Onchocerciasis in Ecuador: the situation in 1989.

abstract：:Thermophilic campylobacters were isolated from three sewage plants in Rio de Janeiro, RJ, Brazil and identified. Laboratory analysis of 390 sewage samples showed the presence of 169 thermophilic strains. The results demonstrated that human and animal pathogenic biotypes could be isolated from activated sludge during t...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Lauria-Filgueiras AL,Hofer E

更新日期：1998-05-01 00:00:00

abstract：:This study was undertaken to investigate the prevalence of Mansonella ozzardi infection and to estimate the parasitic infection rate (PIR) in simuliid black flies in the municipality of Pauini, Amazonas, Brazil. We used thick blood films to examine 921 individuals in 35 riverine communities along the Pauini and Purus ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Medeiros JF,Py-Daniel V,Barbosa UC,Izzo TJ

更新日期：2009-02-01 00:00:00

abstract：:The lack of an experimental animal model for the study of dengue pathogenesis is a limiting factor for the development of vaccines and drugs. In previous studies, our group demonstrated the susceptibility of BALB/c mice to infection by dengue virus (DENV) 1 and 2, and the virus was successfully isolated in several org...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Rasinhas ADC,Silva MAND,Caldas GC,Jácome FC,Leonardo R,Santos FBD,Nunes PCG,Barth OM,Barreto-Vieira DF

更新日期：2018-02-05 00:00:00

abstract：:The direct agglutination test (DAT) based on a freeze-dried antigen and the rK39 dipstick test were evaluated for the sero-diagnosis of visceral leishmaniasis (VL). The sensitivity and specificity of both tests were determined using sera from confirmed VL patients (n = 21), healthy controls (n = 19) and from patients ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Schallig HD,Canto-Cavalheiro M,da Silva ES

更新日期：2002-10-01 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：:The Global Burden of Disease Study 2010 listed schistosomiasis among the leading 100 causes of death in Brazil, responsible for 3.6% of the estimated total of deaths globally. Eye and adnexa are very rarely affected by schistosomiasis mansoni, with limited documentation of ocular pathology in this setting. This short ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Fidelis TAA,Brasileiro-Filho G,Santos HH,Vasconcelos-Santos DV,Parreiras PM,Coelho PMZ,Araujo N,Chaud MV,Lambertucci JR

更新日期：2019-01-01 00:00:00

abstract：:Since the emergence of West Nile virus (WNV) in North America in 1999, there have been several reports of WNV activity in Central and South American countries. To detect WNV in Brazil, we performed a serological survey of horses from different regions of Brazil using recombinant peptides from domain III of WNV. Positi...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Silva JR,Medeiros LC,Reis VP,Chavez JH,Munhoz TD,Borges GP,Soares OA,Campos CH,Machado RZ,Baldani CD,Silva ML,Faria JL,Silva EE,Figueiredo LT

更新日期：2013-11-01 00:00:00

abstract：:In visceral leishmaniasis, phlebotomine vectors are targets for control measures. Understanding the ecosystem of the vectors is a prerequisite for creating these control measures. This study endeavours to delineate the suitable locations of Phlebotomus argentipes with relation to environmental characteristics between ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Kesari S,Bhunia GS,Kumar V,Jeyaram A,Ranjan A,Das P

更新日期：2011-08-01 00:00:00

abstract：:Triatoma jatai sp. nov. is the first new species of triatomine to be described in the state of Tocantins, in the northern region of Brazil. It was caught on rock outcrops in the wild environment and, more recently, invading homes. While T. jatai sp. nov. is morphologically similar to Triatoma costalimai, it is disting...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Gonçalves TC,Teves-Neves SC,Santos-Mallet JR,Carbajal-de-la-Fuente AL,Lopes CM

更新日期：2013-06-01 00:00:00

abstract：:As pyrethroids are presently the favored group of insecticides to control triatomines, we performed a series of bioassays to determine the intrinsic activity of some of the main compounds used in the control campaigns, against five of the main species of triatomines to be controlled. Comparing the insecticides it can ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Oliveira Filho AM

更新日期：1999-01-01 00:00:00

abstract：:Mutations in the rpoB locus confer conformational changes leading to defective binding of rifampin (RIF) to rpoB and consequently resistance in Mycobacterium tuberculosis. Polymerase chain reaction-single-strand conformation polymorphism (PCR-SSCP) was established as a rapid screening test for the detection of mutatio...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Isfahani BN,Tavakoli A,Salehi M,Tazhibi M

更新日期：2006-09-01 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：:Living in close association with a vertebrate host and feeding on its blood requires different types of adaptations, including behavioural adjustments. Triatomines exhibit particular traits associated with the exploitation of their habitat and food sources and these traits have been the subject of intense analysis. Ma...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Lazzari CR,Lorenzo MG

更新日期：2009-07-01 00:00:00

abstract：:Molecular evidence showed 46.2% of Trypanosoma cruzi infection in Mepraia spinolai insects from North-Central Chile, which is significantly higher than previous reports of up to 26% by microscopic observation. Our results show similar infection levels among nymphal stages, ranging from 38.3 to 54.1%, indicating that y...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Botto-Mahan C,Ortiz S,Rozas M,Cattan PE,Solari A

更新日期：2005-05-01 00:00:00

abstract：BACKGROUND:Fibrosis in the peripheral nerve is the end stage of leprous neuropathy and the cause of the resulting permanent neural function impairments. Preventive measures to avoid this irreversible pathological state are a relief strategy for leprosy sufferers. OBJECTIVES:The present study describes the frequency of...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Antunes SLG,Jardim MR,Vital RT,Pascarelli BMO,Nery JADC,Amadeu TP,Sales AM,da Costa EAF,Sarno EN

更新日期：2019-01-01 00:00:00

abstract：:Different molecular-genetic methods were used to identify a cohort of Leishmania strains from natural foci of zoonotic cutaneous leishmaniasis located in Central Asia, on the former USSR territory. The results obtained using isoenzymes, PCR, restriction fragment length polymorphisms of kDNA and molecular hybridization...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Strelkova MV,Pacheco RS,Bulat SA,Rakitskaya TA

更新日期：1997-01-01 00:00:00

abstract：:Trypanosoma rangeli, a parasite generally considered non-pathogenic for man, is the second species of human trypanosome to be reported from the New World. The geographical distribution of T. rangeli often overlaps with that of T. cruzi, the same vertebrate and invertebrate hosts being infected. Their differentiation t...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Guhl F,Vallejo GA

更新日期：2003-06-01 00:00:00

abstract：:In C57Bl/6 strain mice vaccinated with radiation-attenuated cercariae of Schistosoma mansoni immune elimination of challenge parasites occurs in the lungs. Leucocytes were recovered from the lungs of such mice by bronchoalveolar lavage and cultured in vitro with larval antigen; the profile of cytokines released was th...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Wilson RA

更新日期：1992-01-01 00:00:00

abstract：:Between 1985 and 2000, epidemiological surveys of the American tegumentary leishmaniasis (ATL) were carried out in several rural and urban communities in Espírito Santo, Brazil. A total of 100 stocks of Leishmania (comprising isolates from both human and canine hosts with ATL) were identified by two methods of molecul...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Falqueto A,Sessa PA,Ferreira AL,Vieira VP,Santos CB,Varejão JB,Cupolillo E,Porrozzi R,Carvalho-Paes LE,Grimaldi Júnior G

更新日期：2003-12-01 00:00:00

abstract：BACKGROUND:CD64 (FcγR1) is a high-affinity receptor for monomeric IgG1 and IgG3. Circulating neutrophils express very low amounts of CD64 on their surface. OBJECTIVES:Our primary aim was to investigate the utility of neutrophil CD64 surface expression as a biomarker of active pulmonary tuberculosis (TB). We hypothesis...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Corrêa RDS,Rodrigues LS,Pereira LHL,Nogueira OC,Leung J,Sousa MDS,Hacker MA,Siqueira HR,Capone D,Alves RLR,Pessolani MCV,Schmitz V,Pereira GMB

更新日期：2019-01-01 00:00:00

abstract：:Ascorbate peroxidases (APX) are class I heme-containing enzymes that convert hydrogen peroxide into water molecules. The gene encoding APX has been characterized in 11 strains of Trypanosoma cruzi that are sensitive or resistant to benznidazole (BZ). Bioinformatic analysis revealed the presence of two complete copies ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Nogueira FB,Rodrigues JF,Correa MM,Ruiz JC,Romanha AJ,Murta SM

更新日期：2012-06-01 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：:The diagnosis of single-lesion paucibacillary leprosy remains a challenge. Reviews by expert dermatopathologists and quantitative polymerase chain reaction (qPCR) results obtained from 66 single-plaque biopsy samples were compared. Histological findings were graded as high (HP), medium (MP) or low (LP) probability of ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Barbieri RR,Sales AM,Illarramendi X,Moraes MO,Nery JA,Moreira SJ,Sarno EN,Machado Ade M,Bozza FA

更新日期：2014-11-01 00:00:00

abstract：:A new species of the genus Cotylophoron (Trematoda--Paramphistomidae) --Cotylophoron travassosi sp. n.--is described. The measurements of the worm and its structures are compared with the valid known species. ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Costa HM,Guimaráes MP

更新日期：1992-01-01 00:00:00

abstract：:The Brazilian variant of human immunodeficiency virus type 1 (HIV-1) subtype B, (serotype B"-GWGR), has a tryptophan replacing the proline in position 328 the HIV-1 envelope. A longer median time period from infection to acquired immunodeficiency syndrome (AIDS) for serotype B (B"-GWGR) infected subjects compared to t...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Casseb J,Montanheiro P,Komninakis S,Brito A,Duarte AJ

更新日期：2004-02-01 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：:A virus antigenic characterization methodology using an indirect method of antibody detection ELISA with virus-infected cultured cells as antigen and a micro virus neutralisation test using EIA (NT-EIA) as an aid to reading were used for antigenic characterization of Jatobal (BeAn 423380). Jatobal virus was characteri...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Figueiredo LT,Da Rosa AP

更新日期：1988-04-01 00:00:00

abstract：:After the acute hyperergic phase of schistosomal infection, the chronic phase of the disease corresponds to the establishment of a relative equilibrium between the host and the parasite. This involves: (1) A shift from the predominance of the TH2 response observed in the acute phase, to the predominance of the TH1 res...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Borojevic R

更新日期：1992-01-01 00:00:00

abstract：:The aim of the current paper was to study in the state of Sergipe the population distribution and interactions between two species of Biomphalaria, the snail vectors of Schistosoma mansoni in the northeastern Brazil. Data collected in 1969 showed that B. straminea, with only one exception, was limited to the semi-dry ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Figueiredo CC

更新日期：1989-07-01 00:00:00

abstract：BACKGROUND:Dengue virus (DENV) has circulated in Brazil for over 30 years. During this time, one serotype has cyclically replaced the other, until recently, when all four distinct serotypes began to circulate together. Persistent circulation of DENV for long time periods makes sequential infections throughout a person'...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Oliveira RA,de Oliveira-Filho EF,Fernandes AI,Brito CA,Marques ET,Tenório MC,Gil LH

更新日期：2019-01-01 00:00:00