Hymenolepis nana is a cestode with an unusual life cycle, incorporating direct, indirect and autoinfective stages. This case series represents the first reported outbreak of H. nana cestodiasis in white-tailed antsangies, summarizing macroscopic and histological findings in four cases. On post-...
Hymenolepis diminutaGravidproglottidMatureproglottidHymenolepis nanapf heScolexEggU 缩小 …膜壳绦虫生活史A =Infective StageA =Diagnostic StageOncospheres hatch andpenetrate intestinal wallIngested by an arthropod intermediate host gravid proglottidsAdults in small intestineEggs passed in fege5 scolex ...
nana, which has a direct lifecycle (no intermediate host is needed); animal hosts of other Hymenolepis species utilize insect intermediate hosts. Infective eggs containing a hexacanth embryo or oncosphere are released to the intestine after disintegration of the proglottid [55]. The cysticerco...
nana (von Siebold, 1852) and H. microstoma, is underpinned by an extensive literature that includes much of our classical knowledge of tapeworm biology [e.g. [2]]. A recently initiated effort sponsored by The Wellcome Trust Sanger Institute to characterize the genome and adult and larval ...
Rodentolepis nana ranges in size from 25 to 40 mm in length and is usually found in the small intestine. The host range includes mice, rats, nonhuman primates, and humans, but host-specificity is uncertain. It has been postulated that the human strain of R. nana may be non-infective ...
Hymenolepis nana is unusual in that it can undergo a direct or indirect lifecycle. With respect to the former,H. nanais able to undergo autoinfection within the definitive host, where the oncosphere produces an infective cysticercoid that is able to develop within intestinal villus and mature...
The cestode,Hymenolepis nana, also called the dwarf tapeworm, causes hymenolepiasis, which is usually asymptomatic. Some weakness, headache, anorexia, and abdominal pain may occur. When passed in the stool, the eggs are infective and are ingested by beetles or flies, which serve as intermedia...
Humans are the natural host forH. nana, which has a direct lifecycle (no intermediate host is needed); animal hosts of otherHymenolepisspecies utilize insect intermediate hosts. Infective eggs containing a hexacanth embryo or oncosphere are released to the intestine after disintegration of the pr...
nana, which has a direct lifecycle (no intermediate host is needed); animal hosts of other Hymenolepis species utilize insect intermediate hosts. Infective eggs containing a hexacanth embryo or oncosphere are released to the intestine after disintegration of the proglottid [55]. The cysticerco...
Hymenolepiasis is, in fact, caused by two cestodes species,H. diminuta, the rat tapeworm, andH. nana, the dwarf tapeworm. In humans, infection withH. nanais much more common than infection withH. diminuta. H. nanais probably the tapeworm encountered most in humans, since it can be dir...