Serological based monitoring of a cohort of patients with chronic Chagas disease treated with benznidazole in a highly endemic area of northern Argentina.

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：:Domiciliated Rhodnius prolixus and sylvatic R. colombiensis were analyzed in order to confirm their genetic divergence and verify the risk that the latter represents in the domiciliation process, and to provide tools for identifying the sources of possible reinfestation by triatomines in human dwellings allowing contr...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Jaramillo C,Montaña MF,Castro LR,Vallejo GA,Guhl F

更新日期：2001-11-01 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：:This study investigated the rate of human papillomavirus (HPV) persistence, associated risk factors, and predictors of cytological alteration outcomes in a cohort of human immunodeficiency virus-infected pregnant women over an 18-month period. HPV was typed through L1 gene sequencing in cervical smears collected durin...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Meyrelles AR,Siqueira JD,Santos PP,Hofer CB,Luiz RR,Seuánez HN,Almeida G,Soares MA,Soares EA,Machado ES

更新日期：2016-02-01 00:00:00

abstract：:Lapachol was chemically modified to obtain its thiosemicarbazone and semicarbazone derivatives. These compounds were tested for antimicrobial activity against several bacteria and fungi by the broth microdilution method. The thiosemicarbazone and semicarbazone derivatives of lapachol exhibited antimicrobial activity a...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Souza MA,Johann S,Lima LA,Campos FF,Mendes IC,Beraldo H,Souza-Fagundes EM,Cisalpino PS,Rosa CA,Alves TM,de Sá NP,Zani CL

更新日期：2013-05-01 00:00:00

abstract：:Hepatosplenic schistosomiasis was the first human disease in which the possibility of extensive long standing hepatic fibrosis being degraded and removed has been demonstrated. When such changes occurred, the main signs of portal hypertension (splenomegaly, esophageal varices) progressively disappeared, implying that ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Andrade ZA,Baptista AP,Santana TS

更新日期：2006-09-01 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：:A 19-month mark-release-recapture study of Neotoma micropus with sequential screening for Leishmania mexicana was conducted in Bexar County, Texas, USA. The overall prevalence rate was 14.7% and the seasonal prevalence rates ranged from 3.8 to 26.7%. Nine incident cases were detected, giving an incidence rate of 15.5/...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Raymond RW,McHugh CP,Witt LR,Kerr SF

更新日期：2003-03-01 00:00:00

abstract：:Triatoma nitida was found in 14 (0.4%) out of 3,726 houses located in six departments across Guatemala, which were surveyed from 1994 to 1998 by the man-hour collection method. Compared to previous information, the distribution of T. nitida in Guatemala has increased from five to nine departments; the species is prese...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Monroy C,Bustamante DM,Rodas A,Rosales R,Mejía M,Tabaru Y

更新日期：2003-01-01 00:00:00

abstract：:To compare the epidemiological profile and socioeconomic factors associated to the infection by Schistosoma mansoni in a rural and an urban endemic area a cross-sectional study was performed in Agua Branca de Minas (rural area) and Bela Fama (urban area), both situated in the State of Minas Gerais, Brazil. Two hundred...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Amorim MN,Rabello A,Contreras RL,Katz N

更新日期：1997-09-01 00:00:00

abstract：:Immunoblot analysis was used to investigate antigenic differences among clinical isolates of Leishmania amazonensis and their role in the etiology of the disease. Western blots of promastigote homogenates were analyzed with either monoclonal antibodies (MAbs) specific for the L. mexicana complex (M-4, M-6, M-9, and M-...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Leon LL,Machado GM,Barral A,de Carvalho-Paes LE,Grimaldi Júnior G

更新日期：1992-04-01 00:00:00

abstract：:The evolutionary relationships of sand flies and Leishmania are discussed in this report, which draws distinctions between co-association, co-evolution and co-speciation (or co-cladogenesis). Examples focus on Phlebotomus vectors of Le. infantum and Le. major in the Mediterranean subregion. ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Ready P

更新日期：2000-07-01 00:00:00

abstract：:Dipteran polytene chromosomes provide an excellent model for understanding in species complexes, as well as for structural and functional cytogenetics. The status of species in the Culex pipiens complex is controversial and the use of polytene chromosomes for cytogenetic analysis in the subfamily Culicinae has been di...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Campos J,Andrade CF,Recco-Pimentel SM

更新日期：2003-04-01 00:00:00

abstract：:In Brazil, malaria still remains a clinically important febrile syndrome for local populations and travelers, occurring mostly in the Amazon Basin. This review aims to report the main efforts employed to control this disease since the 1940s and the emergence of Plasmodium falciparum and Plasmodium vivax chemoresistanc...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Gama BE,Lacerda MV,Daniel-Ribeiro CT,Ferreira-da-Cruz Mde F

更新日期：2011-08-01 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：: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：:Five parasites are described in the lizard Amphisbaena alba (Amphisbaenidae) from the state of Par , North Brazil. Mature oocysts of Choleoeimeria amphisbaenae n. sp., are passed already mature in the faeces. They are ellipsoidal-cylindrical, average 33.7 x 22.8 m and are devoid of micropyle, oocyst residuum or polar...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Lainson R

更新日期：2003-10-01 00:00:00

abstract：:We characterized the Plasmodium falciparum antigen 332 (Ag332) which is specifically expressed during the asexual intraerythrocytic cycle of the parasite. The corresponding Pf332 gene has been located in the subtelomeric region of chromosome 11. Furthermore, it is present in all strains so far analyzed and shows marke...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Mattei D,Scherf A

更新日期：1992-01-01 00:00:00

abstract：:A major goal in the treatment of acute ischemia of a vascular territory is to restore blood flow to normal values, i.e. to "reperfuse" the ischemic vascular bed. However, reperfusion of ischemic tissues is associated with local and systemic leukocyte activation and trafficking, endothelial barrier dysfunction in postc...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Souza DG,Teixeira MM

更新日期：2005-03-01 00:00:00

abstract：:Positive Montenegro's skin test is a delayed type hypersensitivity reaction widely used as indicative of previous infection with Leishmania in both humans and dogs. Montenegro's antigen consists of a crude Leishmania antigen solution, usually containing thimerosal as preserving agent. In this work it is shown that a l...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Paranhos-Silva M,Pontes-de-Carvalho LC,de Sá Oliveira GG,Nascimento EG,dos-Santos WL

更新日期：2001-07-01 00:00:00

abstract：BACKGROUND:The detection of live Mycobacterium leprae in soil and animals other than humans suggests that the environment plays a role in the transmission of leprosy. OBJECTIVE:The objective of this study was to investigate the presence of viable M. leprae in natural water sources used by the local population in five ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Arraes MLBM,Holanda MV,Lima LNGC,Sabadia JAB,Duarte CR,Almeida RLF,Kendall C,Kerr LRS,Frota CC

更新日期：2017-12-01 00:00:00

abstract：:The objectives of this work were to determine the prevalence of Babesia bovis, Babesia bigemina, and Anaplasma marginale detecting antibodies in cattle raised in the semi-arid region of the state of Bahia, Brazil, through indirect enzyme linked immunosorbent assays (ELISA) and to compare the performances of indirect e...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Barros SL,Madruga CR,Araújo FR,Menk CF,de Almeida MA,Melo EP,Kessler RH

更新日期：2005-10-01 00:00:00

abstract：:Penicillin tolerance among 67 strains of beta-hemolytic streptococci was examined by determining the ratio of the minimal bactericidal concentration to the minimal inhibitory concentration as 32 or greater. Tolerance was demonstrated in 15 group A strains and in 11.7, and 4 of groups B, C and G, respectively. Thereaft...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Avelino CC,Benchetrit LC

更新日期：1995-07-01 00:00:00

abstract：:This report describes the development of a SYBR Green I based real time polymerase chain reaction (PCR) protocol for detection on the ABI Prism 7000 instrument. Primers targeting the gene encoding the SSU rRNA were designed to amplify with high specificity DNA from Schistosoma mansoni, in a real time quantitative PCR ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Gomes AL,Melo FL,Werkhauser RP,Abath FG

更新日期：2006-09-01 00:00:00

abstract：:Antibodies against heart vascular structures and striated muscle cells interstitium (EVI antibodies) persist in Chagas' disease patients who had been cured by specific treatment as demonstrated by negative xenodiagnosis, conventional serology (CS) and complement mediated lysis (CoML). On the other hand, EVI antibodies...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Brener Z,Ramirez LE,Krettli AU,Cançado JR

更新日期：1983-10-01 00:00:00

abstract：:A pseudogene, designated as "ps(5.8S+ITS-2)", paralogous to the 5.8S gene and internal transcribed spacer (ITS)-2 of the nuclear ribosomal DNA (rDNA), has been recently found in many triatomine species distributed throughout North America, Central America and northern South America. Among characteristics used as crite...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Zuriaga MA,Mas-Coma S,Bargues MD

更新日期：2015-05-01 00:00:00

abstract：:This article reviews current concepts of the biology of Endotrypanum spp. Data summarized here on parasite classification and taxonomic divergence found among these haemoflagellates come from our studies of molecular characterization of Endotrypanum stocks (representing an heterogenous population of reference strains ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Franco AM,Grimaldi G Jr

更新日期：1999-03-01 00:00:00

abstract：:Morphometrics of Brazilian strains (BH, SJ and CMO) of Schistosoma mansoni cercariae were obtained with a computerized image analyzer (IMAGE PRO PLUS, MEDIA CYBERNETICS), considering the following characters: body area, tail, furcae, oral and ventral suckers and distance between them. For statistical analysis, the var...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Machado-Silva JR,da Silva CH,Pereira MJ,de Oliveira RM,Pinto RM,Gomes DC

更新日期：2000-11-01 00:00:00

abstract：:Sand fly identification is complex because it depends on the expertise of the taxonomist. The females show subtle morphological differences and the occurrence of the species complexes are usual in this taxon. Therefore, a fragment of the cytochrome c oxidase subunit I (COI) gene is used for taxon barcoding to resolve ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Laurito M,Ontivero IM,Almirón WR

更新日期：2019-11-28 00:00:00

abstract：:Twenty six coprolites from an archaeological site in the province of Iquique, northern Chile, were examined for parasites. Coprolites were found in two excavation units, I and II (Tiliviche site), dated respectively at 5,900 B.C. to 4,110 B.C. and 4,110 B.C. to 1,950 B.C., and identified as of human origin. Only at th...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Ferreira LF,de Araújo AJ,Confalonieri UE,Nuñez L

更新日期：1984-04-01 00:00:00