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https://www.readbyqxmd.com/read/29661263/a-new-microsporidium-percutemincola-moriokae-gen-nov-sp-nov-from-oscheius-tipulae-a-novel-model-of-microsporidia-nematode-associations
#1
Kenji Nishikori, Davin H E Setiamarga, Takahiro Tanji, Eisuke Kuroda, Hirohisa Shiraishi, Ayako Ohashi-Kobayashi
Here, we describe a new microsporidium Percutemincola moriokae gen. nov., sp. nov., which was discovered in the intestinal and hypodermal cells of a wild strain of the nematode Oscheius tipulae that inhabits in the soil of Morioka, Iwate Prefecture, Japan. The spores of Pe. moriokae had an average size of 1.0 × 3.8 µm and 1.3 × 3.2 µm in the intestine and hypodermis, respectively, and electron microscopy revealed that they exhibited distinguishing features with morphological diversity in the hypodermis...
April 17, 2018: Parasitology
https://www.readbyqxmd.com/read/29659738/disseminated-infection-of-encephalitozoon-cuniculi-associated-with-osteolysis-of-hip-periprosthetic-tissue
#2
Marta Kicia, Maria Wesolowska, Zaneta Kopacz, Martin Kvác, Bohumil Sak, Magdalena Sokulska, Kamil Cebulski, Andrzej B Hendrich, Andrzej Pozowski
Background: Among patients with hip joint endoprosthesis, periprosthetic osteolysis is the most common complication following primary arthroplasty, and subsequent implant loosening is the leading cause of arthroplasty revision. Causes of stability loss, though not always evident, can be mechanical, allergic, or infectious (bacterial and fungal agents) in nature. Microsporidia, widespread opportunistic fungal pathogens that infect most human tissues, are a potential infectious cause of stability loss...
April 5, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29627259/molecular-and-phylogenetic-evidences-of-dispersion-of-human-infecting-microsporidia-to-vegetable-farms-via-irrigation-with-treated-wastewater-one-year-follow-up
#3
Ehsan Javanmard, Hamed Mirjalali, Maryam Niyyati, Esfandiar Jalilzadeh, Seyed Javad Seyed Tabaei, Hamid Asadzadeh Aghdaei, Ehsan Nazemalhosseini-Mojarad, Mohammad Reza Zali
BACKGROUND: Human-infecting microsporidia are a group of spore-forming eukaryotic microorganisms that can infect both animals and humans. Recent evidences indicate waterborne transmission of microsporidia spores to human via either drinking water or irrigation of vegetable farms with contaminated water resources. The current study aimed to evaluate the presence of human-infecting microsporidia in treated wastewater (TW) and vegetable farms irrigated with treated wastewater during a year...
March 16, 2018: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/29615690/porphyrins-inactivate-nosema-spp-microsporidia
#4
Aneta A Ptaszyńska, Mariusz Trytek, Grzegorz Borsuk, Katarzyna Buczek, Katarzyna Rybicka-Jasińska, Dorota Gryko
The study of organic/inorganic molecules with activity against intracellular fungi of the phylum Microsporidia is of critical importance. Here, for the first time, the inactivation of these parasitic fungi by porphyrins is reported. The biological effects of porphyrins (10 µM and 100 µM) on the microsporidian Nosema ceranae was investigated in honeybee hosts using cage experiments. A significant reduction in the number of spores (from 2.6 to 5 fold) was observed in Nosema-infected honeybees with a sucrose-protoporphyrin amide [PP(Asp)2 ] syrup diet compared to the control honeybees...
April 3, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29603494/clarifying-the-relationships-between-microsporidia-and-cryptomycota
#5
David Bass, Lucas Czech, Bryony Williams, Cédric Berney, Micah Dunthorn, Frederic Mahé, Guifré Torruella, Grant D Stentiford, Tom A Williams
Some protists with microsporidian-like cell biological characters, including Mitosporidium, Paramicrosporidium, and Nucleophaga, have SSU rRNA gene sequences that are much less divergent than canonical Microsporidia. We analysed the phylogenetic placement and environmental diversity of microsporidian-like lineages that group near the base of the fungal radiation and showed that they group in a clade with metchnikovellids and canonical microsporidians to the exclusion of the clade including Rozella, in line with what is currently known of their morphology and cell biology...
March 30, 2018: Journal of Eukaryotic Microbiology
https://www.readbyqxmd.com/read/29587846/evaluation-of-two-dna-extraction-methods-for-the-pcr-based-detection-of-eukaryotic-enteric-pathogens-in-fecal-samples
#6
Estelle Menu, Charles Mary, Isabelle Toga, Didier Raoult, Stéphane Ranque, Fadi Bittar
OBJECTIVE: Efficient and easy-to-use DNA extraction and purification methods are critical in implementing PCR-based diagnosis of pathogens. In order to optimize the routine clinical laboratory diagnosis of eukaryotic enteric pathogens, we compare, via quantitative PCR cycle threshold (Ct) values, the efficiency of two DNA extraction kits: the semi-automated EZ1® (Qiagen) and the manual QIAamp® DNA Stool Mini Kit (Qiagen), on six protozoa: Blastocystis spp., Cryptosporidium parvum/hominis, Cyclospora cayetanensis, Dientamoeba fragilis, Giardia intestinalis and Cystoisospora belli and one microsporidia: Enterocytozoon bieneusi...
March 27, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29578312/group-specific-environmental-sequencing-reveals-high-levels-of-ecological-heterogeneity-across-the-microsporidian-radiation
#7
Bryony A P Williams, Kristina M Hamilton, Meredith D Jones, David Bass
The description of diversity is a key imperative in current biological studies and has been revolutionised by the molecular era that allows easy access to microbial diversity not visible to the naked eye. Broadly-targeted SSU rRNA gene amplicon studies of diverse environmental habitats continue to reveal new microbial eukaryotic diversity. However, some eukaryotic lineages, particularly parasites, have divergent SSU sequences, and are therefore undersampled or excluded by the methodologies used for SSU studies...
March 26, 2018: Environmental Microbiology Reports
https://www.readbyqxmd.com/read/29570921/confirmed-microsporidial-graft-infection-in-a-hiv-negative-renal-transplant-recipient-a-case-report-and-review-of-the-literature
#8
M Brown, A Longano, C Dendle, K R Polkinghorne, J Kanellis
Microsporidia are intracellular organisms most commonly known to cause opportunistic infection in patients with human immunodeficiency virus (HIV). There have been several case reports of infection in solid organ and bone marrow transplant recipients. Here, we report a case of a non-HIV-infected renal transplant patient with microsporidiosis of the renal tract associated with acute graft dysfunction. We also review the literature of twelve previously reported cases of microsporidiosis in patients with renal transplants who had described graft involvement...
March 23, 2018: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/29565251/presence-of-selected-pathogens-on-the-gills-of-five-wrasse-species-in-western-norway
#9
A Steigen, A Nylund, H Plarre, K Watanabe, E Karlsbakk, Ø Brevik
The objective of this study was to identify gill pathogens in Labridae (wrasse) species used as cleaner fish to control salmon louse in western Norwegian aquaculture. Wrasse are often moved over long distances, raising issues of fish health, welfare and pathogen transmission. Histological examination and real-time RT-PCR analysis of the gills from Centrolabrus exoletus, Ctenolabrus rupestris, Labrus bergylta, L. mixtus and Symphodus melops revealed several pathogens: a new species of Ichthyobodo, Paramoeba perurans, microsporidia, trichodinids, Hatschekia spp...
March 22, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29530076/identification-characterization-and-heparin-binding-capacity-of-a-spore-wall-virulence-protein-from-the-shrimp-microsporidian-enterocytozoon-hepatopenaei-ehp
#10
Pattana Jaroenlak, Dominic Wiredu Boakye, Rapeepun Vanichviriyakit, Bryony A P Williams, Kallaya Sritunyalucksana, Ornchuma Itsathitphaisarn
BACKGROUND: The microsporidian Enterocytozoon hepatopenaei (EHP) is a spore-forming, intracellular parasite that causes an economically debilitating disease (hepatopancreatic microsporidiosis or HPM) in cultured shrimp. HPM is characterized by growth retardation and wide size variation that can result in economic loss for shrimp farmers. Currently, the infection mechanism of EHP in shrimp is poorly understood, especially at the level of host-parasite interaction. In other microsporidia, spore wall proteins have been reported to be involved in host cell recognition...
March 12, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29522765/the-roles-of-microsporidia-spore-wall-proteins-in-the-spore-wall-formation-and-polar-tube-anchorage-to-spore-wall-during-development-and-infection-processes
#11
Donglin Yang, Lixia Pan, Zhongzhu Chen, Huihui Du, Bo Luo, Jie Luo, Guoqing Pan
Microsporidia are highly specialized obligate intracellular, spore forming divergent fungi with a wide variety host range that includes most vertebrates and invertebrates. The resistant spores are surrounded by a rigid cell wall which consists of three layers: the electron-lucent chitin and protein inner endospore, the outer-electron-dense and mainly proteinaceous exospore and plasma membrane. Interestingly, microsporidia owns a special invasion organelle, called polar tube, coiled within the interior of the spore wall and attached to anchoring disk at the anterior end of spore...
April 2018: Experimental Parasitology
https://www.readbyqxmd.com/read/29510742/molecular-and-biochemical-responses-in-the-midgut-of-the-silkworm-bombyx-mori-infected-with-nosema-bombycis
#12
Zhi Li, Yu Wang, Linling Wang, Zeyang Zhou
BACKGROUND: Microsporidia are a group of eukaryotic intracellular parasites that infect almost all vertebrates and invertebrates. However, there is little information available of how microsporidia obtain nutrients and energy from host cells. The purpose of this study was to investigate the energy and material requirements of Nosema bombycis for the invasion procedure through analyzing the global variation of the gene expression, protein abundance, fatty acids level and ATP flux induced by the microsporidia N...
March 6, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29492660/biological-and-molecular-features-of-nosema-rachiplusiae-sp-n-a-microsporidium-isolated-from-the-neotropical-moth-rachiplusia-nu-guen%C3%A3-e-lepidoptera-noctuidae
#13
Joel D Arneodo, Alicia Sciocco-Cap
Light, electron microscopy and DNA analyses were performed to characterize a microsporidium infecting Rachiplusia nu larvae from a laboratory rearing in Argentina. Diplokaryotic spores were oval and measured 3.61 ± 0.29 × 1.61 ± 0.14 μM (fresh). The spore wall was composed of an electron-dense exospore and an electron-lucent endospore, ca. 30 nm and 100-120 nm thick, respectively. The polar filament was arranged in a single rank of 10-12 coils (typically 11). Microsporidian cells were found in the cytoplasm, next to the endoplasmic reticulum (especially the prespore stages) and generally surrounded by electron-lucent spaces...
February 28, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29491564/molecular-diagnosis-of-microsporidia-strains-in-slaughtered-cows-of-southwest-of-iran
#14
Elham Kord-Sarkachi, Mehdi Tavalla, Moluok Beiromvand
Microsporidia is often considered as an opportunistic infection in patients with impaired immune systems such as patients with acquired immune deficiency syndrome, transplant recipients, children and old people. Due to the ability of the parasite to transmit from animals to human as well as the increasing prevalence of parasitic infections and immune deficiency diseases; therefore, the aim of this study was to evaluate molecular diagnosis of microsporidia strains in slaughtered cows of southwest of Iran. Initially, 256 stool samples of cows were collected from 5 regions of Khuzestan province, southwest of Iran and stained by modified trichrome (weber)...
March 2018: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/29476340/correction-to-a-new-microsporidium-fibrillaspora-daphniae-g-n-sp-n-infecting-daphnia-magna-crustacea-cladocera-in-siberia-and-its-taxonomic-placing-within-a-new-family-fibrillasporidae-and-new-superfamily-tubulinosematoidea-opisthosporidia-microsporidia
#15
Anastasia V Simakova, Yuri S Tokarev, Irma V Issi
Ultrastructure of Fibrillaspora is highly similar to that of Berwaldia but the former is phylogenetically distant from the taxon annotated as Berwaldia schaefernai (Genbank accession # AY090042). It was shown recently, however, that the latter sequence was not derived from Berwaldia, and correct nucleotide sequence data were provided for Berwaldia. This allowed recondideration of Fibrillaspora as a junior synonym of Berwaldia and redefinition of Fibrillaspora daphniae as a new combination, Berwaldia daphniae comb...
February 23, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29471479/seasonal-effects-and-the-impact-of-in-hive-pesticide-treatments-on-parasite-pathogens-and-health-of-honey-bees
#16
Brenna E Traver, Haley K Feazel-Orr, Katelyn M Catalfamo, Carlyle C Brewster, Richard D Fell
Honey bee, Apis mellifera (L.; Hymenoptera: Apidae), populations are in decline and their losses pose a serious threat for crop pollination and food production. The specific causes of these losses are believed to be multifactorial. Pesticides, parasites and pathogens, and nutritional deficiencies have been implicated in the losses due to their ability to exert energetic stress on bees. While our understanding of the role of these factors in honey bee colony losses has improved, there is still a lack of knowledge of how they impact the immune system of the honey bee...
February 17, 2018: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29452083/tribolium-castaneum-gene-expression-changes-after-paranosema-whitei-infection
#17
Alberto Lopez-Ezquerra, Andreas Mitschke, Erich Bornberg-Bauer, Gerrit Joop
BACKGROUND: Microsporidia are obligate parasites that possess some of the smallest eukaryotic genomes. Several insect species are susceptible to infections by microsporidian parasites. Paranosema whitei frequently infects young larvae of Tribolium castaneum and obligately kills the host whereupon transmission to subsequent hosts is accomplished via spores. P. whitei infection results in developmental arrest of T. castaneum, preventing larvae from pupation. The mechanisms underlying P...
February 13, 2018: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/29428490/invertebrate-host-responses-to-microsporidia-infections
#18
Guoqing Pan, Jialing Bao, Zhengang Ma, Yue Song, Bing Han, Maoshuang Ran, Chunfeng Li, Zeyang Zhou
Microsporidia are a group of fungi-like intracellular and unicellular parasites, which infect nearly all animals. As the "master parasites", more than 1400 microsporidian species were described. Microsporidia infections in economical invertebrates (e.g., silkworm, shrimp) caused huge losses, while other microsporidia infections in daphnia, nematode, locust, honeybee and mosquito play important roles in the regulation of their population size. Researches on the invertebrate host responses to Microsporidia infections obtained plenty of interesting results, especially in the innate immune response to these pathogens...
February 8, 2018: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29410054/the-influence-of-microsporidian-pathogens-from-commercially-available-lady-beetles-on-larval-development-of-the-green-lacewing-chrysoperla-carnea-in-the-absence-of-infection
#19
A Fletcher, S Bjørnson
In North America, more than 70 species of natural enemies are available for pest control, including the aphid predators, Adalia bipunctata L. (two-spotted lady beetle) and Hippodamia convergens Guérin-Méneville (convergent lady beetle), and the generalist predator Chrysoperla carnea Stephens (green lacewing). The two lady beetle species are known to host microsporidian pathogens: Nosema adaliae was originally described from Adalia bipunctata and Tubulinosema hippodamiae from H. convergens. Microsporidia are spore-forming pathogens that typically produce chronic, debilitating disease...
February 1, 2018: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/29385188/metabarcoding-analysis-of-eukaryotic-microbiota-in-the-gut-of-hiv-infected-patients
#20
Ibrahim Hamad, Rita Abou Abdallah, Isabelle Ravaux, Saadia Mokhtari, Hervé Tissot-Dupont, Caroline Michelle, Andreas Stein, Jean-Christophe Lagier, Didier Raoult, Fadi Bittar
Research on the relationship between changes in the gut microbiota and human disease, including AIDS, is a growing field. However, studies on the eukaryotic component of the intestinal microbiota have just begun and have not yet been conducted in HIV-infected patients. Moreover, eukaryotic community profiling is influenced by the use of different methodologies at each step of culture-independent techniques. Herein, initially, four DNA extraction protocols were compared to test the efficiency of each method in recovering eukaryotic DNA from fecal samples...
2018: PloS One
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