Publications by authors named "Toby J Wilkinson"

Article Synopsis
  • Microbiomes, especially the rumen microbiome, present opportunities for biotechnological applications, particularly with antimicrobial peptides (AMPs) that can fight infections.
  • In this study, several AMPs from the rumen were effective against the bacteria Pseudomonas aeruginosa, showing strong antimicrobial activity and the ability to inhibit biofilm formation.
  • The AMPs demonstrated low toxicity to human cells, targeted bacterial membranes, and were successful in an in vivo model, indicating their potential as therapeutic agents for P. aeruginosa infections.
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Parasite derived extracellular vesicles (EVs) have been proposed to play key roles in the establishment and maintenance of infection. is a newly emerging parasite of livestock with many aspects of its underpinning biology yet to be resolved. This research is the first in-depth investigation of EVs released by adult EVs were successfully isolated using both differential centrifugation and size exclusion chromatography (SEC), and morphologically characterized though transmission electron microscopy (TEM).

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Article Synopsis
  • - The study investigates the effectiveness of two methods for isolating extracellular vesicles (EVs) from the helminth pathogen Fasciola hepatica, comparing differential centrifugation (DC) and size exclusion chromatography (SEC).
  • - Results showed that SEC produced EVs that were smaller, purer, and had less contamination from excretory-secretory proteins (ESPs) compared to those purified through DC, which retained more diverse proteins.
  • - The findings indicate that SEC is a superior method for EV purification and suggest it should be the preferred choice for future studies involving EVs to avoid issues with contamination.
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Article Synopsis
  • Understanding rumen plant-microbe interactions can enhance nutrient use efficiency in ruminants, highlighting the importance of this research study.
  • The study examined how bacteria colonize fresh plants over 24 hours, showing significant changes in bacterial populations and plant chemistry during the process with different forages, including perennial ryegrass, bird's foot trefoil, and red clover.
  • Results indicated a clear distinction between primary and secondary colonization phases, with alterations in carbohydrate metabolism and bacterial functions occurring regardless of forage type as time progressed.
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Metataxonomic 16S rDNA based studies are a commonplace and useful tool in the research of the microbiome, but they do not provide the full investigative power of metagenomics and metatranscriptomics for revealing the functional potential of microbial communities. However, the use of metagenomic and metatranscriptomic technologies is hindered by high costs and skills barrier necessary to generate and interpret the data. To address this, a tool for Phylogenetic Investigation of Communities by Reconstruction of Unobserved States (PICRUSt) was developed for inferring the functional potential of an observed microbiome profile, based on 16S data.

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Uncontrolled host immunological reactions directed against tissue-trapped eggs precipitate a potentially lethal, pathological cascade responsible for schistosomiasis. Blocking schistosome egg production, therefore, presents a strategy for simultaneously reducing immunopathology as well as limiting disease transmission in endemic or emerging areas. We recently demonstrated that the ribonucleoside analogue 5-azacytidine (5-AzaC) inhibited Schistosoma mansoni oviposition, egg maturation and ovarian development.

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In the ancient Lake Baikal, Russia, amphipod crustaceans have undergone a spectacular adaptive radiation, resulting in a diverse community of species. A survey of microsporidian parasites inhabiting endemic and non-endemic amphipod host species at the margins of Lake Baikal indicates that the endemic amphipods harbour many microsporidian parasite groups associated with amphipods elsewhere in Eurasia. While these parasites may have undergone a degree of adaptive radiation within the lake, there is little evidence of host specificity.

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Antimicrobial peptides (AMPs) are promising drug candidates to target multi-drug resistant bacteria. The rumen microbiome presents an underexplored resource for the discovery of novel microbial enzymes and metabolites, including AMPs. Using functional screening and computational approaches, we identified 181 potentially novel AMPs from a rumen bacterial metagenome.

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The turkey microbiome is largely understudied, despite its relationship with bird health and growth, and the prevalence of human pathogens such as spp. In this study we investigated the microbiome within the small intestine (SI), caeca (C), large intestine (LI), and cloaca (CL) of turkeys at 6, 10, and 16 weeks of age. Eight turkeys were dissected within each age category and the contents of the SI, C, LI, and CL were harvested.

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Article Synopsis
  • Understanding the relationship between ingested plant material and its associated microbiome is crucial for improving nutrient efficiency in ruminants, with a focus on how bacteria colonize plants over time.
  • The study uses metagenomic shotgun sequencing and mid-infrared spectroscopy to analyze the diversity and function of rumen microbiota at two colonization stages: primary (up to 4 hours) and secondary (after 4 hours).
  • Results indicate that specific bacterial genera dominate the microbiome at both stages, with increased activity in amino acid, carbohydrate, and lipid metabolism during secondary colonization, highlighting changes in plant chemistry that drive these dynamics.
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The liver flukes Fasciola hepatica and F. gigantica infect livestock worldwide and threaten food security with climate change and problematic control measures spreading disease. Fascioliasis is also a foodborne disease with up to 17 million humans infected.

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Fasciolosis is an important foodborne, zoonotic disease of livestock and humans, with global annual health and economic losses estimated at several billion US$. Fasciola hepatica is the major species in temperate regions, while F. gigantica dominates in the tropics.

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Microsporidia of the genus Dictyocoela are parasites of gammarid amphipod Crustacea. They typically exhibit low virulence and efficient vertical transmission and at least some strains are capable of feminising their hosts. Sequencing of a region of the 16S rDNA of Dictyocoela spp.

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Microsporidia of the genus Pleistophora are important parasites of fish and crustacea. Pleistophora mulleri has been described previously as a parasite of the gammarid amphipod crustacean Gammarus duebeni celticus in Irish freshwater habitats. Through a survey of European G.

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