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Parasitology Research

Petras Prakas, Viktorija Kirillova, Rafael Calero-Bernal, Muza Kirjušina, Eglė Rudaitytė-Lukošienė, Miguel Ángel Habela, Inese Gavarāne, Dalius Butkauskas
Various muscle tissue samples from 60 moose (Alces alces) in the Baltic region were examined for Sarcocystis species. Sarcocysts were detected in 49 out of 60 (81.7%) moose investigated. Six species, Sarcocystis alces, Sarcocystis hjorti, Sarcocystis linearis, Sarcocystis silva, Sarcocystis ovalis, and Sarcocystis sp., were identified using light microscopy (LM), and DNA sequence analysis (cox1 and 18S rDNA). Sarcocysts of S. alces, S. ovalis, and S. hjorti were studied using transmission electron microscopy (TEM); sarcocyst walls of S...
March 21, 2019: Parasitology Research
Fangfang Wang, Haiyan Gong, Houshuang Zhang, Yongzhi Zhou, Jie Cao, Jinlin Zhou
Heat shock cognate 70-kDa protein (RH-Hsc70) was identified from a cDNA library synthesized from the sialotranscriptomes of unfed and fed Rhipicephalus haemaphysaloides. The RH-Hsc70 open reading frame is 1950 bp long and encodes a protein that is 649 amino acids in length, with a predicted molecular weight of 71.1 kDa and a theoretical pI of 5.43. RH-Hsc70 exhibits 98% amino acid identity with Hsc70 in Haemaphysalis flava and 83% identity with Hsc70 in arthropods and mammals. RH-Hsc70 was mainly expressed in nymphs and adult ticks, not in larvae...
March 19, 2019: Parasitology Research
Ellen Schoener, Carina Zittra, Stefan Weiss, Gernot Walder, Bita Shahi Barogh, Stefanie Weiler, Hans-Peter Fuehrer
Systematic, continuous mosquito surveillance is considered the most reliable tool to predict the spread and establishment of alien mosquito species such as the Asian tiger mosquito (Aedes albopictus), Japanese bush mosquito (Aedes japonicus), and the transmission risk of mosquito-borne arboviruses to humans. Only single individuals of Ae. albopictus have been found in Austria so far. However, it is likely that the species will be able to establish populations in the future due to global trade and traffic as well as increasing temperatures in the course of global climate change...
March 16, 2019: Parasitology Research
Jerusha Bennett, Fátima Jorge, Robert Poulin, Haseeb Randhawa
Parasites are important components of natural systems, and among their various roles, parasites strongly influence the flow of energy between and within food webs. Over 1000 tapeworm species are known to parasitise elasmobranchs, although full life cycles are resolved for fewer than 10 of them. The lack in resolution stems from the inability to distinguish larval from adult stages using morphology alone. Molecular elucidation of trophic transmission pathways is the next step in understanding the role of hosts and parasites within food webs...
March 15, 2019: Parasitology Research
Diana Bărburaș, Adriana Gyӧrke, Angela Monica Ionică, Remus Bărburaș, Viorica Mircean, Vasile Cozma
Neospora caninum is a heteroxenous parasitic Apicomplexan protozoan, able to infect a variety of domestic and wild animals, mainly associated with reproductive disorders and abortions in susceptible species. Considering the importance of Romania in the European buffalo industry and the severe economic losses caused by N. caninum infection in livestock, the aim of the present study was to assess the occurrence of neosporosis in buffaloes raised in household and farming systems in northwestern Romania. Overall, 197 serum samples were tested for the presence of N...
March 15, 2019: Parasitology Research
Vanessa da Silva Ribeiro, Henrique Tomaz Gonzaga, Daniela da Silva Nunes, Luiz Ricardo Goulart, Julia Maria Costa-Cruz
Herein, we evaluate a mimotope-based synthetic peptidenamed NC4 1 to diagnose neurocysticercosis (NC), a neglected parasitic disease and a major cause of epilepsy worldwide. NC4 1 synthetic peptide was evaluated to diagnose NC, and total saline extract from Taenia solium metacestodes (SE) was used as control. Serum samples from patients with NC (n = 40), other parasitic diseases (n = 43), and healthy individuals (n = 40) were tested. Diagnostic parameters such as sensitivity (Se), specificity (Sp), likelihood ratio (LR), and area under curve (AUC) were calculated using receiver operating characteristic (ROC) curves...
March 15, 2019: Parasitology Research
David Ebmer, Maria José Navarrete, Pamela Muñoz, Luis Miguel Flores, Ulrich Gärtner, Anja Taubert, Carlos Hermosilla
Antarctophthirus microchir is a sucking louse species belonging to the family Echinophthiriidae and has been reported to parasitize all species of the subfamily Otariinae, the sea lions. Former studies on this ectoparasite mainly required fixation, immobilization, or death of host species and especially examinations of adult male sea lions are still very rare. Between March and May 2018, adult individuals of a unique "urban" bachelor group of South American sea lions (Otaria flavescens) living directly in the city of Valdivia, Chile, were studied regarding their ectoparasite infestation status...
March 14, 2019: Parasitology Research
Vikrant Sudan, Rahul Kumar, Daya Shanker, Sanjhi Paliwal
Sarcocystis tenella is a common tissue coccidian parasite of sheep. It is reported worldwide with high prevalence rate ranging from 9 to 100%. However, there are very limited reports of this parasite from the Indian context and those reports are totally based on the morphology alone. When it comes to molecular characterization, such studies are absent from India. The present communication reports the first characterization study of S. tenella from India. 18S rRNA ribosomal gene and mitochondrial cytochrome c oxidase subunit I (cox1) genes were used for molecular characterization and phylogenetic analysis alongside standard histopathology of sarcocysts...
March 13, 2019: Parasitology Research
Mathias Hofmann, Adnan Hodžić, Niki Pouliou, Anja Joachim
Canine pathogens transmitted by blood-sucking arthropods are of significant importance for veterinary and, in some cases, human health. However, they are still underestimated and rarely investigated in many parts of the Mediterranean region, mostly due to financial reasons. Therefore, in the present paper, we investigated the occurrence of blood-associated pathogens affecting dogs in Crete, Greece. For this purpose, blood samples from 103 shelter dogs were screened for the pathogens by PCR and serological tests...
March 13, 2019: Parasitology Research
Viacheslav V Dolgikh, Alexander A Tsarev, Sergey A Timofeev, Vladimir S Zhuravlyov
The secretion of hexokinases (HKs) by microsporidia followed by their accumulation in insect host nuclei suggests that these enzymes play regulatory and catalytic roles in infected cells. To confirm whether HKs exert catalytic functions in insect cells, we expressed in E. coli the functionally active HKs of two entomopathogenic microsporidia, Nosema bombycis and Nosema ceranae, that cause silkworm and honey bee nosematoses. N. bombycis HK with C-terminal polyHis tag and N. ceranae enzyme with N-terminal polyHis tag were cloned into pOPE101 and pRSET vectors, respectively, and overexpressed...
March 13, 2019: Parasitology Research
Gokmen Zafer Pekmezci, Banu Yardimci
Anisakis and Contracaecum species are fish borne zoonotic nematodes. In our previous studies, other larval anisakid and raphidascarid nematodes, Anisakis and Hysterothylacium species, were genetically identified in marine fish from Turkish waters. However, there is no information on molecular identification of larval Contracaecum species in marine fish from Turkey. Therefore, the aim of this study was only to investigate the presence and molecular identification of Contracaecum species in commonly commercialized marine fish from Turkish waters...
March 13, 2019: Parasitology Research
Jerusha Bennett, Bronwen Presswell
Trematodes of the genus Philophthalmus are cosmopolitan parasites that infect the eyes of birds and mammals. They have the potential to affect the survival of their hosts and a few cases of human philophthalmiasis have occurred worldwide. Adults of known Philophthalmus species have never been recorded from bird hosts in New Zealand, despite their cercarial stage being a focus of various studies. Here, we describe a new species of Philophthalmus infecting New Zealand red-billed and black-backed gulls, Philophthalmus attenuatus n...
March 12, 2019: Parasitology Research
Mario Santoro, Erica Marchiori, Doriana Iaccarino, Barbara Degli Uberti, Rudi Cassini, Fabio Di Nocera, Anna Cerrone, Giorgio Galiero, Federica Marcer
Sulcascaris sulcata Rudolphi 1819 is a gastric nematode parasite of sea turtles. Here, we report the occurrence and describe for the first time the pathological changes caused by S. sulcata in the Mediterranean loggerhead sea turtle (Caretta caretta) stranded along the Tyrrhenian coast and northern Adriatic coast of Italy. Prevalence of infection was significantly higher in loggerhead sea turtles from the Adriatic Sea. Both prevalence and abundance of infection showed an increasing trend along with host age classes from both geographical localities...
March 11, 2019: Parasitology Research
Ana Carolina Miura, Luiz Daniel de Barros, Fernanda Pinto Ferreira, José Mauricio Ferreira Neto, Patricia M L Sicupira Franco, Chunlei Su, Odilon Vidotto, João Luis Garcia
The present study aimed to isolate and genotype strains of T. gondii from pigs slaughtered for human consumption in South Brazil. Blood and tissues (heart, diaphragm, liver, tongue, and masseter) from 400 animals were collected at two slaughterhouses. Sera were obtained, and antibodies against T. gondii were detected by both indirect fluorescence antibody test (IFAT) and modified agglutination test (MAT). The tissues of animals that tested positive in MAT, IFAT, or both (cut-off ≥ 64) were bioassayed. Twenty-six (6...
March 9, 2019: Parasitology Research
Kelsey L Froelich, Ronald L Reimink, Sydney P Rudko, Aaron P VanKempen, Patrick C Hanington
Swimmer's itch has historically been controlled by applying copper sulfate (CuSO4 ) to lakes as a way to eliminate snails that serve as the intermediate hosts for swimmer's itch-causing parasites. CuSO4 is still sometimes applied specifically to areas of lakes where swimmer's itch severity is high. It is unclear whether targeted application of chemical molluscicides like CuSO4 is effective for controlling swimmer's itch. Previous research has found that the larval stage of the parasites responsible for swimmer's itch are released from infected snails and are concentrated by onshore and alongshore winds, and thus, may not be affected by such focused applications...
March 8, 2019: Parasitology Research
Serita van der Wal, Joachim T Haug
No abstract text is available yet for this article.
March 8, 2019: Parasitology Research
G G Alowanou, P A Olounladé, G C Akouèdegni, A M L Faihun, D O Koudandé, S Hounzangbé-Adoté
Gastrointestinal nematodes remain a major constraint on the health, welfare, and production of small ruminants. This study was conducted to evaluate three plant extracts (from Bridelia ferruginea, Combretum glutinosum, and Mitragyna inermis) as effective remedies against gastrointestinal parasites of small ruminants. Phytochemical screening was conducted on the plant leaves, and the potential anthelmintic properties of these plants were tested in vitro on Haemonchus contortus using the egg hatch, larval migration, and adult worm motility assays...
March 8, 2019: Parasitology Research
Cecilia G Barbosa, César Gómez-Hernández, Karine Rezende-Oliveira, Marcos Vinicius Da Silva, João Paulo Ferreira Rodrigues, Monique G S Tiburcio, Thatiane Bragini Ferreira, Virmondes Rodrigues, Nobuko Yoshida, Luis E Ramirez
Oral infection by Trypanosoma cruzi has been responsible for frequent outbreaks of acute Chagas disease in the north of South America and in the Amazon region, where T. cruzi genetic group TcI predominates. TcI strains from different geographical regions have been used in oral infection in mice, but there is no information about strains from Mexico where TcI is prevalent. Here, we analyzed four Mexican strains as concerns the course of oral infection, the ability to invade host cells in vitro, and the profile of metacyclic trypomastigote surface molecules gp82 and gp90 that are implicated in parasite internalization...
March 8, 2019: Parasitology Research
Magdaléna Bruňanská, Martina Matoušková, Jana Nebesářová, John S Mackiewicz, Larisa G Poddubnaya
Spermiogenesis in progenetic and adult stages of Archigetes sieboldi Leuckart, 1878, a tapeworm parasitic in oligochaetes and fish respectively, has been examined using transmission electron microscopy and cytochemical staining for glycogen. General pattern of spermiogenesis is essentially like that of other caryophyllideans, i.e., apical dense material in the zone of differentiation in the early stages of spermiogenesis, rotation of free flagellum and a flagellar bud, and proximo-distal fusion. Interestingly, rotation of a free flagellum and flagellar bud to the median cytoplasmic process (MCP) has been observed unconventionally at > 90° only in progenetic stages...
March 7, 2019: Parasitology Research
Kaili Deng, Jin Cui, Yong Qin, Yina Zhu, Ganzhu Feng
Sparganosis is a parasitic infection caused by the metacestode stage of Spirometra mansoni and some other related diphyllobothriidean cestodes. Although various internal organs were involved in sparganum infection, pulmonary and pleural involvement is rarely reported. We herein report an uncommon form of sparganosis manifested by pleuritis and decreased peripheral blood eosinophils. Sparganum worms were found in the pleural effusion accidentally and confirmed by pathological diagnosis. After being treated with praziquantel for 10 days, the patient's symptoms, laboratory examinations, and imaging findings were improved gradually...
March 7, 2019: Parasitology Research
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