RESUMEN
Molineus torulosus (Molin, 1861) parasite of Cebus spp. from South America is redescribed in Cebus apella and C. olivecaeus (new host) from French Guyana with emphasis on the synlophe. During the maturation process, the larvae dwelt in the cysts carved alongside the external part of the small intestine. The turn-out of the mature worms and the laid eggs depended on the tissular organisation of cyst walls as the inflammatory process waned and fibrosis progressed to seal the cystic lumen. Adult worms entwine themselves in the cysts, live there permanently as their presence has never been evidenced in the intestinal lumen. They copulated, laid eggs, degenerated and died once entrapped by the fibrotic process. Laid eggs released in the intestinal lumen through a narrow channel ensured the continuation of the developmental cycle. However, erratic migration was possible via the vascular channels surrounding the cysts.
Asunto(s)
Cebus/parasitología , Parasitosis Intestinales/veterinaria , Enfermedades de los Monos/parasitología , Trichostrongyloidea/aislamiento & purificación , Tricostrongiloidiasis/veterinaria , Animales , Quistes/parasitología , Quistes/patología , Quistes/veterinaria , Femenino , Fibrosis , Guyana Francesa/epidemiología , Inflamación , Parasitosis Intestinales/epidemiología , Parasitosis Intestinales/parasitología , Parasitosis Intestinales/patología , Masculino , Enfermedades de los Monos/epidemiología , Reproducción , Trichostrongyloidea/anatomía & histología , Trichostrongyloidea/clasificación , Trichostrongyloidea/crecimiento & desarrollo , Tricostrongiloidiasis/epidemiología , Tricostrongiloidiasis/parasitología , Tricostrongiloidiasis/patologíaRESUMEN
A retrospective study was done to determine the presence of abdominal angiostrongyliasis in Nicaragua. Twelve cases of this parasitic disease were found among 48 visceral specimens: small intestine, liver and testes. The patients with intestinal lesions presented symptoms of an acute abdomen, and in some instances, a tumor-like mass was palpated in the lower right quadrant. A thickening of the intestinal wall accompanied by necrosis and perforation were the most important macroscopic findings. One patient with hepatic localisation of Angiostrongylus costaricencis displayed a clinical picture of visceral larva migrans-like syndrome. The chief laboratory findings were leukocytosis and eosinophilia. The histopathological examination showed granulomas and heavy eosinophilic infiltration around the eggs and larvae of A. costaricencis. Also, an adult worm was seen in one biopsy.