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Exploring the modulatory role of bovine lactoferrin on the microbiome and the immune response in healthy and Shiga toxin‑producing *** challenged weaned piglets

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Journal of Animal Science and Biotechnology 2024年第3期15卷 1278-1291页

作者： matthias dierick Ruben Ongena Daisy Vanrompay Bert Devriendt Eric Cox Laboratory of Immunology Department of Translational PhysiologyInfectiology and Public HealthFaculty of Veterinary MedicineGhent UniversitySalisburylaan 1339820 MerelbekeBelgium Laboratory for Immunology and Animal Biotechnology Faculty of Bioscience EngineeringGhent UniversityCoupure links 6539000 GhentBelgium

Background Post-weaned piglets suffer from F18+Escherichia coli(***)infections resulting in post-weaning diar-rhoea or oedema *** used management strategies,including colistin and zinc oxide,have contrib-uted to the emergence and spread of antimicrobial *** antimicrobials capable of directly interacting with pathogens and modulating the host immune responses are being *** has shown promising results against porcine enterotoxigenic *** strains,both in vitro and in *** We investigated the influence of bovine lactoferrin(bLF)on the microbiome of healthy and infected weaned ***,we assessed whether bLF influenced the immune responses upon Shiga toxin-producing ***(STEC)***,2 in vivo trials were conducted:a microbiome trial and a challenge infection trial,using an F18+STEC *** did not affect theα-andβ-***,bLF groups showed a higher relative abundance(RA)for the Actinobacteria phylum and the Bifidobacterium genus in the ileal *** analysing the immune response upon infection,the STEC group exhibited a significant increase in F18-specific IgG serum levels,whereas this response was absent in the bLF *** Taken together,the oral administration of bLF did not have a notable impact on theα-andβ-diversity of the gut microbiome in weaned ***,it did increase the RA of the Actinobacteria phylum and Bifi-dobacterium genus,which have previously been shown to play an important role in maintaining gut ***,bLF administration during STEC infection resulted in the absence of F18-specific serum IgG responses.

关键词： E.coli Immune modulation Lactoferrin Microbiome

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Health anxiety and work loss in patients diagnosed with serrated polyposis syndrome:A cross sectional study

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World Journal of Clinical Oncology 2025年第2期16卷 52-62页

作者： Angus Thompson Natalie R dierick Louise Heiniger Stuart N Kostalas School of Clinical Medicine University of New South WalesPort Macquarie 2444New South WalesAustralia Department of Gastroenterology Port Macquarie GastroenterologyPort Macquarie 2444New South WalesAustralia

BACKGROUND Serrated polyposis syndrome(SPS)is a polyposis condition with neoplastic potential,but its psychological impact is not well *** To assess health anxiety prevalence in a regional Australian cohort of SPS patients and explore factors influencing it,including workforce impacts of regular *** This cross-sectional study screened patients aged 18-65 undergoing colonoscopy in a regional gastroenterology practice between January 2015 and June *** SPS patients were invited to *** included the Short Health Anxiety Inventory,employment status,and previous demographic and medical *** Health anxiety was found in 21.57%of SPS patients,with anxious patients being significantly more concerned about surveillance(OR=7.70).Patients lost an average of 11.04 work hours per *** Health anxiety in SPS patients aligns with rates in other gastroenterology *** it may improve management,though further research is needed to better understand prevalence and care improvements.

关键词： Serrated polyposis syndrome Health anxiety Colorectal cancer Surveillance

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Non-starch Polysaccharide Degrading Enzymes in Corn and Wheat-Based Broiler Diets： Dual Activity for Major Substrates

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Journal of Agricultural Science and Technology(A) 2018年第2期8卷 76-88页

作者： Kirsten De Keyser Noel dierick Leni Kuterna Olivier Maigret Sebastian Kaczmarek Andrzej Rutkowski Erik Vanderbeke AVEVE Biochem NV Eugeen Meeusstraat 6 Merksem 2170 Belgium Department of Animal Sciences and Aquatic Ecology Faculty of Bioscience Engineering Ghent University Coupure Links 653 Ghent 9000 Belgium Department of Animal Nutrition University of Life Sciences ul. Wojska Polskiego 28 Poznań60-637 Poland

This study consolidates the efficacy of a non-starch polysaccharide （NSP）ase enzyme-concept in corn and wheat-based broiler diets. The NSP building blocks of corn, wheat and soybean meal （SBM, 44% protein） were studied first. Cereal NSP primarily consists of arabinose, xylose and glucose molecules that form arabinoxylan, β-glucan and cellulose polysaccharides. In soybean meal （SBM）, glucose （cellulose） predominates, next to galactose and uronic acids that form “pectins”. Broiler performance progress using in-feed NSPase enzymes depends on the concentration, complexity and solubility of the substrate and the genetic potential of the animal, mainly. A dual NSPase enzyme-concept for cereal and SBM NSP, predominantly being arabinoxylan, β-glucan and cellulose, was developed. Methods for measuring enzyme activities （endo-1,4-β-xylanase （EC 3.***.1.8） and endo-1,3（4）-β-glucanase （EC 3.***.1.6）） were developed （AVEVE Biochem UNITS） and preparations thereof （XG） standardized to meet requirements for most challenging NSP （corn, barely soluble）. Feed intake （FI）, bodyweight gain （BWG） and feed：gain ratio （F：G） were assessed in three zootechnical studies, each using 160 Ross 308 broilers split in two feeding groups with 80 birds/group （10 replicates of eight） for 42 d （starter/grower period）. Respective corn-SBM, wheat-SBM and corn/wheat-SBM diets were used as negative control （NC） or added with the enzyme-concept （XG）. In the total period, XG ameliorated BWG and F：G compared to NC in each study, where BWG increased best in diets with corn and F：G lowered most in diets with wheat. The dual NSPase enzyme-concept offers ingredient flexibility in present setting by enhancing the nutritional content of corn, wheat and SBM, expectedly from cleaving major NSP target molecules. Thereby, broiler professionals increase feed formulation liberty and safety and production result simultaneously.

关键词： Broiler xylanase glucanase BWG F:G corn wheat SBM

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