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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]
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 ]
Blastocystis has low host specificity, and many different species of Blastocystis can infect humans, [3] and by current convention, any of these species would be identified as Blastocystis hominis. Blastocystis is one of the most common human parasites in the world and has a global distribution.
An outbreak of Cryptosporidium hominis occurs in the southern part of Milwaukee, Wisconsin, and kills 101 people, caused by human feces contaminating the city's water system and evaded the water treatment as the cysts survive chlorine. An elderly delivery man in Dallas, Texas comes down with leishmaniasis.
Blastocystis spp. intestinal direct microscopy of stool (PCR, antibody) • worldwide: one of the most common human parasites [1] [2] • Developing regions: infects 40–100% of the total populations [1] [2] [3] eating food contaminated with feces from an infected human or animal Cryptosporidiosis: Cryptosporidium spp. intestines stool widespread
Melarsoprol (for treatment of sleeping sickness caused by Trypanosoma brucei) Eflornithine (for sleeping sickness) Metronidazole (for vaginitis caused by Trichomonas) Tinidazole (for intestinal infections caused by Giardia lamblia) Miltefosine (for the treatment of visceral and cutaneous leishmaniasis, currently undergoing investigation for ...
He described Blastocystis hominis and Entamoeba dispar. The latter species helped to explain why most people who appeared to be infected with Entamoeba histolytica were asymptomatic. However, because there are no morphological differences between the two species, his proposal was largely ignored for over 50 years before being proven correct ...
Entamoeba coli is a non-pathogenic species of Entamoeba that frequently exists as a commensal parasite in the human gastrointestinal tract. E. coli (not to be confused with the bacterium Escherichia coli) is important in medicine because it can be confused during microscopic examination of stained stool specimens with the pathogenic Entamoeba histolytica. [1]