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Montanhaur ADRS, Lima EDO, Delafiori J, Esteves CZ, Prado CCR, Allegretti SM, Ueta MT, Levy CE, Catharino RR. Metabolic alterations in Strongyloidiasis stool samples unveil potential biomarkers of infection. Acta Trop 2022; 227:106279. [PMID: 34968451 DOI: 10.1016/j.actatropica.2021.106279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 12/03/2021] [Accepted: 12/11/2021] [Indexed: 11/01/2022]
Abstract
Strongyloidiasis, a parasitosis caused by Strongyloides stercoralis in humans, is a very prevalent infection in tropical or subtropical areas. Gaps on public health strategies corroborates to the high global incidence of strongyloidiasis especially due to challenges involved on its diagnosis. Based on the lack of a gold-standard diagnostic tool, we aimed to present a metabolomic study for the assessment of stool metabolic alterations. Stool samples were collected from 25 patients segregated into positive for strongyloidiasis (n = 10) and negative control (n = 15) and prepared for direct injection high-resolution mass spectrometry analysis. Using metabolomics workflow, 18 metabolites were annotated increased or decreased in strongyloidiasis condition, from which a group of 5 biomarkers comprising caprylic acid, mannitol, glucose, lysophosphatidylinositol and hydroxy-dodecanoic acid demonstrated accuracy over 89% to be explored as potential markers. The observed metabolic alteration in stool samples indicates involvement of microbiota remodeling, parasite constitution, and host response during S. stercoralis infection.
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Guimarães CBDS, Pflanzer Junior SB, Pinheiro HP, Mendes TMF, Ueta MT. Centesimal composition and meat yield of Hoplias malabaricus: association with intestinal parasites. ACTA ACUST UNITED AC 2021; 30:e021120. [PMID: 33909835 DOI: 10.1590/s1984-29612021020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 02/19/2021] [Indexed: 05/31/2023]
Abstract
Hoplias malabaricus is a non-migratory fish commonly found in the Mogi Guaçu River basin, mainly feeding on fish, small crustaceans and insects. It forms part of the diet for humans, birds and some mammals. This fish has great nutritional value, with both good quality and good quantities of essential vitamins and amino acids. Regarding parasitic fauna, this fish can host different species of helminths in its gastrointestinal tract. The aim of the present study was to investigate the possible interference of parasitism in the meat yield from H. malabaricus and the centesimal composition. For this purpose, fish specimens were collected from marginal lagoons of the Mogi Guaçu River (Pirassununga, state of São Paulo, Brazil) using hooks and fishing nets. We found that all specimens of H. malabaricus were parasitized by at least one species, including larvae of Contracaecum sp. (Nematoda: Anisakidae). Parasitism did not have any significant influence on centesimal composition, but meat yield was negatively correlated with the abundance of larvae.
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Affiliation(s)
| | - Sergio Bertelli Pflanzer Junior
- Faculdade de Engenharia de Alimentos, Departamento de Tecnologia de Alimentos, Universidade de Campinas - UNICAMP, Campinas, SP, Brasil
| | - Hildete Prisco Pinheiro
- Instituto de Matemática, Estatística e Computação Científica, Departamento de Estatística, Universidade de Campinas - UNICAMP, Campinas, SP, Brasil
| | | | - Marlene Tiduko Ueta
- Instituto de Biologia, Departamento de Biologia Animal, Universidade de Campinas - UNICAMP, Campinas, SP, Brasil
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Corrêa LL, Takemoto RM, Ueta MT, Adriano EA. New records and prevalence of metazoan parasites of fish in the southeastern Brazilian region. Ann Parasitol 2020; 66:27–37. [PMID: 32198993 DOI: 10.17420/ap6601.235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Hoplias aff. malabaricus is abundant in the Mogi-Guaçu River. The aim of this study was to perform an inventory of the species of metazoan that parasite this species of fish taken from oxbow lakes of the Mogi-Guaçu River. The Mann-Whitney test was used to statistically analyze the possible influence of the sex of the host on the group with the highest parasite richness and the greatest abundance of parasites. Simpson’s diversity index was used to determine parasite diversity among the zoological groups of parasites of H. aff. malabaricus with the highest index. A total of 78 specimens of H. aff. malabaricus were examined. Among the zoological groups of metazoans found, the phylum Nematoda had the greatest number of species. Among these, the larval stage of Contracaecum sp. was most abundant. The sex of the host had a significant effect, with parasites more abundant in female fish (Z(U)=0.043; p<0.05). The digenean Parspina argentinensis, the nematodes Procamallanus (S.) iheringi, Rhabdochona acuminata and Hysterothylacium sp. and copepods Vaigamus sp. and Lernaea cyprinacea have not previously been recorded as parasites of H. aff. malabaricus.
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Affiliation(s)
- Lincoln Lima Corrêa
- Universidade Federal do Oeste do Pará-UFOPA-Instituto de Ciências e Tecnologia das Águas-ICTA, Rua Vera Paz, S/n – Campus Tapajós Bairro Salé, CEP 68040-255, Santarém, PA, Brazil
| | - Ricardo Massato Takemoto
- Laboratório de Ictioparasitologia, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura - Nupélia, Bloco G-90. Av. Colombo, 5790, 87020-900 Maringá, PR, Brazil
| | - Marlene Tiduko Ueta
- Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Caixa Postal 6109, CEP 13083-970 Campinas, SP, Brazil
| | - Edson Aparecido Adriano
- Departamento de Ciências Biológicas, Universidade Federal de São Paulo (UNIFESP), Rua Professor Artur Riedel, 275, Jardim Eldorado, CEP 09972-270 Diadema, SP, Brazil
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Mendes TMF, Filho DVB, Bataglioli AS, do Prado AP, Madi RR, Ueta MT, Pinto MC, Allegretti SM. Bovine fasciolisis in São Paulo state, Brazil. Vet Parasitol Reg Stud Reports 2019; 17:100293. [PMID: 31303221 DOI: 10.1016/j.vprsr.2019.100293] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 01/18/2019] [Accepted: 04/23/2019] [Indexed: 11/18/2022]
Abstract
Fasciolosis is a zoonotic disease with a worldwide distribution caused by Fasciola hepatica, which leads to severe economic losses in cattle such as reducing meat and milk production, livers condemnation, growth retardation and increase in mortality. From October 2008 to April 2011, condemned bovine livers in slaughterhouses of different municipalities from São Paulo state, Brazil were evaluated for the presence of Fasciola hepatica. Out of 20,635 analyzed livers, 1422 were infected with F. hepatica. These cattle came from 33 municipalities, out of which 16 showed infected animals and where 7 municipalities did not show statistical difference between each month throughout the year: Tuiuti - 276/1408 (19,6%), Atibaia - 44/257 (17,1%), Joanópolis - 116/738 (15,7%), Bragança Paulista - 318/2316 (13,3%), Piracaia - 182/1442 (12,6%), Santo Antonio de Posse - 118/1005 (11,7%), Amparo 131/2003 (6,5%). The other nine municipalities, Monte Alegre do Sul, Descalvado, Campinas, Morungaba, Pedreira, Socorro, Munhoz, Jaguariúna and Itatiba showed a positive percentage varying from 5.08% to 1.46%. Our results demonstrated the presence of F. hepatica in this region was higher than official data, bringing the need for control measures. There is also an apparent increase in fasciolosis two to three months after low to medium precipitation, however high precipitation causes a decrease in fasciolosis prevalence.
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Affiliation(s)
| | - David Vilas Boas Filho
- Biology Institute, Animal Biology Department, Campinas State University (UNICAMP), SP, Brazil
| | - Acácio Santo Bataglioli
- Biology Institute, Animal Biology Department, Campinas State University (UNICAMP), SP, Brazil
| | - Angelo Pires do Prado
- Biology Institute, Animal Biology Department, Campinas State University (UNICAMP), SP, Brazil
| | | | - Marlene Tiduko Ueta
- Biology Institute, Animal Biology Department, Campinas State University (UNICAMP), SP, Brazil
| | - Mara Cristina Pinto
- Biological Science Department, F.C.F., São Paulo State University (UNESP), Araraquara, SP, Brazil
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Rodrigues RM, Gonçalves ALR, Silva NM, Cardoso CRDB, Araújo NR, Coutinho LB, Alves R, Ueta MT, Costa-Cruz JM. Inducible nitric oxide synthase controls experimental Strongyloides infection. Parasite Immunol 2018; 40:e12576. [PMID: 30035318 DOI: 10.1111/pim.12576] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Revised: 06/18/2018] [Accepted: 07/19/2018] [Indexed: 12/12/2022]
Abstract
Infection with Strongyloides sp. induces a host immune response, predominantly the Th2 type, that is able to eliminate the parasite. However, little is known about the role of the nitric oxide (NO) mediator, induced by the enzyme nitric oxide synthase (NOS), in strongyloidiasis. Therefore, in this study, we investigated the immune response of mice genetically deficient in the enzyme inducible nitric oxide synthase (iNOS-/- ), infected with Strongyloides venezuelensis. C57BL/6 wild-type (WT) and iNOS-/- mice were individually inoculated by subcutaneous injection of 3000 S. venezuelensis L3 larvae. In the absence of iNOS, mice were more susceptible to the infection than WT animals, in which the parasite was completely eliminated. The overall production of cytokines and specific IgG, IgG1 or IgE antibodies against the parasite was significantly lowered in infected iNOS-/- mice. The expression of iNOS was observed in the intestine of WT hosts but mainly in the wall of the parasite, despite the presence of iNOS in mice. Altogether, we concluded that iNOS expression may play an important role in the control of S. venezuelensis infection.
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Affiliation(s)
| | - Ana Lúcia Ribeiro Gonçalves
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Neide Maria Silva
- Laboratório de Imunopatologia, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Cristina Ribeiro de Barros Cardoso
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | | | - Loyane Bertagnolli Coutinho
- Laboratório de Imunopatologia, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Ronaldo Alves
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Marlene Tiduko Ueta
- Departamento de Parasitologia, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Julia Maria Costa-Cruz
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
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Molina JP, Madi RR, Solferini VN, Ceccarelli PS, Pinheiro HP, Ueta MT. Trypanosomatids (Protozoa: Kinetoplastida) in three species of Armored Catfish from Mogi-Guaçu river, Pirassununga, São Paulo, Brazil. ACTA ACUST UNITED AC 2018; 25:131-41. [PMID: 27334813 DOI: 10.1590/s1984-29612016027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 11/13/2015] [Indexed: 11/22/2022]
Abstract
Trypanosome infections have been reported in several species of fish, in majority of cases described on the basis of morphological characteristics. Trypanosomes in fish are heteroxenous and transmitted by hirudineans. This study aims to evaluate the prevalence and density of infections by Trypanosoma sp. in blood from three species of catfish, Hypostomus regani, H. strigaticeps, H. albopunctatus, from the Mogi Guaçu River, Pirassununga, São Paulo, Brazil. Further, this study intends to characterize the Trypanosoma specimens found in the blood of these fish by morphological and molecular techniques. The trypanosomes overall prevalence observed was 47.6% with a general average density of 0.75 parasites/µl of blood. Hypostomus regani and Hypostomus strigaticeps showed a significant difference in prevalence. The average densities of parasites were not significantly different among the three fish species. Similar findings were observed for the monthly variations in densities. The parasites found in the three species of catfish studied showed similar morphological characteristics. The morphological data and the statistical analyses used in this study didn't show the formation of groups. The analyses provided evidence of the presence of pleomorphisms in the trypanosomes found in the three studied fish.
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Affiliation(s)
- Julia Pereira Molina
- Instituto de Biologia, Universidade Estadual de Campinas, Universidade Estadual de Campinas, Campinas SP , Brasil, Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas - UNICAMP, Campinas, SP, Brasil
| | - Rubens Riscala Madi
- Instituto de Tecnologia e Pesquisa, Universidade Tiradentes, Universidade Tiradentes, Aracaju SE , Brasil, Laboratório de Biologia Tropical, Instituto de Tecnologia e Pesquisa, Universidade Tiradentes - UNIT, Aracaju, SE, Brasil
| | - Vera Nisaka Solferini
- Instituto de Biologia, Universidade Estadual de Campinas, Universidade Estadual de Campinas, Campinas SP , Brasil, Laboratório de Diversidade Genética, Departamento de Genética e Evolução e Bioagentes, Instituto de Biologia, Universidade Estadual de Campinas - UNICAMP, Campinas, SP, Brasil
| | - Paulo Sérgio Ceccarelli
- Centro de Pesquisa e Gestão dos Recursos Pesqueiros Continentais, Instituto Chico Mendes de Conservação da Biodiversidade, Pirassununga SP , Brasil, Centro de Pesquisa e Gestão dos Recursos Pesqueiros Continentais - CEPTA, Instituto Chico Mendes de Conservação da Biodiversidade - ICMBio, Pirassununga, SP, Brasil
| | - Hildete Prisco Pinheiro
- Instituto de Matemática, Estatística e Computação Científica, Universidade Estadual de Campinas, Universidade Estadual de Campinas, Campinas SP , Brasil, Instituto de Matemática, Estatística e Computação Científica, Universidade Estadual de Campinas - UNICAMP, Campinas, SP, Brasil
| | - Marlene Tiduko Ueta
- Instituto de Biologia, Universidade Estadual de Campinas, Universidade Estadual de Campinas, Campinas SP , Brasil, Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas - UNICAMP, Campinas, SP, Brasil
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7
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Müller MI, Ceccarelli PS, Ueta MT. Supplementary studies on Anacanthorus penilabiatus and Mymarothecium viatorum (Monogenea: Dactylogyridae) from Piaractus mesopotamicus (Characiformes: Serrasalmidae) in Brazil. Acta Parasitol 2016; 61:508-15. [PMID: 27447213 DOI: 10.1515/ap-2016-0067] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 03/07/2016] [Indexed: 11/15/2022]
Abstract
The dactylogyrid monogeneans Anacanthorus penilabiatus (Boeger, Husak and Martins, 1995) and Mymarothecium viatorum(Boeger, Piasecki and Sobecka, 2002), commonly found in large quantities in farmed Piaractus mesopotamicus (Holmberg, 1887) in Brazil, were collected from three fish farms located in the State of São Paulo, Brazil. Morphological and molecular identification, scanning electron microscopy, histopathological and descriptive parameters data were performed. A total of 278 specimens of P. mesopotamicus were gathered from February 2008 and July 2010. Prevalence (P) and mean intensity of infection (MII) data was taken at each location. The data showed prevalence and mean intensity of infection annually, with numbers such as P = 91.2% and MII = 50 worms/fish (Pirassununga), P = 60% and MII = 39.2 worms/fish (Mogi Mirim), and P = 100% and MII = 204.8 worms/fish (Itapira). Histopathological results showed hyperplasia of the secondary lamellae, and hypersecretion of mucus was also observed. A phylogenetic topology was inferred using complete SSU (18S) ribosomal rDNA, positioning Anacanthorus penilabiatus and Mymarothecium viatorum among other monopisthocotyleans available in GenBank.
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Corrêa LL, Karling LC, Takemoto RM, Ceccarelli PS, Ueta MT. Hematological parameters of Hoplias malabaricus (Characiformes: Erythrinidae) parasitized by Monogenea in lagoons in Pirassununga, Brazil. Rev Bras Parasitol Vet 2014; 22:457-62. [PMID: 24473868 DOI: 10.1590/s1984-29612013000400003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 04/18/2013] [Indexed: 11/22/2022]
Abstract
Hematology is an important pathological and diagnostic tool. This paper describes the hematological parameters of 76 specimens of Hoplias malabaricus infested with monogenean parasites, which were collected from two lagoons. The hematological parameters included: erythrocyte count (Er), microhematocrit (Hct), hemoglobin (Hb), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH) and mean corpuscular hemoglobin concentration (MCHC). The blood parameters showed no significant changes associated with the infestation. Water temperature was found to be negatively correlated with MCV and Hct, with values of rs= -0.52, p<0.0001 and rs= -0.48, p<0.0001, respectively. The mean Relative Condition Factor was Kn=1.01, indicating good health conditions of the fish in these lagoons. No correlation was found between the monogenean infestation and the blood parameters, or between the environmental factors and the monogeneans.
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Affiliation(s)
- Lincoln Lima Corrêa
- Departamento de Biologia Animal, Instituto de Biologia - IB, Universidade Estadual de Campinas - UNICAMP, CampinasSP, Brasil, Departamento de Biologia Animal, Instituto de Biologia - IB, Universidade Estadual de Campinas - UNICAMP, Campinas, SP, Brasil
| | - Letícia Cucolo Karling
- Laboratório de Ictioparasitologia, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura - NUPéLIA, Universidade Estadual de Maringá - UEM, MaringáPR, Brasil, Laboratório de Ictioparasitologia, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura - NUPéLIA, Universidade Estadual de Maringá - UEM, Maringá, PR, Brasil
| | - Ricardo Massato Takemoto
- Laboratório de Ictioparasitologia, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura - NUPéLIA, Universidade Estadual de Maringá - UEM, MaringáPR, Brasil, Laboratório de Ictioparasitologia, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura - NUPéLIA, Universidade Estadual de Maringá - UEM, Maringá, PR, Brasil
| | - Paulo Sérgio Ceccarelli
- Centro Nacional de Pesquisa e Conservação de Peixes Continentais - CEPTA, Instituto Chico Mendes de Conservação da Biodiversidade - ICMBio, PirassunungaSP, Brasil, Centro Nacional de Pesquisa e Conservação de Peixes Continentais - CEPTA, Instituto Chico Mendes de Conservação da Biodiversidade - ICMBio, Pirassununga, SP, Brasil
| | - Marlene Tiduko Ueta
- Departamento de Biologia Animal, Instituto de Biologia - IB, Universidade Estadual de Campinas - UNICAMP, CampinasSP, Brasil, Departamento de Biologia Animal, Instituto de Biologia - IB, Universidade Estadual de Campinas - UNICAMP, Campinas, SP, Brasil
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Müller MI, Adriano EA, Ceccarelli PS, da Silva MRM, Maia AA, Ueta MT. Prevalence, intensity, and phylogenetic analysis of Henneguya piaractus and Myxobolus cf. colossomatis from farmed Piaractus mesopotamicus in Brazil. Dis Aquat Organ 2013; 107:129-139. [PMID: 24334355 DOI: 10.3354/dao02668] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Henneguya piaractus and Myxobolus colossomatis (Myxosporea: Myxobolidae) are commonly found in the characid Piaractus mesopotamicus, an important fish farm species in Brazil. This paper describes the prevalence, mean intensity, molecular phylogeny, ultrastructure, and histology of H. piaractus and M. cf. colossomatis found infecting specimens of P. mesopotamicus collected from fish farms in the state of São Paulo, Brazil. A total of 278 fish were collected from 3 fish farms between February 2008 and July 2010. Parasite prevalence and mean intensity varied throughout the study period, and according to location and year. A phylogenetic tree, placing South American species in a global context, showed a clear tendency among myxosporean species to cluster according to host families. Ultrastructural analysis for M. cf. colossomatis showed the plasmodial wall with numerous projections toward host cells and phagocytic activity. Histopathological data showed hyperplasia caused by H. piaractus in highly infected fish. Histological and ultrastructural analysis of H. piaractus showed results similar to those that have previously been reported.
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Affiliation(s)
- Maria Isabel Müller
- Department of Animal Biology, Institute of Biology, Universidade Estadual de Campinas, Rua Monteiro Lobato, 255, CEP: 13083-862, Campinas, SP, Brazil
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10
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Rodrigues RM, Cardoso CR, Gonçalves ALR, Silva NM, Massa V, Alves R, Ueta MT, Silva JS, Costa-Cruz JM. Increased susceptibility to Strongyloides venezuelensis infection is related to the parasite load and absence of major histocompatibility complex (MHC) class II molecules. Exp Parasitol 2013; 135:580-6. [PMID: 24036323 DOI: 10.1016/j.exppara.2013.09.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Revised: 08/20/2013] [Accepted: 09/03/2013] [Indexed: 10/26/2022]
Abstract
In human and murine models strongyloidiasis induce a Th2 type response. In the current study we investigated the role of different loads of Strongyloides venezuelensis in the immune response raised against the parasite and the participation of the major histocompatibility complex (MHC) class II molecule in the disease outcome in face of the different parasite burden. The C57BL/6 wild type (WT) and MHC II(-/-) mice were individually inoculated by subcutaneous injection with 500 or 3000 S. venezuelensis L3. The MHC II(-/-) mice infected with 3000L3 were more susceptible to S. venezuelensis infection when compared with WT groups, in which the parasite was completely eliminated. The production of Th2 cytokines and specific IgG1 or IgE antibodies against parasite were significantly lowered in MHC II(-/-) infected mice with different larvae inoculums. The infection of MHC II(-/-) mice with S. venezuelensis induced slight inflammatory alterations in the small intestine, and these lesions were lower when compared with WT mice, irrespective of the parasite load utilized to infect animals. Finally, we concluded that MHC class II molecules are essential in the immune response against S. venezuelensis mainly when infection occurs with high parasite inoculum.
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Affiliation(s)
- Rosângela Maria Rodrigues
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Pará 1720, 38400-902 Uberlândia, MG, Brazil; Laboratório de Parasitologia, Universidade Federal de Goiás, Campus Jataí, GO, Brazil
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11
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Barboza DM, Zhang C, Santos NC, Silva MMBL, Rollemberg CVV, de Amorim FJR, Ueta MT, de Melo CM, de Almeida JAP, Jeraldo VDLS, de Jesus AR. Biomphalaria species distribution and its effect on human Schistosoma mansoni infection in an irrigated area used for rice cultivation in northeast Brazil. Geospat Health 2012; 6:S103-S109. [PMID: 23032275 DOI: 10.4081/gh.2012.128] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The role of irrigated areas for the spread of schistosomiasis is of worldwide concern. The aim of the present study was to investigate the spatial distribution of the intermediate snail host Biomphalaria in an area highly endemic for schistosomiasis due to Schistosoma mansoni, evaluating the relationship between irrigation and types of natural water sources on one hand, and the influence of place and time of water exposure on the intensity of human infection on the other. A geographical information system (GIS) was used to map the distribution of the intermediate snail hosts in Ilha das Flores, Sergipe, Brazil, combined with a clinical/epidemiological survey. We observed a direct correlation between the intensity of human infection with S. mansoni and irrigation projects. Malacological studies to identify snail species and infection rates showed that B. glabrata is the main species responsible for human schistosomiasis in the municipality, but that B. straminea also plays a role. Our results provide evidence for a competitive selection between the two snail species in rice fields with a predominance of B. glabrata in irrigation systems and B. straminea in natural water sources.
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Affiliation(s)
- Delmany Moitinho Barboza
- Laboratório de Biologia Molecular, Departamento de Medicina, Hospital Universitário, Universidade Federal de Sergipe, Rua Cláudio Batista, s/n, Hospital Universitário, 49.060-100, Aracaju, Sergipe, Brazil
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12
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Madi RR, Ueta MT, Frezza TF, Müller MI, Simionatto KB. Copépodos Notodiaptomus sp. Kiefer (Crustacea, Calanoida) naturalmente infectados com metacestódeos no reservatório do Juqueri, São Paulo, Brasil. Biota Neotrop 2011. [DOI: 10.1590/s1676-06032011000200018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Este trabalho teve o objetivo de identificar os componentes do zooplâncton que atuam como hospedeiros intermediários de cestódeos. Foram examinados 194 copépodos da subordem Calanoida, 317 copépodos da subordem Cyclopoida e 4240 cladóceros coletados no reservatório do Juqueri, Estado de São Paulo, entre janeiro e agosto de 2003. Apenas copépodos Calanoida do gênero Notodiaptomus sp. Kiefer encontravam-se positivos, sendo relatada duas formas morfológicas distintas de metacestódeos. Os metacestódeos, denominados Met 1 (Proteocephalidea) e Met 2 (Cyclophyllidea) apresentaram as seguintes prevalências e intensidades médias de infecção: Met 1 - 2,06% e 64 larvas/copépodo e Met 2 - 0,52% e uma larva/copépodo. Os copépodos positivos foram coletados na região litorânea do reservatório durante o dia, o que leva a crer que o parasitismo pode modificar o comportamento dos copépodos tornando-os mais acessíveis à predação.
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Tomaz Gonzaga H, da Silva Ribeiro V, Pereira Cunha-Júnior J, Tiduko Ueta M, Costa-Cruz JM. Usefulness of concanavalin-A non-binding fraction of Strongyloides venezuelensis larvae to detect IgG and IgA in human strongyloidiasis. Diagn Microbiol Infect Dis 2011; 70:78-84. [DOI: 10.1016/j.diagmicrobio.2011.01.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2010] [Revised: 01/27/2011] [Accepted: 01/31/2011] [Indexed: 10/18/2022]
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Feliciano ND, Gonzaga HT, Gonçalves-Pires MDRF, Gonçalves ALR, Rodrigues RM, Ueta MT, Costa-Cruz JM. Hydrophobic fractions from Strongyloides venezuelensis for use in the human immunodiagnosis of strongyloidiasis. Diagn Microbiol Infect Dis 2010; 67:153-61. [PMID: 20356696 DOI: 10.1016/j.diagmicrobio.2010.01.012] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2009] [Revised: 01/26/2010] [Accepted: 01/31/2010] [Indexed: 11/29/2022]
Abstract
The objective of the present research was to evaluate detergent and aqueous phases of total saline (TS) and alkaline extracts of Strongyloides venezuelensis for human strongyloidiasis immunodiagnosis. Total extracts and detergent and aqueous antigenic fractions were separated using Triton X-114 and were examined by enzyme-linked immunosorbent assay (ELISA) and immunoblotting (IB) tests to detect immunoglobulin G (IgG). Serum samples were obtained from 120 individuals: 40 strongyloidiasis patients (group I), 40 patients with other parasitic diseases (group II), and 40 apparently healthy individuals (group III). Each extract provided a different profile of antigenic components as recognized by IgG in IB. The detergent fraction of the TS extract demonstrated the highest sensitivity and specificity for ELISA and IB. The results indicated that the detergent saline fraction, purified from S. venezuelensis, furnished the most valid results for the strongyloidiasis immunodiagnosis and could be employed as an alternative antigen and as a useful source of specific polypeptides.
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Affiliation(s)
- Nágilla Daliane Feliciano
- Department of Immunology, Microbiology and Parasitology, Institute of Biomedical Sciences, Federal University of Uberlândia, 38400-902, Uberlândia, Minas Gerais, Brazil
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Gonçalves ALR, Rodrigues RM, Silva NM, Gonçalves FA, Cardoso CR, Beletti ME, Ueta MT, Silva JS, Costa-Cruz JM. Immunolocalization and pathological alterations following Strongyloides venezuelensis infection in the lungs and the intestine of MHC class I or II deficient mice. Vet Parasitol 2008; 158:319-28. [PMID: 18977600 DOI: 10.1016/j.vetpar.2008.09.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2007] [Revised: 09/04/2008] [Accepted: 09/08/2008] [Indexed: 11/15/2022]
Abstract
The present study, investigated the mechanisms involved in the immune responses of Major Histocompatibility Complex class I or class II knockout mice, following Strongyloides venezuelensis infection. Wild-type C57BL/6 (WT), MHC II(-/-) and MHC I(-/-) mice were individually inoculated with 3000 larvae (L3) of S. venezuelensis and sacrificed on days 1, 3, 5, 8, 13 and 21 post-infection (p.i.). Samples of blood, lungs and small intestines were collected. The tissue samples were stained with hematoxylin-eosin for the pathological analysis. The presence of the parasite was demonstrated by immunoperoxidase analysis. MHC II(-/-) mice presented a significantly higher number of adult worms recovered from the small intestine on day 5p.i. and presented elevated numbers of eggs in the feces. The infection by S. venezuelensis was completely eliminated 13 days after infection in WT as well as in MHC I(-/-) mice. In MHC II(-/-) mice, eggs and adult worms were still found on day 21 p.i., however, there was a significant reduction in their numbers. In the lung, the parasite was observed in MHC I(-/-) on day 1 p.i. and in MHC II(-/-) mice on days 1 and 5 p.i. In the small intestine of WT mice, a larger number of parasites were observed on day 8 p.i. and their absence was observed after day 13 p.i. Through immunohistochemistry analysis, the parasite was detected in the duodenum of WT on days 5 and 8 p.i., and in knockout mice on days 5, 8 and 13 p.i.; as well as in posterior portions of the small intestine in MHC I(-/-) and MHC II(-/-) on day 13 p.i., a finding which was not observed in WT mice. We concluded that immunohistochemistry analysis contributed to a more adequate understanding of the parasite localization in immunodeficient hosts and that the findings aid in the interpretation of immunopathogenesis in Strongyloides infection.
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MESH Headings
- Animals
- Genes, MHC Class I/genetics
- Genes, MHC Class II/genetics
- Intestinal Diseases, Parasitic/immunology
- Intestinal Diseases, Parasitic/parasitology
- Intestinal Diseases, Parasitic/pathology
- Intestines/pathology
- Lung/pathology
- Lung Diseases, Parasitic/immunology
- Lung Diseases, Parasitic/parasitology
- Lung Diseases, Parasitic/pathology
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Strongyloides
- Strongyloidiasis/immunology
- Strongyloidiasis/parasitology
- Strongyloidiasis/pathology
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Affiliation(s)
- A L R Gonçalves
- Laboratório de Parasitologia, Universidade Federal de Uberlândia, Av. Pará 1720, 38700-902 Uberlândia, Minas Gerais, Brazil
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Machado ER, Faccioli LH, Costa-Cruz JM, Lourenço EV, Roque-Barreira MC, Gonçalves-Pires MDRDF, Ueta MT. Strongyloides venezuelensis: The antigenic identity of eight strains for the immunodiagnosis of human strongyloidiasis. Exp Parasitol 2008; 119:7-14. [DOI: 10.1016/j.exppara.2007.12.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2007] [Revised: 11/07/2007] [Accepted: 12/10/2007] [Indexed: 11/25/2022]
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Thyssen PJ, Moretti TDC, Ueta MT, Ribeiro OB. [The role of insects (Blattodea, Diptera, and Hymenoptera) as possible mechanical vectors of helminths in the domiciliary and peridomiciliary environment]. CAD SAUDE PUBLICA 2004; 20:1096-102. [PMID: 15300303 DOI: 10.1590/s0102-311x2004000400025] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Helminths can be transmitted to human beings in several ways, but little attention has been given to vector or mechanical transmission of infective forms by insects. The present study surveys the helminth species present in three orders of insects that coexist in proximity with the human environment. A total of 700 insects (54 Blattodea, 275 Diptera, and 371 Hymenoptera) were collected and examined externally and individually. In the Blattodea order, only specimens of Periplaneta americana were collected, and 58.3% were carrying the following helminth forms: Oxyuridae eggs (36.4%), Ascaridae eggs (28.04%), Nematoda larvae (4.8%), Cestoda eggs (3.5%), other Nematoda (0.08%), and Toxocaridae eggs (0.08%). No Diptera and Hymenoptera were found to contain parasitic forms. This study evaluates the importance and role of insects as mechanical vectors of helminth parasites, correlated with social and environmental conditions, and suggests the use of these data for preventive purposes.
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Machado ER, Ueta MT, de Fátima Gonçalves-Pires MDR, Alves de Oliveira JB, Faccioli LH, Costa-Cruz JM. Strongyloides venezuelensis alkaline extract for the diagnosis of human strongyloidiasis by enzyme-linked immunosorbent assay. Mem Inst Oswaldo Cruz 2003; 98:849-51. [PMID: 14595467 DOI: 10.1590/s0074-02762003000600024] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The present study was conducted to detected IgG antibodies using Strongyloides venezuelensis alkaline extract for the diagnosis of human strongyloidiasis by the enzyme-linked immunosorbent assay (ELISA). Sera from 90 subjects were analyzed (30 with strongyloidiasis, 30 with other parasites and 30 healthy individuals). Results were expressed in antibody titers, which were considered as positive when titer was >80. Sensibility and specificity of the assay were 100% and 96.7%, respectively. It can be concluded that the heterologous alkaline extract could be employed in ELISA as a diagnostic aid in human strongyloidiasis, due to its advantages as easiness of obtaining, practicability in preparing, and high indexes of sensitivity and specificity.
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Affiliation(s)
- Eleuza Rodrigues Machado
- Departamento de Parasitologia, Instituto de Biologia, Universidade Estadual de Campinas, SP, Brasil
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Carvalho GAD, Andrade CFS, Ueta MT. Experimental infection of Aedes albopictus (Diptera: Culicidae) Larvae with the Xiphidiocercariae of a hematolechid. Mem Inst Oswaldo Cruz 2002; 97:573-8. [PMID: 12118294 DOI: 10.1590/s0074-02762002000400023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Aedes albopictus larvae were exposed, either individually or in groups, to different concentrations of xiphidiocercariae of Haematoloechus sp. for parasitological studies. It was observed the acute lethal effect and some aspects of the host-parasite relationship, such as delay or progress in the host life cycle, the number and location of the metacercariae in the host, adult host malformations and the amount of metacercariae required to cause death. A delay in the cycle and a high mortality rate was in general observed. Inside the larvae, the metacercariae were found predominantly in the thorax, abdominal segments and in the head, along with a reduced number in the anal lobe and cervix. It was shown that in addition to the quantity of metacercariae present, their location in the larvae was also relevant in the determination of mortality and anomalies. Malformed adults developed from larvae containing from one to three metacercariae.
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Affiliation(s)
- Gílcia Aparecida de Carvalho
- Departamento de Zoologia, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, 13084-971, Brasil
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Machado ER, Ueta MT, Gonçalves-Pires MDR, de Oliveira JB, Faccioli LH, Costa-Cruz JM. Diagnosis of human strongyloidiasis using particulate antigen of two strains of Strongyloides venezuelensis in indirect immunofluorescence antibody test. Exp Parasitol 2001; 99:52-5. [PMID: 11708834 DOI: 10.1006/expr.2001.4632] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- E R Machado
- Laboratory of Parasitology, Institute of Biology, State University of Campinas, SP, Brazil.
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de Carvalho GA, Ueta MT, de Andrade CF. [Search of natural occurrence of xiphidiocercariae (trematoda) in fresh water snails of nine countries from São Paulo State, Brazil]. Bol Chil Parasitol 2001; 56:3-9. [PMID: 12058671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
Xiphidiocercariae, aquatic larval stages of some trematodes are considered a potential instrument for biological control of mosquitoes. In this study we evaluated its natural occurrence in Campinas region and two places in Vale do Ribeira (Registro and Miracatu), São Paulo State. Snails were obtained from fresh water collections from September 1996 to February 1999. The species collected were Lymnaea columella, Physa marmorata, Biomphalaria tenagophila, Biomphalaria sp., Drepanotrema cimex, D. lucidum and Drepanotrema sp. Fasciola hepatica, xiphidiocercariae (Haematoloechidae) and echinostomatid cercariae were detected in the lymnaeids snails from Miracatu, SP. In the same locality were found planorbids snails parasitized by furcocercariae, echinostomatid cercariae and xiphidiocercariae. The xiphidiocercariae found in the planorbids were different from those obtained from lymnaeids. One Biomphalaria sp. infected with furcocercariae was found in Louveira, SP. In the ROSA place (Campinas, SP) an individual of Biomphalaria sp. and one of L. columella were found infected by the furcocercariae and echinostomatid cercariae, respectively. In the place UNI-I, in Campinas, one L. columella was infected by furcocercariae. Double infection in snails from Miracatu was also observed.
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Affiliation(s)
- G A de Carvalho
- Departamento de Zoología, Instituto de Biología, Universidade Estadual de Campinas (UNICAMP), CP 6109, CEP 13084-971, Campinas, SP, Brasil
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Ueta MT, Avancini RM. Studies on the influence of age in the infection of caged chickens by Raillietina laticanalis and on the susceptibility to reinfection. Vet Parasitol 1994; 52:157-62. [PMID: 8030182 DOI: 10.1016/0304-4017(94)90046-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The aim of the experiments was to explain the high number of worms found in chickens from a poultry facility. Infections by Raillietina laticanalis were achieved in chickens kept in the laboratory. Thirty cysticercoids obtained from beetles (Dermestes ater) caught at the poultry facility were administered by pipette to each chicken. The rate of recovered worms was employed to evaluate the persistence of the infection, the influence of bird age on susceptibility to infection, and the possibility of reinfection. To verify the persistence of the infection, a group of ten chickens was infected. At each of five different intervals, two chickens were necropsied. Tapeworms were recovered up to the 46th day. To verify the influence of bird age on susceptibility to infection, three different age groups were used in the experimental design: 3-4 weeks, 6-9 weeks, and 17-20 weeks. There was no difference in susceptibility to the infections across the groups. To investigate the possibility of reinfection, a group of birds received an additional dose of cysticercoids a few days after the first doses. Another group received the second dose only after the worms had already been established. There was a significant increase in the number of recovered worms in both groups when compared with the control. The short worms found in some experiments may be due to natural destrobilization. Thus, the high number of worms found in chickens from the poultry facility could result from both infections being acquired earlier and infections acquired at the laying stage, since we demonstrated the possibility of reinfection and the long lifespan of the worm.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- M T Ueta
- Department of Parasitology, Institute of Biology, UNICAMP, Campinas (SP), Brazil
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Dias LC, Ueta MT, Guaraldo AM. [Susceptibility of Biomphalaria glabrata, B. straminea and B. tenagophila to various strains of Schistosoma mansoni]. Rev Inst Med Trop Sao Paulo 1987; 29:205-12. [PMID: 3130655 DOI: 10.1590/s0036-46651987000400004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Em condições experimentais foi estudada a suscetibilidade de Biomphalaria glabrata, B. straminea e B. tenagophila a quatro linhagens humanas (MAP, PTH, UPH, e OuH) e duas de roedores silvestres (PTR e VPR) do Schistosoma mansoni. Grupos de 50 moluscos foram expostos individualmente a 10 miracídios e observados durante 70 dias. Avaliou-se a suscetibilidade dos moluscos ao parasito por meio da % de animais com esporocistos, % de moluscos que eliminavam cercárias e mortalidade conjunta dos animais expostos e infectados. Exemplares de B. glabrata mineira infectaram-se com cepa simpátrica (MAP) e com 5 alopátricas do Estado de São Paulo (PTH, VPH, OuH, PTR e VPR). B. glabrata paulista mostrou altas taxas de infecção com as cepas MAP, VPR e OuH do trematódeo. Quatro % dos exemplares B. straminea de São Paulo eliminavam cercárias de cepas simpátricas; com cepa mineira apenas 4% apresentaram esporocistos na vigência de 20 miracídios por molusco; as menores taxas de mortalidade foram registradas com essa espécie de molusco, não sendo maior do que 20%. B. tenagophila paulista foi suscetível apenas às linhagens simpáticas sendo 6% a maior taxa de moluscos que eliminaram cercárias. Os resultados indicam que os movimentos populacionais humanos dentro do território paulista e para fora dele são importantes na disseminação da esquistossomose mansônica.
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Ueta MT, Deberaldini ER, Cordeiro NS, Artigas PT. [Biological cycle of Paraibatrema inesperata n.g.,n. sp. (Trematoda, Paramphistomidae) beginning with metacercariae developing Biomphalaria tenagophila (D'Orbigny, 1835) (Mollusca, Planorbidae)]. Mem Inst Oswaldo Cruz 1981; 76:15-21. [PMID: 7348766 DOI: 10.1590/s0074-02761981000100002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Em exemplares de B. tenagophila, capturados em ambiente natural, foram encontradas paranfistomocercárias de precoce encistamento. Procedeu-se à infecção, per os, de animais de biotério; em camundongos e ratos, verificou-se o desenvolviemnto de trematóide paranfistomídeo desconhecido e que, por suas características, não se enquadra nos g~eneros conhecidos de Paramphistomidae de mamíferos. Para o parasito em apreço é proposta a denominação Paraibatema inesperata n.g, n.sp.. A partir de miracídios, oriundos de ovos eliminados pelos roedores em experiência, procurou-se infectar B. tenagophila e B. glabrata, criadas no moluscário. Verificou-se ser ativa a penetração dos miracídios no tecido do molusco, sendo freqüente a formação de tumorações nas antenas. A evolução experimental no hospedeiro intermediário apresenta-se lenta; ao fim de 40 dias de pós-infecção, não se observou a formação de esporocistos, rédias e cercárias.
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Ueta MT. [Occurrence of natural infection of Fasciola hepatica Linnaeus, 1758 in Lymnaea columella Say, 1817 in the Paraiba River Valley, Brazil]. Rev Saude Publica 1980; 14:230-3. [PMID: 7221470 DOI: 10.1590/s0034-89101980000200010] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Foram registradas em Piquete, no vale do rio Paraíba do Sul (SP), Brasil, taxas de 1,22% e 0,14% de infecção natural em Lymnaea columella, por Fasciola hepatica. Em um único exemplar de Lymnaea columella dentre os 1.052 examinados, foram observadas rédias com xifidiocercárias, rédias com cercárias de Fasciola hepatica e metacercárias de Echinostomatidae.
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Abstract
Os ovos de F. hepatica recolhidos em bilis de boi, fezes e em bilis de coelhos foram incubados a temperatura ambiente, dando origem a miracídios após 9 a 13 dias. Com estes miracídios recém-eclodidos foram infectados experimentalmente 233 exemplares de L. columella medindo 5,0 a 11,0 mm de comprimento. Das limneas infectadas apenas 3% sobreviveram até o desenvolvimento completo das cercarías. Houve formação de 190 a 1150 metacercárias entre o 46° ao 54° dia de infecção. Vários camundongos, ratos, cobaias e coelhos foram infectados com metacercárias de diferentes idades, mas somente os coelhos eliminaram ovos nas fezes 78 dias depois. Com a morte dos coelhos foram recuperados vermes adultos.
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Ueta MT. [Various aspects of the biology of Lymnaea columella Say, 1817 (Gastropoda, Pulmonata)]. Rev Saude Publica 1976; 10:355-66. [PMID: 1035434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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Abstract
Foram estudados aspectos da biologia da Lymnaea columella Say, 1817, em condições de laboratório e determinadas as variações da duração do período embrionário em relação à temperatura da água.
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