Strongyloides

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Strongyloides

 [stron″jĭ-loi´dēz]
a genus of nematode parasites. S. stercora´lis is a species found in the intestines of humans and other mammals in the tropics, and is the most common cause of strongyloidiasis.
Life cycle of Strongyloides stercoralis. From Mahon and Manuselis, 2000.

Strongyloides

(stron'ji-loy'dēz),
The threadworm, a genus of small nematode parasites (superfamily Rhabditoidea), commonly found in the small intestine of mammals (particularly ruminants), that are characterized by an unusual life cycle that involves one or several generations of free-living adult worms. Human infection is chiefly by S. stercoralis, the small human roundworm, widespread in all tropic regions, or by S. fuelleborni, a parasite of nonhuman primates in African and Asian tropics and of humans in African tropics. The subspecies S. fuelleborni kellyi occurs in New Guinea where it causes widespread infection. Fatal infection in 2-month-old infants, possibly infected by transmammary transmission, produces the condition known locally as swollen belly disease or swollen belly syndrome, which causes grossly distended abdomens, invariably fatal in these infants. Other species include S. papillosus in cattle, sheep, and goats, and S. ransomi in swine.
[G. strongylos, round, + eidos, resemblance]

Stron·gy·loi·des

(stron'ji-loy'dēz)
The threadworm, a genus of small nematode parasites commonly found in the small intestine of mammals (particularly ruminants). Human infection is chiefly by S. stercoralis or S. fuelleborn. Fatal infection in infants produces the condition known as swollen belly disease or syndrome, which causes gross abdominal distention.
[G. strongylos, round, + eidos, resemblance]
References in periodicals archive ?
[105] demonstrated that 96.0% of sera from patients with strongyloidiasis recognized immunodominant antigens of Strongyloides ratti. According to western blots, the sera from infected patients can recognize different molecular antigenic patterns.
Eschbach et al., "Strongyloides ratti infection induces expansion of Foxp3+ regulatory T cells that interfere with immune response and parasite clearance in BALB/c Mice," The Journal of Immunology, vol.
Costa-Cruz, "Western blotting using Strongyloides ratti antigen for the detection of IgG antibodies as confirmatory test in human strongyloidiasis," Memorias do Instituto Oswaldo Cruz, vol.
En el Peru, el primer trabajo sobre enteropatasitos en Rattus norvegicus (Mus norvegicus) fue hecho por Ayulo y Dammert (1947) en la ciudad de Lima, encontrando una prevalencia de 76.4% (Hymenolepis diminuta, Hymenolepis nana, Strongyloides ratti, Heterakis spumosa, Syphacia obvelata, Trichuris muris, Gigantorhynchus moniliformis).
Helmintos gastrointestinales en 73 ratas de Lima Metropolitana (julio 2010-junio 2011) Helmintos Animales Rattus Rattus infectados rattus norvegicus (n=53) (n=20) n % n % n % Gongylonema neoplasticum 37 50.7 22 41.5 15 75.0 Protospirura chanchanensis 2 2.7 2 3.8 -- -- Hymenolepis diminuta 32 43.8 21 39.6 11 55.0 Rodentolepis fraterna 5 6.8 4 7.5 1 5.0 Moniliformis monifilormis 24 32.9 17 32.1 7 35.0 Raillietina demerariensis 4 5.5 4 7.5 -- -- Strongyloides ratti 17 23.3 8 15.1 9 45.0 Aspiculuris tetraptera 6 8.2 6 11.3 -- -- Syphacia muris 6 8.2 6 11.3 -- -- Heterakis sp umosa 20 27.4 7 13.2 13 65.0 Total de ratas infectadas 61 83.6 41 77.4 20 100 Cuadro 3.
Isolate-specific responses have been reported for at least four helminth species (e.g., Strongyloides ratti [Carter 1986]); experiments which fail to find evidence of genotype-specific responses typically involve incomplete experimental designs and analyses of variation within single, highly inbred laboratory lines (Read and Viney 1996).
Strongyloides ratti: Dissociation of the rat's protective immunity into systemic and intestinal components.
Strongyloides ratti infections in rodents: Value and limitations as a model of human strongyloidiasis.
Strongyloides ratti infections in congenitally hypothymic (nude) mice.
Strongyloides ratti: The effect of betamethasone on the course of infection in rats.
Strongyloides ratti: Structural and functional characteristics of immune damaged worms.
Strongyloides ratti: Reversibility of immune damage to adult worms.