keyword
MENU ▼
Read by QxMD icon Read
search

host-parasite

keyword
https://www.readbyqxmd.com/read/28727769/small-subunit-ribosomal-metabarcoding-reveals-extraordinary-trypanosomatid-diversity-in-brazilian-bats
#1
Maria Augusta Dario, Ricardo Moratelli Mendonça da Rocha, Philipp Schwabl, Ana Maria Jansen, Martin S Llewellyn
BACKGROUND: Bats are a highly successful, globally dispersed order of mammals that occupy a wide array of ecological niches. They are also intensely parasitized and implicated in multiple viral, bacterial and parasitic zoonosis. Trypanosomes are thought to be especially abundant and diverse in bats. In this study, we used 18S ribosomal RNA metabarcoding to probe bat trypanosome diversity in unprecedented detail. METHODOLOGY/PRINCIPAL FINDINGS: Total DNA was extracted from the blood of 90 bat individuals (17 species) captured along Atlantic Forest fragments of Espírito Santo state, southeast Brazil...
July 20, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28718884/dispersal-host-genotype-and-environment-shape-the-spatial-dynamics-of-a-parasite-in-the-wild
#2
Adam Ekholm, Tomas Roslin, Pertti Pulkkinen, Ayco Jm Tack
Dispersal, environment and genetic variation may all play a role in shaping host-parasite dynamics. Yet, in natural systems, their relative importance remains unresolved. Here, we do so for the epidemiology of a specialist parasite (Erysiphe alphitoides) on the pedunculate oak (Quercus robur). For this purpose, we combine evidence from a multi-year field survey and two dispersal experiments, all conducted at the landscape scale. Patterns detected in the field survey suggest that the parasite is structured as a metapopulation, with trees in denser oak stands characterized by higher parasite occupancy, higher colonization rates and lower extinction rates...
July 18, 2017: Ecology
https://www.readbyqxmd.com/read/28715423/antibody-trapping-a-novel-mechanism-of-parasite-immune-evasion-by-the-trematode-echinostoma-caproni
#3
Alba Cortés, Javier Sotillo, Carla Muñoz-Antolí, Javier Molina-Durán, J Guillermo Esteban, Rafael Toledo
BACKGROUND: Helminth infections are among the most prevalent neglected tropical diseases, causing an enormous impact in global health and the socioeconomic growth of developing countries. In this context, the study of helminth biology, with emphasis on host-parasite interactions, appears as a promising approach for developing new tools to prevent and control these infections. METHODS/PRINCIPAL FINDINGS: The role that antibody responses have on helminth infections is still not well understood...
July 17, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28714591/experimental-evolution-with-a-multicellular-host-causes-diversification-within-and-between-microbial-parasite-populations-differences-in-emerging-phenotypes-of-two-different-parasite-strains
#4
Michaela H Kloesener, Joy Bose, Rebecca D Schulte
Host-parasite coevolution is predicted to have complex evolutionary consequences, potentially leading to the emergence of genetic and phenotypic diversity for both antagonists. However, little is known about variation in phenotypic responses to coevolution between different parasite strains exposed to the same experimental conditions. We infected Caenorhabditis elegans with one of two strains of Bacillus thuringiensis and either allowed the host and the parasite to experimentally coevolve (coevolution treatment) or allowed only the parasite to adapt to the host (one-sided parasite adaptation)...
July 17, 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/28711426/chewing-lice-from-wild-birds-in-northern-greece
#5
Anastasia Diakou, José Bernardo Pedroso Couto Soares, Haralambos Alivizatos, Maria Panagiotopoulou, Savas Kazantzidis, Ivan Literák, Oldřich Sychra
Greece represents an important area for wild birds due to its geographical position and habitat diversity. Although the bird species in Greece are well recorded, the information about the chewing lice that infest them is practically non-existent. Thus, the aim of the present study was to record the species of lice infesting wild birds in northern Greece and furthermore, to associate the infestation prevalence with factors such as the age, sex, migration and social behaviour of the host as well as the time of the year...
July 12, 2017: Parasitology International
https://www.readbyqxmd.com/read/28706242/draft-whole-genome-sequence-of-groundnut-stem-rot-fungus-athelia-rolfsii-revealing-genetic-architect-of-its-pathogenicity-and-virulence
#6
M A Iquebal, Rukam S Tomar, M V Parakhia, Deepak Singla, Sarika Jaiswal, V M Rathod, S M Padhiyar, Neeraj Kumar, Anil Rai, Dinesh Kumar
Groundnut (Arachis hypogaea L.) is an important oil seed crop having major biotic constraint in production due to stem rot disease caused by fungus, Athelia rolfsii causing 25-80% loss in productivity. As chemical and biological combating strategies of this fungus are not very effective, thus genome sequencing can reveal virulence and pathogenicity related genes for better understanding of the host-parasite interaction. We report draft assembly of Athelia rolfsii genome of ~73 Mb having 8919 contigs. Annotation analysis revealed 16830 genes which are involved in fungicide resistance, virulence and pathogenicity along with putative effector and lethal genes...
July 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28702802/morphological-ultrastructural-and-molecular-characterization-of-intestinal-tetratrichomonads-isolated-from-non-human-primates-in-southeastern-brazil
#7
Caroline Spitz Dos Santos, Vera Lúcia Teixeira de Jesus, Douglas McIntosh, Caroline Cunha Carreiro, Lilian Cristina Oliveira Batista, Bruno do Bomfim Lopes, Daniel Marchesi Neves, Carlos Wilson Gomes Lopes
Non-human primates are our closest relatives and represent an interesting model for comparative parasitological studies. However, research on this topic particularly in relation to intestinal parasites has been fragmentary and limited mainly to animals held in captivity. Thus, our knowledge of host-parasite relationships in this species-rich group of mammals could be considered rudimentary. The current study combined morphological, ultrastructural, and molecular analyses to characterize isolates of intestinal tetratrichomonads recovered from the feces of three species of South American, non-human primates...
July 13, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28701240/modelling-the-influence-of-host-community-composition-in-a-sylvatic-trypanosoma-cruzi-system
#8
Diana Erazo, Juan Cordovez, Carolina Cabrera, Jose E Calzada, Azael Saldaña, Nicole L Gottdenker
Species composition of wild reservoir hosts can influence the transmission and maintenance of multi-host vector borne pathogens. The 'pace of life' hypothesis proposes that the life history strategy of reservoir hosts can influence pathogen transmission of vector borne generalist pathogens. We use empirical data to parameterize a mathematical model that investigates the impacts of host life history traits on vector transmission dynamics of the vector-borne multi-host parasite Trypanosoma cruzi in habitats characterized by different degrees of deforestation and varying host community structure...
July 13, 2017: Parasitology
https://www.readbyqxmd.com/read/28700000/ticks-infesting-captive-and-free-roaming-wild-animal-species-at-the-s%C3%A3-o-paulo-zoo-s%C3%A3-o-paulo-brazil
#9
Irys Hany Lima Gonzalez, Marcelo Bahia Labruna, Carolina Romeiro Fernandes Chagas, Paula Andrea Borges Salgado, Cauê Monticelli, Luan Henrique Morais, Amanda Alves de Moraes, Thatiane Cristina Antunes, Patrícia Locosque Ramos, Thiago Fernandes Martins
Ticks are ectoparasites of worldwide distribution that affect vertebrates and can transmit pathogens to animals and humans. The Zoological Park Foundation of São Paulo (FPZSP) is located in a Conservation Unit in one of the most important remaining fragments of the Atlantic Rainforest biome in the suburbs of São Paulo, Brazil. The FPZSP houses more than 3,000 wild animals on exhibit, in breeding programs and in environmental education programs, and also attracts migratory birds and free-roaming wildlife. This study focused on identifying the diversity of tick species that infest captive and free-roaming animals at the FPZSP...
July 10, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/28683136/generality-of-toxins-in-defensive-symbiosis-ribosome-inactivating-proteins-and-defense-against-parasitic-wasps-in-drosophila
#10
Matthew J Ballinger, Steve J Perlman
While it has become increasingly clear that multicellular organisms often harbor microbial symbionts that protect their hosts against natural enemies, the mechanistic underpinnings underlying most defensive symbioses are largely unknown. Spiroplasma bacteria are widespread associates of terrestrial arthropods, and include strains that protect diverse Drosophila flies against parasitic wasps and nematodes. Recent work implicated a ribosome-inactivating protein (RIP) encoded by Spiroplasma, and related to Shiga-like toxins in enterohemorrhagic Escherichia coli, in defense against a virulent parasitic nematode in the woodland fly, Drosophila neotestacea...
July 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28678878/the-bigger-the-better-volume-measurements-of-parasites-and-hosts-parasitic-barnacles-cirripedia-rhizocephala-and-their-decapod-hosts
#11
Christina Nagler, Marie K Hörnig, Joachim T Haug, Christoph Noever, Jens T Høeg, Henrik Glenner
Rhizocephala, a group of parasitic castrators of other crustaceans, shows remarkable morphological adaptations to their lifestyle. The adult female parasite consists of a body that can be differentiated into two distinct regions: a sac-like structure containing the reproductive organs (the externa), and a trophic, root like system situated inside the hosts body (the interna). Parasitism results in the castration of their hosts, achieved by absorbing the entire reproductive energy of the host. Thus, the ratio of the host and parasite sizes is crucial for the understanding of the parasite's energetic cost...
2017: PloS One
https://www.readbyqxmd.com/read/28677044/ren%C3%A3-dubos-tuberculosis-and-the-ecological-facets-of-virulence
#12
Mark Honigsbaum
Reflecting on his scientific career toward the end of his life, the French-educated medical researcher René Dubos presented his flowering as an ecological thinker as a story of linear progression-the inevitable product of the intellectual seeds planted in his youth. But how much store should we set by Dubos's account of his ecological journey? Resisting retrospective biographical readings, this paper seeks to relate the development of Dubos's ecological ideas to his experimental practices and his career as a laboratory researcher...
September 2017: History and Philosophy of the Life Sciences
https://www.readbyqxmd.com/read/28664982/host-specific-associations-affect-the-microbiome-of-philornis-downsi-an-introduced-parasite-to-the-gal%C3%A3-pagos-islands
#13
Michael Ben-Yosef, Doron S Y Zaada, Rachael Y Dudaniec, Zohar Pasternak, Edouard Jurkevitch, Renee J Smith, Charlotte E Causton, M Piedad Lincango, Shanan S Tobe, James G Mitchell, Sonia Kleindorfer, Boaz Yuval
The composition and diversity of bacteria forming the microbiome of parasitic organisms have implications for differential host pathogenicity and host-parasite co-evolutionary interactions. The microbiome of pathogens can therefore have consequences that are relevant for managing disease prevalence and impact in affected hosts. Here we investigate the microbiome of an invasive parasitic fly Philornis downsi, recently introduced to the Galápagos Islands, where it poses extinction threat to Darwin's finches and other land birds...
June 30, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28662048/capacity-of-blood-plasma-is-higher-in-birds-breeding-in-radioactively-contaminated-areas
#14
Magdalena Ruiz-Rodríguez, Anders P Møller, Timothy A Mousseau, Juan J Soler
BACKGROUND: Environmental pollution in general, and radioactive contamination in particular, may deeply affect host-parasite relationships and their consequences for the evolution of organisms. The nuclear accident that occurred more than 30 years ago in Chernobyl resulted in significant changes in diversity and richness of microbial communities that could influence characteristics of animal-bacteria interactions, including host immune responses and competitive interference by bacteria...
2017: PloS One
https://www.readbyqxmd.com/read/28660518/parasites-and-pollution-the-effectiveness-of-tiny-organisms-in-assessing-the-quality-of-aquatic-ecosystems-with-a-focus-on-africa
#15
Beric Michael Gilbert, Annemariè Avenant-Oldewage
The aquatic environment represents the final repository for many human-generated pollutants associated with anthropogenic activities. The quality of natural freshwater systems is easily disrupted by the introduction of pollutants from urban, industrial and agricultural processes. To assess the extent of chemical perturbation and associated environmental degradation, physico-chemical parameters have been monitored in conjunction with biota in numerous biological monitoring protocols. Most studies incorporating organisms into such approaches have focussed on fish and macroinvertebrates...
June 28, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28660174/parasite-carbohydrate-vaccines
#16
REVIEW
Jonnel A Jaurigue, Peter H Seeberger
Vaccination is an efficient means of combating infectious disease burden globally. However, routine vaccines for the world's major human parasitic diseases do not yet exist. Vaccines based on carbohydrate antigens are a viable option for parasite vaccine development, given the proven success of carbohydrate vaccines to combat bacterial infections. We will review the key components of carbohydrate vaccines that have remained largely consistent since their inception, and the success of bacterial carbohydrate vaccines...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28655368/host-mating-system-and-coevolutionary-dynamics-shape-the-evolution-of-parasite-avoidance-in-caenorhabditis-elegans-host-populations
#17
McKenna J Penley, Levi T Morran
Hosts exhibit a variety of defence mechanisms against parasites, including avoidance. Both host-parasite coevolutionary dynamics and the host mating system can alter the evolutionary trajectories of populations. Does the nature of host-parasite interactions and the host mating system affect the mechanisms that evolve to confer host defence? In a previous experimental evolution study, mixed mating and obligately outcrossing Caenorhabditis elegans host populations adapted to either coevolving or static Serratia marcescens parasite populations...
June 28, 2017: Parasitology
https://www.readbyqxmd.com/read/28655315/comparison-of-apoptosis-in-human-primary-pulmonary-endothelial-cells-and-a-brain-microvascular-endothelial-cell-line-co-cultured-with-plasmodium-falciparum-field-isolates
#18
Jean Claude Biteghe Bi Essone, Nadine N'Dilimabaka, Julien Ondzaga, Jean Bernard Lekana-Douki, Dieudonné Nkoghe Mba, Philippe Deloron, Dominique Mazier, Frédrérick Gay, Fousseyni S Touré Ndouo
BACKGROUND: Plasmodium falciparum infection can progress unpredictably to severe forms including respiratory distress and cerebral malaria. The mechanisms underlying the variable natural course of malaria remain elusive. METHODS: The cerebral microvascular endothelial cells-D3 and lung endothelial cells both from human were cultured separately and challenged with P. falciparum field isolates taken directly from malaria patients or 3D7 strain (in vitro maintained culture)...
June 27, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28648374/cryptic-invasions-a-review
#19
REVIEW
Pedro Morais, Martin Reichard
Cryptic invasions are defined as the introduction and spread of non-native lineages within the species' native range (intra-specific cryptic invasion) or the invasion of non-native species that goes unnoticed due to misidentification as a native or another invasive species (inter-specific cryptic invasion). While population-specific attributes are acknowledged to play a critical role in the success and impact of biological invasions in general, our knowledge of the causes and consequences of cryptic invasions is largely neglected...
June 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28637526/hiding-in-the-swamp-new-capillariid-nematode-parasitizing-new-zealand-brown-mudfish
#20
F Jorge, R S A White, R A Paterson
The extent of New Zealand's freshwater fish-parasite diversity has yet to be fully revealed, with host-parasite relationships still to be described from nearly half the known fish community. While advances in the number of fish species examined and parasite taxa described are being made, some parasite groups, such as nematodes, remain poorly understood. In the present study we combined morphological and molecular analyses to characterize a capillariid nematode found infecting the swim bladder of the brown mudfish Neochanna apoda, an endemic New Zealand fish from peat-swamp-forests...
June 22, 2017: Journal of Helminthology
keyword
keyword
12556
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"