137 research outputs found

    Assessment of the experimental infection by Echinostoma paraensei (Lie & Basch, 1967) (Trematoda: Echinostomatidae) in two Biomphalaria tenagophila (D’Orbigny, 1835) (Gastropoda: Planorbidae) isolates resistant and susceptible to Schistosoma mansoni (Sambon, 1907) (Trematoda: Schistosomatidae)

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    Different isolates of Biomphalaria tenagophila show a large spectrum of compatibility to the trematode Schistosoma mansoni, ranging from entirely refractory to highly susceptible. The aim of this study was to verify the pattern of compatibility of two B. tenagophila geographical isolates, resistant and susceptible to S. mansoni, when infected with Echinostoma paraensei. The snails were exposed to different numbers of miracidia, and mortality, histopathological characteristics and the number of cercariae released were evaluated. A correlation between the number of miracidia and the infectivity rate of B. tenagophila (TAIM) was observed. There was no correlation between the number of miracidia used and the number of cercariae released for both B. tenagophila isolates. Biomphalaria tenagophila (SJC) showed little susceptibility to the E. paraensei infection. The results demonstrate different degrees of compatibility for the two B. tenagophila isolates when infected with E. paraensei, and may contribute to studies about host-parasite relationships

    A criação do conhecimento na universidade

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    Submitted by Ana Maria Fiscina Sampaio ([email protected]) on 2019-06-28T16:02:39Z No. of bitstreams: 1 Andrade. Z. A criação ...Anais. Med. 2003.pdf: 5833400 bytes, checksum: ecb573adab4a7635e06e5abfe19f9d75 (MD5)Approved for entry into archive by Ana Maria Fiscina Sampaio ([email protected]) on 2019-06-28T16:11:35Z (GMT) No. of bitstreams: 1 Andrade. Z. A criação ...Anais. Med. 2003.pdf: 5833400 bytes, checksum: ecb573adab4a7635e06e5abfe19f9d75 (MD5)Made available in DSpace on 2019-06-28T16:11:35Z (GMT). No. of bitstreams: 1 Andrade. Z. A criação ...Anais. Med. 2003.pdf: 5833400 bytes, checksum: ecb573adab4a7635e06e5abfe19f9d75 (MD5) Previous issue date: 2003Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil

    Extracellular matrix and schistosomiasis.

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    Submitted by Ana Maria Fiscina Sampaio ([email protected]) on 2012-10-22T21:06:09Z No. of bitstreams: 1 Andrade ZA Extracellular matrix and schistosomiasis.....pdf: 840145 bytes, checksum: b98641d787088e166ef5ecafc9aeee7b (MD5)Made available in DSpace on 2012-10-22T21:06:09Z (GMT). No. of bitstreams: 1 Andrade ZA Extracellular matrix and schistosomiasis.....pdf: 840145 bytes, checksum: b98641d787088e166ef5ecafc9aeee7b (MD5) Previous issue date: 1991Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasi

    Schistosomiasis and liver fibrosis

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    Submitted by Martha Silveira Berbert ([email protected]) on 2011-04-06T15:32:40Z No. of bitstreams: 1 Schistosomiasis and liver fibrosis.pdf: 438380 bytes, checksum: ce435588570007f540d1784bdba732a9 (MD5)Made available in DSpace on 2011-04-06T15:32:40Z (GMT). No. of bitstreams: 1 Schistosomiasis and liver fibrosis.pdf: 438380 bytes, checksum: ce435588570007f540d1784bdba732a9 (MD5) Previous issue date: 2009-08-04Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, BrasilSchistosoma mansoni infection invariably results in liver fibrosis of the host. This fibrosis may be represented by small focal areas of chronic inflammation and excess extracellular matrix deposited in periovular granulomas, distributed in variable numbers at the periphery of the portal vein system. This is the outcome of 90% of the infected population in endemic areas. Conversely, a minority of infected individuals develop extensive disease with numerous granulomas along the entire extension of the portal spaces. This latter situation is mainly dependent on special hemodynamic changes created by a heavy worm load, with the subsequent production of numerous eggs and represents a severe form of a peculiar chronic hepatopathy. Thus, host-parasite interactions in schistosomiasis help us to understand a number of important features of liver fibrosis: its initiation and regulation, the significance of accompanying vascular changes, the dynamics of fibrosis formation and regression with antiparasitic treatment; host genetic and immunological contributions, and the pathophysiology of portal hypertension

    A double and paradoxical role for angiogenesis

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    Submitted by Ana Maria Fiscina Sampaio ([email protected]) on 2016-06-27T18:25:34Z No. of bitstreams: 1 Andrade ZA A double....pdf: 162154 bytes, checksum: 80386fce39186d469012af61c6e3dd20 (MD5)Approved for entry into archive by Ana Maria Fiscina Sampaio ([email protected]) on 2016-06-27T18:32:11Z (GMT) No. of bitstreams: 1 Andrade ZA A double....pdf: 162154 bytes, checksum: 80386fce39186d469012af61c6e3dd20 (MD5)Made available in DSpace on 2016-06-27T18:32:11Z (GMT). No. of bitstreams: 1 Andrade ZA A double....pdf: 162154 bytes, checksum: 80386fce39186d469012af61c6e3dd20 (MD5) Previous issue date: 2013Made available in DSpace on 2016-07-07T11:39:44Z (GMT). No. of bitstreams: 3 Andrade ZA A double....pdf.txt: 18580 bytes, checksum: 6a7566c693e1efbc6af6f8a1ecd2b389 (MD5) Andrade ZA A double....pdf: 162154 bytes, checksum: 80386fce39186d469012af61c6e3dd20 (MD5) license.txt: 2991 bytes, checksum: 5a560609d32a3863062d77ff32785d58 (MD5) Previous issue date: 2013Fundação Gonçalo Moniz, Centro de Pesquisas Gonçalo Moniz. Laboratório de Patologia Experimental. Salvador, BA, BrasilFibrogênese e fibrólise são características constantes e importantes que ocorrem durante a patologia da esquistossomose. Novos achados têm indicado que o tecido de granulação (angiogênese) é uma característica dominante em ambas as ocasiões. Este artigo de revisão discute este papel, aparentemente paradoxal, desempenhado pela angiogênese (tecido de granulação), durante a patologia da esquistossomose.Fibrogenesis and fibrolysis are constant and important features occurring during the pathology of schistosomiasis. New findings have recently indicated that granulation tissue (angiogenesis) is a dominating feature on both occasions. This review article discusses this apparently paradoxical feature displayed by angiogenesis (granulation tissue) during the pathology of schistosomiasi
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