Molecular comparison of topotypic specimens confirms Anopheles (Nyssorhynchus) dunhami Causey (Diptera: Culicidae) in the Colombian Amazon.


:The presence of Anopheles (Nyssorhynchus) dunhami Causey in Colombia (Department of Amazonas) is confirmed for the first time through direct comparison of mtDNA cytochrome c oxidase I (COI) barcodes and nuclear rDNA second internal transcribed spacer (ITS2) sequences with topotypic specimens of An. dunhami from Tefé, Brazil. An. dunhami was identified through retrospective correlation of DNA sequences following misidentification as Anopheles nuneztovari s.l. using available morphological keys for Colombian mosquitoes. That An. dunhami occurs in Colombia and also possibly throughout the Amazon Basin, is of importance to vector control programs, as this non-vector species is morphologically similar to known malaria vectors including An. nuneztovari, Anopheles oswaldoi and Anopheles trinkae. Species identification of An. dunhami and differentiation from these closely related species are highly robust using either DNA ITS2 sequences or COI DNA barcode. DNA methods are advocated for future differentiation of these often sympatric taxa in South America.


Mem Inst Oswaldo Cruz


Ruiz F,Linton YM,Ponsonby DJ,Conn JE,Herrera M,Quiñones ML,Vélez ID,Wilkerson RC




Has Abstract


2010-11-01 00:00:00














  • Molecular approaches for eco-epidemiological studies of Paracoccidioides brasiliensis.

    abstract::Medical mycology has greatly benefited from the introduction of molecular techniques. New knowledge on molecular genetics has provided both theoretical and practical frameworks, permitting important advances in our understanding of several aspects of pathogenic fungi. Considering Paracoccidioides brasiliensis in parti...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章,评审


    authors: Richini-Pereira VB,Bosco Sde M,Theodoro RC,Macoris SA,Bagagli E

    更新日期:2009-07-01 00:00:00

  • Ergosterol biosynthesis and drug development for Chagas disease.

    abstract::This article presents an overview of the currently available drugs nifurtimox (NFX) and benznidazole (BZN) used against Trypanosoma cruzi, the aetiological agent of Chagas disease; herein we discuss their limitations along with potential alternatives with a focus on ergosterol biosynthesis inhibitors (EBI). These comp...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Urbina JA

    更新日期:2009-07-01 00:00:00

  • Catadiscus pomaceae sp. n. (Trematoda, Paramphistomatidae) from Pomacea canaliculata (Lamarck, 1801) (Prosobranchia, Ampullariidae).

    abstract::Catadiscus pomaceae sp. n. from the intestine of the prosobranch mollusc Pomacea canaliculata (Lamarck, 1801), is described. The host snail was collected from a lenitic biotope belonging to the Riachuelo basin (Corrientes province, Argentina) during 1985-1986. So far the species of the genus Catadiscus Cohn, 1904 have...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Hamann MI

    更新日期:1992-01-01 00:00:00

  • Cytotoxicity of three new triazolo-pyrimidine derivatives against the plant trypanosomatid: Phytomonas sp. isolated from Euphorbia characias.

    abstract::There is no effective chemotherapy against diseases caused by Phytomonas sp., a plant trypanosomatid responsible for economic losses in major crops. We tested three triazolo-pyrimidine complexes [two with Pt(II), and another with Ru(III)] against promastigotes of Phytomonas sp. isolated from Euphorbia characias. The i...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Magán R,Marín C,Salas JM,Barrera-Pérez M,Rosales MJ,Sánchez-Moreno M

    更新日期:2004-10-01 00:00:00

  • Molecular characterisation of newly identified HIV-1 infections in Curitiba, Brazil: preponderance of clade C among males with recent infections.

    abstract::As in many areas of Brazil, the AIDS epidemic in Curitiba is relatively stable, but surveillance is important to support public policy. The molecular characteristics of HIV may be instrumental for monitoring epidemic trends. We evaluated plasma HIV-1 RNA (n = 37) from 38 cases presenting with positive serology, who we...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Ferreira JL,Thomaz M,Rodrigues R,Harrad D,Oliveira CM,Oliveira CA,Batista JP,Ito TS,Brigido LF

    更新日期:2008-12-01 00:00:00

  • Ivermectin resistant and susceptible third-stage larvae of Haemonchus contortus: cholinesterase and phosphatase activities.

    abstract::Cholinesterase and acid phosphatase (AP), but not alkaline phosphatase activities, were detected in cytosolic and membrane-bound fractions of ivermectin resistant and susceptible Haemonchus contortus infective-stage larvae. Some differences in acetylcholinesterase activity of cytosolic fractions and in the AP activity...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Giménez-Pardo C,Martínez-Grueiro MM,Gómez-Barrio A,Rodríguez-Caabeiro F

    更新日期:2004-03-01 00:00:00

  • Protective CD8+ T cell responses against the pre-erythrocytic stages of malaria parasites: an overview.

    abstract::CD8+ T cells have been implicated as critical effector cells in protection against the pre-erythrocytic stage of malaria in mice and humans following irradiated sporozoite immunization. Immunization experiments in animal models by several investigators have suggested different strategies for vaccination against malari...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章,评审


    authors: Oliveira-Ferreira J,Daniel-Ribeiro C

    更新日期:2001-02-01 00:00:00

  • The zinc finger protein TcZFP2 binds target mRNAs enriched during Trypanosoma cruzi metacyclogenesis.

    abstract::Trypanosomes are parasitic protozoa in which gene expression is primarily controlled through the regulation of mRNA stability and translation. This post-transcriptional control is mediated by various families of RNA-binding proteins, including those with zinc finger CCCH motifs. CCCH zinc finger proteins have been sho...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Mörking PA,Rampazzo Rde C,Walrad P,Probst CM,Soares MJ,Gradia DF,Pavoni DP,Krieger MA,Matthews K,Goldenberg S,Fragoso SP,Dallagiovanna B

    更新日期:2012-09-01 00:00:00

  • Effect of angiotensin II and losartan on the phagocytic activity of peritoneal macrophages from Balb/C mice.

    abstract::Angiotensin II (AII), a product of rennin-angiotensin system, exerts an important role on the function of immune system cells. In this study, the effect of AII on the phagocytic activity of mouse peritoneal macrophages was assessed. Mice peritoneal macrophages were cultured for 48 h and the influence of different conc...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Belline P,da Melo PS,Haun M,Palhares FB,Boer PA,Gontijo JA,Figueiredo JF

    更新日期:2004-03-01 00:00:00

  • The depuration dynamics of oysters (Crassostrea gigas) artificially contaminated with hepatitis A virus and human adenovirus.

    abstract::Within the country of Brazil, Santa Catarina is a major shellfish producer. Detection of viral contamination is an important step to ensure production quality and consumer safety during this process. In this study, we used a depuration system and ultraviolet (UV) disinfection to eliminate viral pathogens from artifici...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Corrêa Ade A,Rigotto C,Moresco V,Kleemann CR,Teixeira AL,Poli CR,Simões CM,Barardi CR

    更新日期:2012-02-01 00:00:00

  • Triatoma jatai sp. nov. in the state of Tocantins, Brazil (Hemiptera: Reduviidae: Triatominae).

    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

    pub_type: 杂志文章


    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

  • Comparative genomics reveals diverse capsular polysaccharide synthesis gene clusters in emerging Raoultella planticola.

    abstract::Raoultella planticola is an emerging zoonotic pathogen that is associated with rare but life-threatening cases of bacteremia, biliary tract infections, and urinary tract infections. Moreover, increasing antimicrobial resistance in the organism poses a potential threat to public health. In spite of its importance as a ...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Huang YT,Chuang WY,Ho BC,Wu ZY,Kuo RC,Ko M,Liu PY

    更新日期:2018-08-27 00:00:00

  • Isolation and isoenzyme characterization of Leishmania (Viannia) braziliensis from a case of human cutaneous leishmaniasis in northeast centre of the state of São Paulo.

    abstract::The diagnosis of human cutaneous leishmaniasis in small towns is sometimes made without the species identification of the Leishmania, even in areas without previous epidemiological surveys. Here we report the isolation of a Leishmania strain from a patient of Rincão, state of São Paulo, that was identified by isoenzym...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Pinto MC,Rosa JA,Fernandes ZM,Graminha MA,Mine JC,Allegretti SM,Delort S,Riedel C,Paes EL,Cupolillo E

    更新日期:2005-11-01 00:00:00

  • Effect of treatment with cyclophosphamide in low doses upon the onset of delayed type hypersensitivity in mice chronically infected with Trypanosoma cruzi: involvement of heart interstitial dendritic cells.

    abstract::Acute infection with Trypanosoma cruzi results in intense myocarditis, which progresses to a chronic, asymptomatic indeterminate form. The evolution toward this chronic cardiac form occurs in approximately 30% of all cases of T. cruzi infection. Suppression of delayed type hypersensitivity (DTH) has been proposed as a...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Thé TS,Portella RS,Guerreiro ML,Andrade SG

    更新日期:2013-09-01 00:00:00

  • Sylvatic population of Triatoma infestans from the Bolivian Chaco: from field collection to characterization.

    abstract::A sylvatic Triatoma infestans DM (dark morph) population detected in the Bolivian Chaco was characterized and compared with various domestic ones. The degree of differentiation of DM was clearly within the T. infestans intra-specific level. Nevertheless marked chromatic and morphometric differences as well as differen...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Noireau F,Bastrenta B,Catalá S,Dujardin JP,Panzera F,Torres M,Perez R,Galvão C,Jurberg J

    更新日期:2000-01-01 00:00:00

  • Mansonella ozzardi in Brazil: prevalence of infection in riverine communities in the Purus region, in the state of Amazonas.

    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

    pub_type: 杂志文章


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

    更新日期:2009-02-01 00:00:00

  • Comparative developmental and susceptibility to insecticide of Bolivian and Brazilian populations of Triatoma infestans.

    abstract::The triatomine bug Triatoma infestans probably originated in Bolivia and dispersed passively over wide areas of South America, where it is the principal vector of Trypanosoma cruzi. In the region of its probable origin this species shows colonization in two different ecotopes, so that it may be encountered in sylvatic...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Pires HH,Barbosa SE,Diotaiuti L

    更新日期:2000-11-01 00:00:00

  • Human immunodeficiency virus type 1 Brazilian subtype B variant showed an increasing avidity of the anti-V3 antibodies over time compared to the subtype B US/European strain in São Paulo, Brazil.

    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

    pub_type: 杂志文章


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

    更新日期:2004-02-01 00:00:00

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

    abstract::The tick-bird relationship of 56 specimens of birds (Passeriformes and Columbiformes) collected in the city of Curitiba, State of Paraná, between 1990 and 1995, among which 102 specimens of Ixodes (Multidentatus) auritulus were found and analyzed. New host records were also produced including the first report of I. au...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Arzua M,Barros-Battesti DM

    更新日期:1999-09-01 00:00:00

  • Previous dengue or Zika virus exposure can drive to infection enhancement or neutralisation of other flaviviruses.

    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

    pub_type: 杂志文章


    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

  • The infection of microvascular endothelial cells with ExoU-producing Pseudomonas aeruginosa triggers the release of von Willebrand factor and platelet adhesion.

    abstract::An increased plasma concentration of von Willebrand factor (vWF) is detected in individuals with many infectious diseases and is accepted as a marker of endothelium activation and prothrombotic condition. To determine whether ExoU, a Pseudomonas aeruginosa cytotoxin with proinflammatory activity, enhances the release ...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Freitas C,Assis MC,Saliba AM,Morandi VM,Figueiredo CC,Pereira M,Plotkowski MC

    更新日期:2012-09-01 00:00:00

  • Sandfly species diversity in association with human activities in the Kani tribe settlements of the Western Ghats, Thiruvananthapuram, Kerala, India.

    abstract::Sandfly prevalence in the Kani tribe settlements of Western Ghats in India was investigated. A total of 1,279 sandflies comprising 17 species was obtained. Sandfly abundance showed a negative correlation (r = -0.97, p = 0.003) with increase in altitudinal ranges from 0-1,000 m. When sandfly samples were grouped accord...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Ranganathan S,Swaminathan S

    更新日期:2015-04-01 00:00:00

  • Abdominal angiostrongyliasis can be diagnosed with a immunochromatographic rapid test with recombinant galactin from Angiostrongylus cantonensis.

    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

    pub_type: 杂志文章


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

    更新日期:2020-09-21 00:00:00

  • Mapping of courses on vector biology and vector-borne diseases systems: time for a worldwide effort.

    abstract::Major emergency efforts are being mounted for each vector-borne disease epidemiological crisis anew, while knowledge about the biology of arthropods vectors is dwindling slowly but continuously, as is the number of field entomologists. The discrepancy between the rates of production of knowledge and its use and need f...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Casas J,Lazzari C,Insausti T,Launois P,Fouque F

    更新日期:2016-11-01 00:00:00

  • Schistosoma mansoni heat shock protein 70 elicits an early humoral immune response in S. mansoni infected baboons.

    abstract::A study was undertaken to search for DNA recombinant Schistosoma mansoni proteins responsible for eliciting an antibody response from the host at a very early phase after infection. A S. mansoni adult worm cDNA expression library was screened using pooled sera from baboons with four weeks of infection. Based on their ...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Kanamura HY,Hancock K,Rodrigues V,Damian RT

    更新日期:2002-07-01 00:00:00

  • Enterocytozoon bieneusi detected by molecular methods in raw sewage and treated effluent from a combined system in Brazil.

    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

    pub_type: 杂志文章


    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

  • N-terminal amino acid sequences of the major outer membrane proteins from a Neisseria meningitidis group B strain isolated in Brazil.

    abstract::The four dominant outer membrane proteins (46, 38, 33 and 28 kDa) were detected by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) in a semi-purified preparation of vesicle membranes of a Neisseria meningitidis (N44/89, B:4:P1.15:P5.5,7) strain isolated in Brazil. The N-terminal amino acid sequenc...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: De Simone SG,Soares SA,Souza AL,Danelli MG

    更新日期:1996-01-01 00:00:00

  • Phylogeny, ultrastructure, histopathology and prevalence of Myxobolus oliveirai sp. nov., a parasite of Brycon hilarii (Characidae) in the Pantanal wetland, Brazil.

    abstract::This paper presents the morphological, histological and ultrastructural characteristics of Myxobolus oliveirai sp. nov., a parasite of the gill filaments in Brycon hilarii from the Brazilian Pantanal. Out of 216 B. hilariispecimens examined (126 wild and 90 cultivated), 38.1% of wild specimens (n = 48) were infected. ...

    journal_title:Memorias do Instituto Oswaldo Cruz

    pub_type: 杂志文章


    authors: Milanin T,Eiras JC,Arana S,Maia AA,Alves AL,Silva MR,Carriero MM,Ceccarelli PS,Adriano EA

    更新日期:2010-09-01 00:00:00

  • The level of ascorbate peroxidase is enhanced in benznidazole-resistant populations of Trypanosoma cruzi and its expression is modulated by stress generated by hydrogen peroxide.

    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

    pub_type: 杂志文章


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

    更新日期:2012-06-01 00:00:00

  • Chemoresistance of Plasmodium falciparum and Plasmodium vivax parasites in Brazil: consequences on disease morbidity and control.

    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

    pub_type: 杂志文章


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

    更新日期:2011-08-01 00:00:00