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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 is a genus of single-celled parasites belonging to the Stramenopiles that includes algae, diatoms, and water molds.There are several species, living in the gastrointestinal tracts of species as diverse as humans, farm animals, birds, rodents, reptiles, amphibians, fish, and cockroaches. [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]
Protozoal infections can cause symptoms that mirror specific IBS subtypes, [51] e.g., infection by certain substypes of Blastocystis hominis (blastocystosis). [52] [53] Many people regard these organisms as incidental findings, and unrelated to symptoms of IBS.
We also know the cysteine protease activativation of receptor-2 plays a role in the presence of abdominal pain and diffuse symptoms in Blastocystis infection, even in the absence of any endoscopic findings (Sohail, M. R., and P. R. Fischer. 2005. Blastocystis hominis and travelers. Travel Medicine Infectious Diseases. 333-38). AndB. hominis WR1 ...
The Vietnamese Wikipedia initially went online in November 2002, with a front page and an article about the Internet Society.The project received little attention and did not begin to receive significant contributions until it was "restarted" in October 2003 [3] and the newer, Unicode-capable MediaWiki software was installed soon after.
Blastocystis hominis, a human parasite Sarcoptes scabiei var. hominis , a human mite subspecies Staphylococcus hominis , a species of Staphylococcus found in humans
The blastocyst stage occurs between 5 and 9 days after conception. During embryonic development, after fertilization (approximately 5–6 days in the human), the cells of the morula begin to undergo cell differentiation, and the morula changes into the blastocyst by pumping fluid to grow a lumen.