1
|
Neuen SM, Ophelders DR, Widowski H, Hütten MC, Brokken T, van Gorp C, Nikkels PG, Severens-Rijvers CA, Sthijns MM, van Blitterswijk CA, Troost FJ, LaPointe VL, Jolani S, Seiler C, Pillow JJ, Delhaas T, Reynaert NL, Wolfs TG. Multipotent adult progenitor cells prevent functional impairment and improve development in inflammation driven detriment of preterm ovine lungs. Regen Ther 2024; 27:207-217. [PMID: 38576851 PMCID: PMC10990734 DOI: 10.1016/j.reth.2024.03.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 03/01/2024] [Accepted: 03/15/2024] [Indexed: 04/06/2024] Open
Abstract
Background Perinatal inflammation increases the risk for bronchopulmonary dysplasia in preterm neonates, but the underlying pathophysiological mechanisms remain largely unknown. Given their anti-inflammatory and regenerative capacity, multipotent adult progenitor cells (MAPC) are a promising cell-based therapy to prevent and/or treat the negative pulmonary consequences of perinatal inflammation in the preterm neonate. Therefore, the pathophysiology underlying adverse preterm lung outcomes following perinatal inflammation and pulmonary benefits of MAPC treatment at the interface of prenatal inflammatory and postnatal ventilation exposures were elucidated. Methods Instrumented ovine fetuses were exposed to intra-amniotic lipopolysaccharide (LPS 5 mg) at 125 days gestation to induce adverse systemic and peripheral organ outcomes. MAPC (10 × 106 cells) or saline were administered intravenously two days post LPS exposure. Fetuses were delivered preterm five days post MAPC treatment and either killed humanely immediately or mechanically ventilated for 72 h. Results Antenatal LPS exposure resulted in inflammation and decreased alveolar maturation in the preterm lung. Additionally, LPS-exposed ventilated lambs showed continued pulmonary inflammation and cell junction loss accompanied by pulmonary edema, ultimately resulting in higher oxygen demand. MAPC therapy modulated lung inflammation, prevented loss of epithelial and endothelial barriers and improved lung maturation in utero. These MAPC-driven improvements remained evident postnatally, and prevented concomitant pulmonary edema and functional loss. Conclusion In conclusion, prenatal inflammation sensitizes the underdeveloped preterm lung to subsequent postnatal inflammation, resulting in injury, disturbed development and functional impairment. MAPC therapy partially prevents these changes and is therefore a promising approach for preterm infants to prevent adverse pulmonary outcomes.
Collapse
Affiliation(s)
- Sophie M.L. Neuen
- Department of Pediatrics, Maastricht University Medical Center, MosaKids Children's Hospital, Maastricht, the Netherlands
- GROW Research Institute for Oncology and Reproduction, Maastricht University, Maastricht, the Netherlands
| | - Daan R.M.G. Ophelders
- Department of Pediatrics, Maastricht University Medical Center, MosaKids Children's Hospital, Maastricht, the Netherlands
- GROW Research Institute for Oncology and Reproduction, Maastricht University, Maastricht, the Netherlands
| | - Helene Widowski
- Department of Pediatrics, Maastricht University Medical Center, MosaKids Children's Hospital, Maastricht, the Netherlands
- GROW Research Institute for Oncology and Reproduction, Maastricht University, Maastricht, the Netherlands
- Department of BioMedical Engineering, Maastricht University, Maastricht, the Netherlands
| | - Matthias C. Hütten
- Department of Pediatrics, Maastricht University Medical Center, MosaKids Children's Hospital, Maastricht, the Netherlands
- GROW Research Institute for Oncology and Reproduction, Maastricht University, Maastricht, the Netherlands
| | - Tim Brokken
- Department of Pediatrics, Maastricht University Medical Center, MosaKids Children's Hospital, Maastricht, the Netherlands
- GROW Research Institute for Oncology and Reproduction, Maastricht University, Maastricht, the Netherlands
| | - Charlotte van Gorp
- Department of Pediatrics, Maastricht University Medical Center, MosaKids Children's Hospital, Maastricht, the Netherlands
- GROW Research Institute for Oncology and Reproduction, Maastricht University, Maastricht, the Netherlands
| | - Peter G.J. Nikkels
- Department of Pathology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Carmen A.H. Severens-Rijvers
- GROW Research Institute for Oncology and Reproduction, Maastricht University, Maastricht, the Netherlands
- Department of Pathology, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Mireille M.J.P.E. Sthijns
- Food Innovation and Health, Department of Human Biology, Maastricht University, Venlo, the Netherlands
- NUTRIM Institute of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, the Netherlands
- MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, the Netherlands
| | | | - Freddy J. Troost
- Food Innovation and Health, Department of Human Biology, Maastricht University, Venlo, the Netherlands
| | - Vanessa L.S. LaPointe
- MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, the Netherlands
| | - Shahab Jolani
- Department of Methodology and Statistics, School CAPHRI, Care and Public Health Research Institute, Maastricht University, Maastricht, the Netherlands
| | - Christof Seiler
- Department of Advanced Computing Sciences, Maastricht University, Maastricht, the Netherlands
- Mathematics Centre Maastricht, Maastricht University, the Netherlands
| | - J. Jane Pillow
- School of Human Sciences, University of Western Australia, Perth, WA, Australia
| | - Tammo Delhaas
- Department of BioMedical Engineering, Maastricht University, Maastricht, the Netherlands
- CARIM School for Cardiovascular Diseases, Maastricht University, Maastricht, the Netherlands
| | - Niki L. Reynaert
- NUTRIM Institute of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, the Netherlands
- Department of Respiratory Medicine, Maastricht University, Maastricht, the Netherlands
| | - Tim G.A.M. Wolfs
- Department of Pediatrics, Maastricht University Medical Center, MosaKids Children's Hospital, Maastricht, the Netherlands
- GROW Research Institute for Oncology and Reproduction, Maastricht University, Maastricht, the Netherlands
| |
Collapse
|
2
|
van Gorp C, de Lange IH, Hütten MC, López-Iglesias C, Massy KRI, Kessels L, Knoops K, Cuijpers I, Sthijns MMJPE, Troost FJ, van Gemert WG, Spiller OB, Birchenough GMH, Zimmermann LJI, Wolfs TGAM. Antenatal Ureaplasma Infection Causes Colonic Mucus Barrier Defects: Implications for Intestinal Pathologies. Int J Mol Sci 2024; 25:4000. [PMID: 38612809 PMCID: PMC11011967 DOI: 10.3390/ijms25074000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/29/2024] [Accepted: 04/01/2024] [Indexed: 04/14/2024] Open
Abstract
Chorioamnionitis is a risk factor for necrotizing enterocolitis (NEC). Ureaplasma parvum (UP) is clinically the most isolated microorganism in chorioamnionitis, but its pathogenicity remains debated. Chorioamnionitis is associated with ileal barrier changes, but colonic barrier alterations, including those of the mucus barrier, remain under-investigated, despite their importance in NEC pathophysiology. Therefore, in this study, the hypothesis that antenatal UP exposure disturbs colonic mucus barrier integrity, thereby potentially contributing to NEC pathogenesis, was investigated. In an established ovine chorioamnionitis model, lambs were intra-amniotically exposed to UP or saline for 7 d from 122 to 129 d gestational age. Thereafter, colonic mucus layer thickness and functional integrity, underlying mechanisms, including endoplasmic reticulum (ER) stress and redox status, and cellular morphology by transmission electron microscopy were studied. The clinical significance of the experimental findings was verified by examining colon samples from NEC patients and controls. UP-exposed lambs have a thicker but dysfunctional colonic mucus layer in which bacteria-sized beads reach the intestinal epithelium, indicating undesired bacterial contact with the epithelium. This is paralleled by disturbed goblet cell MUC2 folding, pro-apoptotic ER stress and signs of mitochondrial dysfunction in the colonic epithelium. Importantly, the colonic epithelium from human NEC patients showed comparable mitochondrial aberrations, indicating that NEC-associated intestinal barrier injury already occurs during chorioamnionitis. This study underlines the pathogenic potential of UP during pregnancy; it demonstrates that antenatal UP infection leads to severe colonic mucus barrier deficits, providing a mechanistic link between antenatal infections and postnatal NEC development.
Collapse
Affiliation(s)
- Charlotte van Gorp
- Department of Pediatrics, School for Oncology and Reproduction (GROW), Maastricht University, 6229 ER Maastricht, The Netherlands; (C.v.G.); (M.C.H.); (K.R.I.M.); (L.K.); (L.J.I.Z.)
| | - Ilse H. de Lange
- Department of Pediatrics, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 6229 ER Maastricht, The Netherlands;
| | - Matthias C. Hütten
- Department of Pediatrics, School for Oncology and Reproduction (GROW), Maastricht University, 6229 ER Maastricht, The Netherlands; (C.v.G.); (M.C.H.); (K.R.I.M.); (L.K.); (L.J.I.Z.)
- Neonatology, Department of Pediatrics, University Hospital RWTH Aachen, 52074 Aachen, Germany
| | - Carmen López-Iglesias
- Microscopy CORE Lab, Maastricht Multimodal Molecular Imaging Institute (M4I), Maastricht University, 6211 LK Maastricht, The Netherlands; (C.L.-I.); (K.K.)
| | - Kimberly R. I. Massy
- Department of Pediatrics, School for Oncology and Reproduction (GROW), Maastricht University, 6229 ER Maastricht, The Netherlands; (C.v.G.); (M.C.H.); (K.R.I.M.); (L.K.); (L.J.I.Z.)
| | - Lilian Kessels
- Department of Pediatrics, School for Oncology and Reproduction (GROW), Maastricht University, 6229 ER Maastricht, The Netherlands; (C.v.G.); (M.C.H.); (K.R.I.M.); (L.K.); (L.J.I.Z.)
| | - Kèvin Knoops
- Microscopy CORE Lab, Maastricht Multimodal Molecular Imaging Institute (M4I), Maastricht University, 6211 LK Maastricht, The Netherlands; (C.L.-I.); (K.K.)
| | - Iris Cuijpers
- Food Innovation and Health, Department of Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 5911 BV Venlo, The Netherlands; (I.C.); (M.M.J.P.E.S.); (F.J.T.)
| | - Mireille M. J. P. E. Sthijns
- Food Innovation and Health, Department of Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 5911 BV Venlo, The Netherlands; (I.C.); (M.M.J.P.E.S.); (F.J.T.)
| | - Freddy J. Troost
- Food Innovation and Health, Department of Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 5911 BV Venlo, The Netherlands; (I.C.); (M.M.J.P.E.S.); (F.J.T.)
| | - Wim G. van Gemert
- Department of Surgery, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 6229 ER Maastricht, The Netherlands;
| | - Owen B. Spiller
- Division of Infection and Immunity, School of Medicine, Cardiff University, Cardiff CF14 4XW, UK;
| | - George M. H. Birchenough
- Department of Medical Biochemistry, Institute of Biomedicine, University of Gothenburg, 40530 Gothenburg, Sweden;
| | - Luc J. I. Zimmermann
- Department of Pediatrics, School for Oncology and Reproduction (GROW), Maastricht University, 6229 ER Maastricht, The Netherlands; (C.v.G.); (M.C.H.); (K.R.I.M.); (L.K.); (L.J.I.Z.)
| | - Tim G. A. M. Wolfs
- Department of Pediatrics, School for Oncology and Reproduction (GROW), Maastricht University, 6229 ER Maastricht, The Netherlands; (C.v.G.); (M.C.H.); (K.R.I.M.); (L.K.); (L.J.I.Z.)
- Department of Biomedical Engineering (BMT), School for Cardiovascular Diseases (CARIM), Maastricht University, 6229 ER Maastricht, The Netherlands
| |
Collapse
|
3
|
van Steenwijk HP, Winter E, Knaven E, Brouwers JF, van Baardwijk M, van Dalum JB, Luijendijk TJC, van Osch FHM, Troost FJ, Bast A, Semen KO, de Boer A. The beneficial effect of sulforaphane on platelet responsiveness during caloric load: a single-intake, double-blind, placebo-controlled, crossover trial in healthy participants. Front Nutr 2023; 10:1204561. [PMID: 37485383 PMCID: PMC10359317 DOI: 10.3389/fnut.2023.1204561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 06/15/2023] [Indexed: 07/25/2023] Open
Abstract
Background and aims As our understanding of platelet activation in response to infections and/or inflammatory conditions is growing, it is becoming clearer that safe, yet efficacious, platelet-targeted phytochemicals could improve public health beyond the field of cardiovascular diseases. The phytonutrient sulforaphane shows promise for clinical use due to its effect on inflammatory pathways, favorable pharmacokinetic profile, and high bioavailability. The potential of sulforaphane to improve platelet functionality in impaired metabolic processes has however hardly been studied in humans. This study investigated the effects of broccoli sprout consumption, as a source of sulforaphane, on urinary 11-dehydro-thromboxane B2 (TXB2), a stable thromboxane metabolite used to monitor eicosanoid biosynthesis and response to antithrombotic therapy, in healthy participants exposed to caloric overload. Methods In this double-blind, placebo-controlled, crossover trial 12 healthy participants were administered 16g of broccoli sprouts, or pea sprouts (placebo) followed by the standardized high-caloric drink PhenFlex given to challenge healthy homeostasis. Urine samples were collected during the study visits and analyzed for 11-dehydro-TXB2, sulforaphane and its metabolites. Genotyping was performed using Illumina GSA v3.0 DTCBooster. Results Administration of broccoli sprouts before the caloric load reduced urinary 11-dehydro-TXB2 levels by 50% (p = 0.018). The amount of sulforaphane excreted in the urine during the study visits correlated negatively with 11-dehydro-TXB2 (rs = -0.377, p = 0.025). Participants carrying the polymorphic variant NAD(P)H dehydrogenase quinone 1 (NQO1*2) showed decreased excretion of sulforaphane (p = 0.035). Conclusion Sulforaphane was shown to be effective in targeting platelet responsiveness after a single intake. Our results indicate an inverse causal relationship between sulforaphane and 11-dehydro-TXB2, which is unaffected by the concomitant intake of the metabolic challenge. 11-Dehydro-TXB2 shows promise as a non-invasive, sensitive, and suitable biomarker to investigate the effects of phytonutrients on platelet aggregation within hours. Clinical trial registration [https://clinicaltrials.gov/], identifier [NCT05146804].
Collapse
Affiliation(s)
- Hidde P. van Steenwijk
- Food Claims Centre Venlo, Faculty of Science and Engineering, Maastricht University, Maastricht, Netherlands
| | - Evi Winter
- Food Claims Centre Venlo, Faculty of Science and Engineering, Maastricht University, Maastricht, Netherlands
| | - Edward Knaven
- Research Group Analysis Techniques in the Life Sciences, Avans University of Applied Sciences, Breda, Netherlands
| | - Jos F. Brouwers
- Research Group Analysis Techniques in the Life Sciences, Avans University of Applied Sciences, Breda, Netherlands
| | - Myrthe van Baardwijk
- Omnigen B.V., Delft, Netherlands
- Department of Pathology and Clinical Bioinformatics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | | | | | - Frits H. M. van Osch
- Department of Clinical Epidemiology, VieCuri Medical Center, Venlo, Netherlands
- Department of Epidemiology, NUTRIM, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, Netherlands
| | - Freddy J. Troost
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
- Food Innovation and Health, Centre for Healthy Eating and Food Innovation, Maastricht University, Maastricht, Netherlands
| | - Aalt Bast
- University College Venlo, Faculty of Science and Engineering, Maastricht University, Maastricht, Netherlands
- Department of Pharmacology and Toxicology, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, Netherlands
| | - Khrystyna O. Semen
- University College Venlo, Faculty of Science and Engineering, Maastricht University, Maastricht, Netherlands
| | - Alie de Boer
- Food Claims Centre Venlo, Faculty of Science and Engineering, Maastricht University, Maastricht, Netherlands
| |
Collapse
|
4
|
Zaccaria E, Klaassen T, Alleleyn AME, Boekhorst J, Smokvina T, Kleerebezem M, Troost FJ. Endogenous small intestinal microbiome determinants of transient colonisation efficiency by bacteria from fermented dairy products: a randomised controlled trial. Microbiome 2023; 11:43. [PMID: 36879297 PMCID: PMC9990280 DOI: 10.1186/s40168-023-01491-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND The effects of fermented food consumption on the small intestine microbiome and its role on host homeostasis are largely uncharacterised as our knowledge on intestinal microbiota relies mainly on faecal samples analysis. We investigated changes in small intestinal microbial composition and functionality, short chain fatty acid (SCFA) profiles, and on gastro-intestinal (GI) permeability in ileostomy subjects upon the consumption of fermented milk products. RESULTS We report the results from a randomised, cross-over, explorative study where 16 ileostomy subjects underwent 3, 2-week intervention periods. In each period, they consumed either milk fermented by Lacticaseibacillus rhamnosus CNCM I-3690, or milk fermented by Streptococcus thermophilus CNCM I-1630 and Lactobacillus delbrueckii subsp. bulgaricus CNCM I-1519, or a chemically acidified milk (placebo) daily. We performed metataxonomic, metatranscriptomic analysis, and SCFA profiling of ileostomy effluents as well as a sugar permeability test to investigate the microbiome impact of these interventions and their potential effect on mucosal barrier function. Consumption of the intervention products impacted the overall small intestinal microbiome composition and functionality, mainly due to the introduction of the product-derived bacteria that reach in several samples 50% of the total microbial community. The interventions did not affect the SCFA levels in ileostoma effluent, or gastro-intestinal permeability and the effects on the endogenous microbial community were negligible. The impact on microbiome composition was highly personalised, and we identified the poorly characterised bacterial family, Peptostreptococcaceae, to be positively associated with a low abundance of the ingested bacteria. Activity profiling of the microbiota revealed that carbon- versus amino acid-derived energy metabolism of the endogenous microbiome could be responsible for the individual-specific intervention effects on the small intestine microbiome composition and function, reflected also on urine microbial metabolites generated through proteolytic fermentation. CONCLUSIONS The ingested bacteria are the main drivers of the intervention effect on the small intestinal microbiota composition. Their transient abundance level is highly personalised and influenced by the energy metabolism of the ecosystem that is reflected by its microbial composition ( http://www. CLINICALTRIALS gov , ID NCT NCT02920294). Video Abstract.
Collapse
Affiliation(s)
- Edoardo Zaccaria
- Host Microbe Interactomics Group, Wageningen University & Research, De Elst 1, 6708WD, Wageningen, The Netherlands
- Food Innovation and Health, Center for Healthy Eating and Food Innovation, Maastricht University, Venlo, 5911AA, The Netherlands
| | - Tim Klaassen
- Food Innovation and Health, Center for Healthy Eating and Food Innovation, Maastricht University, Venlo, 5911AA, The Netherlands
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center+, P.O. Box 5800, 6202AZ, Maastricht, The Netherlands
| | - Annick M E Alleleyn
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center+, P.O. Box 5800, 6202AZ, Maastricht, The Netherlands
| | - Jos Boekhorst
- Host Microbe Interactomics Group, Wageningen University & Research, De Elst 1, 6708WD, Wageningen, The Netherlands
| | - Tamara Smokvina
- Danone Nutricia Research, Av. De la Vauve, 91767, Palaiseau, France
| | - Michiel Kleerebezem
- Host Microbe Interactomics Group, Wageningen University & Research, De Elst 1, 6708WD, Wageningen, The Netherlands.
| | - Freddy J Troost
- Food Innovation and Health, Center for Healthy Eating and Food Innovation, Maastricht University, Venlo, 5911AA, The Netherlands
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center+, P.O. Box 5800, 6202AZ, Maastricht, The Netherlands
| |
Collapse
|
5
|
Otten BMJ, Sthijns MMJPE, Troost FJ. A Combination of Acetate, Propionate, and Butyrate Increases Glucose Uptake in C2C12 Myotubes. Nutrients 2023; 15:nu15040946. [PMID: 36839304 PMCID: PMC9967986 DOI: 10.3390/nu15040946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/09/2023] [Accepted: 02/11/2023] [Indexed: 02/16/2023] Open
Abstract
BACKGROUND Dietary fibers are subjected to saccharolytic fermentation by the gut microbiota, leading to the production of short chain fatty acids (SCFAs). SCFAs act as signaling molecules to different cells in the human body including skeletal muscle cells. The ability of SCFAs to induce multiple signaling pathways, involving nuclear erythroid 2-related factor 2 (Nrf2), may contribute to the redox balance, and thereby may be involved in glucose homeostasis. The aim of this study is to investigate whether SCFAs increase glucose uptake by upregulating the endogenous antioxidant glutathione (GSH) in C2C12 myotubes. METHODS C2C12 myotubes were exposed to 1, 5, or 20 mM of single (acetate, propionate, or butyrate) or mixtures of SCFAs for 24 h. Cytotoxicity, glucose uptake, and intracellular GSH levels were measured. RESULTS 20 mM of mixture but not separate SCFAs induced cytotoxicity. Exposure to a mixture of SCFAs at 5 mM increased glucose uptake in myotubes, while 20 mM of propionate, butyrate, and mixtures decreased glucose uptake. Exposure to single SCFAs increased GSH levels in myotubes; however, SCFAs did not prevent the menadione-induced decrease in glucose uptake in myotubes. CONCLUSIONS The effect of SCFAs on modulating glucose uptake in myotubes is not associated with the effect on endogenous GSH levels.
Collapse
|
6
|
Zaccaria E, Klaassen T, Alleleyn AM, Boekhorst J, Chervaux C, Smokvina T, Troost FJ, Kleerebezem M. L. rhamnosus CNCM I-3690 survival, adaptation, and small bowel microbiome impact in human. Gut Microbes 2023; 15:2244720. [PMID: 37589280 PMCID: PMC10438856 DOI: 10.1080/19490976.2023.2244720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/05/2023] [Accepted: 08/01/2023] [Indexed: 08/18/2023] Open
Abstract
Fermented foods and beverages are a significant source of dietary bacteria that enter the gastrointestinal (GI) tract. However, little is known about how these microbes survive and adapt to the small intestinal environment. Colony-forming units (CFU) enumeration and viability qPCR of Lacticaseibacillus rhamnosus CNCM I-3690 in the ileal effluent of 10 ileostomy subjects during 12-h post consumption of a dairy product fermented with this strain demonstrated the high level of survival of this strain during human small intestine passage. Metatranscriptome analyses revealed the in situ transcriptome of L. rhamnosus in the small intestine, which was contrasted with transcriptome data obtained from in vitro cultivation. These comparative analyses revealed substantial metabolic adaptations of L. rhamnosus during small intestine transit, including adjustments of carbohydrate metabolism, surface-protein expression, and translation machinery. The prominent presence of L. rhamnosus in the effluent samples did not elicit an appreciable effect on the composition of the endogenous small intestine microbiome, but significantly altered the ecosystem's overall activity profile, particularly of pathways associated with carbohydrate metabolism. Strikingly, two of the previously recognized gut-brain metabolic modules expressed in situ by L. rhamnosus (inositol degradation and glutamate synthesis II) are among the most dominantly enriched activities in the ecosystem's activity profile. This study establishes the survival capacity of L. rhamnosus in the human small intestine and highlights its functional adjustment in situ, which we postulate to play a role in the probiotic effects associated with this strain.
Collapse
Affiliation(s)
- Edoardo Zaccaria
- Host Microbe Interactomics Group, Wageningen University & Research, Wageningen, The Netherlands
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center+, Maastricht, The Netherlands
| | - Tim Klaassen
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center+, Maastricht, The Netherlands
- Food Innovation and Health, Department of Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Venlo, The Netherlands
| | - Annick M.E. Alleleyn
- Food Innovation and Health, Department of Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Venlo, The Netherlands
| | - Jos Boekhorst
- Host Microbe Interactomics Group, Wageningen University & Research, Wageningen, The Netherlands
| | | | - Tamara Smokvina
- Danone Nutricia Research, Centre Daniel Carasso, Palaiseau, France
| | - Freddy J. Troost
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center+, Maastricht, The Netherlands
| | - Michiel Kleerebezem
- Host Microbe Interactomics Group, Wageningen University & Research, Wageningen, The Netherlands
| |
Collapse
|
7
|
Imperatrice M, Cuijpers I, Troost FJ, Sthijns MMJPE. Hesperidin Functions as an Ergogenic Aid by Increasing Endothelial Function and Decreasing Exercise-Induced Oxidative Stress and Inflammation, Thereby Contributing to Improved Exercise Performance. Nutrients 2022; 14:nu14142955. [PMID: 35889917 PMCID: PMC9316530 DOI: 10.3390/nu14142955] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/12/2022] [Accepted: 07/15/2022] [Indexed: 02/06/2023] Open
Abstract
The regulation of blood flow to peripheral muscles is crucial for proper skeletal muscle functioning and exercise performance. During exercise, increased mitochondrial oxidative phosphorylation leads to increased electron leakage and consequently induces an increase in ROS formation, contributing to DNA, lipid, and protein damage. Moreover, exercise may increase blood- and intramuscular inflammatory factors leading to a deterioration in endurance performance. The aim of this review is to investigate the potential mechanisms through which the polyphenol hesperidin could lead to enhanced exercise performance, namely improved endothelial function, reduced exercise-induced oxidative stress, and inflammation. We selected in vivo RCTs, animal studies, and in vitro studies in which hesperidin, its aglycone form hesperetin, hesperetin-metabolites, or orange juice are supplemented at any dosage and where the parameters related to endothelial function, oxidative stress, and/or inflammation have been measured. The results collected in this review show that hesperidin improves endothelial function (via increased NO availability), inhibits ROS production, decreases production and plasma levels of pro-inflammatory markers, and improves anaerobic exercise outcomes (e.g., power, speed, energy). For elite and recreational athletes, hesperidin could be used as an ergogenic aid to enhance muscle recovery between training sessions, optimize oxygen and nutrient supplies to the muscles, and improve anaerobic performance.
Collapse
Affiliation(s)
- Maria Imperatrice
- BioActor BV, Gaetano Martinolaan 50, 6229 GS Maastricht, The Netherlands
- Correspondence: (M.I.); (I.C.)
| | - Iris Cuijpers
- Food Innovation and Health, Department of Human Biology, Maastricht University, 6200 MD Maastricht, The Netherlands; (F.J.T.); (M.M.J.P.E.S.)
- Correspondence: (M.I.); (I.C.)
| | - Freddy J. Troost
- Food Innovation and Health, Department of Human Biology, Maastricht University, 6200 MD Maastricht, The Netherlands; (F.J.T.); (M.M.J.P.E.S.)
| | - Mireille M. J. P. E. Sthijns
- Food Innovation and Health, Department of Human Biology, Maastricht University, 6200 MD Maastricht, The Netherlands; (F.J.T.); (M.M.J.P.E.S.)
| |
Collapse
|
8
|
Klaassen T, Vork L, Smeets FGM, Troost FJ, Kruimel JW, Leue C, Masclee AAM, Keszthelyi D. The Interplay Between Stress and Fullness in Patients With Functional Dyspepsia and Healthy Controls: An Exploratory Experience Sampling Method Study. Psychosom Med 2022; 84:306-312. [PMID: 34524263 DOI: 10.1097/psy.0000000000001012] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Fullness is a cardinal symptom in functional dyspepsia (FD). The use of real-time symptom assessment might provide more insight into factors, such as daily stress, that can influence fullness. Therefore, this study aimed to use the experience sampling method (a real-time, repeated-measurement method making use of repeated questionnaires available at random moments for a limited amount of time) to assess the association between stress and fullness in patients with FD and healthy controls (HCs). METHODS Thirty-five patients with FD (25 female, mean age = 44.7 years) and 34 HCs (24 female, mean age = 44.1 years) completed the experience sampling method (a maximum of 10 random moments per day) for 7 consecutive days. Stress and fullness were rated on an 11-point Numeric Rating Scale. Data between patients with FD and HCs were statistically compared using a Student samples t test and linear mixed-effects models with repeated measures (level 1) nested within participants (level 2). RESULTS Average fullness scores were 2.23 (standard error = 0.37) points higher in patients with FD compared with HCs (p < .001). Average stress scores were 1.37 (standard error = 0.30) points higher in patients with FD compared with HCs (p = .002).In FD, fullness scores increased with 0.14 for every 1-point increase in concurrent stress scores (p = .010). Fullness scores at t = 0 increased with 0.12 for every 1-point increase in stress scores at t = -1 (p = .019). T = 0 stress scores were not associated with change in t = -1 fullness scores. No associations between concurrent symptom scores were found for HCs. CONCLUSIONS Concurrent and preceding stress scores are positively associated with fullness scores in patients with FD, but not in HCs. These findings indicate that increased levels of stress may precede feelings of fullness in patients with FD. TRIAL REGISTRATION ClinicalTrials.gov identifier NCT04204421.
Collapse
Affiliation(s)
- Tim Klaassen
- From the Division of Gastroenterology-Hepatology, Department of Internal Medicine (Klaassen, Vork, Smeets, Troost, Kruimel, Masclee, Keszthelyi), School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht; Food Innovation and Health, Centre for Healthy Eating and Food Innovation (Klaassen, Troost), Maastricht University, Venlo; and Department of Psychiatry and Psychology (Leue), Maastricht University Medical Centre, Maastricht, the Netherlands
| | | | | | | | | | | | | | | |
Collapse
|
9
|
Beckers AB, Wilms E, Mujagic Z, Kajtár B, Csekő K, Weerts ZZRM, Vork L, Troost FJ, Kruimel JW, Conchillo JM, Helyes Z, Masclee AAM, Keszthelyi D, Jonkers DMAE. Age-Related Decrease in Abdominal Pain and Associated Structural- and Functional Mechanisms: An Exploratory Study in Healthy Individuals and Irritable Bowel Syndrome Patients. Front Pharmacol 2022; 12:806002. [PMID: 34975501 PMCID: PMC8716827 DOI: 10.3389/fphar.2021.806002] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 11/23/2021] [Indexed: 12/12/2022] Open
Abstract
Introduction: The world population is ageing, resulting in increased prevalence of age-related comorbidities and healthcare costs. Limited data are available on intestinal health in elderly populations. Structural and functional changes, including altered visceroperception, may lead to altered bowel habits and abdominal symptoms in healthy individuals and irritable bowel syndrome (IBS) patients. Our aim was to explore age-related changes in gastrointestinal symptoms and underlying mechanisms. Methods: In total, 780 subjects (IBS patients n = 463, healthy subjects n = 317) from two separate studies were included. Subjects were divided into different age groups ranging from young adult to elderly. Demographics and gastrointestinal symptom scores were collected from all participants using validated questionnaires. A subset of 233 IBS patients and 103 controls underwent a rectal barostat procedure to assess visceral hypersensitivity. Sigmoid biopsies were obtained from 10 healthy young adults and 10 healthy elderly. Expression of the visceral pain-associated receptors transient receptor potential (TRP) Ankyrin 1 (TRPA1) and Vanilloid 1 (TRPV1) genes were investigated by quantitative RT-PCR and immunofluorescence. Results: Both elderly IBS and healthy individuals showed significantly lower scores for abdominal pain (p < 0.001) and indigestion (p < 0.05) as compared to respective young adults. Visceral hypersensitivity was less common in elderly than young IBS patients (p < 0.001). Relative TRPA1 gene transcription, as well as TRPA1 and TRPV1 immunoreactivity were significantly lower in healthy elderly versus healthy young adults (p < 0.05). Conclusions: Our findings show an age-related decrease in abdominal pain perception. This may in part be related to decreased TRPA1 and/or TRPV1 receptor expression. Further studies are needed to reveal precise underlying mechanisms and the associations with intestinal health.
Collapse
Affiliation(s)
- Abraham B Beckers
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
| | - Ellen Wilms
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
| | - Zlatan Mujagic
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
| | - Béla Kajtár
- Department of Pathology, Clinical Centre, Medical School, University of Pecs, Pécs, Hungary
| | - Kata Csekő
- Department of Pharmacology and Pharmacotherapy, Medical School and Molecular Pharmacology Research Group, Szentágothai Research Centre, University of Pecs, Pécs, Hungary
| | - Zsa Zsa R M Weerts
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
| | - Lisa Vork
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
| | - Freddy J Troost
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
| | - Joanna W Kruimel
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
| | - José M Conchillo
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, Medical School and Molecular Pharmacology Research Group, Szentágothai Research Centre, University of Pecs, Pécs, Hungary.,PharmInVivo Ltd, Pécs, Hungary
| | - Ad A M Masclee
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
| | - Daniel Keszthelyi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
| | - Daisy M A E Jonkers
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
| |
Collapse
|
10
|
Ahles S, Cuijpers I, Hartgens F, Troost FJ. The Effect of a Citrus and Pomegranate Complex on Physical Fitness and Mental Well-Being in Healthy Elderly: A Randomized Placebo-Controlled Trial. J Nutr Health Aging 2022; 26:839-846. [PMID: 36156675 DOI: 10.1007/s12603-022-1834-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
OBJECTIVES This study investigates whether a citrus and pomegranate complex (CPC) improves physical fitness, mental well-being, and blood biomarkers for oxidative stress and endothelial function in healthy elderly. DESIGN A randomized placebo-controlled cross-over trial. PARTICIPANTS The study included 36 healthy elderly aged 60-75 years old. INTERVENTION AND MEASUREMENTS Participants received four weeks of CPC supplementation and performed the handgrip strength and senior fitness test. Quality of life (QOL) was assessed and blood samples were analyzed for oxidative stress and endothelial function markers. RESULTS After four weeks of CPC supplementation, handgrip strength significantly improved (p=0.019), compared to placebo. Moreover, the thinking, memory, learning, and concentration facets were improved (p=0.042), compared to placebo, and plasma malondialdehyde decreased, compared to placebo (p=0.033). The intervention did not affect senior fitness and the other QOL domains and blood parameters. CONCLUSION Four weeks of daily CPC supplementation significantly improves handgrip strength and self-evaluated measures of psychological function in healthy older adults. Further research should focus on mechanisms associated with physical performance.
Collapse
Affiliation(s)
- S Ahles
- Sanne Ahles, Department of Nutrition and Movement Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 6200 MD Maastricht, The Netherlands;
| | | | | | | |
Collapse
|
11
|
PH van Trijp M, Wilms E, Ríos-Morales M, Masclee AA, Brummer RJ, Witteman BJ, Troost FJ, Hooiveld GJ. Using naso- and oro-intestinal catheters in physiological research for intestinal delivery and sampling in vivo: practical and technical aspects to be considered. Am J Clin Nutr 2021; 114:843-861. [PMID: 34036315 PMCID: PMC8408849 DOI: 10.1093/ajcn/nqab149] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 04/09/2021] [Indexed: 01/19/2023] Open
Abstract
Intestinal catheters have been used for decades in human nutrition, physiology, pharmacokinetics, and gut microbiome research, facilitating the delivery of compounds directly into the intestinal lumen or the aspiration of intestinal fluids in human subjects. Such research provides insights about (local) dynamic metabolic and other intestinal luminal processes, but working with catheters might pose challenges to biomedical researchers and clinicians. Here, we provide an overview of practical and technical aspects of applying naso- and oro-intestinal catheters for delivery of compounds and sampling luminal fluids from the jejunum, ileum, and colon in vivo. The recent literature was extensively reviewed, and combined with experiences and insights we gained through our own clinical trials. We included 60 studies that involved a total of 720 healthy subjects and 42 patients. Most of the studies investigated multiple intestinal regions (24 studies), followed by studies investigating only the jejunum (21 studies), ileum (13 studies), or colon (2 studies). The ileum and colon used to be relatively inaccessible regions in vivo. Custom-made state-of-the-art catheters are available with numerous options for the design, such as multiple lumina, side holes, and inflatable balloons for catheter progression or isolation of intestinal segments. These allow for multiple controlled sampling and compound delivery options in different intestinal regions. Intestinal catheters were often used for delivery (23 studies), sampling (10 studies), or both (27 studies). Sampling speed decreased with increasing distance from the sampling syringe to the specific intestinal segment (i.e., speed highest in duodenum, lowest in ileum/colon). No serious adverse events were reported in the literature, and a dropout rate of around 10% was found for these types of studies. This review is highly relevant for researchers who are active in various research areas and want to expand their research with the use of intestinal catheters in humans in vivo.
Collapse
Affiliation(s)
- Mara PH van Trijp
- Division of Human Nutrition and Health, Wageningen University, Wageningen, The Netherlands
| | - Ellen Wilms
- Division Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Melany Ríos-Morales
- Laboratory of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Ad Am Masclee
- Division Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Robert Jan Brummer
- Nutrition-Gut-Brain Interactions Research Centre, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Ben Jm Witteman
- Division of Human Nutrition and Health, Wageningen University, Wageningen, The Netherlands,Hospital Gelderse Vallei, Department of Gastroenterology and Hepatology, Ede, The Netherlands
| | - Freddy J Troost
- Division Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands,Food Innovation and Health, Centre for Healthy Eating and Food Innovation, Maastricht University, Maastricht, The Netherlands
| | | |
Collapse
|
12
|
van Iersel LE, Stevens YR, Conchillo JM, Troost FJ. The effect of citrus flavonoid extract supplementation on anaerobic capacity in moderately trained athletes: a randomized controlled trial. J Int Soc Sports Nutr 2021; 18:2. [PMID: 33407631 PMCID: PMC7789554 DOI: 10.1186/s12970-020-00399-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 12/07/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Nutritional supplementation is commonly used by athletes to improve their exercise performance. Previous studies demonstrated that citrus flavonoid extract (CFE) supplementation may be an effective strategy to improve exercise performance in male athletes. Yet, no conclusive research has been performed to investigate the effect of chronic CFE supplementation on high-intensity exercise performance under anaerobic conditions. Therefore, the aim of the study was to assess whether CFE supplementation in daily dosages of 400 and 500 mg for a period of 4 and 8 weeks improves anaerobic exercise capacity. METHODS A randomized, double-blind, placebo controlled, parallel clinical study was conducted in 92 moderately trained healthy men and women. Subjects were randomized to receive 400 mg of CFE (n = 30), 500 mg of CFE (n = 31) or placebo (n = 31) daily, for 8 consecutive weeks. The Wingate anaerobic test was used to assess anaerobic exercise capacity and power output at baseline, after 4 weeks and after 8 weeks. RESULTS After 4 weeks supplementation, average power output significantly increased in the 400 mg group (Estimated difference [ED] = 38.2 W [18.0, 58.3]; p < 0.001; effect size [ES] = 0.27) and in the 500 mg group (ED = 21.2 W [0.91, 41.4]; p = 0.041; ES = 0.15) compared to placebo. The 5 s peak power output was also increased in the 400 mg group (ED = 53.6 [9.96, 97.2]; p = 0.017; ES = 0.25) after 4 weeks compared to placebo. After 8 weeks of supplementation, average power output was significantly improved in the group receiving 400 mg of CFE (ED = 31.6 [8.33, 54.8]; p = 0.008; ES = 0.22) compared to placebo. CONCLUSION These results demonstrate that CFE supplementation improved anaerobic capacity and peak power during high intensity exercise in moderately trained individuals. Further research is needed to identify the underlying mechanisms that are affected by CFE supplementation. TRIAL REGISTRATION ClinicalTrials.gov ( NCT03044444 ). Registered 7 February 2017.
Collapse
Affiliation(s)
- Lieke E van Iersel
- BioActor BV, Gaetano Martinolaan 85, 6229 GS, Maastricht, The Netherlands
| | - Yala R Stevens
- BioActor BV, Gaetano Martinolaan 85, 6229 GS, Maastricht, The Netherlands. .,Division Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands.
| | - Jose M Conchillo
- Division Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands
| | - Freddy J Troost
- Division Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands.,Department of Food Innovation and Health, Centre for Healthy Eating and Food Innovation, Maastricht University, 5911 BV, Venlo, The Netherlands
| |
Collapse
|
13
|
Wilms E, Troost FJ, Elizalde M, Winkens B, de Vos P, Mujagic Z, Jonkers DMAE, Masclee AAM. Intestinal barrier function is maintained with aging - a comprehensive study in healthy subjects and irritable bowel syndrome patients. Sci Rep 2020; 10:475. [PMID: 31949225 PMCID: PMC6965102 DOI: 10.1038/s41598-019-57106-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 12/19/2019] [Indexed: 01/12/2023] Open
Abstract
Animal studies have shown that intestinal barrier function is compromised with aging. We aimed to assess the effects of aging on intestinal barrier function in humans in vivo and ex vivo. In this cross-sectional study, healthy subjects and subjects with irritable bowel syndrome (IBS) of older (65–75 years) and young adult age (18–40 years) were compared. In vivo gastrointestinal site-specific permeability was assessed by a multi-sugar test, taking into account potential confounders. Sigmoid biopsies were collected from subgroups of healthy young adults and elderly for ex vivo Ussing chamber experiments, gene transcription of barrier-related genes and staining of junctional proteins. No significant differences between healthy young adults and elderly were found for small intestinal, colonic and whole gut permeability (P ≥ 0.142). In IBS patients, gastroduodenal and colonic permeability did not differ significantly (P ≥ 0.400), but small intestinal and whole gut permeability were higher in elderly versus young adults (P ≤ 0.009), mainly driven by the IBS-diarrhea subtype. Ussing chamber experiments with or without stressor (P ≥ 0.052), and relative expression of intestinal barrier-related genes (P ≥ 0.264) showed no significant differences between healthy elderly and young adults, as confirmed by immunofluorescent stainings. Overall, the functional capacity of the intestinal barrier is maintained in elderly.
Collapse
Affiliation(s)
- Ellen Wilms
- Division Gastroenterology-Hepatology, Department of Internal Medicine; NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands. .,Top Institute Food and Nutrition, Wageningen, The Netherlands.
| | - Freddy J Troost
- Division Gastroenterology-Hepatology, Department of Internal Medicine; NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands.,Food Innovation and Health Research, Centre for Healthy Eating and Food Innovation, Maastricht University, Venlo, The Netherlands
| | - Montserrat Elizalde
- Division Gastroenterology-Hepatology, Department of Internal Medicine; NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Bjorn Winkens
- Department of Methodology and Statistics; CAPHRI, Care and Public Health Research Institute, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Paul de Vos
- Top Institute Food and Nutrition, Wageningen, The Netherlands.,Department of Pathology and Medical Biology, section Immunoendocrinology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Zlatan Mujagic
- Division Gastroenterology-Hepatology, Department of Internal Medicine; NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Daisy M A E Jonkers
- Division Gastroenterology-Hepatology, Department of Internal Medicine; NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Ad A M Masclee
- Division Gastroenterology-Hepatology, Department of Internal Medicine; NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| |
Collapse
|
14
|
Klaassen T, Alleleyn AME, van Avesaat M, Troost FJ, Keszthelyi D, Masclee AAM. Intraintestinal Delivery of Tastants Using a Naso-Duodenal-Ileal Catheter Does Not Influence Food Intake or Satiety. Nutrients 2019; 11:nu11020472. [PMID: 30813412 PMCID: PMC6412712 DOI: 10.3390/nu11020472] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 02/20/2019] [Accepted: 02/20/2019] [Indexed: 12/21/2022] Open
Abstract
Intraduodenal activity of taste receptors reduces food intake. Taste receptors are expressed throughout the entire gastrointestinal tract. Currently, there are no data available on the effects of distal taste receptor activation. In this study, we investigate the effect of intraduodenal and/or intraileal activation of taste receptors on food intake and satiety. In a single-blind randomized crossover trial, fourteen participants were intubated with a naso-duodenal-ileal catheter and received four infusion regimens: duodenal placebo and ileal placebo (DPIP), duodenal tastants and ileal placebo (DTIP), duodenal placebo and ileal tastants (DPIT), duodenal tastants and ileal tastants (DTIT). Fifteen minutes after cessation of infusion, subjects received an ad libitum meal to measure food intake. Visual analog scale scores for satiety feelings were collected at regular intervals. No differences in food intake were observed between the various interventions (DPIP: 786.6 ± 79.2 Kcal, DTIP: 803.3 ± 69.0 Kcal, DPIT: 814.7 ± 77.3 Kcal, DTIT: 834.8 ± 59.2 Kcal, p = 0.59). No differences in satiety feelings were observed. Intestinal infusion of tastants using a naso-duodenal-ileal catheter did not influence food intake or satiety feelings. Possibly, the burden of the four-day naso-duodenal-ileal intubation masked a small effect that tastants might have on food intake and satiety.
Collapse
Affiliation(s)
- Tim Klaassen
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands.
- Food Innovation and Health, Center for Healthy Eating and Food Innovation, Maastricht University, 5911 AA Venlo, The Netherlands.
| | - Annick M E Alleleyn
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands.
| | - Mark van Avesaat
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands.
| | - Freddy J Troost
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands.
- Food Innovation and Health, Center for Healthy Eating and Food Innovation, Maastricht University, 5911 AA Venlo, The Netherlands.
| | - Daniel Keszthelyi
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands.
| | - Adrian A M Masclee
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands.
| |
Collapse
|
15
|
Alleleyn AME, van Avesaat M, Ripken D, Bleiel SB, Keszthelyi D, Wilms E, Troost FJ, Hendriks HFJ, Masclee AAM. The Effect of an Encapsulated Nutrient Mixture on Food Intake and Satiety: A Double-Blind Randomized Cross-Over Proof of Concept Study. Nutrients 2018; 10:nu10111787. [PMID: 30453597 PMCID: PMC6265922 DOI: 10.3390/nu10111787] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/10/2018] [Accepted: 11/14/2018] [Indexed: 02/07/2023] Open
Abstract
Activation of the intestinal brake by infusing nutrients into the distal small intestine with catheters inhibits food intake and enhances satiety. Encapsulation of macronutrients, which protects against digestion in the proximal gastrointestinal tract, can be a non-invasive alternative to activate this brake. In this study, we investigate the effect of oral ingestion of an encapsulated casein and sucrose mixture (active) targeting the distal small intestine versus a control product designed to be released in the stomach on food intake, satiety, and plasma glucose concentrations. Fifty-nine volunteers received the active and control product on two separate test days. Food intake was determined during an ad libitum meal 90 min after ingestion of the test product. Visual analogue scale scores for satiety and blood samples for glucose analysis were collected at regular intervals. Ingestion of the active product decreased food intake compared to the control product (655 kcal compared with 699 kcal, respectively, p < 0.05). The area under the curve (AUC) for hunger was decreased (p < 0.05) and AUC for satiety was increased (p < 0.01) after ingestion of the active product compared to the control product. Ingestion of an encapsulated protein-carbohydrate mixture resulted in inhibition of food intake compared to a non-encapsulated control product.
Collapse
Affiliation(s)
- Annick M E Alleleyn
- Top Institute of Food and Nutrition, P.O. Box 557, 6700 AN Wageningen, The Netherlands.
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands.
| | - Mark van Avesaat
- Top Institute of Food and Nutrition, P.O. Box 557, 6700 AN Wageningen, The Netherlands.
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands.
| | - Dina Ripken
- Top Institute of Food and Nutrition, P.O. Box 557, 6700 AN Wageningen, The Netherlands.
- The Netherlands Organization for Applied Scientific Research, TNO, P.O. Box 360, 3700 AJ Zeist, The Netherlands.
- Division of Human Nutrition, Wageningen University, P.O. Box 17, 6700 AA Wageningen, The Netherlands.
| | - Sinéad B Bleiel
- AnaBio Technologies LTD., Innovation Centre, Carrigtwohill, T45 RW24 Cork, Ireland.
| | - Daniel Keszthelyi
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands.
| | - Ellen Wilms
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands.
| | - Freddy J Troost
- Top Institute of Food and Nutrition, P.O. Box 557, 6700 AN Wageningen, The Netherlands.
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands.
- Food Innovation and Health, Centre of Healthy Eating and Food Innovation, Maastricht University, 5911 AA Venlo, The Netherlands.
| | - Henk F J Hendriks
- Top Institute of Food and Nutrition, P.O. Box 557, 6700 AN Wageningen, The Netherlands.
| | - Adrian A M Masclee
- Top Institute of Food and Nutrition, P.O. Box 557, 6700 AN Wageningen, The Netherlands.
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands.
| |
Collapse
|
16
|
van der Beek CM, Dejong CHC, Troost FJ, Masclee AAM, Lenaerts K. Role of short-chain fatty acids in colonic inflammation, carcinogenesis, and mucosal protection and healing. Nutr Rev 2017; 75:286-305. [PMID: 28402523 DOI: 10.1093/nutrit/nuw067] [Citation(s) in RCA: 205] [Impact Index Per Article: 29.3] [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: 12/31/2022] Open
Abstract
Short-chain fatty acids (SCFAs), mainly acetate, propionate, and butyrate, produced by microbial fermentation of undigested food substances are believed to play a beneficial role in human gut health. Short-chain fatty acids influence colonic health through various mechanisms. In vitro and ex vivo studies show that SCFAs have anti-inflammatory and anticarcinogenic effects, play an important role in maintaining metabolic homeostasis in colonocytes, and protect colonocytes from external harm. Animal studies have found substantial positive effects of SCFAs or dietary fiber on colonic disease, but convincing evidence in humans is lacking. Most human intervention trials have been conducted in the context of inflammatory bowel disease. Only a limited number of those trials are of high quality, showing little or no favorable effect of SCFA treatment over placebo. Opportunities for future research include exploring the use of combination therapies with anti-inflammatory drugs, prebiotics, or probiotics; the use of prodrugs in the setting of carcinogenesis; or the direct application of SCFAs to improve mucosal healing after colonic surgery.
Collapse
Affiliation(s)
- Christina M van der Beek
- C.M. van der Beek, C.H.C. Dejong, F.J. Troost, A.A.M. Masclee, and K. Lenaerts are with Top Institute Food and Nutrition, Wageningen, the Netherlands. C.M. van der Beek, C.H.C. Dejong, and K. Lenaerts are with the Department of Surgery, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, the Netherlands. C.H.C. Dejong is with the School for Oncology and Developmental Biology (GROW), Maastricht University Medical Center+, Maastricht, the Netherlands. F.J. Troost and A.A.M. Masclee are with the Department of Internal Medicine, Division of Gastroenterology-Hepatology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Cornelis H C Dejong
- C.M. van der Beek, C.H.C. Dejong, F.J. Troost, A.A.M. Masclee, and K. Lenaerts are with Top Institute Food and Nutrition, Wageningen, the Netherlands. C.M. van der Beek, C.H.C. Dejong, and K. Lenaerts are with the Department of Surgery, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, the Netherlands. C.H.C. Dejong is with the School for Oncology and Developmental Biology (GROW), Maastricht University Medical Center+, Maastricht, the Netherlands. F.J. Troost and A.A.M. Masclee are with the Department of Internal Medicine, Division of Gastroenterology-Hepatology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Freddy J Troost
- C.M. van der Beek, C.H.C. Dejong, F.J. Troost, A.A.M. Masclee, and K. Lenaerts are with Top Institute Food and Nutrition, Wageningen, the Netherlands. C.M. van der Beek, C.H.C. Dejong, and K. Lenaerts are with the Department of Surgery, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, the Netherlands. C.H.C. Dejong is with the School for Oncology and Developmental Biology (GROW), Maastricht University Medical Center+, Maastricht, the Netherlands. F.J. Troost and A.A.M. Masclee are with the Department of Internal Medicine, Division of Gastroenterology-Hepatology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Ad A M Masclee
- C.M. van der Beek, C.H.C. Dejong, F.J. Troost, A.A.M. Masclee, and K. Lenaerts are with Top Institute Food and Nutrition, Wageningen, the Netherlands. C.M. van der Beek, C.H.C. Dejong, and K. Lenaerts are with the Department of Surgery, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, the Netherlands. C.H.C. Dejong is with the School for Oncology and Developmental Biology (GROW), Maastricht University Medical Center+, Maastricht, the Netherlands. F.J. Troost and A.A.M. Masclee are with the Department of Internal Medicine, Division of Gastroenterology-Hepatology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Kaatje Lenaerts
- C.M. van der Beek, C.H.C. Dejong, F.J. Troost, A.A.M. Masclee, and K. Lenaerts are with Top Institute Food and Nutrition, Wageningen, the Netherlands. C.M. van der Beek, C.H.C. Dejong, and K. Lenaerts are with the Department of Surgery, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, the Netherlands. C.H.C. Dejong is with the School for Oncology and Developmental Biology (GROW), Maastricht University Medical Center+, Maastricht, the Netherlands. F.J. Troost and A.A.M. Masclee are with the Department of Internal Medicine, Division of Gastroenterology-Hepatology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, the Netherlands
| |
Collapse
|
17
|
de Vos P, Mujagic Z, de Haan BJ, Siezen RJ, Bron PA, Meijerink M, Wells JM, Masclee AAM, Boekschoten MV, Faas MM, Troost FJ. Lactobacillus plantarum Strains Can Enhance Human Mucosal and Systemic Immunity and Prevent Non-steroidal Anti-inflammatory Drug Induced Reduction in T Regulatory Cells. Front Immunol 2017; 8:1000. [PMID: 28878772 PMCID: PMC5572349 DOI: 10.3389/fimmu.2017.01000] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 08/04/2017] [Indexed: 12/28/2022] Open
Abstract
Orally ingested bacteria interact with intestinal mucosa and may impact immunity. However, insights in mechanisms involved are limited. In this randomized placebo-controlled cross-over trial, healthy human subjects were given Lactobacillus plantarum supplementation (strain TIFN101, CIP104448, or WCFS1) or placebo for 7 days. To determine whether L. plantarum can enhance immune response, we compared the effects of three stains on systemic and gut mucosal immunity, by among others assessing memory responses against tetanus toxoid (TT)-antigen, and mucosal gene transcription, in human volunteers during induction of mild immune stressor in the intestine, by giving a commonly used enteropathic drug, indomethacin [non-steroidal anti-inflammatory drug (NSAID)]. Systemic effects of the interventions were studies in peripheral blood samples. NSAID was found to induce a reduction in serum CD4+/Foxp3 regulatory cells, which was prevented by L. plantarum TIFN101. T-cell polarization experiments showed L. plantarum TIFN101 to enhance responses against TT-antigen, which indicates stimulation of memory responses by this strain. Cell extracts of the specific L. plantarum strains provoked responses after WCFS1 and TIFN101 consumption, indicating stimulation of immune responses against the specific bacteria. Mucosal immunomodulatory effects were studied in duodenal biopsies. In small intestinal mucosa, TIFN101 upregulated genes associated with maintenance of T- and B-cell function and antigen presentation. Furthermore, L. plantarum TIFN101 and WCFS1 downregulated immunological pathways involved in antigen presentation and shared downregulation of snoRNAs, which may suggest cellular destabilization, but may also be an indicator of tissue repair. Full sequencing of the L. plantarum strains revealed possible gene clusters that might be responsible for the differential biological effects of the bacteria on host immunity. In conclusion, the impact of oral consumption L. plantarum on host immunity is strain dependent and involves responses against bacterial cell components. Some strains may enhance specific responses against pathogens by enhancing antigen presentation and leukocyte maintenance in mucosa. In future studies and clinical settings, caution should be taken in selecting beneficial bacteria as closely related strains can have different effects. Our data show that specific bacterial strains can prevent immune stress induced by commonly consumed painkillers such as NSAID and can have enhancing beneficial effects on immunity of consumers by stimulating antigen presentation and memory responses.
Collapse
Affiliation(s)
- Paul de Vos
- Top Institute Food and Nutrition, Wageningen, Netherlands.,Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Zlatan Mujagic
- Top Institute Food and Nutrition, Wageningen, Netherlands.,Division of Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM School for Nutrition, and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, Netherlands
| | - Bart J de Haan
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Roland J Siezen
- Top Institute Food and Nutrition, Wageningen, Netherlands.,Centre for Molecular and Biomolecular Informatics, Radboud University Medical Centre, Nijmegen, Netherlands.,Microbial Bioinformatics, Ede, Netherlands
| | - Peter A Bron
- Top Institute Food and Nutrition, Wageningen, Netherlands.,NIZO Food Research, Ede, Netherlands
| | - Marjolein Meijerink
- Top Institute Food and Nutrition, Wageningen, Netherlands.,Department of Host-Microbe Interactomics, Wageningen University, Wageningen, Netherlands
| | - Jerry M Wells
- Top Institute Food and Nutrition, Wageningen, Netherlands.,Department of Host-Microbe Interactomics, Wageningen University, Wageningen, Netherlands
| | - Ad A M Masclee
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM School for Nutrition, and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, Netherlands
| | - Mark V Boekschoten
- Top Institute Food and Nutrition, Wageningen, Netherlands.,Department of Human Nutrition, Wageningen University, Wageningen, Netherlands
| | - Marijke M Faas
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Freddy J Troost
- Top Institute Food and Nutrition, Wageningen, Netherlands.,Division of Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM School for Nutrition, and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, Netherlands
| |
Collapse
|
18
|
Corstens MN, Berton-Carabin CC, Elichiry-Ortiz PT, Hol K, Troost FJ, Masclee AA, Schroën K. Emulsion-alginate beads designed to control in vitro intestinal lipolysis: Towards appetite control. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.05.003] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
|
19
|
Corstens MN, Berton-Carabin CC, Kester A, Fokkink R, van den Broek JM, de Vries R, Troost FJ, Masclee AA, Schroën K. Destabilization of multilayered interfaces in digestive conditions limits their ability to prevent lipolysis in emulsions. Food Structure 2017. [DOI: 10.1016/j.foostr.2016.07.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
20
|
Salden BN, Troost FJ, Wilms E, Truchado P, Vilchez-Vargas R, Pieper DH, Jáuregui R, Marzorati M, van de Wiele T, Possemiers S, Masclee AA. Reinforcement of intestinal epithelial barrier by arabinoxylans in overweight and obese subjects: A randomized controlled trial: Arabinoxylans in gut barrier. Clin Nutr 2017; 37:471-480. [PMID: 28214040 DOI: 10.1016/j.clnu.2017.01.024] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 11/21/2016] [Accepted: 01/26/2017] [Indexed: 11/28/2022]
Abstract
BACKGROUND & AIMS Obesity and metabolic diseases are associated with alterations in microbial composition and impaired gut barrier. Previous in vitro and animal studies have shown that arabinoxylans (AX) have the potential to modulate gut microbiota and gut barrier and therefore could have a protective role. Primary aim of the study was to investigate the effect of AX on intestinal permeability. Secondary aims included the effect of AX on gene transcription and protein expression of tight junctions (TJ), intestinal microbiota composition and activity, immune response and metabolic markers in overweight and obese individuals. METHODS In this randomized, double-blind, placebo-controlled trial, 47 overweight subjects were randomly assigned to groups receiving 7.5 g/d AX (n = 16), 15 g/d AX (n = 17) or 15 g/d placebo (n = 14) for 6 wks. Intestinal permeability was investigated using a multi-sugar test. Sigmoid colon tissue was obtained from a subgroup (n = 26) for analyzing gene transcription and mucosal expression of TJ proteins. Fecal samples were collected to assess microbial composition and activity. Furthermore, the production of cytokines by stimulated peripheral blood mononuclear cells (PBMCs) was examined. Blood was also sampled for measuring metabolic markers. RESULTS No significant changes in gastrointestinal permeability and TJ protein expression were observed after 6 wks AX supplementation compared to placebo. However, gene transcription of occludin was upregulated in the 7.5 g AX group, and transcription of claudin-3 and claudin-4 were upregulated in the 15 g AX group compared to placebo. Furthermore, fecal microbiota diversity was decreased after 6 wks 15 g AX treatment, but no change in relative abundance of dominant phyla was observed. AX intake significantly decreased fecal pH and increased fecal concentrations of total SCFAs, acetate, propionate and butyrate, compared to placebo. Additionally, a decreased TNFα production by stimulated PBMCs was observed after 15 g AX treatment. No changes in metabolic markers were detected. CONCLUSIONS Regular consumption of AX resulted in a more beneficial fermentation profile in overweight and obese individuals. Further studies are required to assess whether such fermentation profile will translate into improved gut barrier function and immune health. The trial has been registered at ClinicalTrials.gov with study ID number NCT01877044.
Collapse
Affiliation(s)
- Bouke N Salden
- Department of Internal Medicine, Division of Gastroenterology-Hepatology, School of Nutrition & Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, The Netherlands.
| | - Freddy J Troost
- Department of Internal Medicine, Division of Gastroenterology-Hepatology, School of Nutrition & Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Ellen Wilms
- Department of Internal Medicine, Division of Gastroenterology-Hepatology, School of Nutrition & Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Pilar Truchado
- Laboratory of Microbial Ecology and Technology, Ghent University, Ghent, Belgium
| | - Ramiro Vilchez-Vargas
- Department of Gastroenterology, Hepatology and Infection Diseases, Otto von Guericke University, Magdeburg, Germany
| | - Dietmar H Pieper
- Microbial Interactions and Processes Research Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Ruy Jáuregui
- Microbial Interactions and Processes Research Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Massimo Marzorati
- Laboratory of Microbial Ecology and Technology, Ghent University, Ghent, Belgium
| | - Tom van de Wiele
- Laboratory of Microbial Ecology and Technology, Ghent University, Ghent, Belgium
| | - Sam Possemiers
- Laboratory of Microbial Ecology and Technology, Ghent University, Ghent, Belgium
| | - Ad A Masclee
- Department of Internal Medicine, Division of Gastroenterology-Hepatology, School of Nutrition & Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, The Netherlands
| |
Collapse
|
21
|
Salden BN, Troost FJ, de Groot E, Stevens YR, Garcés-Rimón M, Possemiers S, Winkens B, Masclee AA. Randomized clinical trial on the efficacy of hesperidin 2S on validated cardiovascular biomarkers in healthy overweight individuals. Am J Clin Nutr 2016; 104:1523-1533. [PMID: 27797708 DOI: 10.3945/ajcn.116.136960] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 09/19/2016] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Endothelial dysfunction (ED) is involved in the development of atherosclerosis. Hesperidin, a citrus flavonoid with antioxidant and other biological properties, potentially exerts beneficial effects on endothelial function (EF). OBJECTIVE We investigated the effect of hesperidin 2S supplementation on EF in overweight individuals. DESIGN This was a randomized, double-blind, placebo-controlled study in which 68 individuals were randomly assigned to receive hesperidin 2S (450 mg/d) or a placebo for 6 wk. At baseline and after 6 wk of intervention, flow-mediated dilation (FMD), soluble vascular adhesion molecule-1 (sVCAM-1), soluble intracellular adhesion molecule-1 (sICAM-1), soluble P-selectin (sP-selectin), systolic blood pressure (SBP), and diastolic blood pressure (DBP) were assessed. Acute, reversible ED was induced by intake of a high-fat meal (HFM). A second FMD scan was performed 2 h postprandially, and adhesion molecules were assessed 2 and 4 h postprandially. An additional exploratory analysis was performed in subjects with baseline FMD ≥3%. RESULTS No significant change in fasting or postprandial FMD was observed after 6 wk of hesperidin intake compared with placebo intake. However, there was a trend for a reduction of sVCAM-1, sICAM-1, sP-selectin, SBP, and DBP after 6 wk of hesperidin treatment. In the FMD ≥3% group, hesperidin protected individuals from postprandial ED (P = 0.050) and significantly downregulated sVCAM-1 and sICAM-1 (all P ≤ 0.030). The results reported in the current article were not adjusted for multiplicity. CONCLUSIONS Six weeks of consumption of hesperidin 2S did not improve basal or postprandial FMD in our total study population. There was a tendency toward a reduction of adhesion molecules and a decrease in SBP and DBP. Further exploratory analyses revealed that, in subjects with baseline FMD ≥3%, hesperidin 2S improved ED after an HFM and reduced adhesion molecules. These results indicate the cardiovascular health benefits of hesperidin 2S in overweight and obese individuals with a relatively healthy endothelium. This trial was registered at clinicaltrials.gov as NCT02228291.
Collapse
Affiliation(s)
- Bouke N Salden
- Department of Internal Medicine, Division of Gastroenterology-Hepatology, School of Nutrition and Translational Research in Metabolism, and
| | - Freddy J Troost
- Department of Internal Medicine, Division of Gastroenterology-Hepatology, School of Nutrition and Translational Research in Metabolism, and
| | - Eric de Groot
- Imagelabonline & Cardiovascular, Eindhoven and Lunteren, Netherlands.,Clinical Epidemiology, Biostatistics and Bioinformatics, Academic Medical Center, Amsterdam, Netherlands
| | | | | | - Sam Possemiers
- Laboratory of Microbial Ecology and Technology, Ghent University, Ghent, Belgium
| | - Bjorn Winkens
- Department of Methodology and Statistics, School for Public Health and Primary Care, Maastricht University Medical Center, Maastricht, Netherlands
| | - Ad A Masclee
- Department of Internal Medicine, Division of Gastroenterology-Hepatology, School of Nutrition and Translational Research in Metabolism, and
| |
Collapse
|
22
|
van Avesaat M, Ripken D, Hendriks HFJ, Masclee AAM, Troost FJ. Small intestinal protein infusion in humans: evidence for a location-specific gradient in intestinal feedback on food intake and GI peptide release. Int J Obes (Lond) 2016; 41:217-224. [PMID: 27811949 DOI: 10.1038/ijo.2016.196] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Revised: 10/13/2016] [Accepted: 10/16/2016] [Indexed: 02/06/2023]
Abstract
BACKGROUND Protein infusion in the small intestine results in intestinal brake activation: a negative feedback mechanism that may be mediated by the release of gastrointestinal peptides resulting in a reduction in food intake. It has been proposed that duodenum, jejunum and ileum may respond differently to infused proteins. OBJECTIVE To investigate differences in ad libitum food intake, feelings of hunger and satiety and the systemic levels of cholecystokinin (CCK), glucagon-like peptide-1 (GLP-1), peptide YY (PYY), glucose and insulin after intraduodenal, intrajejunal and intraileal protein infusion. METHODS Fourteen subjects (four male, mean age: 23±2.1 years, mean body mass index: 21.6±1.8 kg m-2) were intubated with a naso-ileal catheter in this double-blind, randomized, placebo-controlled crossover study. Test days (four in total, executed on consecutive days) started with the ingestion of a standardized breakfast, followed by the infusion of 15 g of protein in the duodenum, jejunum or ileum over a period of 60 min. Food intake was measured by offering an ad libitum meal and Visual Analogue Scale (VAS) scores were used to assess feelings of hunger and satiety. Blood samples were drawn at regular intervals for CCK, GLP-1, PYY, glucose and insulin analyses. RESULTS Intraileal protein infusion decreased ad libitum food intake compared with both intraduodenal and placebo infusion (ileum: 628.5±63 kcal vs duodenum: 733.6±50 kcal, P<0.01 and placebo: 712.2±53 kcal, P<0.05). GLP-1 concentrations were increased after ileal infusion compared with jejunal and placebo infusion, whereas CCK concentrations were only increased after intraileal protein infusion compared with placebo. None of the treatments affected VAS scores for hunger and satiety nor plasma concentrations of PYY and glucose. CONCLUSIONS Protein infusion into the ileum decreases food intake during the next meal compared with intraduodenal infusion, whereas it increases systemic levels of GLP-1 compared with protein infusion into the jejunum and placebo respectively.
Collapse
Affiliation(s)
- M van Avesaat
- Top Institute Food and Nutrition, Wageningen, The Netherlands.,Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center, Maastricht, The Netherlands
| | - D Ripken
- Top Institute Food and Nutrition, Wageningen, The Netherlands.,The Netherlands Organization for Applied Scientific Research, TNO, Zeist, The Netherlands.,Division of Human Nutrition, Wageningen University, Wageningen, The Netherlands
| | - H F J Hendriks
- Top Institute Food and Nutrition, Wageningen, The Netherlands
| | - A A M Masclee
- Top Institute Food and Nutrition, Wageningen, The Netherlands.,Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center, Maastricht, The Netherlands
| | - F J Troost
- Top Institute Food and Nutrition, Wageningen, The Netherlands.,Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center, Maastricht, The Netherlands
| |
Collapse
|
23
|
van Avesaat M, Troost FJ, Ripken D, Hendriks HFJ, Masclee AAM. Reply to M Mehrdad. Am J Clin Nutr 2016; 103:1188-9. [PMID: 27037366 DOI: 10.3945/ajcn.115.129627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Mark van Avesaat
- From the Top Institute of Food and Nutrition, Wageningen, Netherlands (MvA, e-mail: ; FJT, DR, HFJH, and AAMM); Division of Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM, Maastricht University Medical Center, Maastricht, Netherlands (MvA, FJT, and AAMM); The Netherlands Organization for Applied Scientific Research, TNO, Zeist, Netherlands (DR); and Division of Human Nutrition, Wageningen University, Wageningen, Netherlands (DR)
| | - Freddy J Troost
- From the Top Institute of Food and Nutrition, Wageningen, Netherlands (MvA, e-mail: ; FJT, DR, HFJH, and AAMM); Division of Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM, Maastricht University Medical Center, Maastricht, Netherlands (MvA, FJT, and AAMM); The Netherlands Organization for Applied Scientific Research, TNO, Zeist, Netherlands (DR); and Division of Human Nutrition, Wageningen University, Wageningen, Netherlands (DR)
| | - Dina Ripken
- From the Top Institute of Food and Nutrition, Wageningen, Netherlands (MvA, e-mail: ; FJT, DR, HFJH, and AAMM); Division of Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM, Maastricht University Medical Center, Maastricht, Netherlands (MvA, FJT, and AAMM); The Netherlands Organization for Applied Scientific Research, TNO, Zeist, Netherlands (DR); and Division of Human Nutrition, Wageningen University, Wageningen, Netherlands (DR)
| | - Henk F J Hendriks
- From the Top Institute of Food and Nutrition, Wageningen, Netherlands (MvA, e-mail: ; FJT, DR, HFJH, and AAMM); Division of Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM, Maastricht University Medical Center, Maastricht, Netherlands (MvA, FJT, and AAMM); The Netherlands Organization for Applied Scientific Research, TNO, Zeist, Netherlands (DR); and Division of Human Nutrition, Wageningen University, Wageningen, Netherlands (DR)
| | - Ad A M Masclee
- From the Top Institute of Food and Nutrition, Wageningen, Netherlands (MvA, e-mail: ; FJT, DR, HFJH, and AAMM); Division of Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM, Maastricht University Medical Center, Maastricht, Netherlands (MvA, FJT, and AAMM); The Netherlands Organization for Applied Scientific Research, TNO, Zeist, Netherlands (DR); and Division of Human Nutrition, Wageningen University, Wageningen, Netherlands (DR)
| |
Collapse
|
24
|
Alleleyn AME, van Avesaat M, Troost FJ, Masclee AAM. Gastrointestinal Nutrient Infusion Site and Eating Behavior: Evidence for A Proximal to Distal Gradient within the Small Intestine? Nutrients 2016; 8:117. [PMID: 26927170 PMCID: PMC4808847 DOI: 10.3390/nu8030117] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 02/16/2016] [Accepted: 02/19/2016] [Indexed: 12/23/2022] Open
Abstract
The rapidly increasing prevalence of overweight and obesity demands new strategies focusing on prevention and treatment of this significant health care problem. In the search for new and effective therapeutic modalities for overweight subjects, the gastrointestinal (GI) tract is increasingly considered as an attractive target for medical and food-based strategies. The entry of nutrients into the small intestine activates so-called intestinal "brakes", negative feedback mechanisms that influence not only functions of more proximal parts of the GI tract but also satiety and food intake. Recent evidence suggests that all three macronutrients (protein, fat, and carbohydrates) are able to activate the intestinal brake, although to a different extent and by different mechanisms of action. This review provides a detailed overview of the current evidence for intestinal brake activation of the three macronutrients and their effects on GI function, satiety, and food intake. In addition, these effects appear to depend on region and length of infusion in the small intestine. A recommendation for a therapeutic approach is provided, based on the observed differences between intestinal brake activation.
Collapse
Affiliation(s)
- Annick M E Alleleyn
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands.
| | - Mark van Avesaat
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands.
- Top Institute of Food and Nutrition, 6700 AN Wageningen, The Netherlands.
| | - Freddy J Troost
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands.
- Top Institute of Food and Nutrition, 6700 AN Wageningen, The Netherlands.
| | - Adrian A M Masclee
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands.
- Top Institute of Food and Nutrition, 6700 AN Wageningen, The Netherlands.
| |
Collapse
|
25
|
van Avesaat M, Troost FJ, Westerterp-Plantenga MS, Helyes Z, Le Roux CW, Dekker J, Masclee AA, Keszthelyi D. Capsaicin-induced satiety is associated with gastrointestinal distress but not with the release of satiety hormones. Am J Clin Nutr 2016; 103:305-13. [PMID: 26718419 DOI: 10.3945/ajcn.115.123414] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Accepted: 11/11/2015] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Capsaicin, which is the major pungent principle in chili peppers, is able to induce satiety and reduce caloric intake. The exact mechanism behind this satiating effect is still unknown. We hypothesized that capsaicin induces satiety through the release of gastrointestinal peptides, such as glucagon-like peptide-1 (GLP-1) and peptide YY (PYY), from enteroendocrine cells in the small intestine. OBJECTIVE We investigate the effects of an intraduodenal capsaicin infusion (1.5 mg pure capsaicin) in healthy volunteers on hunger, satiety, and gastrointestinal symptoms and the release of GLP-1 and PYY. DESIGN Thirteen participants (7 women) [mean ± SEM age: 21.5 ± 0.6 y; body mass index (in kg/m(2)): 22.8 ± 0.6] participated in this single-blind, randomized, placebo-controlled crossover study with 2 different treatments. During test days, an intraduodenal infusion of either capsaicin or a placebo (physiologic saline) was performed with the use of a nasoduodenal catheter over a period of 30 min. Visual analog scale scores were used to measure hunger, satiety, and gastrointestinal symptoms. Blood samples were drawn at regular intervals for GLP-1 and PYY. Gallbladder volumes were measured with the use of real-time ultrasonography. RESULTS The intraduodenal capsaicin infusion significantly increased satiety (P-treatment effect < 0.05) but also resulted in an increase in the gastrointestinal symptoms pain (P-treatment × time interaction < 0.0005), burning sensation (P-treatment × time interaction < 0.0001), nausea (P-treatment × time interaction < 0.05), and bloating (P-treatment × time interaction < 0.001) compared with the effects of the placebo infusion. Satiety scores had a positive correlation with all gastrointestinal symptoms. No differences in GLP-1 and PYY concentrations and gallbladder volumes were observed after the capsaicin infusion compared with after the placebo infusion. CONCLUSIONS An intraduodenal infusion of capsaicin significantly increases satiety but does not affect plasma concentrations of GLP-1 and PYY. Rather, the effect on satiety seems related to gastrointestinal stress as shown by the associations with pain, burning sensation, nausea, and bloating scores. This trial was registered at clinicaltrials.gov as NCT01667523.
Collapse
Affiliation(s)
- Mark van Avesaat
- Top Institute Food and Nutrition, Wageningen, Netherlands; Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center, Maastricht, Netherlands
| | - Freddy J Troost
- Top Institute Food and Nutrition, Wageningen, Netherlands; Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center, Maastricht, Netherlands
| | | | - Zsuzsanna Helyes
- János Szentágothai Research Center & Department of Pharmacology and Pharmacotherapy, School of Medicine, Hungarian Brain Research Program B, Chronic Pain Research Group, University of Pécs, Pécs, Hungary; and
| | - Carel W Le Roux
- Diabetes Complications Research Centre, Conway Institute, University College Dublin, Dublin, Ireland
| | - Jan Dekker
- Top Institute Food and Nutrition, Wageningen, Netherlands
| | - Adrian Am Masclee
- Top Institute Food and Nutrition, Wageningen, Netherlands; Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center, Maastricht, Netherlands
| | - Daniel Keszthelyi
- Top Institute Food and Nutrition, Wageningen, Netherlands; Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center, Maastricht, Netherlands;
| |
Collapse
|
26
|
Ripken D, van Avesaat M, Troost FJ, Masclee AA, Witkamp RF, Hendriks HF. Intraileal casein infusion increases plasma concentrations of amino acids in humans: A randomized cross over trial. Clin Nutr 2016; 36:143-149. [PMID: 26872548 DOI: 10.1016/j.clnu.2016.01.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 12/02/2015] [Accepted: 01/21/2016] [Indexed: 12/16/2022]
Abstract
BACKGROUND Activation of the ileal brake by casein induces satiety signals and reduces energy intake. However, adverse effects of intraileal casein administration have not been studied before. These adverse effects may include impaired amino acid digestion, absorption and immune activation. OBJECTIVE To investigate the effects of intraileal infusion of native casein on plasma amino acid appearance, immune activation and gastrointestinal (GI) symptoms. DESIGN A randomized single-blind cross over study was performed in 13 healthy subjects (6 male; mean age 26 ± 2.9 years; mean body mass index 22.8 ± 0.4 kg/m-2), who were intubated with a naso-ileal feeding catheter. Thirty minutes after intake of a standardized breakfast, participants received an ileal infusion, containing either control (C) consisting of saline, a low-dose (17.2 kcal) casein (LP) or a high-dose (51.7 kcal) of casein (HP) over a period of 90 min. Blood samples were collected for analysis of amino acids (AAs), C-reactive protein (CRP), pro-inflammatory cytokines and oxylipins at regular intervals. Furthermore, GI symptom questionnaires were collected before, during and after ileal infusion. RESULTS None of the subjects reported any GI symptoms before, during or after ileal infusion of C, LP and HP. Plasma concentrations of all AAs analyzed were significantly increased after infusion of HP as compared to C (p < 0.001), and most AAs were increased after infusion of LP (p < 0.001). In total, 12.49 ± 1.73 and 3.18 ± 0.87 g AAs were found in plasma after intraileal infusion of HP and LP, corresponding to 93 ± 13% (HP) and 72 ± 20% (LP) of AAs infused as casein, respectively. Ileal casein infusion did not affect plasma concentrations of CRP, IL-6, IL-8, IL-1β and TNF-α. Infusion of HP resulted in a decreased concentration of 11,12-dihydroxyeicosatrienoic acid whereas none of the other oxylipins analyzed were affected. CONCLUSIONS A single intraileal infusion of native casein results in a concentration and time dependent increase of AAs in plasma, suggesting an effective digestion and absorption of AAs present in casein. Also, ileal infusion did not result in immune activation nor in GI symptoms. CLINICALTRIALS.GOV: NCT01509469.
Collapse
Affiliation(s)
- Dina Ripken
- Top Institute Food and Nutrition, Wageningen, The Netherlands; The Netherlands Organization for Applied Scientific Research, TNO, Zeist, The Netherlands; Division of Human Nutrition, Wageningen University, Wageningen, The Netherlands.
| | - Mark van Avesaat
- Top Institute Food and Nutrition, Wageningen, The Netherlands; Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center, Maastricht, The Netherlands
| | - Freddy J Troost
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center, Maastricht, The Netherlands
| | - Ad A Masclee
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center, Maastricht, The Netherlands
| | - Renger F Witkamp
- Division of Human Nutrition, Wageningen University, Wageningen, The Netherlands
| | - Henk F Hendriks
- Top Institute Food and Nutrition, Wageningen, The Netherlands
| |
Collapse
|
27
|
Salden BN, Montserrat V, Troost FJ, Bruins MJ, Edens L, Bartholomé R, Haenen GR, Winkens B, Koning F, Masclee AA. Letter: gluten digestion in the stomach and duodenum by Aspergillus niger-derived enzyme - things to ponder. Authors' reply. Aliment Pharmacol Ther 2015; 42:946-7. [PMID: 26331568 DOI: 10.1111/apt.13382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Affiliation(s)
- B N Salden
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM, Maastricht University Medical Center (MUMC+), Maastricht, The Netherlands.
| | - V Montserrat
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre (LUMC), Leiden, The Netherlands
| | - F J Troost
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM, Maastricht University Medical Center (MUMC+), Maastricht, The Netherlands
| | - M J Bruins
- DSM Biotechnology Centre, Delft, The Netherlands
| | - L Edens
- DSM Biotechnology Centre, Delft, The Netherlands
| | - R Bartholomé
- Department of Pharmacology and Toxicology, CARIM, Maastricht University, Maastricht, The Netherlands
| | - G R Haenen
- Department of Pharmacology and Toxicology, CARIM, Maastricht University, Maastricht, The Netherlands
| | - B Winkens
- Department of Methodology and Statistics, CAPHRI, Maastricht University Medical Center (MUMC+), Maastricht, The Netherlands
| | - F Koning
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre (LUMC), Leiden, The Netherlands
| | - A A Masclee
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM, Maastricht University Medical Center (MUMC+), Maastricht, The Netherlands
| |
Collapse
|
28
|
van Avesaat M, Troost FJ, Ripken D, Peters J, Hendriks HF, Masclee AA. Intraduodenal infusion of a combination of tastants decreases food intake in humans. Am J Clin Nutr 2015; 102:729-35. [PMID: 26289437 DOI: 10.3945/ajcn.115.113266] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Accepted: 07/20/2015] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Taste receptors are expressed not only in taste buds but also in the gastrointestinal tract. It has been hypothesized that these receptors may play a role in satiety and food intake. OBJECTIVE This study investigated the effect of intraduodenal tastant infusions (bitter, sweet, and umami) on food intake, hunger and fullness, gastrointestinal symptoms, and gastrointestinal peptide release. DESIGN Fifteen healthy volunteers [6 male; mean ± SEM age: 23.9 ± 2.0 y; mean ± SEM body mass index (in kg/m(2)): 22.4 ± 0.3] received 5 treatments in a double-blind, randomized, placebo-controlled crossover design. Test days started with the insertion of a nasoduodenal catheter followed by a standardized liquid breakfast. Participants received an intraduodenal infusion 150 min after breakfast, containing quinine (bitter), rebaudioside A (sweet), monosodium glutamate (umami), a combination of the 3 tastants, or placebo (tap water) over a period of 60 min. Food intake was measured during an ad libitum meal, and visual analog scales were used to monitor gastrointestinal complaints and hunger and fullness scores. Blood samples were drawn at regular intervals for cholecystokinin, glucagon-like peptide 1 (GLP-1), and peptide YY (PYY) analysis. RESULTS Infusion of the combination of tastants substantially decreased food intake (422 ± 97 compared with 486 ± 104 kcal for placebo, P < 0.05), whereas both a combination of tastants and umami decreased hunger scores compared with placebo. No change in cholecystokinin, GLP-1, or PYY concentrations was observed during the infusions. Intraduodenal infusions of the tastants did not result in gastrointestinal symptoms. CONCLUSIONS Intraduodenal infusion of umami and a combination of tastants inhibits feelings of hunger, but only the latter also reduces food intake. However, these alterations were not accompanied by changes in the plasma concentrations of the gut-derived peptides cholecystokinin, GLP-1, or PYY. This trial was registered at clinicaltrials.gov as NCT01956838.
Collapse
Affiliation(s)
- Mark van Avesaat
- Top Institute of Food and Nutrition, Wageningen, Netherlands; Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands;
| | - Freddy J Troost
- Top Institute of Food and Nutrition, Wageningen, Netherlands; Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
| | - Dina Ripken
- Top Institute of Food and Nutrition, Wageningen, Netherlands; The Netherlands Organization for Applied Scientific Research, Zeist, Netherlands; and Division of Human Nutrition, Wageningen University, Wageningen, Netherlands
| | - Jelmer Peters
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
| | | | - Ad Am Masclee
- Top Institute of Food and Nutrition, Wageningen, Netherlands; Division of Gastroenterology-Hepatology, Department of Internal Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
| |
Collapse
|
29
|
Corstens MN, Berton-Carabin CC, de Vries R, Troost FJ, Masclee AAM, Schroën K. Food-grade micro-encapsulation systems that may induce satiety via delayed lipolysis: A review. Crit Rev Food Sci Nutr 2015; 57:2218-2244. [DOI: 10.1080/10408398.2015.1057634] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Meinou N. Corstens
- Department of Agrotechnology & Food Sciences, Food Process Engineering Group, Wageningen University and Research Center, Wageningen, The Netherlands
| | - Claire C. Berton-Carabin
- Department of Agrotechnology & Food Sciences, Food Process Engineering Group, Wageningen University and Research Center, Wageningen, The Netherlands
| | - Renko de Vries
- Department of Agrotechnology & Food Sciences, Physical Chemistry and Colloid Science Group, Wageningen University and Research Center, Wageningen, The Netherlands
| | - Freddy J. Troost
- Department of Internal Medicine, Division of Gastroenterology-Hepatology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Ad A. M. Masclee
- Department of Internal Medicine, Division of Gastroenterology-Hepatology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Karin Schroën
- Department of Agrotechnology & Food Sciences, Food Process Engineering Group, Wageningen University and Research Center, Wageningen, The Netherlands
| |
Collapse
|
30
|
Salden BN, Monserrat V, Troost FJ, Bruins MJ, Edens L, Bartholomé R, Haenen GR, Winkens B, Koning F, Masclee AA. Editorial: enhancing gluten digestion in the stomach - a further help to minimise unintentional ingestion? Authors' reply. Aliment Pharmacol Ther 2015; 42:485. [PMID: 26179761 DOI: 10.1111/apt.13296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Affiliation(s)
- B N Salden
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM, Maastricht University Medical Center (MUMC+), Maastricht, The Netherlands.
| | - V Monserrat
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre (LUMC), Leiden, The Netherlands
| | - F J Troost
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM, Maastricht University Medical Center (MUMC+), Maastricht, The Netherlands
| | - M J Bruins
- DSM Biotechnology Centre, Delft, The Netherlands
| | - L Edens
- DSM Biotechnology Centre, Delft, The Netherlands
| | - R Bartholomé
- Department of Pharmacology and Toxicology, CARIM, Maastricht University, Maastricht, The Netherlands
| | - G R Haenen
- Department of Pharmacology and Toxicology, CARIM, Maastricht University, Maastricht, The Netherlands
| | - B Winkens
- Department of Methodology and Statistics, CAPHRI, Maastricht University Medical Center (MUMC+), Maastricht, The Netherlands
| | - F Koning
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre (LUMC), Leiden, The Netherlands
| | - A A Masclee
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM, Maastricht University Medical Center (MUMC+), Maastricht, The Netherlands
| |
Collapse
|
31
|
Keszthelyi D, Troost FJ, Jonkers DM, van Eijk HM, Dekker J, Buurman WA, Masclee AAM. Visceral hypersensitivity in irritable bowel syndrome: evidence for involvement of serotonin metabolism--a preliminary study. Neurogastroenterol Motil 2015; 27:1127-37. [PMID: 26031193 DOI: 10.1111/nmo.12600] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Accepted: 04/22/2015] [Indexed: 12/20/2022]
Abstract
BACKGROUND Altered serotonergic (5-HT) metabolism and visceral perception have been associated with the pathogenesis of irritable bowel syndrome (IBS). Aim of this preliminary study was to assess the effect of the direct precursor of 5-HT, 5-hydroxytryptophan (5-HTP), on systemic 5-HT metabolites and visceral perception and to assess potential differential responses between IBS and controls. METHODS 15 IBS patients and 15 healthy volunteers participated in this randomized double-blind placebo controlled study. Visceroperception was measured by rectal barostat. The 100 mg 5-HTP or placebo was ingested orally. Serotonergic metabolites were assessed in platelet poor plasma. KEY RESULTS 5-HTP induces rectal allodynia in a significant number of healthy controls; IBS patients exhibit lowered pain thresholds in both placebo and 5-HTP conditions. 5-HTP induces rectal hyperalgesia in hypersensitive but not in non-hypersensitive IBS patients. Administration of 5-HTP significantly increased plasma 5-HTP levels (p < 0.001), did not affect 5-HT levels (p > 0.05), while levels of the main metabolite of 5-HT, 5-hydroxyindoleacetic acid, increased significantly (p < 0.05) in both groups. The magnitude of these changes observed in 5-HT metabolites was significantly greater in IBS patients. CONCLUSIONS & INFERENCES Oral administration of 5-HTP induced significant alterations in systemic 5-HT metabolites that were accompanied by increased visceroperception of pain in controls and hypersensitive IBS patients. Changes in 5-HT metabolism appear to be important factors involved in visceral hypersensitivity as the 5-HTP-induced pro-nociceptive response was observed in all hypersensitive IBS patients and to a lesser magnitude in a significant number of healthy controls but in none of the non-hypersensitive IBS patients.
Collapse
Affiliation(s)
- D Keszthelyi
- Top Institute Food and Nutrition, Wageningen, The Netherlands.,Division of Gastroenterology-Hepatology, Department of Internal Medicine, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - F J Troost
- Top Institute Food and Nutrition, Wageningen, The Netherlands.,Division of Gastroenterology-Hepatology, Department of Internal Medicine, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - D M Jonkers
- Top Institute Food and Nutrition, Wageningen, The Netherlands.,Division of Gastroenterology-Hepatology, Department of Internal Medicine, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - H M van Eijk
- Department of Surgery, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - J Dekker
- Top Institute Food and Nutrition, Wageningen, The Netherlands
| | - W A Buurman
- School for Mental Health and Neuroscience, Division Neuroscience, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - A A M Masclee
- Top Institute Food and Nutrition, Wageningen, The Netherlands.,Division of Gastroenterology-Hepatology, Department of Internal Medicine, Maastricht University Medical Center+, Maastricht, The Netherlands
| |
Collapse
|
32
|
Aguirre M, Jonkers DMAE, Troost FJ, Roeselers G, Venema K. In vitro characterization of the impact of different substrates on metabolite production, energy extraction and composition of gut microbiota from lean and obese subjects. PLoS One 2014; 9:e113864. [PMID: 25426858 PMCID: PMC4245234 DOI: 10.1371/journal.pone.0113864] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2014] [Accepted: 10/31/2014] [Indexed: 12/30/2022] Open
Abstract
The aim of this study was to investigate the effect of galacto-oligosaccharides, lactulose, apple fiber and sugar beet pectin on the composition and activity of human colonic microbiota of lean and obese healthy subjects using an in vitro model of the proximal colon: TIM-2. Substrate fermentation was assessed by measuring the production of short-chain and branched-chain fatty acids, lactate and ammonia and by studying the composition of the bacterial communities over time. The results suggest that energy harvest (in terms of metabolites) of lean and obese microbiotas is different and may depend on the fermentable substrate. For galacto-oligosaccharides and lactulose, the cumulative amount of short-chain fatty acids plus lactate produced in TIM-2 was lower in the fermentation experiments with the lean microbiota (123 and 155 mmol, respectively) compared to the obese (162 and 173 mmol, respectively). This was reversed for the pectin and the fiber. The absolute amount produced of short-chain fatty acids including lactate was higher after 72 h in the fermentation experiments with apple fiber-L (108 mmol) than with apple fiber-O (92 mmol). Sugar beet-L was also higher (130 mmol) compared to sugar beet-O (103 mmol). Galacto-oligosaccharides and lactulose boosted the balance of health-promoting over toxic metabolites produced by the microbiota from obese subjects. Firmicutes were more predominant in the inoculum prepared from feces of obese subjects compared to lean subjects. The average abundance at time zero was 92% and 74%, respectively. On the other hand, Bacteroidetes were more dominant in the microbiota prepared with homogenates from lean subjects with an average abundance of 22% compared with the microbiota prepared with homogenates from obese subjects (3.6%). This study brings evidence that different fermentable carbohydrates are fermented differently by lean and obese microbiotas, which contributes to the understanding of the role of diet and the microbiota in tackling obesity.
Collapse
Affiliation(s)
- Marisol Aguirre
- Top Institute of Food & Nutrition, Wageningen, Gelderland, The Netherlands
- Department of Human Biology, Maastricht University, Maastricht, Limburg, The Netherlands
- Department of Microbiology & Systems Biology, The Netherlands Organization for Applied Scientific Research, Zeist, Utrecht, The Netherlands
| | - Daisy M. A. E. Jonkers
- Department of Human Biology, Maastricht University, Maastricht, Limburg, The Netherlands
| | - Freddy J. Troost
- Department of Human Biology, Maastricht University, Maastricht, Limburg, The Netherlands
| | - Guus Roeselers
- Department of Microbiology & Systems Biology, The Netherlands Organization for Applied Scientific Research, Zeist, Utrecht, The Netherlands
| | - Koen Venema
- Top Institute of Food & Nutrition, Wageningen, Gelderland, The Netherlands
- Department of Microbiology & Systems Biology, The Netherlands Organization for Applied Scientific Research, Zeist, Utrecht, The Netherlands
- * E-mail:
| |
Collapse
|
33
|
Keszthelyi D, Troost FJ, Jonkers DM, van Eijk HM, Lindsey PJ, Dekker J, Buurman WA, Masclee AAM. Serotonergic reinforcement of intestinal barrier function is impaired in irritable bowel syndrome. Aliment Pharmacol Ther 2014; 40:392-402. [PMID: 24943480 DOI: 10.1111/apt.12842] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Revised: 03/09/2014] [Accepted: 05/28/2014] [Indexed: 12/19/2022]
Abstract
BACKGROUND Alterations in serotonergic (5-HT) metabolism and/or intestinal integrity have been associated with irritable bowel syndrome (IBS). AIMS To assess the effects of the precursor of 5-HT, 5-hydroxytryptophan (5-HTP), on mucosal 5-HT availability and intestinal integrity, and to assess potential differences between healthy controls and IBS patients. METHODS Fifteen IBS patients and 15 healthy volunteers participated in this randomised double-blind placebo-controlled study. Intestinal integrity was assessed by dual-sugar test and by determining the mucosal expression of tight junction proteins after ingestion of an oral bolus of 100 mg 5-HTP or placebo. Mucosal serotonergic metabolism was assessed in duodenal biopsy samples. RESULTS 5-HTP administration significantly increased mucosal levels of 5-HIAA, the main metabolite of 5-HT, in both healthy controls (7.1 ± 1.7 vs. 2.5 ± 0.7 pmol/mg, 5-HTP vs. placebo, P = 0.02) and IBS patients (20.0 ± 4.8 vs. 8.1 ± 1.3 pmol/mg, 5-HTP vs. placebo, P = 0.02), with the latter group showing a significantly larger increase. Lactulose/L-rhamnose ratios were significantly lower after administration of 5-HTP (P < 0.05) in healthy controls and were accompanied by redistribution of zonula occludens-1 (ZO-1), pointing to reinforcement of the barrier. In IBS, expression of the tight junction proteins was significantly lower compared to healthy controls, and 5-HTP resulted in a further decrease in occludin expression. CONCLUSIONS Oral 5-HTP induced alterations in mucosal 5-HT metabolism. In healthy controls, a reinforcement of the intestinal barrier was seen whereas such reaction was absent in IBS patients. This could indicate the presence of a serotonin-mediated mechanism aimed to reinforce intestinal barrier function, which seems to dysfunction in IBS patients.
Collapse
Affiliation(s)
- D Keszthelyi
- Top Institute Food and Nutrition, Wageningen, The Netherlands; Division of Gastroenterology-Hepatology, Department of Internal Medicine, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | | | | | | | | | | | | | | |
Collapse
|
34
|
van Avesaat M, Troost FJ, Ripken D, Hendriks HF, Masclee AAM. Ileal brake activation: macronutrient-specific effects on eating behavior? Int J Obes (Lond) 2014; 39:235-43. [PMID: 24957485 DOI: 10.1038/ijo.2014.112] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 06/11/2014] [Accepted: 06/17/2014] [Indexed: 01/03/2023]
Abstract
BACKGROUND Activation of the ileal brake, by infusing lipid directly into the distal part of the small intestine, alters gastrointestinal (GI) motility and inhibits food intake. The ileal brake effect on eating behavior of the other macronutrients is currently unknown. OBJECTIVE The objective of this study was to investigate the effects of ileal infusion of sucrose and casein on food intake, release of GI peptides, gastric emptying rate and small-bowel transit time with safflower oil as positive control. DESIGN This randomized, single-blind, crossover study was performed in 13 healthy subjects (6 male; mean age 26.4±2.9 years; mean body mass index 22.8±0.4 kg m(-2)) who were intubated with a naso-ileal catheter. Thirty minutes after the intake of a standardized breakfast, participants received an ileal infusion, containing control ((C) saline), safflower oil ((HL) 51.7 kcal), low-dose casein ((LP) 17.2 kcal) or high-dose casein ((HP) 51.7 kcal), low-dose sucrose ((LC) 17.2 kcal) and high-dose sucrose ((HC) 51.7 kcal), over a period of 90 min. Food intake was determined during an ad libitum meal. Visual analogue score questionnaires for hunger and satiety and blood samples were collected at regular intervals. RESULTS Ileal infusion of lipid, protein and carbohydrate resulted in a significant reduction in food intake compared with control (HL: 464.3±90.7 kcal, P<0.001; HP: 458.0±78.6 kcal, P<0.005; HC: 399.0±57.0 kcal, P<0.0001 vs control: 586.7±70.2 kcal, P<0.001, respectively). A reduction in energy intake was still apparent when the caloric amount of infused nutrients was added to the amount eaten during the ad libitum meal.Secretion of cholecystokinin and peptide YY but not of glucagon-like peptide-1 (7-36) was increased during ileal perfusion of fat, carbohydrates and protein. During ileal perfusion of all macronutrients, a delay in gastric emptying and intestinal transit was observed, but differences were not significant compared with control. CONCLUSION Apart from lipids, also sucrose and casein reduce food intake on ileal infusion, thereby activating the ileal brake. In addition to food intake, also satiety and GI peptide secretion were affected.
Collapse
Affiliation(s)
- M van Avesaat
- 1] Top Institute of Food and Nutrition, Wageningen, The Netherlands [2] Division of Gastroenterology and Hepatology, Department of Internal Medicine, NUTRIM, Maastricht University Medical Center, Maastricht, The Netherlands
| | - F J Troost
- 1] Top Institute of Food and Nutrition, Wageningen, The Netherlands [2] Division of Gastroenterology and Hepatology, Department of Internal Medicine, NUTRIM, Maastricht University Medical Center, Maastricht, The Netherlands
| | - D Ripken
- 1] Top Institute of Food and Nutrition, Wageningen, The Netherlands [2] The Netherlands Organisation for Applied Scientific Research, TNO, Zeist, The Netherlands [3] Division of Human Nutrition, Wageningen University, Wageningen, The Netherlands
| | - H F Hendriks
- 1] Top Institute of Food and Nutrition, Wageningen, The Netherlands [2] The Netherlands Organisation for Applied Scientific Research, TNO, Zeist, The Netherlands
| | - A A M Masclee
- 1] Top Institute of Food and Nutrition, Wageningen, The Netherlands [2] Division of Gastroenterology and Hepatology, Department of Internal Medicine, NUTRIM, Maastricht University Medical Center, Maastricht, The Netherlands
| |
Collapse
|
35
|
Krishnan S, van Avesaat M, Troost FJ, Hendriks HF, de Graaf AA. A new flexible plug and play scheme for modeling, simulating, and predicting gastric emptying. Theor Biol Med Model 2014; 11:28. [PMID: 24917054 PMCID: PMC4080776 DOI: 10.1186/1742-4682-11-28] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Accepted: 05/16/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND In-silico models that attempt to capture and describe the physiological behavior of biological organisms, including humans, are intrinsically complex and time consuming to build and simulate in a computing environment. The level of detail of description incorporated in the model depends on the knowledge of the system's behavior at that level. This knowledge is gathered from the literature and/or improved by knowledge obtained from new experiments. Thus model development is an iterative developmental procedure. The objective of this paper is to describe a new plug and play scheme that offers increased flexibility and ease-of-use for modeling and simulating physiological behavior of biological organisms. METHODS This scheme requires the modeler (user) first to supply the structure of the interacting components and experimental data in a tabular format. The behavior of the components described in a mathematical form, also provided by the modeler, is externally linked during simulation. The advantage of the plug and play scheme for modeling is that it requires less programming effort and can be quickly adapted to newer modeling requirements while also paving the way for dynamic model building. RESULTS As an illustration, the paper models the dynamics of gastric emptying behavior experienced by humans. The flexibility to adapt the model to predict the gastric emptying behavior under varying types of nutrient infusion in the intestine (ileum) is demonstrated. The predictions were verified with a human intervention study. The error in predicting the half emptying time was found to be less than 6%. CONCLUSIONS A new plug-and-play scheme for biological systems modeling was developed that allows changes to the modeled structure and behavior with reduced programming effort, by abstracting the biological system into a network of smaller sub-systems with independent behavior. In the new scheme, the modeling and simulation becomes an automatic machine readable and executable task.
Collapse
Affiliation(s)
- Shaji Krishnan
- Microbiology and Systems Biology, TNO, Utrechtseweg 48, P,O, Box 360, 3700 AJ Zeist, The Netherlands.
| | | | | | | | | |
Collapse
|
36
|
Keszthelyi D, Troost FJ, Jonkers DM, Kruimel JW, Leue C, Masclee AAM. Decreased levels of kynurenic acid in the intestinal mucosa of IBS patients: relation to serotonin and psychological state. J Psychosom Res 2013; 74:501-4. [PMID: 23731747 DOI: 10.1016/j.jpsychores.2013.01.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 01/20/2013] [Accepted: 01/22/2013] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Irritable bowel syndrome (IBS) has been associated with psychiatric comorbidity and alterations in serotonergic metabolism. Tryptophan is the precursor of serotonin (5-HT), but it is mainly catabolized through the kynurenine pathway. This pathway may also be involved in the pathogenesis of IBS by virtue of deviating tryptophan from the 5-HT pathway resulting in 5-HT deficiency. We therefore aimed to ascertain the mucosal and systemic concentrations of 5-HT and kynurenic acid (KYNA), a principal kynurenine metabolite. METHODS Duodenal mucosal biopsy specimens and platelet poor plasma samples were obtained from 15 healthy volunteers and 15 IBS patients. Psychological state was assessed using the Hospital Anxiety and Depression Scale and the Symptom Checklist-90. RESULTS IBS patients showed significantly lower mucosal and higher systemic concentrations of both 5-HT and KYNA compared to healthy controls. Also, significant correlation between mucosal but not plasma concentrations of KYNA and 5-HT and psychological state in IBS was observed. CONCLUSION The observation that mucosal KYNA and 5-HT are both decreased in IBS does not support the hypothesis that increased activation along the kynurenic pathway results in relative 5-HT deficiency. However, an increased release of these substances from the intestine to the systemic compartment may lead to a decrease in intestinal KYNA and 5-HT levels, resulting in disturbance of intestinal homeostasis. Thus, changes in psychological states observed in IBS patients may be secondary to alterations in gastrointestinal function, and in particular kynurenine and/or 5-HT metabolism.
Collapse
|
37
|
Keszthelyi D, Troost FJ, Jonkers DM, Helyes Z, Hamer HM, Ludidi S, Vanhoutvin S, Venema K, Dekker J, Szolcsányi J, Masclee AA. Alterations in mucosal neuropeptides in patients with irritable bowel syndrome and ulcerative colitis in remission: a role in pain symptom generation? Eur J Pain 2013; 17:1299-306. [PMID: 23529955 DOI: 10.1002/j.1532-2149.2013.00309.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/24/2013] [Indexed: 12/22/2022]
Abstract
BACKGROUND Irritable bowel syndrome (IBS) is a functional gastrointestinal disorder characterized by chronic abdominal pain. The transient receptor potential vanilloid 1 (TRPV1) channel, which is involved in visceral pain signalling, has been shown to be up-regulated in IBS. Activation of TRPV1 leads to the release of neuropeptides, such as somatostatin and substance P (SP). We hypothesized that increased pain perception in IBS could be explained by increased transcription in TRPV1 and/or altered levels of neuropeptides. We therefore assessed the transcription of TRPV1 and the mucosal concentration of somatostatin and SP in IBS in comparison to healthy volunteers and patients with ulcerative colitis (UC) in remission as disease controls, and to ascertain their relationship to pain symptoms. METHOD Sigmoid colonic mucosal samples were collected from 12 patients with IBS, 34 patients with UC in remission and 9 healthy volunteers, in which groups TRPV1 mRNA levels were determined using quantitative polymerase chain reaction and neuropeptide concentrations by radioimmunoassay. Pain symptom intensity was determined by questionnaires. RESULTS Transcription of TRPV1 as well as the concentration of neuropeptides were significantly higher in IBS, but only the former correlated with pain symptom severity. CONCLUSION Increased transcription of TRPV1 may provide a possible explanation for pain generation in IBS. While the neuropeptides SP and somatostatin were both found to be increased in IBS, these changes are not sufficient to explain pain generation. Pain generation in IBS is probably explained by a complex redundancy in the regulation of local nociceptive mechanisms, which remains a subject of intensive investigation.
Collapse
Affiliation(s)
- D Keszthelyi
- Top Institute Food and Nutrition, Wageningen, The Netherlands.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Peeters M, Troost FJ, Mingels RH, Welsch T, van Grinsven B, Vranken T, Ingebrandt S, Thoelen R, Cleij TJ, Wagner P. Impedimetric Detection of Histamine in Bowel Fluids Using Synthetic Receptors with pH-Optimized Binding Characteristics. Anal Chem 2013; 85:1475-83. [DOI: 10.1021/ac3026288] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marloes Peeters
- Institute for Materials Research, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek,
Belgium
| | - Freddy J. Troost
- Department of Internal
Medicine,
div. of Gastroenterology−Hepatology, Maastricht University Medical Center, Minderbroedersberg 4-6, 6211
LK Maastricht, The Netherlands
| | - Roel H.G. Mingels
- Institute for Materials Research, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek,
Belgium
| | - Tina Welsch
- Fachhochschule Kaiserslautern, University of Applied Sciences, Amerikastraße
1, 66482 Zweibrücken, Germany
| | - Bart van Grinsven
- Institute for Materials Research, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek,
Belgium
| | - Tom Vranken
- Institute for Materials Research, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek,
Belgium
| | - Sven Ingebrandt
- Fachhochschule Kaiserslautern, University of Applied Sciences, Amerikastraße
1, 66482 Zweibrücken, Germany
| | - Ronald Thoelen
- Institute for Materials Research, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek,
Belgium
- XIOS University College Limburg, Agoralaan - Building H, 3590 Diepenbeek,
Belgium
| | - Thomas Jan Cleij
- Institute for Materials Research, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek,
Belgium
| | - Patrick Wagner
- Institute for Materials Research, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek,
Belgium
- IMEC vzw, division
IMOMEC, Wetenschapspark
1, 3590 Diepenbeek, Belgium
| |
Collapse
|
39
|
Keszthelyi D, Troost FJ, Masclee AA. Irritable bowel syndrome: methods, mechanisms, and pathophysiology. Methods to assess visceral hypersensitivity in irritable bowel syndrome. Am J Physiol Gastrointest Liver Physiol 2012. [PMID: 22595988 DOI: 10.1152/ajpgi.00060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Irritable bowel syndrome (IBS) is a common functional gastrointestinal disorder, characterized by recurrent abdominal pain or discomfort in combination with disturbed bowel habits in the absence of identifiable organic cause. Visceral hypersensitivity has emerged as a key hypothesis in explaining the painful symptoms in IBS and has been proposed as a "biological hallmark" for the condition. Current techniques of assessing visceral perception include the computerized barostat using rectal distensions, registering responses induced by sensory stimuli including the flexor reflex and cerebral evoked potentials, as well as brain imaging modalities such as functional magnetic resonance imaging and positron emission tomography. These methods have provided further insight into alterations in pain processing in IBS, although the most optimal method and condition remain to be established. In an attempt to give an overview of these methods, a literature search in the electronic databases PubMed and MEDLINE was executed using the search terms "assessment of visceral pain/visceral nociception/visceral hypersensitivity" and "irritable bowel syndrome." Both original articles and review articles were considered for data extraction. This review aims to discuss currently used modalities in assessing visceral perception, along with advantages and limitations, and aims also to define future directions for methodological aspects in visceral pain research. Although novel paradigms such as brain imaging and neurophysiological recordings have been introduced in the study of visceral pain, confirmative studies are warranted to establish their robustness and clinical relevance. Therefore, subjective verbal reporting following rectal distension currently remains the best-validated technique in assessing visceral perception in IBS.
Collapse
Affiliation(s)
- D Keszthelyi
- Top Institute Food and Nutrition, Wageningen, The Netherlands.
| | | | | |
Collapse
|
40
|
Keszthelyi D, Troost FJ, Masclee AA. Irritable bowel syndrome: methods, mechanisms, and pathophysiology. Methods to assess visceral hypersensitivity in irritable bowel syndrome. Am J Physiol Gastrointest Liver Physiol 2012; 303:G141-54. [PMID: 22595988 DOI: 10.1152/ajpgi.00060.2012] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Irritable bowel syndrome (IBS) is a common functional gastrointestinal disorder, characterized by recurrent abdominal pain or discomfort in combination with disturbed bowel habits in the absence of identifiable organic cause. Visceral hypersensitivity has emerged as a key hypothesis in explaining the painful symptoms in IBS and has been proposed as a "biological hallmark" for the condition. Current techniques of assessing visceral perception include the computerized barostat using rectal distensions, registering responses induced by sensory stimuli including the flexor reflex and cerebral evoked potentials, as well as brain imaging modalities such as functional magnetic resonance imaging and positron emission tomography. These methods have provided further insight into alterations in pain processing in IBS, although the most optimal method and condition remain to be established. In an attempt to give an overview of these methods, a literature search in the electronic databases PubMed and MEDLINE was executed using the search terms "assessment of visceral pain/visceral nociception/visceral hypersensitivity" and "irritable bowel syndrome." Both original articles and review articles were considered for data extraction. This review aims to discuss currently used modalities in assessing visceral perception, along with advantages and limitations, and aims also to define future directions for methodological aspects in visceral pain research. Although novel paradigms such as brain imaging and neurophysiological recordings have been introduced in the study of visceral pain, confirmative studies are warranted to establish their robustness and clinical relevance. Therefore, subjective verbal reporting following rectal distension currently remains the best-validated technique in assessing visceral perception in IBS.
Collapse
Affiliation(s)
- D Keszthelyi
- Top Institute Food and Nutrition, Wageningen, The Netherlands.
| | | | | |
Collapse
|
41
|
Geraedts MCP, Troost FJ, Saris WHM. Addition of sucralose enhances the release of satiety hormones in combination with pea protein. Mol Nutr Food Res 2012; 56:417-24. [PMID: 22378494 DOI: 10.1002/mnfr.201100297] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2011] [Revised: 10/24/2011] [Accepted: 11/06/2011] [Indexed: 12/21/2022]
Abstract
SCOPE Exposing the intestine to proteins or tastants, particularly sweet, affects satiety hormone release. There are indications that each sweetener has different effects on this release, and that combining sweeteners with other nutrients might exert synergistic effects on hormone release. METHODS AND RESULTS STC-1 cells were incubated with acesulfame-K, aspartame, saccharine, sucralose, sucrose, pea, and pea with each sweetener. After a 2-h incubation period, cholecystokinin(CCK) and glucagon-like peptide 1 (GLP-1) concentrations were measured. Using Ussing chamber technology, the mucosal side of human duodenal biopsies was exposed to sucrose, sucralose, pea, and pea with each sweetener. CCK and GLP-1 levels were measured in basolateral secretions. In STC-1 cells, exposure to aspartame, sucralose, sucrose, pea, and pea with sucralose increased CCK levels, whereas GLP-1 levels increased after addition of all test products. Addition of sucrose and sucralose to human duodenal biopsies did not affect CCK and GLP-1 release; addition of pea stimulated CCK and GLP-1 secretion. CONCLUSION Combining pea with sucrose and sucralose induced even higher levels of CCK and GLP-1. Synchronous addition of pea and sucralose to enteroendocrine cells induced higher levels of CCK and GLP-1 than addition of each compound alone. This study shows that combinations of dietary compounds synergize to enhance satiety hormone release.
Collapse
Affiliation(s)
- Maartje C P Geraedts
- Department of Human Biology, Maastricht University Medical Center +, Maastricht, The Netherlands.
| | | | | |
Collapse
|
42
|
Keszthelyi D, Troost FJ, Jonkers DM, van Donkelaar EL, Dekker J, Buurman WA, Masclee AA. Does acute tryptophan depletion affect peripheral serotonin metabolism in the intestine? Am J Clin Nutr 2012; 95:603-8. [PMID: 22301931 DOI: 10.3945/ajcn.111.028589] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Serotonin (5-hydroxytryptamine; 5-HT), a tryptophan metabolite, plays an important regulatory role in the human central nervous system and in the gastrointestinal tract. Acute tryptophan depletion (ATD) is currently the most widely established method to investigate 5-HT metabolism. OBJECTIVE The aim of this study was to assess the effect of an acute decrease in the systemic availability of tryptophan on intestinal 5-HT metabolism and permeability. DESIGN Thirty-three healthy volunteers (17 with ATD, 3 of whom dropped out; 16 placebo) participated in this randomized placebo-controlled study. Plasma and duodenal mucosal concentrations of 5-HT, 5-hydroxyindoleacetic acid (5-HIAA), and kynurenic acid (KA) were measured by HPLC-mass spectrometry. Intestinal barrier function was assessed with a multisugar plasma test, and analysis of tight junction transcription was performed in duodenal biopsy samples obtained by gastroduodenoscopy. RESULTS Mucosal 5-HT, 5-HIAA, and KA concentrations remained unaltered by ATD. In contrast, ATD significantly decreased plasma 5-HT (P < 0.05) and 5-HIAA (P < 0.0001) concentrations. After endoscopy, a significant increase in plasma 5-HT concentrations was observed in the placebo group (P = 0.029) compared with the ATD group. Moreover, a significant increase in plasma KA concentrations over time was found in the placebo group (P < 0.05). No changes in intestinal barrier function were observed. CONCLUSIONS An acute decrease in precursor availability does not affect mucosal concentrations of serotonergic metabolites, in contrast with systemic concentrations. ATD alters biochemical responses to acute stress from the endoscopic examination reflected by lower 5-HT concentrations. Changes in 5-HT concentrations were paralleled by alterations in KA concentrations, which suggest competition between the 2 metabolic pathways for the mutual precursor. This trial was registered at clinicaltrials.gov as NCT00731003.
Collapse
|
43
|
Geraedts MCP, Troost FJ, De Ridder RJ, Bodelier AGL, Masclee AAM, Saris WHM. Validation of Ussing chamber technology to study satiety hormone release from human duodenal specimens. Obesity (Silver Spring) 2012; 20:678-82. [PMID: 21566565 DOI: 10.1038/oby.2011.104] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
By developing novel screening technologies to test effects of food ingredients on hormone release, which are comparable to the in vivo situation, fewer tests may have to be performed using volunteers, whereas it still provides information that can be extrapolated to the human situation. In an in vivo intervention study, 10 lean (BMI: 20-25 kg/m(2)) and 10 obese (BMI >30 kg/m(2)) were recruited. All subjects randomly received pea protein (PP) solutions or placebo, orally and intraduodenally. Cholecystokinin (CCK) and glucagon like peptide 1 (GLP-1) release was measured over 2 h. During the oral interventions, gastrointestinal (GI) fluids were retrieved. For the present ex vivo study, duodenal biopsies were taken and placed in Ussing chambers. The luminal side was exposed to PP, placebo, intraduodenal fluid after oral PP-intake and oral placebo-intake in vivo, and a commercial pea-hydrolysate for 2 h. CCK and GLP-1 levels were measured at the serosal side. After intraduodenal PP administration in vivo, the area under the curve (AUC) for both CCK and GLP-1 was significantly increased in both lean and obese subjects. In the ex vivo study, exposure to PP resulted in significantly elevated levels of CCK and GLP-1 compared to all other test solutions. These results indicate that the ex vivo Ussing chamber technology is a valid alternative for in vivo studies, and may therefore serve as a suitable screening tool for studying the effects of nutritional compounds on the release of satiety hormones.
Collapse
Affiliation(s)
- Maartje C P Geraedts
- Department of Human Biology, Maastricht University Medical Center+, Maastricht, The Netherlands.
| | | | | | | | | | | |
Collapse
|
44
|
Geraedts MC, Troost FJ, Saris WH. Different tastants and low-caloric sweeteners induce differential effects on the release of satiety hormones. Food Chem 2011; 129:731-8. [DOI: 10.1016/j.foodchem.2011.05.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2010] [Revised: 02/24/2011] [Accepted: 05/03/2011] [Indexed: 10/18/2022]
|
45
|
Geraedts MCP, Troost FJ, Munsters MJM, Stegen JHCH, de Ridder RJ, Conchillo JM, Kruimel JW, Masclee AAM, Saris WHM. Intraduodenal administration of intact pea protein effectively reduces food intake in both lean and obese male subjects. PLoS One 2011; 6:e24878. [PMID: 21931864 PMCID: PMC3172308 DOI: 10.1371/journal.pone.0024878] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Accepted: 08/23/2011] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Human duodenal mucosa secretes increased levels of satiety signals upon exposure to intact protein. However, after oral protein ingestion, gastric digestion leaves little intact proteins to enter the duodenum. This study investigated whether bypassing the stomach, through intraduodenal administration, affects hormone release and food-intake to a larger extent than orally administered protein in both lean and obese subjects. METHODS Ten lean (BMI:23.0±0.7 kg/m²) and ten obese (BMI:33.4±1.4 kg/m²) healthy male subjects were included. All subjects randomly received either pea protein solutions (250 mg/kg bodyweight in 0.4 ml/kg bodyweight of water) or placebo (0.4 ml/kg bodyweight of water), either orally or intraduodenally via a naso-duodenal tube. Appetite-profile, plasma GLP-1, CCK, and PYY concentrations were determined over a 2 h period. After 2 h, subjects received an ad-libitum meal and food-intake was recorded. RESULTS CCK levels were increased at 10(p<0.02) and 20(p<0.01) minutes after intraduodenal protein administration (IPA), in obese subjects, compared to lean subjects, but also compared to oral protein administration (OPA)(p<0.04). GLP-1 levels increased after IPA in obese subjects after 90(p<0.02) to 120(p<0.01) minutes, compared to OPA. Food-intake was reduced after IPA both in lean and obese subjects (-168.9±40 kcal (p<0.01) and -298.2±44 kcal (p<0.01), respectively), compared to placebo. Also, in obese subjects, food-intake was decreased after IPA (-132.6±42 kcal; p<0.01), compared to OPA. CONCLUSIONS Prevention of gastric proteolysis through bypassing the stomach effectively reduces food intake, and seems to affect obese subjects to a greater extent than lean subjects. Enteric coating of intact protein supplements may provide an effective dietary strategy in the prevention/treatment of obesity.
Collapse
Affiliation(s)
- Maartje C P Geraedts
- Department of Human Biology, Maastricht University Medical Center, Maastricht, The Netherlands.
| | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Abstract
This review discusses the role of enteroendocrine cells in the gastrointestinal tract as chemoreceptors that sense intraluminal contents and induce changes in food intake through the release of signalling substances, such as satiety hormones. Recent evidence supports the concept that chemosensing in the gut involves G protein-coupled receptors (GPCRs) that are known to mediate gustatory signals in the oral cavity. GPCRs can be grouped into several families, depending on the stimuli to which they respond, e.g. proteins, amino acids, carbohydrates, fatty acids, or tastants. Sensing of these stimuli by GPCRs results in hormone secretions of enteroendocrine cells, which participate in the control of food intake. A better understanding of the stimuli that induce the strongest binding with these receptors, and thus induce a strong release of hormones, can be a very useful strategy for the development of novel foods in the treatment of obesity.
Collapse
Affiliation(s)
- M C P Geraedts
- Department of Human Biology, Maastricht University Medical Centre +, PO Box 616, 6200 MD Maastricht, The Netherlands.
| | | | | |
Collapse
|
47
|
Booijink CCGM, El-Aidy S, Rajilić-Stojanović M, Heilig HGHJ, Troost FJ, Smidt H, Kleerebezem M, De Vos WM, Zoetendal EG. High temporal and inter-individual variation detected in the human ileal microbiota. Environ Microbiol 2011; 12:3213-27. [PMID: 20626454 DOI: 10.1111/j.1462-2920.2010.02294.x] [Citation(s) in RCA: 212] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The diversity and temporal stability of the predominant bacteria in the human ileum was studied with the use of ileal effluent samples of seven individuals with Brooke ileostomies. The total number of bacteria within the ileal effluent was in the range of 10⁷ -10⁸ bacteria per gram (wet weight). The diversity of the bacteria in the ileal effluent showed marked differences compared with that in faecal samples from age-matched healthy adults. The ileal effluent had a higher relative abundance of species within the orders Lactobacillales and Clostridiales, mainly Streptococcus bovis-related species, and the Veillonella group, and a lower proportion of species related to Ruminococcus gnavus, R. obeum and Bacteroides plebeius. In addition, inter-individual differences were found, indicative of a highly personal ileal microbiota profile. Furthermore, temporal profiles showed large fluctuations per individual over a period of 9-28 days (average similarity over a period of 9 days was as low as 44%), and differences between morning and afternoon profiles were observed. Parallel cloning and sequencing efforts revealed several phylotypes that were not identified in previous studies (12 out of 65 phylotypes showed less than 97% sequence similarity with previously reported sequences). Achaea were found to be below detection limit by quantitative PCR. Overall, the results indicate that the microbiota of the human ileum is relatively unstable, less complex and consisting of different dominating phylotypes when compared with the colonic microbiota.
Collapse
Affiliation(s)
- Carien C G M Booijink
- Laboratory of Microbiology, Department of Agrotechnology and Food Sciences, Wageningen University, Dreijenplein 10, 6703 HB Wageningen, the Netherlands
| | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Geraedts MCP, Troost FJ, Fischer MAJG, Edens L, Saris WHM. Direct induction of CCK and GLP-1 release from murine endocrine cells by intact dietary proteins. Mol Nutr Food Res 2011; 55:476-84. [PMID: 20938986 DOI: 10.1002/mnfr.201000142] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2010] [Revised: 08/11/2010] [Accepted: 08/26/2010] [Indexed: 11/08/2022]
Abstract
SCOPE Consumption of high-protein diets cause elevated levels of CCK and GLP-1. Although unknown, this might be due to protein breakdown by various proteases that originate from the gastrointestinal tract. This study investigated which dietary proteins, hydrolysates, or synthetic-peptides are most potent to affect secretion of CCK and GLP-1 in STC-1 cells known for satiety hormone release. METHODS AND RESULTS Addition of intact proteins to STC-1 cells exerted strong effects on secretion of satiety hormones. Casein, whey, and pea showed strongest effects on CCK release, whereas casein, codfish, egg, and wheat showed most pronounced effects on GLP-1 release. Egg-hydrolysate stimulated release of CCK and GLP-1, whereas all other tested hydrolysates and synthetic-peptides showed no significant effects on hormone release. Addition of a combination of trypsin and casein-hydrolysate, codfish, egg, egg-hydrolysate, sodium-casein, wheat-hydrolysate, or wheat resulted in additional stimulation of CCK release, compared to only the protein. Addition of a combination of DPP-IV and egg-hydrolysate, ovomucoid, or sodium-casein decreased GLP-1 levels. CONCLUSION This study showed that specific intact, or partially digested proteins, in contrast to protein-hydrolysates and synthetic-peptides, stimulated hormone release. We conclude that intact proteins exert strong effects on satiety hormone release, and may therefore provide potent dietary supplements for prevention or treatment of obesity.
Collapse
Affiliation(s)
- Maartje C P Geraedts
- Department of Human Biology, Maastricht University Medical Centre+, Maastricht, The Netherlands.
| | | | | | | | | |
Collapse
|
49
|
Geraedts MC, Troost FJ, Tinnemans R, Söderholm JD, Brummer RJ, Saris WH. Release of Satiety Hormones in Response to Specific Dietary Proteins Is Different between Human and Murine Small Intestinal Mucosa. Ann Nutr Metab 2010; 56:308-13. [DOI: 10.1159/000312664] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2009] [Accepted: 04/07/2010] [Indexed: 11/19/2022]
|
50
|
Karczewski J, Troost FJ, Konings I, Dekker J, Kleerebezem M, Brummer RJM, Wells JM. Regulation of human epithelial tight junction proteins by Lactobacillus plantarum in vivo and protective effects on the epithelial barrier. Am J Physiol Gastrointest Liver Physiol 2010; 298:G851-9. [PMID: 20224007 DOI: 10.1152/ajpgi.00327.2009] [Citation(s) in RCA: 418] [Impact Index Per Article: 29.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Lactobacillus plantarum, a commensal bacterium of humans, has been proposed to enhance the intestinal barrier, which is compromised in a number of intestinal disorders. To study the effect of L. plantarum strain WCFS1 on human barrier function, healthy subjects were administered L. plantarum or placebo in the duodenum for 6 h by means of a feeding catheter. The scaffold protein zonula occludens (ZO)-1 and transmembrane protein occludin were found to be significantly increased in the vicinity of the tight-junction (TJ) structures, which form the paracellular seal between cells of the epithelium. In an in vitro model of the human epithelium, L. plantarum induced translocation of ZO-1 to the TJ region; however, the effects on occludin were minor compared with those seen in vivo. L. plantarum was shown to activate Toll-like receptor 2 (TLR2) signaling, and treatment of Caco-2 monolayers with the TLR2 agonist Pam(3)-Cys-SK4(PCSK) significantly increased fluorescent staining of occludin in the TJ. Pretreatment of Caco-2 monolayers with L. plantarum or PCSK significantly attenuated the effects of phorbol ester-induced dislocation of ZO-1 and occludin and the associated increase in epithelial permeability. Our results identifying commensal bacterial stimulation of TLR2 in the gut epithelium as a regulator of epithelial integrity have important implications for understanding probiotic mechanisms and the control of intestinal homeostasis.
Collapse
Affiliation(s)
- Jurgen Karczewski
- Host-Microbe Interactomics Group, Univ. of Wageningen, P.O. Box 338, 6700 AH, Wageningen, The Netherlands.
| | | | | | | | | | | | | |
Collapse
|