Taenia saginata


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Taenia

 [te´ne-ah]
a genus of tapeworm. See figure at tapeworm.
Taenia sagina´ta a species 4 to 8 meters long, found in the adult form in the human intestine and in the larval state in muscles and other tissues of cattle and other ruminants; human infection usually results from eating inadequately cooked beef.
Taenia so´lium a species 2 to 4 meters long, found in the adult intestine of humans; the larval form most often is found in muscle and other tissues of the pig. Human infection results from eating inadequately cooked pork.

Tae·ni·a sa·gi·na·'ta

the beef, hookless, or unarmed tapeworm of humans, acquired by eating insufficiently cooked flesh of cattle infected with Cysticercus bovis.

Taenia saginata

a species of tapeworm that inhabits the tissues of cattle during its larval stage and infects the intestine of humans in its adult form. T. saginata may grow to a length of between 12 and 25 feet and is the tapeworm species that most often infects humans. Also called beef tapeworm. See also tapeworm, tapeworm infection.

beef tapeworm

The most common intestinal tapeworm to affect humans, which is acquired from infected, poorly cooked beef, which measures up to 3.6–7.5 m in length.
 
Clinical findings
Weight loss, loss of appetite, abdominal pain, nausea, constipation, chronic indigestion, diarrhea, headaches, vertigo.
 
Epidemiology
Infestation rarely occurs where public health officials conduct regular and rigourous inspection of meat, but is relatively common outside of North America and Western Europe.

Diagnosis
Stool examination for parasite eggs.

Management
Praziquantel.

Tae·ni·a sa·gi·na·ta

(tē'nē-ă saj-i-nā'tă)
The beef, hookless, or unarmed tapeworm of humans, acquired by eating insufficiently cooked beef or veal infected with Cysticercus bovis.
Enlarge picture
TAENIA SAGINATA: beef tapeworm (orig. mag. ×100)

Taenia saginata

A species whose larvae live in cattle. The adult worm lives in the small intestine of humans, who acquire it by eating insufficiently cooked beef infested with the encysted larval form (cysticercus or bladderworm). Adult worms may reach a length of 15 to 20 ft (4.6 to 6.1 m) or longer.
Synonym: beef tapeworm; unarmed tapeworm See: illustration
See also: Taenia

Taenia

a genus of cyclophyllidean tapeworms of the family Taeniidae. The adult tapeworm inhabits the intestine of carnivores, the larval stage (metacestode) invades the tissues of a variety of animals, in some cases humans. They cause some economic loss due to condemnation of offal, but their greatest importance is their zoogenetic potential, and the preoccupation of humans with the danger of becoming infected.
Tapeworms and their hosts are listed below, but species whose intermediate hosts are unknown are: T. bubesi (lion), T. crocutae (spotted hyena), T. erythraea (black-backed jackal), T. gongamai and T. hlosei (lion and cheetah), T. lycaontis (hunting dog), T. regis (lion).

Taenia brauni
adult tapeworms in dogs and jackals and the larval stage (coenurus) in rats, mice and porcupines. It is probably a subspecies of T. serialis.
Taenia crassiceps
adult tapeworms in foxes and coyotes, the larval stage (cysticercus) in rodents.
Taenia hydatigena
tapeworms in small intestine of dogs, wolves and wild Carnivora, and the larval stage, Cysticercus tenuicollis, found in the sheep and other ruminants, and in pigs and occasionally primates.
Taenia hyenae
tapeworms are in hyenas and the cysticerci in antelopes.
Taenia krabbei
adult tapeworms are found in the dog and in wild carnivores and the larval cestode, Cysticercus tarandi, in the muscles of wild ruminants, especially deer.
Taenia laticollis
tapeworms found in carnivores and larval forms in rodents. Possibly a synonym for T. pisiformis.
Taenia macrocystis
adult tapeworms in lynx and coyote, and the intermediate stage in snowshoe lagomorphs.
Taenia martis
the adult tapeworms in the marten and the cysticercus in the vole.
Taenia multiceps (syn. Multiceps multiceps)
the adult tapeworms are found in the dog and wild canids, the larvae, Coenurus cerebralis, in the brain and spinal cord of sheep and goat.
Taenia mustelae
adult tapeworms in martens, weasels, otters, skunks, badgers and larval stages in voles and other rodents.
Taenia omissa
adult tapeworms in the cougar and larvae in deer.
Taenia ovis
adult tapeworms are found in dogs and wild carnivores and the larval stage, Cysticercus ovis, in the skeletal and cardiac muscles of sheep and goats.
Taenia parva
adult tapeworms in genets, larval stage in rodents.
Taenia pisiformis
adult tapeworms found in small intestine of dog, fox, some wild carnivores, and very rarely in cats. The metacestode stage (Cysticercus pisiformis) found in lagomorphs, in the liver and peritoneal cavity.
Taenia polyacantha
adults are in the intestine of foxes and the metacestodes in microtine rodents.
Taenia rileyi
adult tapeworms found in lynx, larvae in rodents.
Taenia saginata
adult tapeworms are intestinal parasites of humans, and the metacestode (Cysticercus bovis) in cattle and some wild ruminants.
Taenia serialis
the adult tapeworm is found in dogs and foxes and the metacestode, Coenurus serialis, in the subcutaneous and intramuscular tissues of lagomorphs.
Taenia serrata
see T. pisiformis (above).
Taenia solium
the adults are found in the small intestine of humans and some apes, the metacestode (Cysticercus cellulosae) in the skeletal and cardiac muscle of pigs and in the brain of humans.
Taenia taeniaeformis
the adult is found in the small intestine of cats and other related carnivores and the metacestode (Cysticercus fasciolaris) in the livers of rodents.
Taenia twitchelli
adult tapeworms found in wolverines, larvae in lungs and pleural cavity of porcupines.
References in periodicals archive ?
Value of Taenia saginata crude antigen in diagnosis of bovine cysticercosis with reference to its characterization.
Experimental bovine infection with Taenia saginata eggs: recovery rates and cysticerci location.
In vitro oncospherekilling assays to determine immunity to the larvae of Taenia pisiformis, Taenia ovis, Taenia saginata, and Taenia solium.
Immunization of bovines agains Taenia saginata infection.
Sero-epidemiological study of Taenia saginata cysticercosis in Belgian cattle.
Development of a dot-enzyme immunoassay for the detection of circulating antigen in cattle infected with Taenia saginata cysticerci.
Study of some population characteristics of Taenia saginata in western Siberia [in Russian].
Morphological description of Taenia saginata asiatica (Cyclophyllidea: Taeniidae) from man in Asia.
2003), realizado com extratos antigenicos de larvas de Taenia saginata, Taenia solium e Taenia crassiceps.
Nos ensaios de immunoblot, foram utilizados o antigeno vesicular de Taenia crassiceps e 28 amostras referentes aos soros-controle de 28 animais negativos para cisticercose e 28 amostras de soroscontrole coletadas em quatro bovinos experimentalmente infectados com ovos de Taenia saginata, em diferentes fases de evolucao da doenca (intervalos de 15 dias), a partir dos 90 dias da inoculacao dos ovos.
trichura, Enteroblus vermicularis, hook worm, Taenia saginata, Hymenolepis nana, Entamoeba histolytica and Girdia sp.
of scolex used identification 1 Taenia saginata NA NT 2 T.