Base de dados : MEDLINE
Pesquisa : A11.870.740 [Categoria DeCS]
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[PMID]:28324166
[Au] Autor:Zhang JY; Zhao YL; Batueva MD; Luo D; Xing ZF; Zhang QQ; Liu XH
[Ad] Endereço:Fish Diseases Laboratory, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, People's Republic of China. zhangjy@ihb.ac.cn.
[Ti] Título:Redescription of Chloromyxum ellipticum Li & Nie, 1973 (Myxosporea: Chloromyxidae) infecting the gall bladder of grass carp Ctenopharyngodon idellus Valenciennes, 1844, supplemented by morphological and molecular characteristics.
[So] Source:Parasitol Res;116(5):1479-1486, 2017 May.
[Is] ISSN:1432-1955
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:The traditional taxonomy of the genus Chloromyxum Mingazzini, 1890 has been intensively challenged to be paraphyletic by recent ribosomal DNA (rDNA)-based phylogenetic analysis. Undersampling to get rich sequence data to infer more scientific phylogenetic relationships makes scientists conservatively assign all non-marine elasmobranch-infecting species as Chloromyxum sensu lato. Although complex ridge pattern on the spore surface observed by scanning electron microscopy was thought to be critical for the identification of Chloromyxum species, insufficient data also prevent this ultrastructural data to be a valid taxonomic feature for this genus. It is especial for Chloromyxum species to be reported in China. Molecular and ultrastructural characteristics are yet available for all 22 Chloromyxum species recorded in China. During the investigation of the diversity of coelozoic fish myxosporeans, Chloromyxum ellipticum Li & Nie, 1973 was found to highly infect the gall bladder of Ctenopharyngodon idellus Valenciennes, 1844 in Poyang Lake watershed of Jiangxi province, Eastern China. Here, we redescribed it by the currently recommended holistic approach of combining morphological, ultrastructural, and molecular characteristics. Mature spores were found floating free in the gall bladder, but no plasmodium observed. Spores are typical freshwater teleost-infecting Chloromyxum species, spherical or subspherical in lateral view, measuring 7.7 ± 0.08 µm (6.9-9.1) in length, 6.3 ± 0.09 µm (5.6-7.6) in width, and 5.8 ± 0.20 µm (5.2-6.3) in thickness. Four pyriform polar capsules, located at the anterior end of the spores, were equal in size, 3.3 ± 0.06 µm (2.2-4.1) long and 2.1 ± 0.03 µm (1.7-2.5) wide. Polar filaments coiled with four to five turns. Two equal spore valves are symmetrical, with 10-16 surface extrasutural ridges per valve, aligned along the longitudinal axis. The obtained partial 18S rDNA of C. ellipticum did not match any sequences available in GenBank. Phylogenetic analysis showed that C. ellipticum clustered firstly with Chloromyxum legeri with robust nodal support and grouped then with urinary system of freshwater teleost-infecting Chloromyxum clade, rather than other gall bladder of freshwater teleost-infecting clade.
[Mh] Termos MeSH primário: Carpas/parasitologia
Doenças dos Peixes/parasitologia
Vesícula Biliar/parasitologia
Myxozoa/classificação
Myxozoa/isolamento & purificação
Doenças Parasitárias em Animais/parasitologia
Esporos de Protozoários/ultraestrutura
[Mh] Termos MeSH secundário: Animais
China
DNA Ribossômico/genética
Lagos
Microscopia Eletrônica de Varredura
Myxozoa/genética
Filogenia
Esporos de Protozoários/isolamento & purificação
Bexiga Urinária/parasitologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Ribosomal)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:171007
[Lr] Data última revisão:
171007
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170322
[St] Status:MEDLINE
[do] DOI:10.1007/s00436-017-5424-z


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[PMID]:28323544
[Au] Autor:Hoang K; Tao L; Hunter MD; de Roode JC
[Ad] Endereço:Department of Biology, Emory University, 1510 Clifton Road, Atlanta, Georgia 30322. Correspondence should be sent to Kevin Hoang at: kevinmhoang3@gmail.com.
[Ti] Título:Host Diet Affects the Morphology of Monarch Butterfly Parasites.
[So] Source:J Parasitol;103(3):228-236, 2017 Jun.
[Is] ISSN:1937-2345
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Understanding host-parasite interactions is essential for ecological research, wildlife conservation, and health management. While most studies focus on numerical traits of parasite groups, such as changes in parasite load, less focus is placed on the traits of individual parasites such as parasite size and shape (parasite morphology). Parasite morphology has significant effects on parasite fitness such as initial colonization of hosts, avoidance of host immune defenses, and the availability of resources for parasite replication. As such, understanding factors that affect parasite morphology is important in predicting the consequences of host-parasite interactions. Here, we studied how host diet affected the spore morphology of a protozoan parasite ( Ophryocystis elektroscirrha ), a specialist parasite of the monarch butterfly ( Danaus plexippus ). We found that different host plant species (milkweeds; Asclepias spp.) significantly affected parasite spore size. Previous studies have found that cardenolides, secondary chemicals in host plants of monarchs, can reduce parasite loads and increase the lifespan of infected butterflies. Adding to this benefit of high cardenolide milkweeds, we found that infected monarchs reared on milkweeds of higher cardenolide concentrations yielded smaller parasites, a potentially hidden characteristic of cardenolides that may have important implications for monarch-parasite interactions.
[Mh] Termos MeSH primário: Apicomplexa/ultraestrutura
Borboletas/parasitologia
[Mh] Termos MeSH secundário: Animais
Apicomplexa/crescimento & desenvolvimento
Asclepias/química
Borboletas/fisiologia
Cardenolídeos/metabolismo
Dieta
Feminino
Interações Hospedeiro-Parasita
Masculino
Esporos de Protozoários/ultraestrutura
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Cardenolides)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170628
[Lr] Data última revisão:
170628
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170322
[St] Status:MEDLINE
[do] DOI:10.1645/16-142


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[PMID]:28232063
[Au] Autor:Dar SA; Kaur H; Chishti MZ
[Ad] Endereço:Department of Zoology and Environmental Sciences, Punjabi University Patiala, India; Centre of Research for Development, University of Kashmir, Srinagar, India.
[Ti] Título:Myxobolus chushi n. sp. (Myxozoa:Myxosporea) parasitizing Schizothorax niger (Heckel), a native cyprinid fish from Wullar Lake in Kashmir Himalayas.
[So] Source:Parasitol Int;66(3):272-278, 2017 Jun.
[Is] ISSN:1873-0329
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:In the study, a new species, Myxobolus chushi n. sp. infecting gills of wild specimens of Schizothorax niger (Heckel) inhabiting Wullar Lake in Kashmir Himalayas, (J&K) India has been described based on morphology of the myxospore and using partial 18S rDNA sequencing. Pathological changes in the gills have been studied with the help of histological sections stained with Luna's method. Twenty fish specimens were examined, out of which four had oval, white plasmodia in gills measuring 2.0×0.5mm. The myxospores were spherical to ovoidal in shape with slightly attenuated posterior end, measuring 11.17±0.23 (10.60-11.40)µm in length and 9.14±0.06 (8.80-9.20)µm in width, having a prominent pore at the anterior end. The polar capsules were pyriform in shape, measuring 4.25±0.15 (4.00-4.40)µm in length and 2.38±0.27 (2.00-2.65)µm in width having polar filaments forming coils up to 5 in number. Parietal folds 9 in number present on the posterior part of the shell. The intensity of infection was recorded to be moderate as indicated by gill plasmodial index (GPI=2). The plasmodium was located in the vascular network occupying whole of the gill lamella therefore typed as intralamellar vascular type, LV . Analysis of 18S small subunit (SSU) rDNA sequence of the isolate demonstrated 90% homogeneity with M. sp. KLT-2014 infecting scales of Labeo rohita from Myanmar and 89% with M. dermiscalis infecting scales of Labeo rohita from India.
[Mh] Termos MeSH primário: Cyprinidae/parasitologia
Doenças dos Peixes/parasitologia
Myxobolus/classificação
Myxobolus/fisiologia
Doenças Parasitárias em Animais/parasitologia
[Mh] Termos MeSH secundário: Animais
Doenças dos Peixes/epidemiologia
Brânquias/parasitologia
Brânquias/patologia
Índia/epidemiologia
Lagos/parasitologia
Myxobolus/genética
Myxobolus/isolamento & purificação
Doenças Parasitárias em Animais/epidemiologia
Filogenia
RNA Ribossômico 18S/genética
Esporos de Protozoários/citologia
Esporos de Protozoários/crescimento & desenvolvimento
Esporos de Protozoários/isolamento & purificação
Esporos de Protozoários/ultraestrutura
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (RNA, Ribosomal, 18S)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170510
[Lr] Data última revisão:
170510
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170225
[St] Status:MEDLINE


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[PMID]:28232055
[Au] Autor:Dar SA; Kaur H; Chishti MZ
[Ad] Endereço:Department of Zoology and Environmental Sciences, Punjabi University Patiala, India; Centre of Research for Development, University of Kashmir, Srinagar, India.
[Ti] Título:First record of myxozoan parasites from fresh water fishes of Jammu and Kashmir and their pathogenecity.
[So] Source:Microb Pathog;105:138-144, 2017 Apr.
[Is] ISSN:1096-1208
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The present study was aimed to isolate myxozoan parasites infecting the native carp Schizothorax esocinus (Heckel) and pond reared carp Labeo rohita (Ham.) collected from fresh water ecosystems of Jammu and Kashmir from July 2013 to June 2014. Various organs such as eyes, gills, scales, fins, intestines, visceral organs and pericardial cavity of as many as 100 live specimens were examined. Results revealed that 14% of the examined L. rohita were infected with Myxobolus rocatlae (Ham.) and 6% of S. esocinus (Heckel) were infected with M. kashmirensis sp. nov. Clinical signs revealed mucous laden gills while the parasitological observation under stereozoom binocular microscope revealed multiple minute plasmodia on the gills. On rupturing these plasmodia with sharp needle 100-500 myxospores were liberated. The identification to species level was done on the basis of morphological and morphometric attributes of the myxospores. This is the first record of myxozoan parasites in fishes from the state of Jammu and Kashmir, India. Histological observations of infected gills revealed plasmodia of two types (LV intralamellar vascular type) in M. rocatlae and (LV intralamellar vascular type) in M. kasmirensis causing necrosis, hyperplasia, hypertrophy and vacuolization of the epithelial and vascular endothelium.
[Mh] Termos MeSH primário: Carpas/parasitologia
Doenças dos Peixes/parasitologia
Água Doce/parasitologia
Myxozoa/isolamento & purificação
Doenças Parasitárias em Animais/parasitologia
[Mh] Termos MeSH secundário: Animais
Doenças dos Peixes/patologia
Brânquias/parasitologia
Brânquias/patologia
Índia
Myxozoa/classificação
Filogenia
Tanques
Especificidade da Espécie
Esporos de Protozoários
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170505
[Lr] Data última revisão:
170505
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170225
[St] Status:MEDLINE


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[PMID]:28099501
[Au] Autor:Satterfield DA; Altizer S; Williams MK; Hall RJ
[Ad] Endereço:Odum School of Ecology, University of Georgia, Athens, Georgia, United States of America.
[Ti] Título:Environmental Persistence Influences Infection Dynamics for a Butterfly Pathogen.
[So] Source:PLoS One;12(1):e0169982, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Many pathogens, including those infecting insects, are transmitted via dormant stages shed into the environment, where they must persist until encountering a susceptible host. Understanding how abiotic conditions influence environmental persistence and how these factors influence pathogen spread are crucial for predicting patterns of infection risk. Here, we explored the consequences of environmental transmission for infection dynamics of a debilitating protozoan parasite (Ophryocystis elektroscirrha) that infects monarch butterflies (Danaus plexippus). We first conducted an experiment to observe the persistence of protozoan spores exposed to natural conditions. Experimental results showed that, contrary to our expectations, pathogen doses maintained high infectivity even after 16 days in the environment, although pathogens did yield infections with lower parasite loads after environmental exposure. Because pathogen longevity exceeded the time span of our experiment, we developed a mechanistic model to better explore environmental persistence for this host-pathogen system. Model analysis showed that, in general, longer spore persistence led to higher infection prevalence and slightly smaller monarch population sizes. The model indicated that typical parasite doses shed onto milkweed plants must remain viable for a minimum of 3 weeks for prevalence to increase during the summer-breeding season, and for 11 weeks or longer to match levels of infection commonly reported from the wild, assuming moderate values for parasite shedding rate. Our findings showed that transmission stages of this butterfly pathogen are long-lived and indicated that this is a necessary condition for the protozoan to persist in local monarch populations. This study provides a modeling framework for future work examining the dynamics of an ecologically important pathogen in an iconic insect.
[Mh] Termos MeSH primário: Borboletas/parasitologia
Interações Hospedeiro-Parasita
Sarcocystis/patogenicidade
[Mh] Termos MeSH secundário: Animais
Asclepias/parasitologia
Folhas de Planta/parasitologia
Densidade Demográfica
Sarcocystis/fisiologia
Sarcocistose/transmissão
Sarcocistose/veterinária
Esporos de Protozoários/patogenicidade
Esporos de Protozoários/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170811
[Lr] Data última revisão:
170811
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170119
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0169982


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[PMID]:28074022
[Au] Autor:Tomita T; Sugi T; Yakubu R; Tu V; Ma Y; Weiss LM
[Ad] Endereço:Department of Pathology, Albert Einstein College of Medicine, Bronx, New York, USA.
[Ti] Título:Making Home Sweet and Sturdy: Toxoplasma gondii ppGalNAc-Ts Glycosylate in Hierarchical Order and Confer Cyst Wall Rigidity.
[So] Source:MBio;8(1), 2017 Jan 10.
[Is] ISSN:2150-7511
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The protozoan intracellular parasite Toxoplasma gondii forms latent cysts in the central nervous system (CNS) and persists for the lifetime of the host. This cyst is cloaked with a glycosylated structure called the cyst wall. Previously, we demonstrated that a mucin-like glycoprotein, CST1, localizes to the cyst wall and confers structural rigidity on brain cysts in a mucin-like domain-dependent manner. The mucin-like domain of CST1 is composed of 20 units of threonine-rich tandem repeats that are O-GalNAc glycosylated. A family of enzymes termed polypeptide N-acetylgalactosaminyltransferases (ppGalNAc-Ts) initiates O-GalNAc glycosylation. To identify which isoforms of ppGalNAc-Ts are responsible for the glycosylation of the CST1 mucin-like domain and to evaluate the function of each ppGalNAc-T in the overall glycosylation of the cyst wall, all five ppGalNAc-T isoforms were deleted individually from the T. gondii genome. The ppGalNAc-T2 and -T3 deletion mutants produced various glycosylation defects on the cyst wall, implying that many cyst wall glycoproteins are glycosylated by T2 and T3. Both T2 and T3 glycosylate the CST1 mucin-like domain, and this glycosylation is necessary for CST1 to confer structural rigidity on the cyst wall. We established that T2 is required for the initial glycosylation of the mucin-like domain and that T3 is responsible for the sequential glycosylation on neighboring acceptor sites, demonstrating hierarchical glycosylation by two distinct initiating and filling-in ppGalNAc-Ts in an intact organism. IMPORTANCE: Toxoplasma gondii is an obligate intracellular parasite that infects a third of the world's population. It can cause severe congenital disease and devastating encephalitis in immunocompromised individuals. We identified two glycosyltransferases, ppGalNAc-T2 and -T3, which are responsible for glycosylating cyst wall proteins in a hierarchical fashion. This glycosylation confers structural rigidity on the brain cyst. Our studies provide new insights into the mechanisms of O-GalNAc glycosylation in T. gondii.
[Mh] Termos MeSH primário: Glicoproteínas/metabolismo
Glicosilação
N-Acetilgalactosaminiltransferases/metabolismo
Proteínas de Protozoários/metabolismo
Esporos de Protozoários/química
Toxoplasma/enzimologia
[Mh] Termos MeSH secundário: Deleção de Genes
N-Acetilgalactosaminiltransferases/genética
Esporos de Protozoários/crescimento & desenvolvimento
Toxoplasma/genética
Toxoplasma/crescimento & desenvolvimento
Toxoplasma/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Glycoproteins); 0 (Protozoan Proteins); EC 2.4.1.- (N-Acetylgalactosaminyltransferases); EC 2.4.1.41 (polypeptide N-acetylgalactosaminyltransferase)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170914
[Lr] Data última revisão:
170914
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170112
[St] Status:MEDLINE


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[PMID]:28062987
[Au] Autor:Xi BW; Li P; Liu QC; Chen K; Teng T; Xie J
[Ad] Endereço:Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China. xibw@ffrc.cn.
[Ti] Título:Description of a new Neoactinomyxum type actinosporean from the oligochaete Branchiura sowerbyi Beddard.
[So] Source:Syst Parasitol;94(1):73-80, 2017 Jan.
[Is] ISSN:1573-5192
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Actinosporean infection of oligochaetes living in the mud of a commercial gibel carp pond with myxosporean disease was studied. Six actinospore types were detected exclusively from the oligochaete Branchiura sowerbyi Beddard with very high prevalence (18%). Five out of the six types were identified as the same actinosporeans described in previous reports, the sixth actinosporean was identified as a new Neoactinomyxum type and described here based on morphological and molecular characterisation. Spore body of the actinospore was globular, much smaller than caudal processes. Three caudal processes were disc-like in apical view, hemispherical in side view, closer together and encircling the spore body. The number of sporoplasm cells was detected as eight in one specimen. The new actinosporean markedly differed from other Neoactinomyxum types in literature having much bigger caudal processes. DNA sequence analyses further confirmed the morphological identification, and revealed the actinosporean described here (KU641392) possessed less than 94% sequence similarity with myxozoans available in the GenBank database.
[Mh] Termos MeSH primário: Myxozoa/classificação
Oligoquetos/parasitologia
[Mh] Termos MeSH secundário: Animais
Myxozoa/citologia
Myxozoa/genética
RNA Ribossômico 18S/genética
Especificidade da Espécie
Esporos de Protozoários/citologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (RNA, Ribosomal, 18S)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:171101
[Lr] Data última revisão:
171101
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170108
[St] Status:MEDLINE
[do] DOI:10.1007/s11230-016-9677-1


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[PMID]:28012028
[Au] Autor:Jeon CH; Do JW; Nam UH; Kim WS; Kim JH
[Ad] Endereço:East Coast Life Science Institute, Gangneung-Wonju National University, Gangneung, 25457, South Korea.
[Ti] Título:Development of PCR method for detecting Kudoa iwatai (Myxozoa: Multivalvulida) from rock bream Oplegnathus fasciatus.
[So] Source:Parasitol Res;116(2):789-796, 2017 Feb.
[Is] ISSN:1432-1955
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:We developed a PCR assay targeting the 28S rDNA of Kudoa iwatai (Multivalvulida: Myxozoa) and investigated the prevalence of infection in rock bream Oplegnathus fasciatus, which is commercially an important aquaculture species in Korea, with this assay. Detection limit of the PCR assay was 2.5 fg/µl with plasmid DNA and 8.6 × 10 spores/ml with purified spores, respectively. This PCR assay did not amplify DNA of other Kudoa species (Kudoa septempunctata, Kudoa lateolabracis, Kudoa thyrsites) tested. Sliced muscles of whole body from 318 rock bream (wild and cultured) were examined by this PCR assay and also with the naked eyes. All of the wild fish did not produce amplicons nor did harbor visible Kudoa cysts (0/70). Three of the cultured fish were PCR-positive and also harbored visible Kudoa cysts (3/248, 1.2%). The sequences of amplicons (574 bp) were 100% identical with those of the K. iwatai already registered in Genbank. When the visceral organs of these three fish were examined, visible cysts were not found, but one stomach sample was found to be PCR-positive. There was no difference in the prevalence of infection estimated by PCR assay and the presence of visible Kudoa cysts in our samples. This is thought to be because the development of K. iwatai is already completed and only mature Kudoa cysts existed in our samples.
[Mh] Termos MeSH primário: Doenças dos Peixes/parasitologia
Myxozoa/classificação
Doenças Parasitárias em Animais/parasitologia
Perciformes/parasitologia
[Mh] Termos MeSH secundário: Animais
Aquicultura
DNA Ribossômico/química
DNA Ribossômico/genética
Doenças dos Peixes/epidemiologia
Músculos/parasitologia
Myxozoa/genética
Myxozoa/isolamento & purificação
Doenças Parasitárias em Animais/epidemiologia
Filogenia
Reação em Cadeia da Polimerase/veterinária
República da Coreia/epidemiologia
Análise de Sequência de DNA/veterinária
Esporos de Protozoários
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Ribosomal)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:171007
[Lr] Data última revisão:
171007
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161225
[St] Status:MEDLINE
[do] DOI:10.1007/s00436-016-5354-1


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[PMID]:27862633
[Au] Autor:Gao Y; Tao W; Yan SZ; Chen SL
[Ad] Endereço:College of Life Sciences, Nanjing Normal University, Nanjing, Jiangsu, 210023, China.
[Ti] Título:The Life Cycle of Didymium laxifilum and Physarum album on Oat Agar Culture.
[So] Source:J Eukaryot Microbiol;64(4):457-463, 2017 Jul.
[Is] ISSN:1550-7408
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The plasmodial slime molds is the largest group in the phylum Amoebozoa. Its life cycle includes the plasmodial trophic stage and the spore-bearing fruiting bodies. However, only a few species have their complete life cycle known in details so far. This study is the first reporting the morphogenesis of Didymium laxifilum and Physarum album. Spores, from field-collected sporangia, were incubated into hanging drop cultures for viewing germination and axenic oat agar plates for viewing plasmodial development and sporulation. The spores of D. laxifilum and P. album germinated by method of V-shape split and minute pore, respectively. The amoeboflagellates, released from spores, were observed in water film. The phaneroplasmodia of two species developed into a number of sporangia by subhypothallic type on oat agar culture. The main interspecific difference of morphogenesis was also discussed.
[Mh] Termos MeSH primário: Estágios do Ciclo de Vida/fisiologia
Mixomicetos/crescimento & desenvolvimento
Physarum/crescimento & desenvolvimento
[Mh] Termos MeSH secundário: Cultura Axênica
Microscopia Eletrônica de Varredura
Morfogênese
Mixomicetos/classificação
Physarum/classificação
Esporos de Protozoários/crescimento & desenvolvimento
Madeira/parasitologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170919
[Lr] Data última revisão:
170919
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161119
[St] Status:MEDLINE
[do] DOI:10.1111/jeu.12383


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[PMID]:27788039
[Au] Autor:Chinchilla M; Valerio I; Sánchez R; Duszynski DW
[Ad] Endereço:Research Department, Universidad de Ciencias Médicas (UCIMED), San José, Costa Rica, del MAG 400 metros al Oeste carretera a Escazú, Código postal 638-1007 Centro Colón.
[Ti] Título:Endogenous Life Cycle of Eimeria melanomytis (Apicomplexa: Eimeriidae) from the Dusky Rice Rat, Melanomys caliginosus (Rodentia: Cricetidae: Sigmodontinae) in Costa Rica.
[So] Source:J Parasitol;103(1):56-62, 2017 Feb.
[Is] ISSN:1937-2345
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Endogenous stages of the life cycle of Eimeria melanomytis, infecting the peripheral epithelial cells of villi of the small intestine of experimentally infected young dusky rice rats, Melanomys caliginosus , were studied. Giemsa-stained mucosal scrapings and histological sections were examined for all the stages. Eimeria melanomytis has 3 generations of meronts (M), different in size, shape, and number of merozoites (m); and in size, shape, and location of the nuclei within the cytoplasm of the meronts. The 3 meront types, M -M , respectively, had 11-14 (m ), 7-10 (m ), and 20-30 (m ) merozoites. Macrogametocytes and microgametocytes, as well as macrogametes and microgametes, complete the sexual cycle forming the unsporulated oocysts. This parasite's endogenous development produced severe intestinal lesions in experimentally infected dusky rice rats.
[Mh] Termos MeSH primário: Coccidiose/veterinária
Eimeria/crescimento & desenvolvimento
Estágios do Ciclo de Vida
Doenças dos Roedores/parasitologia
Sigmodontinae/parasitologia
[Mh] Termos MeSH secundário: Animais
Coccidiose/parasitologia
Costa Rica
Eimeria/isolamento & purificação
Eimeria/fisiologia
Fezes/parasitologia
Intestino Delgado/parasitologia
Intestino Delgado/ultraestrutura
Merozoítos
Microvilosidades/parasitologia
Oocistos
Esporos de Protozoários
Trofozoítos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170531
[Lr] Data última revisão:
170531
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161028
[St] Status:MEDLINE
[do] DOI:10.1645/16-98



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