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https://www.readbyqxmd.com/read/28807295/anthelmintic-effects-of-forage-chicory-cichorium-intybus-against-free-living-and-parasitic-stages-of-cooperia-oncophora
#1
Miguel Peña-Espinoza, Andrew R Williams, Stig M Thamsborg, Henrik T Simonsen, Heidi L Enemark
Chicory shows great promise as an anthelmintic forage for grazing ruminants that can reduce reliance on anti-parasitic drugs. Recently, we reported potent anthelmintic effects of chicory-based diets in infected cattle with significant reductions in worm burdens of the abomasal nematode Ostertagia ostertagi, whilst no apparent activity was observed against the small intestinal parasite Cooperia oncophora. To explore this discrepancy, we investigated direct anthelmintic effects of forage chicory against C. oncophora in vitro...
August 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28807293/sarcocystis-neurona-and-neospora-caninum-in-brazilian-opossums-didelphis-spp-molecular-investigation-and-in-vitro-isolation-of-sarcocystis-spp
#2
Leane S Q Gondim, Rogério F Jesus, Müller Ribeiro-Andrade, Jean C R Silva, Daniel B Siqueira, Maria F V Marvulo, Felipe M Aléssio, Jean-François Mauffrey, Fred S Julião, Elisa San Martin Mouriz Savani, Rodrigo M Soares, Luís F P Gondim
Sarcocystis neurona and Neospora spp. are protozoan parasites that induce neurological diseases in horses and other animal species. Opossums (Didelphis albiventris and Didelphis virginiana) are definitive hosts of S. neurona, which is the major cause of equine protozoal myeloencephalitis (EPM). Neospora caninum causes abortion in cattle and infects a wide range of animal species, while N. hughesi is known to induce neurologic disease in equids. The aims of this study were to investigate S. neurona and N. caninum in tissues from opossums in the northeastern Brazil, and to isolate Brazilian strains of Sarcocystis spp...
August 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28802865/interleukin-13-interleukin-4-receptor-pathway-is-crucial-for-production-of-sd-a-sialomucin-in-mouse-small-intestinal-mucosa-by-nippostrongylus-brasiliensis-infection
#3
Daigo Tsubokawa, Kenji Ishiwata, Yukinobu Goso, Takeshi Nakamura, Takeshi Hatta, Kazuhiko Ishihara, Hirotaka Kanuka, Naotoshi Tsuji
Mucin is a major component of mucus in gastrointestinal mucosa. Increase of specific sialomucins having Sd(a) blood group antigen, NeuAcα2-3(GalNAcβ1-4)Galβ1-4GlcNAcβ-, is considered to be associated with expulsion of the parasitic intestinal nematode Nippostrongylus brasiliensis. In this study, we examined the relationship between interleukin (IL)-13 pathway and expression of Sd(a)-sialomucins in small intestinal mucosa with N. brasiliensis infection. Nematode infection induced marked increases in small intestinal mucins that reacted with anti-Sd(a) antibody in wild type (wt) mice...
August 9, 2017: Parasitology International
https://www.readbyqxmd.com/read/28799088/metazoan-parasites-from-odontocetes-off-new-zealand-new-records
#4
Kristina Lehnert, Haseeb Randhawa, Robert Poulin
Information about the parasite fauna of spectacled porpoises and cetaceans from New Zealand waters in general is scarce. This study takes advantage of material archived in collections of the Otago Museum in Dunedin and Massey University in Auckland, sampled from cetacean species found stranded along the New Zealand coastline between 2007 and 2014. Parasites from seven species of cetaceans (spectacled porpoise, Phocoena dioptrica (n = 2 individuals examined); pygmy sperm whale (n = 1); long-finned pilot whale, Globicephala melas (n = 1); Risso's dolphin, Grampus griseus (n = 1); short-beaked common dolphin, Delphinus delphis (n = 7); striped dolphin, Stenella coeruleoalba (n = 3) and dusky dolphin, Lagenorhynchus obscurus (n = 2)) from the respiratory and gastro-intestinal tract, cranial sinus, liver, urogenital and mammary tract, fascia and blubber were investigated...
August 10, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28797791/the-use-of-nemabiome-metabarcoding-to-explore-gastro-intestinal-nematode-species-diversity-and-anthelmintic-treatment-effectiveness-in-beef-calves
#5
Russell W Avramenko, Elizabeth M Redman, Roy Lewis, Murilo A Bichuette, Bruna M Palmeira, Thomas A Yazwinski, John S Gilleard
Next-generation deep amplicon sequencing, or metabarcoding, has revolutionized the study of microbial communities in humans, animals and the environment. However, such approaches have yet to be applied to parasitic helminth communities. We recently described the first example of such a method - nemabiome sequencing - based on deep-amplicon sequencing of internal transcribed spacer 2 (ITS-2) rDNA, and validated its ability to quantitatively assess the species composition of cattle gastro-intestinal nematode (GIN) communities...
August 7, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/28794984/seasonality-richness-and-prevalence-of-intestinal-parasites-of-three-neotropical-primates-alouatta-seniculus-ateles-hybridus-and-cebus-versicolor-in-a-fragmented-forest-in-colombia
#6
Silvia Rondón, Mario Ortiz, Cielo León, Nelson Galvis, Andrés Link, Camila González
Studies on parasites infecting non-human primates are essential to better understand the potential threat to humans of zoonoses transmission, particularly under the current processes of pervasive land use change and biodiversity loss. The natural ecosystems in the Middle Magdalena river basin in Colombia have suffered a dramatic reduction and transformation into pastures and agroindustrial monocultures, threatening their biodiversity, and probably affecting the dynamics between parasites and their hosts, as well as altering the disease transmission cycles between wild populations and humans...
December 2017: International Journal for Parasitology. Parasites and Wildlife
https://www.readbyqxmd.com/read/28793307/larrea-tridentata-a-novel-source-for-anti-parasitic-agents-active-against-entamoeba-histolytica-giardia-lamblia-and-naegleria-fowleri
#7
Bharat Bashyal, Linfeng Li, Trpta Bains, Anjan Debnath, Daniel V LaBarbera
Protozoan parasites infect and kill millions of people worldwide every year, particularly in developing countries where access to clean fresh water is limited. Among the most common are intestinal parasites, including Giardia lamblia and Entamoeba histolytica. These parasites wreak havoc on the epithelium lining the small intestines (G. lamblia) and colon (E. histolytica) causing giardiasis and amebiasis, respectively. In addition, there are less common but far more deadly pathogens such as Naegleria fowleri that thrive in warm waters and infect the central nervous systems of their victims via the nasal passages...
August 9, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28793025/environmental-aspects-related-to-tuberculosis-and-intestinal-parasites-in-a-low-income-community-of-the-brazilian-amazon
#8
Biatriz Araújo Cardoso, Fabio de Oliveira Fonseca, Antonio Henrique Almeida de Moraes, Ana Caroline Guedes Souza Martins, Nissa Vilhena da Silva Oliveira, Luana Nepomuceno Gondim Costa Lima, George Alberto da Silva Dias, Maria Helena Féres Saad
We carried out a cross-sectional study from January to December 2015 on 1,425 inhabitants from a floating population in the Brazilian Amazon (Murinin district, Pará State) to describe the population-based prevalence of tuberculosis (TB) from 2011 to 2014, recent TB contacts (rCts) latently infected with Mycobacterium tuberculosis (LTBI) , the coverage of the local health network, socio-environmental factors, and frequency of intestinal parasitic infection (IPI). We found that the sanitary structure was inadequate, with latrines being shared with other rooms within the same accommodation; well water was the main source of water, and 48% of families had low incomes...
August 7, 2017: Revista do Instituto de Medicina Tropical de São Paulo
https://www.readbyqxmd.com/read/28793024/socioenvironmental-conditions-and-intestinal-parasitic-infections-in-brazilian-urban-slums-a-cross-sectional-study
#9
Caroline Ferraz Ignacio, Milena Enderson Chagas da Silva, Natasha Berendonk Handam, Maria de Fatima Leal Alencar, Adriana Sotero-Martins, Martha Macedo de Lima Barata, Antonio Henrique Almeida de Moraes
Methods: A cross-sectional study covering an agglomeration of urban slums was conducted between 2015 and 2016 using participants observation, a socioeconomic survey, and the spontaneous sedimentation method with three slides per sample to analyze fresh stool specimens ( n =595) searching for intestinal parasites. Results: Endolimax nana ( n =95, 16.0%) and Entamoeba coli ( n =65, 10.9%) were the most frequently identified agents, followed by Giardia intestinalis ( n =24, 4...
August 7, 2017: Revista do Instituto de Medicina Tropical de São Paulo
https://www.readbyqxmd.com/read/28791259/toxoplasma-co-infection-prevents-th2-differentiation-and-leads-to-a-helminth-specific-th1-response
#10
Norus Ahmed, Timothy French, Sebastian Rausch, Anja Kühl, Katrin Hemminger, Ildiko R Dunay, Svenja Steinfelder, Susanne Hartmann
Nematode infections, in particular gastrointestinal nematodes, are widespread and co-infections with other parasites and pathogens are frequently encountered in humans and animals. To decipher the immunological effects of a widespread protozoan infection on the anti-helminth immune response we studied a co-infection with the enteric nematode Heligmosomoides polygyrus in mice previously infected with Toxoplasma gondii. Protective immune responses against nematodes are dependent on parasite-specific Th2 responses associated with IL-4, IL-5, IL-13, IgE, and IgG1 antibodies...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28783438/sarcocystis-strixi-n-sp-from-a-barred-owl-strix-varia-definitive-host-and-interferon-gamma-gene-knockout-mice-as-experimental-intermediate-host
#11
Shiv Verma, Alexa Rosypal, Jospeph Mowery, David Scott, Camila Cezar, Benjamin M Rosenthal, J P Dubey, David Lindsay
Here we report a new species of Sarcocystis with Barred owls as the natural definitive host and interferon gamma gene knockout (KO) mice as an experimental intermediate host. A Barred owl submitted to the Carolina Raptor Center, Huntersville, North Carolina, was euthanized because of paralysis. Fully sporulated 12.5 x 9.9 m sporocysts were found in intestinal scrapings from the owl. Sporocysts from the Barred owl were orally fed to 4 laboratories reared outbred Swiss Webster (SW) (Mus musculus) and 8 KO mice...
August 7, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28776895/characterization-of-sarcocystis-fayeri-s-actin-depolymerizing-factor-as-a-toxin-that-causes-diarrhea
#12
Daisuke Irikura, Morihiro Saito, Yoshiko Sugita-Konishi, Takahiro Ohnishi, Kei-Ichi Sugiyama, Maiko Watanabe, Akiko Yamazaki, Shinji Izumiyama, Hirotaka Sato, Yusuke Kimura, Rie Doi, Yoichi Kamata
Raw horsemeat has the potential to induce food poisoning which often presents with diarrheal symptoms. A sample of horsemeat was found to be infected with Sarcocystis fayeri, and a 15-kDa protein isolated from the cysts of S. fayeri was found to clearly show its diarrhea-inducing activity. A nested polymerase chain reaction was used to clone the cDNA of the 15-kDa protein. The deduced amino acid sequence showed homology to actin-depolymerizing factor (ADF). A recombinant 15-kDa protein depolymerized prepolymerized actins in a test tube...
August 4, 2017: Genes to Cells: Devoted to Molecular & Cellular Mechanisms
https://www.readbyqxmd.com/read/28770921/insights-into-the-giardia-intestinalis-enolase-and-human-plasminogen-interaction
#13
R Aguayo-Ortiz, P Meza-Cervantez, R Castillo, A Hernández-Campos, L Dominguez, L Yépez-Mulia
Giardia intestinalis is an intestinal parasite that causes diarrhea in humans and animals worldwide. The enolase of G. intestinalis (GiENO) participates in its glycolysis pathway and is abundantly expressed in the parasite cytosol; however, its localization on the surface of trophozoites and cysts has been demonstrated. Enolases from bacteria and parasites can have different functions and are considered moonlighting proteins, for example, as a cell surface plasminogen receptor. In relation to GiENO, no studies have been performed about its possible participation as a plasminogen receptor...
August 3, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28770713/detection-and-multilocus-genotyping-of-giardia-duodenalis-in-dogs-in-sichuan-province-china
#14
Yue Zhang, Zhijun Zhong, Lei Deng, Maoqing Wang, Wei Li, Chao Gong, Hualin Fu, Suizhong Cao, Xianpeng Shi, Kongju Wu, Guangneng Peng
Giardia duodenalis (also known as G. intestinalis) is a flagellated protozoan that parasitizes the small intestine and is a common causal agent of zoonotic infections in humans and animals. To assess the genetic diversity and zoonotic transmission potential of G. duodenalis in stray dogs, 159 fecal specimens were collected from dogs in Chengdu, Yaan, and Leshan in Sichuan province, China. Of the 159 fecal samples from stray dogs, 18 (11.3%) were G. duodenalis-positive based on nested PCR amplification of the beta giardin (bg) gene, and the occurrence varied from 1...
2017: Parasite: Journal de la Société Française de Parasitologie
https://www.readbyqxmd.com/read/28764744/a-case-study-of-desmozoon-lepeophtherii-infection-in-farmed-atlantic-salmon-associated-with-gill-disease-peritonitis-intestinal-infection-stunted-growth-and-increased-mortality
#15
Simon Chioma Weli, Ole Bendik Dale, Haakon Hansen, Mona Cecilie Gjessing, Liv Birte Rønneberg, Knut Falk
BACKGROUND: In September 2008, a disease outbreak characterized by acute, severe gill pathology and peritonitis, involving the gastrointestinal tract, was observed in an Atlantic salmon (Salmo salar L.) farm in north-western Norway. During subsequent sampling in November 2008 and January 2009, chronic proliferative gill inflammation and peritonitis was observed. Cumulative mortalities of 5.6-12.8% and severe growth retardation were observed. Routine diagnostic analysis revealed no diseases known to salmon at the time, but microsporidian infection of tissues was observed...
August 2, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28764637/invasive-anisakiasis-by-the-parasite-anisakis-pegreffii-nematoda-anisakidae-diagnosis-by-real-time-pcr-hydrolysis-probe-system-and-immunoblotting-assay
#16
Simonetta Mattiucci, Michela Paoletti, Alessandra Colantoni, Antonella Carbone, Raffaele Gaeta, Agnese Proietti, Stefano Frattaroli, Paolo Fazii, Fabrizio Bruschi, Giuseppe Nascetti
BACKGROUND: Anisakiasis is a fish-borne zoonosis caused by Anisakis spp. larvae. One challenging issue in the diagnosis of anisakiasis is the molecular detection of the etiological agent even at very low quantity, such as in gastric or intestinal biopsy and granulomas. Aims of this study were: 1) to identify three new cases of invasive anisakiasis, by a species-specific Real-time PCR probe assay; 2) to detect immune response of the patients against the pathogen. METHODS: Parasite DNA was extracted from parasites removed in the three patients...
August 1, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28763517/higher-risk-of-gastrointestinal-parasite-infection-at-lower-elevation-suggests-possible-constraints-in-the-distributional-niche-of-alpine-marmots
#17
Stefania Zanet, Giacomo Miglio, Caterina Ferrari, Bruno Bassano, Ezio Ferroglio, Achaz von Hardenberg
Alpine marmots Marmota marmota occupy a narrow altitudinal niche within high elevation alpine environments. For animals living at such high elevations where resources are limited, parasitism represents a potential major cost in life history. Using occupancy models, we tested if marmots living at higher elevation have a reduced risk of being infected with gastro-intestinal helminths, possibly compensating the lower availability of resources (shorter feeding season, longer snow cover and lower temperature) than marmots inhabiting lower elevations...
2017: PloS One
https://www.readbyqxmd.com/read/28761488/intestinal-helminths-in-different-species-of-rodents-in-north-khorasan-province-northeast-of-iran
#18
Kourosh Arzamani, Mitra Salehi, Iraj Mobedi, Amir Adinezade, Hamid Hasanpour, Mohammad Alavinia, Jamshid Darvish, Mohammad Reza Shirzadi, Zeinolabedin Mohammadi
BACKGROUND: Rodents are an important source of zoonotic diseases for human. The aim of this study was to determine the infectivity of rodents with intestinal helminths in North Khorasan Province, Iran. METHODS: One hundred and thirteen rodents were collected using different collection methods such as kill and live traps, digging of their burrow, filling of their hiding places with water and hand net during 2011-2013. Their alimentary canals were removed in the laboratory and helminths were determined in the department of parasitology, Tehran University of Medical Sciences...
April 2017: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28761475/the-helminths-causing-surgical-or-endoscopic-abdominal-intervention-a-review-article
#19
REVIEW
Erdal Uysal, Mehmet Dokur
BACKGROUND: Helminths sometimes require surgical or endoscopic intervention. Helminths may cause acute abdomen, mechanical intestinal obstruction, gastrointestinal hemorrhage, perforation, hepatitis, pancreatitis, and appendicitis. This study aimed to determine the surgical diseases that helminths cause and to gather, analyze the case reports, case series and original articles about this topic in literature. METHODS: This study was designed as a retrospective observational study...
April 2017: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28761470/intraperitoneal-inoculation-an-atypical-route-of-trichinella-spiralis-infection
#20
Peng Jiang, Zi Fang Zhang, Zhong Quan Wang, Ruo Dan Liu, Xi Zhang, Ge Ge Sun, Xin Qi, Li Wang, Jing Cui
BACKGROUND: The intraperitoneal injection is a common method for establishing the experimental animal model infected with parasites. The aim of this study was to investigate if the intraperitoneal injection was another route of Trichinella spiralis infection. METHODS: From June to July 2015, twenty BALB/c mice were intraperitoneally injected with 300 T. spiralis muscle larvae in Department of Parasitology, Medical College, Zhengzhou University, China. The larvae per gr (LPG) muscle from the infected mice and the reproductive capacity index (RCI) of T...
January 2017: Iranian Journal of Parasitology
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