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Clinical characteristics, progression patterns and treatment outcomes in microsporidial keratoconjunctivitis: a prospective study in Thailand.
Int Ophthalmol
November 2024
Department of Ophthalmology, Phramongkutklao Hospital, 315 Ratchawithi Road, Thung Phayathai Subdistrict, Ratchathewi, Bangkok, 10400, Thailand.
Purpose: To assess the clinical characteristics, progression patterns, and treatment outcomes of microbiologically confirmed microsporidial keratoconjunctivitis (MKC).
Methods: This prospective cross-sectional study included patients with superficial punctate epithelial keratitis clinically suspected of MKC. Comprehensive slit-lamp examinations were conducted, and corneal scraping was performed for Gram-chromotrope staining and polymerase chain reaction (PCR) analysis.
Microsporidia-cypovirus interactions during simultaneous infection of the tree defoliator Dendrolimus sibiricus (Lepidoptera: Lasiocampidae).
J Invertebr Pathol
November 2024
All-Russian Institute of Plant Protection, sh. Podbelskogo 3, Pushkin, St. Petersburg 196608, Russia. Electronic address:
The Siberian moth, Dendrolimus sibiricus is a dangerous forest defoliator, the number one pest of boreal forests in Asia. Search for effective and ecologically friendly control measures drives attention to microbial pathogens. Viruses and microsporidia are obligate intracellular parasites widespread in insect populations causing either chronic or acute infections.
View Article and Find Full Text PDFImmunofluorescence detection of Ecytonucleospora hepatopenaei (EHP) in Penaeus vannamei.
J Microbiol Methods
November 2024
Aquaculture Pathology Laboratory, School of Animal and Comparative Biomedical Sciences, The University of Arizona, Tucson, AZ 85721, USA. Electronic address:
Hepatopancreatic microsporidiosis (HPM), caused by the microsporidium Ecytonucleospora hepatopenaei (EHP) leads to retarded growth and enhanced susceptibility to other diseases in shrimp resulting in a major loss for the shrimp industry worldwide. It is little understood how EHP infects its host and hijacks its cellular machinery to replicate and exert clinical manifestations in infected shrimp. Since the initial record of HPM, histopathology and polymerase chain reaction (PCR)-based assays were developed for the detection of EHP to prevent spread of the disease.
View Article and Find Full Text PDFUltrastructural and molecular characterization of Glugea sp. (microsporidia), a parasite of the Red Sea fish Carangoides bajad (Carangidae).
J Eukaryot Microbiol
November 2024
Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia.
Glugea sp. found infecting the liver of the teleost fish Carangoides bajad from the Red Sea, Egypt, is described based on light microscopy and ultrastructural characteristics combined with phylogenetic analyses. This microsporidium forms whitish xenomas up to ~4 mm in size.
View Article and Find Full Text PDFWolbachia strain diversity in a complex group of sympatric cryptic parasitoid wasp species.
BMC Microbiol
September 2024
Organismal and Evolutionary Biology Research Programme, University of Helsinki, Helsinki, Finland.
Background: Maternally-inherited symbionts can induce pre-mating and/or post-mating reproductive isolation between sympatric host lineages, and speciation, by modifying host reproductive phenotypes. The large parasitoid wasp genus Cotesia (Braconidae) includes a diversity of cryptic species, each specialized in parasitizing one to few related Lepidoptera host species. Here, we characterized the infection status of an assemblage of 21 Cotesia species from 15 countries by several microbial symbionts, as a first step toward investigating whether symbionts may provide a barrier to gene flow between these parasitoid host lineages.
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