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https://www.readbyqxmd.com/read/28429172/a-new-species-of-haematoloechus-looss-1899-digenea-plagiorchioidea-haematoloechidae-a-parasite-of-rana-psilonota-webb-and-r-zweifeli-hillis-frost-webb-anura-ranidae-in-mexico
#1
Virginia León-Règagnon, Ángeles R Romero-Mayén
During an inventory of the helminths of amphibians in Mexico, specimens of an undescribed species of Haematoloechus Looss, 1899 (Digenea: Haematoloechidae) were collected from the lungs of frogs of the "tarahumarae" group in western México. Haematoloechus longicollum n. sp. differs from other known species of Haematoloechus by the combination of the following characters: body elongate and slender in the preovarian region and broad and blunt in the postovarian region, ovary separated from the ventral sucker more than twice the ovary length, oral sucker to pharynx length ratio 1:0...
April 20, 2017: Systematic Parasitology
https://www.readbyqxmd.com/read/28428784/the-roles-of-mast-cells-in-parasitic-protozoan-infections
#2
REVIEW
Fangli Lu, Shiguang Huang
Protozoan parasites such as Plasmodium spp., Leishmania spp., Trypanosoma spp., and Toxoplasma gondii are major causes of parasitic diseases in both humans and animals. The immune system plays a critical role against protozoa, but their immune mechanism remains poorly understood. This highlights the need to investigate the function of immune cells involved in the process of parasite infections and the responses of host immune system to parasite infections. Mast cells (MCs) are known to be central players in allergy and anaphylaxis, and it has been demonstrated that MCs have crucial roles in host defense against a number of different pathogens, including parasites...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28426784/building-on-the-success-of-soil-transmitted-helminth-control-the-future-of-deworming
#3
Peter Mark Jourdan, Antonio Montresor, Judd L Walson
No abstract text is available yet for this article.
April 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28426425/the-role-of-domestic-dogs-in-the-transmission-of-zoonotic-helminthes-in-a-rural-area-of-mekong-river-basin
#4
Marcello Otake Sato, Megumi Sato, Tippayarat Yoonuan, Tiengkham Pongvongsa, Surapol Sanguankiat, Sengchanh Kounnavong, Wanna Maipanich, Yuichi Chigusa, Kazuhiko Moji, Jitra Waikagul
Dogs have been bred since ancient times for companionship, hunting, protection, shepherding and other human activities. Some canine helminth parasites can cause significant clinical diseases in humans as Opisthorchis viverrini causing cholangiocarcinoma in Southeast Asian Countries. In this study, socio-cultural questionnaire, canine parasitological analysis, necropsy, parasite molecular confirmation and dog roaming data were evaluated in Savannakhet, Lao-PDR, a typical Mekong Basin area. Dog owners comprised 48...
June 1, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/28426422/morphological-re-description-of-electrotaenia-malapteruri-cestoda-proteocephalidae-and-dujardinnascaris-malapteruri-nematoda-heterocheilidae-infecting-the-electric-catfish-malapterurus-electricus-and-heavy-metal-accumulation-in-host-and-parasites-in-relation
#5
Rewaida Abdel-Gaber, Fathy Abdel-Ghaffar, Mohamed Abdallah Shazly, Kareem Morsy, Saleh Al Quraishy, Sanna Mohamed, Heinz Mehlhorn
Parasites are one of the most serious limiting factors in aquaculture. The Electric catfish Malapterurus electricus was subjected to study the prevalence and mean intensity of parasitic infections throughout the whole year of 2015. Heavy metals accumulation in host fish and parasites were determined in relation to water quality and sediments of two different sites of Lake Manzala (Manzala and Bahr El-Baqar), Egypt. A total of 100 specimens of Electric catfish were collected and examined for the presence of helminth parasites...
June 1, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/28426416/how-does-host-ecology-influence-sampling-effort-in-parasite-diversity-estimates-a-case-study-using-neotropical-freshwater-fishes
#6
Fábio Hideki Yamada, Ricardo Massato Takemoto
Accurately estimating biodiversity is fundamental to ecological understanding and prediction. Helminthes are often neglected in biodiversity estimates and when included are often underestimated. Here we examine how sampling effort affects estimates of parasite diversity in an assemblage of freshwater fish from a floodplain in Brazil. We also examine how ecological and behavioral factors influence the sampling effort necessary to accurately estimate the parasite diversity associated with a fish species. We use our dataset to suggest that host species with wide geographic distribution (i...
June 1, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/28426410/nematode-parasites-of-the-chilean-flamingo-phoenicopterus-chilensis-phoenicopteridae-from-central-argentina-with-a-description-of-a-new-species-of-tetrameres-tetrameridae
#7
Verónica Núñez, Fabiana B Drago, María Celina Digiani, Lia I Lunaschi
During the summer of 2013, several specimens of Phoenicopterus chilensis (Phoenicopteridae) were found dead from unknown causes, in lakes from the endorheic system "Encadenadas del Oeste", Buenos Aires Province, Argentina. Two species of Nematoda were recovered from the proventriculus, one of them new for science. The tetramerid Tetrameres (Tetrameres) salina n. sp. is mainly characterized by having reduced pseudolabia, lips absent, six bifid teeth, males with lateral alae, four rows of somatic spines and length ratio of spicules 1:12-32, and large females with eggs lacking polar filaments...
June 1, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/28426407/helminth-cestoda-nematoda-and-coccidian-apicomplexa-eimeriidae-parasites-of-the-eastern-small-footed-myotis-myotis-leibii-chiroptera-vespertilionidae-from-arkansas-with-a-description-of-a-new-species-of-eimeria
#8
Chris T McAllister, R Scott Seville, Charles R Bursey
During May and July 2016, 32 eastern small-footed myotis (Myotis leibii) were collected from five counties of northwestern Arkansas and their faeces examined for coccidian parasites. Four of 32 (13%) M. leibii harboured an eimerian that we describe here as new. Oocysts of Eimeria sassei sp. n. were ovoidal to ellipsoidal with a bi-layered wall and measured (length × width, L × W) 18.3 × 15.2 µm, with an L/W ratio of 1.2. A micropyle and oocyst residuum were absent but 1-2 polar granules were present. Sporocysts were ovoidal, 9...
June 1, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/28426037/medicinal-plant-extracts-and-plant-derived-polyphenols-with-anthelmintic-activity-against-intestinal-nematodes
#9
REVIEW
V Spiegler, E Liebau, A Hensel
Covering: 2001 up to the end of 2016Polyphenols comprise a structurally diverse class of natural products. As the development of new anthelmintic drugs against soil-transmitted helminthiases is an urgent need and polyphenols are widely used in the treatment of nematode infections in traditional medicine and modern science, we summarize the state of knowledge in the period of mainly 2001 up to the end of 2016 on plant extracts with known polyphenolic composition and of defined polyphenols, mainly from the classes of condensed and hydrolysable tannins, flavonoids, and phenylpropanoids...
April 20, 2017: Natural Product Reports
https://www.readbyqxmd.com/read/28424628/branchial-pathomorphology-of-southern-bluefin-tuna-thunnus-maccoyii-castelnau-1872-infected-by-helminth-and-copepodan-parasites
#10
Mark B Adams, Craig J Hayward, Barbara F Nowak
Three metazoan parasites, a monogenean Hexostoma thynni and two species of copepods Pseudocycnus appendiculatus and Euryphorus brachypterus are known to parasitize the gills of ranched southern bluefin tuna (SBT) and other tuna species. However, there is no detailed information describing the pathological response to infection by these parasites in this species. Wild southern bluefin tuna Thunnus maccoyii (approximately 3 years of age), captured and towed to a grow-out site in the waters immediately south of Port Lincoln, South Australia were subsequently sampled (n = 10) monthly from March until August 2004 during commercial harvest operations...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28424091/investigations-into-the-association-between-soil-transmitted-helminth-infections-haemoglobin-and-child-development-indices-in-manufahi-district-timor-leste
#11
Suzy J Campbell, Susana V Nery, Catherine A D'Este, Darren J Gray, James S McCarthy, Rebecca J Traub, Ross M Andrews, Stacey Llewellyn, Andrew J Vallely, Gail M Williams, Archie C A Clements
BACKGROUND: Timor-Leste has a high prevalence of soil-transmitted helminth (STH) infections. High proportions of the population have been reported as being anaemic, and extremely high proportions of children as stunted or wasted. There have been no published analyses of the contributions of STH to these morbidity outcomes in Timor-Leste. METHODS: Using baseline cross-sectional data from 24 communities (18 communities enrolled in a cluster randomised controlled trial, and identically-collected data from six additional communities), analyses of the association between STH infections and community haemoglobin and child development indices were undertaken...
April 19, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28423191/origins-and-evolution-of-innate-lymphoid-cells-wardens-of-barrier-immunity
#12
Daniel R Neill, Robin J Flynn
The identification, in the late 2000's, of innate lymphoid cells (ILCs) as a new class of non-B, non-T lymphocytes has led to global efforts to understand their functions, plasticity, and evolutionary origins and to define their place within the leukocyte family. Although this work has uncovered striking similarities in the developmental cues, lineage-specific transcription factors and functional capacities of innate and adaptive lymphocytes, it has become clear that ILCs play a unique and defining role as stewards of barrier defence and that this sets them apart from their adaptive cousins...
April 19, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28421202/the-interaction-between-hiv-and-intestinal-helminth-parasites-coinfection-with-nutrition-among-adults-in-kwazulu-natal-south-africa
#13
B T Mkhize, M Mabaso, T Mamba, C E Napier, Z L Mkhize-Kwitshana
In South Africa few studies have examined the effects of the overlap of HIV and helminth infections on nutritional status. This cross-sectional study investigated the interaction between HIV and intestinal helminths coinfection with nutritional status among KwaZulu-Natal adults. Participants were recruited from a comprehensive primary health care clinic and stratified based on their HIV, stool parasitology, IgE, and IgG4 results into four groups: the uninfected, HIV infected, helminth infected, and HIV-helminth coinfected groups...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28420310/helminth-fauna-associated-with-three-neotropical-bat-species-chiroptera-mormoopidae-in-veracruz-mexico
#14
Emilio Clarke-Crespo, Gerardo Pérez-Ponce de León, Salvador Montiel-Ortega, Miguel Rubio-Godoy
Bats are recognized as potential hosts of pathogens exploiting the food chain to reach them as definitive hosts. However, very little is known about their endoparasites, especially for Neotropical bats. In this study, we assessed the helminth fauna associated with 3 insectivorous bat species roosting in the same single hot cave in central Veracruz, Mexico: the ghost-faced bat (Mormoops megalophylla), the naked-backed bat (Pteronotus davyi) and Wagner's mustached bat (Pteronotus personatus). During a period of 1 yr (April 2007-2008), a total of 135 mormoopid bats were collected and examined for helminths...
April 18, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28418865/anti-helminthic-niclosamide-inhibits-ras-driven-oncogenic-transformation-via-activation-of-gsk-3
#15
Sung Yong Ahn, Ji Hye Yang, Nam Hee Kim, Kyungro Lee, Yong Hoon Cha, Jun Seop Yun, Hee Eun Kang, Yoonmi Lee, Jiwon Choi, Hyun Sil Kim, Jong In Yook
Despite the importance of Ras oncogenes as a therapeutic target in human cancer, their 'undruggable' tertiary structures limit the effectiveness of anti-Ras drugs. Canonical Wnt signaling contributes to Ras activity by glycogen synthase kinase 3 (GSK-3)-dependent phosphorylation at the C-terminus and subsequent degradation. In the accompanying report, we show that the anti-helminthic niclosamide directly binds to GSK-3 and inhibits Axin functions in colon cancer cells, with reversion of Snail-mediated epithelial-mesenchymal transition...
March 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28418862/niclosamide-is-a-potential-therapeutic-for-familial-adenomatosis-polyposis-by-disrupting-axin-gsk3-interaction
#16
Sung Yong Ahn, Nam Hee Kim, Kyungro Lee, Yong Hoon Cha, Ji Hye Yang, So Young Cha, Eunae Sandra Cho, Yoonmi Lee, Jeong Seok Cha, Hyun Soo Cho, Yoon Jeon, Young-Su Yuk, Suebean Cho, Kyoung Tai No, Hyun Sil Kim, Ho Lee, Jiwon Choi, Jong In Yook
The epithelial-mesenchymal transition (EMT) is implicated in tumorigenesis and cancer progression, and canonical Wnt signaling tightly controls Snail, a key transcriptional repressor of EMT. While the suppression of canonical Wnt signaling and EMT comprises an attractive therapeutic strategy, molecular targets for small molecules reverting Wnt and EMT have not been widely studied. Meanwhile, the anti-helminthic niclosamide has been identified as a potent inhibitor of many oncogenic signaling pathways although its molecular targets have not yet been clearly identified...
March 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28417211/helminth-diversity-in-synanthropic-rodents-from-an-urban-ecosystem
#17
Diego Hancke, Olga Virginia Suárez
Richness and diversity of parasites depend on a set of interrelated factors related to the characteristics of the host, the environment and the parasites itself. In the City of Buenos Aires, rodent communities vary according to landscape structure. The goal of this paper was to study the variations of helminth richness and diversity among invasive rodent species in different landscape units of the City of Buenos Aires. 73% of the rodents were parasitized with at least one of the 10 identified helminth species...
April 17, 2017: EcoHealth
https://www.readbyqxmd.com/read/28415922/host-pharmacokinetics-and-drug-accumulation-of-anthelmintics-within-target-helminth-parasites-of-ruminants
#18
A Lifschitz, C Lanusse, L Alvarez
Anthelmintic drugs require effective concentrations to be attained at the site of parasite location for a certain period to assure their efficacy. The processes of absorption, distribution, metabolism and excretion (pharmacokinetic phase) directly influence drug concentrations attained at the site of action and the resultant pharmacological effect. The aim of the current review article was to provide an overview of the relationship between the pharmacokinetic features of different anthelmintic drugs, their availability in host tissues, accumulation within target helminths and resulting therapeutic efficacy...
April 17, 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/28412936/-1-h-nmr-analysis-of-feces-new-possibilities-in-the-helminthes-infections-research
#19
Sarantos Kostidis, Daria Kokova, Natalia Dementeva, Irina V Saltykova, Hye Kyong Kim, Young Hae Choi, Oleg A Mayboroda
BACKGROUND: Analysis of the stool samples is an essential part of routine diagnostics of the helminthes infections. However, the standard methods such Kato and Kato-Katz utilize only a fraction of the information available. Here we present a method based on the nuclear magnetic resonance spectroscopy (NMR) which could be auxiliary to the standard procedures by evaluating the complex metabolic profiles (or phenotypes) of the samples. METHOD: The samples were collected over the period of June-July 2015, frozen at -20 °C at the site of collection and transferred within four hours for the permanent storage at -80 °C...
April 17, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28407790/ultrastructure-and-localization-of-neorickettsia-in-adult-digenean-trematodes-provides-novel-insights-into-helminth-endobacteria-interaction
#20
Kerstin Fischer, Vasyl V Tkach, Kurt C Curtis, Peter U Fischer
BACKGROUND: Neorickettsia are a group of intracellular α proteobacteria transmitted by digeneans (Platyhelminthes, Trematoda). These endobacteria can also infect vertebrate hosts of the helminths and cause serious diseases in animals and humans. Neorickettsia have been isolated from infected animals and maintained in cell cultures, and their morphology in mammalian cells has been described. However, limited information is available on the morphology and localization of Neorickettsia in the trematode host...
April 13, 2017: Parasites & Vectors
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