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Parasitology International

Daigo Tsubokawa, Kenji Ishiwata, Yukinobu Goso, Takeshi Nakamura, Takeshi Hatta, Kazuhiko Ishihara, Hirotaka Kanuka, Naotoshi Tsuji
Mucin is a major component of mucus in gastrointestinal mucosa. Increase of specific sialomucins having Sd(a) blood group antigen, NeuAcα2-3(GalNAcβ1-4)Galβ1-4GlcNAcβ-, is considered to be associated with expulsion of the parasitic intestinal nematode Nippostrongylus brasiliensis. In this study, we examined the relationship between interleukin (IL)-13 pathway and expression of Sd(a)-sialomucins in small intestinal mucosa with N. brasiliensis infection. Nematode infection induced marked increases in small intestinal mucins that reacted with anti-Sd(a) antibody in wild type (wt) mice...
August 9, 2017: Parasitology International
Luiz A E Pollo, Milene H de Moraes, Júlia Cisilotto, Tânia B Creczynski-Pasa, Maique W Biavatti, Mario Steindel, Louis P Sandjo
Drugs containing the1,4-dihydropyridine (DHP) core have recently attracted attention concerning their antiparasitic effect against various species of Leishmania and Trypanosoma. This approach named drugs repositioning led to interesting results, which have prompted us to prepare 21 DHP's analogues. The 1,4-DHP scaffold was decorated with different function groups at tree points including the nitrogen atom (NH and N-phenyl), the aryl group attached to C-4 (various substituted aryl residues) and the carbon atoms 2 and 6 (bearing Ph or Me groups)...
August 8, 2017: Parasitology International
Naoto Jimi, Takeya Moritaki, Hiroshi Kajihara
The rare myzostomid genus Asteriomyzostomum Jägersten, 1940 consists of two species, both parasitizing sea stars. The phylogenetic position of this genus among Myzostomida has not been previously shown using molecular data. In this study, three species of Asteriomyzostomum were collected from the Kumano Sea, Japan, and are described as A. jinshou sp. nov., A. monroeae sp. nov., and A. hercules sp. nov. Additional specimens of the genus Asteromyzostomum were also collected from the Kumano Sea and briefly reported as Asteromyzostomum sp...
August 7, 2017: Parasitology International
Megha Sharma, Shashi Sharma Sudhan, Sonali Sharma, Kirti Megha, Ritambhra Nada, Sumeeta Khurana
Osteo-cutaneous form is a rare presentation of acanthamoebiasis. We present the first such case from India in an apparently healthy male who developed cutaneous lesion with bone involvement after traumatic inoculation of Acanthamoeba cysts. The diagnosis was established by routine microbiological techniques and confirmed by 18SrRNA gene sequencing. Aggressive therapy with terbinafine, chlorhexidine, rifampicin and co-trimoxazole was successful in clearing the lesion and preventing encephalitis.
August 7, 2017: Parasitology International
Shokoofeh Shamsi, Marine J Briand, Jean-Lou Justine
Nematodes belonging to the genus Anisakis are important parasites due to their abundance in seafood and health impacts on humans. In the present study Anisakis larvae were found in a number of uncommon hosts including the Grey petrel, Procellaria cinerea, the Little penguin, Eudyptula minor, Blue-lipped sea krait, Laticauda laticaudata and Spinner shark, Carcharhinus brevipinna. Morphological examination showed nematodes in these animals are Anisakis larval type I. Genetic characterisation suggested that the larva from one Grey petrel was Anisakis berlandi, whereas the other larvae from the second Grey petrel and from the little penguin were Anisakis pegreffii...
August 7, 2017: Parasitology International
Mohammad Haseli, Monireh Zare Bazghalee, Harry W Palm
The examination of the two batoid species, Pastinachus sephen (Forsskål) and Himantura gerrardi (Gray), resulted in a morphologic identification of the five eutetrarhynchid species, namely Parachristianella indonesiensis Palm, 2004 reported for the first time from Himantura gerrardi, Pa. monomegacantha Kruse, 1959, Prochristianella clarkeae Beveridge, 1990, Pr. butlerae Beveridge, 1990 and Dollfusiella spinulifera (Beveridge et Jones, 2000). By sequencing the partial 28S rDNA and calculating the genetic distances between the morphologically identified specimens from the Persian Gulf and their allopatric morphological conspecifics as well as using a phylogeny, the specimens of the Persian Gulf were considered as the allopatric conspecifics of Parachristianella indonesiensis, Pa...
July 31, 2017: Parasitology International
Marlies Monnens, Tom Artois, Maarten P M Vanhove
Specimens of Syndesmis aethopharynx Westervelt & Kozloff, 1990 (Umagillidae, Rhabdocoela, Platyhelminthes) were collected from the intestine of several specimens of the sea urchin Paracentrotus lividus (Lamarck ) Hansson, 2001 at the Greek coast. This represents the first report of a species of Syndesmis from Greece. Our study has revealed several previously-unreported morphological details and intraspecific variation, which are added to the species description. The position of S. aethopharynx within Umagillidae is confirmed for the first time through molecular data (based on nuclear 18S rDNA), using both Bayesian and maximum likelihood analyses...
July 25, 2017: Parasitology International
Shimaa Abd El-Salam El-Sayed, Mohamed Abdo Rizk, Mohamad Alaa Terkawi, Naoaki Yokoyama, Ikuo Igarashi
Host cell invasion is the only step where Babesia parasites are extracellular, and their survival is menaced during this step. Therefore, interfering with this critical stage is a target for an anti-Babesia intervention strategy. In this regard, recombinant protein encoding Babesia divergens Erythrocyte Binding Protein (BdEBP) was produced in Escherichia coli in the current study, and its antiserum was prepared in mice for further molecular characterization. Western blotting and indirect fluorescent antibody test (IFAT) revealed the specific reaction of the anti-rBdEBP serum with a corresponding authentic protein of B...
July 22, 2017: Parasitology International
Gerardo A Zavala, Jorge L Rosado, Colleen M Doak, Maria Del Carmen Caamaño, Maiza Campos-Ponce, Dolores Ronquillo, Katja Polman, Olga P García
No abstract text is available yet for this article.
July 22, 2017: Parasitology International
Petr Heneberg, Jiljí Sitko
The Pegosomum Ratz, 1903 are digenean parasites of piscivorous birds. They exhibit few morphological autapomorphies and some of their identification features (number of collar spines) can be altered before or during fixation. Several re-classifications within the genus were suggested, but they have never been supported by molecular analyses. We addressed the synonymization of species within Pegosomum asperum/saginatum complex suggested by Dubinin, Dubinina and Saidov. We analyzed one nuclear (ITS2) and two mitochondrial (CO1, ND1) loci of two central European species of Pegosomum, namely Pegosomum asperum (Wright, 1879) Ratz, 1903 and Pegosomum saginatum (Ratz, 1898) Ratz, 1903...
July 15, 2017: Parasitology International
Anastasia Diakou, José Bernardo Pedroso Couto Soares, Haralambos Alivizatos, Maria Panagiotopoulou, Savas Kazantzidis, Ivan Literák, Oldřich Sychra
Greece represents an important area for wild birds due to its geographical position and habitat diversity. Although the bird species in Greece are well recorded, the information about the chewing lice that infest them is practically non-existent. Thus, the aim of the present study was to record the species of lice infesting wild birds in northern Greece and furthermore, to associate the infestation prevalence with factors such as the age, sex, migration and social behaviour of the host as well as the time of the year...
July 12, 2017: Parasitology International
Renata A Cunha, Edson F G de Carvalho, José E N de Sousa, Julia M Costa-Cruz
Strongyloidosis is a neglected disease that affects millions of people around the world. The cases that particularly deserve attention are those related to hyperinfection, mainly in immunocompromised patients. In this sense, there is a need to improve the serological diagnosis of this helminth. The objective of this study was therefore to produce and characterize excretory/secretory (E/S) antigens of Strongyloides venezuelensis infective larvae (L3) for use as a heterologous antigen in the diagnosis of human strongyloidosis and other parasitic infection groups...
July 10, 2017: Parasitology International
Fernanda A Marinho, Leandro S Sangenito, Simone S C Oliveira, Luciana B De Arruda, Claudia M D'Ávila-Levy, André L S Santos, Marta H Branquinha
Since the discovery of the28 first drugs used in leishmaniasis treatment up to now, the search for compounds with anti-Leishmania activity without toxic effects and able to overcome the emergency of resistant strains remains a major goal to combat this neglected disease. With this in mind, in the present work, we evaluated the effects of the calpain inhibitor MDL28170 on the interaction process of Leishmania amazonensis promastigote forms with murine peritoneal macrophages and on the intracellular amastigotes...
June 27, 2017: Parasitology International
Ping Cui, Hongbin Liu, Sufang Fang, Xiaolong Gu, Peng Wang, Chunling Liu, Geru Tao, Xianyong Liu, Xun Suo
Rabbit coccidiosis is caused by infection with one or usually several Eimeria species, parasitizing in hepatobiliary ducts or intestinal epithelium of rabbits. To date, 11 species of rabbit coccidia have been well documented. Here we report a new species of Eimeria from rabbits. Sporulated oocysts were ellipsoidal to slightly ovoidal, 37.4 (32.6-41.2) μm in length, 23.5 (20.9-25.5) μm in width, with a shape index (length/width) 1.6 (1.43-1.91) and smooth, bilayered, homogeneously thick wall. The micropyle was obvious and with an inner diameter of 6...
June 27, 2017: Parasitology International
Darya Krupenko, Anna Gonchar
Maritae of family Notocotylidae have no ventral sucker, an organ that serves for attachment in many other digeneans. Instead, attachment is accomplished through the ventral concavity which is formed by the whole body. Musculature providing such an attachment was previously described only in part, and specific patterns of body-wall and internal muscle arrangement in notocotylids have never been studied before. In this paper we describe muscle system organization in maritae of three notocotylid species by means of fluorescent actin staining and confocal microscopy...
June 27, 2017: Parasitology International
Kirti Choudhary, Amit Tripathi, Keshava C Pandey, Nirupama Agrawal
Diplostomid digeneans are important parasites whose larval stages infect freshwater snails and fish as first and second intermediate hosts respectively. Diplostomid digeneans as adults are parasitic in many fish-eating birds and mammals. Our understanding of the species diversity of diplostomid digeneans remains incomplete, especially in the Indian sub-continent. Here, we describe three Neascus-type metacercariae (N. hanumanthai, N. gussevi, and N. xenentodoni) from freshwater fish specimens of Channa punctata (Bloch 1793), Trichogaster fasciata (Bloch and Schneider 1801) and Xenentodon cancila (Hamilton, 1822) respectively, collected in India...
June 23, 2017: Parasitology International
Shigehiko Uni, Masako Fukuda, Kou Ogawa, Yvonne Ai-Lian Lim, Takeshi Agatsuma, Naruemon Bunchom, Weerachai Saijuntha, Yasushi Otsuka, Subha Bhassu, Ahmad Syihan Mat Udin, Nur Afiqah Zainuri, Hasmahzaiti Omar, Jun Nakatani, Makoto Matsubayashi, Haruhiko Maruyama, Rosli Ramli, Mohd Sofian Azirun, Hiroyuki Takaoka
An 11-year-old boy living in Otsu City, Shiga Prefecture, Kansai Region, Western Honshu, Japan had zoonotic onchocercosis. The patient developed a painful swelling on the little finger of his left hand. The worm detected in the excised mass had external transverse ridges but did not have inner striae in the cuticle. On the basis of the parasite's histopathological characteristics, the causative agent was identified as a female Onchocerca dewittei japonica (Spirurida: Onchocercidae). The species of the filarial parasite was confirmed by sequencing the cox1 gene of the parasite...
June 23, 2017: Parasitology International
Hiroshi Yamasaki, Shinji Izumiyama, Tomoyoshi Nozaki
We first constructed and characterized the complete mitochondrial genome (mitogenome) sequence of Diphyllobothrium stemmacephalum, the type species of genus Diphyllobothrium, using next generation sequencing (NGS). The mitogenome of D. stemmacephalum was 13,716bp, including 12 protein-coding genes, 22 tRNA genes, 2 rRNA genes and 2 longer intergenic non-coding regions, and has features common to mitogenomes of other cestodes. Although it has been accepted that tRNA for serine (trnS2(UCN)) in Platyhelminthes lacks a D arm, the trnS2(UCN) of D...
June 22, 2017: Parasitology International
Yuriy Kvach, Pavel Jurajda, Anna Bryjová, Teodora Trichkova, Filip Ribeiro, Iva Přikrylová, Markéta Ondračková
Metacercariae of a North American digenean Posthodiplostomum cf. minimum centrarchi (Strigeiformes: Diplostomidae), have been reported from seven localities in Europe, with cysts recorded in the mesentery and internal organs of two invasive non-indigenous fishes (Lepomis gibbosus and Micropterus salmoides) from sites in Bulgaria, the Czech Republic and Portugal. Analysis of rDNA locus ITS1-ITS2-28S confirmed a closer relationship to the American Posthodiplostomum species than the common European species P. cuticola or P...
June 20, 2017: Parasitology International
Liang Li, Hui-Xia Chen, Omar M Amin, Yue Yang
Species of Pomphorhynchus Monticelli, 1905 commonly parasitize the digestive tract of freshwater fishes, and rarely occur in marine fishes and amphibians. In the present study, Pomphorhynchus zhoushanensis sp. nov., collected from the barred knifejaw Oplegnathus fasciatus (Temminck & Schlegel) (Perciformes: Oplegnathidae) in the East China Sea, was described using integrated approaches, including light and scanning electron microscopy, and the sequencing and analysing of ribosomal [small ribosomal DNA (18S) and internal transcribed spacer (ITS)] and mitochondrial [cytochrome c oxidase subunit 1 (cox1)] target regions...
June 16, 2017: Parasitology International
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