postmortem interval, the time interval between the death and the discovery of the body. In studies done with pig carcasses expo...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Carvalho LM,Thyssen PJ,Linhares AX,Palhares FA

更新日期：2000-01-01 00:00:00

abstract：BACKGROUND:Enterocytozoon bieneusi are the most common microsporidia associated with different clinical manifestations such as diarrhoea, respiratory tract inflammation and acalculous cholecystitis, especially in immunocompromised patients. Infection usually occurs by ingestion of food and water contaminated with spore...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Yamashiro S,Fiuza VRDS,Teixeira ÂTLS,Branco N,Levy CE,Castro ICVS,Franco RMB

更新日期：2017-06-01 00:00:00

abstract：:The effects of radiation on the reproductive capacity and the longevity of Panstrongylus megistus were studied. An indirect correlation between longevity and radiation doses was observed. Males were more affected than females. Longevity of females submitted to 10 Gy was not different when compared to controls. Some of...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Verçosa P,Falcão PH,Furtado AF

更新日期：1993-04-01 00:00:00

abstract：:A shift from large to small average sizes was observed in Triatoma infestans and Rhodnius domesticus between field and domestic (or laboratory) conditions of life. It was more pronounced in the female specimens, leading to a subsequent reduction of sexual size dimorphism. This feature is discussed in terms of genetic ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Dujardin J,Steinden M,Chavez T,Machane M,Schofield C

更新日期：1999-07-01 00:00:00

abstract：:In the Saimiri monkey, an experimental host for human malaria, acquired protection against Plasmodium falciparum blood stages depends on the IgG antibody populations developed. In vivo protective anti-falciparum activity of IgG antibodies is correlated with the in vitro opsonizing activity promoting phagocytosis of pa...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Gysin J

更新日期：1992-01-01 00:00:00

abstract：:The ultrastructure of endogenous stages of Eimeria ninakohlyakimovae was observed in epithelial cells of cecum and colon crypts from a goat experimentally infected with 2.0 x 10(5) oocysts/kg. The secondary meronts developed above the nucleus of the host cell. The nucleus first divides and merozoites then form on the ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Vieira LS,Lima JD,Ribeiro MF,Bozzi IA,Camargos ER

更新日期：1997-07-01 00:00:00

abstract：:In Argentina, most information on hepatitis C virus (HCV) genotype distribution comes from studies carried out in Buenos Aires (east province). In order to identify HCV subtypes in central Argentina, nucleotide sequencing of core region was performed in samples from 36 patients living in Córdoba, the second most popul...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Ré V,Contigiani M,Yoshida CF,Lampe E

更新日期：2007-12-01 00:00:00

abstract：:We have been interested in identifying genes that play a role in reproduction of the mosquito Aedes aegypti. Our interests are currently focused on the vitellogenin genes which in the mosquito are expressed only in the fat body in response to the insect steroid hormone, 20-hydroxyecdysone. Four of the five vitellogeni...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Hamblin MT,Marx JL,Wolfner MF,Hagedorn HH

更新日期：1987-01-01 00:00:00

abstract：:The biochemical pathways involved in nicotinamide adenine dinucleotide (NAD) biosynthesis converge at the enzymatic step catalysed by nicotinamide mononucleotide adenylyltransferase (NMNAT, EC: 2.7.7.1). The majority of NMNATs are assembled into homo-oligomeric states that comprise 2-6 subunits. Recently, the NMNAT of...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Contreras-Rodríguez LE,Marin-Mogollon CY,Sánchez-Mejía LM,Ramírez-Hernández MH

更新日期：2018-07-10 00:00:00

abstract：:Sequences of the cytochrome c oxidase subunit I (COI) mitochondrial gene from adults of 22 Culex (Culex) species from Argentina and Brazil were employed to assess species identification and to test the usefulness of COI for barcoding using the best close match (BCM) algorithm. A pairwise Kimura two-parameter distance ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Laurito M,Oliveira TM,Almirón WR,Sallum MA

更新日期：2013-01-01 00:00:00

abstract：:Patients with acute schistosomiasis were studied before and after oxamniquine treatment. They had been exposed to cercariae 5 to 9 weeks before, and presented compatible clinical manifestations, eosinophilia, and high levels of total IgE. Interferon-gamma (IFN-gamma) and interleukin-4 were measured by ELISA in whole b...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： de Souza JR,Morais CN,Aroucha ML,Miranda PJ,Barbosa CS,Domingues AL,Carvalho Júnior LB,Abath FG,Montenegro SM

更新日期：2007-05-01 00:00:00

abstract：:Type I diabetes mellitus (insulin-dependent DM = IDDM) is a chronic disease characterized by specific destruction of pancreatic beta cells, resulting in an absolute lack of insulin. Immune mechanisms, genetic susceptibility, and environmental factors are all implicated in the pathogenesis of Type 1 diabetes. This stud...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Fidan I,Yüksel S,Kalkanci A,Imir T,Kustimur S

更新日期：2005-12-01 00:00:00

abstract：BACKGROUND:Intermediate hosts are key organisms in maintaining parasite life cycles, because they can act as amplifiers in the transmission from natural reservoirs to humans. One of the most important groups of intermediate hosts for zoonotic nematode infections are gastropods,slugs and snails. These are essential orga...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Valente R,Robles MDR,Diaz JI

更新日期：2020-11-27 00:00:00

abstract：:Biomphalaria glabrata can react through different pathways to Schistosoma mansoni miracidium penetration, according to the degree of resistance/susceptibility presented by different snail strains, which is a genetically determined character, resistance being the dominant feature. However, it has been observed that pre...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Azevedo CM,Borges CC,Andrade ZA

更新日期：2006-09-01 00:00:00

abstract：:BACKGROUND Chagas disease, resulting from Trypanosoma cruzi infections, continues to be a health concern mainly in Latin American countries where the parasite is endemic. The laboratory diagnosis of a chronic infection is determined through serological assays for antibodies against T. cruzi and several tests are avail...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Sáez-Alquezar A,Junqueira ACV,Durans ADM,Guimarães AV,Corrêa JA,Provance DW Jr,Cabello PH,Coura JR,Viñas PA

更新日期：2020-01-01 00:00:00

abstract：:This study aims to investigate the importance of the serum factors present in the plasma of resistant Biomphalaria tenagophila snails, when transferred to susceptible conspecific. Susceptible B. tenagophila (CF) received plasma from resistant B. tenagophila (Taim), and both were later infected with Schistosoma mansoni...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Coelho JR,Bezerra FS

更新日期：2006-02-01 00:00:00

abstract：BACKGROUND:Dengue is an arthropod-borne viral disease with a majority of asymptomatic individuals and clinical manifestations varying from mild fever to severe and potentially lethal forms. An increasing number of genetic studies have outlined the association between host genetic variations and dengue severity. Genes a...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Ornelas AMM,Xavier-de-Carvalho C,Alvarado-Arnez LE,Ribeiro-Alves M,Rossi ÁD,Tanuri A,de Aguiar RS,Moraes MO,Cardoso CC

更新日期：2019-01-01 00:00:00