| discrimination of the larval stages of echinococcus oligarthrus (diesing, 1863) and e. vogeli rausch and bernstein, 1972 (cestoda: taeniidae). | rostellar hooks of protoscolices from known larval stages of echinococcus oligarthrus (diesing, 1863) and e. vogeli rausch and bernstein, 1972 were compared to determine whether morphologic differences could be defined. the large and small hooks, respectively, of the two species were found to differ significantly in length (p = less than 0.0001) as well as in relative proportions. host-related variation in lengths of hooks was not observed. dimensions of the rostellar hooks were found to provide ... | 1978 | 727324 |
| orbital hydatid cyst of echinococcus oligarthrus in a human in venezuela. | this study reports the first known case of human hydatid disease caused by the larval stage of echinococcus oligarthrus. the patient, a native venezuelan female, presented a single cyst localized intraorbitally behind the left eye (retroocular), which was discovered by computed tomography. the cyst was removed by surgery, and after parasitological studies it was identified as an e. oligarthrus hydatid cyst. this is also the first case of intraorbital hydatid cyst in humans in venezuela. | 1989 | 2723931 |
| echinococcus oligarthrus (diesing, 1863) from geoffroy's cat (felis geoffroyi d'orbigny y gervais) in temperate south america. | | 1973 | 4760646 |
| [presence in costi rica of echinococcus oligarthrus diesing 1863, collected in the small intestine of felis concolor costaricensis]. | | 1973 | 4781534 |
| observations on the life-cycle of echinococcus oligarthrus (diesing, 1863) in the republic of panama. | | 1969 | 4984494 |
| development of adult echinococcus oligarthrus from hydatids of naturally infected agoutis. | | 1970 | 5413844 |
| echinococcus oligarthrus (diesing, 1863) developing in a united states zoo. | | 1968 | 5757672 |
| echinococcus oligarthrus (diesing, 1863) from a panamanian jaguar (felis onca l.). | | 1967 | 6062052 |
| the taxonomic status of echinococcus cruzi brumpt and joyeux, 1924 (cestoda: taeniidae) from an agouti (rodentia: dasyproctidae) in brazil. | paratype material of echinococcus cruzi brumpt and joyeux, 1924, described from an agouti, dasyprocta leporina (l.), in brazil, was compared with echinococcus oligarthrus (diesing, 1863), of which the larval stage occurs also in agoutis and other rodents in south america and central america. comparisons of the larval cestodes (metacestodes) showed that the rostellar hooks from protoscolices of the two taxa corresponded in form, and their slightly greater lengths in e. cruzi were considered to be ... | 1984 | 6470893 |
| echinococcus oligarthrus cysts of rabbits in venezuela. | | 1984 | 6527179 |
| second recorded case of human infection by echinococcus oligarthrus. | the paper reviews a previously published case of hydatid disease in the human heart of a brazilian person who died of tetanus. based on present knowledge about the distinguishing characteristics of echinococcus granulosus, e. vogeli, and e. oligarthrus, it was recognized that the infection was due to e. oligarthrus, mainly based the morphologic features of the hooklets of the protoscolex. this is the second human infection due to e. oligarthrus and the first showing wall features of cysts. there ... | 1995 | 7856823 |
| presence of echinococcus oligarthrus (diesing, 1863) lühe, 1910 in lynx rufus texensis allen, 1895 from san fernando, tamaulipas state, in north-east mexico. | a bobcat was found recently killed on "highway 101" near the town of san fernando, tamaulipas state, mexico (100 km south of brownsville, tx, u.s.a.). the cat (lynx rufus texensis) was parasitized by several species of nematodes and trematodes, but mainly by a cestode, echinococcus oligarthrus. the diagnostic characteristics of this cestode are described and illustrated. e. oligarthrus has not been reported previously in north america. this is the first time that the strobilar stage has been rec ... | 1996 | 8894772 |
| aspiration cytology of echinococcus oligarthrus. a case report. | fine needle aspiration cytology is a useful technique in the diagnosis of several parasitic infections. the present case highlights the aspiration cytology findings in a case of echinococcus oligarthrus infection, a rare variant of the echinococcus species affecting humans. to the best of our knowledge, this is the first case report on the cytology of e oligarthrus in english. | 1997 | 9100796 |
| echinococcus oligarthrus. | | 1998 | 9755689 |
| neotropical echinococcosis in suriname: echinococcus oligarthrus in the orbit and echinococcus vogeli in the abdomen. | this paper reports two cases of neotropical echinococcosis caused by echinococcus oligarthrus and e. vogeli, neither of which has been reported from suriname. case 1, a six-year-old boy, presented a 15 x 25 mm retro-ocular cystic tumor (observed by ultrasound, computed tomography scan, and magnetic resonance imaging) causing exophthalmia, chemosis, palpebral ptosis, and blindness of the left eye. of two tentative diagnoses, echinococcus cyst or dermoid tumor, the former was shown to be correct a ... | 1998 | 9840599 |
| its-1 ribosomal dna sequence variants are maintained in different species and strains of echinococcus. | this study investigated sequence heterogeneity in the first internal transcribed spacer (its-1) of ribosomal dna within and among species and strains of echinococcus. different its-1 sequence variants exist in echinococcus granulosus and echinococcus multilocularis, which represent at least four evolutionary lineages: (1) a sheep strain-lineage of e. granulosus, (2) a sister lineage of a cervid and camel e. granulosus its-1 variants, (3) a lineage including the its-1 variants representing horse, ... | 2000 | 10704599 |
| submandibular hydatid cyst caused by echinococcus oligarthrus. | an unusual case of echinococcus oligarthrus infestation of the submandibular salivary gland is reported. echinococcus oligarthrus is a rare variant of the echinococcus species affecting humans. to the best of our knowledge only one case of submandibular hydatid cyst caused by echinococcus oligarthrus has been reported. a 28-year-old female patient was admitted with a progressively increasing swelling in the left submandibular region of four years' duration. there was no pulmonary or hepatic invo ... | 2000 | 10962688 |
| erroneous reports of the neotropical echinococcus oligarthrus as a cause of echinococcosis in india. | two cases of submandibular echinococcosis have been reported in adult residents of india (kini et al., 1997; sahni et al., 2000). it was stated in both publications that the cestode was e. oligarthrus, "a rare variety of e. granulosus", based on morphogical characteristics. it was also mentioned that 3 cases of e. granulosus with similar submandibular metacestode had been previously diagnosed in india. the metacestode is readily distinguishable from that of e. oligarthrus. the final hosts of e. ... | 2004 | 15040698 |
| polycystic echinococcosis of the orbit. | to report a case of polycystic echinococcosis of the orbit caused by echinococcus oligarthrus. | 2005 | 16139021 |
| searching for antigen b genes and their adaptive sites in distinct strains and species of the helminth echinococcus. | twenty-seven pcr-derived antigen b (agb) nucleotide sequences from four echinococcus species (echinococcus granulosus, echinococcus multilocularis, echinococcus oligarthrus and echinococcus vogeli) were aligned with 78 already published sequences, to generate a maximum likelihood phylogeny of the agb multigene family. the phylogenetic analysis confirms that the family is constituted by four groups of genes present in each one of the four species (agb1, agb2, agb3 and agb4), and suggests that it ... | 2006 | 16207536 |
| emergence of polycystic neotropical echinococcosis. | echinococcosis is a parasitic zoonosis of increasing concern. in 1903, the first cases of human polycystic echinococcosis, a disease resembling alveolar echinococcosis, emerged in argentina. one of the parasites responsible, echinococcus oligarthrus, had been discovered in its adult strobilar stage before 1850. however, >100 years passed from the first description of the adult parasite to the recognition that this species is responsible for some cases of human neotropical polycystic echinococcos ... | 2008 | 18258123 |
| new aspects of neotropical polycystic (echinococcus vogeli) and unicystic (echinococcus oligarthrus) echinococcosis. | of the four species of the genus echinococcus (cestoda) distinguished by biological and morphological characteristics, two species, e. vogeli and e. oligarthrus, occur widely in the neotropics. approximately 200 cases of polycystic echinococcosis (pe) have been recorded from 12 countries in south america. following early proliferation of e. vogeli in the human host, typically in the liver, the metacestode usually spreads in the peritoneal and pleural cavities, and numerous organs may be invaded. ... | 2008 | 18400802 |
| echinococcus oligarthrus cystic hydatidosis in brazilian agouti (dasyprocta leporina). | echinococcus oligarthrus hydatid cyst disease was diagnosed in two imported wild-caught brazilian agouti (dasyprocta leporina). the cysts were found incidentally during routine examinations and never appeared to cause any apparent clinical signs. identification of the cysts was confirmed via histopathology. over a period of 2 yr, the cysts calcified but did not reabsorb. treatment with praziquantal and albendazole did not appear to affect the cysts. agoutis are intermediate hosts of e. oligarthr ... | 2009 | 19746872 |
| phylogenetic relationships within echinococcus and taenia tapeworms (cestoda: taeniidae): an inference from nuclear protein-coding genes. | the family taeniidae of tapeworms is composed of two genera, echinococcus and taenia, which obligately parasitize mammals including humans. inferring phylogeny via molecular markers is the only way to trace back their evolutionary histories. however, molecular dating approaches are lacking so far. here we established new markers from nuclear protein-coding genes for rna polymerase ii second largest subunit (rpb2), phosphoenolpyruvate carboxykinase (pepck) and dna polymerase delta (pold). bayesia ... | 2011 | 21907295 |
| fatal echinococcosis in three lemurs in the united kingdom--a case series. | tapeworms of the genus echinococcus reside in the small intestine of a number of carnivorous species, predominantly canids. in enzootic areas, hydatidosis caused by taeniid metacestodes can present a significant problem in accidental intermediate hosts, including humans. whereas the united kingdom is currently considered free of echinococcus multilocularis, echinococcus granulosus sensu stricto (s.s.) and echinococcus equinus are endemic in the uk and have been reported in a variety of captive m ... | 2016 | 26872922 |
| laboratory diagnosis of echinococcus spp. in human patients and infected animals. | among the species composing the genus echinococcus, four species are of human clinical interest. the most prevalent species are echinococcus granulosus and echinococcus multilocularis, followed by echinococcus vogeli and echinococcus oligarthrus. the first two species cause cystic echinococcosis (ce) and alveolar echinococcosis (ae) respectively. both diseases have a complex clinical management, in which laboratory diagnosis could be an adjunctive to the imaging techniques. to date, several appr ... | 2017 | 28212789 |
| historical aspects of echinococcosis. | echinococcosis is a zoonosis whose history dates back to antiquity. this article provides an overview on the general history of echinococcosis, including the elucidation of echinococcus life cycles and the long controversy on the aetiology of the cystic and alveolar forms of echinococcosis (ce and ae), lasting about 100years since the middle of the 19th century. furthermore, selected historical aspects of some fields of echinococcosis research are discussed and compared with our current knowledg ... | 2017 | 28131361 |
| phylogenetic systematics of the genus echinococcus (cestoda: taeniidae). | echinococcosis is a serious helminthic zoonosis in humans, livestock and wildlife. the pathogenic organisms are members of the genus echinococcus (cestoda: taeniidae). life cycles of echinococcus spp. are consistently dependent on predator-prey association between two obligate mammalian hosts. carnivores (canids and felids) serve as definitive hosts for adult tapeworms and their herbivore prey (ungulates, rodents and lagomorphs) as intermediate hosts for metacestode larvae. humans are involved a ... | 2013 | 23872521 |
| mitochondrial and nuclear sequence polymorphisms reveal geographic structuring in amazonian populations of echinococcus vogeli (cestoda: taeniidae). | to date, nothing is known about the genetic diversity of the echinococcus neotropical species, echinococcus vogeli and echinococcus oligarthrus. here we used mitochondrial and nuclear dna sequence polymorphisms to uncover the genetic structure, transmission and history of e. vogeli in the brazilian amazon, based on a sample of 38 isolates obtained from human and wild animal hosts. we confirm that the parasite is partially synanthropic and show that its populations are diverse. furthermore, signi ... | 2012 | 23149245 |
| anatomo-clinical and molecular description of liver neotropical echinococcosis caused by echinococcus oligarthrus in human host. | since humans rarely play the role as echinococcus oligarthrus host, there is lack of knowledge about the complex infectious process. only three cases have been reported to occur in humans in the neotropics until now. we present the anatomo-clinical and molecular findings describing a new case of infection by e. oligarthrus in a man. the muscular or subcutaneous tissues tropism described for this species in the previously reported cases was not present, but a liver tropism was observed. additiona ... | 2013 | 23010160 |
| echinococcus oligarthrus in the subtropical region of argentina: first integration of morphological and molecular analyses determines two distinct populations. | echinococcosis is a parasitic zoonosis that is considered as a neglected disease by the world health organization. the species echinococcus oligarthrus is one of the causative agents of neotropical echinococcosis, which is a poorly understood disease that requires a complex medical examination, may threaten human life, and is frequently associated with a low socioeconomic status. morphological and genetic diversity in e. oligarthrus remains unknown. the aim of this work is to identify and charac ... | 2017 | 28433410 |