When exposed to 254-nm UV, spores of Encephalitozoon intestinalis, Encephalitozoon cuniculi, and Encephalitozoon hellem exhibited 3.2-log reductions in viability at UV fluences of 60, 140, and 190 J/m(2), respectively, and demonstrated UV inactivation kinetics similar to those observed for endospores of DNA repair-defective mutant Bacillus subtilis strains used as biodosimetry surrogates. The r...

background: species of microsporidia have been known as opportunistic obli-gate intracellular parasites particularly in immunocompromised patients. enterocyto-zoon bieneusi is one of most prevalent intestinal microsporida parasites in hiv + /aids patients. in this study, intestinal microsporidia infection was deter-mined in hiv + /aids patients using microscopic and molecular methods. methods: ...

INTRODUCTION Microsporidia spp. are ubiquitous and infect a wide variety of intervertebrates and vertebrates, including humans. Pulmonary microsporidiosis, characterized by nonspecific symptoms like fever, cough and dyspnea, is often overlooked in the differential diagnosis of pulmonary infections in immunsupressed patients. In this study, we aimed to determine the prevalence of pulmonary micro...

UNLABELLED Microsporidia are a group of obligate intracellular parasites that are best known for their unique infection mechanism and their unparalleled levels of genomic reduction and compaction. We sequenced the genome of Ordospora colligata, a gut parasite of the microcrustacean Daphnia sp. and the closest known relative to the microsporidia characterized by the most extreme genomic reductio...

This report is an extension of a preliminary investigation on the use of chlorine to inactivate spores of Encephalitozoon intestinalis and to investigate the effect of chlorine on two other species, E cuniculi and E. hellem, associated with human infection. The 50% tissue culture infective doses of these three species were also determined. On the basis of the results obtained, it appears that c...

This is a case report of cerebral microsporidiosis found in a young squirrel monkey (Saimiri sciureus) in a colony located in Japan, which probably died of yersiniosis due to Yersinia pseudotuberculosis infection. The microsporidia, Encephalitozoon cuniculi, was detected in the brain of the yersiniosis-diseased monkey and was further characterized as a genetically unique type of strain III. The...

Human enteropathogenic microsporidia (HEM), Cryptosporidium parvum, Cyclospora cayetanesis, and Giardia lamblia are associated with gastrointestinal disease in humans. To date, the mode of transmission and environmental occurrence of HEM (Encephalitozoon intestinalis and Enterocytozoon bieneusi) and Cyclospora cayetanesis have not been fully elucidated due to lack of sensitive and specific envi...

Enterocytozoon bieneusi and Encephalitozoon spp. are microsporidian pathogens with zoonotic potential that pose significant public health concerns. To ascertain the occurrence genotypes of E. spp., we used nested PCR to amplify internal transcribed spacer (ITS) gene DNA sequencing analyze 198 fecal samples from red pandas 6 zoos in China. The total rate microsporidial infection was 15.7% (31/19...