952 results match your criteria microsporidia prevalence

Molecular detection and genotyping of Enterocytozoon bieneusi in pet dogs in Xinjiang, Northwestern China.

Parasite 2021 20;28:57. Epub 2021 Jul 20.

College of Animal Science, Tarim University, Alar, Xinjiang 843300, PR China.

Enterocytozoon bieneusi is an obligate intracellular parasitic fungi that infects a wide range of mammalian hosts. However, the literature is lacking information regarding the presence and diversity of E. bieneusi genotypes in domesticated dogs in Northwestern China. Read More

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Microsporidiosis in Humans.

Clin Microbiol Rev 2021 Jun 30:e0001020. Epub 2021 Jun 30.

Department of Pathology, Albert Einstein College of Medicine, New York, New York, USA.

Microsporidia are obligate intracellular pathogens identified ∼150 years ago as the cause of pébrine, an economically important infection in silkworms. There are about 220 genera and 1,700 species of microsporidia, which are classified based on their ultrastructural features, developmental cycle, host-parasite relationship, and molecular analysis. Phylogenetic analysis suggests that microsporidia are related to the fungi, being grouped with the Cryptomycota as a basal branch or sister group to the fungi. Read More

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A Systematic Review and Meta-analysis on the Global Molecular Epidemiology of Microsporidia Infection Among Rodents: A Serious Threat to Public Health.

Acta Parasitol 2021 Jun 27. Epub 2021 Jun 27.

Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.

Background: Microsporidiosis as a zoonotic disease has caused serious health problems in high-risk groups, including immunosuppressed individuals. Among the potential animal reservoirs of microsporidia, rodents play a key role due to close-contact with humans and their dispersion in different environments. Therefore, this systematic review and meta-analysis aimed to assess the global status and genetic diversity of microsporidia infection in different rodents. Read More

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Microsporidial Keratitis Related to Water Exposure: A Case Series.

Cureus 2021 Jun 19;13(6):e15760. Epub 2021 Jun 19.

Ophthalmology, Eye Physicians and Surgeons of Augusta, PC, Augusta, USA.

The objective of this retrospective study was to present a series of cases involving the rare ocular disease of microsporidia keratitis treated at a private practice clinic and describe the details regarding specific water exposure, clinical course, voriconazole treatment, and increased prevalence of this infection in Augusta, Georgia, USA. Our analysis was based on the accumulated data from all patients (n=15) diagnosed with microsporidia keratitis at our private practice clinic; the clinical course of three cases is discussed in detail in this article. Specific environmental exposures were documented in 10 patients. Read More

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Molecular epidemiology of Microsporidia among HIV-positive and HIV-negative patients in the Limpopo province, South Africa.

J Infect Dev Ctries 2021 May 31;15(5):710-718. Epub 2021 May 31.

Department of Medical Laboratory Sciences, College of Health Sciences, University of Sharjah, Sharjah, United Arab Emirates.

Introduction: Human microsporidiosis represents an important and rapidly emerging opportunistic disease. The present study investigated the prevalence of microsporidia among HIV positive and HIV negative patients with or without diarrhoea in Vhembe and Mopani Districts in the Limpopo Province.

Methodology: A total of 170 stool samples were collected from these patients and microsporidia species was detected using a Real-Time PCR targeting a conserved region of the small ribosomal subunit rRNA (SSU-rRNA) gene of Enterocytozoon bieneusi, Encephalitozoon intestinalis, Encephalitozoon hellem, and Encephalitozoon cuniculi. Read More

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Comparative Assessment of In-House Real-Time PCRs Targeting Enteric Disease-Associated Microsporidia in Human Stool Samples.

Pathogens 2021 May 26;10(6). Epub 2021 May 26.

Department of Hospital Hygiene & Infectious Diseases, University Medicine Göttingen, 37075 Göttingen, Germany.

Microsporidiosis is an infection predominantly occurring in immunosuppressed patients and infrequently also in travelers. This study was performed to comparatively evaluate the diagnostic accuracy of real-time PCR assays targeting microsporidia with etiological relevance in the stool of human patients in a latent class analysis-based test comparison without a reference standard with perfect accuracy. Thereby, two one-tube real-time PCR assays and two two-tube real-time PCR assays targeting and spp. Read More

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Metatranscriptomic Analysis Reveals an Imbalance of Hepatopancreatic Flora of Chinese Mitten Crab with Hepatopancreatic Necrosis Disease.

Biology (Basel) 2021 May 23;10(6). Epub 2021 May 23.

School of Biology and Basic Medical Science, Soochow University, Suzhou 215123, China.

Hepatopancreas necrosis disease (HPND) of the Chinese mitten crab Eriocheir sinensis causes huge economic loss in China. However, the pathogenic factors and pathogenesis are still a matter of dissension. To search for potential pathogens, the hepatopancreatic flora of diseased crabs with mild symptoms, diseased crabs with severe symptoms, and crabs without visible symptoms were investigated using metatranscriptomics sequencing. Read More

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Susceptibility of the Gypsy Moth (Lepidoptera: Erebidae) to (Microsporidia: Nosematidae).

Insects 2021 May 14;12(5). Epub 2021 May 14.

All-Russian Institute of Plant Protection, Podbelskogo 3, Pushkin, 196608 St. Petersburg, Russia.

The gypsy moth, , is a notorious forest defoliator, and various pathogens are known to act as natural regulators of its population density. As a widespread herbivore with a broad range of inhabited areas and host plants, it is potentially exposed to parasitic microorganisms from other insect hosts. In the present paper, we determined the susceptibility of gypsy moth larvae to the microsporidium from the European corn borer, . Read More

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Molecular and microscopic prevalence of intestinal microsporidia among HIV+/AIDS patients in the Alborz province, Iran.

Trans R Soc Trop Med Hyg 2021 Jun 1. Epub 2021 Jun 1.

Department of Parasitology and Mycology, School of Medicine, Alborz University of Medical Sciences, Karaj, Alborz Province, Iran, 3149779453.

Background: Microsporidia are a large family of obligate intracellular protozoa; these medically important species are recognized as opportunistic agents in intestinal complications in HIV+/AIDS patients.

Methods: The current cross-sectional study was designed and conducted from October 2018 to June 2019 to determine intestinal microsporidia in HIV+/AIDS patients by trichrome/Zeihl-Neelsen staining and SYBR Green-based real-time PCR.

Results: Out of 80 HIV+/AIDS patients, 23. Read More

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Muscular microsporidian infection in Arctic char Salvelinus alpinus from two lakes in Nunavik, Quebec, Canada.

Dis Aquat Organ 2021 May 27;144:209-220. Epub 2021 May 27.

Centre québécois sur la santé des animaux sauvages / Canadian Wildlife Health Cooperative, Faculté de médecine vétérinaire, Université de Montréal, St. Hyacinthe, Quebec J2S 2M2, Canada.

Arctic char Salvelinus alpinus is an important cultural and subsistence resource for Inuit communities. Muscular infections by microsporidia were diagnosed for the first time in Arctic char originating from 2 different lakes in Nunavik (Quebec, Canada). The consumption of these infected fish was associated with digestive tract disorders in people. Read More

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Agri-environment scheme nectar chemistry can suppress the social epidemiology of parasites in an important pollinator.

Proc Biol Sci 2021 05 26;288(1951):20210363. Epub 2021 May 26.

Centre for Ecology, Evolution and Behaviour, Department of Biological Sciences, School of Life Sciences and the Environment, Royal Holloway University of London, Egham, UK.

Emergent infectious diseases are one of the main drivers of species loss. Emergent infection with the microsporidian has been implicated in the population and range declines of a suite of North American bumblebees, a group of important pollinators. Previous work has shown that phytochemicals found in pollen and nectar can negatively impact parasites in individuals, but how this relates to social epidemiology and by extension whether plants can be effectively used as pollinator disease management strategies remains unexplored. Read More

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Two parasites in one host: spatiotemporal dynamics and co-occurrence of Microsporidia and in an amphipod host.

Parasitology 2021 Aug 24;148(9):1099-1106. Epub 2021 May 24.

Department of Zoology, University of Otago, 340 Great King Street, Dunedin 9016, New Zealand.

Biological interactions can greatly influence the abundance of species. This is also true for parasitic species that share the same host. Microsporidia and Rickettsia are widespread intracellular parasites in populations of Paracalliope fluviatilis, the most common freshwater amphipods in New Zealand. Read More

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Sequelae of microsporidial keratoconjunctivitis and its management.

Indian J Ophthalmol 2021 06;69(6):1537-1543

Cornea and Anterior Segment Services, Mithu Tulsi Chanrai Campus, L.V. Prasad Eye Institute, Bhubaneswar, Odisha, India.

Purpose: : To characterize the sequelae of microsporidia keratoconjunctivitis (MKC) and outline its management.

Methods: Retrospective analysis of microbiologically proven MKC returned with persistent disease between January 2015 and December 2019 was done. Demographics, clinical features, management, and outcome were analyzed. Read More

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Parasites and RNA viruses in wild and laboratory reared bumble bees Bombus pauloensis (Hymenoptera: Apidae) from Uruguay.

PLoS One 2021 26;16(4):e0249842. Epub 2021 Apr 26.

Facultad de Ciencias, Sección Etología, Montevideo, Uruguay.

Bumble bees (Bombus spp.) are important pollinators insects involved in the maintenance of natural ecosystems and food production. Bombus pauloensis is a widely distributed species in South America, that recently began to be managed and commercialized in this region. Read More

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Prevalence of Nosema species infections in Apis cerana japonica and Apis mellifera honeybees in the Tohoku region of Japan.

Parasitol Int 2021 Aug 21;83:102361. Epub 2021 Apr 21.

Laboratory of Veterinary Parasitology, Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka 020-8550, Japan. Electronic address:

We investigated here, the prevalence of Nosema microsporidia infections in the honeybees, Apis cerana japonica and Apis mellifera, in the Tohoku region of Japan. We detected Nosema ceranae DNA in 14 (2.8%) of 509 A. Read More

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Pesticides in honey bee colonies: Establishing a baseline for real world exposure over seven years in the USA.

Environ Pollut 2021 Jun 23;279:116566. Epub 2021 Jan 23.

Department of Entomology, University of Maryland, College Park, MD, 20742, USA. Electronic address:

Honey bees Apis mellifera forage in a wide radius around their colony, bringing back contaminated food resources that can function as terrestrial bioindicators of environmental pesticide exposure. Evaluating pesticide exposure risk to pollinators is an ongoing problem. Here we apply five metrics for pesticide exposure risk (prevalence, diversity, concentration, significant pesticide prevalence, and hazard quotient (HQ)) to a nation-wide field study of honey bees, Apis mellifera in the United States. Read More

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J Zoo Wildl Med 2021 Apr;52(1):337-342

Department of Animal Science and Biotechnology, College of Ecology and Environmental Science, Kyungpook National University, Sangju 37224, Republic of Korea,

is the most common species of microsporidia that infects humans and animals worldwide. However, no information is available on infection among zoo animals in the Republic of Korea (ROK). Here, we investigated the prevalence of among animals kept in zoos and the zoonotic potential of the identified. Read More

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Prevalence and new genotypes of Enterocytozoon bieneusi in sheltered dogs and cats in Sichuan province, southwestern China.

Parasite 2021 2;28:31. Epub 2021 Apr 2.

The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China.

Enterocytozoon bieneusi is a common intracellular parasite that infects a wide range of hosts, including humans and companion animals, raising concerns of zoonotic transmission. However, there is limited epidemiological information on the prevalence and genotypes of E. bieneusi in sheltered dogs and cats in Sichuan province, southwestern China. Read More

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The largest meta-analysis on the global prevalence of microsporidia in mammals, avian and water provides insights into the epidemic features of these ubiquitous pathogens.

Parasit Vectors 2021 Apr 1;14(1):186. Epub 2021 Apr 1.

State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400715, China.

Background: Microsporidia are obligate intracellular parasites that can infect nearly all invertebrates and vertebrates, posing a threat to public health and causing large economic losses to animal industries such as those of honeybees, silkworms and shrimp. However, the global epidemiology of these pathogens is far from illuminated.

Methods: Publications on microsporidian infections were obtained from PubMed, Science Direct and Web of Science and filtered according to the Newcastle-Ottawa Quality Assessment Scale. Read More

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Testing the multiple stressor hypothesis: chlorothalonil exposure alters transmission potential of a bumblebee pathogen but not individual host health.

Proc Biol Sci 2021 03 31;288(1947):20202922. Epub 2021 Mar 31.

School of Biological Sciences, Illinois State University, Normal, IL 61790, USA.

Numerous threats are putting pollinator health and essential ecosystem pollination services in jeopardy. Although individual threats are widely studied, their co-occurrence may exacerbate negative effects, as posited by the multiple stressor hypothesis. A prominent branch of this hypothesis concerns pesticide-pathogen co-exposure. Read More

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Pesticides residues and metabolites in honeybees: A Greek overview exploring Varroa and Nosema potential synergies.

Sci Total Environ 2021 May 17;769:145213. Epub 2021 Jan 17.

Benaki Phytopathological Institute, Department of Pesticides Control and Phytopharmacy, Laboratory of Pesticides' Toxicology, 8 St. Delta Street, Kifissia, 14561 Athens, Greece. Electronic address:

The aim of this study was to investigate reported cases of honeybee mortality incidents and the potential association to pesticide exposure and to their metabolites. The same honeybee samples were also assessed for Varroa mites, and Nosema microsporidia provoked infections to provide an integrated picture of all observable stressors that may impact bees' survival. Thus, honeybee samples from different areas of Greece (2014-2018) were analyzed for the presence of pesticide residues and metabolites. Read More

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First report and molecular prevalence of potential zoonotic Enterocytozoon bieneusi in Turkish tumbler pigeons (Columba livia domestica).

Med Mycol 2021 Mar 16. Epub 2021 Mar 16.

Department of Parasitology, Faculty of Veterinary Medicine, University of Erciyes, 38039 Kayseri, Turkey.

A total of 250 droppings of tumbler pigeons (Columba livia domestica, Columbidae) were collected individually from different breeders in Turkey, to investigate the presence and genotyping of microsporidian species by nested PCR and to reveal their zoonotic potential. In the present study, Enterocytozoon bieneusi was the only microsporidian species identified in 35 pigeons with an overall molecular prevalence of 14.0%. Read More

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Occurrence of Enterocytozoon hepatopenaei (EHP) infection on Penaeus vannamei in one rearing cycle.

Dis Aquat Organ 2021 Mar 11;144:1-7. Epub 2021 Mar 11.

Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia.

The microsporidian parasite Enterocytozoon hepatopenaei (EHP) is an emerging problem in the marine shrimp industry, primarily in Asian countries such as China, Thailand, India, Malaysia, Indonesia, and Vietnam. A screening was conducted to investigate the prevalence of EHP after a fixed period of culturing for 1 rearing cycle in 3 states of Malaysia. The screening stages covered Penaeus vannamei post larvae (PL) and after 14-30, 31-50, 51-70, and 71-90 d of culture in 1 production cycle. Read More

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Genotyping and zoonotic potential of Cryptosporidium and Enterocytozoon bieneusi in pigs transported across regions in China.

Microb Pathog 2021 May 6;154:104823. Epub 2021 Mar 6.

National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, 200025, PR China. Electronic address:

Cryptosporidium spp. and Enterocytozoon bieneusi are common and important enteric parasites that can infect humans and animals, causing diarrhoea and systemic diseases. The objectives of the present study were to examine the prevalence and genetic variations of Cryptosporidium and E. Read More

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Investigation of Intestinal Protozoon Prevalence in Immunocompromised Patients at a University Hospital

Turkiye Parazitol Derg 2021 03;45(1):39-44

Hacettepe University Faculty of Medicine, Department of Medical Microbiology, Ankara, Turkey

Objective: Immunocompromised patients are at a greater risk of developing intestinal parasite infections. In this study, we examined the presence of and other intestinal protozoa in stool samples of immunosuppressed patients.

Methods: A total of 100 stool samples were obtained from patients receiving chemotherapy because of solid organ tumour with haematological malignancies and those receiving immunosuppressive treatment because of rheumatic diseases, organ transplant patients and patients receiving treatment for HIV-related infections. Read More

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High Frequency of Genotype WL12 Occurrence among Immunocompromised Patients with Intestinal Microsporidiosis.

J Fungi (Basel) 2021 Feb 24;7(3). Epub 2021 Feb 24.

Laboratoire de Parasitologie et Mycologie, UR17SP03, La Rabta Hospital, Tunis 1007, Tunisia.

Microsporidiosis is an emerging opportunistic infection causing severe digestive disorders in immunocompromised patients. The aim of this study was to investigate the prevalence of intestinal microsporidia carriage among immunocompromised patients hospitalized at a major hospital complex in the Tunis capital area, Tunisia (North Africa), and perform molecular epidemiology and population structure analyses of , which is an emerging fungal pathogen. We screened 250 stool samples for the presence of intestinal microsporidia from 171 patients, including 81 organ transplant recipients, 73 Human Immunodeficiency Virus (HIV)-positive patients, and 17 patients with unspecified immunodeficiency. Read More

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February 2021

A global view on fungal infections in humans and animals: opportunistic infections and microsporidioses.

J Appl Microbiol 2021 Feb 8. Epub 2021 Feb 8.

Department of Mycology and Genetics, Faculty of Biological Sciences, Institute of Genetics and Microbiology, University of Wroclaw, Wroclaw, Poland.

After cardiovascular diseases, infectious diseases are the second most common cause of death worldwide. Although these infections are caused mainly by viruses or bacteria, a systematically growing prevalence of human and animal opportunistic fungal infections is noticeable worldwide. More attention is being paid to this problem, especially due to the growing frequency of recalcitrant and recurrent mycoses. Read More

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February 2021

Global prevalence of microsporidia infection in cats: A systematic review and meta-analysis of an emerging zoonotic pathogen.

Prev Vet Med 2021 Mar 27;188:105278. Epub 2021 Jan 27.

Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Microsporidiosis in pet and stray cats is an emerging zoonotic threat with public health significance worldwide. However, the epidemiological patterns of feline microsporidiosis is still neglected around the world. Hence, current systematic review and meta-analysis aimed at characterizing the prevalence estimates and genotypes of microsporidian parasites among cats of the world. Read More

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The effect of salinity on enterocytozoon hepatopenaei infection in Penaeus vannamei under experimental conditions.

BMC Vet Res 2021 Feb 2;17(1):65. Epub 2021 Feb 2.

Aquaculture Pathology Laboratory, School of Animal and Comparative Biomedical Sciences, The University of Arizona, 1117 E Lowell st. Tucson, AZ,, 85721, USA.

Background: Enterocytozoon hepatopenaei (EHP) is an enteric pathogen that affects Penaeus vannamei and Penaeus monodon shrimp in many SE Asian countries. In the western hemisphere, EHP was reported for the first time in 2016 in farmed P. vannamei in Venezuela. Read More

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February 2021

Molecular detection and genotype identification of E. cuniculi from pet rabbits.

Comp Immunol Microbiol Infect Dis 2021 Apr 26;75:101616. Epub 2021 Jan 26.

Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Electronic address:

Encephalitozoon cuniculi is a microsporidian which is frequently reported from rabbits. This microorganism can either ravage rabbit farms or transmit to humans from pet rabbits. This study aimed to investigate the prevalence and the genotype distribution of E. Read More

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