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Frederico Fontanelli Vaz, Lidiane Aparecida Firmino da Silva, Vivian Lindmayer Ferreira, Reinaldo José da Silva, Tânia Freitas Raso
The present study analyzed gastrointestinal helminth communities in 265 wild pigeons (Columba livia) living in the municipalities of São Paulo and Tatuí, state of São Paulo, Brazil, over a one-year period. The birds were caught next to grain storage warehouses and were necropsied. A total of 790 parasites comprising one nematode species and one cestode genus were recovered from 110 pigeons, thus yielding an overall prevalence of 41.5%, mean intensity of infection of 7.2 ± 1.6 (range 1-144) and discrepancy index of 0...
October 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
Tatiana A Makarikova
A previously unrecognised species of hymenolepidid cestode attributable to Vampirolepis Spassky, 1954 is described based on specimens from the common noctule bat Nyctalus noctula (Schreber) (Chiroptera: Vespertilionidae) from southeastern Kazakhstan (Dzungarian Alatau). Specimens of Vampirolepis kulkinae n. sp. differ from the morphologically similar congeners based on the number, size and shape of the rostellar hooks. The new species is further distinguished from additional cestodes attributed to Vampirolepis (sensu lato) by the arrangement of the testes in one row, egg structure (i...
December 5, 2017: Systematic Parasitology
Ning Wang, Xiuqin Zhong, Xingju Song, Xiaobin Gu, Weiming Lai, Yue Xie, Xuerong Peng, Guangyou Yang
BACKGROUND: Echinococcus granulosus is a harmful cestode parasite that causes cystic echinococcosis in humans as well as various livestock species and wild animals. Calmodulin (CaM), a Ca2+ sensor protein, is widely expressed in eukaryotes and mediates a variety of cellular signaling activities. METHODS: In the present study, the cDNA encoding CaM in Echinococcus granulosus (rEgCaM) was successfully cloned and the molecular and biochemical characterizations carried out...
December 4, 2017: Parasites & Vectors
Clément Lagrue, Bronwen Presswell, Nick Dunckley, Robert Poulin
Freshwater ecosystems are often impacted by biological invasions, including the introduction of exotic parasites capable of infecting native species. Here, we report the occurrence of the introduced tapeworm Ligula sp. from common bully, Gobiomorphus cotidianus, and quinnat salmon, Oncorhynchus tshawytscha, in Lake Hawea, South Island, New Zealand. This parasite has a complex life cycle, reaching its adult stage in fish-eating birds. Worms recovered from the body cavity of fish hosts reached huge sizes (60-300 mm long); however, their low prevalence in fish populations suggests that infections are rare or localised...
November 25, 2017: Parasitology Research
Arseny A Makarikov, Valeriy V Stakheev, Vasyl V Tkach
Two new species of hymenolepidid cestodes belonging to the genus Armadolepis Spassky, 1954 are described from dormice (Gliridae) from the southern East European Plain and the northwestern Caucasus, Russia. Armadolepis (Bremserilepis) longisoma n. sp., with a rudimentary, unarmed rostellar apparatus is described from the fat dormouse Glis glis (Linnaeus) from the Republic of Adygeya, Russia. Additionally, A. (Armadolepis) dryomi n. sp., characterised by a well-developed rostellar apparatus and armed rhynchus is described from the forest dormouse Dryomys nitedula Pallas from Rostov Oblast', Russia...
November 22, 2017: Systematic Parasitology
Gustavo Mourglia-Ettlin, Sebastián Miles, Ana Hernández, Sylvia Dematteis
Humoral immunity wanes during healthy ageing, increasing susceptibility to infections in the elderly. In this sense, information about parasite infections and human immunosenescence is scarce. Cystic echinococcosis (CE) is an infectious disease caused by the larval stage of the cestode parasite Echinococcus granulosus, whose prevalence in humans shows an increase with host age. Susceptibility to human CE has been associated with humoral immunity to some extent; and therefore, we have here analyzed the influence of host age on the serological profile of young, middle-aged, and aged patients...
November 21, 2017: Parasite Immunology
Hector H Garcia, Yesenia Castillo, Isidro Gonzales, Javier A Bustos, Herbert Saavedra, Louis Jacob, Oscar H Del Brutto, Patricia P Wilkins, Armando E Gonzalez, Robert H Gilman
OBJECTIVE: To evaluate the diagnostic performance of two commercially available ELISA kits, Novalisa(®) and Ridascreen(®) , for the detection of antibodies to Taenia solium, compared to serological diagnosis of neurocysticercosis (NCC) by LLGP-EITB (electro immunotransfer blot assay using lentil-lectin purified glycoprotein antigens). METHODS: Archive serum samples from patients with viable NCC (n=45) or resolved, calcified NCC (n=45), as well as sera from patients with other cestode parasites (hymenolepiasis, n=45, and cystic hydatid disease, n=45), were evaluated for cysticercosis antibody detection using two ELISA kits, Novalisa(®) and Ridascreen(®) ...
November 21, 2017: Tropical Medicine & International Health: TM & IH
Anna Sulima, Justyna Bień, Kirsi Savijoki, Anu Näreaho, Rusłan Sałamatin, David Bruce Conn, Daniel Młocicki
BACKGROUND: A wide range of molecules are used by tapeworm metacestodes to establish successful infection in the hostile environment of the host. Reports indicating the proteins in the cestode-host interactions are limited predominantly to taeniids, with no previous data available for non-taeniid species. A non-taeniid, Hymenolepis diminuta, represents one of the most important model species in cestode biology and exhibits an exceptional developmental plasticity in its life-cycle, which involves two phylogenetically distant hosts, arthropod and vertebrate...
November 21, 2017: Parasites & Vectors
Giovanni Benelli
Nanomaterials are currently considered for many biological, biomedical and environmental purposes, due to their outstanding physical and chemical properties. The synthesis of gold nanoparticles (Au NPs) is of high interest for research in parasitology and entomology, since these nanomaterials showed promising applications, ranging from detection techniques to drug development, against a rather wide range of parasites of public health relevance, as well as on insect vectors. Here, I reviewed current knowledge about the bioactivity of Au NPs on selected insect species of public health relevance, including major mosquito vectors, such as Aedes aegypti, Anopheles stephensi and Culex quinquefasciatus...
October 29, 2017: Acta Tropica
Sneha H Thakur, Priscilla C Joshi, A B Kelkar, N Seth
Echinococcosis in humans occurs as a result of infection by the larval stages of taenid cestodes of the genus Echinococcus. Most of the intracranial hydatids develop in brain parenchyma. Hydatid cyst within the cerebral ventricle is quite unusual. Literature review showed few case reports of childhood as well as adult intraventricular hydatid cysts. None of these cases presented for the first time with features of ruptured intraventricular cyst. This is a very rare presentation of a common disease. The possibility of infestation with E...
July 2017: Indian Journal of Radiology & Imaging
Mahsa Sadat Makki, Gholamreza Mowlavi, Farideh Shahbazi, Mohammad Reza Abai, Faezeh Najafi, Bibi Razieh Hosseini-Farash, Salma Teimoori, Hamid Hasanpour, Saied Reza Naddaf
BACKGROUND: Hymenolepis diminuta is a cestod of rodents and rarely infects humans. Infection in humans is via ingestion of infected insects. This study was aimed to detect H. diminuta cysticercoids in red flour beetles, Tribolium castaneum, and cockroaches originated from different regions of Iran. METHODS: The red flour beetles and cockroaches were collected from local bakeries in five cities including Tehran, Ahvaz, Kazerun, and Sabzevar during 2010-2011. Some beetles and cockroaches were colonized in insectary and adults from F1 generation were fed on H...
June 2017: Journal of Arthropod-borne Diseases
Kai Feng, Wei Li, Zhihong Guo, Hong Duo, Yong Fu, Xiuying Shen, Cheng Tie, Rijie E, Changqin Xiao, Yanhong Luo, Guo Qi, Ma Ni, Qingmei Ma, Wataru Yamazaki, Ayako Yoshida, Yoichiro Horii, Kinpei Yagi, Nariaki Nonaka
For field-identification of taeniid cestodes in canine animals in Tibetan area, loop-mediated isothermal amplification (LAMP) assays for Echinococcus multilocularis, E. shiquicus, Taenia hydatigena, T. multiceps, T. pisiformis and T. crassiceps were developed and evaluated along with the reported assay for E. granulosus. The LAMP assays showed specific reaction with their corresponding target species DNA with the detection limit of 1 to 10 pg. Moreover, the assays for E. granulosus, E. multilocularis, T. hydatigena and T...
October 23, 2017: Journal of Veterinary Medical Science
Érica Munhoz Mello, Luis Fernando Viana Furtado, Élida Mara Leite Rabelo, Hudson Alves Pinto
The existence of cryptic species in the genus Hydatigera, cyclophillid cestodes, mainly of felids, was recently described based on molecular studies of parasites from Asia, Europe and Africa. However, the occurrence of H. taeniaeformis sensu stricto (s.s.), the species more widely distributed and with a presumed specificity for murid rodents as intermediate hosts, has not been formally described in Americas. In the present study, during necropsy of an Ingram's squirrel specimen, Guerlinguetus ingrami, found dead in the municipality of Belo Horizonte, Minas Gerais state, Brazil, strobilocerci were found in the liver...
October 18, 2017: Parasitology International
Lesley R Smales
Unidentified cestodes and 14 species of nematode and larvae that could not be placed to family level, were collected from the digestive tracts of 27 individuals of Paramelomys lorentzii, four of Mammelomys lanosus and a single M. rattoides from Papua New Guinea and Papua Indonesia. Of these three were new species. Hughjonestrongylus woolleyae sp. nov. can be distinguished from its congeners in having up to 26 ridges in the synlophe and a dissymmetric dorsal ray. Parvinema bafunminensis gen. nov., sp. nov. can be distinguished from all other genera in the family by the combination of features in the synlophe; with a carene, up to 17 ridges, and the pattern of ridge sizes...
December 20, 2017: Acta Parasitologica
Divya Aggarwal, Vaibhav Girotra, Neelam Wadhwa, Manish Chadha
Hydatid disease is an infrequent parasitic infestation caused by cestode, most commonly, Echinococcus granulosus. Bone involvement is distinctly uncommon. We would like to share our experience of a rare case of hydatid disease of femur in a 24-year-old male who presented with nonunion of subtrochanteric fracture. Histopathology showed typical lamellated wall and dagger-shaped hooklets. In view of its rarity, hydatid disease often remains an unsuspected infection of the bone.
January 2017: Journal of Family Medicine and Primary Care
Martina Rudelius, Klaus Brehm, Martin Poelcher, Christoph Spinner, Andreas Rosenwald, Clarissa Prazeres da Costa
Introduction. Correct diagnosis of peritoneal infectious disease can be extremely difficult due to non-specific clinical features. Thus, careful assessment with thorough histopathological work-up is essential. Here, we report the first case of human peritoneal cysticercosis mimicking peritoneal carcinosis. Case presentation. The patient presented with recurring ascites and a tumour in the Douglas cavity accompanied by elevated tumour markers. There were no signs of systemic infection. On laparoscopy, the tumour was resected completely...
June 2017: JMM Case Reports
M A Tripodi, D Hancke, O V Suarez
The overall goal of this study was to use the Rattus spp./Hymenolepis diminuta model to assess environmental lead pollution in different landscape units of an urban ecosystem. Rats of the genus Rattus were collected from three shanty towns and three residential neighbourhoods of the city of Buenos Aires. Concentrations of lead in the livers of wild rats and in their parasite H. diminuta were measured using inductively coupled plasma mass spectrometry (ICP-MS). The landscape unit and tissue type had a significant effect on lead concentration, being higher in residential neighbourhoods as well as in H...
October 11, 2017: Journal of Helminthology
Claudio Muro, Luis A Gomez-Puerta, Robert H Flecker, Ricardo Gamboa, Percy Vilchez Barreto, Pierre Dorny, Victor C W Tsang, Robert H Gilman, Armando E Gonzalez, Hector H Garcia Lescano, Seth E O'Neal, For The Cysticercosis Working Group In Peru
The lentil lectin glycoprotein enzyme-linked immunoelectrotransfer blot (LLGP EITB, reported sensitivity 99% and specificity 100%) is used as a serologic marker of exposure to Taenia solium in pigs. However, only a limited number of parasites have been evaluated for cross reactivity. Pigs may host other related cestode infections, including Taenia hydatigena, which have not been formally evaluated for cross-reactions. We investigated a corral in Tumbes, Peru, a region where a cysticercosis elimination demonstration project was completed in 2012...
October 2, 2017: American Journal of Tropical Medicine and Hygiene
Weisi Wang, Jun Li, Junmin Yao, Tian Wang, Shizhu Li, Xueting Zheng, Liping Duan, Wenbao Zhang
Objectives: Cystic echinococcosis (CE), caused by the cestode Echinococcus granulosus, is a worldwide chronic zoonosis. Current chemotherapeutic options are limited to albendazole and mebendazole, which only exert parasitostatic effects and have to be administered at high dosages for long periods. In an effort to find alternative treatment options, the in vitro and in vivo efficacies of novel carbazole aminoalcohols were evaluated. Methods: Carbazole aminoalcohols were tested against E...
November 1, 2017: Journal of Antimicrobial Chemotherapy
L C Oliveira, F C R Oliveira, N B Ederli
A new species of cestode of the genus Fuhrmannetta found in the small intestine of Cerradomys goytaca is described herein, named Fuhrmannetta jurubatensis n. sp. Rodents were collected from the sand-plains areas of the northern coast of the State of Rio de Janeiro, Brazil. Morphological analyses were conducted by light and scanning electron microscopy. From the morphological analysis and a comparison with the known species of the genus, F. jurubatensis n. sp. can be identified by a combination of morphological and morphometrical characteristics, including strobila length, number and length of rostellar hooks, position of the genital pore and the number of eggs per uterine capsule...
October 4, 2017: Journal of Helminthology
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