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https://www.readbyqxmd.com/read/28288926/development-of-new-microsatellites-for-the-hookworm-ancylostoma-caninum-and-analysis-of-genetic-diversity-in-brazilian-populations
#1
Élida Mara Leite Rabelo, Rodrigo Rodrigues Cambraia de Miranda, Luis Fernando Viana Furtado, Rodrigo Aparecido Fernandes Redondo, Jacob Adam Tennessen, Michael Scott Blouin
Considering the great efforts towards formulating a vaccine against hookworms, and the concerns about the spread of drug resistance through hookworm populations, it is justified to study the molecular diversity and population genetic structure of these nematodes. This work had the aim to develop microsatellite markers to investigate the genetic structure and the molecular diversity of Brazilian populations of Ancylostoma caninum. Seven microsatellites markers were successfully used to characterize five Brazilian populations...
March 10, 2017: Infection, Genetics and Evolution
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
#2
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/28222192/blastocystis-subtyping-and-its-association-with-intestinal-parasites-in-children-from-different-geographical-regions-of-colombia
#3
Juan David Ramírez, Carolina Flórez, Mario Olivera, María Consuelo Bernal, Julio Cesar Giraldo
Blastocystis is a common enteric protist colonizing probably more than 1 billion people with a large variety of non-human hosts. Remarkable genetic diversity has been observed, leading to the subdivision of the genus into multiple subtypes (ST), some of which are exclusively found in non-human hosts. The aim of this study was to determine the distribution of Blastocystis STs/18S alleles in symptomatic (abdominal pain, anal pruritus, diarrhea, headache, nauseas and/or vomit) and asymptomatic children from nine geographical regions of Colombia...
2017: PloS One
https://www.readbyqxmd.com/read/28215215/the-mitochondrial-genome-of-ancylostoma-tubaeforme-from-cats-in-china
#4
X L Shi, Y Q Fu, A Y Abdullahi, M W Wang, F Yang, X G Yu, W D Pan, X X Yan, J X Hang, P Zhang, G Q Li
Ancylostoma tubaeforme may infect canids, felids and humans, and pose a potential risk to public health. Polymerase chain reaction (PCR) techniques were used to amplify the complete mitochondrial (mt) genome sequence of A. tubaeforme from cats and to analyse its sequence characteristics after molecular identification based on the internal transcribed spacer ITS1+ sequence. The results show that the complete mt genome sequence (GenBank accession number KY070315) of A. tubaeforme from cats was 13,730 bp in length, including 12 protein-coding genes, 22 transfer RNA (tRNA) genes, two ribosomal RNA (rRNA) genes, two non-coding regions and an AT-rich region...
February 20, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28212668/association-of-community-sanitation-usage-with-soil-transmitted-helminth-infections-among-school-aged-children-in-amhara-region-ethiopia
#5
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
https://www.readbyqxmd.com/read/28191818/changes-in-protein-expression-after-treatment-with-ancylostoma-caninum-excretory-secretory-products-in-a-mouse-model-of-colitis
#6
Javier Sotillo, Ivana Ferreira, Jeremy Potriquet, Thewarach Laha, Severine Navarro, Alex Loukas, Jason Mulvenna
Different reports have highlighted the potential use of helminths and their secretions in the treatment of inflammatory bowel disease (IBD) conditions; however, no reports have investigated their effects at a proteome level. Herein, we characterise the protein expression changes that occur in lamina propria (LP) and the intestinal epithelial cells (IEC) of mice with dextran sulfate sodium (DSS)-induced colitis treated with Ancylostoma caninum excretory/secretory (ES) products using a quantitative proteomic approach...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28122583/abundance-zoonotic-potential-and-risk-factors-of-intestinal-parasitism-amongst-dog-and-cat-populations-the-scenario-of-crete-greece
#7
Despoina Kostopoulou, Edwin Claerebout, Dimitrios Arvanitis, Panagiota Ligda, Nikolaos Voutzourakis, Stijn Casaert, Smaragda Sotiraki
BACKGROUND: The objectives of this study were to evaluate the prevalence and infection intensity of intestinal parasites in different dog and cat populations in Crete, Greece, estimate the zoonotic risk and identify risk factors. METHODS: Faecal samples from shelter, household and shepherd dogs and shelter and household cats were analyzed using sedimentation/flotation techniques. Giardia and Cryptosporidium were detected by a quantitative direct immunofluorescence assay (IFA)...
January 25, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28114314/diagnosing-polyparasitism-in-a-high-prevalence-setting-in-beira-mozambique-detection-of-intestinal-parasites-in-fecal-samples-by-microscopy-and-real-time-pcr
#8
Lynn Meurs, Anton M Polderman, Natalie V S Vinkeles Melchers, Eric A T Brienen, Jaco J Verweij, Bernhard Groosjohan, Felisberto Mendes, Manito Mechendura, Dagmar H Hepp, Marijke C C Langenberg, Rosanne Edelenbosch, Katja Polman, Lisette van Lieshout
BACKGROUND: Many different intestinal parasite species can co-occur in the same population. However, classic diagnostic tools can only frame a particular group of intestinal parasite species. Hence, one or two tests do not suffice to provide a complete picture of infecting parasite species in a given population. The present study investigated intestinal parasitic infections in Beira, Mozambique, i.e. in the informal settlement of Inhamudima. Diagnostic accuracy of five classical microscopy techniques and real-time PCR for the detection of a broad spectrum of parasites was compared...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28100811/the-molecular-speciation-of-soil-transmitted-helminth-eggs-collected-from-school-children-across-six-endemic-countries
#9
Santosh George, Peter Geldhof, Marco Albonico, Shaali M Ame, Jeffrey M Bethony, Dirk Engels, Zeleke Mekonnen, Antonio Montresor, Sopheak Hem, Louis-Albert Tchuem-Tchuenté, Nguyen Thu Huong, Gagandeep Kang, Jozef Vercruysse, Bruno Levecke
BACKGROUND: The diagnosis of soil-transmitted helminths (STHs; Ascaris, Trichuris and hookworms) is traditionally based on the demonstration of eggs in stool using microscopic techniques. While molecular techniques are more appropriate to speciate STH species they are seldom applied. In this study we speciated STH eggs from stool using molecular techniques to gain insights into the distribution of both human and animal STH species in the human host. METHODS: We speciated 207 STH egg isolates from stool collected during the baseline survey of six drug efficacy trials conducted in Brazil, Cambodia, Cameroon, Ethiopia, Tanzania and Vietnam applying a PCR - restriction fragment length polymorphisms based approach...
January 18, 2017: Transactions of the Royal Society of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28098549/diffuse-unilateral-subacute-neuroretinitis-caused-by-ancylostoma-hookworm
#10
Sven Poppert, Martin Heideking, Hansjürgen Agostini, Moritz Fritzenwanker, Nicole Wüppenhorst, Birgit Muntau, Philipp Henneke, Winfried Kern, Jürgen Krücken, Bernd Junker, Markus Hufnagel
Diffuse unilateral subacute neuroretinitis is an ocular infectious disease caused by several distinct nematodes. Definite identification of the involved nematodes is rarely achieved. We report on the molecular-based genetic identification of an Ancylostoma ceylanicum hookworm implicated in a case of diffuse unilateral subacute neuroretinitis in a child.
February 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28098526/ancylostoma-ceylanicum-hookworm-in-the-solomon-islands
#11
Richard S Bradbury, Sze Fui Hii, Humpress Harrington, Richard Speare, Rebecca Traub
Although hookworm is highly prevalent in the Solomon Islands, the species involved are unknown. We initiated this study in response to finding Ancylostoma ceylanicum hookworm in a peacekeeper in Australia who had returned from the Solomon Islands. Kato-Katz fecal surveys performed in 2013 and 2014 in 2 village groups in East Malaita, Solomon Islands, identified hookworm-positive samples. These specimens were tested by cytochrome oxidase 1 (cox-1) gene multiplex PCR and sequenced. Of 66 positive specimens, 54 (81...
February 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28077747/first-molecular-identifications-of-necator-americanus-and-ancylostoma-ceylanicum-infecting-rural-communities-in-lower-myanmar
#12
Win Pa Pa Aung, Thi Thi Htoon, Htay Htay Tin, Oranuch Sanpool, Jurairat Jongthawin, Lakkhana Sadaow, Issarapong Phosuk, Rutchanee Ropai, Pewpan M Intapan, Wanchai Maleewong
Hookworms are enteric parasitic roundworms infecting an estimated 400 million persons worldwide. Herein, we provide the first molecular identifications of human hookworms from certain parts of rural Lower Myanmar. DNA was extracted from hookworm-positive stool samples, as determined by microscopy. DNA sequences of the partial internal transcribed spacer 1, full length 5.8S gene, and partial internal transcribed spacer 2 were determined and compared with available hookworm sequences from public databases. Of the 11 polymerase chain reaction-positive samples, eight (Bago Region, N = 4; Mon State, N = 4) yielded sequences with high similarity to those of Necator americanus A further three sequences (Mon State, N = 2; Bago Region, N = 1) showed high similarity with those of Ancylostoma ceylanicum The latter is primarily a parasite of dogs and represents a zoonosis...
January 11, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28074315/the-roundworm-strongyloides-stercoralis-in-children-dogs-and-soil-inside-and-outside-a-segregated-settlement-in-eastern-slovakia-frequent-but-hardly-detectable-parasite
#13
G Štrkolcová, M Goldová, E Bocková, J Mojžišová
A comparative study was carried out to evaluate the Strongyloides stercoralis infections in children and dogs inside and outside the segregated settlement in Medzev, Eastern Slovakia, and a survey of the soil within the settlement was included. Applying the Koga agar plate (KAP) culture method and microscopy examination of stool samples collected from 60 Roma and 21 nonRoma children, no larvae of S. stercoralis were detected but eggs of three nematodes (Ascaris lumbricoides, Trichuris trichiura, and Enterobius vermicularis) and cysts of two protozoan endoparasites (Giardia duodenalis and Cryptosporidium spp...
January 10, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28007598/identification-of-acap5-as-a-novel-factor-xa-inhibitor-with-both-direct-and-allosteric-inhibition
#14
Yuanjun Zhu, Yuan Lin, Xiaoyan Liu, Wenhui Hu, Yinye Wang
Ancylostoma caninum anticoagulant peptide 5 (AcAP5) is a potent inhibitor for coagulation factor Xa (FXa). Previous studies show that AcAP5 binds to FXa at the active site, and/or the exosite. The active site-binding contributes to direct blocking of FXa catalytic activity, but the effect of exosite-binding and the underlying mechanism remain unknown. To investigate whether and how the exosite-binding affects FXa function, we prepared several AcAP5 mutants with modifications to the active site-binding or exosite-binding region...
January 29, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28007484/diagnosis-of-intestinal-parasites-in-a-rural-community-of-venezuela-advantages-and-disadvantages-of-using-microscopy-or-rt-pcr
#15
COMPARATIVE STUDY
Renzo Nino Incani, Elizabeth Ferrer, Denise Hoek, Robbert Ramak, Jeroen Roelfsema, Lapo Mughini-Gras, Titia Kortbeek, Elena Pinelli
A cross-sectional study was carried out to determine the prevalence and diagnostic performance of microscopy and real time PCR (RT-PCR) for 14 intestinal parasites in a Venezuelan rural community with a long history of persistent intestinal parasitic infections despite the implementation of regular anthelminthic treatments. A total of 228 participants were included in this study. A multiplex RT-PCR was used for the detection of Dientamoeba fragilis, Giardia intestinalis, Cryptosporidium sp. and a monoplex RT-PCR for Entamoeba histolytica...
March 2017: Acta Tropica
https://www.readbyqxmd.com/read/27956777/helminth-infections-in-domestic-dogs-from-russia
#16
REVIEW
T V Moskvina, A V Ermolenko
Dogs are the hosts for a wide helminth spectrum including tapeworms, flatworms, and nematodes. These parasites affect the dog health and cause morbidity and mortality, especially in young and old animals. Some species, as Toxocara canis, Ancylostoma caninum, Dipylidium caninum, and Echinococcus spp. are well-known zoonotic parasites worldwide, resulting in high public health risks. Poor data about canine helminth species and prevalence are available in Russia, mainly due to the absence of official guidelines for the control of dog parasites...
November 2016: Veterinary World
https://www.readbyqxmd.com/read/27925073/frequency-of-gastrointestinal-parasites-in-cats-seen-at-the-university-of-s%C3%A3-o-paulo-veterinary-hospital-brazil
#17
Solange Maria Gennari, Juliana Isabel Giuli da Silva Ferreira, Hilda Fátima de Jesus Pena, Marcelo Bahia Labruna, Sérgio Dos Santos Azevedo
The frequency of gastrointestinal infections in 502 cats seen at the Veterinary Hospital of the University of São Paulo, SP, Brazil, between 2005 and 2014, was measured. The samples were analyzed using methods of flotation and sedimentation. The results were compared with those from studies published previously using fecal samples from the same hospital at different times. Associations between the frequency of positivity for each parasite and age, breed, sex, diarrhea and use of anthelmintic were investigated (chi-square or Fisher's exact tests)...
October 2016: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/27925072/occurrences-of-gastrointestinal-parasites-in-fecal-samples-from-domestic-dogs-in-s%C3%A3-o-paulo-sp-brazil
#18
Juliana Isabel Giuli da Silva Ferreira, Hilda Fátima Jesus Pena, Sérgio Santos Azevedo, Marcelo Bahia Labruna, Solange Maria Gennari
Occurrences of gastrointestinal parasites were assessed in fecal samples from 3,099 dogs in the metropolitan region of São Paulo, SP, that were treated at the Veterinary Hospital of the University of São Paulo Veterinary School. The samples were analyzed using the flotation and centrifugal sedimentation methods. The results were compared with those from previous studies (at different times). The frequency of each parasite was correlated with the dogs' ages, breeds and gender, as well as the occurrences of diarrhea and the use of anthelmintics, by means of the chi-square or Fisher exact test...
October 2016: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/27876926/a-survey-study-on-gastrointestinal-parasites-of-stray-cats-in-azarshahr-east-azerbaijan-province-iran
#19
Nasser Hajipour, Aabbas Imani Baran, Mohammad Yakhchali, Seyed Mehdi Banan Khojasteh, Farzam Sheikhzade Hesari, Bijan Esmaeilnejad, Jafar Arjmand
Gastrointestinal parasites are among the most common parasitic infections found in stray cats, which might act potential helminthic parasites to domestic cats. The objective of this study was to determine the prevalence of gastrointestinal parasites in stray cats in the city of Azarshahr, which is located in East Azerbaijan province, Iran. A cross-sectional study was conducted on 50 necropsied stray cats, trapped and collected from different geographic regions of Azarshahr. From a total 50 stray cats examined, 15 (30 %) were female and 35 (70 %) were male...
December 2016: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/27810261/effect-of-paecilomyces-lilacinus-trichoderma-harzianum-and-trichoderma-virens-fungal-extracts-on-the-hatchability-of-ancylostoma-eggs
#20
Bianca Delgado Menezes Hofstätter, Anelise Oliveira da Silva Fonseca, Fernando de Souza Maia Filho, Julia de Souza Silveira, Beatriz Maroneze Persici, Luciana Pötter, Andressa Silveira, Zaida Inês Antoniolli, Daniela Isabel Brayer Pereira
BACKGROUND: Ancylostoma species have demanded attention due to their zoonotic potential. The use of anthelmintics is the usual method to prevent environmental contamination by Ancylostoma eggs and larvae. Nematophagous fungi have been widely used in their biological control due to the fungus ability to capture and digest free nematode forms. AIMS: The aim of this study was to evaluate the effect of four different fungal extracts of Paecilomyces lilacinus (n=2), Trichoderma harzianum (n=1) and Trichoderma virens (n=1) isolates on the hatchability of Ancylostoma eggs...
October 31, 2016: Revista Iberoamericana de Micología
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