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Acta Parasitologica

Rika Umemiya-Shirafuji, Takeshi Hatta, Kazuhiro Okubo, Moeko Sato, Hiroki Maeda, Aiko Kume, Naoaki Yokoyama, Ikuo Igarashi, Naotoshi Tsuji, Kozo Fujisaki, Noboru Inoue, Hiroshi Suzuki
No abstract text is available yet for this article.
June 26, 2018: Acta Parasitologica
Aline Cristina Zago, Lidiane Franceschini, Maria Isabel Müller, Reinaldo José da Silva
The present study describes Cacatuocotyle papilionis n. sp. (Monogenea, Dactylogyridae) from the skin of the characid fishes Astyanax lacustris (Lütken, 1875) (=Astyanax altiparanae Garutti & Britski, 2000) and Astyanax fasciatus (Cuvier, 1819) (Characiformes, Characidae) from the Southeast of Brazil, supported by morphological and molecular data. The new species differs from all congeners, mainly due to the morphology of the ventral bar (resembling a butterfly), accessory piece, and the number of rings of the male copulatory organ (MCO), comprising a coiled tube with 4...
June 26, 2018: Acta Parasitologica
Raimundo Rosemiro Jesus Baia, Alexandro Cezar Florentino, Luís Maurício Abdon Silva, Marcos Tavares-Dias
This paper characterizes the pattern of ectoparasite and endoparasite communities in an assemblage of 35 sympatric fish from different trophic levels in a tributary from the Amazon River system, northern Brazil. In detritivorous, carnivorous, omnivorous and piscivorous hosts, the species richness consisted of 82 ectoparasites and endoparasites, but protozoan ectoparasites such as Ichthyophthirius multifiliis, Piscinoodinium pillulare and Tripartiella sp. were dominant species predominated, such that they were present in 80% of the hosts...
June 26, 2018: Acta Parasitologica
Zhaofeng Hou, Yonghua Zhou, Dandan Liu, Shijie Su, Zhenxing Zhao, Jinjun Xu, Jianping Tao
Toxoplasma gondii is an obligate intracellular parasite with worldwide distribution. Virulence of T. gondii is a multigenic trait. Genetic and virulence data for T. gondii isolates from humans and animals in China have been reported. However, almost all biological materials used for genotyping of T. gondii from humans and pigs were DNA samples prepared from tissues, and T. gondii strains used for virulence analysis were isolated mainly from cats. In this study, one isolate from a dead human fetus was identified as type I (ToxoDB #10) while the two isolates from dead pigs were type Chinese I (ToxoDB #9) with PCR-restriction fragment length polymorphism using 10 markers (SAG1, SAG2, SAG3, BTUB, GRA6, c22-8, c29-2, L358, PK1 and Apico)...
June 26, 2018: Acta Parasitologica
Fabiola Del Rocío Villalobos-Gómez, Mario García-Lorenzana, Galileo Escobedo, Patricia Talamás-Rohana, Rogelio Salinas-Gutiérrez, Verónica-Ivonne Hernández-Ramírez, Esperanza Sánchez-Alemán, María Del Rosario Campos-Esparza, Martín Humberto Muñoz-Ortega, Javier Ventura-Juárez
The neuroimmunoregulation of inflammation has been well characterized. Entamoeba histolytica provokes an inflammatory response in the host in which macrophages and neutrophils are the first line of defense. The aim of this study was to analyze the effect of the 220 kDa lectin of Entamoeba histolytica on stimulation of human macrophages and neutrophils, especially the secretion of cytokines and the relation of these to neurotransmitters. Human cells were interacted with L220, epinephrine, nicotine, esmolol and vecuronium bromide...
June 26, 2018: Acta Parasitologica
Xuliang Zhang, Lixin Xu, Xiaokai Song, Xiangrui Li, Ruofeng Yan
Trichinella spiralis, the main pathogen of trichinosis, infects a wide range of mammalian hosts and is one of the most widespread parasites worldwide. For parasites, glycolysis is the most important way to generate energy. Previous studies showed that some enzymes involved in the glycolytic pathway play roles in regulation the host immunity. In this paper, enolase from T. spiralis was cloned and the protective potentials were studied. One hundred and sixty ICR mice were divided into four groups and vaccinated with recombinant enolase (pET-ENO), eukaryotic recombinant plasmid encoding enolase (pVAX1-ENO) and negative controls (pVAXl and PBS), respectively...
June 26, 2018: Acta Parasitologica
Alynne da Silva Barbosa, Helene Santos Barbosa, Sandra Maria de Oliveira Souza, Laís Verdan Dib, Claudia Maria Antunes Uchôa, Otilio Machado Pereira Bastos, Maria Regina Reis Amendoeira
Balantioides coli is a ciliated protozoon that inhabits the intestine of pigs, non-human primates and humans. Light microscopy studies have described over 50 species of the genus Balantioides but their validity is in doubt. Due to the limited information about this genus, this study is aimed to identify morphological characteristics of Balantioides coli isolated using fluorescence microscopy and both scanning (SEM) and transmission electron microscopy (TEM). Trophozoites isolated from the feces of pig and macaque were washed and subjected to centrifugation...
June 26, 2018: Acta Parasitologica
V M Vaidya, R J Zende, A M Paturkar, M L Gatne, D G Dighe, R N Waghmare, S L Moon, S S Bhave, K G Bengale, N V Nikale
Echinococcosis/hydatidosis which is a neglected parasitic zoonosis in the developing country like India. The study was conducted during April, 2010 to March, 2017 to determine the prevalence among slaughtered food animals, dogs and human. The samples were collected from the various slaughterhouses situated in different regions of Maharashtra state. A total of 9464 cattle (male), 3661 buffalo, 47189 sheep, 33350 goats and 13579 pigs were scientifically examined during PM inspection at different slaughterhouses...
June 26, 2018: Acta Parasitologica
Kareem Morsy, Fathy Abdel-Ghaffar, Saad Bin Dajem, Rewaida Abdel-Gaber, Fatma El Gazar
Fresh muscle samples from water buffalo (Bubalus bubalis) aged 2-15, from Giza Province, Egypt; were examined for Sarcocystis infection. Macroscopic ovoid sarcocysts embedded in the muscle tissues of the examined buffaloes were detected; they measured 152-230 (210 ± 7) μm in length and 37-119 (95 ± 3) μm in width. The esophagus was the most infected organ followed by the diaphragm, and tongue, while the heart muscles were the least infected. The cyst cavity was compartmentalized by septa derived from the ground substance located under the primary cyst wall...
June 26, 2018: Acta Parasitologica
Alireza Zahedi, Gary K C Lee, Telleasha L Greay, Audra L Walsh, David J C Blignaut, Una M Ryan
Cryptosporidium is an important enteric parasite that can contribute large numbers of infectious oocysts to drinking water catchments. As a result of its resistance to disinfectants including chlorine, it has been responsible for numerous waterborne outbreaks of gastroenteritis. Wildlife and livestock play an important role in the transmission of Cryptosporidium in the environment. Studies conducted outside Australia have indicated that camels may also play a role in the transmission of zoonotic species of Cryptosporidium...
June 26, 2018: Acta Parasitologica
Kamel Adwan, Alaa Jayousi, Sameh Abuseir, Ibrahim Abbasi, Ghaleb Adwan, Naser Jarrar
Cysticercus tenuicollis is the metacestode of canine tapeworm Taenia hydatigena, which has been reported in domestic and wild ruminants and is causing veterinary and economic losses in the meat industry. This study was conducted to determine the sequence variation in the mitochondrial cytochrome c oxidase subunit 1 (coxl) gene in 20 isolates of T. hydatigena metacestodes (cysticercus tenuicollis) collected from northern West Bank in Palestine. Nine haplotypes were detected, with one prevailing (55%). The total haplotype diversity (0...
June 26, 2018: Acta Parasitologica
Javier Rodríguez-Martín, Pedro Rocha-Cabrera, María Reyes-Batlle, Atteneri López-Arencibia, Ines Sifaoui, Aitor Rizo-Liendo, Carlos J Bethencourt-Estrella, José E Piñero, Jacob Lorenzo-Morales
Pathogenic strains of Acanthamoeba are causative agents of a sight-threatening infection of the cornea known as Acanthamoeba keratitis (AK) which mainly affects contact lens wearers and it is commonly related to poor hygiene of contact lenses and their cases. Moreover, treatment of AK is complex due to the existence of a highly resistant cyst stage and if not diagnosed early has poor prognosis, leading to blindness and/or keratoplasty. Even though AK is increasing worldwide as well as awareness among patients and clinicians, it is still a poorly studied pathogen...
June 26, 2018: Acta Parasitologica
Gui Hua Zhao, Ye Liu, Yun Tang Cheng, Qing Song Zhao, Xiao Qiu, Chao Xu, Ting Xiao, Song Zhu, Gong Zhen Liu, Kun Yin
Felids are the only definitive hosts of Toxoplasma gondii. To lay a foundation for screening the T. gondii-felids interaction factors, we have developed a reproducible primary culture method for cat intestinal epithelial cells (IECs). The primary IECs were isolated from a new born cat's small intestine jejunum region without food ingress, and respectively in vitro cultured by tissue cultivation and combined digestion method with collagenase XI and dispase I, then purified by trypsinization. After identification, the ds cDNA of cat IECs was synthesized for constructing pGADT7 homogenization three-frame plasmid, and transformed into the yeast Y187 for generating the cDNA library...
June 26, 2018: Acta Parasitologica
Jian Zhou, Wanchun Wang, Pengxia Song, Lin Wang, Yali Han, Jingjing Guo, Zhen Hao, Xi Zhu, Qiong Zhou, Xiadong Du, Gang Lu, Shenyi He, Yingquan Luo
Toxoplasma gondii infects almost all the warm-blooded animals. ROP20 protein is expressed in the rhoptry of Toxoplasma gondii. In this study, the secondary structure of ROP20 was analyzed using SMART software. We constructed and analyzed the 3D model of ROP20 protein using SWISS-MODEL online procedure and Visual Molecular Dynamics (VMD) software. The structure analysis fully indicated that ROP20 protein is an important member of the ROP family. Furthermore, We used DNASTAR software and Epitope Database online service to analyze liner-B cell epitopes and T-cell epitopes of ROP20 protein...
June 26, 2018: Acta Parasitologica
Ruy Brayner de Oliveira Filho, Karla Campos Malta, Jonas de Melo Borges, Pollyanne Raysa Fernandes de Oliveira, Givanildo Jacinto Dos Santos Filho, Glaucia Grazielle Nascimento, Rinaldo Aparecido Mota, José Wilton Pinheiro Júnior
The objective of this study was to determine the prevalence of Tritrichomonas foetus infection and to evaluate risk factors associated with this infection among cattle in the state of Paraíba in northeastern Brazil. Samples of cervicovaginal mucus from 290 females and smegma from 59 males [beef, 31; mixed aptitude (beef and dairy), 10; and dairy, 18] from 31 farms were collected. Modified Diamond's medium and polymerase chain reaction (PCR) were used for the laboratory diagnosis of T. foetus infection. Univariate analysis and logistic regression were performed to test for potential risk factors in addition to prevalence mapping...
June 26, 2018: Acta Parasitologica
Guanbo Wang, Longzheng Yu, Artemis Efstratiou, Paul Franck Adjou Moumouni, Mingming Liu, Huanping Guo, Yang Gao, Shinuo Cao, Mo Zhou, Jixu Li, Aaron Edmond Ringo, Xuenan Xuan
In the present study, we have investigated the protective effect of a heterologous prime-boost strategy with priming plasmid DNA followed by recombinant adenovirus, both expressing BmAMA1, against Babesia microti infection. Four groups consisting of 3 hamsters per group were immunized with pBmAMA1/Ad5BmAMA1, pNull/Ad5BmAMA1, pBmAMA1/Ad5Null and pNull/Ad5Null, followed by challenge infection with B. microti. Our results showed that hamsters immunized with plasmid and adenovirus expressing BmAMA1 developed a robust IgG and IgG2a antibody response against BmAMA1, suggesting the DNA vaccine or viral vector vaccine tend to induce a Th1-biased response...
June 26, 2018: Acta Parasitologica
Georgii A Kremnev, Sergei V Shchenkov
Morphology of the daughter sporocysts of Cercaria etgesii Shchenkov, 2017 (Pleurogenidae) has been described according to conventional histological techniques and subsequent 3D reconstruction with Bitplanelmaris® software. Novel data were obtained concerning the spatial organization of the brood cavity of Pleurogenidae daughter sporocysts. It was shown that the laminated structures of the endocyst are lining the brood cavity and carry out its compartmentalisation by formation of the chambers around developing and disintegrating embryos of cercariae...
June 26, 2018: Acta Parasitologica
Jiawei Wang, Patrick Kelly, Jilei Zhang, Zhengsheng Shi, Chunlian Song, Xiaofeng Zheng, Yi Zhang, Yongqing Hao, Haiju Dong, Heba S El-Mahallawy, Wenbin Xiong, Heng Wang, Jianji Li, Xinjun Zhang, Chengming Wang
Despite the fact vector-borne diseases (VBDs) have been increasingly reported in dogs worldwide, there are only limited reports on VBDs in dogs in China with most being based on molecular detection of active infections. To provide further data on the exposure of dogs in China to VBD agents, we used commercial immunochromatographic assays to test plasma from 637 apparently healthy indoor and breeding colony dogs from 21 veterinary clinics in 10 provinces in China and a commercial dog breeding facility for circulating antigen of Dirofilaria immitis, and for circulating antibodies against Ehrlichia spp...
June 26, 2018: Acta Parasitologica
Kun Li, Muhammad Shahzad, Hui Zhang, Khalid Mehmood, Xiong Jiang, Houqiang Luo, Lihong Zhang, Xiaoqian Dong, Jiakui Li
The present study was designed to determine and analyze the mt genomes of Metastrongylus salmi (M. salmi), and reveal the phylogenetic relationships of this parasite using mt DNA sequences. Results showed that the complete mt genome of M. salmi was 13722 bp containing 12 protein-coding genes (cox1-3, nad1-6, nad4L, atp6 and cytb), 22 transfer RNA genes, and 2 ribosomal RNA genes (rrnL and rrnS). The overall A+T content was 73.54% and the nucleotide composition was A (23.52%), C (6.14%), G (19.60%), T (50.02%), and N (UCAG) (0...
June 26, 2018: Acta Parasitologica
Samuel Gómez, Hugo Aguirre-Villaseñor, Francisco Neptali Morales-Serna
A total of 228 sampling stations were visited for benthic fauna during a series of oceanographic cruises in the Gulf of California, west coast of the Baja California Peninsula, and Eastern Central Pacific from year 1991 to 2014. Among others, three fish species of the genus Dibranchus were caught in 28 stations. Of these, D. spongiosa was the most common and abundant. Close inspection of this fish revealed the presence of a new species of parasitic copepod, Chondracanthus dibranchi sp. nov., found in the gill cavity of seven specimens of D...
June 26, 2018: Acta Parasitologica
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