Difference between revisions of "Taenia solium"

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{{Taxobox
 
{{Taxobox
 
|name              = ''Taenia solium
 
|name              = ''Taenia solium
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[[Image:Taenia solium.jpg|200px|thumb|right|''Taenia solium'' <br> Roberto J. Galindo, Wikimedia Commons]]
 
[[Image:Taenia solium.jpg|200px|thumb|right|''Taenia solium'' <br> Roberto J. Galindo, Wikimedia Commons]]
Also known as: '''''Cysticercus cellulosae Human pork tapeworm
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{| cellpadding="10" cellspacing="0" border="1"
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| Also known as:
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| '''''Cysticercus cellulosae''<br>Human pork tapeworm
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==Hosts==
 
==Hosts==
'''Intermediate host''': Pig (natural intermediate host), man (accidental intermediate host) and very exceptionally the dog.
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'''Intermediate host''': Pig, and also occasionally the dog and man.
  
 
'''Definitive host''': Man.
 
'''Definitive host''': Man.
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==Life Cycle==
 
==Life Cycle==
The  life-cycle is similar to that of [[Taenia saginata|''T. saginata'']], except now the pig is  the intermediate host. Gravid segments, containing the parasite eggs  are passed in faeces.  The oncospheres are then ingested by the  intermediate host, in this case the pig, and pass into the blood system,  infecting striated muscles.  The cysticerci may also develop in the lungs, liver, kidney and the brain.  Like ''T. saginata'', humans, which  are the definitive hosts, become infected via ingestion of poorly cooked  meat containing viable cysticerci.
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The  life-cycle is similar to that of [[Taenia saginata|''T. saginata'']], except now the pig is  the intermediate host. Gravid segments, containing the parasite eggs  are passed in faeces.  The oncospheres are then ingested by the  intermediate host, in this case the pig, and pass into the blood system,  infecting striated muscles.  The cysticerci may also develop in the lungs, liver, kidney and the brain.  Like ''T. saginata'', humans, which  are the definitive host becomes infected via ingestion of poorly cooked  meat.
Contrary to ''T. saginata'', humans can also act as intermediate host. Cysticerci can develop in several tissues, including the central nervous system, causing neurocysticercosis in man.
 
  
{{Learning
 
|flashcards = [[Cestodes_Flascards|Cestodes Flashcards]]
 
|literature search = [http://www.cabdirect.org/search.html?rowId=1&options1=AND&q1=title:(%22Taenia+solium%22)+OR+title:(%22Cysticercus+cellulosae%22)+&occuring1=freetext&rowId=2&options2=AND&q2=&occuring2=freetext&rowId=3&options3=AND&q3=&occuring3=freetext&publishedstart=2000&publishedend=yyyy&calendarInput=yyyy-mm-dd&la=any&it=any&show=all&x=48&y=8 ''Taenia solium'' publications since 2000]
 
}}
 
  
 
==References==
 
==References==
 
Taylor, M.A, Coop, R.L., Wall,R.L. (2007) '''Veterinary Parasitology''' ''Blackwell Publishing''
 
Taylor, M.A, Coop, R.L., Wall,R.L. (2007) '''Veterinary Parasitology''' ''Blackwell Publishing''
  
Ito A et al. Dogs as alternative intermediate hosts of ''Taenia solium'' in Papua (Irian Jaya), Indonesia confirmed by highly specific ELISA and immunoblot using native and recombinant antigens and mitochondrial DNA analysis. J Helminthol. 2002 Dec;76(4):311-4.
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[[Category:Taeniidae]]
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[[Category:To_Do_-_Max]][[Category:Zoonoses]]
  
 
{{review}}
 
 
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[[Category:Taeniidae]]
 
[[Category:Zoonoses]]
 
 
[[Category:Expert_Review]]
 
[[Category:Expert_Review]]

Revision as of 12:02, 3 August 2010

Taenia solium
Kingdom Animalia
Phylum Platyhelminthes
Class Cestoda
Order Cyclophyllidea
Family Taeniidae
Genus Taenia
Species T. solium
Taenia solium
Roberto J. Galindo, Wikimedia Commons
Also known as: Cysticercus cellulosae
Human pork tapeworm

Hosts

Intermediate host: Pig, and also occasionally the dog and man.

Definitive host: Man.

Identification

The adults are 3-5m in length, have a scolex, and several rows of hooks.

Life Cycle

The life-cycle is similar to that of T. saginata, except now the pig is the intermediate host. Gravid segments, containing the parasite eggs are passed in faeces. The oncospheres are then ingested by the intermediate host, in this case the pig, and pass into the blood system, infecting striated muscles. The cysticerci may also develop in the lungs, liver, kidney and the brain. Like T. saginata, humans, which are the definitive host becomes infected via ingestion of poorly cooked meat.


References

Taylor, M.A, Coop, R.L., Wall,R.L. (2007) Veterinary Parasitology Blackwell Publishing