Publications by authors named "Peter D Eckersall"

Background: Studying the effect of dietary Spirulina and lysozyme supplementation on the metabolome and proteome of liver tissue contributes to understanding potential hepatic adaptations of piglets to these novel diets. This study aimed to understand the influence of including 10% Spirulina on the metabolome and proteome of piglet liver tissue. Three groups of 10 post-weaned piglets, housed in pairs, were fed for 28 days with one of three experimental diets: a cereal and soybean meal-based diet (Control), a base diet with 10% Spirulina (SP), and an SP diet supplemented with 0.

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Background: The chicken's inflammatory response is an essential part of the bird's response to infection. A single dose of Escherichia coli (E. coli) lipopolysaccharide (LPS) endotoxin can activate the acute phase response (APR) and lead to the production of acute phase proteins (APPs).

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This study investigated the effects of dietary supplements, citrus (CTS) and cucumber (CMB), on the jejunum and cecum microbiota of 14- and 28-days old broiler chickens to evaluate their impact on the gut health and assess their role as alternatives to antibiotic growth promoters (ABGPs). 16SrRNA gene sequencing revealed the overall bacterial microbiota composition was significantly affected by the gut site (p? View Article and Find Full Text PDF

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  • Dilated cardiomyopathy (iDCM) is a significant disease affecting both dogs and humans, being the second leading cause of heart failure in dogs and can lead to sudden cardiac death.
  • This study compared the plasma metabolome of 12 dogs with iDCM to 8 healthy dogs, utilizing advanced mass-spectrometry techniques to identify 272 metabolites.
  • Findings revealed notable changes in metabolite concentrations (like amino acids and lipids) associated with iDCM, paving the way for better understanding and monitoring of this condition in the future.
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S100 proteins are a group of calcium-binding proteins which received this name because of their solubility in a 100% saturated solution of ammonium sulphate. They have a similar molecular mass of 10-12 KDa and share 25-65% similarity in their amino acid sequence. They are expressed in many tissues, and to date 25 different types of S100 proteins have been identified.

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  • - Equine gastric ulcer syndrome (EGUS) is a common and serious condition in horses that affects their performance and quality of life, with two main forms: ESGD and EGGD.
  • - This study aimed to identify calprotectin (CALP) and aldolase in horse saliva as potential biomarkers for diagnosing EGUS through validated automated assays.
  • - The results indicated that while these assays can effectively differentiate between healthy horses and those with EGUS, they don't significantly distinguish EGUS from other intestinal diseases, suggesting further research is needed.
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  • Calprotectin (CALP) is a protein complex involved in inflammation and can be used as a biomarker for inflammatory conditions like sepsis, measurable in various human fluids.
  • This study focused on validating an automated assay to measure CALP in pig saliva, offering a non-invasive and simple collection method.
  • The results revealed that CALP levels in pig saliva fluctuated throughout the day and increased significantly after exposure to lipopolysaccharide and stress, indicating potential use as a health and welfare indicator for pigs.
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Comprehensive profiling of serum proteome provides valuable clues of health status and pathophysiological processes, making it the main strategy in biomarker discovery. However, the high dynamic range significantly decreases the number of detectable proteins, obstructing the insights into the underlying biological processes. To circumvent various serum enrichment methods, obtain high-quality proteome wide information using the next-generation proteomic, and study host response in canine leishmaniosis, we applied data-independent acquisition mass spectrometry (DIA-MS) for deep proteomic profiling of clinical samples.

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This study examines whether maternal low ω6:ω3 ratio diet and offspring SW supplementation can improve offspring immunity and performance by elucidating the effects on piglet serum proteome. A total of 16 sows were given either a standard (CR, 13:1) or low ω6:ω3 ratio diet (LR, 4:1) during pregnancy and lactation and their male weaned piglets were supplemented with SW powder (4 g/kg, SW) or not (CT) in a 21-day post-weaning (PW) diet. Four PW piglet groups were then identified based on dam and piglet treatment, namely CRCT, CRSW, LRCT, and LRSW (n = 10 each).

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  • The study investigates how a long-term low ω6:ω3 dietary ratio in sows, along with seaweed supplementation in their offspring, affects the intestinal health and growth of piglets by analyzing the proteins in their ileum.
  • Sows were divided into two diet groups: a control group with a high ω6:ω3 ratio and a treatment group with a low ratio, while piglets were further divided based on their seaweed supplementation.
  • Results revealed that the low ω6:ω3 diet positively impacted protein synthesis and cell growth in the piglets, while seaweed improved gut development and reduced inflammation but affected fat absorption differently depending on the maternal diet.
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The effect of dietary Spirulina (Arthrospira platensis) and CAZyme supplementation was assessed on the gut of weaned piglets, using an integrated NMR-metabolomics approach combined with Tandem Mass Tag labelled proteomics. Thirty weaned male piglets were assigned to one of the three following diets (n = 10): cereal and soybean meal basal diet (Control), basal diet with 10% Spirulina inclusion (SP) and SP diet supplemented with 0.01% lysozyme (SP + L).

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  • - This study explored how a low dietary ω6:ω3 fatty acids (FAs) ratio affects the protein profile in the plasma of sows during gestation and lactation, comparing a control group to a low ratio group.
  • - High-resolution mass spectrometry identified 379 proteins, with 4 showing significant differences between the two dietary treatments during gestation, and others indicating changes related to lipoproteins and stress responses by the end of lactation.
  • - Findings suggest that a lower ω6:ω3 FAs ratio enhances the cellular defense against stressors in sows, particularly oxidative stress, by modifying proteins associated with protective mechanisms during critical reproductive phases.
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  • * The research aimed to analyze the serum metabolome of 12 dogs infected with babesiosis compared to 12 healthy dogs, using advanced chromatography techniques, leading to the identification of 295 metabolites.
  • * Findings revealed various metabolic pathways involved in the disease, highlighting the potential for using metabolomics to better understand host-pathogen interactions and the mechanisms behind babesiosis in dogs.
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Herniation of the intervertebral disc (IVDH) is the most common cause of neurological and intervertebral disc degeneration-related diseases. Since the disc starts to degenerate before it can be observed by currently available diagnostic methods, there is an urgent need for novel diagnostic approaches. To identify molecular networks and pathways which may play important roles in intervertebral disc herniation, as well as to reveal the potential features which could be useful for monitoring disease progression and prognosis, multi-omics profiling, including high-resolution liquid chromatography-mass spectrometry (LC-MS)-based metabolomics and tandem mass tag (TMT)-based proteomics was performed.

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Neospora caninum is one of the most prevalent Apicomplexa parasites that causes abortion in cattle, as it infects dogs as its definitive host, causing subclinical disease or active neosporosis, marked by meningoencephalitis, and myopathies with muscle and neuromuscular signs of disease. This study aimed to evaluate the acute phase protein response in dogs seropositive and seronegative for N. caninum.

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  • - The balance of omega-6 to omega-3 fatty acids in the diet is crucial for animal health, with omega-3s showing potential benefits for both sows and their piglets, but the ideal ratio is still debated.
  • - Seaweed is a promising dietary supplement that may improve health and antioxidant levels in post-weaning piglets, although research on its effects in this specific context is limited.
  • - This study investigates how a low omega-6 to omega-3 ratio in sow diets combined with seaweed supplementation in piglet diets impacts growth, oxidative status, and reproductive performance, revealing that the low ratio enhances piglet survival at weaning.
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The acute phase response is a response to injury and depends on the severity of the trauma. Heparin is routinely used for postsurgical treatment of horses to prevent abdominal adhesions; however, its effect on inflammation is unknown. This study aimed to assess systemic inflammatory response of horses subjected to small colon enterotomy and to evaluate heparin effects on postsurgical inflammation.

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Background: Extracellular vesicles (EVs) are small membrane-bound vesicles of growing interest in vetetinary parasitology. The aim of the present report was to provide the first isolation, quantification and protein characterization of EVs from buffalo ( sera infected with spp.

Methods: Infected animals were identified through optical microscopy and PCR.

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In this report, updated information and future perspectives about the use of saliva as a sample for laboratory analysis of the Covid-19 are highlighted. Saliva can be used for the direct detection of the SARS-CoV-2 virus, the quantification of the specific immunoglobulins produced against it, and for the evaluation of the non-specific, innate immune response of the patient. Moreover, a deeper knowledge of potential changes in the saliva proteome in this disease may allow the identification of new diagnostic and prognostic biomarkers, or even help our understanding of the mechanisms associated with the disease.

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  • Chronic valve disease (CVD) is a prevalent heart condition in dogs, affecting 20-40% of the canine population, prompting research on the serum protein profiles of healthy versus CVD-affected dogs using advanced proteomic techniques.
  • The study identified 290 proteins, with 15 showing significant differences, which are linked to important biological pathways such as coagulation, lipid metabolism, and cytoskeleton regulation.
  • Findings suggest similarities between canine CVD and human heart disease, highlighting the potential for discovering new biomarkers and improving understanding of cardiovascular mechanisms in both dogs and humans.
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Background: Currently, the pathogenesis of congestive heart failure (CHF) in cats is not fully understood.

Objective: To identify novel biomarkers for CHF in cats caused by primary cardiomyopathy, particularly related to cardiovascular-renal axis disorder and systemic inflammatory response.

Animals: Twenty-five cats in CHF caused by primary cardiomyopathy, 12 cats with preclinical cardiomyopathy, and 20 healthy controls.

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  • The study examined protein changes in the plasma of dairy cows with different body conditions during their transition period to better understand health impacts.
  • 38 multiparous Holstein cows were divided into high and normal body condition score (BCS) groups and fed different diets to achieve targeted BCS and back fat thickness (BFT).
  • A proteomics analysis of plasma samples identified 254 proteins, with 24 showing significant differences in abundance between cows with low and normal BCS, providing insights into their metabolic health during this critical period.
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In pre-weaning calves, both leucine and threonine play important roles in growth and muscle metabolism. In this study, metabolomics, proteomics and clinical chemistry were used to assess the effects of leucine and threonine supplementation added to milk replacer on 14 newborn Holstein male calves: 7 were fed a control diet (Ctrl) and 7 were fed the Ctrl diet supplemented with 0.3% leucine and 0.

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A biomarker is any measurement reflecting an interaction between a biological system and a potential hazard, which may be chemical, physical, or biological. The One World, One Health concept established that human and animal health and the environmental state are highly interconnected, sharing common aspects that can be applied globally in these three components. In this paper, we review how the concept of One Health can be applied to biomarkers of health and welfare, with a special focus on five points that can be applied to any biomarker when it is expected to be used to evaluate the human, animal or environmental health.

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Research into the identification and use of protein biomarkers for use in veterinary clinical pathology has produced numerous potential analytes that could become common tests in the future. One problem that has to be overcome in the general acceptance of a novel biomarker is that differing standards for calibration may be developed by individual laboratories or the diagnostic companies that will provide kits for widespread use. This has been apparent in the development of acute phase protein biomarkers such as canine C-reactive protein.

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