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Adaptation to high grain diets proceeds through minimal immune system stimulation and differences in extracellular matrix protein expression in a model of subacute ruminal acidosis in non-lactating dairy cows
Download2012
AlZahal, Ousama, McBride, Brian W., Dionissopoulos, Louis, Steele, Michael A.
Problem statement: Subacute Ruminal Acidosis (SARA) is a metabolic disorder affecting approximately 20% of all dairy cattle in North America. Although the presence of SARA has been described for some time, the etiology of the disorder remains uncertain. For example, many animals diagnosed with...
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2011
Willing, Benjamin P., Finlay, B. Brett , Thanachayanont, Teerawat, Croxen, Matthew, Vacharaksa, Anjalee
Host resistance to bacterial infections is thought to be dictated by host genetic factors. Infections by the natural murine enteric pathogen Citrobacter rodentium (used as a model of human enteropathogenic and enterohaemorrhagic E. coli infections) vary between mice strains, from mild...
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Campylobacter jejuni colonization is associated with a dysbiosis in the cecal microbiota of mice in the absence of prominent inflammation
Download2013
Selinger, L. Brent, Inglis, G. Douglas, Uwiera, Richard R. E., Lone, Abdul, Xu, Yong
Background Campylobacter jejuni causes enterocolitis in humans, but does not incite disease in asymptomatic carrier animals. To survive in the intestine, C. jejuni must successfully compete with the microbiota and overcome the host immune defense. Campylobacter jejuni colonization success varies...
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Differences in whole blood gene expression associated with infection time-course and extent of fetal mortality in a reproductive model of type 2 porcine reproductive and respiratory syndrome virus (PRRSV) infection
Download2016
Ladinig, Andrea, Stothard, Paul, Wilkinson, Jamie M., Kommadath, Arun, Plastow, Graham S., Harding, John C. S., Bao, Hua, Lunney, Joan K.
Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) infection of pregnant females causes fetal death and increased piglet mortality, but there is substantial variation in the extent of reproductive pathology between individual dams. This study used RNA-sequencing to characterize the whole...
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Intravaginal lactic acid bacteria modulated local and systemic immune responses and lowered the incidence of uterine infections in periparturient dairy cows
Download2015
Dunn, Suzanna M., Odhiambo, John F., Farooq, Umar, Ametaj, Burim N., Lam, Tran, Deng, Qilan
The objective of this investigation was to evaluate whether intravaginal infusion of a lactic acid bacteria (LAB) cocktail around parturition could influence the immune response, incidence rate of uterine infections, and the overall health status of periparturient dairy cows. One hundred pregnant...
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Lactobacillus reuteri maintains a functional mucosal barrier during DSS treatment despite mucus layer dysfunction
Download2012
Rang, Sara, Roos, Stefan, Phillipson, Mia, Holm, Lena, Dicksved, Johan, Willing, Ben P., Petersson, Joel, Schreiber, Olof
Treatment with the probiotic bacterium Lactobacillus reuteri has been shown to prevent dextran sodium sulfate (DSS)-induced colitis in rats. This is partly due to reduced P-selectin-dependent leukocyte- and platelet-endothelial cell interactions, however, the mechanism behind this protective...
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Potential regulatory role of microRNAs in the development of bovine gastrointestinal tract during early life
Download2014
Liang, Guanxiang, Bao, Hua, Guan, Leluo, Griebel, Philip J., Stothard, Paul, McFadden, Thomas B., Malmuthuge, Nilusha
This study aimed to investigate the potential regulatory role of miRNAs in the development of gastrointestinal tract (GIT) during the early life of dairy calves. Rumen and small intestinal (mid-jejunum and ileum) tissue samples were collected from newborn (30 min after birth; n = 3), 7-day-old...
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Repeated oronasal exposure to lipopolysaccharide induced mucosal IgA responses in periparturient dairy cows
Download2014
Dunn, Suzanna M., Iqbal, Summera, Zebeli, Qendrim, Mansmann, Dominik A., Ametaj, Burim N.
This study investigated the effects of repeated oronasal treatment with lipopolysaccharide (LPS) on the humoral immune responses in saliva, vaginal mucus, and the plasma markers of the acute phase response in periparturient dairy cows. One hundred pregnant Holstein cows were administered either 3...
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Rumen microbial community composition varies with diet and host, but a core microbiome is found across a wide geographical range
Download2015
Cox, Faith, Janssen, Peter H., Henderson, Gemma, Jonker, Arjan, Young, Wayne, Ganesh, Siva
Ruminant livestock are important sources of human food and global greenhouse gas emissions. Feed degradation and methane formation by ruminants rely on metabolic interactions between rumen microbes and affect ruminant productivity. Rumen and camelid foregut microbial community composition was...
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Taxonomic assessment of rumen microbiota using total RNA and targeted amplicon sequencing approaches
Download2016
Janssen, Peter H., Li, Fuyong, Sun, Xu, Cox, Faith, Guan, Leluo, Henderson, Gemma
Taxonomic characterization of active gastrointestinal microbiota is essential to detect shifts in microbial communities and functions under various conditions. This study aimed to identify and quantify potentially active rumen microbiota using total RNA sequencing and to compare the outcomes of...