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Lee HJ, Lee JB, Park SY, Choi IS, Lee SW. Antimicrobial activity of dominant Ligilactobacillus animalis strains in healthy canine feces and their probiotic potential. FEMS Microbiol Lett 2022; 369:6847740. [PMID: 36434780 DOI: 10.1093/femsle/fnac115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 10/31/2022] [Accepted: 11/24/2022] [Indexed: 11/27/2022] Open
Abstract
The number of companion animals living with humans has continually increased over the last few decades, and so has the interest of owners and stakeholders in the animal food and probiotics industry. Currently, the probiotic bacteria added to the feed of companion animals predominantly originate from the lactic acid bacteria (LAB) used for humans; however, there are differences between the microbiota of humans and that of their companion animals. This study aimed to determine the dominant LAB in dog feces and investigate their functional properties. Ligilactobacillus animalis (formerly called Lactobacillus animalis) was identified as the dominant lactic acid bacterium in dog feces. It displayed various inhibitory effects against pathogenic and enteropathogenic bacteria. This finding suggests that Ligilactobacillus animalis can potentially be used in novel probiotics or as a food additive for dogs.
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Affiliation(s)
- Hong-Jae Lee
- Laboratory of Infectious Diseases and Veterinary Microbiology, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Joong-Bok Lee
- Laboratory of Infectious Diseases and Veterinary Microbiology, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Seung-Yong Park
- Laboratory of Infectious Diseases and Veterinary Microbiology, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - In-Soo Choi
- Laboratory of Infectious Diseases and Veterinary Microbiology, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Sang-Won Lee
- Laboratory of Infectious Diseases and Veterinary Microbiology, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
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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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Husnik R, Fletcher JM, Gaschen L, Gaschen FP. Validation of Ultrasonography for Assessment of Gastric Emptying Time in Healthy Cats by Radionuclide Scintigraphy. J Vet Intern Med 2017; 31:394-401. [PMID: 28220541 PMCID: PMC5354052 DOI: 10.1111/jvim.14674] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 11/23/2016] [Accepted: 01/16/2017] [Indexed: 12/16/2022] Open
Abstract
Background The prevalence of gastric emptying (GE) disorders in cats is unknown due to lack of clinically applicable diagnostic tests. Objectives The principal aim of this study was to assess correlation between scintigraphic and ultrasonographic measurements of GE time (GET) in healthy cats. Additionally, variability of ultrasonographic GET, and correlation between scintigraphy and ultrasonographic parameters of gastric motility were evaluated. Animals Eight healthy domestic shorthair cats. Methods Prospective study. Scintigraphic GET was determined using a solid test meal containing 4 mCi 99mTc‐mebrofenin. Each cat had 3 separate ultrasonographic assessments of GE, performed independent of scintigraphic assessment, after solid test meal consumption. The motility index (MI) of antral contractions was plotted against time and time for each fraction of the area under the MI curve determined. Ultrasonographic GET and MI were correlated to scintigraphic GET. Results Scintigraphic GET (mean ± SD) for 25, 50, and 75% GE was 103 ± 32 minutes, 196 ± 45 minutes, and 288 ± 62 minutes, whereas sonographic GET for 25, 50, and 75% GE was 106 ± 13 minutes, 203 ± 19 minutes, and 305 ± 27 minutes. There was good correlation between scintigraphic and sonographic GET (r = 0.72–0.82) at 45–90% fractional GE and between scintigraphic GET and time of corresponding MI curve fraction (r = 0.78–0.86) at 40–90% fraction of the MI curve. There was moderate intraindividual variability for sonographic GET and MI curve fraction times as well as significant variation among individuals. Conclusions and clinical importance Ultrasonography is a valid alternative to scintigraphy for assessment of solid‐phase GE and allows assessment of postprandial gastric motility in healthy cats.
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Affiliation(s)
- R Husnik
- Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA
| | - J M Fletcher
- Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA
| | - L Gaschen
- Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA
| | - F P Gaschen
- Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA
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Wrigglesworth DJ, Bailey MQ, Colyer A, Hughes KR. PILOT STUDY TO ASSESS MEAL PROGRESSION THROUGH THE GASTROINTESTINAL TRACT OF HABITUATED DOGS DETERMINED BY FLUOROSCOPIC IMAGING WITHOUT SEDATION OR PHYSICAL RESTRAINT. Vet Radiol Ultrasound 2016; 57:565-571. [DOI: 10.1111/vru.12421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 08/15/2016] [Indexed: 11/26/2022] Open
Affiliation(s)
| | - Michael Q. Bailey
- Banfield Pet Hospital; PO Box 13998, 8000 NE Tillamook St Portland OR 97213-0998
| | - Alison Colyer
- WALTHAM® Centre for Pet Nutrition; Waltham on the Wolds; Leicestershire LE14 4RT UK
| | - Kevin R. Hughes
- WALTHAM® Centre for Pet Nutrition; Waltham on the Wolds; Leicestershire LE14 4RT UK
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Whitehead K, Cortes Y, Eirmann L. Gastrointestinal dysmotility disorders in critically ill dogs and cats. J Vet Emerg Crit Care (San Antonio) 2016; 26:234-53. [PMID: 26822390 DOI: 10.1111/vec.12449] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2013] [Revised: 07/21/2015] [Accepted: 08/30/2014] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To review the human and veterinary literature regarding gastrointestinal (GI) dysmotility disorders in respect to pathogenesis, patient risk factors, and treatment options in critically ill dogs and cats. ETIOLOGY GI dysmotility is a common sequela of critical illness in people and small animals. The most common GI motility disorders in critically ill people and small animals include esophageal dysmotility, delayed gastric emptying, functional intestinal obstruction (ie, ileus), and colonic motility abnormalities. Medical conditions associated with the highest risk of GI dysmotility include mechanical ventilation, sepsis, shock, trauma, systemic inflammatory response syndrome, and multiple organ failure. The incidence and pathophysiology of GI dysmotility in critically ill small animals is incompletely understood. DIAGNOSIS A presumptive diagnosis of GI dysmotility is often made in high-risk patient populations following detection of persistent regurgitation, vomiting, lack of tolerance of enteral nutrition, abdominal pain, and constipation. Definitive diagnosis is established via radioscintigraphy; however, this diagnostic tool is not readily available and is difficult to perform on small animals. Other diagnostic modalities that have been evaluated include abdominal ultrasonography, radiographic contrast, and tracer studies. THERAPY Therapy is centered at optimizing GI perfusion, enhancement of GI motility, and early enteral nutrition. Pharmacological interventions are instituted to promote gastric emptying and effective intestinal motility and prevention of complications. Promotility agents, including ranitidine/nizatidine, metoclopramide, erythromycin, and cisapride are the mainstays of therapy in small animals. PROGNOSIS The development of complications related to GI dysmotility (eg, gastroesophageal reflux and aspiration) have been associated with increased mortality risk. Institution of prophylaxic therapy is recommended in high-risk patients, however, no consensus exists regarding optimal timing of initiating prophylaxic measures, preference of treatment, or duration of therapy. The prognosis for affected small animal patients remains unknown.
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Affiliation(s)
- KimMi Whitehead
- Emergency and Critical Care Department, Oradell Animal Hospital, Paramus, NJ, 07452
| | - Yonaira Cortes
- Emergency and Critical Care Department, Oradell Animal Hospital, Paramus, NJ, 07452
| | - Laura Eirmann
- the Nutrition Department (Eirmann), Oradell Animal Hospital, Paramus, NJ, 07452
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Al-Saffar A, Nogueira da Costa A, Delaunois A, Leishman DJ, Marks L, Rosseels ML, Valentin JP. Gastrointestinal Safety Pharmacology in Drug Discovery and Development. Handb Exp Pharmacol 2015; 229:291-321. [PMID: 26091645 DOI: 10.1007/978-3-662-46943-9_12] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Although the basic structure of the gastrointestinal tract (GIT) is similar across species, there are significant differences in the anatomy, physiology, and biochemistry between humans and laboratory animals, which should be taken into account when conducting a gastrointestinal (GI) assessment. Historically, the percentage of cases of drug attrition associated with GI-related adverse effects is small; however, this incidence has increased over the last few years. Drug-related GI effects are very diverse, usually functional in nature, and not limited to a single pharmacological class. The most common GI signs are nausea and vomiting, diarrhea, constipation, and gastric ulceration. Despite being generally not life-threatening, they can greatly affect patient compliance and quality of life. There is therefore a real need for improved and/or more extensive GI screening of candidate drugs in preclinical development, which may help to better predict clinical effects. Models to identify drug effects on GI function cover GI motility, nausea and emesis liability, secretory function (mainly gastric secretion), and absorption aspects. Both in vitro and in vivo assessments are described in this chapter. Drug-induced effects on GI function can be assessed in stand-alone safety pharmacology studies or as endpoints integrated into toxicology studies. In silico approaches are also being developed, such as the gut-on-a-chip model, but await further optimization and validation before routine use in drug development. GI injuries are still in their infancy with regard to biomarkers, probably due to their greater diversity. Nevertheless, several potential blood, stool, and breath biomarkers have been investigated. However, additional validation studies are necessary to assess the relevance of these biomarkers and their predictive value for GI injuries.
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Affiliation(s)
- Ahmad Al-Saffar
- Faculty of Medicine, Department of Medical Sciences, Uppsala University, 751 85, Uppsala, Sweden
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Hatton GB, Yadav V, Basit AW, Merchant HA. Animal Farm: Considerations in Animal Gastrointestinal Physiology and Relevance to Drug Delivery in Humans. J Pharm Sci 2015; 104:2747-76. [DOI: 10.1002/jps.24365] [Citation(s) in RCA: 126] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 12/22/2014] [Accepted: 12/22/2014] [Indexed: 12/30/2022]
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Zhou J, Guo SY, Zhang Y, Li CQ. Human prokinetic drugs promote gastrointestinal motility in zebrafish. Neurogastroenterol Motil 2014; 26:589-95. [PMID: 24533865 DOI: 10.1111/nmo.12306] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Accepted: 12/19/2013] [Indexed: 02/08/2023]
Abstract
BACKGROUND Gastrointestinal (GI) motility disorders are highly prevalent in populations worldwide and the development of effective and safe drug treatments for GI motility disorders has proven challenging. In this study, taking advantage of the transparency of larval zebrafish, we developed a novel zebrafish GI motility model for drug screening and efficacy assessment. METHODS Zebrafish at 5 days postfertilization were fed 10 μg/L Nile red for 16 h, followed by drug treatment for 6 h. Tested drugs were delivered into the zebrafish by direct soaking. Drug effect on zebrafish GI motility was quantitatively assessed using GI tract fluorescent image-based morphometric analysis. During all the periods of the experiments, the zebrafish were not fed any food. KEY RESULTS All four human prokinetic drugs (domperidone, metoclopramide, mosapride, and magnesium sulfate) increased zebrafish GI motility, whereas two drugs that inhibit human GI movement (atropine and anisodamine) and two negative control drugs (glucose and vitamin C) did not show statistically significant effect on zebrafish GI motility. CONCLUSIONS & INFERENCES These results suggest that larval zebrafish motility model developed here is a useful tool for whole-animal in vivo GI transit studies and for assessing prokinetic drugs.
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Affiliation(s)
- J Zhou
- Zhejiang Provincial Key Lab for Technology and Application of Model Organisms, Wenzhou Medical College, Wenzhou, Zhejiang Province, China; Hunter Biotechnology Inc., Transfarland, Hangzhou, Zhejiang Province, China
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Padmanabhan P, Grosse J, Asad ABMA, Radda GK, Golay X. Gastrointestinal transit measurements in mice with 99mTc-DTPA-labeled activated charcoal using NanoSPECT-CT. EJNMMI Res 2013; 3:60. [PMID: 23915679 PMCID: PMC3737085 DOI: 10.1186/2191-219x-3-60] [Citation(s) in RCA: 119] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Accepted: 07/25/2013] [Indexed: 11/10/2022] Open
Abstract
Background Gastrointestinal (GI) disorders are commonly associated with chronic conditions such as diabetes, obesity, and hypertension. Direct consequences are obstipation or diarrhea as opposite aspects of the irritable bowel syndrome, and more indirectly, alteration of appetite, feeling of fullness, flatulence, bloatedness, and eventually leading to altered absorption of nutrients. Moreover, GI retention and passage times have been recognized as important factors in determining the release site and hence the bioavailability of orally administered drugs. To facilitate the understanding of physiological and pathological processes involved, it is necessary to monitor the gut motility in animal models. Here, we describe a method for studying the GI transit time using technetium-labeled activated charcoal diethylenetriaminepentaacetic acid (99mTc-Ch-DTPA) detected by single-photon emission computed tomography (SPECT). Methods Tc-DTPA was adsorbed onto activated charcoal and administered orally to trypan blue-tainted (n = 4) 129SvEv mice (50 to 80 MBq/animal, n = 11). The exact distribution and movement of radioactivity in the gastrointestinal tract was measured at intervals of 1, 3, 6, 12, and 22 h by SPECT-CT. In addition, in order to validate the imaging of GI transient time, loperamide (0.25 mg/animal, n = 3) was used to delay the GI transit. Results The transit time measured as the peak radioactivity occurring in the rectum was 6 to 7 h after gavaging of 99mTc-Ch-DTPA. After 1 h, the bolus had passed into the small intestine and entered the cecum and the colon. At 6 and 8 h, the cecum, the ascending, transverse, and descending colon, and the rectum showed significant labeling. Several pellets were stored in the rectum for defecation. After 22 h, little activity remained in the stomach and none was detected in the transverse colon or other GI locations. In contrast, 6 h after administration of loperamide, only the cecum and part of the transverse colon were labeled. After 22 h, both structures retained significant amount of label. This delay has been verified by non-radiolabeled dye trypan blue GI measurements (n = 4). Conclusion Here, we present the first non-invasive study of mouse GI transit time, allowing clear differentiation between vehicle- and loperamide-treated animals. This technique is useful for the investigation of GI motility in mice.
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Affiliation(s)
- Parasuraman Padmanabhan
- Laboratory of Molecular Imaging, Singapore Bioimaging Consortium (SBIC), A*STAR, 11 Biopolis way, Singapore 138667, Singapore.
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Tsukamoto A, Ohno K, Tsukagoshi T, Maeda S, Nakashima K, Fukushima K, Fujino Y, Tsujimoto H. Real-time ultrasonographic evaluation of canine gastric motility in the postprandial state. J Vet Med Sci 2011; 73:1133-8. [PMID: 21558735 DOI: 10.1292/jvms.11-0044] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Gastric motility is affected by several pathological conditions which may induce upper gastrointestinal clinical symptoms. The pathogenesis of canine gastric motility disorders is poorly understood because of methodological limitations. This study aimed at establishing a simple method for evaluating postprandial gastric motility in dogs. Gastric motility was ultrasonographically assessed in 7 healthy beagles using a technique previously described in humans. The motility index (MI), an indicator of gastric antral motility, was calculated by measuring the area of the gastric antrum in both a contracted and relaxed phase and by counting the number of contractions. The MI was measured every 30 min for 3 hr after feeding and compared with gastric emptying as assessed by a (13)C-octanoic acid breath test. The MI at 30 min had the lowest variability in the 7 dogs (mean SD, 9.77 ± 0.42; coefficient of variance, 4.25%), and a significant correlation was observed with gastric emptying coefficient (R(2)=0.8126, P=0.005) and half-emptying time (R(2)=0.654, P=0.027). When atropine was administered, a significant decrease in the MI at 30 min was observed compared with the control (9.77 ± 0.42 vs. 5.19 ± 0.22, P=0.0003). In conclusion, evaluation of the MI at 30 min is suitable for assessing gastric motility and enables us to assess gastric motility simply in a short time. By using this method, further studies for the pathogenesis of canine gastric motility disorders are warranted.
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Affiliation(s)
- Atsushi Tsukamoto
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1–1–1 Yayoi, Bunkyo-ku, Tokyo 113–8657, Japan
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Field HA, Kelley KA, Martell L, Goldstein AM, Serluca FC. Analysis of gastrointestinal physiology using a novel intestinal transit assay in zebrafish. Neurogastroenterol Motil 2009; 21:304-12. [PMID: 19140958 DOI: 10.1111/j.1365-2982.2008.01234.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Gastrointestinal function depends upon coordinated contractions to mix and propel food through the gut. Deregulation of these contractions leads to alterations in the speed of material transit through the gut, with potentially significant consequences. We have developed a method for visualizing intestinal transit, the physiological result of peristaltic contractions, in larval zebrafish. This method allows direct, non-invasive observation of luminal content as it traverses the gut. Using this method, we characterized gastrointestinal transit in zebrafish larvae at 7 days postfertilization. In addition, we used this transit assay to assess the physiological consequences of reduced or absent enteric neurones on intestinal transit in larval zebrafish. This may facilitate the use of the zebrafish for investigating the effect of compounds and candidate genes on gastrointestinal motility.
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Affiliation(s)
- H A Field
- Developmental and Molecular Pathways, Novartis Institutes for BioMedical Research, Cambridge, MA 02139, USA
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Song GQ, Hou X, Yang B, Sun Y, Qian W, Chen JDZ. A novel method of 2-channel dual-pulse gastric electrical stimulation improves solid gastric emptying in dogs. Surgery 2007; 143:72-8. [PMID: 18154935 DOI: 10.1016/j.surg.2007.07.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2006] [Revised: 06/21/2007] [Accepted: 07/01/2007] [Indexed: 12/27/2022]
Abstract
BACKGROUND Gastric electrical stimulation (GES) is known to improve vomiting with short pulses, normalize dysrhythmia with long pulses, and accelerate gastric emptying with 2 channels. The aim of this study was to assess the effects of a new method GES, namely, 2-channel GES with dual pulses on gastric emptying of solids as well as gastric dysrhythmia and emetic responses. METHODS Seven beagle dogs implanted with 4 pairs of electrodes were studied. A novel method of GES was proposed: 2-channel dual-pulse GES in which each stimulus was composed of a short pulse followed with a long pulse, and stimulation was delivered at 2 different locations. The study was performed to test the effects of this new method of GES on vasopressin-induced delayed gastric emptying of solids, gastric dysrhythmia, and emetic responses. RESULTS (1) Vasopressin-induced gastric dysrhythmia and emetic responses, as well as delayed gastric emptying of solids (P < .01). (2) Two-channel, but not 1-channel, dual-pulse GES was able to accelerate vasopressin-induced delayed gastric emptying of solids. (3) Both 1- and 2-channel dual-pulse GES was capable of improving dysrhythmia and emetic responses (P < .01). CONCLUSIONS The novel method of 2-channel dual-pulse GES is capable of accelerating gastric emptying of solids and improving dysrhythmia and emetic responses induced by vasopressin. This new method of GES may have a potential for gastroparesis.
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Affiliation(s)
- Geng-Qing Song
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
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Whited KL, Hornof WJ, Garcia T, Bohan DC, Larson RF, Raybould HE. A non-invasive method for measurement of gastric emptying in mice: effects of altering fat content and CCK A receptor blockade. Neurogastroenterol Motil 2004; 16:421-7. [PMID: 15305997 DOI: 10.1111/j.1365-2982.2004.00529.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The ability to make repetitive non-invasive measurements of gastric emptying of nutritive solids in awake, unstressed mice is highly desirable. The aim of the present study was to develop such a technique using nuclear scintigraphy and diets differing in triglyceride content. Awake mice were accustomed to light restraint and to feeding cooked, egg white (0.00 g fat g(-1)), whole egg (0.10 g fat g(-1)), or egg yolk (0.31 g fat g(-1)). Gastric emptying of each diet was measured by labelling the test meals with Technetium(99m) Mebrofenin and using a conventional gamma camera equipped with a high resolution, parallel hole collimator. Gastric emptying of cooked whole egg was also determined following administration of either vehicle or CCK A receptor antagonist, devazepide. The half-emptying time (t(1/2)) significantly increased with increasing triglyceride content from 14 +/- 5 min to 51 +/- 6 min and 82 +/- 4 min for egg white, whole egg and egg yolk, respectively. Administration of devazepide significantly decreased t(1/2) of whole egg to 28 +/- 2 min. These results demonstrate the sensitivity and predictability of this technique in mice and importantly, provide an opportunity to alter the macronutrient or caloric content of the meal to determine effects on gastric emptying.
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Affiliation(s)
- K L Whited
- Department of Anatomy, Physiology and Cell Biology, UC Davis School of Veterinary Medicine, Davis, CA 95616, USA
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