57,341 results match your criteria Nematode Infections

Intestinal Helminth Infections and Associated Risk Factors among School-Aged Children of Bamendjou Community, West Region of Cameroon.

J Parasitol Res 2021 23;2021:6665586. Epub 2021 Apr 23.

Department of Animal Biology, Faculty of Science, University of Dschang, P.O. Box 067, Dschang, Cameroon.

Background: Infection with intestinal nematodes is of major public health concern worldwide, and school-age children and pregnant women are the principal victims. The present study was undertaken to provide baseline information on the status of gastrointestinal nematodes among school-age children in Bamendjou. . Read More

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Anthelmintic resistance of Haemonchus contortus from sheep flocks in Brazil: concordance of in vivo and in vitro (RESISTA-Test©) methods.

Rev Bras Parasitol Vet 2021 3;30(2):e025120. Epub 2021 May 3.

Embrapa Pecuária Sudeste - CPPSE, São Carlos, SP, Brasil.

This study evaluated the resistance status of Haemonchus contortus from sheep flocks in the state of São Paulo, Brazil, through comparison between the fecal egg count reduction test (FECRT) and the larval development test (LDT). For the FECRT, 35 sheep were selected in each of five flocks and divided into groups treated with: benzimidazole, levamisole, ivermectin, monepantel and control. Feces were collected for EPG and fecal cultures. Read More

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Endoparasite prevalence and infection risk factors among cats in an animal shelter in Estonia.

Folia Parasitol (Praha) 2021 Apr 20;68. Epub 2021 Apr 20.

Department of Zoology, Institute of Ecology and Earth Sciences, University of Tartu, Estonia.

Cats are important hosts for different zoonotic parasites that can be hazardous to human health. To date, few studies have attempted to identify the factors affecting parasitic infections in shelter animals. This study aims to analyse the presence of endoparasites in shelter cats in Tartu, Estonia, and identify factors affecting endoparasite prevalence and intensity. Read More

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Genome-wide insights on gastrointestinal nematode resistance in autochthonous Tunisian sheep.

Sci Rep 2021 Apr 29;11(1):9250. Epub 2021 Apr 29.

Small Ruminant Genomics, International Centre for Agricultural Research in the Dry Areas (ICARDA), Addis Ababa, Ethiopia.

Gastrointestinal nematode (GIN) infections have negative impacts on animal health, welfare and production. Information from molecular studies can highlight the underlying genetic mechanisms that enhance host resistance to GIN. However, such information often lacks for traditionally managed indigenous livestock. Read More

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Differentially Expressed Gene Patterns in Ascarid-Infected Chickens of Higher- or Lower-Performing Genotypes.

Animals (Basel) 2021 Apr 2;11(4). Epub 2021 Apr 2.

Institute of Nutritional Physiology 'Oskar Kellner', Leibniz Institute for Farm Animal Biology, 18196 Dummerstorf, Germany.

Here, we describe the first transcriptomic investigation of the peripheral blood of chickens exposed to and infections. We investigated differentially expressed gene (DEG) patterns in two chicken genotypes with either a higher (Lohmann Brown Plus, LB) or lower (Lohmann Dual, LD) laying performance level. The hens were experimentally coinfected with and , and their worm burdens and infection parameters were determined six weeks post infection. Read More

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INTERGROWTH-21 Identifies High Prevalence of Low Symphysis-Fundal Height in Indigenous Pregnant Women Experiencing Multiple Infections, Nutrient Deficiencies, and Inflammation: The Maternal Infections, Nutrient Deficiencies, and Inflammation (MINDI) Cohort.

Curr Dev Nutr 2021 Apr 12;5(4):nzab012. Epub 2021 Apr 12.

School of Human Nutrition, McGill University (Macdonald Campus), Ste-Anne-de-Bellevue, Quebec, Canada.

Background: In the absence of ultrasound, symphysis-fundal height (SFH) can assess maternal-fetal well-being as it is associated with gestational age, fetal weight, and amniotic fluid volume. However, other modifiers of SFH, including maternal infections, nutrient deficiencies, and inflammation (MINDI), have not been widely explored.

Objectives: Our objectives were 2-fold: ) to assess prevalence of low SFH in indigenous Panamanian women using both Pan-American Health Organization (PAHO) and INTERGROWTH-21 standards and ) to explore associations of SFH with maternal health indicators: infections (oral, skin, urogenital, nematode infections), nutrient deficiencies [protein and iron indicators (ferritin, serum iron, serum transferrin receptor, hepcidin), folate, and vitamins A, D, and B-12], and inflammation [leukocytes, C-reactive protein (CRP), cytokines]. Read More

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Mutual adaptations between hosts and parasites determine stress levels in eels.

K I Honka B Sures

Int J Parasitol Parasites Wildl 2021 Apr 20;14:179-184. Epub 2021 Feb 20.

Aquatic Ecology, University of Duisburg-Essen, D-45141, Universitätsstr. 5, Germany.

Invasive parasites may severely affect their new hosts. Two invasive parasites occurring in the European eel () are the Asian swim bladder nematode and the Ponto-caspian acanthocephalan sp., which were introduced to the river Rhine in the early 1980/90s. Read More

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Virulence of clinically relevant multidrug resistant Corynebacterium striatum strains and their ability to adhere to human epithelial cells and inert surfaces.

Microb Pathog 2021 Apr 21;155:104887. Epub 2021 Apr 21.

BIOMEDAGE Group. Faculty of Medicine. Cantabria University, Santander, Spain; Instituto de Investigación Valdecilla (IDIVAL). Santander, Spain.

Corynebacterium striatum is a nosocomial pathogen which is increasingly associated with serious infections in both immunocompetent and immunocompromised patients. However, little is known about virulence factors and mechanisms that may enhance the establishment and long-term survival of Corynebacterium striatum. in the hospital environment. Read More

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First report of molecular and phylogenetic analysis of Physaloptera praeputialis in naturally infected stray cats from India.

Parasitol Res 2021 Apr 24. Epub 2021 Apr 24.

Referral Veterinary Diagnostic and Extension Centre, Lala Lajpat Rai University of Veterinary and Animal Sciences, Karnal, Haryana, 132001, India.

Nematodes of the genus Physaloptera are globally distributed and infect a multitude of hosts. Their life cycle involves orthopterans and coleopterans as intermediate hosts. The morphological characters alone are inadequate to detect and differentiate Physaloptera spp. Read More

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Comparison of genetic parameters and estimated breeding values for worm resistance in meat sheep obtained using traditional and genomic models.

Trop Anim Health Prod 2021 Apr 23;53(2):283. Epub 2021 Apr 23.

Department of Animal Science, (CCA), UFPI, Campus Universitário Ministro Petrônio Portella, Teresina, PI, 64049-550, Brazil.

Gastrointestinal nematode infections have caused expressive losses in sheep production worldwide. The improvement of host genetic resistance to worms has been used as a strategy to mitigate this problem. In this sense, the inclusion of genomic information has shown potential to increase the accuracy of prediction of breeding values and speed up selection. Read More

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An inactivated bacterium (paraprobiotic) expressing Cry5B as a therapeutic for and spp. infections in large animals.

One Health 2021 Jun 26;12:100241. Epub 2021 Mar 26.

Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA, United States of America.

and are important parasites in the family Ascarididae, large, ubiquitous intestinal-dwelling nematodes infecting all classes of vertebrates. Parasitic nematode drug resistance in veterinary medicine and drug recalcitrance in human medicine are increasing worldwide, with few if any new therapeutic classes on the horizon. Some of these parasites are zoonotic, , is passed from humans to pigs and . Read More

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Natural variation in Caenorhabditis elegans responses to the anthelmintic emodepside.

Int J Parasitol Drugs Drug Resist 2021 Apr 17;16:1-8. Epub 2021 Apr 17.

Molecular Biosciences, Northwestern University, Evanston, IL, 60208, USA. Electronic address:

Treatment of parasitic nematode infections depends primarily on the use of anthelmintics. However, this drug arsenal is limited, and resistance against most anthelmintics is widespread. Emodepside is a new anthelmintic drug effective against gastrointestinal and filarial nematodes. Read More

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Morphology, development stages, and phylogeny of the (Nematoda: Diplogastridae), a phoront of the bark beetle from the elm Huds. in Northwest Russia.

J Nematol 2021 11;53. Epub 2021 Mar 11.

Plant Pest Diagnostic Center, California Department of Food and Agriculture, 3294 Meadowview Road, Sacramento, CA, 95832.

The nematode was found in galleries, adults, and larvae of , the vector of the Dutch elm disease, in St. Petersburg parks. This nematode co-occurred with , which is another phoretic partner of . Read More

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Performance of lambs under four levels of dietary supplementation and artificially mix-infected with Haemonchus contortus and Trichostrongylus colubriformis.

Rev Bras Parasitol Vet 2021 9;30(1):e025420. Epub 2021 Apr 9.

Instituto de Biociências, Universidade Estadual Paulista - UNESP, Botucatu, SP, Brasil.

The effect of four diets on the performance of Dorper lambs that were artificially mix-infected with 1000 infective larvae (L3) of Haemonchus contortus and 1000 L3 of Trichostrongylus colubriformis every three days for 12 weeks was evaluated. For each diet, one infected group (n = 7) and one control group (n = 4) were set up. The four diets contained the following proportions of hay (H) and concentrate (C): Diet 1 - 100%H; Diet 2 - 75%H:25%C; Diet 3 - 50%H:50%C; Diet 4 - 25%H:75. Read More

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Determinants of lungworm specificity in five cetacean species in the western Mediterranean.

Parasit Vectors 2021 Apr 12;14(1):196. Epub 2021 Apr 12.

Marine Zoology Unit, Cavanilles Institute of Biodiversity and Evolutionary Biology, Science Park, University of Valencia, PO Box 22085, Valencia, 46071, Spain.

Background: Current data about Pseudaliidae show contrasting patterns of host specificity between congeneric species. We investigated how both contact and compatibility between hosts and parasites contributed to the patterns of lungworm infection observed in a community of five species of cetaceans in the western Mediterranean.

Methods: The lungs of 119 striped dolphins Stenella coeruleoalba, 18 bottlenose dolphins Tursiops truncatus, 7 Risso's dolphins Grampus griseus, 7 long-finned pilot whales Globicephala melas, and 6 common dolphins Delphinus delphis were analysed for lungworms. Read More

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Forecasting the timing of N battus eggs hatching.

Richard Hollands

Vet Rec 2021 04;188(7):270

Viewlands, Wenlock Road, Bridgnorth, Shropshire, WV16 5AZ.

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Effect of hookworm infection and anthelmintic treatment on naturally acquired antibody responses against the GMZ2 malaria vaccine candidate and constituent antigens.

BMC Infect Dis 2021 Apr 8;21(1):332. Epub 2021 Apr 8.

Department of Immunology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Legon, Ghana.

Background: Malaria and helminths diseases are co-endemic in most parts of sub-Saharan Africa. Immune responses from each of these pathogens interact, and these interactions may have implications on vaccines. The GMZ2 malaria vaccine candidate is a fusion protein of Plasmodium falciparum merozoite surface protein 3 (MSP3) and glutamate rich protein (GLURP R0). Read More

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J Zoo Wildl Med 2021 Apr;52(1):217-222

Universidad Cardenal Herrera-CEU, CEU Universities, Veterinary Faculty, 46115 Alfara del Patriarca, Valencia, Spain.

Spirurids, specifically the , , , and genera, have been reported to parasitize all nonhuman primate taxa. Spirurid pathogenesis in nonhuman primates has not been reported frequently; however, has been associated with serious gastric pathologies, including gastric perforation. This study was a retrospective study of 38 vervet monkey () necropsies performed in a primate sanctuary that houses captive orphaned or injured wild-born vervet monkeys. Read More

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Rapid Quantum Dot Nanobead-mAb Probe-Based Immunochromatographic Assay for Antibody Monitoring of Infection.

Int J Nanomedicine 2021 29;16:2477-2486. Epub 2021 Mar 29.

Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, People's Republic of China.

Purpose: Sensitive and selective point-of-care biosensor is an urgent pursuit of serological antibody detection to control parasite pathogen. For specific, quantitative and on-site screening of infection in livestock, a quantum dot nanobead-monoclonal antibody (QB-mAb) probe-based immunochromatographic assay (ICA) was developed by introducing a competitive sandwich strategy (QB-CICA).

Methods: In the QB-CICA, QB-mAb probes competed with serum antibody for a particular epitope, followed by immunocomplexes binding to capture antibody on the test line. Read More

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Global and regional prevalence of helminth infection in chickens over time: a systematic review and meta-analysis.

Poult Sci 2021 May 4;100(5):101082. Epub 2021 Mar 4.

Animal Science, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia.

Gastrointestinal helminth parasites are a concern for the poultry industry worldwide as they can affect the health, welfare, and production performance. A systematic review of the prevalence over time in different countries may improve our understanding of gastrointestinal helminthiasis in chickens and subsequently lead to improved poultry health. The aim of this systematic review and meta-analysis was to provide an overview of the published information regarding the epidemiology and the diagnostic approaches of chicken helminth infection. Read More

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Efficacy of a novel topical combination of esafoxolaner, eprinomectin and praziquantel for the prevention of heartworm disease in cats.

Parasite 2021 2;28:30. Epub 2021 Apr 2.

College of Veterinary Medicine, Cornell University, Ithaca, 14850 NY, USA.

NexGard Combo is a novel topical endectoparasiticide formulation for cats combining the insecticide/acaricide esafoxolaner, the nematodicide eprinomectin and the cestodicide praziquantel. The efficacy of this novel formulation for the prevention of heartworm disease in cats was tested in two experimental studies using an induced infection model and a randomized, blinded, placebo-controlled study design, and two USA isolates of Dirofilaria immitis. In each study, 20 naïve cats were each inoculated sub-cutaneously with 100 third-stage larvae of D. Read More

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The effect of pasture molluscicide on small lungworm infections and the productivity of grazing lambs.

Vet Parasitol 2021 Apr 26;292:109395. Epub 2021 Feb 26.

Nossal Institute for Global Health, Melbourne School of Population & Global Health, University of Melbourne, Level 5, 333 Exhibition St, Melbourne, Victoria 3010, Australia.

The aim of this study was to assess the effect of pasture molluscicide treatment on the prevalence and severity of small lungworm infections, and the productivity of lambs grazing improved pastures in southeastern Australia. A randomised control field trial of 260 Merino-cross lambs was conducted on a commercially managed farm in South Australia with a history of high small lungworm prevalence. Separate groups of lambs rotationally grazed irrigated lucerne paddocks treated with iron chelate molluscicide or untreated control paddocks. Read More

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Adaptation of in a Medium Mimicking a Diabetic Foot Environment.

Toxins (Basel) 2021 03 22;13(3). Epub 2021 Mar 22.

Virulence Bactérienne et Infections Chroniques, INSERM U1047, Université de Montpellier, Department of Microbiology and Hospital Hygiene, CHU Nîmes, Univ Montpellier, 30908 Nîmes, France.

is the most prevalent pathogen isolated from diabetic foot infections (DFIs). The purpose of this study was to evaluate its behavior in an in vitro model mimicking the conditions encountered in DFI. Four clinical strains were cultivated for 16 weeks in a specific environment based on the wound-like medium biofilm model. Read More

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Strongyloidiasis Serological Analysis with Three Different Biological Probes and Their Electrochemical Responses in a Screen-Printed Gold Electrode.

Sensors (Basel) 2021 Mar 10;21(6). Epub 2021 Mar 10.

Laboratory of Nanobiotechnology, Institute of Biotechnology, Federal University of Uberlandia, Av. Amazonas s/n Bl. 2E, sl. 248, Uberlândia, MG 38402-022, Brazil.

(1) Background: The validation of biological antigens is the study's utmost goal in biomedical applications. We evaluated three different probes with single and multiple epitopes through electrochemical detection of specific IgG in serum for human strongyloidiasis diagnosis. (2) Methods: Screen-printed gold electrodes were used and probes consisting of two single-epitope synthetic peptides (D3 and C10) with different sequences, and a multi-epitope antigen [detergent phase (DP)-hydrophobic membrane proteins]. Read More

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COVID-19: The Ivermectin African Enigma.

Colomb Med (Cali) 2020 Dec 30;51(4):e2014613. Epub 2020 Dec 30.

Barbara&Frick. Bogotá. Colombia.

Introduction: The low frequency of cases and deaths from the SARS-CoV-2 COVID-19 virus in some countries of Africa has called our attention about the unusual behavior of this disease. The ivermectin is considered a drug of choice for various parasitic and viral diseases and shown to have in vitro effects against SARS-CoV-2.

Aims: Our study aimed to describe SARS-CoV2 infection and death rates in African countries that participated in an intensive Ivermectin mass campaign carried out to control onchocerciasis and compare them with those of countries that did not participate. Read More

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December 2020

Prevalence and risk factors for micronutrient deficiencies during pregnancy in Cayenne, French Guiana.

Food Nutr Res 2021 22;65. Epub 2021 Feb 22.

Centre d'Investigation Clinique, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana.

Background: Involved in physical and brain development, immunity and metabolism, micronutrients have profound health effects. The nutritional status of pregnant women is a major determinant of foetal health. French Guiana has a rapid population growth. Read More

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February 2021

Prevalence and fecal egg load of gastrointestinal parasites of Angora goats in four agro-ecological zones in Lesotho.

Vet World 2021 Feb 5;14(2):339-346. Epub 2021 Feb 5.

Department of Animal Science, National University of Lesotho, P.O. Roma 180, Maseru, Lesotho.

Background And Aim: Goats are reared for their meat, mohair and other socio-cultural needs in Lesotho. Helminth infections are some of the major setbacks in the goat production industry due to their negative impact on animals' health, resulting in significant losses on meat and mohair production and death. A cross-sectional study was conducted to determine the prevalence, fecal egg infestation, and morphological identification of gastrointestinal parasites in goats. Read More

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February 2021

Massive biliary ascariasis: an unusual cause of acute cholangitis.

BMJ Case Rep 2021 Mar 24;14(3). Epub 2021 Mar 24.

Gastroenterology and Hepatology Unit, Division of Internal Medicine, Faculty of Medicine, Prince of Songkla University, Hatyai, Songkhla, Thailand

Acute cholangitis is a condition of bacterial infection following hepatobiliary tract obstruction, which signifies poor prognosis unless adequately drained. The most common cause of bile duct obstruction is choledocholithiasis, in contrast to parasitic infestation, a rare entity causing acute cholangitis nowadays. Therefore, we reported the case of a 68-year-old Thai man who presented with acute fever, intense right upper quadrant abdominal pain and jaundice for 2 days. Read More

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Expression of Ascaris lumbricoides putative virulence-associated genes when infecting a human host.

Parasit Vectors 2021 Mar 23;14(1):176. Epub 2021 Mar 23.

Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Selangor, Malaysia.

Background: Ascaris lumbricoides is the most common causative agent of soil-transmitted helminth infections worldwide, with an estimated 450 million people infected with this nematode globally. It is suggested that helminths are capable of evading and manipulating the host immune system through the release of a spectrum of worm proteins which underpins their long-term survival in the host. We hypothesise that the worm overexpresses these proteins when infecting adults compared to children to cirvumvent the more robust defence mechanisms of adults. Read More

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