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Li X, Ji S, Cipriani G, Hillestad ML, Eisenman ST, Barry MA, Nath KA, Linden DR, Wright A, AlAsfoor S, Grover M, Sha L, Hsi LC, Farrugia G. Adeno-associated virus-9 reverses delayed gastric emptying of solids in diabetic mice. Neurogastroenterol Motil 2023; 35:e14669. [PMID: 37702100 PMCID: PMC10841310 DOI: 10.1111/nmo.14669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 06/07/2023] [Accepted: 08/14/2023] [Indexed: 09/14/2023]
Abstract
BACKGROUND Gastroparesis is defined by delayed gastric emptying (GE) without obstruction. Studies suggest targeting heme oxygenase-1 (HO1) may ameliorate diabetic gastroparesis. Upregulation of HO1 expression via interleukin-10 (IL-10) in the gastric muscularis propria is associated with reversal of delayed GE in diabetic NOD mice. IL-10 activates the M2 cytoprotective phenotype of macrophages and induces expression of HO1 protein. Here, we assess delivery of HO1 by recombinant adeno-associated viruses (AAVs) in diabetic mice with delayed GE. METHODS C57BL6 diabetic delayed GE mice were injected with 1 × 1012 vg scAAV9-cre, scAAV9-GFP, or scAAV9-HO1 particles. Changes to GE were assessed weekly utilizing our [13 C]-octanoic acid breath test. Stomach tissue was collected to assess the effect of scAAV9 treatment on Kit, NOS1, and HO1 expression. KEY RESULTS Delayed GE returned to normal within 2 weeks of treatment in 7/12 mice receiving scAAV9-cre and in 4/5 mice that received the scAAV9-GFP, whereas mice that received scAAV9-HO1 did not respond in the same manner and had GE that took significantly longer to return to normal (6/7 mice at 4-6 weeks). Kit, NOS1, and HO1 protein expression in scAAV9-GFP-treated mice with normal GE were not significantly different compared with diabetic mice with delayed GE. CONCLUSIONS AND INFERENCES Injection of scAAV9 into diabetic C57BL6 mice produced a biological response that resulted in acceleration of GE independently of the cargo delivered by the AAV9 vector. Further research is needed to determine whether use of AAV mediated gene transduction in the gastric muscularis propria is beneficial and warranted.
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Affiliation(s)
- Xiaojie Li
- Department of Medicine, Division of Gastroenterology and Hepatology, Enteric Neuroscience Program, Mayo Clinic, Rochester, MN, USA
- Department of Neuroendocrine Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning Province, China
| | - Sihan Ji
- Department of Medicine, Division of Gastroenterology and Hepatology, Enteric Neuroscience Program, Mayo Clinic, Rochester, MN, USA
- Department of Neuroendocrine Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning Province, China
| | - Gianluca Cipriani
- Department of Medicine, Division of Gastroenterology and Hepatology, Enteric Neuroscience Program, Mayo Clinic, Rochester, MN, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Mn, USA
| | | | - Seth T. Eisenman
- Department of Medicine, Division of Gastroenterology and Hepatology, Enteric Neuroscience Program, Mayo Clinic, Rochester, MN, USA
| | - Michael A. Barry
- Department of Medicine, Division of Infectious Diseases, Mayo Clinic, Rochester, Mn, USA
| | - Karl A. Nath
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Mn, USA
- Department of Medicine, Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Mn, USA
| | - David R. Linden
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Mn, USA
| | - Alec Wright
- Department of Medicine, Division of Gastroenterology and Hepatology, Enteric Neuroscience Program, Mayo Clinic, Rochester, MN, USA
| | - Shefaa AlAsfoor
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Mn, USA
| | - Madhusudan Grover
- Department of Medicine, Division of Gastroenterology and Hepatology, Enteric Neuroscience Program, Mayo Clinic, Rochester, MN, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Mn, USA
| | - Lei Sha
- Department of Neuroendocrine Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning Province, China
| | - Linda C. Hsi
- Department of Medicine, Division of Gastroenterology and Hepatology, Enteric Neuroscience Program, Mayo Clinic, Rochester, MN, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Mn, USA
| | - Gianrico Farrugia
- Department of Medicine, Division of Gastroenterology and Hepatology, Enteric Neuroscience Program, Mayo Clinic, Rochester, MN, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Mn, USA
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Chavero-Pieres M, Viola MF, Appeltans I, Abdurahiman S, Gsell W, Matteoli G, Himmelreich U, Boeckxstaens G. Magnetic resonance imaging as a non-invasive tool to assess gastric emptying in mice. Neurogastroenterol Motil 2023; 35:e14490. [PMID: 36371706 PMCID: PMC10078537 DOI: 10.1111/nmo.14490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 10/04/2022] [Accepted: 10/18/2022] [Indexed: 11/15/2022]
Abstract
BACKGROUND Methods to study gastric emptying in rodents are time consuming or terminal, preventing repetitive assessment in the same animal. Magnetic resonance imaging (MRI) is a non-invasive technique increasingly used to investigate gastrointestinal function devoid of these shortcomings. Here, we evaluated MRI to measure gastric emptying in control animals and in two different models of gastroparesis. METHODS Mice were scanned using a 9.4 Tesla MR scanner. Gastric volume was measured by delineating the stomach lumen area. Control mice were scanned every 30 min after ingestion of a 0.2 g meal and stomach volume was quantified. The ability of MRI to detect delayed gastric emptying was evaluated in models of morphine-induced gastroparesis and streptozotocin-induced diabetes. KEY RESULTS Magnetic resonance imaging reproducibly detected increased gastric volume following ingestion of a standard meal and progressively decreased with a half emptying time of 59 ± 5 min. Morphine significantly increased gastric volume measured at t = 120 min (saline: 20 ± 2 vs morphine: 34 ± 5 mm3 ; n = 8-10; p < 0.001) and increased half emptying time using the breath test (saline: 85 ± 22 vs morphine: 161 ± 46 min; n = 10; p < 0.001). In diabetic mice, gastric volume assessed by MRI at t = 60 min (control: 23 ± 2 mm3 ; n = 14 vs diabetic: 26 ± 5 mm3 ; n = 18; p = 0.014) but not at t = 120 min (control: 21 ± 3 mm3 ; n = 13 vs diabetic: 18 ± 5 mm3 ; n = 18; p = 0.115) was significantly increased compared to nondiabetic mice. CONCLUSIONS AND INFERENCES Our data indicate that MRI is a reliable and reproducible tool to assess gastric emptying in mice and represents a useful technique to study gastroparesis in disease models or for evaluation of pharmacological compounds.
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Affiliation(s)
- Marta Chavero-Pieres
- Laboratory for Neuro-Immune Interaction, Translational Research Center for Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism (ChroMeta), KU Leuven, Leuven, Belgium
| | - Maria Francesca Viola
- Laboratory for Neuro-Immune Interaction, Translational Research Center for Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism (ChroMeta), KU Leuven, Leuven, Belgium
| | - Iris Appeltans
- Laboratory for Neuro-Immune Interaction, Translational Research Center for Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism (ChroMeta), KU Leuven, Leuven, Belgium
| | - Saeed Abdurahiman
- Laboratory for Mucosal Immunology, Translational Research Center for Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism (ChroMeta), KU Leuven, Leuven, Belgium
| | - Willy Gsell
- Biomedical MRI Unit, Department of Imaging and Pathology, University of Leuven, Leuven, Belgium
| | - Gianluca Matteoli
- Laboratory for Mucosal Immunology, Translational Research Center for Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism (ChroMeta), KU Leuven, Leuven, Belgium
| | - Uwe Himmelreich
- Biomedical MRI Unit, Department of Imaging and Pathology, University of Leuven, Leuven, Belgium
| | - Guy Boeckxstaens
- Laboratory for Neuro-Immune Interaction, Translational Research Center for Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism (ChroMeta), KU Leuven, Leuven, Belgium
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3
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Borg DJ, Faridi P, Giam KL, Reeves P, Fotheringham AK, McCarthy DA, Leung S, Ward MS, Harcourt BE, Ayala R, Scheijen JL, Briskey D, Dudek NL, Schalkwijk CG, Steptoe R, Purcell AW, Forbes JM. Short Duration Alagebrium Chloride Therapy Prediabetes Does Not Inhibit Progression to Autoimmune Diabetes in an Experimental Model. Metabolites 2021; 11:426. [PMID: 34203471 PMCID: PMC8305727 DOI: 10.3390/metabo11070426] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/21/2021] [Accepted: 06/22/2021] [Indexed: 12/17/2022] Open
Abstract
Mechanisms by which advanced glycation end products (AGEs) contribute to type 1 diabetes (T1D) pathogenesis are poorly understood. Since life-long pharmacotherapy with alagebrium chloride (ALT) slows progression to experimental T1D, we hypothesized that acute ALT therapy delivered prediabetes, may be effective. However, in female, non-obese diabetic (NODShiLt) mice, ALT administered prediabetes (day 50-100) did not protect against experimental T1D. ALT did not decrease circulating AGEs or their precursors. Despite this, pancreatic β-cell function was improved, and insulitis and pancreatic CD45.1+ cell infiltration was reduced. Lymphoid tissues were unaffected. ALT pre-treatment, prior to transfer of primed GC98 CD8+ T cell receptor transgenic T cells, reduced blood glucose concentrations and delayed diabetes, suggesting islet effects rather than immune modulation by ALT. Indeed, ALT did not reduce interferon-γ production by leukocytes from ovalbumin-pre-immunised NODShiLt mice and NODscid recipients given diabetogenic ALT treated NOD splenocytes were not protected against T1D. To elucidate β-cell effects, NOD-derived MIN6N8 β-cell major histocompatibility complex (MHC) Class Ia surface antigens were examined using immunopeptidomics. Overall, no major changes in the immunopeptidome were observed during the various treatments with all peptides exhibiting allele specific consensus binding motifs. As expected, longer MHC Class Ia peptides were captured bound to H-2Db than H-2Kb under all conditions. Moreover, more 10-12 mer peptides were isolated from H-2Db after AGE modified bovine serum albumin (AGE-BSA) treatment, compared with bovine serum albumin (BSA) or AGE-BSA+ALT treatment. Proteomics of MIN6N8 cells showed enrichment of processes associated with catabolism, the immune system, cell cycling and presynaptic endocytosis with AGE-BSA compared with BSA treatments. These data show that short-term ALT intervention, given prediabetes, does not arrest experimental T1D but transiently impacts β-cell function.
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Affiliation(s)
- Danielle J. Borg
- Glycation and Diabetes Complications, Mater Research Institute, The University of Queensland, Translational Research Institute, Brisbane, QLD 4102, Australia; (D.J.B.); (A.K.F.); (D.A.M.); (S.L.); (M.S.W.); (B.E.H.)
- Pregnancy and Development, Mater Research Institute, The University of Queensland, South Brisbane, QLD 4101, Australia
| | - Pouya Faridi
- Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Melbourne, VIC 3800, Australia; (P.F.); (K.L.G.); (R.A.); (N.L.D.); (A.W.P.)
| | - Kai Lin Giam
- Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Melbourne, VIC 3800, Australia; (P.F.); (K.L.G.); (R.A.); (N.L.D.); (A.W.P.)
| | - Peta Reeves
- Tolerance and Autoimmunity Group, The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, QLD 4102, Australia; (P.R.); (R.S.)
| | - Amelia K. Fotheringham
- Glycation and Diabetes Complications, Mater Research Institute, The University of Queensland, Translational Research Institute, Brisbane, QLD 4102, Australia; (D.J.B.); (A.K.F.); (D.A.M.); (S.L.); (M.S.W.); (B.E.H.)
| | - Domenica A. McCarthy
- Glycation and Diabetes Complications, Mater Research Institute, The University of Queensland, Translational Research Institute, Brisbane, QLD 4102, Australia; (D.J.B.); (A.K.F.); (D.A.M.); (S.L.); (M.S.W.); (B.E.H.)
| | - Sherman Leung
- Glycation and Diabetes Complications, Mater Research Institute, The University of Queensland, Translational Research Institute, Brisbane, QLD 4102, Australia; (D.J.B.); (A.K.F.); (D.A.M.); (S.L.); (M.S.W.); (B.E.H.)
| | - Micheal S. Ward
- Glycation and Diabetes Complications, Mater Research Institute, The University of Queensland, Translational Research Institute, Brisbane, QLD 4102, Australia; (D.J.B.); (A.K.F.); (D.A.M.); (S.L.); (M.S.W.); (B.E.H.)
| | - Brooke E. Harcourt
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Melbourne, VIC 3052, Australia
| | - Rochelle Ayala
- Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Melbourne, VIC 3800, Australia; (P.F.); (K.L.G.); (R.A.); (N.L.D.); (A.W.P.)
| | - Jean L. Scheijen
- Laboratory for Metabolism and Vascular Medicine, Department of Internal Medicine, Maastricht University, 6211 Maastricht, The Netherlands; (J.L.S.); (C.G.S.)
- Cardiovascular Research Institute Maastricht, 6211 Maastricht, The Netherlands
| | - David Briskey
- School of Human Movement and Nutrition Sciences, The University of Queensland, Brisbane, QLD 4067, Australia;
| | - Nadine L. Dudek
- Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Melbourne, VIC 3800, Australia; (P.F.); (K.L.G.); (R.A.); (N.L.D.); (A.W.P.)
| | - Casper G. Schalkwijk
- Laboratory for Metabolism and Vascular Medicine, Department of Internal Medicine, Maastricht University, 6211 Maastricht, The Netherlands; (J.L.S.); (C.G.S.)
- Cardiovascular Research Institute Maastricht, 6211 Maastricht, The Netherlands
| | - Raymond Steptoe
- Tolerance and Autoimmunity Group, The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, QLD 4102, Australia; (P.R.); (R.S.)
| | - Anthony W. Purcell
- Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Melbourne, VIC 3800, Australia; (P.F.); (K.L.G.); (R.A.); (N.L.D.); (A.W.P.)
| | - Josephine M. Forbes
- Glycation and Diabetes Complications, Mater Research Institute, The University of Queensland, Translational Research Institute, Brisbane, QLD 4102, Australia; (D.J.B.); (A.K.F.); (D.A.M.); (S.L.); (M.S.W.); (B.E.H.)
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Melbourne, VIC 3052, Australia
- Mater Clinical School, The University of Queensland, Brisbane, QLD 4101, Australia
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Abstract
Epigenetic modifications have been implicated to mediate several complications of diabetes mellitus (DM), especially nephropathy and retinopathy. Our aim was to ascertain whether epigenetic alterations in whole blood discriminate among patients with DM with normal, delayed, and rapid gastric emptying (GE).
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Kacmaz H, Alto A, Knutson K, Linden DR, Gibbons SJ, Farrugia G, Beyder A. A simple automated approach to measure mouse whole gut transit. Neurogastroenterol Motil 2021; 33:e13994. [PMID: 33000540 PMCID: PMC7899194 DOI: 10.1111/nmo.13994] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/23/2020] [Accepted: 08/25/2020] [Indexed: 12/05/2022]
Abstract
BACKGROUND Gastrointestinal (GI) motility is a complex physiological process that is critical for normal GI function. Disruption of GI motility frequently occurs in GI diseases or as side effects of therapeutics. Whole gut transit measurements, like carmine red leading-edge transit, in mice form the cornerstone of in vivo preclinical GI motility studies. METHOD We have developed an easily achievable, labor-saving method to measure whole gut transit time in mice. This approach uses inexpensive, commercially available materials to monitor pellet production over time via high definition cameras capturing time-lapse video for offline analysis. KEY RESULT We describe the assembly of our automated gut transit setup and validate this approach by comparing the results with loperamide to delay transit and conventional transit measurements. We demonstrate that compared to the control group, the loperamide group had slowed transit, evidenced by a decrease in total pellet production and prolonged whole gut transit time. The control group had an extended transit time compared with the results reported in the literature. Whole gut transit rates accelerated to times comparable to the literature by disrupting cages every 10-15 min to imitate the conventional approach, suggesting that disruption affects the assay and supports the use of an automated approach. CONCLUSION & INFERENCES A novel automated, inexpensive, and easily assembled whole gut transit setup is labor-saving and allows minimal disruption to animal behavior compared with the conventional approach.
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Affiliation(s)
- Halil Kacmaz
- Enteric Neuroscience Program (ENSP), Mayo Clinic, Rochester, Minnesota, USA.,Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Alecia Alto
- Enteric Neuroscience Program (ENSP), Mayo Clinic, Rochester, Minnesota, USA.,Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Kaitlyn Knutson
- Enteric Neuroscience Program (ENSP), Mayo Clinic, Rochester, Minnesota, USA.,Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - David R. Linden
- Enteric Neuroscience Program (ENSP), Mayo Clinic, Rochester, Minnesota, USA.,Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
| | - Simon J. Gibbons
- Enteric Neuroscience Program (ENSP), Mayo Clinic, Rochester, Minnesota, USA.,Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
| | - Gianrico Farrugia
- Enteric Neuroscience Program (ENSP), Mayo Clinic, Rochester, Minnesota, USA.,Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA.,Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
| | - Arthur Beyder
- Enteric Neuroscience Program (ENSP), Mayo Clinic, Rochester, Minnesota, USA.,Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA.,Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA.,Corresponding author: Arthur Beyder, MD, PhD, Enteric NeuroScience Program (ENSP), Division of Gastroenterology & Hepatology, Departments of Medicine and Physiology and Biomedical Engineering Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA. Telephone: (507) 284-2511, Fax: (507) 284-0266,
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6
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Goyal RK, Cristofaro V, Sullivan MP. Rapid gastric emptying in diabetes mellitus: Pathophysiology and clinical importance. J Diabetes Complications 2019; 33:107414. [PMID: 31439470 PMCID: PMC7707148 DOI: 10.1016/j.jdiacomp.2019.107414] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 07/20/2019] [Accepted: 08/07/2019] [Indexed: 12/23/2022]
Abstract
Although slow gastric emptying (gastroparesis) is a well-known complication of chronic hyperglycemia in diabetes mellitus (DM), it recently has become clear that rapid gastric emptying also is a frequent and important diabetic complication. In contrast, acute hyperglycemia causes slow gastric emptying, and acute hypoglycemia causes rapid gastric emptying. Rapid gastric emptying is frequent in T2DM; however, it may also occur in T1DM, particularly in the early stages of the disease, but may persist even into late stages. Recent studies suggest that usually, the stomach restricts the emptying of nutrients to 1-4 kcals/min. This restriction is due to the action of the gastric 'braking' hormones such as GLP-1, leptin, and amylin acting via the gastric inhibitory vagal motor circuit (GIVMC). Disruption of this braking system leads to rapid gastric emptying. Acute hyperglycemia also slows gastric emptying by stimulating the GIVMC, while acute hypoglycemia causes rapid gastric emptying by stimulating the gastric excitatory vagal motor circuit (GEVMC). In contrast, chronic hyperglycemia causes rapid gastric emptying by inducing oxidative stress in the stomach wall that disrupts inhibitory neuromuscular transmission and increases the contractility of the smooth muscle, while chronic hyperglycemia may also cause slow gastric emptying via severe inflammatory stress caused by proinflammatory macrophages and reduce contractility of the smooth muscle. There is a bidirectional relationship between blood glucose and gastric emptying. Thus, rapid gastric emptying may lead to a sizeable postprandial spike, and slow gastric emptying may blunt it. Postprandial hyperglycemia is involved in the development, progression, and complications of DM. Correction of fast gastric emptying involves agents that activate GIVMC and the use of gastric 'braking' hormones or their analogs. Recognition and treatment of rapid gastric emptying may contribute to better management of postprandial hyperglycemia and prevention of some diabetic complications.
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Affiliation(s)
- Raj K Goyal
- Departments of Medicine and Surgery, VA Boston Healthcare System and Harvard Medical School, Boston, MA, United States of America.
| | - Vivian Cristofaro
- Departments of Medicine and Surgery, VA Boston Healthcare System and Harvard Medical School, Boston, MA, United States of America
| | - Maryrose P Sullivan
- Departments of Medicine and Surgery, VA Boston Healthcare System and Harvard Medical School, Boston, MA, United States of America
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7
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Kishi K, Kaji N, Endo M, Tsuru Y, Oikawa T, Hori M. Development of a quantitative method for evaluating small intestinal motility using ultrasonography in mice. Exp Anim 2019; 68:381-389. [PMID: 30971623 PMCID: PMC6699966 DOI: 10.1538/expanim.19-0030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Upper gastrointestinal (GI) motility is affected by various drugs and diseases. However, changes in upper GI motility during these conditions are not well understood, as there are few quantitative in vivo methods that assess small intestinal motility in mice. Ultrasonography is a noninvasive method for imaging and evaluating the condition of the abdominal organs. The aim of the present study was to establish a novel method for evaluating small intestinal motility by using ultrasonography in mice. We measured GI motility with and without loperamide, an antidiarrheal medication, by intestinal transit using an orally administered dye, a 13C-octanoic acid breath test, and ultrasonography. Locomotion activity of the duodenal wall was used for quantifying the GI motility observed via ultrasonography. Our results showed that upper GI transit was significantly delayed by loperamide. The 13C-octanoic acid breath test revealed decreased gastric emptying in loperamide-treated mice. Through ultrasonography, large peristaltic movements were observed in the duodenum of the control mice. In contrast, after treatment with loperamide, these peristaltic movements were suppressed, and the duodenal lumen was enlarged, suggesting decreased duodenal motility. In accordance with these results, quantifiable locomotion activity was also significantly decreased. In conclusion, ultrasonography is an effective in vivo method to quantify small intestinal motility in mice.
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Affiliation(s)
- Kazuhisa Kishi
- Department of Veterinary Pharmacology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Noriyuki Kaji
- Department of Veterinary Pharmacology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Mari Endo
- Department of Clinical Research, Oriental Medicine Research Center, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8642, Japan
| | - Yoshiharu Tsuru
- Primetech Life Science Laboratory, PRIMETECH Corporation, 1-3-25 Koishikawa, Bunkyo-ku, Tokyo 112-0002, Japan
| | - Tetsuro Oikawa
- Department of Clinical Research, Oriental Medicine Research Center, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8642, Japan
| | - Masatoshi Hori
- Department of Veterinary Pharmacology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
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8
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Aye-Mon A, Hori K, Kozakai Y, Nakagawa T, Hiraga S, Nakamura T, Shiraishi Y, Okuda H, Ozaki N. CCR2 upregulation in DRG neurons plays a crucial role in gastric hyperalgesia associated with diabetic gastropathy. Mol Pain 2018; 14:1744806917751322. [PMID: 29359616 PMCID: PMC5784547 DOI: 10.1177/1744806917751322] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Background Diabetic gastropathy is a complex neuromuscular dysfunction of the stomach that commonly occurs in diabetes mellitus. Diabetic patients often present with upper gastrointestinal symptoms, such as epigastric discomfort or pain. The aim of this study was to assess gastric sensation in streptozocin-induced diabetes mellitus (DM) rats and to determine the contribution of C-C motif chemokine receptor 2 (CCR2) signaling to gastric hyperalgesia. Results DM rats showed signs of neuropathy (cutaneous mechanical hyperalgesia) from two weeks after streptozocin administration until the end of the experiment. Accelerated solid gastric emptying was observed at two weeks after streptozocin administration compared to the controls. Intense gastric hyperalgesia also developed in DM rats at two weeks after streptozocin administration, which was significantly reduced after intrathecal administration of the CCR2 antagonist INCB3344. Immunochemical analysis indicated that CCR2 expression was substantially upregulated in small and medium-sized dorsal root ganglia neurons of DM rats, although the protein level of monocyte chemoattractant protein-1, the preferred ligand for CCR2, was not significantly different between the control and DM groups. Conclusions These data suggest that CCR2 activation in nociceptive dorsal root ganglia neurons plays a role in the pathogenesis of gastric hyperalgesia associated with diabetic gastropathy and that CCR2 antagonist may be a promising treatment for therapeutic intervention.
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Affiliation(s)
- Aye Aye-Mon
- 1 Department of Functional Anatomy, Graduate School of Medical Science, Kanazawa University, Ishikawa, Japan
| | - Kiyomi Hori
- 1 Department of Functional Anatomy, Graduate School of Medical Science, Kanazawa University, Ishikawa, Japan
| | - Yu Kozakai
- 1 Department of Functional Anatomy, Graduate School of Medical Science, Kanazawa University, Ishikawa, Japan
| | - Tatsuki Nakagawa
- 1 Department of Functional Anatomy, Graduate School of Medical Science, Kanazawa University, Ishikawa, Japan
| | - Shinichiro Hiraga
- 2 Department of Molecular neuroscience, Graduate school of Medicine, Osaka University, Osaka, Japan
| | - Tsuneo Nakamura
- 1 Department of Functional Anatomy, Graduate School of Medical Science, Kanazawa University, Ishikawa, Japan
| | - Yoshitake Shiraishi
- 1 Department of Functional Anatomy, Graduate School of Medical Science, Kanazawa University, Ishikawa, Japan
| | - Hiroaki Okuda
- 1 Department of Functional Anatomy, Graduate School of Medical Science, Kanazawa University, Ishikawa, Japan
| | - Noriyuki Ozaki
- 1 Department of Functional Anatomy, Graduate School of Medical Science, Kanazawa University, Ishikawa, Japan
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9
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Muangchan N, Kooptiwut S, Tapechum S, Akarasereenont P, Vongsopanagul N, Pongwattanapakin K, Chaikomin R. 13C-Acetic Acid Breath Test Monitoring of Gastric Emptying during Disease Progression in Diabetic Rats. Biol Pharm Bull 2018; 40:1506-1514. [PMID: 28867733 DOI: 10.1248/bpb.b17-00320] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Gastric motility disturbance is commonly found in long-standing hyperglycemia. Both delayed and rapid gastric emptying has been reported in diabetes. However, very few studies have followed the changes in gastric emptying during disease progression in diabetes because of technical limitations. 13C-Acetic acid breath test is a validated method which is non-invasive and can be used repeatedly or serially to evaluate gastric emptying changes in animal. We investigated the gastric emptying changes in different stages of diabetes using 13C-acetic acid breath test, as well as its related mechanisms involving interstitial cells of Cajal (ICCs), and stem cell factor (SCF) in streptozotocin-induced diabetic rats. The results showed that gastric emptying was accelerated at the early stage (12 weeks of diabetes) whereas intramuscular ICCs (ICC-IM) networks were not different from normal group. At long-term stage (28 weeks of diabetes), gastric emptying had returned to normal pattern with no delayed. ICC-IM networks were decreased in the diabetic group compared to 12th weeks, and were lower than in the normal group at the same time point. SCF levels were constantly high in the diabetic group than in the normal group. This result indicated that 13C-acetic acid breath test is useful to track the alteration in gastric emptying during disease progression. The change of gastric emptying was not found to be significantly associated with ICC-IM. Elevated SCF may help to preserve ICC-IM, especially in the early phase of diabetes.
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Affiliation(s)
- Nipaporn Muangchan
- Department of Physiology, Faculty of Medicine Siriraj Hospital, Mahidol University
| | - Suwattanee Kooptiwut
- Department of Physiology, Faculty of Medicine Siriraj Hospital, Mahidol University
| | - Sompol Tapechum
- Department of Physiology, Faculty of Medicine Siriraj Hospital, Mahidol University
| | - Pravit Akarasereenont
- Department of Pharmacology and Center of Applied Thai Traditional Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University
| | | | | | - Reawika Chaikomin
- Department of Physiology, Faculty of Medicine Siriraj Hospital, Mahidol University
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10
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Miller KE, Bajzer Ž, Hein SS, Phillips JE, Syed S, Wright AM, Cipriani G, Gibbons SJ, Szurszewski JH, Farrugia G, Ordog T, Linden DR. High temporal resolution gastric emptying breath tests in mice. Neurogastroenterol Motil 2018; 30:e13333. [PMID: 29575442 PMCID: PMC6157017 DOI: 10.1111/nmo.13333] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 02/11/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND Gastric emptying is a complex physiological process regulating the division of a meal into smaller partitions for the small intestine. Disrupted gastric emptying contributes to digestive disease, yet current measures may not reflect different mechanisms by which the process can be altered. METHODS We have developed high temporal resolution solid and liquid gastric emptying breath tests in mice using [13 C]-octanoic acid and off axis- integrated cavity output spectroscopy (OA-ICOS). Stretched gamma variate and 2-component stretched gamma variate models fit measured breath excretion data. KEY RESULTS These assays detect acceleration and delay using pharmacological (7.5 mg/kg atropine) or physiological (nutrients, cold exposure stress, diabetes) manipulations and remain stable over time. High temporal resolution resolved complex excretion curves with 2 components, which was more prevalent in mice with delayed gastric emptying following streptozotocin-induced diabetes. There were differences in the gastric emptying of Balb/c vs C57Bl6 mice, with slower gastric emptying and a greater occurrence of two-phase gastric emptying curves in the latter strain. Gastric emptying of C57Bl6 could be accelerated by halving the meal size, but with no effect on the occurrence of two-phase gastric emptying curves. A greater proportion of two-phase gastric emptying was induced in Balb/c mice with the administration of PYY (8-80 nmol) 60 min following meal ingestion. CONCLUSIONS AND INFERENCES Collectively, these results demonstrate the utility of high temporal resolution gastric emptying assays. Two-phase gastric emptying is more prevalent than previously reported, likely involves intestinal feedback, but contributes little to the overall rate of gastric emptying.
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Affiliation(s)
- Katie E. Miller
- Department of Physiology and Biomedical Engineering and Enteric
NeuroScience Program, Mayo Clinic College of Medicine, Rochester MN 55905 USA
| | - Željko Bajzer
- Department of Physiology and Biomedical Engineering and Enteric
NeuroScience Program, Mayo Clinic College of Medicine, Rochester MN 55905 USA
- Department of Biochemistry and Molecular Biology, Mayo Clinic
College of Medicine, Rochester, MN 55905 USA
| | - Stephanie S. Hein
- Department of Physiology and Biomedical Engineering and Enteric
NeuroScience Program, Mayo Clinic College of Medicine, Rochester MN 55905 USA
| | - Jessica E. Phillips
- Department of Physiology and Biomedical Engineering and Enteric
NeuroScience Program, Mayo Clinic College of Medicine, Rochester MN 55905 USA
| | - Sabriya Syed
- Biochemistry and Molecular Biology Graduate Program, Mayo Clinic
College of Medicine, Rochester, MN 55905 USA
| | - Alec M. Wright
- Department of Physiology and Biomedical Engineering and Enteric
NeuroScience Program, Mayo Clinic College of Medicine, Rochester MN 55905 USA
| | - Gianluca Cipriani
- Division of Gastroenterology and Hepatology, Department of Medicine,
Mayo Clinic College of Medicine, Rochester, MN 55905 USA
| | - Simon J. Gibbons
- Division of Gastroenterology and Hepatology, Department of Medicine,
Mayo Clinic College of Medicine, Rochester, MN 55905 USA
| | - Joseph H. Szurszewski
- Department of Physiology and Biomedical Engineering and Enteric
NeuroScience Program, Mayo Clinic College of Medicine, Rochester MN 55905 USA
- Division of Gastroenterology and Hepatology, Department of Medicine,
Mayo Clinic College of Medicine, Rochester, MN 55905 USA
| | - Gianrico Farrugia
- Department of Physiology and Biomedical Engineering and Enteric
NeuroScience Program, Mayo Clinic College of Medicine, Rochester MN 55905 USA
- Division of Gastroenterology and Hepatology, Department of Medicine,
Mayo Clinic College of Medicine, Rochester, MN 55905 USA
| | - Tamas Ordog
- Department of Physiology and Biomedical Engineering and Enteric
NeuroScience Program, Mayo Clinic College of Medicine, Rochester MN 55905 USA
- Division of Gastroenterology and Hepatology, Department of Medicine,
Mayo Clinic College of Medicine, Rochester, MN 55905 USA
| | - David R. Linden
- Department of Physiology and Biomedical Engineering and Enteric
NeuroScience Program, Mayo Clinic College of Medicine, Rochester MN 55905 USA
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11
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He XD, Guo YM, Goyal RK. Effect of Hyperglycemia on Purinergic and Nitrergic Inhibitory Neuromuscular Transmission in the Antrum of the Stomach: Implications for Fast Gastric Emptying. Front Med (Lausanne) 2018; 5:1. [PMID: 29410956 PMCID: PMC5787141 DOI: 10.3389/fmed.2018.00001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 01/03/2018] [Indexed: 12/27/2022] Open
Abstract
Background Hyperglycemia has been reported to enhance vagovagal reflex that causes the release of inhibitory neurotransmitter, nitric oxide (NO), at the neuromuscular junction in the antrum to relax the antrum and slow gastric emptying by stimulating glucose-sensitive afferent neurons. However, hyperglycemia has also been reported to cause fast gastric emptying that may be due to suppression of the inhibitory motor neurons. Aims The purpose of the present study was to investigate changes in inhibitory neuromuscular transmission in the gastric antrum due to hyperglycemia. Methods Inhibitory electrical junction potentials were recorded from gastric antral muscle strips, using intracellular electrodes under non-adrenergic, non-cholinergic conditions. Studies were performed in non-hyperglycemic NOD (NH-NOD), NOD mice as they develop hyperglycemia (H-NOD) and their age-matched controls. The purinergic inhibitory junction potential (pIJP) and nitrergic IJP (nIJP) were isolated pharmacologically. Results The control pIJP was large, around −18 mV and nIJP was small, around −9 mV. In NH-NOD the IJPs were not affected, but in H-NOD pIJP was nearly abolished and nIJP was significantly reduced. In H-NOD mice, membrane hyperpolarization caused by exogenous α,β-MeATP or diethylenetriamine NO adduct was similar to that in wild-type controls (P > 0.05). H-NOD smooth muscles were significantly depolarized as compared to NH-NOD smooth muscles. Conclusion These observations show that hyperglycemia causes suppression of purinergic and nitrergic transmission by acting on the motor neurons that form the last neuron in the vagovagal circuit. Moreover, the loss the neurotransmission is due to a defect in neurotransmitter release rather than a defect in signal transduction. Hyperglycemia also causes depolarization of smooth muscles that may increase their excitability.
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Affiliation(s)
- Xue-Dao He
- Department of Medicine VA Boston Healthcare System, Harvard Medical School, Boston, MA, United States
| | - Yan-Mei Guo
- Department of Medicine VA Boston Healthcare System, Harvard Medical School, Boston, MA, United States
| | - Raj K Goyal
- Department of Medicine VA Boston Healthcare System, Harvard Medical School, Boston, MA, United States
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12
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Hayashi Y, Toyomasu Y, Saravanaperumal SA, Bardsley MR, Smestad JA, Lorincz A, Eisenman ST, Cipriani G, Nelson Holte MH, Al Khazal FJ, Syed SA, Gajdos GB, Choi KM, Stoltz GJ, Miller KE, Kendrick ML, Rubin BP, Gibbons SJ, Bharucha AE, Linden DR, Maher LJ, Farrugia G, Ordog T. Hyperglycemia Increases Interstitial Cells of Cajal via MAPK1 and MAPK3 Signaling to ETV1 and KIT, Leading to Rapid Gastric Emptying. Gastroenterology 2017; 153:521-535.e20. [PMID: 28438610 PMCID: PMC5526732 DOI: 10.1053/j.gastro.2017.04.020] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 04/14/2017] [Accepted: 04/17/2017] [Indexed: 12/27/2022]
Abstract
BACKGROUND & AIMS Depletion of interstitial cells of Cajal (ICCs) is common in diabetic gastroparesis. However, in approximately 20% of patients with diabetes, gastric emptying (GE) is accelerated. GE also occurs faster in obese individuals, and is associated with increased blood levels of glucose in patients with type 2 diabetes. To understand the fate of ICCs in hyperinsulinemic, hyperglycemic states characterized by rapid GE, we studied mice with mutation of the leptin receptor (Leprdb/db), which in our colony had accelerated GE. We also investigated hyperglycemia-induced signaling in the ICC lineage and ICC dependence on glucose oxidative metabolism in mice with disruption of the succinate dehydrogenase complex, subunit C gene (Sdhc). METHODS Mice were given breath tests to analyze GE of solids. ICCs were studied by flow cytometry, intracellular electrophysiology, isometric contractility measurement, reverse-transcription polymerase chain reaction, immunoblot, immunohistochemistry, enzyme-linked immunosorbent assays, and metabolite assays; cells and tissues were manipulated pharmacologically and by RNA interference. Viable cell counts, proliferation, and apoptosis were determined by methyltetrazolium, Ki-67, proliferating cell nuclear antigen, bromodeoxyuridine, and caspase-Glo 3/7 assays. Sdhc was disrupted in 2 different strains of mice via cre recombinase. RESULTS In obese, hyperglycemic, hyperinsulinemic female Leprdb/db mice, GE was accelerated and gastric ICC and phasic cholinergic responses were increased. Female KitK641E/+ mice, which have genetically induced hyperplasia of ICCs, also had accelerated GE. In isolated cells of the ICC lineage and gastric organotypic cultures, hyperglycemia stimulated proliferation by mitogen-activated protein kinase 1 (MAPK1)- and MAPK3-dependent stabilization of ets variant 1-a master transcription factor for ICCs-and consequent up-regulation of v-kit Hardy-Zuckerman 4 feline sarcoma viral oncogene homolog (KIT) receptor tyrosine kinase. Opposite changes occurred in mice with disruption of Sdhc. CONCLUSIONS Hyperglycemia increases ICCs via oxidative metabolism-dependent, MAPK1- and MAPK3-mediated stabilization of ets variant 1 and increased expression of KIT, causing rapid GE. Increases in ICCs might contribute to the acceleration in GE observed in some patients with diabetes.
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Affiliation(s)
- Yujiro Hayashi
- Enteric Neuroscience Program, Mayo Clinic, Rochester, Minnesota,Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota,Gastroenterology Research Unit, Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Yoshitaka Toyomasu
- Enteric Neuroscience Program, Mayo Clinic, Rochester, Minnesota,Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota,Gastroenterology Research Unit, Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Siva Arumugam Saravanaperumal
- Enteric Neuroscience Program, Mayo Clinic, Rochester, Minnesota,Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota,Gastroenterology Research Unit, Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Michael R. Bardsley
- Enteric Neuroscience Program, Mayo Clinic, Rochester, Minnesota,Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota,Gastroenterology Research Unit, Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - John A. Smestad
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota
| | - Andrea Lorincz
- Enteric Neuroscience Program, Mayo Clinic, Rochester, Minnesota,Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota,Gastroenterology Research Unit, Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | | | | | | | - Fatimah J. Al Khazal
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota
| | - Sabriya A. Syed
- Enteric Neuroscience Program, Mayo Clinic, Rochester, Minnesota,Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota,Gastroenterology Research Unit, Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota,Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota
| | - Gabriella B. Gajdos
- Enteric Neuroscience Program, Mayo Clinic, Rochester, Minnesota,Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota,Gastroenterology Research Unit, Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Kyoung Moo Choi
- Enteric Neuroscience Program, Mayo Clinic, Rochester, Minnesota
| | - Gary J. Stoltz
- Enteric Neuroscience Program, Mayo Clinic, Rochester, Minnesota,Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | - Katie E. Miller
- Enteric Neuroscience Program, Mayo Clinic, Rochester, Minnesota,Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | | | - Brian P. Rubin
- Departments of Anatomic Pathology and Cancer Biology, Robert J. Tomsich Pathology and Laboratory Medicine Institute, Lerner Research Institute and Taussig Cancer Center, Cleveland Clinic, Cleveland, Ohio
| | - Simon J. Gibbons
- Enteric Neuroscience Program, Mayo Clinic, Rochester, Minnesota,Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | - Adil E. Bharucha
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - David R. Linden
- Enteric Neuroscience Program, Mayo Clinic, Rochester, Minnesota,Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | - Louis James Maher
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota
| | | | - Tamas Ordog
- Enteric Neuroscience Program, Mayo Clinic, Rochester, Minnesota; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota; Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota.
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13
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Choi KM, Gibbons SJ, Sha L, Beyder A, Verhulst PJ, Cipriani G, Phillips JE, Bauer AJ, Ordog T, Camp JJ, Ge X, Bharucha AE, Linden DR, Szurszewski JH, Kashyap PC, Farrugia G. Interleukin 10 Restores Gastric Emptying, Electrical Activity, and Interstitial Cells of Cajal Networks in Diabetic Mice. Cell Mol Gastroenterol Hepatol 2016; 2:454-467. [PMID: 27795979 PMCID: PMC5042607 DOI: 10.1016/j.jcmgh.2016.04.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 04/17/2016] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS Gastroparesis is a complication of diabetes characterized by delayed emptying of stomach contents and accompanied by early satiety, nausea, vomiting, and pain. No safe and reliable treatments are available. Interleukin 10 (IL10) activates the M2 cytoprotective phenotype of macrophages and induces expression of heme oxygenase 1 (HO1) protein. We investigated whether IL10 administration could improve gastric emptying and reverse the associated cellular and electrical abnormalities in diabetic mice. METHODS Nonobese diabetic mice with delayed gastric emptying were given either IL10 (0.1-1 μg, twice/day) or vehicle (controls). Stomach tissues were isolated, and sharp microelectrode recordings were made of the electrical activity in the gastric muscle layers. Changes to interstitial cells of Cajal (ICC), reduced nicotinamide adenine dinucleotide phosphate diaphorase, and levels and distribution of HO1 protein were determined by histochemical and imaging analyses of the same tissues. RESULTS Gastric emptying remained delayed in vehicle-treated diabetic mice but returned to normal in mice given IL10 (n = 10 mice; P < .05). In mice given IL10, normalization of gastric emptying was associated with a membrane potential difference between the proximal and distal stomach, and lower irregularity and higher frequency of slow-wave activity, particularly in the distal stomach. Levels of HO1 protein were higher in stomach tissues from mice given IL10, and ICC networks were more organized, better connected, and more evenly distributed compared with controls. CONCLUSIONS IL10 increases gastric emptying in diabetic mice and has therapeutic potential for patients with diabetic gastroparesis. This response is associated with up-regulation of HO1 and repair of connectivity of ICC networks.
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Affiliation(s)
- Kyoung Moo Choi
- Enteric NeuroScience Program, Mayo Clinic School of Medicine, Rochester, Minnesota
| | - Simon J. Gibbons
- Enteric NeuroScience Program, Mayo Clinic School of Medicine, Rochester, Minnesota
| | - Lei Sha
- Enteric NeuroScience Program, Mayo Clinic School of Medicine, Rochester, Minnesota
| | - Arthur Beyder
- Enteric NeuroScience Program, Mayo Clinic School of Medicine, Rochester, Minnesota
| | - Pieter-Jan Verhulst
- Enteric NeuroScience Program, Mayo Clinic School of Medicine, Rochester, Minnesota
| | - Gianluca Cipriani
- Enteric NeuroScience Program, Mayo Clinic School of Medicine, Rochester, Minnesota
| | - Jessica E. Phillips
- Enteric NeuroScience Program, Mayo Clinic School of Medicine, Rochester, Minnesota
| | - Anthony J. Bauer
- Department of Integrative Physiology and Pharmacology, Liberty University College of Osteopathic Medicine, Lynchburg, Virginia
| | - Tamas Ordog
- Enteric NeuroScience Program, Mayo Clinic School of Medicine, Rochester, Minnesota
| | - Jon J. Camp
- Enteric NeuroScience Program, Mayo Clinic School of Medicine, Rochester, Minnesota
| | - Xin Ge
- Enteric NeuroScience Program, Mayo Clinic School of Medicine, Rochester, Minnesota
| | - Adil E. Bharucha
- Enteric NeuroScience Program, Mayo Clinic School of Medicine, Rochester, Minnesota
| | - David R. Linden
- Enteric NeuroScience Program, Mayo Clinic School of Medicine, Rochester, Minnesota
| | | | - Purna C. Kashyap
- Enteric NeuroScience Program, Mayo Clinic School of Medicine, Rochester, Minnesota
| | - Gianrico Farrugia
- Enteric NeuroScience Program, Mayo Clinic School of Medicine, Rochester, Minnesota,Correspondence Address correspondence to: Gianrico Farrugia, MD, Enteric NeuroScience Program, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905. fax: (507) 284–0266.Enteric NeuroScience ProgramMayo Clinic200 First Street SWRochesterMinnesota 55905
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14
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Abstract
Accurately measuring the complex motor behaviors of the gastrointestinal tract has tremendous value for the understanding, diagnosis and treatment of digestive diseases. This review synthesizes the literature regarding current tests that are used in both humans and animals. There remains further opportunity to enhance such tests, especially when such tests are able to provide value in both the preclinical and the clinical settings.
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Key Words
- acute pancreatitis
- biliary pancreatitis
- necroptosis
- apoptosis
- pancreatic cell death
- ac, ascending colon
- cf6, filling the colon at 6 hours
- ct, computed tomography
- gebt, gastric emptying breath test
- hdam, high-definition anorectal pressure manometry/topography
- hram, high-resolution anorectal manometry
- ht, hydroxytryptophan
- iqr, interquartile range
- mmc, migrating motor complex
- mri, magnetic resonance imaging
- 99mtc, technetium-99m
- spect, single-photon emission computed tomography
- 13c, carbon-13
- 3-d, 3-dimensional
- wmc, wireless motility capsule
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15
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Cipriani G, Gibbons SJ, Verhulst PJ, Choi KM, Eisenman ST, Hein SS, Ordog T, Linden DR, Szurszewski JH, Farrugia G. Diabetic Csf1op/op mice lacking macrophages are protected against the development of delayed gastric emptying. Cell Mol Gastroenterol Hepatol 2015; 2:40-47. [PMID: 26771000 PMCID: PMC4707971 DOI: 10.1016/j.jcmgh.2015.09.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
BACKGROUND & AIMS Diabetic gastroparesis is associated with changes in interstitial cells of Cajal (ICC), neurons and smooth muscle cells in both animal models and humans. Macrophages appear to be critical to the development of cellular damage that leads to delayed gastric emptying but the mechanisms involved are not well understood. Csf1op/op (Op/Op) mice lack biologically active Csf1, resulting in the absence of Csf1-dependent tissue macrophages. The aim of this study was to use Csf1op/op mice to determine the role of macrophages in the development of delayed gastric emptying. METHODS Animals were injected with streptozotocin to make them diabetic. Gastric emptying was determined weekly. Immunohistochemistry was used to identify macrophages and ICC networks in the gastric muscular layers. Oxidative stress was measured by serum malondialdehyde (MDA) levels. Quantitative, reverse transcription PCR was used to measure levels of mRNA. RESULTS Csf1op/op mice had normal ICC. With onset of diabetes both Csf1op/op and wild type Csf1+/+ mice developed increased levels of oxidative stress (75.8 ± 9.1 and 41.2±13.6 nmol/mL MDA respectively). Wild type Csf1+/+ mice developed delayed gastric emptying after onset of diabetes (4/13) whereas no diabetic Csf1op/op mouse developed delayed gastric emptying (0/15, P=0.035). ICC were disrupted in diabetic wild type Csf1+/+ mice with delayed gastric emptying but remained normal in diabetic Csf1op/op mice. CONCLUSIONS Cellular injury and development of delayed gastric emptying in diabetes requires the presence of muscle layer macrophages. Targeting macrophages may be an effective therapeutic option to prevent cellular damage and development of delayed gastric emptying in diabetes.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Gianrico Farrugia
- Correspondence Address correspondence to: Gianrico Farrugia, MD, Enteric NeuroScience Program, Mayo Clinic 200 1st Street SW, Rochester, Minnesota 55905. fax: (507) 284–0266.Enteric NeuroScience ProgramMayo Clinic 200 1st Street SWRochesterMinnesota 55905
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16
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Bajzer Ž, Gibbons SJ, Coleman HD, Linden DR, Farrugia G. A gamma variate model that includes stretched exponential is a better fit for gastric emptying data from mice. Am J Physiol Gastrointest Liver Physiol 2015; 309:G162-70. [PMID: 26045615 PMCID: PMC4525107 DOI: 10.1152/ajpgi.00280.2014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Accepted: 05/31/2015] [Indexed: 01/31/2023]
Abstract
Noninvasive breath tests for gastric emptying are important techniques for understanding the changes in gastric motility that occur in disease or in response to drugs. Mice are often used as an animal model; however, the gamma variate model currently used for data analysis does not always fit the data appropriately. The aim of this study was to determine appropriate mathematical models to better fit mouse gastric emptying data including when two peaks are present in the gastric emptying curve. We fitted 175 gastric emptying data sets with two standard models (gamma variate and power exponential), with a gamma variate model that includes stretched exponential and with a proposed two-component model. The appropriateness of the fit was assessed by the Akaike Information Criterion. We found that extension of the gamma variate model to include a stretched exponential improves the fit, which allows for a better estimation of T1/2 and Tlag. When two distinct peaks in gastric emptying are present, a two-component model is required for the most appropriate fit. We conclude that use of a stretched exponential gamma variate model and when appropriate a two-component model will result in a better estimate of physiologically relevant parameters when analyzing mouse gastric emptying data.
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Affiliation(s)
- Željko Bajzer
- 1Department of Biochemistry and Molecular Biology and Department of Physiology and Biomedical Engineering, Division of Biomathematics, Mayo Clinic College of Medicine, Rochester, Minnesota;
| | - Simon J. Gibbons
- 2Enteric NeuroScience Program, Division of Gastroenterology and Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota;
| | - Heidi D. Coleman
- 3Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, Minnesota; and
| | - David R. Linden
- 4Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Gianrico Farrugia
- Enteric NeuroScience Program, Division of Gastroenterology and Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota;
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17
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Tian JX, Li M, Zhen Z, Li JL, Cao Y, Yan SH, Tong XL. Establishment and evaluation of animal models of diabetic gastroparesis. Shijie Huaren Xiaohua Zazhi 2015; 23:2091-2097. [DOI: 10.11569/wcjd.v23.i13.2091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The incidence of diabetic gastrointestinal disease, one of the most common complication of diabetes, is growing in recent years. Establishing an adequate animal model of diabetic gastrointestinal disease could effectively lay a solid foundation for the exploration of its mechanism and treatment. The rate of gastric emptying in diabetic gastrointestinal disease varies from acceleration to deceleration in different stages, and there is a lack of objective indicators to evaluate it. The establishment and evaluation of animals with diabetic gastrointestinal disease is still in the exploration stage. In this paper we summarize the establishment and evaluation of animal models of diabetic gastrointestinal disease. We compare the advantages and disadvantages of these animal models, in order to provide a reference for further study and treatment of this disease.
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18
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Bharucha AE, Kudva Y, Basu A, Camilleri M, Low PA, Vella A, Zinsmeister AR. Relationship between glycemic control and gastric emptying in poorly controlled type 2 diabetes. Clin Gastroenterol Hepatol 2015; 13:466-476.e1. [PMID: 25041866 PMCID: PMC4297596 DOI: 10.1016/j.cgh.2014.06.034] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Revised: 03/19/2014] [Accepted: 06/28/2014] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Acute hyperglycemia delays gastric emptying in patients with diabetes. However, it is not clear whether improved control of glycemia affects gastric emptying in these patients. We investigated whether overnight and short-term (6 mo) improvements in control of glycemia affect gastric emptying. METHODS We studied 30 patients with poorly controlled type 2 diabetes (level of glycosylated hemoglobin, >9%). We measured gastric emptying using the [(13)C]-Spirulina platensis breath test on the patients' first visit (visit 1), after overnight administration of insulin or saline, 1 week later (visit 2), and 6 months after intensive therapy for diabetes. We also measured fasting and postprandial plasma levels of C-peptide, glucagon-like peptide 1, and amylin, as well as autonomic functions. RESULTS At visit 1, gastric emptying was normal in 10 patients, delayed in 14, and accelerated in 6; 6 patients had gastrointestinal symptoms; vagal dysfunction was associated with delayed gastric emptying (P < .05). Higher fasting blood levels of glucose were associated with shorter half-times of gastric emptying (thalf) at visits 1 (r = -0.46; P = .01) and 2 (r = -0.43; P = .02). Although blood levels of glucose were lower after administration of insulin (132 ± 7 mg/dL) than saline (211 ± 15 mg/dL; P = .0002), gastric emptying thalf was not lower after administration of insulin, compared with saline. After 6 months of intensive therapy, levels of glycosylated hemoglobin decreased from 10.6% ± 0.3% to 9% ± 0.4% (P = .0003), but gastric emptying thalf did not change (92 ± 8 min before, 92 ± 7 min after). Gastric emptying did not correlate with plasma levels of glucagon-like peptide 1 and amylin. CONCLUSIONS Two-thirds of patients with poorly controlled type 2 diabetes have mostly asymptomatic yet abnormal gastric emptying. Higher fasting blood levels of glucose are associated with faster gastric emptying. Overnight and sustained (6 mo) improvements in glycemic control do not affect gastric emptying.
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Affiliation(s)
- Adil E Bharucha
- Clinical and Enteric Neuroscience Translational and Epidemiological Research Program, Division of Gastroenterology, Mayo Clinic, Rochester, Minnesota.
| | - Yogish Kudva
- Division of Endocrinology, Mayo Clinic, Rochester, Minnesota
| | - Ananda Basu
- Division of Endocrinology, Mayo Clinic, Rochester, Minnesota
| | - Michael Camilleri
- Clinical and Enteric Neuroscience Translational and Epidemiological Research Program, Division of Gastroenterology, Mayo Clinic, Rochester, Minnesota
| | - Phillip A Low
- Department of Neurology, Mayo Clinic, Rochester, Minnesota
| | - Adrian Vella
- Division of Endocrinology, Mayo Clinic, Rochester, Minnesota
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19
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Neshatian L, Gibbons SJ, Farrugia G. Macrophages in diabetic gastroparesis--the missing link? Neurogastroenterol Motil 2015; 27:7-18. [PMID: 25168158 PMCID: PMC4409126 DOI: 10.1111/nmo.12418] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 07/23/2014] [Indexed: 01/11/2023]
Abstract
BACKGROUND Diabetic gastroparesis results in significant morbidity for patients and major economic burden for society. Treatment options for diabetic gastroparesis are currently directed at symptom control rather than the underlying disease and are limited. The pathophysiology of diabetic gastroparesis includes damage to intrinsic and extrinsic neurons, smooth muscle, and interstitial cells of Cajal (ICC). Oxidative damage in diabetes appears to be one of the primary insults involved in the pathogenesis of several complications of diabetes, including gastroparesis. Recent studies have highlighted the potential role of macrophages as key cellular elements in the pathogenesis of diabetic gastroparesis. Macrophages are important for both homeostasis and defense against a variety of pathogens. Heme oxygenase 1 (HO1), an enzyme expressed in a subset of macrophages has emerged as a major protective mechanism against oxidative stress. Activation of macrophages with high levels of HO1 expression protects against development of delayed gastric emptying in animal models of diabetes, while activation of macrophages that do not express HO1 are linked to neuromuscular cell injury. Targeting macrophages and HO1 may therefore be a therapeutic option in diabetic gastroparesis. PURPOSE This report briefly reviews the pathophysiology of diabetic gastroparesis with a focus on oxidative damage and how activation and polarization of different subtypes of macrophages in the muscularis propria determines development of delay in gastric emptying or protects against its development.
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Affiliation(s)
- L Neshatian
- Enteric NeuroScience Program, Division of Gastroenterology and Hepatology, Mayo Clinic Rochester, Rochester, MN, USA
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20
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Chen Y, Zheng Y, Shi HL, Fei XY, Yuan JY. Relationship between ghrelin and abnormal gastric emptying in diabetes mellitus. Shijie Huaren Xiaohua Zazhi 2014; 22:5298-5303. [DOI: 10.11569/wcjd.v22.i34.5298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
In recent years, the morbidity of diabetes mellitus has increased rapidly in the world, and the harm of complications of diabetes mellitus has ranked third after cancer and cardiovascular and cerebrovascular diseases. Abnormal gastric emptying is one of the common complications of diabetic mellitus, which seriously influences the life quality of the patients. Therefore, it is important to investigate the pathogenesis of abnormal gastric emptying in diabetes mellitus. The role of ghrelin in the pathophysiology of abnormal gastric emptying in diabetes mellitus is a hot area of research now. In this paper, we review the relationship between ghrelin and abnormal gastric emptying in diabetes mellitus.
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Holmes GM, Swartz EM, McLean MS. Fabrication and implantation of miniature dual-element strain gages for measuring in vivo gastrointestinal contractions in rodents. J Vis Exp 2014:51739. [PMID: 25285858 DOI: 10.3791/51739] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Gastrointestinal dysfunction remains a major cause of morbidity and mortality. Indeed, gastrointestinal (GI) motility in health and disease remains an area of productive research with over 1,400 published animal studies in just the last 5 years. Numerous techniques have been developed for quantifying smooth muscle activity of the stomach, small intestine, and colon. In vitro and ex vivo techniques offer powerful tools for mechanistic studies of GI function, but outside the context of the integrated systems inherent to an intact organism. Typically, measuring in vivo smooth muscle contractions of the stomach has involved an anesthetized preparation coupled with the introduction of a surgically placed pressure sensor, a static pressure load such as a mildly inflated balloon or by distending the stomach with fluid under barostatically-controlled feedback. Yet many of these approaches present unique disadvantages regarding both the interpretation of results as well as applicability for in vivo use in conscious experimental animal models. The use of dual element strain gages that have been affixed to the serosal surface of the GI tract has offered numerous experimental advantages, which may continue to outweigh the disadvantages. Since these gages are not commercially available, this video presentation provides a detailed, step-by-step guide to the fabrication of the current design of these gages. The strain gage described in this protocol is a design for recording gastric motility in rats. This design has been modified for recording smooth muscle activity along the entire GI tract and requires only subtle variation in the overall fabrication. Representative data from the entire GI tract are included as well as discussion of analysis methods, data interpretation and presentation.
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Affiliation(s)
- Gregory M Holmes
- Department of Neural and Behavioral Sciences, Penn State University College of Medicine;
| | - Emily M Swartz
- Department of Neural and Behavioral Sciences, Penn State University College of Medicine
| | - Margaret S McLean
- Department of Neural and Behavioral Sciences, Penn State University College of Medicine
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Yarandi SS, Srinivasan S. Diabetic gastrointestinal motility disorders and the role of enteric nervous system: current status and future directions. Neurogastroenterol Motil 2014; 26:611-24. [PMID: 24661628 PMCID: PMC4104990 DOI: 10.1111/nmo.12330] [Citation(s) in RCA: 123] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2013] [Accepted: 02/18/2014] [Indexed: 02/06/2023]
Abstract
BACKGROUND Gastrointestinal manifestations of diabetes are common and a source of significant discomfort and disability. Diabetes affects almost every part of gastrointestinal tract from the esophagus to the rectum and causes a variety of symptoms including heartburn, nausea, vomiting, abdominal pain, diarrhea and constipation. Understanding the underlying mechanisms of diabetic gastroenteropathy is important to guide development of therapies for this common problem. Over recent years, the data regarding the pathophysiology of diabetic gastroenteropathy is expanding. In addition to autonomic neuropathy causing gastrointestinal disturbances the role of enteric nervous system is becoming more evident. PURPOSE In this review, we summarize the reported alterations in enteric nervous system including enteric neurons, interstitial cells of Cajal and neurotransmission in diabetic animal models and patients. We also review the possible underlying mechanisms of these alterations, with focus on oxidative stress, growth factors and diabetes induced changes in gastrointestinal smooth muscle. Finally, we will discuss recent advances and potential areas for future research related to diabetes and the ENS such as gut microbiota, micro-RNAs and changes in the microvasculature and endothelial dysfunction.
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Affiliation(s)
- S. S. Yarandi
- Division of Digestive Diseases; Emory University; Atlanta GA
- Atlanta VA Medical Center; Decatur Georgia USA
| | - S. Srinivasan
- Division of Digestive Diseases; Emory University; Atlanta GA
- Atlanta VA Medical Center; Decatur Georgia USA
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23
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Lim CH, Choi MG, Park H, Baeg MK, Park JM. Effect of DA-9701 on gastric emptying in a mouse model: Assessment by 13C-octanoic acid breath test. World J Gastroenterol 2013; 19:4380-4385. [PMID: 23885150 PMCID: PMC3718907 DOI: 10.3748/wjg.v19.i27.4380] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Accepted: 05/17/2013] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate the effects of DA-9701 on the gastric emptying of a solid meal using the 13C-octanoic acid breath test in a mouse model.
METHODS: Male C57BL/6 mice aged > 8 wk and with body weights of 20-25 g were used in this study. The solid test meal consisted of 200 mg of egg yolk labeled with 1.5 L/g 13C-octanoic acid. The mice were placed in a 130 mL chamber flushed with air at a flow speed of 200 mL/min. Breath samples were collected for 6 h. The half-emptying time and lag phase were calculated using a modified power exponential model. To assess the reproducibility of the 13C-octanoic acid breath test, the breath test was performed two times at intervals of one week in ten mice without drug treatment. To assess the gastrokinetic effects of DA-9701, the breath test was performed three times in another twelve mice, with a randomized crossover sequence of three drug treatments: DA-9701 3 mg/kg, erythromycin 6 mg/kg, or saline. Each breath test was performed at an interval of one week.
RESULTS: Repeatedly measured half gastric emptying time of ten mice without drug treatment showed 0.856 of the intraclass correlation coefficient for the half gastric emptying time (P = 0.004). The mean cumulative excretion curve for the 13C-octanoic acid breath test showed accelerated gastric emptying after DA-9701 treatment compared with the saline control (P = 0.028). The median half gastric emptying time after the DA-9701 treatment was significantly shorter than after the saline treatment [122.4 min (109.0-137.9 min) vs 134.5 min (128.4-167.0 min), respectively; P = 0.028] and similar to that after the erythromycin treatment [123.3 min (112.9-138.2 min)]. The lag phase, which was defined as the period taken to empty 15% of a meal, was significantly shorter after the DA-9701 treatment than after the saline treatment [48.1 min (44.6-57.1 min) vs 52.6 min (49.45-57.4 min), respectively; P = 0.049].
CONCLUSION: The novel prokinetic agent DA-9701 accelerated gastric emptying, assessed with repeated measurements in the same mouse using the 13C-octanoic acid breath test. Our findings suggest that DA-9701 has therapeutic potential for the treatment of functional dyspepsia.
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Creedon CT, Verhulst PJ, Choi KM, Mason JE, Linden DR, Szurszewski JH, Gibbons SJ, Farrugia G. Assessment of gastric emptying in non-obese diabetic mice using a [13C]-octanoic acid breath test. J Vis Exp 2013:e50301. [PMID: 23542813 DOI: 10.3791/50301] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Gastric emptying studies in mice have been limited by the inability to follow gastric emptying changes in the same animal since the most commonly used techniques require killing of the animals and postmortem recovery of the meal(1,2). This approach prevents longitudinal studies to determine changes in gastric emptying with age and progression of disease. The commonly used [(13)C]-octanoic acid breath test for humans(3) has been modified for use in mice(4-6) and rats(7) and we previously showed that this test is reliable and responsive to changes in gastric emptying in response to drugs and during diabetic disease progression(8). In this video presentation the principle and practical implementation of this modified test is explained. As in the previous study, NOD LtJ mice are used, a model of type 1 diabetes(9). A proportion of these mice develop the symptoms of gastroparesis, a complication of diabetes characterized by delayed gastric emptying without mechanical obstruction of the stomach(10). This paper demonstrates how to train the mice for testing, how to prepare the test meal and obtain 4 hr gastric emptying data and how to analyze the obtained data. The carbon isotope analyzer used in the present study is suitable for the automatic sampling of the air samples from up to 12 mice at the same time. This technique allows the longitudinal follow-up of gastric emptying from larger groups of mice with diabetes or other long-standing diseases.
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Affiliation(s)
- Christopher T Creedon
- Enteric Neuroscience Program, Department of Physiology and Biomedical Engineering, Mayo Clinic
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25
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Abstract
Donepezil {(RS)-2-[(1-benzyl-4-piperidyl)methyl]-5,6-dimethoxy-2,3-dihydroinden-1-one} is a reversible acetylcholinesterase inhibitor and used for treatment of patients with AD (Alzheimer's disease). Recent studies showed that treatment with donepezil reduced production of inflammatory cytokines in PBMCs (peripheral blood mononuclear cells). It was also reported that muscle-derived inflammatory cytokines play a critical role in neovascularization in a hindlimb ischaemia model. We sought to determine whether donepezil affects angiogenesis. A hindlimb ischaemia model was created by unilateral femoral artery ligation. Blood flow recovery examined by laser Doppler perfusion imaging and capillary density by immunohistochemical staining of CD31-positive cells in the ischaemic hindlimb were significantly decreased in donepezil- and physostigmine-treated mice compared with control mice after 2 weeks. Donepezil reduced expression of IL (interleukin)-1β and VEGF (vascular endothelial growth factor) in the ischaemic hindlimb. Intramuscular injections of IL-1β to the ischaemic hindlimb reversed the donepezil-induced VEGF down-regulation and the anti-angiogenic effect. Hypoxia induced IL-1β expression in C2C12 myoblast cells, which was inhibited by pre-incubation with ACh (acetylcholine) or LY294002, a PI3K (phosphoinositide 3-kinase) inhibitor. Donepezil inhibited phosphorylation of Akt [also known as PKB (protein kinase B)], a downstream kinase of PI3K, in the ischaemic hindlimb. These findings suggest that cholinergic stimulation by acetylcholinesterase inhibitors suppresses angiogenesis through inhibition of PI3K-mediated IL-1β induction, which is followed by reduction of VEGF expression. Acetylcholinesterase inhibitor may be a novel anti-angiogenic therapy.
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Yin J, Chen JDZ. Electroacupuncture improves rectal distension-induced delay in solid gastric emptying in dogs. Am J Physiol Regul Integr Comp Physiol 2011; 301:R465-72. [DOI: 10.1152/ajpregu.00271.2010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The aim of this study was to investigate the effects and mechanisms of electroacupuncture (EA) on rectal distension (RD)-induced delay in solid gastric emptying in dogs. Gastric emptying of solids was assessed in 12 dogs chronically implanted with a duodenal cannula by collecting samples at different time points from the cannula and measuring the dried weights of the samples. Bethanechol and atropine were used to qualitatively validate the method. In separate experiments, gastric emptying of solids was measured in a number of sessions: control, RD, RD + sham-EA, RD + EA of 6 mA, RD + EA of 3 mA, and RD + EA + naloxone. The method of gastric emptying by collecting and drying gastric chyme from the duodenal cannula was found to be accurate and reliable. Using the method, we found gastric emptying to be accelerated with bethanechol (70.01 ± 8.10% vs. 82.61 ± 4.15%, P = 0.04, vs. control) and delayed with atropine (4.31 ± 1.57%, P < 0.001, vs. control). RD substantially and significantly delayed gastric emptying. EA, but not sham-EA, attenuated delayed gastric emptying induced by RD (sham-EA: 48.79 ± 9.47% vs. EA: 74.28 ± 5.96%, P < 0.01). The effect was more potent with EA of 6 mA than EA of 3 mA and blocked by naloxone. EA is able to attenuate RD-induced delay in gastric emptying of solids, and this ameliorating effect may be mediated via the opioid pathway. EA may have a therapeutic potential for treating delayed gastric emptying attributed to lower gut distension.
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Affiliation(s)
- Jieyun Yin
- Division of Gastroenterology, University of Texas Medical Branch, Galveston, Texas
| | - Jiande D. Z. Chen
- Division of Gastroenterology, University of Texas Medical Branch, Galveston, Texas
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Gourcerol G, Adelson DW, Million M, Wang L, Taché Y. Modulation of gastric motility by brain-gut peptides using a novel non-invasive miniaturized pressure transducer method in anesthetized rodents. Peptides 2011; 32:737-46. [PMID: 21262308 PMCID: PMC3060955 DOI: 10.1016/j.peptides.2011.01.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2010] [Revised: 01/11/2011] [Accepted: 01/11/2011] [Indexed: 01/18/2023]
Abstract
Acute in vivo measurements are often the initial, most practicable approach used to investigate the effects of novel compounds or genetic manipulations on the regulation of gastric motility. Such acute methods typically involve either surgical implantation of devices or require intragastric perfusion of solutions, which can substantially alter gastric activity and may require extended periods of time to allow stabilization or recovery of the preparation. We validated a simple, non-invasive novel method to measure acutely gastric contractility, using a solid-state catheter pressure transducer inserted orally into the gastric corpus, in fasted, anesthetized rats or mice. The area under the curve of the phasic component (pAUC) of intragastric pressure (IGP) was obtained from continuous manometric recordings of basal activity and in responses to central or peripheral activation of cholinergic pathways, or to abdominal surgery. In rats, intravenous ghrelin or intracisternal injection of the thyrotropin-releasing hormone agonist, RX-77368, significantly increased pAUC while coeliotomy and cacal palpation induced a rapid onset inhibition of phasic activity lasting for the 1-h recording period. In mice, RX-77368 injected into the lateral brain ventricle induced high-amplitude contractions, and carbachol injected intraperitoneally increased pAUC significantly, while coeliotomy and cecal palpation inhibited baseline contractile activity. In wild-type mice, cold exposure (15 min) increased gastric phasic activity and tone, while there was no gastric response in corticotropin releasing factor (CRF)-overexpressing mice, a model of chronic stress. Thus, the novel solid-state manometric approach provides a simple, reliable means for acute pharmacological studies of gastric motility effects in rodents. Using this method we established in mice that the gastric motility response to central vagal activation is impaired under chronic expression of CRF.
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Affiliation(s)
- Guillaume Gourcerol
- CURE/Digestive Diseases Research Center, and Center for Neurobiology of Stress, Department of Medicine, Division of Digestive Diseases, University of California, Los Angeles, VA Greater Los Angeles Healthcare System, Los Angeles, CA 90073, USA
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Choi KM, Kashyap PC, Dutta N, Stoltz GJ, Ordog T, Donohue TS, Bauer AJ, Linden DR, Szurszewski JH, Gibbons SJ, Farrugia G. CD206-positive M2 macrophages that express heme oxygenase-1 protect against diabetic gastroparesis in mice. Gastroenterology 2010; 138:2399-409, 2409.e1. [PMID: 20178793 PMCID: PMC2883675 DOI: 10.1053/j.gastro.2010.02.014] [Citation(s) in RCA: 169] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2009] [Revised: 01/19/2010] [Accepted: 02/11/2010] [Indexed: 12/20/2022]
Abstract
BACKGROUND & AIMS Gastroparesis is a well-recognized complication of diabetes. In diabetics, up-regulation of heme oxygenase-1 (HO1) in gastric macrophages protects against oxidative stress-induced damage. Loss of up-regulation of HO1, the subsequent increase in oxidative stress, and loss of Kit delays gastric emptying; this effect is reversed by induction of HO1. Macrophages have pro- and anti-inflammatory activities, depending on their phenotype. We investigated the number and phenotype of gastric macrophages in NOD/ShiLtJ (nonobese diabetic [NOD]) mice after onset of diabetes, when delayed gastric emptying develops, and after induction of HO1 to reverse delay. METHODS Four groups of NOD and db/db mice were studied: nondiabetic, diabetic with normal emptying, diabetic with delayed gastric emptying, and diabetic with delayed gastric emptying reversed by the HO1 inducer hemin. Whole mount samples from stomach were labeled in triplicate with antisera against F4/80, HO1, and CD206, and macrophages were quantified in stacked confocal images. Markers for macrophage subtypes were measured by quantitative polymerase chain reaction. RESULTS Development of diabetes was associated with an increased number of macrophages and up-regulation of HO1 in CD206(+) M2 macrophages. Onset of delayed gastric emptying did not alter the total number of macrophages, but there was a selective loss of CD206(+)/HO1(+) M2 macrophages. Normalization of gastric emptying was associated with repopulation of CD206(+)/HO1(+) M2 macrophages. CONCLUSIONS CD206(+) M2 macrophages that express HO1 appear to be required for prevention of diabetes-induced delayed gastric emptying. Induction of HO1 in macrophages might be a therapeutic option for patients with diabetic gastroparesis.
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Affiliation(s)
- Kyoung Moo Choi
- Enteric Neuroscience Program and Department of Physiology Mayo Clinic, Rochester, MN
| | - Purna C. Kashyap
- Enteric Neuroscience Program and Department of Physiology Mayo Clinic, Rochester, MN
| | - Nirjhar Dutta
- Enteric Neuroscience Program and Department of Physiology Mayo Clinic, Rochester, MN
| | - Gary J. Stoltz
- Enteric Neuroscience Program and Department of Physiology Mayo Clinic, Rochester, MN
| | - Tamas Ordog
- Enteric Neuroscience Program and Department of Physiology Mayo Clinic, Rochester, MN
| | | | - Anthony J. Bauer
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - David R. Linden
- Enteric Neuroscience Program and Department of Physiology Mayo Clinic, Rochester, MN
| | - Joseph H. Szurszewski
- Enteric Neuroscience Program and Department of Physiology Mayo Clinic, Rochester, MN
| | - Simon J. Gibbons
- Enteric Neuroscience Program and Department of Physiology Mayo Clinic, Rochester, MN
| | - Gianrico Farrugia
- Enteric Neuroscience Program and Department of Physiology Mayo Clinic, Rochester, MN
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Kashyap PC, Choi KM, Dutta N, Linden DR, Szurszewski JH, Gibbons SJ, Farrugia G. Carbon monoxide reverses diabetic gastroparesis in NOD mice. Am J Physiol Gastrointest Liver Physiol 2010; 298:G1013-9. [PMID: 20378827 PMCID: PMC3284279 DOI: 10.1152/ajpgi.00069.2010] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Diabetic gastroparesis is associated with increased oxidative stress attributable to loss of upregulation of heme oxygenase-1 (HO1), with resultant damage to interstitial cells of Cajal and delayed gastric emptying. These changes can be reversed by induction of HO1. HO1 catalyzes the breakdown of heme into iron, biliverdin and, carbon monoxide (CO). The aim of this study was to determine whether inhalation of CO can mimic the protective effects of HO1. Nonobese diabetic (NOD) mice with delayed gastric emptying were treated with CO inhalation. Serum malondialdehyde was measured as a marker of oxidative stress. Gastric emptying of solids was measured using a [(13)C]octanoic acid breath test. Kit expression levels were determined in immunoblots of protein extracted from the external muscle layers of the gastric body and antrum. The effect of CO on oxidative stress and gastric emptying was also determined in the presence of HO activity inhibitor chromium mesoporphyrin. CO inhalation reduced oxidative stress, restored Kit expression and reversed delayed gastric emptying in diabetic NOD mice with delayed gastric emptying. CO inhalation maintained this effect in the presence of the HO activity inhibitor, chromium mesoporphyrin, also resulting in restoration of the delay in gastric emptying. CO inhalation mimics the protective effect of upregulation of HO1 and decreased oxidative stress, increased Kit expression, and restored delay in gastric emptying. This effect of CO was independent of HO activity, suggesting that its effects were downstream of HO1. CO represents a potential therapeutic option for treatment of diabetic gastroparesis.
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Affiliation(s)
- Purna C. Kashyap
- Enteric NeuroScience Program, Department of Physiology and Biomedical Engineering and Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Kyoung Moo Choi
- Enteric NeuroScience Program, Department of Physiology and Biomedical Engineering and Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Nirjhar Dutta
- Enteric NeuroScience Program, Department of Physiology and Biomedical Engineering and Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - David R. Linden
- Enteric NeuroScience Program, Department of Physiology and Biomedical Engineering and Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Joseph H. Szurszewski
- Enteric NeuroScience Program, Department of Physiology and Biomedical Engineering and Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Simon J. Gibbons
- Enteric NeuroScience Program, Department of Physiology and Biomedical Engineering and Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Gianrico Farrugia
- Enteric NeuroScience Program, Department of Physiology and Biomedical Engineering and Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
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Tharayil VS, Wouters MM, Stanich JE, Roeder JL, Lei S, Beyder A, Gomez-Pinilla PJ, Gershon MD, Maroteaux L, Gibbons SJ, Farrugia G. Lack of serotonin 5-HT2B receptor alters proliferation and network volume of interstitial cells of Cajal in vivo. Neurogastroenterol Motil 2010; 22:462-9, e109-10. [PMID: 19941613 PMCID: PMC2852486 DOI: 10.1111/j.1365-2982.2009.01435.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Normal gastrointestinal motility requires intact networks of interstitial cells of Cajal (ICC). Interstitial cells of Cajal numbers are maintained by a balance between cell loss factors and survival/trophic/growth factors. Activation of 5-HT(2B) receptors expressed on ICC increases ICC proliferation in vitro. It is not known whether 5-HT(2B) receptors on ICC are activated in vivo. The aims of this study were to investigate if adult ICC proliferate, whether the proliferation of ICC in vivo is affected by knocking out the 5-HT(2B) receptor, and if alterations in proliferation affect ICC networks. METHODS Proliferating ICC were identified by immunoreactivity for Ki67 in both the myenteric and deep muscular plexus regions of the jejunum in mice with a targeted insertion of a neomycin resistance cassette into the second coding exon of the htr2b receptor gene. KEY RESULTS Adult ICC do proliferate. The number of proliferating ICC was lower in the myenteric plexus region of Htr2b(-/-) compared to Htr2b(+/+) mice. The volume of Kit-positive ICC was 30% lower in the myenteric plexus region and 40% lower in the deep muscular plexus region in Htr2b(-/-) mice where the number of ICC was also reduced. CONCLUSIONS & INFERENCES Interstitial cells of Cajal proliferate in adult mice and activation of 5-HT(2B) receptors results in increased proliferation of ICC in vivo. Furthermore, lack of 5-HT(2B) receptor signaling reduces the density of ICC networks in mature mice. These data suggest that 5-HT(2B) receptor signaling is required for maintenance of ICC networks, adding 5-HT to the growing number of factors shown to regulate ICC networks.
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Affiliation(s)
- Vivek S. Tharayil
- Enteric Neuroscience Program, Miles and Shirley Fiterman Center for Digestive Diseases, Mayo Clinic, Rochester, MN, USA
| | - Mira M. Wouters
- Enteric Neuroscience Program, Miles and Shirley Fiterman Center for Digestive Diseases, Mayo Clinic, Rochester, MN, USA
| | - Jennifer E. Stanich
- Enteric Neuroscience Program, Miles and Shirley Fiterman Center for Digestive Diseases, Mayo Clinic, Rochester, MN, USA
| | - Jaime L. Roeder
- Enteric Neuroscience Program, Miles and Shirley Fiterman Center for Digestive Diseases, Mayo Clinic, Rochester, MN, USA
| | - Sha Lei
- Enteric Neuroscience Program, Miles and Shirley Fiterman Center for Digestive Diseases, Mayo Clinic, Rochester, MN, USA
| | - Arthur Beyder
- Enteric Neuroscience Program, Miles and Shirley Fiterman Center for Digestive Diseases, Mayo Clinic, Rochester, MN, USA
| | - Pedro J. Gomez-Pinilla
- Enteric Neuroscience Program, Miles and Shirley Fiterman Center for Digestive Diseases, Mayo Clinic, Rochester, MN, USA
| | - Michael D. Gershon
- Department of Pathology and Cell Biology, Columbia University, New York, NY, USA
| | - Luc Maroteaux
- INSERM, U839, Institut du Fer à Moulin, 17 rue du Fer à Moulin, 75005 Paris, France
| | - Simon J. Gibbons
- Enteric Neuroscience Program, Miles and Shirley Fiterman Center for Digestive Diseases, Mayo Clinic, Rochester, MN, USA, Dept of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - Gianrico Farrugia
- Enteric Neuroscience Program, Miles and Shirley Fiterman Center for Digestive Diseases, Mayo Clinic, Rochester, MN, USA, Dept of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
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Qualls-Creekmore E, Tong M, Holmes GM. Gastric emptying of enterally administered liquid meal in conscious rats and during sustained anaesthesia. Neurogastroenterol Motil 2010; 22:181-5. [PMID: 19735361 PMCID: PMC2806511 DOI: 10.1111/j.1365-2982.2009.01393.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Gastric motility studies are frequently conducted with anaesthetized animal models. Some studies on the same animal species have reported differences in vagal control of the stomach that could not be explained solely by slightly different experimental conditions. A possible limitation in the comparison between similar studies relates to the use of different anaesthetic agents. Furthermore, anaesthetic effects may also limit generalizations between mechanistic studies of gastric function and the gastric function of conscious animals. In the present study, we used the [(13)C]-breath test following a liquid mixed-nutrient test meal (Ensure), 1 ml) with the aim to investigate the rate of gastric emptying in animals that were either conscious or anaesthetized with either Inactin or urethane. METHODS One week after determining the maximum (13)CO(2) concentration, time to peak [(13)C] recovery and gastric half emptying time in control, conscious rats, we repeated the experiment in the same rats anaesthetized with Inactin or urethane. KEY RESULTS Our data show that Inactin anaesthesia prolonged the time to peak [(13)C] recovery but did not significantly reduce the maximum (13)CO(2) concentration nor delay gastric half emptying time. Conversely, urethane anaesthesia resulted in a significant slowing of all parameters of gastric emptying as measured by the maximum (13)CO(2) concentration, time to peak [(13)C] recovery and half emptying time. CONCLUSIONS & INFERENCES Our data indicate that Inactin(R) anaesthesia does not significantly affect gastric emptying while urethane anaesthesia profoundly impairs gastric emptying. We suggest that Inactin(R), not urethane, is the more suitable anaesthetic for gastrointestinal research.
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Affiliation(s)
- E Qualls-Creekmore
- Neurotrauma and Nutrition Laboratory, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA 70808, USA
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Qualls-Creekmore E, Tong M, Holmes GM. Time-course of recovery of gastric emptying and motility in rats with experimental spinal cord injury. Neurogastroenterol Motil 2010; 22:62-9, e27-8. [PMID: 19566592 PMCID: PMC2805043 DOI: 10.1111/j.1365-2982.2009.01347.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
We have shown recently that spinal cord injury (SCI) decreases basal gastric contractions 3 days after injury. In the present study we used the [(13)C]-octanoic acid breath test and gastric strain gauges with the aim to investigate the time-course of recovery from postinjury gastric stasis in rats that underwent experimental SCI at the level of the third thoracic (T3) vertebra. Following verification of the [(13)C]-breath test sensitivity in uninjured rats, we conducted our experiments in rats that underwent T3-spinal contusion injury (T3-CI), T3-spinal transection (T3-TX) or laminectomy (control) surgery at 3 days, 1, 3 or 6 weeks postinjury. Our data show that compared to rats that underwent laminectomy, rats that received SCI showed a significant reduction in the cumulative per cent [(13)C] recovery. Although more marked in T3-TX rats, the delayed gastric emptying in T3-CI and T3-TX rats was comparable in the 3 days to 3 weeks period postinjury. At 6 weeks postinjury, the gastric emptying in T3-CI rats recovered to baseline values. Conversely animals in the T3-TX group still show a significantly reduced gastric emptying. Interestingly, the almost complete functional recovery observed in T3-CI rats using the [(13)C]-breath test was not reflected by analysis of spontaneous gastric contractions after SCI. These data indicate that T3-SCI produces a significant reduction in gastric emptying independent of injury severity (T3-CI vs T3-TX) that persists for at least 3 weeks after injury. However, 6 weeks postinjury T3-CI, but not T3-TX, rats begin to demonstrate functional recovery of gastric emptying.
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Affiliation(s)
- E Qualls-Creekmore
- Neurotrauma and Nutrition Laboratory, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA 70808, USA
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Greene JG, Noorian AR, Srinivasan S. Delayed gastric emptying and enteric nervous system dysfunction in the rotenone model of Parkinson's disease. Exp Neurol 2009; 218:154-61. [PMID: 19409896 PMCID: PMC2696567 DOI: 10.1016/j.expneurol.2009.04.023] [Citation(s) in RCA: 117] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2009] [Revised: 04/16/2009] [Accepted: 04/25/2009] [Indexed: 12/14/2022]
Abstract
Gastrointestinal (GI) dysfunction is the most common non-motor symptom of Parkinson's disease (PD). Symptoms of GI dysmotility in PD include early satiety and weight loss from delayed gastric emptying and constipation from impaired colonic transit. Understanding the pathophysiology and treatment of these symptoms in PD patients has been hampered by the lack of investigation into GI symptoms and pathology in PD animal models. We report that the parkinsonian neurotoxin and mitochondrial complex I inhibitor rotenone causes delayed gastric emptying and enteric neuronal dysfunction when administered chronically to rats in the absence of major motor dysfunction or CNS pathology. When examined 22-28 days after initiation of rotenone infusion by osmotic minipump (3 mg/kg/day), 45% of rotenone-treated rats had a profound delay in gastric emptying. Electrophysiological recording of neurally-mediated muscle contraction in isolated colon from rotenone-treated animals confirmed an enteric inhibitory defect associated with rotenone treatment. Rotenone also induced a transient decrease in stool frequency that was associated with weight loss and decreased food and water intake. Pathologically, no alterations in enteric neuron numbers or morphology were apparent in rotenone-treated animals. These results suggest that enteric inhibitory neurons may be particularly vulnerable to the effects of mitochondrial inhibition by parkinsonian neurotoxins and provide evidence that parkinsonian gastrointestinal abnormalities can be modeled in rodents.
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Affiliation(s)
- James G Greene
- Department of Neurology, Emory University School of Medicine, 505H Whitehead Biomedical Research Bldg, 615 Michael St, Atlanta, GA 30322, USA.
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Chen WN, Lan Y, Ke MY. Characteristics of gastric myoelectrical activity in diabetic patients. Shijie Huaren Xiaohua Zazhi 2009; 17:1033-1037. [DOI: 10.11569/wcjd.v17.i10.1033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the gastric myoelectrical activity in diabetic patients in different stages.
METHODS: Fifty-four patients with DM were included in this study, 24 males and 30 females, with a mean age of 59.9 ± 11.6 years. The patients were divided into three groups: group I without both complications and upper gastrointestinal symptoms, group II with complications but without severe upper gastrointestinal symptoms, group III with both complications and severe upper gastrointestinal symptoms. EGG were performed30 minutes preprandial and 60 minutes postprandial.
RESULTS: A total of 74.1% diabetic patients had dysrythmia. In the fasting state, 46.3% had normogastria, 31.5% had bradygastria, and 14.8% had arrhythmia. In postprandial, 46.3% had normogastria, 31.5% had bradygastria, and 14.8% arrhythmia. The power ratio of postprandial and preprandial was elevated in group III compared to group I (1.07 ± 1.17 vs 0.93 ± 0.14, P = 0.022). There was a negative correlation between PR and satiety in group III (r = -0.535, P = 0.040).
CONCLUSION: Bradygastria is significantly more common during the entire period of recording. Different EGG presentations are seen in patients with DM in different conditions.
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Bharucha AE, Camilleri M, Forstrom LA, Zinsmeister AR. Relationship between clinical features and gastric emptying disturbances in diabetes mellitus. Clin Endocrinol (Oxf) 2009; 70:415-20. [PMID: 18727706 PMCID: PMC3899345 DOI: 10.1111/j.1365-2265.2008.03351.x] [Citation(s) in RCA: 119] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND OBJECTIVES Gastric emptying (GE) may be delayed or rapid in diabetes mellitus. We sought to ascertain differences in risk factors or associated features (i.e. diabetic 'phenotype') among patients with diabetes who have rapid, slow or normal GE. METHODS From a database of patients in whom gastrointestinal transit was assessed by scintigraphy, we compared the diabetic phenotype in diabetic patients with rapid, slow and normal GE. RESULTS Of 129 patients, 55 (42%) had normal, 46 (36%) had delayed and 28 (22%) patients had rapid GE. In each GE category, there was an approximately equal number of type 1 and type 2 diabetes. In multivariable analyses, significant weight loss (OR, 2.81; 95% CI, 1.09-7.23) and neuropathy (OR, 3.60; 95% CI, 1.007-12.89) were the risk factors for delayed and rapid GE, respectively. Insulin therapy (OR, 0.08; 95% CI, 0.01-0.53) was associated with a lower risk of rapid compared to normal GE. However, other manifestations or characteristics of the diabetes 'phenotype' (i.e. type and duration of diabetes, glycosylated haemoglobin levels, and extraintestinal complications) were not useful for discriminating normal from delayed or rapid GE. At a specificity of 60%, clinical features were 73% sensitive for discriminating between normal and delayed GE and 80% sensitive for discriminating normal from rapid GE. CONCLUSIONS Diabetes is associated with slow and rapid GE. Because the diabetic phenotype is of limited utility for identifying disordered GE, GE should be assessed in patients with diabetes and gastrointestinal symptoms.
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Affiliation(s)
- Adil E Bharucha
- Clinical Enteric Neuroscience Translational and Epidemiological Research (CENTER) Program, Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA.
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Abstract
There is an array of tests available to measure gastric motility. Some tests measure end points, such as gastric emptying, that result from several different functions, whereas other tests are more specific and test only a single parameter, such as contractility. This article reviews the tests most commonly available in practice and research to evaluate in vivo the gastric functions of emptying, accommodation, contractility, and myoelectrical activity. The rationale for testing, the relative strengths and weaknesses of each test, and technical details are summarized. We also briefly indicate the applications and validations of the tests for use in experimental animal studies.
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Affiliation(s)
- Lawrence A Szarka
- Clinical Enteric Neuroscience Translational and Epidemiological Research, Mayo Clinic, Charlton 8-110, 200 First St. S.W., Rochester, MN 55905, USA
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Choi KM, Gibbons SJ, Nguyen TV, Stoltz GJ, Lurken MS, Ordog T, Szurszewski JH, Farrugia G. Heme oxygenase-1 protects interstitial cells of Cajal from oxidative stress and reverses diabetic gastroparesis. Gastroenterology 2008; 135:2055-64, 2064.e1-2. [PMID: 18926825 PMCID: PMC2796242 DOI: 10.1053/j.gastro.2008.09.003] [Citation(s) in RCA: 183] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2008] [Revised: 08/08/2008] [Accepted: 09/04/2008] [Indexed: 12/02/2022]
Abstract
BACKGROUND & AIMS Diabetic gastroparesis (delayed gastric emptying) is a well-recognized complication of diabetes that causes considerable morbidity and makes glucose control difficult. Interstitial cells of Cajal, which express the receptor tyrosine kinase Kit, are required for normal gastric emptying. We proposed that Kit expression is lost during diabetic gastroparesis due to increased levels of oxidative stress caused by low levels of heme oxygenase-1 (HO-1), an important cytoprotective molecule against oxidative injury. METHODS Gastric emptying was measured in nonobese diabetic mice and correlated with levels of HO-1 expression and activity. Endogenous HO-1 activity was increased by administration of hemin and inhibited by chromium mesoporphyrin. RESULTS In early stages of diabetes, HO-1 was up-regulated in gastric macrophages and remained up-regulated in all mice that were resistant to development of delayed gastric emptying. In contrast, HO-1 did not remain up-regulated in all the mice that developed delayed gastric emptying; expression of Kit and neuronal nitric oxide synthase decreased markedly in these mice. Loss of HO-1 up-regulation increased levels of reactive oxygen species. Induction of HO-1 by hemin decreased reactive oxygen species, rapidly restored Kit and neuronal nitric oxide synthase expression, and completely normalized gastric emptying in all mice. Inhibition of HO-1 activity in mice with normal gastric emptying caused a loss of Kit expression and development of diabetic gastroparesis. CONCLUSIONS Induction of the HO-1 pathway prevents and reverses cellular changes that lead to development of gastrointestinal complications of diabetes. Reagents that induce this pathway might therefore be developed as therapeutics.
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Affiliation(s)
- Kyoung Moo Choi
- Enteric NeuroScience Program, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA, Division of Gastroenterology and Hepatology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Simon J. Gibbons
- Enteric NeuroScience Program, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA, Department of Physiology and Biomedical Engineering, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Tien V. Nguyen
- Enteric NeuroScience Program, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA, Division of Gastroenterology and Hepatology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Gary J. Stoltz
- Enteric NeuroScience Program, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA, Department of Physiology and Biomedical Engineering, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Matthew S. Lurken
- Enteric NeuroScience Program, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA, Division of Gastroenterology and Hepatology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Tamas Ordog
- Enteric NeuroScience Program, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA, Department of Physiology and Biomedical Engineering, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Joseph H. Szurszewski
- Enteric NeuroScience Program, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA, Department of Physiology and Biomedical Engineering, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Gianrico Farrugia
- Enteric NeuroScience Program, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA, Miles and Shirley Fiterman Center for Digestive Diseases, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA, Division of Gastroenterology and Hepatology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA, Department of Physiology and Biomedical Engineering, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
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Matsumoto K, Kimura H, Tashima K, Uchida M, Horie S. Validation of 13C-Acetic Acid Breath Test by Measuring Effects of Loperamide, Morphine, Mosapride, and Itopride on Gastric Emptying in Mice. Biol Pharm Bull 2008; 31:1917-22. [DOI: 10.1248/bpb.31.1917] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Kenjiro Matsumoto
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Josai International University
| | - Hiroshi Kimura
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Josai International University
| | - Kimihito Tashima
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Josai International University
| | - Masayuki Uchida
- Food Science Institute, Division of Research and Development, Meiji Dairies Corporation
| | - Syunji Horie
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Josai International University
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