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Parasitology International

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https://www.readbyqxmd.com/read/28089813/parasciadicleithrum-octofasciatum-n-gen-n-sp-monogenoidea-dactylogyridae-parasite-of-rocio-octofasciata-regan-cichlidae-perciformes-from-mexico-characterised-by-morphological-and-molecular-evidence
#1
Carlos A Mendoza-Palmero, Isabel Blasco-Costa, David Hernández-Mena, Gerardo Pérez-Ponce de León
Based on an integrative taxonomic approach, combining morphological characters and partial sequences of the 28S rRNA gene, a new genus and species, Parasciadicleithrum octofasciatum, is proposed to accommodate dactylogyrids infecting the gills of Rocio octofasciata (Cichlidae) from a tributary of the Lacantún River basin, Chiapas State, southern Mexico. Morphologically, the new genus resembles members of Sciadicleithrum (Dactylogyridae) in the presence of membranes on the anterior margins of both ventral and dorsal haptoral bars...
January 13, 2017: Parasitology International
https://www.readbyqxmd.com/read/28087441/blastocystis-and-irritable-bowel-syndrome-frequency-and-subtypes-from-iranian-patients
#2
Shahram Khademvatan, Rahim Masjedizadeh, Fakher Rahim, Hamidreza Mahbodfar, Roya Salehi, Ehsan Yousefi-Razin, Masoud Foroutan
There are inconsistent findings about the role of Blastocystis infection in irritable bowel syndrome (IBS). The present study was aimed to determine the frequency of Blastocystis and their subtypes (ST) in patients with IBS. A total of 122 patients with IBS and 122 healthy individuals referred to the medical laboratory centers in Ahvaz (southwest of Iran) participated in the study. The frequency of Blastocystis was determined. Blastocystis genomic DNA was extracted from positive feces, and PCR was performed using seven primer pairs targeting the SSU rDNA gene...
January 10, 2017: Parasitology International
https://www.readbyqxmd.com/read/28087440/an-overlooked-horticultural-crop-smyrnium-olusatrum-as-a-potential-source-of-compounds-effective-against-african-trypanosomiasis
#3
Riccardo Petrelli, Farahnaz Ranjbarian, Stefano Dall'Acqua, Fabrizio Papa, Romilde Iannarelli, Stephane L Ngahang Kamte, Sauro Vittori, Giovanni Benelli, Filippo Maggi, Anders Hofer, Loredana Cappellacci
Among natural products, sesquiterpenes have showed promising inhibitory effects against bloodstream forms of Trypanosoma brucei, the protozoan parasite causing the human African trypanosomiasis (HAT). Smyrnium olusatrum (Apiaceae), also known as Alexanders or wild celery, is a neglected horticultural crop characterized by oxygenated sesquiterpenes containing a furan ring. In the present work we explored the potential of its essential oils obtained from different organs and the main oxygenated sesquiterpenes, namely isofuranodiene, germacrone and β-acetoxyfuranoeudesm-4(15)-ene, as inhibitors of Trypanosoma brucei...
January 10, 2017: Parasitology International
https://www.readbyqxmd.com/read/28089556/larval-stages-of-neoplagioporus-elongatus-goto-and-ozaki-1930-opecoelidae-plagioporinae-with-notes-on-potential-second-intermediate-hosts
#4
Ayaka Yano, Misako Urabe
The morphology of sporocysts and cercariae of Neoplagioporus elongatus (Goto and Ozaki, 1930) is described for the first time. A cotylomicrocercous cercaria obtained from the sorbeoconch snail Semisulcospira nakasekoae was confirmed to be the cercaria of N. elongatus, based on the degree of sequence identity of the COI gene to that of adult worms. Freshwater annelids (oligochaetes and leeches) and some aquatic insects (odonates) were demonstrated experimentally to be potential second intermediate hosts.
January 9, 2017: Parasitology International
https://www.readbyqxmd.com/read/28069407/a-historical-review-of-small-liver-fluke-infections-in-humans
#5
EDITORIAL
Banchob Sripa, Smarn Tesana, Nataliya Yurlova, Yukifumi Nawa
No abstract text is available yet for this article.
January 6, 2017: Parasitology International
https://www.readbyqxmd.com/read/28069406/message-from-dean-of-faculty-of-medicine-khon-kaen-university
#6
EDITORIAL
Charnchai Panthongviriyakul
No abstract text is available yet for this article.
January 6, 2017: Parasitology International
https://www.readbyqxmd.com/read/28069405/message-from-permanent-secretary-of-public-health
#7
EDITORIAL
Sopon Mekthon
No abstract text is available yet for this article.
January 6, 2017: Parasitology International
https://www.readbyqxmd.com/read/28033565/isolation-molecular-characterization-and-in-vitro-schizogonic-development-of-sarcocystis-sp-ex-accipiter-cooperii-from-a-naturally-infected-cooper-s-hawk-accipiter-cooperii
#8
David S Lindsay, Shiv K Verma, David Scott, Jitender P Dubey, Alexa R von Dohlen
Raptors serve as the definitive host for several Sarcocystis species. The complete life cycles of only a few of these Sarcocystis species that use birds of prey as definitive hosts have been described. In the present study, Sarcocystis species sporocysts were obtained from the intestine of a Cooper's hawk (Accipiter cooperii) and were used to infect cell cultures of African green monkey kidney cells to isolate a continuous culture and describe asexual stages of the parasite. Two clones of the parasite were obtained by limiting dilution...
December 26, 2016: Parasitology International
https://www.readbyqxmd.com/read/28027969/morphological-and-molecular-characterization-of-the-metacercaria-of-paragonimus-caliensis-as-a-separate-species-from-p-mexicanus-in-costa-rica
#9
Roderico Hernández-Chea, Ana Eugenia Jiménez-Rocha, Ruth Castro, David Blair, Gaby Dolz
The trematode Paragonimus mexicanus is the etiological agent of paragonimiasis, a food-borne zoonotic disease in Latin America. This species, as well as Paragonimus caliensis, have been reported from Costa Rica, but it is not known if the two are synonymous. Two types of Paragonimus metacercariae from freshwater pseudothelphusid crabs from several localities in Costa Rica were recognized by light microscopy. Morphologically, these corresponded to descriptions of P. mexicanus and P. caliensis. Metacercariae of the former species lacked a membrane or cyst and their bodies were yellow in color...
December 24, 2016: Parasitology International
https://www.readbyqxmd.com/read/28027968/establishment-of-the-complete-life-cycle-of-spirometra-cestoda-diphyllobothriidae-in-the-laboratory-using-a-newly-isolated-triploid-clone
#10
Tetsuya Okino, Hiroshi Ushirogawa, Kumiko Matoba, Shin-Ichiro Nishimatsu, Mineki Saito
Methods to maintain the life cycle of pathogenic organisms become powerful tools for studying molecular and cellular bases of infectious diseases. Spirometra erinaceieuropaei is a parasitic tapeworm that causes sparganosis in humans. Because S. erinaceieuropaei has a complex life cycle with different stages and host species requirements, there have been no reports to establish the complete life cycle in the laboratory. In this study, using Cyclops as the first intermediate host, mouse as the experimental second intermediate host, and dog as the final host, we succeeded in maintaining S...
December 24, 2016: Parasitology International
https://www.readbyqxmd.com/read/28027967/co-phylogeographic-study-of-the-flatworm-gyrodactylus-gondae-and-its-goby-host-pomatoschistus-minutus
#11
Tine Huyse, Merel Oeyen, Maarten H D Larmuseau, Filip A M Volckaert
We performed a comparative phylogeographic study on the monogenean flatworm Gyrodactylus gondae Huyse, Malmberg & Volckaert 2005 (Gyrodactylidae) and its sand goby host Pomatoschistus minutus (Pallas, 1770) (Gobiidae). G. gondae is a host-specific parasite with a direct life cycle and a very short generation time. These properties are expected to increase the chance to track the genealogical history of the host with genetic data of the parasite ('magnifying glass principle'). To investigate this hypothesis we screened nine sand goby populations (n=326) along the Atlantic coasts of Europe for Gyrodactylus specimens...
December 24, 2016: Parasitology International
https://www.readbyqxmd.com/read/28025118/detection-of-echinococcus-granulosus-and-echinococcus-ortleppi-in-bhutan
#12
Nirmal Kumar Thapa, Maria Teresa Armua-Fernandez, Dukpa Kinzang, Ratna B Gurung, Phuntsho Wangdi, Peter Deplazes
In this pilot study, fecal samples were collected from community dogs around slaughterhouses and from the city of Thimphu (n=138) as well as from carnivores in the forest area around a farm in Bhutan (n=28). Samples were analyzed microscopically for the presence of taeniid eggs by the floatation and sieving method. Further molecular analyses of 20 samples of community dogs positive for taeniid eggs confirmed 10 Echinococcus granulosus sensu lato and one Taenia hydatigena case. From 14 environmental fecal samples from the forest area positive for taeniid eggs, one contained E...
December 23, 2016: Parasitology International
https://www.readbyqxmd.com/read/28012796/antigenic-fractions-from-taenia-crassiceps-metacestodes-obtained-by-hydrophobicity-for-the-immunodiagnosis-of-active-and-inactive-forms-of-neurocysticercosis-in-human-cerebrospinal-fluid-samples
#13
Gabriela B da Silva, Daniela S Nunes, José Eduardo N de Sousa, Maria do R F Gonçalves-Pires, Marcelo A Levenhagen, Julia M Costa-Cruz
This study aimed to evaluate the total extract of Taenia crassiceps metacestodes (TC) and its antigenic fractions obtained by Triton X-114 fractionation techniques, such as detergent (DC) and aqueous (AC), in the immunodiagnosis of human neurocysticercosis (NCC). Cerebrospinal fluid samples were divided into two groups: Group 1 (n=40), which was further divided into active (n=20) and inactive (n=20) NCC, and Group 2 (control group), which comprised 39 CSF samples from patients who had another neurological disorder, were suffering from other infectious diseases of the brain or had other parasitic infections...
December 21, 2016: Parasitology International
https://www.readbyqxmd.com/read/27998804/isospora-lunaris-n-sp-apicomplexa-eimeriidae-from-the-domestic-java-sparrow-in-japan
#14
Toshihiro Tokiwa, Atsushi Kojima, Shun Sasaki, Rie Kubota, Kazunori Ike
Five individuals of the domestic Java sparrows, Lonchura oryzivora (Aves: Estrildidae), were examined for coccidian parasites. Sporulated oocysts had two sporocysts containing four sporozoites each. Sporulated oocysts (n=30) were spherical, with a two splinter-like polar granules. Oocyst size was 22.1×20.7 (20.0-25.0×20.0-22.5)μm. They had a thick wall that consisted of a pale yellow outer layer and a dark yellow inner layer, and lacked micropyle and residuum. Sporocysts (n=60) were elongated ovoid 14.1×9...
December 18, 2016: Parasitology International
https://www.readbyqxmd.com/read/27974232/high-intraspecific-variability-of-echinococcus-granulosus-sensu-stricto-in-chile
#15
Cristian A Alvarez Rojas, Dennis Ebi, Rodolfo Paredes, Gerardo Acosta-Jamett, Nicole Urriola, Juan Carlos Roa, Carlos Manterola, Sandra Cortes, Thomas Romig, Jean-Pierre Scheerlinck, Marshall W Lightowlers
Echinococcus granulosus sensu stricto is the major cause of cystic echinococcosis in most human and animal cases in the world and the most widespread species within the E. granulosus sensu lato complex. E. granulosus s.s. remains endemic in South America together with other species of the Echinococcus genus, especially in some areas in Argentina, Brazil, Chile and Peru. Except for a single human case caused by E. canadensis (G6) described in the literature, only E. granulosus s.s. has been found in the Chilean territory...
December 11, 2016: Parasitology International
https://www.readbyqxmd.com/read/27965165/suspected-cases-of-cholangiocarcinoma-seen-in-reference-hospitals-in-lao-people-s-democratic-republic
#16
Phonepasong Ayé Soukhathammavong, Youthanavanh Vonghachack, Christoph Hatz, Kongsap Akkhavong, Peter Odermatt
Cholangiocarcinoma (CCA) poses a significant public health problem in Southeast Asia, with chronic Opisthorchis viverrini infection being the main risk factor. Epidemiological data on CCA is not available for Lao People Democratic Republic (Lao PDR), though there is a high prevalence of O. viverrini infection in the country. A hospital record-based retrospective study was carried out in six referral hospitals (four in the capital city, one in Savannakhet, one in Pakse) to assess the number of suspected CCA cases admitted between January 2006 and December 2010...
December 11, 2016: Parasitology International
https://www.readbyqxmd.com/read/27956093/late-diagnosis-of-congenital-toxoplasmosis-based-on-serological-follow-up-a-case-report
#17
Céline Dard, Cathy Chemla, Hélène Fricker-Hidalgo, Marie-Pierre Brenier-Pinchart, Marie Baret, Alexandre Mzabi, Isabelle Villena, Hervé Pelloux
Toxoplasma gondii is a protozoan parasite infecting up to one third of the world's population. T. gondii infection is usually benign in immunocompetent patients but can be life-threatening when congenitally transmitted. Congenital toxoplasmosis presentation ranges from severe central nervous system and ocular features, to a well appearing newborn with onset of complications late in childhood. The diagnosis of subclinical form remains important since early treatment reduces later complications such as chorioretinitis...
December 9, 2016: Parasitology International
https://www.readbyqxmd.com/read/27956092/ultrasonographic-features-of-hepatobiliary-in-opisthorchiasis
#18
Eimorn Mairiang
Infection with the liver fluke, Opisthorchis viverrini (OV), is an important public health problem in northeast Thailand where people have a habit of eating raw or inadequately cooked fish. Opisthorchiasis Is associated with a number of asymptomatic hepatobiliary abnormalities and cholangiocarcinoma (CCA) that can be observed conveniently by ultrasonography. The ultrasonographicclassification of hepatobiliary pathology opisthorchiasis will be presented.
December 9, 2016: Parasitology International
https://www.readbyqxmd.com/read/27939972/opisthorchiasis-in-western-siberia-epidemiology-and-distribution-in-human-fish-snail-and-animal-populations
#19
Natalia I Yurlova, Elena N Yadrenkina, Natalia M Rastyazhenko, Elena А Serbina, Viktor V Glupov
Opisthorchiasis is a widespread helminth infection in Russia. The largest opisthorchiasis endemic focus in the world is the Ob river watershed in Western Siberia. The main causative agent of this condition is the liver fluke, Opisthorchis felineus. In addition, another liver fluke species in the Opisthorchiidae family, Metorchis bilis, causes a symptomatically similar disease, metorchiasis. Despite a long research history going back to 1927, opisthorchiasis remains a serious problem in Russia, and numerous questions related to the epidemiology of these liver fluke infections and their patterns of distribution in Western Siberia, the causes of high prevalence in different populations, and the prognosis of the epidemiological situation remain to be answered...
December 8, 2016: Parasitology International
https://www.readbyqxmd.com/read/27940065/identification-of-trypanosoma-cruzi-discrete-typing-units-dtus-in-latin-american-migrants-in-barcelona-spain
#20
Alba Abras, Montserrat Gállego, Carmen Muñoz, Natalia A Juiz, Juan Carlos Ramírez, Carolina I Cura, Silvia Tebar, Anna Fernández-Arévalo, María-Jesús Pinazo, Leonardo de la Torre, Elizabeth Posada, Ferran Navarro, Paula Espinal, Cristina Ballart, Montserrat Portús, Joaquim Gascón, Alejandro G Schijman
Trypanosoma cruzi, the causative agent of Chagas disease, is divided into six Discrete Typing Units (DTUs): TcI-TcVI. We aimed to identify T. cruzi DTUs in Latin-American migrants in the Barcelona area (Spain) and to assess different molecular typing approaches for the characterization of T. cruzi genotypes. Seventy-five peripheral blood samples were analyzed by two real-time PCR methods (qPCR) based on satellite DNA (SatDNA) and kinetoplastid DNA (kDNA). The 20 samples testing positive in both methods, all belonging to Bolivian individuals, were submitted to DTU characterization using two PCR-based flowcharts: multiplex qPCR using TaqMan probes (MTq-PCR), and conventional PCR...
December 7, 2016: Parasitology International
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