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[PMID]:29320818
[Au] Autor:Chai JY; Sohn WM; Na BK; Park JB; Jeoung HG; Hoang EH; Htoon TT; Tin HH
[Ad] Endereço:Korea Association of Health Promotion, Seoul 07653, Korea.
[Ti] Título:Zoonotic Trematode Metacercariae in Fish from Yangon, Myanmar and Their Adults Recovered from Experimental Animals.
[So] Source:Korean J Parasitol;55(6):631-641, 2017 Dec.
[Is] ISSN:1738-0006
[Cp] País de publicação:Korea (South)
[La] Idioma:eng
[Ab] Resumo:A survey was performed to investigate the infection status of zoonotic trematode (ZT) metacercariae in fish from a local market in Yangon City, Myanmar. A total of 264 fish (12 species) were collected through 4 times from December 2013 to June 2015. All collected fish were transferred to our laboratory on ice and examined by the artificial digestion method. More than 7 species of ZT metacercariae, i.e., Haplorchis taichui, H. pumilio, H. yokogawai, Centrocestus spp., Stellantchasmus falcatus, Pygidiopsis cambodiensis, and Procerovum sp. were detected. Metacercariae of H. taichui were collected in 58 (42.3%) out of 137 fish (5 species), and their average density was 42.9 per fish infected. Metacercariae of H. pumilio were detected in 96 (49.0%) out of 196 fish (9 species), and their average density was 23.6 per fish infected. H. yokogawai metacercariae were found in 40 (50.0%) out of 80 fish (5 species), and Centrocestus spp. metacercariae in 91 (50.8%) out of 179 fish (8 species), and their densities were 306 and 25.8 per fish infected, respectively. Metacercariae of S. falcatus and P. cambodiensis were detected only in mullets, Chelon macrolepis. A total of 280 Procerovum sp. metacercariae were found in 6 out of 12 climbing perch, Anabas testudineus. Morphological characteristics of adult flukes recovered from experimental animals were described. It has been first confirmed that fish from Yangon, Myanmar are commonly infected with various species of ZT metacercariae.
[Mh] Termos MeSH primário: Peixes/parasitologia
Metacercárias/isolamento & purificação
Trematódeos/isolamento & purificação
[Mh] Termos MeSH secundário: Animais
Gatos
Cricetinae
Seres Humanos
Metacercárias/anatomia & histologia
Mianmar/epidemiologia
Trematódeos/anatomia & histologia
Infecções por Trematódeos/epidemiologia
Infecções por Trematódeos/parasitologia
Zoonoses
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180112
[St] Status:MEDLINE
[do] DOI:10.3347/kjp.2017.55.6.631


  2 / 5339 MEDLINE  
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[PMID]:29237445
[Au] Autor:Dagan Y; Kosman E; Ben-Ami F
[Ad] Endereço:School of Zoology, George S. Wise Faculty of Life Sciences, Tel Aviv University, 6997801, Tel Aviv, Israel.
[Ti] Título:Cost of resistance to trematodes in freshwater snail populations with low clonal diversity.
[So] Source:BMC Ecol;17(1):40, 2017 Dec 13.
[Is] ISSN:1472-6785
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: The persistence of high genetic variability in natural populations garners considerable interest among ecologists and evolutionary biologists. One proposed hypothesis for the maintenance of high levels of genetic diversity relies on frequency-dependent selection imposed by parasites on host populations (Red Queen hypothesis). A complementary hypothesis suggests that a trade-off between fitness costs associated with tolerance to stress factors and fitness costs associated with resistance to parasites is responsible for the maintenance of host genetic diversity. RESULTS: The present study investigated whether host resistance to parasites is traded off with tolerance to environmental stress factors (high/low temperatures, high salinity), by comparing populations of the freshwater snail Melanoides tuberculata with low vs. high clonal diversity. Since polyclonal populations were found to be more parasitized than populations with low clonal diversity, we expected them to be tolerant to environmental stress factors. We found that clonal diversity explained most of the variation in snail survival under high temperature, thereby suggesting that tolerance to high temperatures of clonally diverse populations is higher than that of populations with low clonal diversity. CONCLUSIONS: Our results suggest that resistance to parasites may come at a cost of reduced tolerance to certain environmental stress factors.
[Mh] Termos MeSH primário: Variação Genética
Interações Hospedeiro-Parasita
Caramujos/genética
Caramujos/parasitologia
Trematódeos/fisiologia
[Mh] Termos MeSH secundário: Adaptação Fisiológica
Animais
Israel
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171215
[St] Status:MEDLINE
[do] DOI:10.1186/s12898-017-0152-x


  3 / 5339 MEDLINE  
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[PMID]:29405690
[Au] Autor:Shchenkov SV
[Ti] Título:[Description of virgulate Cercaria etgesh larva Nov. (Xiphidiocercariae): A new type of virgule organ].
[So] Source:Parazitologiia;51(2):158-64, 2017 Mar-Apr.
[Is] ISSN:0031-1847
[Cp] País de publicação:Russia (Federation)
[La] Idioma:rus
[Ab] Resumo:A new species of virgulate cercaria is described. The morphology and chaetotaxy of cercariae are studied. The new type of virgule organ is described. Every description is illustrated by drawings.
[Mh] Termos MeSH primário: Estruturas Animais/anatomia & histologia
Cercárias/anatomia & histologia
Gastrópodes/parasitologia
Trematódeos/anatomia & histologia
[Mh] Termos MeSH secundário: Estruturas Animais/fisiologia
Animais
Cercárias/fisiologia
Rios/parasitologia
Federação Russa
Trematódeos/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180222
[Lr] Data última revisão:
180222
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180207
[St] Status:MEDLINE


  4 / 5339 MEDLINE  
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[PMID]:29262347
[Au] Autor:Harris NL; Loke P
[Ad] Endereço:Global Health Institute, École Polytechnique Fédérale de Lausanne, Lausanne 1015, Switzerland. Electronic address: nicola.harris@epfl.ch.
[Ti] Título:Recent Advances in Type-2-Cell-Mediated Immunity: Insights from Helminth Infection.
[So] Source:Immunity;47(6):1024-1036, 2017 Dec 19.
[Is] ISSN:1097-4180
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Type-2-cell-mediated immune responses play a critical role in mediating both host-resistance and disease-tolerance mechanisms during helminth infections. Recently, type 2 cell responses have emerged as major regulators of tissue repair and metabolic homeostasis even under steady-state conditions. In this review, we consider how studies of helminth infection have contributed toward our expanding cellular and molecular understanding of type-2-cell-mediated immunity, as well as new areas such as the microbiome. By studying how these successful parasites form chronic infections without overt pathology, we are gaining additional insights into allergic and inflammatory diseases, as well as normal physiology.
[Mh] Termos MeSH primário: Helmintíase/imunologia
Imunidade Celular
Macrófagos/imunologia
Nematoides/imunologia
Células Th2/imunologia
Trematódeos/imunologia
[Mh] Termos MeSH secundário: Animais
Citocinas/genética
Citocinas/imunologia
Células Epiteliais/imunologia
Células Epiteliais/parasitologia
Regulação da Expressão Gênica/imunologia
Helmintíase/genética
Helmintíase/parasitologia
Homeostase/imunologia
Interações Hospedeiro-Parasita/imunologia
Seres Humanos
Macrófagos/parasitologia
Mastócitos/imunologia
Mastócitos/parasitologia
Microbiota/imunologia
Células Th2/parasitologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Nm] Nome de substância:
0 (Cytokines)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:180221
[Lr] Data última revisão:
180221
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171221
[St] Status:MEDLINE


  5 / 5339 MEDLINE  
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[PMID]:29211424
[Au] Autor:Bakay YI
[Ti] Título:[ECOLOGICAL AND PARASITOLOGICAL CHARACTERISTICS OF THE SMALL REDFISH SEBASTES VIVIPARUS (PISCES: SCORPAENIDAE)].
[So] Source:Parazitologiia;50(5):345-56, 2016 Sep-Oct.
[Is] ISSN:0031-1847
[Cp] País de publicação:Russia (Federation)
[La] Idioma:rus
[Ab] Resumo:The results of the parasite fauna research represent peculiarities of formation and ecological, faunistic and zoogeographical characteristics of parasite fauna of the small redfish Sebastes viviparus Krayer. 1845. This species is distinguished among the other North Atlantic Sebastes by the richest fauna of myxosporidians, trematodes, nematodes and acanthocephalans. The parasite fauna of S. viviparus is formed mainly of boreal species and to a lesser extent of Arctic-boreal species. According to the vertical zonality of parasites in fishes of the North Atlantic they are mainly represented by mesobenthic and epicontinental species. The parasite fauna in small redfish possesses significantly more pronounced geographic specificity than that of other North Atlantic Sebastes species.
[Mh] Termos MeSH primário: Acantocéfalos/fisiologia
Doenças dos Peixes/parasitologia
Helmintíase/parasitologia
Nematoides/fisiologia
Perciformes/parasitologia
Trematódeos/fisiologia
[Mh] Termos MeSH secundário: Acantocéfalos/classificação
Animais
Oceano Atlântico
Nematoides/classificação
Trematódeos/classificação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171221
[Lr] Data última revisão:
171221
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171207
[St] Status:MEDLINE


  6 / 5339 MEDLINE  
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[PMID]:29211423
[Au] Autor:Petrov AA; Podvyaznaya IM
[Ti] Título:CHANGES IN SPINATION PATTERNS OVER THE COURSE OF METACERCARIAL DEVELOPMENT OF DIPLOSTOMUM PSEUDOSPATHACEUM NIEWIADOMSKA, 1984 (TREMATODA, DIPLOSTOMIDAE).
[So] Source:Parazitologiia;50(4):331-9, 2016 Jul-Aug.
[Is] ISSN:0031-1847
[Cp] País de publicação:Russia (Federation)
[La] Idioma:eng
[Ab] Resumo:Metacercarial development of most Diplostomum species including D. pseudospathaceum occurs in the eye lenses of their fish hosts and is accompanied by radical morphological changes often referred to as metamorphosis. One of the structures undergoing substantial changes in D. pseudospathacewn are tegumental spines. The present study used phalloidin staining and confocal microscopy to examine these changes in D. pseudospathaceum over the course of development from 3-day-old to infective metacercariae. Although the general pattern of spination remained essentially unchanged, most larval spines continued growing in size until late in metacercarial development. From day 10 of development, larval spination was gradually replaced by small incipient definitive spines and the infective metacercariae had only definitive spination. The possible adaptive role of spines in developing metacercariae is discussed.
[Mh] Termos MeSH primário: Metacercárias/fisiologia
Metamorfose Biológica/fisiologia
Trematódeos/embriologia
[Mh] Termos MeSH secundário: Animais
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171221
[Lr] Data última revisão:
171221
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171207
[St] Status:MEDLINE


  7 / 5339 MEDLINE  
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[PMID]:28930513
[Au] Autor:Guzman-Salas PJ; Serna-Ojeda JC
[Ad] Endereço:Instituto de Oftalmologia Conde de Valenciana, Mexico City, Mexico pguzman@cataratascr.com.
[Ti] Título:Intraocular Infection with a Trematode.
[So] Source:N Engl J Med;377(12):e15, 2017 Sep 21.
[Is] ISSN:1533-4406
[Cp] País de publicação:United States
[La] Idioma:eng
[Mh] Termos MeSH primário: Infecções Oculares Parasitárias/diagnóstico
Infecções por Trematódeos/diagnóstico
[Mh] Termos MeSH secundário: Adolescente
Animais
Infecções Oculares Parasitárias/complicações
Seres Humanos
Masculino
Trematódeos
Infecções por Trematódeos/complicações
Transtornos da Visão/etiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; VIDEO-AUDIO MEDIA
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170926
[Lr] Data última revisão:
170926
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:170921
[St] Status:MEDLINE
[do] DOI:10.1056/NEJMicm1615038


  8 / 5339 MEDLINE  
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[PMID]:28880928
[Au] Autor:Theisen S; Palm HW; Al-Jufaili SH; Kleinertz S
[Ad] Endereço:Aquaculture and Sea-Ranching, University of Rostock, Rostock, Germany.
[Ti] Título:Pseudempleurosoma haywardi sp. nov. (Monogenea: Ancyrocephalidae (sensu lato) Bychowsky & Nagibina, 1968): An endoparasite of croakers (Teleostei: Sciaenidae) from Indonesia.
[So] Source:PLoS One;12(9):e0184376, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:An endoparasitic monogenean was identified for the first time from Indonesia. The oesophagus and anterior stomach of the croakers Nibea soldado (Lacépède) and Otolithes ruber (Bloch & Schneider) (n = 35 each) sampled from the South Java coast in May 2011 and Johnius amblycephalus (Bleeker) (n = 2) (all Sciaenidae) from Kedonganan fish market, South Bali coast, in November 2016, were infected with Pseudempleurosoma haywardi sp. nov. Prevalences in the first two croakers were 63% and 46%, respectively, and the two J. amblycephalus harboured three and five individuals. All three croakers represent new hosts for this monogenean genus. We provide infection rates, light microscopical observations, 3D confocal microscopical illustrations, and a morphometric comparison with all congeners. The new species differs in body size, the position and shape of the ovary and testes, and especially in the composition of the dorsal anchor complex, with the dorsal bar being anteriorly concave rather than planar or convex as in its congeners. The dorsal and ventral anchors of this new species are the longest in the genus, whereas the male copulatory organ is the smallest. The first DNA sequences for a member of this genus demonstrate the greatest similarity with endoparasitic freshwater monogeneans from African cichlid fishes. This suggests a freshwater origin for these marine endoparasitic monogeneans.
[Mh] Termos MeSH primário: Doenças dos Peixes/parasitologia
Trematódeos/patogenicidade
[Mh] Termos MeSH secundário: Animais
Ciclídeos/parasitologia
Água Doce/parasitologia
Indonésia
Masculino
Microscopia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171016
[Lr] Data última revisão:
171016
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170908
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0184376


  9 / 5339 MEDLINE  
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[PMID]:28760359
[Au] Autor:Bader C; Jesudoss Chelladurai J; Starling DE; Jones DE; Brewer MT
[Ad] Endereço:Department of Veterinary Pathology, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA.
[Ti] Título:Assessment of in vitro killing assays for detecting praziquantel-induced death in Posthodiplostomum minimum metacercariae.
[So] Source:Exp Parasitol;181:70-74, 2017 Oct.
[Is] ISSN:1090-2449
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Control of parasitic infections may be achieved by eliminating developmental stages present within intermediate hosts, thereby disrupting the parasite life cycle. For several trematodes relevant to human and veterinary medicine, this involves targeting the metacercarial stage found in fish intermediate hosts. Treatment of fish with praziquantel is one potential approach for targeting the metacercaria stage. To date, studies investigating praziquantel-induced metacercarial death in fish rely on counting parasites and visually assessing morphology or movement. In this study, we investigate quantitative methods for detecting praziquantel-induced death using a Posthodiplostomum minimum model. Our results revealed that propidium iodide staining accurately identified praziquantel-induced death and the level of staining was proportional to the concentration of praziquantel. In contrast, detection of ATP, resazurin metabolism, and trypan blue staining were poor indicators of metacercarial death. The propidium iodide method offers an advantage over simple visualization of parasite movement and could be used to determine EC values relevant for comparison of praziquantel sensitivity or resistance.
[Mh] Termos MeSH primário: Anti-Helmínticos/farmacologia
Doenças dos Peixes/parasitologia
Perciformes/parasitologia
Praziquantel/farmacologia
Trematódeos/efeitos dos fármacos
Infecções por Trematódeos/veterinária
[Mh] Termos MeSH secundário: Trifosfato de Adenosina/metabolismo
Animais
Corantes
Indicadores e Reagentes/metabolismo
Iowa
Metacercárias/efeitos dos fármacos
Oxazinas/metabolismo
Tanques
Propídio
Espectrofotometria
Infecções por Trematódeos/parasitologia
Azul Tripano
Xantenos/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anthelmintics); 0 (Coloring Agents); 0 (Indicators and Reagents); 0 (Oxazines); 0 (Xanthenes); 1FN9YD6968 (resazurin); 36015-30-2 (Propidium); 6490C9U457 (Praziquantel); 8L70Q75FXE (Adenosine Triphosphate); I2ZWO3LS3M (Trypan Blue)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170920
[Lr] Data última revisão:
170920
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170802
[St] Status:MEDLINE


  10 / 5339 MEDLINE  
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[PMID]:28737158
[Au] Autor:Hrabar J; Bocina I; Gudan Kurilj A; Duras M; Mladineo I
[Ad] Endereço:Laboratory for Aquaculture, Institute of Oceanography and Fisheries, 21000 Split, Croatia.
[Ti] Título:Gastric lesions in dolphins stranded along the Eastern Adriatic coast.
[So] Source:Dis Aquat Organ;125(2):125-139, 2017 07 24.
[Is] ISSN:0177-5103
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Stranded cetaceans are often found with gastric lesions associated with the presence of parasites; most frequently, nematodes of the genus Anisakis and the heterophyd digenean trematode Pholeter gastrophilus. In this study, we present histopathology mainly (but not exclusively) related to these 2 parasite species. Macroscopically, lesions associated with the presence of Anisakis spp. were characterised by the presence of ulcers within the gastric mucosa, while the digenean P. gastrophilus was found within large submucosal fibrotic nodules in the gastric wall. Anisakis-induced alterations included severe ulcerative gastritis with mixed inflammatory infiltrate often associated with colonies of bacteria, and mild to moderate granulomatous gastritis with eosinophilic infiltrate. P. gastrophilus-associated lesions were characterised by fibrogranulomatous gastritis with mixed inflammatory infiltrate. Additionally, immunohistochemical (IHC) analysis of P. gastrophilus lesions was consistent with the histopathologic findings, revealing inflammation-mediated stimulation. IHC-positive localisation of CD3+, iNOS+ and caspase-3+ cells suggests intensive accumulation of cytotoxic T-cells, proinflammatory cytokines and execution-phase of cell apoptosis at the parasitized area. In contrast, mechanical damage, rather than visible inflammatory response could be observed at the site of attachment of Braunina cordiformis recorded in 4 animals. Lesions not associated with the presence of parasites were mostly characterised by focal loss of superficial epithelial cells and accumulation of brown hemosiderin-like pigment or fibrous gastritis with lymphoplasmacytic infiltrate. In light of these results, we argue that observed 'tolerant' host-parasite interactions that led toward gastric lesions do not represent the cause of death and stranding of cetaceans included in this study.
[Mh] Termos MeSH primário: Golfinhos
Gastropatias/veterinária
Infecções por Trematódeos/veterinária
[Mh] Termos MeSH secundário: Animais
Anisaquíase/epidemiologia
Anisaquíase/patologia
Anisaquíase/veterinária
Anisakis
Feminino
Masculino
Mar Mediterrâneo/epidemiologia
Gastropatias/epidemiologia
Gastropatias/parasitologia
Gastropatias/patologia
Trematódeos/classificação
Trematódeos/isolamento & purificação
Infecções por Trematódeos/epidemiologia
Infecções por Trematódeos/parasitologia
Infecções por Trematódeos/patologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171013
[Lr] Data última revisão:
171013
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170725
[St] Status:MEDLINE
[do] DOI:10.3354/dao03137



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