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The fact that Blastocystis' infection route is oral-anal indicates that carriers have been in contact with faecal contaminated matter which might have included other intestinal pathogens that explain the observed symptoms. A more likely explanation is the presence of virulent and non-virulent strains since there exists an enormous genetic ...
Blastocystis hominis is a single-celled eukaryotic organism that inhabits the gastrointestinal tract of humans and various animals. [1] This stramenopile exhibits significant genetic diversity and has become an organism of increasing scientific interest due to its widespread distribution and controversial role in human health. [ 2 ]
Researchers have published conflicting reports concerning whether Blastocystis causes symptoms in humans, with one of the earliest reports in 1916. [2] The incidence of reports associated with symptoms began to increase in 1984, [3] with physicians from Saudi Arabia reporting symptoms in humans [4] and US physicians reporting symptoms in individuals with travel to less developed countries. [5]
Irritable bowel syndrome (IBS) is associated with the bacteria enteroaggregative Escherichia coli [68] and Mycobacterium avium subspecies paratuberculosis, [69] the protozoan parasite Giardia lamblia, [70] and pathogenic strains of the protozoan parasite Blastocystis hominis. [71]
Recent in-vitro host-Blastocystis interaction studies of phenotypic characteristics indicate that Blastocystis subtypes 3, 5, and 7 correlate well with the pathogenic form of this diseases. Transmission electron microscopy has revealed that these sub-types have polymorphic amoeboid forms containing a large central vacuole that is completely ...
Cryptosporidium hominis, along with Cryptosporidium parvum, is among the medically important Cryptosporidium species. [1] It is an obligate parasite of humans that can colonize the gastrointestinal tract resulting in the gastroenteritis and diarrhea characteristic of cryptosporidiosis.
A protist (/ ˈ p r oʊ t ɪ s t /) is any eukaryotic organism (one with cells containing a nucleus) that is not an animal, plant, or fungus.The protists do not form a natural group, or clade, since they exclude certain eukaryotes with whom they share a common ancestor; [a] but, like algae or invertebrates, the grouping is used for convenience.
Isosporiasis, also known as cystoisosporiasis, is a human intestinal disease caused by the parasite Cystoisospora belli (previously known as Isospora belli).It is found worldwide, especially in tropical and subtropical areas.