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Goossens E, Debyser G, Callens C, De Gussem M, Dedeurwaerder A, Devreese B, Haesebrouck F, Flügel M, Pelzer S, Thiemann F, Ducatelle R, Van Immerseel F. Elevated faecal ovotransferrin concentrations are indicative for intestinal barrier failure in broiler chickens. Vet Res 2018; 49:51. [PMID: 29925427 PMCID: PMC6011339 DOI: 10.1186/s13567-018-0548-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 06/04/2018] [Indexed: 02/06/2023] Open
Abstract
Intestinal health is critically important for the welfare and performance of poultry. Enteric diseases that cause gut barrier failure result in high economic losses. Up till now there is no reliable faecal marker to measure gut barrier failure under field conditions. Therefore, the aim of the present study was to identify a faecal protein marker for diminished intestinal barrier function due to enteric diseases in broilers. To assess this, experimental necrotic enteritis and coccidiosis in broilers were used as models for gut barrier failure. Ovotransferrin was identified as a marker for gut barrier failure using a proteomics approach on samples from chickens with necrotic enteritis. These results were confirmed via ELISA on samples derived from both necrotic enteritis and coccidiosis trials, where faecal ovotransferrin levels were significantly correlated with the severity of gut barrier failure caused by either coccidiosis or necrotic enteritis. This indicates that faecal ovotransferrin quantification may represent a valuable tool to measure gut barrier failure caused by enteric pathogens.
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Affiliation(s)
- Evy Goossens
- Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Griet Debyser
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Ghent University, K.L. Ledeganckstraat 35, 9000, Ghent, Belgium
| | - Chana Callens
- Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | | | | | - Bart Devreese
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Ghent University, K.L. Ledeganckstraat 35, 9000, Ghent, Belgium
| | - Freddy Haesebrouck
- Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Monika Flügel
- Evonik Nutrition & Care GmbH, 33790, Halle, Westfalen, Germany
| | - Stefan Pelzer
- Evonik Nutrition & Care GmbH, 33790, Halle, Westfalen, Germany
| | - Frank Thiemann
- Evonik Nutrition & Care GmbH, 33790, Halle, Westfalen, Germany
| | - Richard Ducatelle
- Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Filip Van Immerseel
- Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium.
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Faecal proteomics: A tool to investigate dysbiosis and inflammation in patients with cystic fibrosis. J Cyst Fibros 2015; 15:242-50. [PMID: 26330184 DOI: 10.1016/j.jcf.2015.08.003] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 07/02/2015] [Accepted: 08/13/2015] [Indexed: 12/20/2022]
Abstract
BACKGROUND Several microbial studies reported gut microbiota dysbiosis in patients with cystic fibrosis (CF). The functional consequences of this phenomenon are poorly understood. Faecal metaproteomics allows the quantitative analysis of host and microbial proteins to address functional changes resulting from this dysbiosis. METHODS We analysed faecal protein extracts from fifteen patients with CF that have pancreatic insufficiency and from their unaffected siblings by shotgun proteomics. Novel computational and statistical tools were introduced to evaluate changes in taxonomic composition and protein abundance. RESULTS Faecal protein extracts from patients with CF were dominated by host proteins involved in inflammation and mucus formation. Taxonomic analysis of the microbial proteins confirmed the strong reduction of butyrate reducers such as Faecalibacterium prausnitzii and increase of Enterobacteriaceae, Ruminococcus gnavus and Clostridia species. CONCLUSION Faecal metaproteomics provides insights in intestinal dysbiosis, inflammation in patients with CF and can be used to monitor different disease markers in parallel.
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Harlow DE, Macklin WB. Inhibitors of myelination: ECM changes, CSPGs and PTPs. Exp Neurol 2013; 251:39-46. [PMID: 24200549 DOI: 10.1016/j.expneurol.2013.10.017] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 10/22/2013] [Accepted: 10/26/2013] [Indexed: 01/06/2023]
Abstract
After inflammation-induced demyelination, such as in the disease multiple sclerosis, endogenous remyelination often fails. However, in animal models of demyelination induced with toxins, remyelination can be quite robust. A significant difference between inflammation-induced and toxin-induced demyelination is the response of local cells within the lesion, including astrocytes, oligodendrocytes, microglia/macrophages, and NG2+ cells, which respond to inflammatory stimuli with increased extracellular matrix (ECM) protein and chondroitin sulfate proteoglycan (CSPG) production and deposition. Here, we summarize current knowledge of ECM changes in demyelinating lesions, as well as oligodendrocyte responses to aberrant ECM proteins and CSPGs after various types of demyelinating insults. The discovery that CSPGs act through the receptor protein tyrosine phosphatase sigma (PTPσ) and the Rho-ROCK pathway to inhibit oligodendrocyte process extension and myelination, but not oligodendrocyte differentiation (Pendleton et al., Experimental Neurology (2013) vol. 247, pp. 113-121), highlights the need to better understand the ECM changes that accompany demyelination and their influence on oligodendrocytes and effective remyelination.
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Affiliation(s)
- Danielle E Harlow
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, 12801 East 17th Avenue, Research Complex 1 South, Mail Stop 8108, Aurora, CO 80045, USA; Center for NeuroScience, University of Colorado School of Medicine, 12801 East 17th Avenue, Research Complex 1 South, Mail Stop 8108, Aurora, CO 80045, USA.
| | - Wendy B Macklin
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, 12801 East 17th Avenue, Research Complex 1 South, Mail Stop 8108, Aurora, CO 80045, USA; Center for NeuroScience, University of Colorado School of Medicine, 12801 East 17th Avenue, Research Complex 1 South, Mail Stop 8108, Aurora, CO 80045, USA.
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Struijs K, Van de Wiele T, Le TT, Debyser G, Dewettinck K, Devreese B, Van Camp J. Milk fat globule membrane glycoproteins prevent adhesion of the colonic microbiota and result in increased bacterial butyrate production. Int Dairy J 2013. [DOI: 10.1016/j.idairyj.2013.05.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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