An intronless gene encoding a protein of 674 amino acid residues with a molecular mass of 73,403 Da showing homology to the cytoplasmic form of the 70 kDa heat shock proteins has been cloned and sequenced from the intestinal pathogen Cryptosporidium parvum. Monospecific polyclonal antibodies obtained to recombinant protein recognized a single band with an approximate molecular mass of 70 kDa on a Western blot of C. parvum proteins, as well as the 70 kDa heat shock protein from bovine brain. Southern blot analysis suggested the gene was single copy in the C. parvum genome. Eleven perfect repeats of the sequence GGMP were found in the predicted protein near the carboxyl terminus.
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http://dx.doi.org/10.1111/j.1550-7408.1995.tb01605.x | DOI Listing |
Water Environ Res
January 2025
Laboratorio Nacional para la Investigación en Inocuidad Alimentaria (LANIIA), Centro de Investigación en Alimentación y Desarrollo (CIAD), Culiacán, Sinaloa, Mexico.
The reliance on agriculture in many nations has increased the use of treated wastewater for irrigation. However, reclaimed water still poses health risks from resistant pathogens like Cryptosporidium spp. Ozone, a strong disinfectant, has been used in water treatment.
View Article and Find Full Text PDFUnlabelled: Once considered rare in eukaryotes, polycistronic mRNA expression has been identified in kinetoplastids and, more recently, green algae, red algae, and certain fungi. This study provides comprehensive evidence supporting the existence of polycistronic mRNA expression in the apicomplexan parasite . Leveraging long-read RNA-seq data from different parasite strains and using multiple long-read technologies, we demonstrate the existence of defined polycistronic transcripts containing 2-4 protein encoding genes, several validated with RT-PCR.
View Article and Find Full Text PDFMicroorganisms
January 2025
Unidade de Parasitologia Médica, Grupo de Parasitas Oportunistas/VIH e Outros Parasitas, Global Health and Tropical Medicine, GHTM, Associate Laboratory in Translation and Innovation Towards Global Health, LA-REAL, Instituto de Higiene e Medicina Tropical, IHMT, Universidade NOVA de Lisboa, 1349-008 Lisboa, Portugal.
spp. and are important diarrheal agents in children in developing countries. Little is known about their molecular epidemiology; as such, the objective of this study was to determine the risk factors and genetic diversity of both parasites in diarrheal samples in Mozambique.
View Article and Find Full Text PDFAnimals (Basel)
January 2025
Clinique Vétérinaire des Mazets, 15400 Riom es Montagnes, France.
()-caused calf diarrhoea (scours) is widespread and leads to calf mortality in cattle industries worldwide. A recent discovery of a glycopeptide epitope on the parasite recognized by a monoclonal antibody has led to the development of a new vaccine. It was designed for cows to pass on passive immunity to their neonatal calves.
View Article and Find Full Text PDFVet Parasitol Reg Stud Reports
January 2025
Parasitology Department, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt. Electronic address:
Cryptosporidium is a leading cause of diarrhea in children and immunocompromised patients. Various animals and birds can also be infected with this protist, and Cryptosporidium zoonosis is common. A few reports have been published worldwide on Cryptosporidium infections in chickens.
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