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https://www.readbyqxmd.com/read/29775454/in-vivo-and-in-vitro-studies-of-cry5b-and-nicotinic-acetylcholine-receptor-agonist-anthelmintics-reveal-a-powerful-and-unique-combination-therapy-against-intestinal-nematode-parasites
#1
Yan Hu, Melanie Miller, Bo Zhang, Thanh-Thanh Nguyen, Martin K Nielsen, Raffi V Aroian
BACKGROUND: The soil-transmitted nematodes (STNs) or helminths (hookworms, whipworms, large roundworms) infect the intestines of ~1.5 billion of the poorest peoples and are leading causes of morbidity worldwide. Only one class of anthelmintic or anti-nematode drugs, the benzimidazoles, is currently used in mass drug administrations, which is a dangerous situation. New anti-nematode drugs are urgently needed. Bacillus thuringiensis crystal protein Cry5B is a powerful, promising new candidate...
May 18, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29774297/parasitic-and-zoonotic-meningoencephalitis-in-humans-and-equids-current-knowledge-and-the-role-of-halicephalobus-gingivalis
#2
REVIEW
ThankGod E Onyiche, Theresa O Okute, Oluwasina S Oseni, Dennis O Okoro, Abdullahi A Biu, Albert W Mbaya
Halicephalobus gingivalis is a saprophytic nematode parasite that causes a rare form of fatal meningoencephalomyelitis in equids, humans, and ruminants. This nematode has neurotropic activity, but has also been found in the kidney, liver, lungs, optic nerves and even heart of its host. Despite the zoonotic potential and severity of the disease, the epidemiology, pathogenesis, life cycle, and risk factors are poorly understood. Cases have been reported from several countries in Europe countries and North America but none is recorded in Africa except Egypt...
February 2018: Parasite Epidemiology and Control
https://www.readbyqxmd.com/read/29773890/intraperitoneal-administration-of-the-anti-il-23-antibody-prevents-the-establishment-of-intestinal-nematodes-in-mice
#3
M Gomez-Samblas, D Bernal, A Bolado-Ortiz, S Vilchez, F Bolás-Fernández, A M Espino, M Trelis, A Osuna
Previous studies have established that an increased Th-9 response creates a hostile environment for nematode parasites. Given that IL-23, a cytokine required for maintenance of the IL-17-secreting phenotype, has inhibitory effects on IL-9 production, we hypothesized that reducing circulating IL-23 by treatment with anti-IL-23 antibodies would reduce the establishment and development of parasitic intestinal nematodes. In this study, we show that animals treated with anti-IL-23 monoclonal antibodies showed a drastic reduction in the number of mouse pinworms (Aspiculuris tetraptera) recovered from the intestine (p < 0...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29773140/first-ocular-report-of-gurltia-paralysans-wolffh%C3%A3-gel-1933-in-cat
#4
Raquel Udiz-Rodríguez, Katherine Garcia-Livia, Maria Valladares-Salmerón, Maria Naira Dorta-Almenar, Natalia Martín-Carrillo, Aaron Martin-Alonso, Elena Izquierdo-Rodriguez, Carlos Feliu, Basilio Valladares, Pilar Foronda
A two-year-old cat from Tenerife, Canary Islands (Spain), presented with two months history of uveitis in the left eye. It had been treated for two months but still showed an active uveitis. After new treatment, eye examination showed a mobile worm in the anterior chamber. Following surgical removal, the worm was obtained. Morphological study revealed that it was a male metastrongyloid nematode (Nematoda: Metastrongyloidea) with caudal bursa and two similar spicules. Molecular tools based on the 18Sr RNA gene sequence identified the parasite as Gurltia paralysans, which is a neurotropic nematode previously found in South America...
May 15, 2018: Veterinary Parasitology
https://www.readbyqxmd.com/read/29772478/bacillus-thuringiensis-cry5b-protein-as-a-new-pan-hookworm-cure
#5
Yan Hu, Thanh-Thanh Nguyen, Alice C Y Lee, Joseph F Urban, Melanie M Miller, Bin Zhan, David J Koch, Jason B Noon, Ambily Abraham, Ricardo Toshio Fujiwara, Dwight D Bowman, Gary R Ostroff, Raffi V Aroian
Hookworms are intestinal nematode parasites that infect nearly half a billion people and are globally one of the most important contributors to iron-deficiency anemia. These parasites have significant impacts in developing children, pregnant women and working adults. Of all the soil-transmitted helminths or nematodes (STNs), hookworms are by far the most important, with disease burdens conservatively estimated at four million DALYs (Disability-Adjusted Life Years) and with productivity losses of up to US$139 billion annually...
May 4, 2018: International Journal for Parasitology, Drugs and Drug Resistance
https://www.readbyqxmd.com/read/29772005/atrophy-of-skin-draining-lymph-nodes-predisposes-for-impaired-immune-responses-to-secondary-infection-in-mice-with-chronic-intestinal-nematode-infection
#6
Xiaogang Feng, Cajsa Classon, Graciela Terán, Yunlong Yang, Lei Li, Sherwin Chan, Ulf Ribacke, Antonio Gigliotti Rothfuchs, Jonathan M Coquet, Susanne Nylén
Intestinal nematodes suppress immune responses in the context of allergy, gut inflammation, secondary infection and vaccination. Several mechanisms have been proposed for this suppression including alterations in Th2 cell differentiation and increased Treg cell suppressive function. In this study, we show that chronic nematode infection leads to reduced peripheral responses to vaccination because of a generalized reduction in the available responsive lymphocyte pool. We found that superficial skin-draining lymph nodes (LNs) in mice that are chronically infected with the intestinal nematode Heligmosomides polygyrus, do not reach the same cellularity as worm-free mice upon subsequent BCG infection in the skin...
May 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29771641/inhabiting-plant-roots-nematodes-and-truffles-polyphilus-a-new-helotialean-genus-with-two-globally-distributed-species
#7
Samad Ashrafi, Dániel G Knapp, Damien Blaudez, Michel Chalot, Jose G Maciá-Vicente, Imre Zagyva, Abdelfattah A Dababat, Wolfgang Maier, Gábor M Kovács
Fungal root endophytes, including the common group of dark septate endophytes (DSEs), represent different taxonomic groups and potentially diverse life strategies. In this study, we investigated two unidentified helotialean lineages found previously in a study of DSE fungi of semiarid grasslands, from several other sites, and collected recently from a pezizalean truffle ascoma and eggs of the cereal cyst nematode Heterodera filipjevi. The taxonomic positions and phylogenetic relationships of 21 isolates with different hosts and geographic origins were studied in detail...
March 26, 2018: Mycologia
https://www.readbyqxmd.com/read/29770670/-final-evaluation-of-control-program-of-key-parasitic-diseases-in-jinhu-county-2006-2015-jiangsu-province
#8
Sun Dao-Kuan, Zhang Cui-Ping
OBJECTIVE: To evaluate the implementation of the Control Program of Key Parasitic Diseases in Jinhu County from 2006 to 2015, so as to provide the evidence for the future work of prevention and control. METHODS: The historical data about key parasitoses were collected, and the organization management, financial support, capacity building, control effects, and so on were evaluated with the descriptive method. RESULTS: From 2006 to 2015, totally 19 technique educations were conducted, 844...
January 9, 2018: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
https://www.readbyqxmd.com/read/29770668/-surveillance-of-soil-borne-nematodiasis-in-population-in-hefei-city-2012-2015
#9
Pan Xiao-Xiang, An Jin-Sheng, Zhu Li, Wei Hong-Sheng
OBJECTIVE: To analyze the surveillance results of soil-borne nematodiasis in Hefei City from 2012 to 2015, so as to provide the evidence formulating the Hefei "Thirteen-five" parasitic disease prevention strategy. METHODS: The population in monitoring points in Changfeng County, Lujiang City and Chaohu County were investigated for Ascaris lumbricoides , Trichuristrichiura and hookworm infections with Kato-Katz technique every year from 2012 to 2015, and the children aged less than 6 years were checked for Enterobius vermicularis infection by using the cellophane tape method...
February 10, 2018: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
https://www.readbyqxmd.com/read/29770420/selenium-species-dependent-toxicity-bioavailability-and-metabolic-transformations-in-caenorhabditis-elegans
#10
Isabelle Rohn, Talke Anu Marschall, Nina Kroepfl, Kenneth Bendix Jensen, Michael Aschner, Simon Tuck, Doris Kuehnelt, Tanja Schwerdtle, Julia Bornhorst
The essential micronutrient selenium (Se) is required for various systemic functions, but its beneficial range is narrow and overexposure may result in adverse health effects. Additionally, the chemical form of the ingested selenium contributes crucially to its health effects. While small Se species play a major role in Se metabolism, their toxicological effects, bioavailability and metabolic transformations following elevated uptake are poorly understood. Utilizing the tractable invertebrate Caenorhabditis elegans allowed for an alternative approach to study species-specific characteristics of organic and inorganic Se forms in vivo, revealing remarkable species-dependent differences in the toxicity and bioavailability of selenite, selenomethionine (SeMet) and Se-methylselenocysteine (MeSeCys)...
May 17, 2018: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/29770270/lighten-up-the-dark-metazoan-parasites-as-indicators-for-the-ecology-of-antarctic-crocodile-icefish-channichthyidae-from-the-north-west-antarctic-peninsula
#11
Thomas Kuhn, Vera M A Zizka, Julian Münster, Regina Klapper, Simonetta Mattiucci, Judith Kochmann, Sven Klimpel
Due to its remote and isolated location, Antarctica is home to a unique diversity of species. The harsh conditions have shaped a primarily highly adapted endemic fauna. This includes the notothenioid family Channichthyidae. Their exceptional physiological adaptations have made this family of icefish the focus of many studies. However, studies on their ecology, especially on their parasite fauna, are comparatively rare. Parasites, directly linked to the food chain, can function as biological indicators and provide valuable information on host ecology (e...
2018: PeerJ
https://www.readbyqxmd.com/read/29769719/klhl22-activates-amino-acid-dependent-mtorc1-signalling-to-promote-tumorigenesis-and-ageing
#12
Jie Chen, Yuhui Ou, Yanyan Yang, Wen Li, Ye Xu, Yuntao Xie, Ying Liu
The mechanistic target of rapamycin complex 1 (mTORC1) is a master regulator of cell growth that responds to a diverse set of environmental cues, including amino acids1,2 . Deregulation of mTORC1 has been linked with metabolic diseases, cancer and ageing2-4 . In response to amino acids, mTORC1 is recruited by the Rag GTPases to the lysosome, its site of activation5,6 . The GATOR1 complex, consisting of DEPDC5, NPRL3 and NPRL2, displays GAP activity to inactivate Rag GTPases under amino-acid-deficient conditions 7 ...
May 16, 2018: Nature
https://www.readbyqxmd.com/read/29769290/assessment-of-an-organ-specific-de-novo-transcriptome-of-the-nematode-trap-crop-solanum-sisymbriifolium
#13
Alexander Q Wixom, N Carol Casavant, Joseph C Kuhl, Fangming Xiao, Louise-Marie Dandurand, Allan B Caplan
Solanum sisymbriifolium , also known as "Litchi Tomato" or "Sticky Nightshade," is an undomesticated and poorly researched plant related to potato and tomato. Unlike the latter species, S. sisymbriifolium induces eggs of the cyst nematode, Globodera pallida , to hatch and migrate into its roots, but then arrests further nematode maturation. In order to provide researchers with a partial blueprint of its genetic make-up so that the mechanism of this response might be identified, we used single molecule real time (SMRT) sequencing to compile a high quality de novo transcriptome of 41,189 unigenes drawn from individually sequenced bud, root, stem, and leaf RNA populations...
May 16, 2018: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/29768661/unravelling-changing-interspecific-interactions-across-environmental-gradients-using-markov-random-fields
#14
Nicholas J Clark, Konstans Wells, Oscar Lindberg
Inferring interactions between co-occurring species is key to identify processes governing community assembly. Incorporating interspecific interactions in predictive models is common in ecology, yet most methods do not adequately account for indirect interactions (where an interaction between two species is masked by their shared interactions with a third) and assume interactions do not vary along environmental gradients. Markov random fields (MRF) overcome these limitations by estimating interspecific interactions, while controlling for indirect interactions, from multispecies occurrence data...
May 16, 2018: Ecology
https://www.readbyqxmd.com/read/29766797/anti-aging-and-anti-aggregation-properties-of-polyphenolic-compounds-in-c-elegans
#15
Nikoletta Papaevgeniou, Niki Chondrogianni
Polyphenols constitute a group of compounds that have been highly investigated for their beneficial effects against various pathologic and non-pathologic conditions and diseases. Among their multi-faceted properties, their anti-oxidant potential nominates them as ideal protective candidates for conditions characterized by elevated levels of oxidative stress, including aging and age-related diseases. The nematode Caenorhabditis elegans is a multicellular model organism that is highly exploited in studies related to aging and age-associated diseases...
May 15, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29766218/qtl-mapping-and-epistatic-interaction-analysis-of-field-resistance-to-sudden-death-syndrome-fusarium-virguliforme-in-soybean
#16
Ruijuan Tan, Bradley Serven, Paul J Collins, Zhongnan Zhang, Zixiang Wen, John F Boyse, Cuihua Gu, Martin I Chilvers, Brian W Diers, Dechun Wang
Two interactive quantitative trait loci (QTLs) controlled the field resistance to sudden death syndrome (SDS) in soybean. The interaction between them was confirmed. Sudden death syndrome (SDS), caused by Fusarium virguliforme, is a major disease of soybean [Glycine max (L.) Merr.] in the United States. Breeding for soybean resistance to SDS is the most cost-effective method to manage the disease. The objective of this study was to identify and characterize quantitative trait loci (QTLs) underlying field resistance to SDS in a recombinant inbred line population from the cross GD2422 × LD01-5907...
May 15, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/29764472/high-species-diversity-of-trichostrongyle-parasite-communities-within-and-between-western-canadian-commercial-and-conservation-bison-herds-revealed-by-nemabiome-metabarcoding
#17
Russell W Avramenko, Ana Bras, Elizabeth M Redman, Murray R Woodbury, Brent Wagner, Todd Shury, Stefano Liccioli, M Claire Windeyer, John S Gilleard
BACKGROUND: Many trichostrongylid nematode species are reported to infect bison, some of which are major causes of disase and production loss in North American bison herds. However, there is little information on the species distribution and relative abundance of these parasites in either commercial or conservation herds. This is largely because trichostrongylid nematode species cannot be distinguished by visual microscopic examination of eggs present in feces. Consequently, we have applied ITS2 rDNA nemabiome metabarcoding to describe the trichostrongyle parasite species diversity in 58 bison production groups derived from 38 commercial North American plains bison (Bison bison bison) herds from across western Canada, and two bison conservation herds located in Elk Island National Park (EINP) [plains bison and wood bison (Bison bison athabascae)] and one in Grasslands National Park (GNP) (plains bison)...
May 15, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29762080/molecular-identification-of-hysterothylacium-spp-in-fishes-from-the-southern-mediterranean-sea-southern-italy
#18
Antonella Costa, Stefania Graci, Gaetano Cammilleri, Maria Drussilla Buscemi, Rosaria Collura, Antonio Vella, Vincenzo Ferrantelli
In this research a total of 3,017 fish samples belonging to 11 species from Sicily's Mediterranean coasts were examined for the presence of Hysterothylacium spp. larvae, which were then used in subsequent phylogenetic studies. Fifty-eight Raphidascaridid parasitic nematodes were found in the examined fish, with prevalence values ranging from 0.2% in anchovies to 60% in forkbeard samples. Twenty-seven parasites were identified as Hysterothylacium fabri and Hysterothylacium aduncum by sequencing the following regions: the nuclear ribosomal internal transcribed spacer (ITS) and the mitochondrial cytochrome c oxidase subunit II (cox2)...
May 15, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/29761467/using-wormbase-parasite-an-integrated-platform-for-exploring-helminth-genomic-data
#19
Bruce J Bolt, Faye H Rodgers, Myriam Shafie, Paul J Kersey, Matthew Berriman, Kevin L Howe
WormBase ParaSite ( parasite.wormbase.org ) is a comprehensive resource for the genomes of parasitic nematodes and flatworms (helminths). It currently includes genomic data for over 100 helminth species, adding value by way of consistent functional annotation, gene comparative analysis and gene expression analysis. We provide several ways of exploring the data including a choice of genome browsers, genome and gene summary pages, text and sequence searching, a query wizard, bulk downloads, and programmatic interfaces...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29761466/using-wormbase-a-genome-biology-resource-for-caenorhabditis-elegans-and-related-nematodes
#20
Christian Grove, Scott Cain, Wen J Chen, Paul Davis, Todd Harris, Kevin L Howe, Ranjana Kishore, Raymond Lee, Michael Paulini, Daniela Raciti, Mary Ann Tuli, Kimberly Van Auken, Gary Williams
WormBase ( www.wormbase.org ) provides the nematode research community with a centralized database for information pertaining to nematode genes and genomes. As more nematode genome sequences are becoming available and as richer data sets are published, WormBase strives to maintain updated information, displays, and services to facilitate efficient access to and understanding of the knowledge generated by the published nematode genetics literature. This chapter aims to provide an explanation of how to use basic features of WormBase, new features, and some commonly used tools and data queries...
2018: Methods in Molecular Biology
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