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Vonk MM, Engen PA, Naqib A, Green SJ, Keshavarzian A, Blokhuis BRJ, Garssen J, Knippels LMJ, van Esch BCAM. Altered microbial community structure and metabolism in cow's milk allergic mice treated with oral immunotherapy and fructo-oligosaccharides. Benef Microbes 2019; 11:19-32. [PMID: 32066258 DOI: 10.3920/bm2019.0024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Previously, we showed enhanced efficacy of oral immunotherapy (OIT) using fructo-oligosaccharides (FOS, prebiotics) added to the diet of cow's milk allergic mice indicated by a reduction in clinical symptoms and mast cell degranulation. Prebiotics are fermented by gut bacteria, affecting both bacterial composition and availability of metabolites (i.e. short-chain fatty acids (SCFA)). It is thus far unknown which microbial alterations are involved in successful outcomes of OIT with prebiotic supplementation for the treatment of food allergy. To explore potential changes in the microbiota composition and availability of SCFA induced by OIT+FOS. C3H/HeOuJ mice were sensitised and received OIT with or without a FOS supplemented diet. After three weeks, faecal samples were collected to analyse gut microbiota composition using 16S rRNA sequencing. SCFA concentrations were determined in cecum content. FOS supplementation in sensitised mice changed the overall microbial community structure in faecal samples compared to sensitised mice fed the control diet (P=0.03). In contrast, a high level of resemblance in bacterial community structure was observed between the non-sensitised control mice and the OIT+FOS treated mice. OIT mice showed an increased relative abundance of the dysbiosis-associated phylum Proteobacteria compared to the OIT+FOS mice. FOS supplementation increased the relative abundance of genus Allobaculum (Firmicutes), putative butyrate-producing bacteria. OIT+FOS reduced the abundances of the genera's unclassified Rikenellaceae (Bacteroidetes, putative pro-inflammatory bacteria) and unclassified Clostridiales (Firmicutes) compared to sensitised controls and increased the abundance of Lactobacillus (Firmicutes, putative beneficial bacteria) compared to FOS. OIT+FOS mice had increased butyric acid and propionic acid concentrations. OIT+FOS induced a microbial profile closely linked to non-allergic mice and increased concentrations of butyric acid and propionic acid. Future research should confirm whether there is a causal relationship between microbial modulation and the reduction in acute allergic symptoms induced by OIT+FOS.
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Affiliation(s)
- M M Vonk
- Utrecht Institute for Pharmaceutical Sciences, Department of Pharmacology, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, the Netherlands.,Immunology Platform, Danone Nutricia Research, Uppsalalaan 12, 3584 CT Utrecht, the Netherlands
| | - P A Engen
- Department of Internal Medicine, Division of Digestive Diseases and Nutrition, Section of Gastroenterology, Rush University Medical Center, 1653 W Congress Pkwy, Chicago, IL 60612, USA
| | - A Naqib
- DNA Services Facility, Research Resources Center, University of Illinois at Chicago, 835 S. Wolcott, A-310, Chicago, IL 60612, USA
| | - S J Green
- DNA Services Facility, Research Resources Center, University of Illinois at Chicago, 835 S. Wolcott, A-310, Chicago, IL 60612, USA.,Department of Biological Sciences, University of Illinois at Chicago, 845 W Taylor St, Chicago, IL 60607, USA
| | - A Keshavarzian
- Utrecht Institute for Pharmaceutical Sciences, Department of Pharmacology, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, the Netherlands.,Department of Internal Medicine, Division of Digestive Diseases and Nutrition, Section of Gastroenterology, Rush University Medical Center, 1653 W Congress Pkwy, Chicago, IL 60612, USA.,Department of Pharmacology, Rush University Medical Center, 1653 W Congress Pkwy, Chicago, IL 60612, USA.,Department of Physiology, Rush University Medical Center, 1653 W Congress Pkwy, Chicago, IL 60612, USA
| | - B R J Blokhuis
- Utrecht Institute for Pharmaceutical Sciences, Department of Pharmacology, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, the Netherlands
| | - J Garssen
- Utrecht Institute for Pharmaceutical Sciences, Department of Pharmacology, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, the Netherlands.,Immunology Platform, Danone Nutricia Research, Uppsalalaan 12, 3584 CT Utrecht, the Netherlands
| | - L M J Knippels
- Utrecht Institute for Pharmaceutical Sciences, Department of Pharmacology, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, the Netherlands.,Immunology Platform, Danone Nutricia Research, Uppsalalaan 12, 3584 CT Utrecht, the Netherlands
| | - B C A M van Esch
- Utrecht Institute for Pharmaceutical Sciences, Department of Pharmacology, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, the Netherlands.,Immunology Platform, Danone Nutricia Research, Uppsalalaan 12, 3584 CT Utrecht, the Netherlands
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Perez-Pardo P, Dodiya H, Engen P, Naqib A, Forsyth C, Green S, Garssen J, Keshavarzian A, Kraneveld A. Gut bacterial composition in a mouse model of Parkinson’s disease. Benef Microbes 2018; 9:799-814. [DOI: 10.3920/bm2017.0202] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The mechanism of neurodegeneration in Parkinson’s disease (PD) remains unknown but it has been hypothesised that the intestinal tract could be an initiating and contributing factor to the neurodegenerative processes. In PD patients as well as in animal models for PD, alpha-synuclein-positive enteric neurons in the colon and evidence of colonic inflammation have been demonstrated. Moreover, several studies reported pro-inflammatory bacterial dysbiosis in PD patients. Here, we report for the first time significant changes in the composition of caecum mucosal associated and luminal microbiota and the associated metabolic pathways in a rotenone-induced mouse model for PD. The mouse model for PD, induced by the pesticide rotenone, is associated with an imbalance in the gut microbiota, characterised by a significant decrease in the relative abundance of the beneficial commensal bacteria genus Bifidobacterium. Overall, intestinal bacterial dysbiosis might play an important role in both the disruption of intestinal epithelial integrity and intestinal inflammation, which could lead or contribute to the observed alpha-synuclein aggregation and PD pathology in the intestine and central nervous system in the oral rotenone mouse model of PD.
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Affiliation(s)
- P. Perez-Pardo
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, the Netherlands
| | - H.B. Dodiya
- Department of Internal Medicine, Division of Digestive Disease and Nutrition, Rush University Medical Center, 1725 West Harrison Street, Chicago, IL 60612, USA
| | - P.A. Engen
- Department of Internal Medicine, Division of Digestive Disease and Nutrition, Rush University Medical Center, 1725 West Harrison Street, Chicago, IL 60612, USA
| | - A. Naqib
- DNA Services Facility, University of Illinois, 835 S Wolcott, Chicago, IL 60612, USA
| | - C.B. Forsyth
- Department of Internal Medicine, Division of Digestive Disease and Nutrition, Rush University Medical Center, 1725 West Harrison Street, Chicago, IL 60612, USA
| | - S.J. Green
- DNA Services Facility, University of Illinois, 835 S Wolcott, Chicago, IL 60612, USA
| | - J. Garssen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, the Netherlands
- Nutricia Research, Uppsalalaan 12, 3584 CT Utrecht, the Netherlands
| | - A. Keshavarzian
- Department of Internal Medicine, Division of Digestive Disease and Nutrition, Rush University Medical Center, 1725 West Harrison Street, Chicago, IL 60612, USA
| | - A.D. Kraneveld
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, the Netherlands
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 104, 3584 CM Utrecht, the Netherlands
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Naqib A, Mir B, Beigh A. A comparative evaluation of the effects of oral lorazepam, alprazolam and diazepam on venous admixture. J Assoc Physicians India 2002; 50:387-90. [PMID: 11922228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
OBJECTIVE To compare the effects of oral diazepam, lorazepam and alprazolam premedication on venous admixture. MATERIAL AND METHODS One hundred fifty patients divided in three groups were included in the study. The venous admixture was determined using the ISO-shunt nomogram. The values obtained 90 minutes after administration of the drugs were compared with the values before the drug administration. The Student's t-test was applied to find out the significance. RESULTS These were highly significant change in increase in venous admixture (Qs/Qt) in group I patients 90 minutes after premedication as compared to premedication values. There was statistically insignificant difference in venous admixture (Qs/Qt) in group II and group III patients 90 minutes after premedication as compared to premedication values. CONCLUSION From the present study it can be concluded that 2 mg of oral lorozepam given 90 minutes before surgery to healthy patients have significant effects on venous admixture. However, the effects of alprazolam and diazepam had no significant effect on venous admixture.
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Affiliation(s)
- A Naqib
- Department of Anaesthesiology, SKIMS, Soura, Srinagar-Kashmir
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