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https://www.readbyqxmd.com/read/28331963/study-of-loma-acerinae-microsporidia-detected-from-three-ponto-caspian-gobies-gobiidae-in-ukraine
#1
Mykola Ovcharenko, Piotr Wróblewski, Yuriy Kvach, Oleksandra Drobiniak
A previously recognized Glugea-belonging Microsporidia (G. melanostomi, G. markievichi, G. naidenovi) were found in the intestinal mucosa of Neogobius melanostomus, N. fluviatilis, and Proterorhinchus semilunaris (Teleostei, Gobiidae) from lower Dnieper River and Black Sea coastal inlets, Ukraine. Light microscope observations demonstrated small spherical xenomes about 0.35 mm in diameter filled by developmental stages of parasites. Mature spores were ellipsoidal, slightly narrowed at anterior pole, sometimes ovoid or elongate in shape approximately 3...
March 23, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28321967/comparative-analysis-of-the-proteins-with-tandem-repeats-from-8-microsporidia-and-characterization-of-a-novel-endospore-wall-protein-colocalizing-with-polar-tube-from-nosema-bombycis
#2
Ying Wang, Huixia Geng, Xiaoqun Dang, Heng Xiang, Tian Li, Guoqing Pan, Zeyang Zhou
As a common feature of eukaryotic proteins, tandem amino acid repeat has been studied extensively in both animal and plant proteins. Here, a comparative analysis focusing on the proteins having tandem repeats was conducted in 8 microsporidia, including four mammal-infecting microsporidia (Encephalitozoon cuniculi, Encephalitozoon intestinalis, Encephalitozoon hellem and Encephalitozoon bieneusi) and four insect-infecting microsporidia (Nosema apis, Nosema ceranae, Vavraia culicis and Nosema bombycis). We found that the proteins with tandem repeats were abundant in these species...
March 21, 2017: Journal of Eukaryotic Microbiology
https://www.readbyqxmd.com/read/28277606/a-novel-spore-wall-protein-from-antonospora-locustae-microsporidia-nosematidae-contributes-to-sporulation
#3
Longxin Chen, Runting Li, Yinwei You, Kun Zhang, Long Zhang
Microsporidia are obligate intracellular parasites, existing in a wide variety of animal hosts. Here, we reported AlocSWP2, a novel protein identified from the spore wall of Antonospora locustae (formerly, Nosema locustae, and synonym, Paranosema locustae), containing four cysteines that are conserved among the homologues of several Microspodian pathogens in insects and mammals. AlocSWP2 was detected in the wall of mature spores via indirect immunofluorescence assay. In addition, immunocytochemistry localization experiments showed that the protein was observed in the wall of sporoblasts, sporonts, and meronts during sporulation within the host body, also in the wall of mature spores...
March 9, 2017: Journal of Eukaryotic Microbiology
https://www.readbyqxmd.com/read/28255818/screening-of-protozoan-and-microsporidian-parasites-in-feces-of-great-cormorant-phalacrocorax-carbo
#4
Piotr Rzymski, Anna Słodkowicz-Kowalska, Piotr Klimaszyk, Piotr Solarczyk, Barbara Poniedziałek
The global population of great cormorants (Phalacrocorax carbo L.) is on the rise. These birds, characterized by rapid metabolism, can deposit large quantities of feces, and because they breed on the land but forage on water, both terrestrial and aquatic environments can be simultaneously affected by their activities. The contribution of great cormorants in the dispersal of bacterial and viral pathogens has been immensely studied; whereas, the occurrence of eukaryotic parasites such as protozoans and microsporidians in these birds is little known...
March 2, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28249569/unity-in-defence-honeybee-workers-exhibit-conserved-molecular-responses-to-diverse-pathogens
#5
Vincent Doublet, Yvonne Poeschl, Andreas Gogol-Döring, Cédric Alaux, Desiderato Annoscia, Christian Aurori, Seth M Barribeau, Oscar C Bedoya-Reina, Mark J F Brown, James C Bull, Michelle L Flenniken, David A Galbraith, Elke Genersch, Sebastian Gisder, Ivo Grosse, Holly L Holt, Dan Hultmark, H Michael G Lattorff, Yves Le Conte, Fabio Manfredini, Dino P McMahon, Robin F A Moritz, Francesco Nazzi, Elina L Niño, Katja Nowick, Ronald P van Rij, Robert J Paxton, Christina M Grozinger
BACKGROUND: Organisms typically face infection by diverse pathogens, and hosts are thought to have developed specific responses to each type of pathogen they encounter. The advent of transcriptomics now makes it possible to test this hypothesis and compare host gene expression responses to multiple pathogens at a genome-wide scale. Here, we performed a meta-analysis of multiple published and new transcriptomes using a newly developed bioinformatics approach that filters genes based on their expression profile across datasets...
March 2, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28230483/studying-microparasites-of-the-phyla-myxozoa-and-microsporidia-infecting-fish-the-ultrastructural-contribution
#6
Sónia Rocha, Graça Casal, Carlos Azevedo
No abstract text is available yet for this article.
January 2017: Ultrastructural Pathology
https://www.readbyqxmd.com/read/28228409/clinical-and-demographic-study-of-microsporidial-keratoconjunctivitis-in-south-india-a-3-year-study-2013-2015
#7
Rohan Agashe, Naveen Radhakrishnan, Sayali Pradhan, Muthiah Srinivasan, Venkatesh N Prajna, Prajna Lalitha
AIM: To study the demographic profile, clinical features, treatment outcome and ocular morbidity of smear-positive microsporidial keratoconjunctivitis. METHODS: Retrospective case series of all patients with clinical features of microsporidial keratoconjunctivitis and who were smear positive for the same on Gram stain from January 2013 to December 2015. Demographic data, predisposing factors, microbiological investigations, clinical course and visual outcome were analysed...
February 22, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28219500/microsporidia-sequestered-in-corneal-stroma-for-years
#8
Joveeta Joseph, Somasheila Murthy, Savitri Sharma
No abstract text is available yet for this article.
March 2017: Ophthalmology
https://www.readbyqxmd.com/read/28205456/histochemical-study-of-encephalitozoon-cuniculi-spores-in-the-kidneys-of-naturally-infected-new-zealand-rabbits
#9
Luis E Rodríguez-Tovar, Alejandra Villarreal-Marroquín, Alicia M Nevárez-Garza, Uziel Castillo-Velázquez, Heidi G Rodríguez-Ramírez, Magda C Navarro-Soto, Juan J Zárate-Ramos, Gustavo Hernández-Vidal, Armando Trejo-Chávez
Encephalitozoon cuniculi is an important microsporidian pathogen that is considered an emergent, zoonotic, and opportunistic. It infects both domestic and laboratory rabbits, generating severe chronic interstitial and granulomatous nephritis with fibrosis and granulomatous encephalitis. Encephalitozoonosis is diagnosed in paraffin-embedded sections by examining the spores in the host tissues. The spores are difficult to observe when the samples are stained with hematoxylin and eosin (H&E), particularly when there is an inflammatory reaction and tissue damage...
February 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28199765/survey-for-zoonotic-microsporidian-pathogens-in-wild-living-urban-rooks-corvus-frugilegus
#10
Agnieszka Perec-Matysiak, Maria Wesołowska, Kinga Leśniańska, Katarzyna Buńkowska-Gawlik, Joanna Hildebrand, Marta Kicia
Microsporidia are opportunistic pathogens in nature infecting all animal phyla. There is a potential risk of microsporidian spores transmission from urban rooks inhabiting some metropolitan cities to people through casual interactions. The aim of this study was to identify microsporidia species in the droppings of rooks in Wroclaw, Poland. A total of 15 collective sets of droppings were examined using nested-PCR method. Amplification of ITS rRNA gene revealed the presence of Enterocytozoon bieneusi D, Peru 6 and Encephalitozoon hellem 1A genotypes...
February 15, 2017: Journal of Eukaryotic Microbiology
https://www.readbyqxmd.com/read/28199389/correction-a-large-collection-of-novel-nematode-infecting-microsporidia-and-their-diverse-interactions-with-caenorhabditis-elegans-and-other-related-nematodes
#11
(no author information available yet)
[This corrects the article DOI: 10.1371/journal.ppat.1006093.].
February 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28171733/microsporidiosis-in-four-tortoises-testudo-hermanni-boettgeri
#12
M Eydner, J Donhauser, A Beineke, P Guenther, S Blahak
Microsporidia are obligate intracellular, spore-forming fungi. A wide range of vertebrate and invertebrate hosts can be infected; however, cases of infected turtles or tortoises have not yet been described. This is the first description of 4 cases in tortoises ( Testudo spp), which showed general signs of illness as well as intestinal and respiratory signs until death occurred or they were euthanized. Granulomatous and necrotizing inflammation was visible in the lung and liver. Fungal organisms were present in heart blood, lung, liver, and intestine...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28152065/microsporidia-infection-impacts-the-host-cell-s-cycle-and-reduces-host-cell-apoptosis
#13
Raquel Martín-Hernández, Mariano Higes, Soledad Sagastume, Ángeles Juarranz, Joyce Dias-Almeida, Giles E Budge, Aránzazu Meana, Neil Boonham
Intracellular parasites can alter the cellular machinery of host cells to create a safe haven for their survival. In this regard, microsporidia are obligate intracellular fungal parasites with extremely reduced genomes and hence, they are strongly dependent on their host for energy and resources. To date, there are few studies into host cell manipulation by microsporidia, most of which have focused on morphological aspects. The microsporidia Nosema apis and Nosema ceranae are worldwide parasites of honey bees, infecting their ventricular epithelial cells...
2017: PloS One
https://www.readbyqxmd.com/read/28115231/molecular-detection-and-species-identification-of-enterocytozoon-bieneusi-isolated-from-immunocompetent-orang-asli-in-malaysia
#14
Azah Ashikin, Hesham M Al-Mekhlafi, Norhayati Moktar, Tengku Shahrul Anuar
Most studies of opportunistic infections focus on immunocompromised patients. However, there is a lack of information on microsporidiosis in healthy people (immunocompetent) worldwide. This study aimed to detect and identify microsporidia species in immunocompetent Orang Asli living in Pahang, Malaysia. Orang Asli is a collective term for a group of indigenous people that usually reside in the interior regions of Peninsular Malaysia. They comprise about 0.7% of the total population in Malaysia and 76% of them lived below the poverty line i...
April 2017: Parasitology International
https://www.readbyqxmd.com/read/28111712/morphological-characterization-and-hsp70-igs-based-phylogenetic-analysis-of-two-microsporidian-parasites-isolated-from-antheraea-pernyi
#15
Yong Wang, Yutao Ru, Wei Liu, Deyi Wang, Jinglin Zhou, Yiren Jiang, Shenglin Shi, Li Qin
Two microsporidian isolates were extracted from single infected egg-laying tussah silk moth (Antheraea pernyi) in Liaoning Province, China. The microsporidia were subsequently grown in silk moth larvae, isolated, and subjected to morphological characterization (by light and transmission electron microscopy) and phylogenetic analysis (based on conserved genes). One type of spore was long-axis-oval in shape, measuring 4.71 × 1.95 μm, and the other type was short-axis-oval, measuring 3.64 × 2.17 μm. These dimensions were markedly different from those reported in the spores of the common microsporidia infecting A...
January 22, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28096853/microsporidial-spores-in-fecal-samples-of-some-domesticated-animals-living-in-giza-egypt
#16
Ahmad Z Al-Herrawy, Mahmoud A Gad
BACKGROUND: The aim of the present work was to investigate the prevalence and species of intestinal microsporidiosis among animals in Giza, Egypt. METHODS: A total of 869 animal fecal samples were collected from domesticated animals (dogs, cats, rabbits, cattle, buffaloes, sheep, goats, donkeys and pigs) living in Giza, Egypt. Spores of microsporidia were concentrated from collected samples by centrifugation and finally stained with modified trichrome (MT) stain to detect microsporidial spores...
April 2016: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28067236/identification-of-microsporidia-host-exposed-proteins-reveals-a-repertoire-of-rapidly-evolving-proteins
#17
Aaron W Reinke, Keir M Balla, Eric J Bennett, Emily R Troemel
Pathogens use a variety of secreted and surface proteins to interact with and manipulate their hosts, but a systematic approach for identifying such proteins has been lacking. To identify these 'host-exposed' proteins, we used spatially restricted enzymatic tagging followed by mass spectrometry analysis of Caenorhabditis elegans infected with two species of Nematocida microsporidia. We identified 82 microsporidia proteins inside of intestinal cells, including several pathogen proteins in the nucleus. These microsporidia proteins are enriched in targeting signals, are rapidly evolving and belong to large Nematocida-specific gene families...
January 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/28031263/interaction-between-swp9-and-polar-tube-proteins-of-the-microsporidian-nosema-bombycis-and-function-of-swp9-as-a-scaffolding-protein-contribute-to-polar-tube-tethering-to-the-spore-wall
#18
Donglin Yang, Lixia Pan, Pai Peng, Xiaoqun Dang, Chunfeng Li, Tian Li, Mengxian Long, Jie Chen, Yujiao Wu, Huihui Du, Bo Luo, Yue Song, Rui Tian, Jie Luo, Zeyang Zhou, Guoqing Pan
All microsporidia possess a unique, highly specialized invasion mechanism that involves the polar tube and spore wall. The interaction between spore wall proteins (SWPs) and polar tube proteins (PTPs) in the formation, arrangement, orderly orientation, and function of the polar tube and spore wall remains to be determined. This study was undertaken to examine the protein interactions of Nosema bombycis SWP7 (NbSWP7), NbSWP9, and PTPs. Coimmunoprecipitation, liquid chromatography-tandem mass spectrometry (LC-MS/MS), and yeast two-hybrid data demonstrated that NbSWP9, but not NbSWP7, interacts with NbPTP1 and NbPTP2...
March 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28030354/phylogenetic-analysis-of-genetically-distinct-enterocytozoon-bieneusi-infecting-renal-transplant-recipients
#19
Sonali Khanduja, Ujjala Ghoshal, Uday C Ghoshal
Enterocytozoon bieneusi (E. bieneusi), infecting renal transplant (RT) recipients may be transmitted anthroponotically or zoonotically. Accordingly, we aimed to, a) evaluate genotypes of E. bieneusi ínfecting RT recipients, and b) infer phylogenetic interpretation on transmission of different genotypes among infected hosts. Stool samples of 22 RT recipients infected with microsporidia (identified using modified trichrome staining) were subjected to species identification. All E. bieneusi positive samples were subjected to genotyping...
March 1, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/27995672/biofilms-for-monitoring-presence-of-microsporidia-in-environmental-water
#20
Joseph A Moss, Richard A Snyder
The development of molecular methodologies for targeting pathogens such as the Microsporidia has greatly improved our monitoring capabilities and initiatives. This study analyzed samples collected from 5 locations in Pensacola, Florida, USA for the presence of Microsporidian pathogens. To circumvent various impediments associated with water collection and filtration, we utilized biofilms as sentinels for detection of Microsporidia. We implemented membrane-dissolution and sample purification in a single confined step followed by real-time PCR to confirm pathogen presence...
December 20, 2016: Journal of Eukaryotic Microbiology
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