Experimental American trypanomiasis in rats: sympathetic denervation, parasitism and inflammatory process.

abstract：:Angiostrongylus costaricensis lives in the cecal and mesenteric arteries of its vertebrate hosts, and causes an inflammatory disease in humans. To investigate unknown aspects of the abdominal angiostrogyliasis pathogenesis, infected Sigmodon hispidus were sequentially studied in different times of infection. The study...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Mota EM,Lenzi HL

更新日期：2005-07-01 00:00:00

abstract：:Aedes albifasciatus is an important common mosquito in Central Argentina. It is a confirmed vector of the Western Equine Encephalitis and is responsible for loss of milk production in dairy cattle during peak populations. This paper reports the flight activity pattern of Ae. albifasciatus for different seasons, in the...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Almeida FF,Gorla DE

更新日期：1995-09-01 00:00:00

abstract：:An unusually high incidence of microcephaly in newborns has recently been observed in Brazil. There is a temporal association between the increase in cases of microcephaly and the Zika virus (ZIKV) epidemic. Viral RNA has been detected in amniotic fluid samples, placental tissues and newborn and fetal brain tissues. H...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Noronha Ld,Zanluca C,Azevedo ML,Luz KG,Santos CN

更新日期：2016-05-01 00:00:00

abstract：:The phlebotomine sand flies Nyssomyia intermedia (Lutz & Neiva, 1912) and Nyssomyia neivai (Pinto, 1926) are very close and may be involved in the transmission of Leishmania spp. Ross, 1903 in Brazil. The biology of the first laboratory-reared generations of these species, descended from insects captured in Além Paraí...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Andrade Filho JD,Galati EA,Falcão AL

更新日期：2004-10-01 00:00:00

abstract：:This paper evaluates CHCl3 and CH3OH extracts of the stem bark, branches and leaves of Drimys brasiliensis and drimane sesquiterpenes isolated from the stem bark against strains of Leishmania amazonensis and Leishmania braziliensis promastigotes and Plasmodium falciparum trophozoites. All of the extracts and compounds...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Claudino VD,da Silva KC,Cechinel Filho V,Yunes RA,Delle Monache F,Giménez A,Salamanca E,Gutierrez-Yapu D,Malheiros A

更新日期：2013-04-01 00:00:00

abstract：:Two techniques for rapid diagnosis, immunofluorescence (IFAT) and enzyme immunoassay (EIA), have been compared with virus isolation in tissue culture for the detection of respiratory syncytial virus (RSV) in specimens of nasopharyngeal secretions. The specimens were obtained from children under five years of age suffe...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Siqueira MM,Ferreira V,Nascimento JP

更新日期：1986-04-01 00:00:00

abstract：:Angiostrongylus costaricensis is the causative agent of abdominal angiostrongyliasis, a zoonotic infection that may produce severe eosinophilic enterocolitis or hepatitis in humans. Parasites are usually not released in stools and serology has an important role in diagnosis. Since cross-reactivity is demonstrated betw...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Graeff-Teixeira C,Pascoal VF,Rodriguez R,Morassutti AL,Intapan PM,Maleewong W

更新日期：2020-09-21 00:00:00

abstract：:Respiratory failure (RF) is the main cause of hospital admission in HIV/AIDS patients. This study assessed comorbidities and laboratory parameters in HIV/AIDS inpatients with RF (N = 58) in relation to those without RF (N = 36). Tuberculosis showed a huge relative risk and platelet counts were slightly higher in HIV/A...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Gama WM,Oliveira LB,Chaves YO,Ribeiro F,Almeida TVR,Baptista BJA,Santana MF,Ferreira LC,Lacerda MVG,Nogueira PA

更新日期：2020-09-14 00:00:00

abstract：:Triatoma guasayana and two putative cryptic species pertaining to T. sordida complex (named groups 1 and 2) occur in sympatry in the Bolivian Chaco. Using multilocus enzyme electrophoresis and subsequent genetic analysis, our work assesses their population distribution and dispersal capacity in domestic, peridomestic,...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Noireau F,Gutierrez T,Flores R,Breniere F,Bosseno MF,Wisnivesky-Colli C

更新日期：1999-07-01 00:00:00

abstract：:Experiments with Squamatoides trivitattus were carried out in two different controlled temperatures (16 +/- 1 degree C/50-60% RH and 27 +/- 1 degree C/70-80% RH). The viability of larvae and pupae at 27 degrees C was 89.82% and 92.75% respectively. Larvae did not develop at 16 degrees C. Larval development lasted for ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Salviano RJ,de Mello RP,Beck LC,d'Almeida JM

更新日期：1996-03-01 00:00:00

abstract：:In this transversal study, factors related to infection with and transmission of Schistosoma mansoni were explored. Based on stool examinations of two Kato-Katz smears of a single sample, the prevalences of schistosomiasis and geohelminths were established. In a multivariable analysis, sets of demographic, socio-econo...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Enk MJ,Lima AC,Barros Hda S,Massara CL,Coelho PM,Schall VT

更新日期：2010-07-01 00:00:00

abstract：:The presence of tRNA array, a region with high tRNA gene number and density, has been demonstrated in Mycobacterium genus. However, a recent phylogenomic study revealed the existence of five distinct monophyletic groups (genera) within this genus. Considering this new scenario, and based on in-silico analyses, we have...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Morgado SM,Vicente ACP

更新日期：2019-01-01 00:00:00

abstract：:The black flies of the genus Inaequalium present a Neotropical distribution, with Panama at the northern limit, and the Argentinian pampas at the southern, but do not occur in the Central Amazon. This study offers a cladistic analysis establishing a hypothesis of relationships between the species of Inaequalium. A tot...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Strieder MN,Py-Daniel V

更新日期：2002-01-01 00:00:00

abstract：:This article tries to demonstrate by new pathological findings (with the use of immunohistochemical technique and confocal laser microscopy) that chronic chagasic cardiomyopathy is a result of multiple factors involving myocarditis, immunodepression, severe fibrosis and microvessels dilatation and that all of these al...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： de Lourdes Higuchi M

更新日期：1999-01-01 00:00:00

abstract：:Here, we observed the uptake of membrane-impermeant molecules by cercariae as they penetrate the skin and are transformed into schistosomula. We propose that membrane-impermeant molecules, Lucifer Yellow, Propidium iodide and Hoechst 33258 enter the parasite through both thenephridiopore and the surface membrane and t...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Thornhill J,Kusel J,Oliviera FA,Ribeiro F,Lima SF,Coelho PM,McVeigh P,Mattos AC

更新日期：2010-07-01 00:00:00

abstract：:Muscina stabulans, M. domestica, Chrysomya putoria, C. megacephala and Stomoxys calcitrans were the most abundant muscoid flies captured in a poultry facility in southeastern Brazil. We examined the gonadotrophic profiles of the females caught at different sites and different times and found that Mu. stabulans and M. ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Avancini RM,Silveira GA

更新日期：2000-03-01 00:00:00

abstract：:Cross sectional studies on malaria prevalence was performed in 2001, 2002, and 2004 in Vila Candelária, an urban riverside area of Porto Velho, Rondônia, in the Brazilian Western Amazon, followed by longitudinal surveys on malaria incidence. Vila Candelária is a working class district, provided with electricity, water...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Tada MS,Marques RP,Mesquita E,Dalla Martha RC,Rodrigues JA,Costa JD,Pepelascov RR,Katsuragawa TH,Pereira-da-Silva LH

更新日期：2007-06-01 00:00:00

abstract：:More sensitive methodologies are necessary to improve strongyloidiasis diagnosis. This study compared the sensitivities of the McMaster modified technique and polymerase chain reaction (PCR) assays, both performed in faecal samples. Lewis rats were subcutaneously infected with 4,000, 400 or 40 infective third-stage la...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Marra NM,Chiuso-Minicucci F,Machado GC,Zorzella-Pezavento SF,França TG,Ishikawa LL,Amarante AF,Sartori A,Amarante MR

更新日期：2010-02-01 00:00:00

abstract：BACKGROUND:Lutzomyia umbratilis, the vector for Leishmania guyanensis in northern South America, has been found naturally infected with L. guyanensis only in areas north of the Negro and Amazon rivers. While populations of this sand fly species are also found in areas south of these rivers, these populations have never...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Soares RP,Nogueira PM,Secundino NF,Marialva EF,Ríos-Velásquez CM,Pessoa FAC

更新日期：2018-03-01 00:00:00

abstract：:A massive and homogeneous amount of amastigote-like forms was detected in the stomodeal valve (SV) and the thoracic mid-gut (TMG) of Leishmania major-infected Phlebotomus papatasi, which received a second blood meal 13 to 21 days post-infection on healthy anaesthetized hamsters. After re-feeding, the infected sand fli...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Añez N,Tang Y,Rojas A,Crisante G,Killick-Kendrick M,Killick-Kendrick R

更新日期：2003-06-01 00:00:00

abstract：:Coagulase-negative staphylococci (CNS) have been identified as the etiological agent in various infections and are currently the microorganisms most frequently isolated in nosocomial infections. However, little is known about the virulence factors produced by CNS that contribute to the pathogenesis of infections cause...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Cunha Mde L,Rugolo LM,Lopes CA

更新日期：2006-09-01 00:00:00

abstract：:Although vaccines are the best means of protection against influenza, neuraminidase inhibitors are currently the main antiviral treatment available to control severe influenza cases. One of the most frequent substitutions in the neuraminidase (NA) protein of influenza A(H3N2) viruses during or soon after oseltamivir a...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Pontoriero A,Avaro M,Benedetti E,Russo M,Czech A,Periolo N,Campos A,Zamora A,Baumeister E

更新日期：2016-12-01 00:00:00

abstract：:Psychodid sand flies are blood-sucking fly vectors of several parasitic diseases. The oldest definitive record of this group is from the Lower Cretaceous amber of Lebanon (circa-135 to -125 My), but the high diversity within this group supports the idea that the psychodoids originated much earlier in history. The pala...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Azar D,Nel A

更新日期：2003-01-01 00:00:00

abstract：:Lutzomyia evandroi Costa Lima and Antunes, 1936 is found in Rio Grande do Norte, northeastern Brazil, in areas of visceral and mucocutaneous leishmaniasis and follows the same geographic distribution of L. longipalpis. The biological cycle, oviposition, morphological and behavioral characteristics of the species were ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： de Melo Ximenes Mde F,Maciel JC,Jerônimo SM

更新日期：2001-08-01 00:00:00

abstract：:A survey was conducted in a blood donor population of Central Brazil aiming to investigate the prevalence of GB virus C (GBV-C)/hepatitis G virus (HGV) infection and also to analyze the virus genotypes distribution. A total of 241 voluntary blood donors were interviewed at the State Blood Bank in Goiânia, State of Goi...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Oliveira LA,Martins RM,Carneiro MA,Teles SA,Silva SA,Cardoso DD,Lampe E,Yoshida CF

更新日期：2002-10-01 00:00:00

abstract：:There has been good progress in inferring the evolutionary relationships within trypanosomes from DNA data as until relatively recently, many relationships have remained rather speculative. Ongoing molecular studies have provided data that have adequately shown Trypanosoma to be monophyletic and, rather surprisingly, ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Stothard J

更新日期：2000-07-01 00:00:00

abstract：:This study's objective was to search for Cryptosporidium sp. in diarrheic feces from children aged zero to 12 years and cared for at medical units within Universidade Federal de Uberlândia or at a private practice in Uberlândia, State of Minas Gerais, Brazil, from September 1992 to August 1993. Three fecal samples pre...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Gennari-Cardoso ML,Costa-Cruz JM,de Castro E,Lima LM,Prudente DV

更新日期：1996-09-01 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：:A semiarid area of northwest Costa Rica where Lutzomyia longipalpis is common in corrals around houses is described. Monthly captures of the sandfly during two consecutive years for fixed periods of time indicated that the insect bites avidly cows, horses, pigs, dogs and humans. From a total of 14,215 specimens, 90.5%...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Zeledón R,Murillo J,Gutierrez H

更新日期：1984-10-01 00:00:00

abstract：:There is a general consensus that during chronic Trypanosoma cruzi infection, the host immune system induces complex processes to ensure the control of parasite growth while preserving the potential to mount and maintain a life-long controlled humoral and cellular immune response against the invading pathogen. This re...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Sathler-Avelar R,Vitelli-Avelar DM,Teixeira-Carvalho A,Martins-Filho OA

更新日期：2009-07-01 00:00:00