Base de dados : LILACS
Pesquisa : Z01.756.342 [Categoria DeCS]
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Id: biblio-1057969
Autor: Al Quraishy, Saleh; Abdel-Gaber, Rewaida; Dkhil, Mohamed Abdel Monem.
Título: First record of Pseudoterranova decipiens (Nematoda, Anisakidae) infecting the Red spot emperor Lethrinus lentjan in the Red Sea / Primeiro registro de Pseudoterranova decipiens (Nematoda, Anisakidae) infectando o imperador da mancha vermelha Lethrinus lentjan no Mar Vermelho
Fonte: Rev. bras. parasitol. vet;28(4):625-631, Oct.-Dec. 2019. graf.
Idioma: en.
Resumo: Abstract The current parasitological study was carried out to investigate helminth parasites infecting the Red spot emperor Lethrinus lentjan inhabiting Hurghada City at the Gulf of Suez, Red Sea, Egypt. Third-stage larvae of nematode parasite was isolated from the intestine as well as body cavity of the examined fish. Light and scanning electron microscopy revealed that this parasite belonged to Anisakidae family within the genus Pseudoterranova. The present species is named Pseudoterranova decipiens based on the presence of triangular mouth aperture with prominent boring teeth and soft swellings of the cuticle, long muscular esophagus, ventrally excretory pore, and narrow transverse slit of anal opening followed by a short mucron. The morphological characteristics of this species were confirmed by molecular analysis of 18S rDNA gene region of the present parasite. It demonstrated a close identity ≥89% with taxa under family Anisakidae, 85% with Raphidascarididae, and 79-84% with Toxocaridae. A preliminary genetic comparison between gene sequence of the present parasite and other oxyurid species placeed it as a putative sister taxon to other Pseudoterranova decipiens described previously. This study demonstrated that the 18S rDNA gene region of Pseudoterranova decipiens yielded a unique sequence that confirmed its taxonomic position in Anisakidae.

Resumo O presente estudo parasitológico foi realizado para investigar os helmintos parasitos que infectam o peixe imperador Lethrinus lentjan, que habita a cidade de Hurghada no Golfo de Suez, Mar Vermelho, no Egito. Larvas de terceiro estágio de parasitos nematoides foram isoladas do intestino e da cavidade do corpo do peixe examinado. Microscopia eletrônica de luz e de varredura revelou que este parasita pertence à família Anisakidae dentro do gênero Pseudoterranova. A espécie atual é denominada Pseudoterranova decipiens baseada na presença de abertura triangular da boca com dentes proeminentes chatos e inchaços moles da cutícula, esôfago muscular longo, poro ventralmente excretor e fenda transversal estreita da abertura anal seguida por um mucron curto. As características morfológicas desta espécie foram confirmadas pela análise molecular da região do gene 18S rDNA do presente parasito. Demonstrou uma identidade próxima ≥89% com taxa sob família Anisakidae, 85% com Raphidascarididae, e 79-84% com Toxocaridae. Uma comparação genética preliminar entre a sequência genética do presente parasito e outras espécies de oxiurídeos coloca-o como um taxon irmão putativo para outros Pseudoterranova descritos anteriormente. Este estudo demonstra que a região do gene 18S rDNA de Pseudoterranova decipiens produz uma sequência única que confirma sua posição taxonômica em Anisakidae.
Descritores: Doenças dos Peixes/parasitologia
Peixes/parasitologia
Nematoides/isolamento & purificação
-Filogenia
DNA Ribossômico/genética
RNA Ribossômico 18S/genética
Microscopia Eletrônica de Varredura
Oceano Índico
Egito
Peixes/classificação
Nematoides/classificação
Nematoides/genética
Nematoides/ultraestrutura
Limites: Animais
Responsável: BR1.1 - BIREME


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Id: biblio-1001564
Autor: Moni, Sivakumar Sivagurunathan; Alam, Mohammad Firoz; Safhi, M M; Jabeen, Aamena; Sanobar, Syeda; Siddiqui, Rahimullah; Moochikkal, Remesh.
Título: Potency of nano-antibacterial formulation from Sargassum binderi against selected human pathogenic bacteria
Fonte: Braz. J. Pharm. Sci. (Online);54(4):e17811, 2018. tab, graf, ilus.
Idioma: en.
Resumo: Seaweeds constitutes an abundant marine reserve that can be harnessed as source of new pharmaceutical agents. Sargassum binderi Sonder ex J. Agardh is a brown seaweed that is predominantly available from December to March in the Red Sea, Jazan, Kingdom of Saudi Arabia (KSA). In this study, three extracts were isolated using three different techniques, and were subjected to antibacterial assay. The petroleum ether extract of Sargassum binderi was more effective against selected human pathogenic bacteria than the other extracts. Therefore, further studies were focused on developing oleic acid vesicles entrapped with the petroleum ether extract of Sargassum binderi, with the aim of enhancing its penetration property. Oleic acid vesicles were prepared by entrapping petroleum ether extract of Sargassum binderi using film hydration technique. The formulated vesicles were in nanoscale, and so were termed phyto-nanovesicles (PNVs). The spectrum of antibacterial activity of PNVs showed that it is a promising formulation against S. aureus, S. pyogenes, B. subtilis, E. coli, K. pneumoniae and P. aeruginosa. The microbial sensitivities to the PNVs was in the order E.coli > B. subtilis > S. aureus > S. pyogenes > K. pneumoniae > P. aeruginosa. Thus, the PNV formulation possesses promising and effective antimicrobial potential against human pathogenic bacteria
Descritores: Oceano Índico/etnologia
Sargassum/metabolismo
-Alga Marinha/classificação
Antibacterianos
Responsável: BR40.1 - DBD - Divisão de Biblioteca e Documentacão do Conjunto das Químicas


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Id: lil-556809
Autor: Bergue, Cristianini T; Govindan, Abiraman.
Título: Eocene-Pliocene deep sea ostracodes from ODP site 744A, Southern Indian Ocean
Fonte: An. acad. bras. ciênc;82(3):747-760, Sept. 2010. ilus, mapas, tab.
Idioma: en.
Resumo: The Eocene-Pliocene deep sea ostracodes from the ODP site 744A (Kerguelen Plateau) are herein studied under the taxonomic and paleoecologic aspects. 28 species are identified, being the genera Krithe, Cytherella and Dutoitella the most diversified. A faunal threshold was recorded in the Early Oligocene, which is tentatively explained under the knowledge of the paleoceanographical studies carried out not only in the Kerguelen Plateau but also in adjacent areas. The faunal turnover and variations in both richness and abundance possibly reflect the inception of psychrosphere and the influence of hydrological changes in the preservation of carapaces. Moreover, the influence of those changes on carbonate preservation is discussed as the cause of faunal impoverishment in the upper portion of the core.

Ostracodes do intervalo Eoceno-Plioceno do sítio 744A do ODP (Platô Kerguelen) são aqui estudados sob o aspecto taxonômico e paleoecológico. 28 espécies são identificadas, sendo os gêneros Krithe, Cytherella e Dutoitella os mais diversificados. Uma transição faunística registrada no Eoligoceno é investigada com base em estudos paleoceanográficos realizados no Platô Kerguelen e em áreas adjacentes. A transição e as variações de riqueza e abundância possivelmente refletem o estabelecimento da psicrosfera e mudanças hidrológicas associadas, na composição da fauna. Além disso, a influência destas mudanças na preservação do carbonato é discutida comopossível causa do empobrecimento da fauna na porção superior do testemunho.
Descritores: Biodiversidade
Crustáceos/classificação
-Oceano Índico
Paleontologia
Filogeografia
Densidade Demográfica
Limites: Animais
Responsável: BR1.1 - BIREME


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Id: lil-523732
Autor: Vazeille, Marie; Mousson, Laurence; Failloux, Anna-Bella.
Título: Failure to demonstrate experimental vertical transmission of the epidemic strain of Chikungunya virus in Aedes albopictus from La Réunion Island, Indian Ocean
Fonte: Mem. Inst. Oswaldo Cruz;104(4):632-635, July 2009. tab.
Idioma: en.
Projeto: Institut Pasteur. Agence Nationale pour la Recherche. ANR EntomoChik.
Resumo: Aedes albopictus was responsible for transmission in the first outbreak of chikungunya (CHIK) on La Réunion Island, Indian Ocean, in 2005-2006. The magnitude of the outbreak on this island, which had been free of arboviral diseases for over 30 years, as well as the efficiency of Ae. albopictus as the main vector, raises questions about the maintenance of the CHIK virus (CHIKV) through vertical transmission mechanisms. Few specimens collected from the field as larvae were found to be infected. In this study, Ae. albopictus originating from La Réunion were orally infected with a blood-meal containing 10(8) pfu/mL of the CHIKV epidemic strain (CHIKV 06.21). Eggs from the first and second gonotrophic cycles were collected and raised to the adult stage. The infectious status of the progeny was checked (i) by immunofluorescence on head squashes of individual mosquitoes to detect the presence of viral particles or (ii) by quantitative RT-PCR on mosquito pools to detect viral RNA. We analysed a total of 1,675 specimens from the first gonotrophic cycle and 1,709 from the second gonotrophic cycle without detecting any viral particles or viral RNA. These laboratory results are compared to field records.
Descritores: Aedes/virologia
Vírus Chikungunya/patogenicidade
Insetos Vetores/virologia
-Infecções por Alphavirus/transmissão
Vírus Chikungunya/fisiologia
Imunofluorescência
Oceano Índico
Transmissão Vertical de Doença Infecciosa
Reação em Cadeia da Polimerase Via Transcriptase Reversa
RNA Viral/análise
Limites: Animais
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME


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Id: lil-517008
Autor: Razanamparany, Voahangy Rasolofo; Ramarokoto, Herimanana H; Vololonirina, Elie J; Rasolonavalona, Tiana; Michault, Alain; Pyndiah, Naidu; Seenundun, Rajbunsing; Sandven, Per; Chanteau, Suzanne.
Título: RFLP clusters of Mycobacterium tuberculosis strains from the Indian Ocean Region: local and South Asian characteristics
Fonte: Mem. Inst. Oswaldo Cruz;104(3):441-443, May 2009. ilus, graf.
Idioma: en.
Projeto: French Cooperation; . Raoul Follereau Foundation.
Resumo: This is the first study describing the genetic polymorphism of Mycobacterium tuberculosis strains in the Indian Ocean Region. Using IS6110 RFLP analysis, 475 M. tuberculosis isolates from Madagascar, Comoros, Mauritius, Mozambique and La Reunion were compared. Of the 332 IS6110 profiles found, 43 were shared by clusters containing 2-65 strains. Six clusters were common to at least two countries. Of 52 families of strains with similar IS6110 profiles, 10 were common to at least two countries. Interestingly, another characteristic was the frequency (16.8 percent) of IS6110 single-copy strains. These strains could be distinguished using the DR marker. This preliminary evaluation suggests genetic similarity between the strains of the Indian Ocean Region. However, additional markers would be useful for epidemiological studies and to assess the ancient transmission of strains between countries of this region.
Descritores: Mycobacterium tuberculosis/genética
Polimorfismo Genético/genética
-Ásia
Análise por Conglomerados
Impressões Digitais de DNA
DNA Bacteriano/genética
Oceano Índico
Polimorfismo de Fragmento de Restrição
Tipo de Publ: Estudo Comparativo
Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME



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