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Microsporidia (2):
Recent article
Microsporidia
Abstract
Our results support a multifactorial etiology for PGI in which 'Ca. P. salmonis', an unidentified epitheliocyst agent, and the microsporidian are contributing causes. No evidence for the involvement of Atlantic salmon paramyxovirus in PGI development was identified in the present study. High water t...
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PMID: 21133320
PDF is available here.
PDF is available here.
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Folia Parasitologica (57)3 2010
Abstract
A new Microsporidium sp. infects Rhizophagus grandis Gyllenhall, a beetle which preys on the bark beetle Dendroctonus micans Kugellan in Turkey. Mature spores are single, uninucleate, oval in shape (3.75 +/- 0.27 microm in length by 2.47 +/- 0.13 microm in width), with a subapically fixed polar fila...
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PMID: 20941915
PDF is available here.
PDF is available here.
Aquatic Toxicology (98)1 2010
Abstract
Perfluorooctane sulfonate (PFOS) is the focus of intense toxicity research due to its persistence and widespread occurrence in biota. Studies on benthic invertebrates have shown them to be subjects of high PFOS exposure. However, effects on benthic invertebrates exposed to PFOS in the field are stil...
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PMID: 20211497
PDF is available here.
PDF is available here.
Abstract
We conducted three laboratory experiments designed to test if genetic variation in Daphnia magna populations and genetic variation in its parasites together influence the course of parasite spread after introduction. We found that a natural D. magna population exhibited variation in susceptibility t...
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PMID: 20503859
PDF is available here.
PDF is available here.
Abstract
To evaluate the bioaccumulation, retention and depuration rates of nine pathogens and surrogates when two oyster species were co-localized in tanks of seawater.
Crassostrea ariakensis (n = 52) and Crassostrea virginica (n = 52) were exposed to five virus types, two pr...
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PMID: 19735333
PDF is available here.
PDF is available here.
Parasitology (137)2 2010
Abstract
We present ultrastructural and molecular data indicating that these two parasites are in fact a single microsporidian species. This parasite shares numerous characteristics of Nosema spp. It forms elongate spores (cucumiform), developing in direct contact with host cell cytoplasm; all developmental...
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PMID: 19765341
PDF is available here.
PDF is available here.
Abstract
We found evidence for a partial but significant segregation of E. bieneusi ITS sequences according to host species. Host-specific segregation was confirmed by hierarchical analysis of molecular variation. To improve our understanding of the epidemiology of human microsporidiosis and strengthen the s...
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PMID: 19931647
PDF is available here.
PDF is available here.
Parazitologiya (44)4 2010
Abstract
A new microsporidian parasite of a freshwater fish Mesocottus haitej from the Amur River basin of Russia is described using light microscopy. The numerous whitish xenomas, round or oval, up to 3.0 mm large were found to be located in subcutaneous tissue of the body and mouth cavity, in the intestine...
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PMID: 21061594
PDF is available here.
PDF is available here.
Abstract
We conducted a study comprised of 4 separate experiments to determine the effects of husbandry stress on preexisting and experimental P. neurophilia infections and the subsequent effects on survival, infection onset and intensity, fish growth, and reproduction. In fish (AB strain) with preexisting i...
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PMID: 20183967
PDF is available here.
PDF is available here.
Abstract
Microsporidial stromal keratitis is rare. Conventional surgical treatment for such a condition has been penetrating keratoplasty. DALK may be considered an option for visual rehabilitation in these cases....
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PMID: 19574897
PDF is available here.
PDF is available here.
Zhongguo ji sheng chong xue yu ji sheng chong bing za zhi = Chinese journal of parasitology & parasitic diseases (27)2 2009
Abstract
This paper summarized the new hotspots in honeybee microsporidia, covering the progress on taxonomic status, infection mechanism, diagnosis method, epidemiological regularity and control.
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PMID: 19856511
PDF is available here.
PDF is available here.
Zhongguo ji sheng chong xue yu ji sheng chong bing za zhi = Chinese journal of parasitology & parasitic diseases (27)2 2009
Abstract
The microsporidia are obligate intracellular eukaryotic parasites. They have been paid more attention as being the emerging pathogen of human, so it is important to control microsporidiosis using fast and precise detecting technology. In order to provide a reference for controlling microsporidian in...
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PMID: 19856509
PDF is available here.
PDF is available here.
Abstract
The main objective of the present study was to determined the occurrence of Encephalitozoon intestinalis, E. hellem, E. cuniculi, and Enterocytozoon bieneusi in Poland in animal faecal using the FISH (Fluorescent In Situ Hybridization) and multiplex FISH techniques. Additional objectives included: (...
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PMID: 19579789
PDF is available here.
PDF is available here.
Genome Biology (10)10 2009
Abstract
The combination of the data presented here, together with the imminent annotated genome of Daphnia magna, will provide a wealth of genetic and genomic tools to study host-parasite interactions in an interesting model for pathogenesis....
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PMID: 19807911
PDF is available here.
PDF is available here.
Abstract
Abstract
We describe an intracellular pathogen isolated from wild-caught C. elegans that we show is a new species of microsporidia. Microsporidia comprise a large class of eukaryotic intracellular parasites that are medically and agriculturally important, but poorly understood. We show that microsporidian in...
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PMID: 19071962
PDF is available here.
PDF is available here.
Abstract
An observational study was carried out to establish the existence of intestinal microsporidiosis among patients with and without gastrointestinal symptoms in Hospital Universiti Kebangsaan Malaysia, Malaysia. A total of 893 faecal specimens from hospitalized patients were examined for microsporidia...
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PMID: 18602128
PDF is available here.
PDF is available here.
Abstract
The present study was designed to evaluate the efficiency of two serodiagnostic tests; the direct agglutination test (DAT) and the fast agglutination screening test (FAST) in the diagnosis of Microsporidia in experimentally infected mice and to differentiate between different species of the parasite...
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PMID: 19209773
PDF is available here.
PDF is available here.
Abstract
We identified putative gut symbionts and reproductive tract symbionts in M. occidentalis, as well as a microsporidian pathogen. A new phylogenetic analysis of the Bacteroidetes-Flavobacterium group suggests the unnamed Bacteroidetes in M. occidentalis is associated with the digestive tract. However,...
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PMID: 18696231
PDF is available here.
PDF is available here.
Abstract
Predatory mites of the family Phytoseiidae are valued natural enemies that provide effective pest control in greenhouses and on agricultural crops. Mass-reared phytoseiids are occasionally associated with microorganisms and although their effects are not always apparent, some are pathogenic and redu...
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PMID: 18726699
PDF is available here.
PDF is available here.
Abstract
Several species of phytoseiid mites (Acari: Phytoseiidae), including species of the genera Amblyseius, Galendromus, Metaseiulus, Neoseiulus, Phytoseiulus and Typhlodromus, are currently reared for biological control of various crop pests and/or as model organisms for the study of predator-prey inter...
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PMID: 18763041
PDF is available here.
PDF is available here.
Current Biology (18)21 2008
Abstract
We present evidence addressing this controversial question that is independent of sequence-based phylogenetic reconstruction, but rather based on genome structure. In the zygomycete basal fungal lineage, the sex locus is a syntenic gene cluster governing sexual reproduction in which a high mobility...
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PMID: 18976912
PDF is available here.
PDF is available here.
Current Biology (18)21 2008
Abstract
The evolutionary origins of the microsporidia, a group of intracellular eukaryotic pathogens, have been unclear. Genome analysis of a sex locus and other gene clusters has now revealed conserved synteny with zygomycete fungi, indicating that microsporidia are true fungi descended from a zygomycete a...
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PMID: 19000798
PDF is available here.
PDF is available here.
Acta Microbiologica Sinica (48)11 2008
Abstract
The core sequence of SSU rRNA of Vairimorpha ceraces with a length of 1228 nucleotides (GenBank EU267796) was successfully cloned and sequenced. Phylogenetic analysis showed that Vairimorpha ceraces was closer to the species of Vairimorpha sp. Germany (GenBank AF124331) and Vairimorpha imperfecta (G...
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PMID: 19149157
PDF is available here.
PDF is available here.
Abstract
We report an additional case of long-term persistence of Paranosema locustae in grasshoppers of Argentina. The pathogen was introduced from North America on rangeland at Loncopué, Neuquén province. Microsporidia were not detected in pre-introduction samples whereas infected grasshoppers were found...
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PMID: 18814843
PDF is available here.
PDF is available here.
Abstract
A microsporidium from Hippodamia convergens was transmitted horizontally to three non-target coccinellid hosts (Adalia bipunctata L., Coccinella septempunctata L. and Harmonia axyridis Pallas) under laboratory conditions. For all species examined, microsporidia-infected larvae took significantly lon...
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PMID: 18809408
PDF is available here.
PDF is available here.
Abstract
A cell culture of microsporidia was established from a stool sample. This protocol is important to isolate and maintain additional native Colombian strains and it will contribute to biochemical, immunological and epidemiological studies of the currently established strain....
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PMID: 19034367
PDF is available here.
PDF is available here.
Ecology Letters (11)9 2008
Abstract
We followed the spread of a microsporidian parasite in semi-natural outdoor Daphnia magna populations of low and high genetic diversity. We used randomly selected, naturally occurring host genotypes. Host populations of low diversity were initially monoclonal, while the host populations of high dive...
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PMID: 18479453
PDF is available here.
PDF is available here.
Abstract
An expression library was created and 2304 clones sequenced from a monogyne colony of Solenopsis invicta. The primary intention of the project was to utilize homologous gene identification to facilitate discovery of viruses infecting this ant pest that could potentially be used in pest management. A...
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PMID: 18329665
PDF is available here.
PDF is available here.
Abstract
The microsporidium Heterovesicula cowani, discovered in 1985, was initially identified as Vairimorpha sp. because it produces two types of spores: Nosema-like diplokaryotic spores and Thelohania-like mononuclear meiospores. However, light and electron microscopy studies revealed characters that did...
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PMID: 18374939
PDF is available here.
PDF is available here.
Abstract
Vertical transmission and the overwintering success of three different microsporidia infecting Lymantria dispar (Lepidoptera: Lymantriidae) larvae were investigated. Endoreticulatus schubergi, a midgut pathogen, was transmitted to offspring via female and male via the egg chorion (transovum transmis...
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PMID: 18439619
PDF is available here.
PDF is available here.
Abstract
We found an overall higher proportion of male offspring in infected than in uninfected hosts. In young males, there was no parasite effect on sperm production, but, later in life, infected males produced significantly less sperm than uninfected controls. This shows that infected males are fertile. A...
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PMID: 18190917
PDF is available here.
PDF is available here.
Abstract
Abstract
We established three mouse monoclonal antibodies (MAb1, MAb2, and MAb4) against E. cuniculi PTP1. An enzyme-linked immunosorbent assay (ELISA) indicated that all three MAbs reacted with the outer surface of extruded polar tubes and that they also strongly bound to an intracellular antigen in infecte...
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PMID: 18582207
PDF is available here.
PDF is available here.
Abstract
In this small case series of patients with undiagnosed keratitis, femtosecond-assisted diagnostic corneal biopsy (FAB) obtained adequate specimens without intra- or early post-operative complications, related to the procedure....
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PMID: 18322693
PDF is available here.
PDF is available here.
Parasitology (135)6 2008
Abstract
We modified previously described methods of DNA extraction and PCR conditions for identification of microsporidia from museum slides, clinical specimens and environmental samples and successfully identified Vittaforma corneae in 11 out of 13 cases of microsporidial infection from used trichrome-stai...
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PMID: 18442428
PDF is available here.
PDF is available here.
Abstract
We performed a comparison of transcription profiles in two microsporidian species, A. locustae and Encephalitozoon cuniculi. Transcription overlap was characterized at many A. locustae loci representing a range of gene densities, to determine if overlapping transcription correlates with the length o...
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PMID: 18280697
PDF is available here.
PDF is available here.
Abstract
We provide experimental insights into the metabolic function and localization of these proteins. We cloned, functionally characterized and localized homologues of several central mitochondrial Fe-S cluster assembly components for the microsporidians Encephalitozoon cuniculi and Trachipleistophora ho...
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PMID: 18311129
PDF is available here.
PDF is available here.
Abstract
Fertilized eggs collected from broodfish infected by Ovipleistophora ovariae were tested by quantitative polymerase chain reaction (PCR) and found to be positive for the O. ovariae genome at 7.77 X 10(2) to 3.26 x 10(7) copies per microgram of host DNA. Fry hatched from these eggs contained from 1.3...
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PMID: 18536502
PDF is available here.
PDF is available here.
Abstract
The interaction between two pathogens, the microsporidian Paranosema locustae Canning and the fungus Metarhizium anisopliae var. acridum Driver and Milner was studied under laboratory conditions in an attempt to develop an improved method of microbial control for the desert locust, Schistocerca greg...
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PMID: 18005982
PDF is available here.
PDF is available here.
Abstract
I (JH I) was also detected in day two and day seven sixth instar infected larvae but was not detected in non-infected larvae. The duration of the fifth and sixth stadia was significantly longer for infected larvae when compared with non-infected larvae. No evidence was found to suggest that supernum...
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PMID: 18048053
PDF is available here.
PDF is available here.
Journal of Molecular Biology (375)5 2008
Abstract
We report the characterization of a mitochondrial carrier protein in the microsporidian Antonospora locustae and demonstrate that the protein is heterologously targeted to mitochondria in Saccharomyces cerevisiae. The protein is phylogenetically allied to the NAD(+) transporter of S. cerevisiae, but...
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PMID: 18078956
PDF is available here.
PDF is available here.
Abstract
Abstract
Abstract
A rhamnose-binding lectin, named SFL, was isolated from the eggs of ayu (sweet fish, Plecoglossus altivelis) by affinity and ion-exchange chromatographies. SFL revealed 287 amino acid residues with 3 tandemly repeated domains, and contained 8 half-Cys residues in each domain. The lectin was shown to...
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PMID: 17997156
PDF is available here.
PDF is available here.
Parasite Immunology (30)1 2008
Abstract
We recently detected anti-E. cuniculi PT immunoglobulin (Ig) M antibodies in sera from many healthy individuals. The present one-dimensional (1-D) immunoblot analysis predominantly detected a band at 52 kDa in all of the examined human sera with anti-PT IgM. The use of mouse monoclonal antibody conf...
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PMID: 18086012
PDF is available here.
PDF is available here.
BMC Genomics (9)1 2008
Abstract
The spore transcriptomes of A. locustae and E. aedis were compared and the numbers of unique transcripts that belong to each COG (Clusters of Orthologous Groups of proteins) category differ by at most 5%. The transcripts themselves have widely varying start sites and encode a number of proteins that...
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PMID: 18570666
PDF is available here.
PDF is available here.
BMC Genomics (9) 2008
Abstract
Here we have undertaken genome sequence surveys of two diverse microsporidia, Brachiola algerae and Edhazardia aedis. In both species we find very large intergenic regions, many transposable elements, and a low gene-density, all in contrast to the small, model microsporidian genomes. We also find no...
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PMID: 18445287
PDF is available here.
PDF is available here.
Parazitologiya (42)2 2008
Abstract
The ecology and epizootology of Microsporidia were studied in the natural population of malarial mosquitoes from Western Siberia over a 30-year period. Symptoms of the disease, host specificity and character of parasite localization in host tissues were investigated. Microsporidia of 9 species from...
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PMID: 18664069
PDF is available here.
PDF is available here.
Abstract
A new microsporidian species, Euplotespora binucleata n. gen., n. sp., from the brackish-water ciliate Euplotes woodruffi is described and defined on the basis of life history characteristics, light and electron microscopic features, and small subunit (SSU) ribosomal DNA (rDNA) sequencing. The life...
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PMID: 18460159
PDF is available here.
PDF is available here.
Parasitology Research (101)6 2007
Abstract
The study demonstrated that the resuspension of bottom sediments caused by bathers and their direct microbial input resulted in elevated levels of Cryptosporidium parvum oocysts, Giardia lamblia cysts, and microsporidian spores, particularly Enterocytozoon bieneusi, in recreational beach water on da...
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PMID: 17823816
PDF is available here.
PDF is available here.
Abstract
I studied whether the presence of conspecifics alters the probability of an uninfected susceptible recipient Daphnia becoming infected by a microparasite and if this effect depends on whether the added conspecifics themselves are susceptible or resistant to infection. The presence of both susceptibl...
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PMID: 17657511
PDF is available here.
PDF is available here.
Abstract
Infection of Aedes aegypti (L.) (Diptera: Culicidae) with Edhazardia aedis (Microsporidia: Culicosporidae) reduced mean human host attraction and landing/probing rates in female mosquitoes by 53 and 62%, respectively, compared with rates in microsporidia-free females. Infection with E. aedis reduced...
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PMID: 18047204
PDF is available here.
PDF is available here.
Abstract
Comparative small subunit rDNA sequence analyses, indicate that Ovavesicula popilliae, a microsporidian parasite of the Japanese beetle, Popillia japonica, represents a distant sister group to Paranosema and Antonospora. These three genera represent a second major group (the Nosema/Vairimorpha clade...
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PMID: 17599347
PDF is available here.
PDF is available here.
Abstract
Random amplification of polymorphic DNA polymerase chain reaction (RAPD-PCR) and pathological, morphological and ultrastructural characterization were used to differentiate seven new microsporidian isolates infecting the mulberry silkworm, Bombyx mori. The pathogenicity observed was dose-dependent a...
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PMID: 17619019
PDF is available here.
PDF is available here.
Abstract
We test whether outbred offspring of Daphnia magna have an advantage over selfed offspring in the presence of a parasite transmitted from mothers to offspring. Using outdoor mesocosms, we set up monoclonal and polyclonal host populations of D. magna infected with a prevalence of 100% with the horizo...
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PMID: 17456451
PDF is available here.
PDF is available here.
Parasitology Research (101)5 2007
Abstract
We developed a nonradioactive in situ hybridization (ISH) method. The new method was then used to detect N. salmonis among Chinook salmon after both natural and experimental exposures to the parasite. Probes derived from the small subunit ribosomal DNA (ssu-rDNA) sequence of the microsporidium were...
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PMID: 17605006
PDF is available here.
PDF is available here.
Parasitology (134)Pt 11 2007
Abstract
We describe the occurrence of a microsporidian parasite in female-biased populations of an intertidal amphipod, Corophium volutator (Pallas), at mudflat sites in the Bay of Fundy, Canada. Sequence data for the parasite's 16S rDNA indicate that it is a novel microsporidian species. This parasite was...
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PMID: 17559711
PDF is available here.
PDF is available here.
Abstract
Parasitology Research (101)4 2007
Abstract
We succeeded in detecting the mechanisms of infection and intrusion of this eukaryotic organism, growing within the nucleus of the FLA, by light and electron microscopy. It could be shown that the spores at the cell membrane of strain KAun1 resemble Microsporidia and were taken up into the Amoeba by...
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PMID: 17579885
PDF is available here.
PDF is available here.