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https://www.readbyqxmd.com/read/28241017/egf-mediated-egfr-erk-signaling-pathway-promotes-germinative-cell-proliferation-in-echinococcus-multilocularis-that-contributes-to-larval-growth-and-development
#1
Zhe Cheng, Fan Liu, Xiu Li, Mengya Dai, Jianjian Wu, Xinrui Guo, Huimin Tian, Zhijie Heng, Ying Lu, Xiaoli Chai, Yanhai Wang
BACKGROUND: Larvae of the tapeworm E. multilocularis cause alveolar echinococcosis (AE), one of the most lethal helminthic infections in humans. A population of stem cell-like cells, the germinative cells, is considered to drive the larval growth and development within the host. The molecular mechanisms controlling the behavior of germinative cells are largely unknown. METHODOLOGY/PRINCIPAL FINDINGS: Using in vitro cultivation systems we show here that the EGFR/ERK signaling in the parasite can promote germinative cell proliferation in response to addition of human EGF, resulting in stimulated growth and development of the metacestode larvae...
February 27, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28239609/application-of-taxonomic-modeling-to-microbiota-data-mining-for-detection-of-helminth-infection-in-global-populations
#2
Mahbaneh Eshaghzadeh Torbati, Makedonka Mitreva, Vanathi Gopalakrishnan
Human microbiome data from genomic sequencing technologies is fast accumulating, giving us insights into bacterial taxa that contribute to health and disease. The predictive modeling of such microbiota count data for the classification of human infection from parasitic worms, such as helminths, can help in the detection and management across global populations. Real-world datasets of microbiome experiments are typically sparse, containing hundreds of measurements for bacterial species, of which only a few are detected in the bio-specimens that are analyzed...
December 2016: Data (Basel)
https://www.readbyqxmd.com/read/28229044/lesser-snow-goose-helminths-show-recurring-and-positive-parasite-infection-diversity-relations
#3
Felipe Dargent, André Morrill, Ray T Alisauskas, J Daniel McLaughlin, Dave Shutler, Mark R Forbes
The patterns and mechanisms by which biological diversity is associated with parasite infection risk are important to study because of their potential implications for wildlife population's conservation and management. Almost all research in this area has focused on host species diversity and has neglected parasite diversity, despite evidence that parasites are important drivers of community structure and ecosystem processes. Here, we assessed whether presence or abundance of each of nine helminth species parasitizing lesser snow geese (Chen caerulescens) was associated with indices of parasite diversity (i...
April 2017: International Journal for Parasitology. Parasites and Wildlife
https://www.readbyqxmd.com/read/28229042/an-investigation-of-parasitic-infections-and-review-of-molecular-characterization-of-the-intestinal-protozoa-in-nonhuman-primates-in-china-from-2009-to-2015
#4
Junqiang Li, Haiju Dong, Rongjun Wang, Fuchang Yu, Yayun Wu, Yankai Chang, Chenrong Wang, Meng Qi, Longxian Zhang
Parasites are a well-known threat to nonhuman primate (NHP) populations, and potentially cause zoonotic diseases in humans. In this study, the basic data was provided of the parasites in NHPs and the molecular characterization of the Enterocytozoon bieneusi, Giardia duodenalis, Cryptosporidium spp., and Entamoeba spp. were reviewed, which were found in these samples. A total of 3349 fecal samples were collected from 34 species reared at 17 districts in zoos, farms, free-range, or research laboratories, and examined microscopically...
April 2017: International Journal for Parasitology. Parasites and Wildlife
https://www.readbyqxmd.com/read/28228914/occurrence-of-intestinal-parasitic-contamination-in-select-consumed-local-raw-vegetables-and-fruits-in-kuantan-pahang
#5
Afzan Mat Yusof, Mardhiah Mohammad, Muna Abshir Abdullahi, Zeehaida Mohamed, Robaiza Zakaria, Ridhwan Abdul Wahab
Intestinal parasitic infections are one of the most common causes of human diseases that result in serious health and economic issues in many developing and developed countries. Raw vegetables and fruits play an important role in transmitting parasites to humans. Hence, the aim of this study was to investigate the parasitological contamination of select commonly consumed local leafy vegetables and fruits in Kuantan, Malaysia. One kilogram of locally consumed raw vegetables and fruits were collected randomly from the Kuantan wet market (Pasar Tani) during the monsoon season (November 2014-January 2015) and the dry season (February 2015-April 2015)...
January 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28224678/microbiome-autoimmunity-allergy-and-helminth-infection-the-importance-of-the-pregnancy-period
#6
Xian Chen, Su Liu, Qiao Tan, Yehuda Shoenfeld, Yong Zeng
Pregnancy is a special physical period in reproductive age women, which has a beneficial influence on the course of certain autoimmune diseases. It has been recently suggested that the microbiome undergoes profound changes during pregnancy that are associated with host physiological and immunological adaptations. The maternal microbiome remodeling during pregnancy is an active response of the mother, possibly to alter immune system status and to facilitate metabolic and immunological adaptations, which are needed for a successful pregnancy...
February 21, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28224033/distribution-and-risk-factors-associated-with-intestinal-parasite-infections-among-children-with-gastrointestinal-disorders
#7
Hamed Kiani, Ali Haghighi, Roya Salehi, Eznollah Azargashb
AIM: Prevalence and risk factors associated with intestinal parasites among children ≤ 12 years old in Nahavand county western Iran, was the objective of this search. BACKGROUND: Intestinal parasites (IPs) are important health problems among most societies. METHODS: This cross sectional study was carried out during 6 months from April to September 2014 in Nahavand County western Iran. Fecal samples were collected from 500 children suffering from gastrointestinal disorders (GIDs) and examined by macroscopy and microscopic (using saline and iodine wet mount, formalin-ether sedimentation, Trichrome and modified Ziehl Neelsen staining) methods...
December 2016: Gastroenterology and Hepatology From Bed to Bench
https://www.readbyqxmd.com/read/28224032/prevalence-of-intestinal-parasites-in-referred-individuals-to-the-medical-centers-of-tonekabon-city-mazandaran-province
#8
Samira Shahdoust, Maryam Niyyati, Ali Haghighi, Eznoallah Azargashb, Mohammad Reza Khataminejad
AIM: The aim of the present study was to determine the prevalence of intestinal parasites and their relation with socio-demographic data in referred individuals to the medical centers in Tonekabon, Mazandaran province, 2015. BACKGROUND: Due to the climatic and ecological conditions in Mazandaran province, determination of the status of intestinal parasites among referred individuals to the medical centers of Tonekabon city can help researchers and healthcare services to prevent and/or control of parasitic infection in this region...
December 2016: Gastroenterology and Hepatology From Bed to Bench
https://www.readbyqxmd.com/read/28215876/in-vitro-lectin-binding-to-the-outer-surface-of-spirocerca-lupi-at-different-life-stages
#9
I Aroch, I Arogeti, A Marcovics, Y Spiegel, E Lavy
Spirocerca lupi is the esophageal nematode of dogs. Early, transient eosinophilia occurs in experimentally infected dogs, but is absent in advanced cases, suggesting that the nematode evades the dog's immune system. Lectins are proteins or glycoproteins of plant or animal origin, binding different saccharides, with varying specificities and avidities, used to characterize surface haptens in plant and animal parasitic helminths. This study investigated the in vitro binding of six lectins (Concanavalin A [ConA], wheat germ agglutinin [WGA], peanut agglutinin [PNA], soybean agglutinin [SBA], Dolichus biflorus agglutinin [DBA] and Ulex earopaeus agglutinin I [UEA]) to the surface of S...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215862/natural-infection-of-the-feline-lungworm-aelurostrongylus-abstrusus-in-the-invasive-snail-achatina-fulica-from-argentina
#10
Romina Valente, Julia Ines Diaz, Oscar Daniel Salomón, Graciela Teresa Navone
The giant African snail Achatina fulica is an invasive mollusk native to Africa, the first record in Argentina was in Puerto Iguazú, in northeastern Argentina in 2010. Recently it was reported in Corrientes Province. This snail can act as an intermediate host of Metastrongyloidea nematodes of importance in public health as: Angiostrongylus cantonensis, Angiostrongylus costaricensis and Angiostrongylus vasorum. Taking into account the presence of A. fulica in Argentina, the objectives of this study is to assess the presence of Metastrongyloidea nematodes in this mollusk species in Puerto Iguazú, Misiones, close to the international border with Brazil and Paraguay...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215861/effects-of-anthelmintic-treatment-and-feed-supplementation-on-parasite-infections-and-morbidity-parameters-in-cambodian-cattle
#11
Veronique Dermauw, Sothy Meas, Bunthon Chea, Thierry Onkelinx, San Sorn, Davun Holl, Johannes Charlier, Jozef Vercruysse, Pierre Dorny
Helminth infections are the cause of morbidity in Cambodian cattle but other factors such as nutritional deficiencies and concurrent diseases may enhance the effects of parasites. The present study aimed to investigate the impact of anthelmintic treatment, feed supplementation, or both on gastrointestinal strongyle (GIS) and trematode infections as well as on morbidity parameters in Cambodian village cattle. At the beginning of the dry season, cattle populations in six villages were randomly assigned to a group: (A) receiving anthelmintic treatment (ivermectin+clorsulon) at week 0; (P) feed pellet supplementation during week 0-13 or both (AP)...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215859/evaluation-of-molecular-methods-for-the-field-study-of-the-natural-history-of-dicrocoelium-dendriticum
#12
Gillian Mitchell, Grace Cuthill, Alex Haine, Ruth Zadoks, Umer Chaudhry, Philip Skuce, Neil Sargison
There is a need for improved methods for the study of the impacts of climatic and livestock management change on the epidemiology of production-limiting helminth parasitic diseases. In this study we report the application of molecular methods to describe the natural history of the small lancet fluke, Dicrocoelium dendriticum on Machair pastures on the Inner Hebridean Isle of Coll. Our results build upon those of the only previous historic field study of D. dendriticum in the British Isles that had been undertaken on the same study site...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215278/nucleic-acid-immunity
#13
G Hartmann
Organisms throughout biology need to maintain the integrity of their genome. From bacteria to vertebrates, life has established sophisticated mechanisms to detect and eliminate foreign genetic material or to restrict its function and replication. Tremendous progress has been made in the understanding of these mechanisms which keep foreign or unwanted nucleic acids from viruses or phages in check. Mechanisms reach from restriction-modification systems and CRISPR/Cas in bacteria and archaea to RNA interference and immune sensing of nucleic acids, altogether integral parts of a system which is now appreciated as nucleic acid immunity...
2017: Advances in Immunology
https://www.readbyqxmd.com/read/28215208/editorial-parasitic-helminths-in-latin-america-and-the-caribbean
#14
C Fernández
No abstract text is available yet for this article.
February 20, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28215202/helminth-parasites-of-the-chub-mackerel-scomber-colias-off-the-tunisian-coast-and-their-use-in-stock-discrimination
#15
M Feki, M Châari, L Neifar, L Boudaya
Nine helminth parasites were used as biological tags to discriminate diverse areas of Scomber colias Gmelin, 1789. During three seasons, a total of 369 fish were examined in four zones off the Tunisian coast, including Bizerte in the north, Kelibia and Mahdia in the centre and Zarzis in the south. Discriminant analyses were used to identify distinct areas of S. colias. Fish from Bizerte were grouped as one area and were correlated negatively with the monogenean Grubea cochlear and the digenean Lecithocladium excisum...
February 20, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28215185/nutritive-value-and-anthelmintic-effect-of-sainfoin-pellets-fed-to-experimentally-infected-growing-rabbits
#16
H Legendre, H Hoste, T Gidenne
Alternative strategies to synthetic chemical drugs are needed in livestock and are a key issue in organic farming today. This study aimed at examining the potentialities of sainfoin, a legume rich in condensed tannins, as a nutraceutical that combines nutritive and antiparasitic effects in rabbits. To test the effect of infection with a helminth (I: infected groups; NI: not infected groups) and the effect of substituting 40% of the alfalfa in a control diet (C) with sainfoin (diet S), four groups of 16 weaned rabbits were arranged according to a 2×2 bifactorial design...
February 20, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28214519/detection-and-quantification-of-soil-transmitted-helminths-in-environmental-samples-a-review-of-current-state-of-the-art-and-future-perspectives
#17
REVIEW
Isaac Dennis Amoah, Gulshan Singh, Thor Axel Stenström, Poovendhree Reddy
It is estimated that over a billion people are infected with soil-transmitted helminths (STHs) globally with majority occurring in tropical and subtropical regions of the world. The roundworm (Ascaris lumbricoides), whipworm (Trichuris trichiura), and hookworms (Ancylostoma duodenale and Necator americanus) are the main species infecting people. These infections are mostly gained through exposure to faecally contaminated water, soil or contaminated food and with an increase in the risk of infections due to wastewater and sludge reuse in agriculture...
February 15, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28213655/molecular-characterization-of-the-unique-mesostephanus-appendiculatus-trematoda-cyathocotylidae-by-small-ribosomal-rna-from-egypt
#18
Nasr M El-Bahy, Eman K Bazh, Shimaa S Sorour, Nagwa M Elhawary
M esostephanus appendiculatus (Family: Cyathocotylidae) is one of the unique trematodes that complete their cycles in human and animal intestines in many countries of the world. The main source of its transmission is eating raw or undercooked infected fish muscle. Earliest analyses of genes to different parasites supported the analysis of helminthes either biological or morphological. This paper detected M. appendiculatus sequence with GenBank accession number gb (KY026782). Comparison of M. appendiculatus with other helminthes using BioEdit 7 and MEGA7 program shows some similarity in different points along its sequence...
February 18, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28212788/immunology-of-alveolar-and%C3%A2-cystic-echinococcosis-ae-and-ce
#19
B Gottstein, P Soboslay, E Ortona, J Wang, A Siracusano, D Α Vuitton
Cystic and alveolar echinococcosis are severe chronic helminthic diseases caused by the cystic growth or the intrahepatic tumour-like growth of the metacestode of Echinococcus granulosus or Echinococcus multilocularis, respectively. Both parasites have evolved sophisticated strategies to escape host immune responses, mainly by manipulating and directing this immune response towards anergy and/or tolerance. Recent research studies have revealed a number of respective immunoregulatory mechanisms related to macrophages and dendritic cell as well as T cell activities (regulatory T cells, Tregs)...
2017: Advances in Parasitology
https://www.readbyqxmd.com/read/28212668/association-of-community-sanitation-usage-with-soil-transmitted-helminth-infections-among-school-aged-children-in-amhara-region-ethiopia
#20
William E Oswald, Aisha E P Stewart, Michael R Kramer, Tekola Endeshaw, Mulat Zerihun, Berhanu Melak, Eshetu Sata, Demelash Gessese, Tesfaye Teferi, Zerihun Tadesse, Birhan Guadie, Jonathan D King, Paul M Emerson, Elizabeth K Callahan, Matthew C Freeman, W Dana Flanders, Thomas F Clasen, Christine L Moe
BACKGROUND: Globally, in 2010, approximately 1.5 billion people were infected with at least one species of soil-transmitted helminth (STH), Ascaris lumbricoides, Trichuris trichiura, hookworm (Ancylostoma duodenale and Necator americanus). Infection occurs through ingestion or contact (hookworm) with eggs or larvae in the environment from fecal contamination. To control these infections, the World Health Organization recommends periodic mass treatment of at-risk populations with deworming drugs...
February 17, 2017: Parasites & Vectors
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