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Ribeiro SA, Braga EL, Queiroga ML, Clementino MA, Fonseca XM, Belém MO, Magalhães LM, de Sousa JK, de Freitas TM, Veras HN, de Aquino CC, Santos AD, de Moura FR, Dos Santos AA, Havt A, Maciel BL, Lima AA. A New Murine Undernutrition Model Based on Complementary Feeding of Undernourished Children Causes Damage to the Morphofunctional Intestinal Epithelium Barrier. J Nutr 2024; 154:1232-1251. [PMID: 38346539 PMCID: PMC11347815 DOI: 10.1016/j.tjnut.2024.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 01/26/2024] [Accepted: 02/01/2024] [Indexed: 02/28/2024] Open
Abstract
BACKGROUND Complementary feeding is critical in establishing undernutrition. However, experimental undernourished diets do not represent the amount of nutrients in the complementary diets of undernourished children. OBJECTIVES To develop, validate, and evaluate the impact of a new murine model of undernutrition on the intestinal epithelium, based on the complementary diet of undernourished children from 7 countries with low-socioeconomic power belonging to the Malnutrition-Enteric Diseases (MAL-ED) cohort study. METHODS We used the difference in the percentage of energy, macronutrients, fiber and zinc in the complementary diet of children without undernutrition compared with stunting (height-for-age Z-score < -2) for the MAL-ED diet formulation. Subsequently, C57BL/6 mice were fed a control diet (AIN-93M diet) or MAL-ED diet for 28 d. Weight was measured daily; body composition was measured every 7 d; lactulose:mannitol ratio (LM) and morphometry were evaluated on days 7 and 28; the cotransport test and analysis of intestinal transporters and tight junctions were performed on day 7. RESULTS The MAL-ED diet presented -8.03% energy, -37.46% protein, -24.20% lipid, -10.83% zinc, +5.93% carbohydrate, and +45.17% fiber compared with the control diet. This diet rapidly reduced weight gain and compromised body growth and energy reserves during the chronic period (P < 0.05). In the intestinal epithelial barrier, this diet caused an increase in the LM (P < 0.001) and reduced (P < 0.001) the villous area associated with an increase in FAT/CD36 in the acute period and increased (P < 0.001) mannitol excretion in the chronic period. CONCLUSIONS The MAL-ED diet induced undernutrition in mice, resulting in acute damage to the integrity of the intestinal epithelial barrier and a subsequent increase in the intestinal area during the chronic period. This study introduces the first murine model of undernutrition for the complementary feeding phase, based on data from undernourished children in 7 different countries.
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Affiliation(s)
- Samilly A Ribeiro
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil.
| | - Enock Lr Braga
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Marcus L Queiroga
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Marco A Clementino
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Xhaulla Mqc Fonseca
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Mônica O Belém
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Lyvia Mvc Magalhães
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - José K de Sousa
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Thiago M de Freitas
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Herlice N Veras
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Cristiane C de Aquino
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Alan Dc Santos
- Núcleo de Estudos Químicos de Micromoléculas da Amazônia (NEQUIMA), Manaus, Brazil
| | - Flávio Rm de Moura
- Núcleo de Estudos Químicos de Micromoléculas da Amazônia (NEQUIMA), Manaus, Brazil
| | - Armênio A Dos Santos
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Alexandre Havt
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Bruna Ll Maciel
- Nutrition Postgraduation Program, Department of Nutrition, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Aldo Am Lima
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
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Maurer M, Peralta Martínez K, Trevelline BK, Tripoli D, Dearing MD, Derting T, Martinez Mota R, Pasch B, Kohl KD. Diet alters rodent fecal pellet size: implications for paleoecological and demographic studies using fecal dimensions. J Mammal 2021. [DOI: 10.1093/jmammal/gyab098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Measurements of fecal pellet size can provide important information about wild mammals, such as body size and demographic information. Previous studies have not rigorously tested whether diet can confound these measurements. Furthermore, it is unknown whether diet might alter fecal dimensions directly or through changes in animal physiology. Here, we studied three closely related rodent species that differ in natural feeding strategies. Individuals were fed diets that varied in protein and fiber content for 5 weeks. We then measured body size, fecal widths and lengths, and the radius of the large intestine. Diet composition significantly changed fecal widths in all species. High-fiber content significantly increased fecal widths and would cause overestimations of body size if applied to wild feces. Using path analysis, we found that fiber can increase fecal widths both directly and indirectly through increasing the large intestine radius. Protein affected each species differently, suggesting that protein effects vary by species feeding strategy and existing physiology. Overall, diet and large intestine morphology can alter fecal pellet measurements. Studies using fecal measurements therefore must consider these effects in their conclusions.
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Affiliation(s)
- Maya Maurer
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | | | - Brian K Trevelline
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Domenique Tripoli
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - M Denise Dearing
- School of Biological Sciences, University of Utah, Salt Lake City, UT 84112, USA
| | - Terry Derting
- Department of Biological Sciences, Murray State University, Murray, KY 42071, USA
| | - Rodolfo Martinez Mota
- Centro de Investigaciones Tropicales, Universidad Veracruzana, 91000 Xalapa, Veracruz, Mexico
| | - Bret Pasch
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ 86011, USA
| | - Kevin D Kohl
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA
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Sertraline and Citalopram Actions on Gut Barrier Function. Dig Dis Sci 2021; 66:3792-3802. [PMID: 33184794 PMCID: PMC8510962 DOI: 10.1007/s10620-020-06702-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 10/29/2020] [Indexed: 12/09/2022]
Abstract
INTRODUCTION Disruption of intestinal barrier is a key component to various diseases. Whether barrier dysfunction is the cause or effect in these situations is still unknown, although it is believed that translocation of luminal content may initiate gastrointestinal or systemic inflammatory disorders. Since trauma- or infection-driven epithelial permeability depends on Toll-like receptor (TLR) activity, inhibition of TLR signaling has been proposed as a strategy to protect intestinal barrier integrity after infection or other pathological conditions. Recently, selective serotonin recapture inhibitors including sertraline and citalopram were shown to inhibit TLR-3 activity, but the direct effects of these antidepressant drugs on the gut mucosa barrier remain largely unexplored. MATERIALS AND METHODS To investigate this, two approaches were used: first, ex vivo studies were performed to evaluate sertraline and citalopram-driven changes in permeability in isolated intestinal tissue. Second, both compounds were tested for their preventive effects in a rat model of disrupted gut barrier, induced by a low protein (LP) diet. RESULTS Only sertraline was able to increase transepithelial electrical resistance in the rat colon both when used in an ex vivo (0.8 μg/mL, 180 min) or in vivo (30 mg/kg p.o., 20 days) fashion. However, citalopram (20 mg/kg p.o., 20 days), but not sertraline, prevented the increase in phospho-IRF3 protein, a marker of TLR-3 activation, in LP-rat ileum. Neither antidepressant affected locomotion, anxiety-like behaviours or stress-induced defecation. CONCLUSION Our data provides evidence to support the investigation of sertraline as therapeutic strategy to protect intestinal barrier function under life-threatening situations or chronic conditions associated with gut epithelial disruption.
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Salameh E, Jarbeau M, Morel FB, Zeilani M, Aziz M, Déchelotte P, Marion-Letellier R. Modeling undernutrition with enteropathy in mice. Sci Rep 2020; 10:15581. [PMID: 32973261 PMCID: PMC7518247 DOI: 10.1038/s41598-020-72705-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 07/28/2020] [Indexed: 01/25/2023] Open
Abstract
Undernutrition is a global health issue leading to 1 out 5 all deaths in children under 5 years. Undernutrition is often associated with environmental enteric dysfunction (EED), a syndrome associated with increased intestinal permeability and gut inflammation. We aimed to develop a novel murine model of undernutrition with these EED features. Post-weaning mice were fed with low-protein diet (LP) alone or combined with a gastrointestinal insult trigger (indomethacin or liposaccharides). Growth, intestinal permeability and inflammation were assessed. LP diet induced stunting and wasting in post-weaning mice but did not impact gut barrier. We therefore combined LP diet with a single administration of indomethacin or liposaccharides (LPS). Indomethacin increased fecal calprotectin production while LPS did not. To amplify indomethacin effects, we investigated its repeated administration in addition to LP diet and mice exhibited stunting and wasting with intestinal hyperpermeability and gut inflammation. The combination of 3-weeks LP diet with repeated oral indomethacin administration induced wasting, stunting and gut barrier dysfunction as observed in undernourished children with EED. As noninvasive methods for investigating gut function in undernourished children are scarce, the present pre-clinical model provides an affordable tool to attempt to elucidate pathophysiological processes involved in EED and to identify novel therapeutic strategies.
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Affiliation(s)
- Emmeline Salameh
- Normandie Univ, INSERM Unit 1073, University of Rouen, 22 Boulevard Gambetta, 76000, Rouen, France.,Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, Rouen, France.,Nutrition Department, Nutriset S.A.S, Malaunay, France
| | - Marine Jarbeau
- Normandie Univ, INSERM Unit 1073, University of Rouen, 22 Boulevard Gambetta, 76000, Rouen, France.,Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, Rouen, France
| | - Fanny B Morel
- Nutrition Department, Nutriset S.A.S, Malaunay, France
| | | | - Moutaz Aziz
- Anatomopathology, Rouen University Hospital, Rouen, France
| | - Pierre Déchelotte
- Normandie Univ, INSERM Unit 1073, University of Rouen, 22 Boulevard Gambetta, 76000, Rouen, France.,Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, Rouen, France.,Nutrition Unit, Rouen University Hospital, Rouen, France
| | - Rachel Marion-Letellier
- Normandie Univ, INSERM Unit 1073, University of Rouen, 22 Boulevard Gambetta, 76000, Rouen, France. .,Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, Rouen, France.
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Breton J, Giallourou N, Nobis S, Morin A, Achamrah N, Goichon A, Belmonte L, Dechelotte P, Rego JLD, Coëffier M, Swann J. Characterizing the metabolic perturbations induced by activity-based anorexia in the C57Bl/6 mouse using 1H NMR spectroscopy. Clin Nutr 2020; 39:2428-2434. [DOI: 10.1016/j.clnu.2019.10.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 10/25/2019] [Indexed: 12/17/2022]
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Salameh E, Morel FB, Zeilani M, Déchelotte P, Marion-Letellier R. Animal Models of Undernutrition and Enteropathy as Tools for Assessment of Nutritional Intervention. Nutrients 2019; 11:nu11092233. [PMID: 31527523 PMCID: PMC6770013 DOI: 10.3390/nu11092233] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 08/24/2019] [Accepted: 09/08/2019] [Indexed: 02/06/2023] Open
Abstract
: Undernutrition is a major public health problem leading to 1 in 5 of all deaths in children under 5 years. Undernutrition leads to growth stunting and/or wasting and is often associated with environmental enteric dysfunction (EED). EED mechanisms leading to growth failure include intestinal hyperpermeability, villus blunting, malabsorption and gut inflammation. As non-invasive methods for investigating gut function in undernourished children are limited, pre-clinical models are relevant to elucidating the pathophysiological processes involved in undernutrition and EED, and to identifying novel therapeutic strategies. In many published models, undernutrition was induced using protein or micronutrient deficient diets, but these experimental models were not associated with EED. Enteropathy models mainly used gastrointestinal injury triggers. These models are presented in this review. We found only a few studies investigating the combination of undernutrition and enteropathy. This highlights the need for further developments to establish an experimental model reproducing the impact of undernutrition and enteropathy on growth, intestinal hyperpermeability and inflammation, that could be suitable for preclinical evaluation of innovative therapeutic intervention.
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Affiliation(s)
- Emmeline Salameh
- UniRouen, Inserm UMR 1073 Nutrition, Inflammation and Gut-Brain Axis, Normandie University, 76183 Rouen, France.
- Nutriset SAS, 76770 Malaunay, France.
| | | | | | - Pierre Déchelotte
- UniRouen, Inserm UMR 1073 Nutrition, Inflammation and Gut-Brain Axis, Normandie University, 76183 Rouen, France.
- Department of Nutrition, Rouen University Hospital, 76183 Rouen, France.
| | - Rachel Marion-Letellier
- UniRouen, Inserm UMR 1073 Nutrition, Inflammation and Gut-Brain Axis, Normandie University, 76183 Rouen, France.
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González-González M, Díaz-Zepeda C, Eyzaguirre-Velásquez J, González-Arancibia C, Bravo JA, Julio-Pieper M. Investigating Gut Permeability in Animal Models of Disease. Front Physiol 2019; 9:1962. [PMID: 30697168 PMCID: PMC6341294 DOI: 10.3389/fphys.2018.01962] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 12/31/2018] [Indexed: 12/12/2022] Open
Abstract
A growing number of investigations report the association between gut permeability and intestinal or extra-intestinal disorders under the basis that translocation of gut luminal contents could affect tissue function, either directly or indirectly. Still, in many cases it is unknown whether disruption of the gut barrier is a causative agent or a consequence of these conditions. Adequate experimental models are therefore required to further understand the pathophysiology of health disorders associated to gut barrier disruption and to develop and test pharmacological treatments. Here, we review the current animal models that display enhanced intestinal permeability, and discuss (1) their suitability to address mechanistic questions, such as the association between gut barrier alterations and disease and (2) their validity to test potential treatments for pathologies that are characterized by enhanced intestinal permeability.
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Affiliation(s)
- Marianela González-González
- Grupo de NeuroGastroBioquímica, Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Camilo Díaz-Zepeda
- Grupo de NeuroGastroBioquímica, Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Johana Eyzaguirre-Velásquez
- Grupo de NeuroGastroBioquímica, Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Camila González-Arancibia
- Grupo de NeuroGastroBioquímica, Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Javier A Bravo
- Grupo de NeuroGastroBioquímica, Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Marcela Julio-Pieper
- Grupo de NeuroGastroBioquímica, Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
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