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PMID:28534208
Autor:McAllister CT; Seville RS
Endereço:Science and Mathematics Division, Eastern Oklahoma State College, Idabel, OK, 74745, USA. cmcallister@se.edu.
Título:A new eimerian (Apicomplexa: Eimeriidae) from southern short-tailed shrews, Blarina carolinensis (Bachman) (Soricimorpha: Soricidae: Soricinae) from southeastern Oklahoma, USA.
Fonte:Syst Parasitol; 94(6):711-716, 2017 Jul.
ISSN:1573-5192
País de publicação:Netherlands
Idioma:eng
Resumo:A new species of Eimeria Schneider, 1875 (Apicomplexa: Eimeriidae) is described from faecal samples of two of three southern short-tailed shrews, Blarina carolinensis (Bachman) (Soricidae) from southeastern Oklahoma, USA. Oöcysts of Eimeria tkachi n. sp. are subspheroidal to ovoidal with a rough-pitted, tan colored, bi-layered wall, measure 16.5 × 15.2 µm, and have a length/width (L/W) ratio of 1.1; both micropyle and oöcyst residuum are absent, but polar granule(s) are present. Sporocysts are ovoidal, 9.5 × 6.5 µm, L/W 1.4; a distinct button-like Stieda body is present, but the sub-Stieda and para-Stieda bodies are absent and the sporocyst residuum is composed of large globules distributed throughout the sporocyst. Sporozoites have a spheroidal anterior refractile body, a subspheroidal posterior refractile body, and one centrally-located nucleus. This is the smallest eimerian described thus far from the Soricidae, the initial description of a coccidian from B. carolinensis, and the first from any shrew from Oklahoma.
Tipo de publicação: JOURNAL ARTICLE


  2 / 74 MEDLINE  
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PMID:28425037
Autor:de Santana Miglionico MT; Viana LA
Endereço:Programa de Pós-Graduação em Biodiversidade e Saúde, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil 4365, Rio de Janeiro, RJ, 21040-360, Brazil.
Título:A new species of Caryospora Léger, 1904 (Apicomplexa: Eimeriidae) from the Guanabara spotted night snake Siphlophis pulcher (Raddi) (Reptilia: Dipsadidae) in the Atlantic Forest, Brazil.
Fonte:Syst Parasitol; 94(5):621-625, 2017 Jun.
ISSN:1573-5192
País de publicação:Netherlands
Idioma:eng
Resumo:A new coccidian species of the genus Caryospora Léger, 1904 (Apicomplexa, Eimeriidae) is described based on material from the Guanabara spotted night snake Siphlophis pulcher (Raddi) (Reptilia: Dipsadidae) in a coastal area of the Atlantic Forest in Ilha Grande Island, state of Rio de Janeiro, southeastern Brazil. Caryospora ceadsensis n. sp. possesses spheroidal to slightly subspheroidal oöcysts measuring 17-24 × 17-24 (22.1 × 22.0) µm, with a c.1.3 µm thick bi-layered wall (inner layer smooth, outer layer slightly striated), length/width (L/W) ratio of 1.0-1.1 (1.0) and a highly refractive polar granule. Sporocysts are ellipsoidal, 11-17 × 10-13 (14.7 × 11.2) µm, with a L/W ratio of 1.0-1.5 (1.3), with a nipple-like Stieda body (1.1 µm high and 2.9 µm wide) and a large, bubble-shaped sub-Stieda body 1.7 µm high and 3.8 µm wide (1.0-2.0 × 3.0-4.5 µm). Sporocyst residuum composed of granules of differing sizes. Sporozoites with striations. This is the sixth record of a species of Caryospora in snakes of the family Dipsadidae in Brazil.
Tipo de publicação: JOURNAL ARTICLE


  3 / 74 MEDLINE  
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PMID:27515371
Autor:Schuster RK; Woo PC; Poon RW; Lau SK; Sivakumar S; Kinne J
Endereço:Central Veterinary Research Laboratory, PO Box 957, Dubai, United Arab Emirates. moniezia@zedat.fu-berlin.de.
Título:Chlamydotis macqueenii and C. undulata (Aves: Otididae) are new hosts for Caryospora megafalconis (Apicomplexa: Eimeriidae) and proposal of the genus Avispora gen. nov.
Fonte:Parasitol Res; 115(11):4389-4395, 2016 Nov.
ISSN:1432-1955
País de publicação:Germany
Idioma:eng
Resumo:Oocysts of a coccidian morphologically matching features of Caryospora megafalconis Klüh, 1994 were found in fecal samples and contents of the large intestines in five wild caught Clamydotis macqueenii (Gray) and 19 captive bred C. undulata (Jaquin). Scrapings of the intestinal mucosa of necropsied birds revealed macrogamonts and unsporulated oocysts. Sporulation in a potassium dichromate solution at 26 °C was completed in 48 h. Intestinal contents and sporulated oocysts obtained from feces of infected bustards as well as sporulated oocysts of C. megafalconis and C. neofalconis Böer, 1982 from two Falco rusticolis Linnaeus and one F. peregrinus Tunstall were used for DNA sequencing of the cox1, 18S ribosomal ribonucleic acid (rRNA), and 28S rRNA genes. The phylogenetic trees for all three genes showed that sequences of the material from bustards were identical with C. megafalconis from falcons. C. neofalconis and C. daceloe Yang et al., 2014 were situated in the neighboring clades. Contrary to this, subsequent sequences of C. bigenetica Wacha and Christiansen, 1982 from rattlesakes are at a distinct distance suggesting that despite morphological similarities of the oocysts, there are differences between Caryospora species of birds and reptiles. For this reason, it might be reasonable to transfer avian Caryospora species into a new genus Avispora.
Tipo de publicação: JOURNAL ARTICLE
Nome de substância:0 (RNA, Ribosomal, 18S); 0 (RNA, Ribosomal, 28S)


  4 / 74 MEDLINE  
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PMID:26857128
Autor:Abdel-Haleem HM; Al-Quraishy S; Abdel-Baki AA
Endereço:Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt.
Título:Redescription and new locality record of Choleoeimeria turcicus from the gallbladder of Hemidactylus turcicus in Egypt, with notes on its endogenous development.
Fonte:Parasitol Res; 115(5):2017-21, 2016 May.
ISSN:1432-1955
País de publicação:Germany
Idioma:eng
Resumo:Upton et al. J Protozool 35:24-25, 1988 originally described Eimeria turcicus from the gallbladder of the Mediterranean gecko, Hemidactylus turcicus, in the USA. Shortly after establishing the genus Choleoeimeria, Paperna and Landsberg S Afr J Zool 24:345-355, 1989 transferred E. turcicus to this genus, renaming it as Choleoeimeria turcicus. This paper reports the findings of a survey of coccidian parasites of lizards in Egypt, during which tetrasporocystic oocysts were reported from the gallbladder of H. turcicus. Based on the oocysts' morphological and morphometric characteristics and the same host, it can be deduced for the first time that the present species is conspecific with E. turcicus. In the present study, the gallbladder was the sole site for the endogenous development and no endogenous stages were noticed in the intestine. The endogenous stages induce hypertrophy and displacement of the infected cells from the original biliary epithelium to form a prolonged and branching outgrowth. We therefore followed Paperna and Landsberg S Afr J Zool 24:345-355, 1989 and considered the biliary coccidium recorded in this study to be a member of the genus Choleoeimeria. This represents a new locality record for C. turcicus, which was previously known in the USA and Israel.
Tipo de publicação: JOURNAL ARTICLE


  5 / 74 MEDLINE  
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PMID:26654121
Autor:Debenham JJ; Cools F; Midtgaard F; Robertson LJ
Endereço:Department of Companion Animal Clinical Sciences, Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Post Box 8146, Dep, 0033, Oslo, Norway.
Título:Five Species of Coccidia (Apicomplexa: Eimeriidae), Including Four New Species, Identified in the Feces of Blue Wildebeest (Connochaetes taurinus) in Mikumi National Park, Tanzania.
Fonte:J Parasitol; 102(2):233-8, 2016 04.
ISSN:1937-2345
País de publicação:United States
Idioma:eng
Resumo:During October 2013, 112 fecal samples were collected from wild blue wildebeest ( Connochaetes taurinus ) in Mikumi National Park, Tanzania, and examined for coccidians. Coccidia were present in 46% of samples, with wildebeest shedding 60 to 18,000 oocysts per gram feces (median, 300; mean, 1,236). Five species, including 4 new species, were identified. Oocysts of Eimeria gorgonis from 18% of samples were ellipsoidal, 23 × 18.4 µm, with a length/width (L/W) ratio of 1.3, oocyst wall 1-1.5 µm thick. Micropyle, oocyst residuum, and polar granule absent. Oocysts of Eimeria donaldi n. sp. from 34% of samples were spherical to oblong, 13.4 × 12.3 µm, L/W ratio 1.1, oocyst wall 1 µm thick. Micropyle, oocyst residuum, and polar granule absent. Oocysts of Eimeria nyumbu n. sp. were ellipsoidal, 30.8 × 22.1 µm, L/W 1.4, oocyst wall 2 µm thick. Large micropyle present, oocyst residuum and polar granule absent. Oocysts of Eimeria burchelli n. sp. in 16% of samples were 34.8 × 24.4 µm, L/W 1.4, oocyst wall 2-2.5 µm thick, with a brown, lightly stippled outer layer. Micropyle present, oocyst residuum and polar granule absent. Oocysts of Eimeria sokoine n. sp. in 5% of samples were 45.8 × 29 µm, L/W 1.6, oocyst wall 3-4 µm thick with a dark brown, very rough, stippled outer layer. Micropyle present, oocyst residuum and polar granule absent. There was no apparent cross transmission of coccidia found in blue wildebeest with those generally reported to infect domestic cattle.
Tipo de publicação: JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T


  6 / 74 MEDLINE  
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PMID:26586629
Autor:Yang R; Brice B; Ryan U
Endereço:School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia 6150, Australia. Electronic address: R.Yang@murdoch.edu.au.
Título:Morphological and molecular characterization of Choleoeimeria pogonae n. sp. coccidian parasite (Apicomplexa: Eimeriidae, 1989, Paperna and Landsberg) in a western bearded dragon (Pogona minor minor).
Fonte:Exp Parasitol; 160:11-6, 2016 Jan.
ISSN:1090-2449
País de publicação:United States
Idioma:eng
Resumo:A new species, Choleoeimeria pogonae n. sp. is described from a Western bearded dragon (Pogona minor minor) in Western Australia. Sporulated oocysts (n = 48) were cylindroidal in shape. Oocyst length, 27.0 (26.0-28.3) µm, oocyst width, 15.2 (14.0-16.5) µm, oocyst length/width ratio (L/W) 1.8 (1.6-1.9), each with 4 sporocysts (Eimeria-like) and a polar granule, but lacking a micropyle and oocyst residuum. Sporocysts are ovoidal in shape, sporocyst length, 10.0 (9.0-11.0) µm, sporocyst width 8.5 (7.0-9.5) µm, sporocyst L/W ratio, 1.2 (1.1-1.3). Stieda, substieda and parasubstieda bodies were all absent. Molecular analysis was conducted at the 18S rRNA and cytochrome c oxidase I (COI) loci. Phylogenetic analysis of 18S sequences revealed that C. pogonae n. sp. grouped together with another four Choleoeimeria spp. and exhibited 99.1%-99.4% genetic similarity. At the COI locus, C. pogonae n. sp. was in an independent clade and had the highest similarity (80.4%) to Eimeria cf. mivati from a chicken (Gallus gallus domesticus). According to the morphological and molecular data, this isolate is a new species of coccidian parasite. This study further supports the taxonomy of Choleoeimeria spp. as a new genus based on molecular phylogenetic analysis.
Tipo de publicação: JOURNAL ARTICLE
Nome de substância:0 (DNA, Protozoan); 0 (RNA, Ribosomal, 18S); EC 1.9.3.1 (Electron Transport Complex IV)


  7 / 74 MEDLINE  
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PMID:26567903
Autor:Tham HL; Linder KE; Tucker A; Maggi R; Bizikova P
Endereço:Department of Clinical Sciences, North Carolina State University College of Veterinary Medicine, 1052 William Moore Drive, Raleigh, NC, 27607, USA.
Título:Protozoal nodular dermatitis and panniculitis in a Rottweiler puppy caused by Caryospora bigenetica.
Fonte:Vet Dermatol; 27(1):44-e12, 2016 Feb.
ISSN:1365-3164
País de publicação:England
Idioma:eng
Resumo:BACKGROUND: Caryospora bigenetica is an intracellular protozoan parasite in snakes and raptors (primary hosts) and rodents (secondary host). Experimental infection has been documented in mice, pigs and goats; natural infection in dogs is rare. OBJECTIVES: To describe the clinical presentation, histological features, treatment and outcome of a case of protozoal nodular dermatitis and panniculitis in a Rottweiler puppy caused by C. bigenetica. RESULTS: The puppy presented with generalized subcutaneous nodules measuring up to 2 cm in diameter. Histopathology revealed marked suppurative to pyogranulomatous dermatitis and panniculitis with intralesional protozoal organism. PCR and DNA sequencing confirmed infection with C. bigenetica. Treatment with a combination of oral trimethoprim-sulfamethoxazole (TMS), pyrimethamine and high-dose clindamycin (20 mg/kg twice daily) resulted in resolution of lesions in 6 weeks. Discontinuation of the treatment 2 weeks later was followed by a rapid relapse of skin lesions. Clindamycin and TMS were restarted and all lesions resolved within 2 weeks; TMS was discontinued 4 weeks later due to adverse effects. The lesions remained in remission for 2 months while the puppy received clindamycin monotherapy before a second relapse of skin lesions occurred. CONCLUSION AND CLINICAL IMPORTANCE: To the best of the authors' knowledge, this is the first documentation of the treatment and outcome of C. bigenetica cutaneous infection in a dog. Although remission of clinical signs can be achieved with combination therapy of clindamycin and TMS, long-term management is challenging and relapses should be anticipated.
Tipo de publicação: CASE REPORTS; JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
Nome de substância:0 (Anti-Infective Agents)


  8 / 74 MEDLINE  
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PMID:26599727
Autor:Dogga SK; Bartosová-Sojková P; Lukes J; Soldati-Favre D
Endereço:Department of Microbiology and Molecular Medicine, University of Geneva. CMU, 1 Rue Michel-Servet, CH-1211 Geneva 4, Switzerland.
Título:Phylogeny, Morphology, and Metabolic and Invasive Capabilities of Epicellular Fish Coccidium Goussia janae.
Fonte:Protist; 166(6):659-76, 2015 Dec.
ISSN:1618-0941
País de publicação:Germany
Idioma:eng
Resumo:To fill the knowledge gap on the biology of the fish coccidian Goussia janae, RNA extracted from exogenously sporulated oocysts was sequenced. Analysis by Trinity and Trinotate pipelines showed that 84.6% of assembled transcripts share the highest similarity with Toxoplasma gondii and Neospora caninum. Phylogenetic and interpretive analyses from RNA-seq data provide novel insight into the metabolic capabilities, composition of the invasive machinery and the phylogenetic relationships of this parasite of cold-blooded vertebrates with other coccidians. This allows re-evaluation of the phylogenetic position of G. janae and sheds light on the emergence of the highly successful obligatory intracellularity of apicomplexan parasites. G. janae possesses a partial glideosome and along with it, the metabolic capabilities and adaptions of G. janae might provide cues as to how apicomplexans adjusted to extra- or intra-cytoplasmic niches and also to become obligate intracellular parasites. Unlike the similarly localized epicellular Cryptosporidium spp., G. janae lacks the feeder organelle necessary for directly scavenging nutrients from the host. Transcriptome analysis indicates that G. janae possesses metabolic capabilities comparable to T. gondii. Additionally, this enteric coccidium might also access host cell nutrients given the presence of a recently identified gene encoding the molecular sieve at the parasitophorous vacuole membrane.
Tipo de publicação: JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
Nome de substância:0 (RNA, Protozoan)


  9 / 74 MEDLINE  
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Texto completo SciELO Brasil
PMID:25909262
Autor:Viana LA; Mecchi KC; do Nascimento LF; Herrera HM; Santa-Rita PH; Miglionico MT; Esteves RG; Gimenez AR; Paiva F
Endereço:Laboratório de Parasitologia Veterinária, Centro de Ciências Biológicas e da Saúde, Universidade Federal do Mato Grosso do Sul, Campo Grande, MS, Brasil.
Título:Caryospora bigenetica (Apicomplexa: Eimeriidae) in South America: new hosts and distribution records.
Fonte:Rev Bras Parasitol Vet; 24(1):101-4, 2015 Jan-Mar.
ISSN:1984-2961
País de publicação:Brazil
Idioma:eng
Resumo:The coccidian Caryospora bigenetica was first described in the snake Crotalus horridus (Viperidae) from United States of America. This study represents the first record of the occurrence of C. bigenetica in snakes in South America. Feces were sampled between November 2013 and May 2014 from 256 wild snakes maintained in scientific breeding facilities in the states of Mato Grosso do Sul (MS; n = 214) and Rio de Janeiro (RJ; n = 42), Brazil. Caryospora bigenetica was found in 14 (5.6%) snakes, all belonging to the family Viperidae. Ten Bothrops moojeni and two Crotalus durissus from MS were infected. The coccidian was also found in one C. durissus and in one Bothrops jararacussu from the state of RJ. The oocysts were spherical with a double wall, the exterior lightly mammillated, striations apparent in transverse view, 13.0 µm (12 - 14); polar granule fixed in the internal wall. Sporocysts oval or pyriform, 10.0 × 8.0 µm (9 - 11 × 8 - 9); Stieda body discoid; sub-Stieda body present; sporocyst residuum present, formed by a group of spheroid bodies between sporozoites. This study increases the number of viperid hosts of C. bigenetica and expands the geographical distribution to South America.
Tipo de publicação: JOURNAL ARTICLE


  10 / 74 MEDLINE  
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PMID:25592755
Autor:Abdel-Haleem HM
Endereço:Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt, hm_haleem12@yahoo.com.
Título:A new species of Choleoeimeria (Apicomplexa: Eimeriidae) parasitic in the rough-tailed gecko Cyrtopodion scabrum (Sauria: Gekkonidae) in Egypt.
Fonte:Parasitol Res; 114(3):1153-7, 2015 Mar.
ISSN:1432-1955
País de publicação:Germany
Idioma:eng
Resumo:Coprological examination of 15 samples of the rough-tailed gecko Cyrtopodion scabrum collected from Abu Rawash, Giza, Egypt, revealed that 20 % (3/15) were passing oocysts of a new Choleoeimeria species. Oocysts of Choleoeimeria scabrumi n. sp. are ellipsoidal with a smooth, yellow to orange, bilayered smooth wall, measure 26 × 13 µm, and have a length/width (L/W) ratio of 1.8. Polar granule, micropyle and oocyst residuum are absent. Sporocysts are ellipsoidal and 8 × 5 µm and the sporocyst wall has two plates joined by a longitudinal suture. Stieda, substieda and parastieda bodies are absent. The endogenous development is confined to the gallbladder epithelium. Mature meronts are subspheroidal and 11-13 × 8-10 µm. Macrogamonts are mostly spheroidal and 12-14 µm wide, with a prominent nucleus in the centre. Microgamonts are irregular in shape, 9-11 × 5-7 µm. Based on the morphological features of the oocysts and the endogenous development in the gallbladder epithelium, we identified this biliary coccidium to be a new species in the genus Choleoeimeria.
Tipo de publicação: JOURNAL ARTICLE



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