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Rodriguez L. Testing in functional constipation-What's new and what works. Aliment Pharmacol Ther 2024; 60 Suppl 1:S30-S41. [PMID: 38940015 DOI: 10.1111/apt.17857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/17/2023] [Accepted: 12/14/2023] [Indexed: 06/29/2024]
Abstract
BACKGROUND Constipation is among the most common symptoms prompting a consultation with a paediatric gastroenterologist. While most patients will respond to lifestyle and dietary changes and conventional therapy, some may require diagnostic studies. AIM To review the diagnostics studies used to evaluate children with functional constipation. MATERIALS AND METHODS There is no evidence to support the routine use of abdominal X-rays in the evaluation of paediatric constipation. Colon transit by radiopaque markers (ROM) should be indicated when medical history does not match clinical findings, to guide colon manometry (CM) performance and to discriminate between faecal incontinence from functional constipation and non-retentive faecal incontinence. Colon scintigraphy may be useful as an alternative to ROM. Lumbar spine MRI may be indicated to evaluate for spinal abnormalities. The role of defecography has not been properly evaluated in children. Anorectal manometry in children is indicated primarily to evaluate anal resting pressure, presence and quality of the recto-anal inhibitory reflex and simulated defecation manoeuvres. The CM is indicated to guide surgical interventions after failing medical therapy. CONCLUSIONS The goal of these studies is to identify treatable causes of constipation. Most of these studies are designed to evaluate anatomy, transit and/or colon/rectum motility function and are primarily indicated in those who fail to respond to conventional therapy.
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Affiliation(s)
- Leonel Rodriguez
- Section of Pediatric Gastroenterology, Hepatology and Nutrition, Yale New Haven Children's Hospital, Yale University School of Medicine, New Haven, Connecticut, USA
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Colliard K, Patel D, Nurko S, Rodriguez L. Clinical utility of colonic low-amplitude propagating contractions in children with functional constipation. Neurogastroenterol Motil 2023; 35:e14543. [PMID: 37096634 DOI: 10.1111/nmo.14543] [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: 06/25/2022] [Revised: 01/11/2023] [Accepted: 01/17/2023] [Indexed: 04/26/2023]
Abstract
BACKGROUND Colonic high-amplitude propagating contractions (HAPC) are generally accepted as a marker of neuromuscular integrity. Little is known about low-amplitude propagating contractions (LAPCs); we evaluated their clinical utility in children. METHODS Retrospective review of children with functional constipation undergoing low-resolution colon manometry (CM) recording HAPCs and LAPCs (physiologic or bisacodyl-induced) in three groups: constipation, antegrade colonic enemas (ACE), and ileostomy. Outcome (therapy response) was compared to LAPCs in all patients and within groups. We evaluated LAPCs as potentially representing failed HAPCs. KEY RESULTS A total of 445 patients were included (median age 9.0 years, 54% female), 73 had LAPCs. We found no association between LAPCs and outcome (all patients, p = 0.121), corroborated by logistic regression and excluding HAPCs. We found an association between physiologic LAPCs and outcome that disappears when excluding HAPCs or controlling with logistic regression. We found no association between outcome and bisacodyl-induced LAPCs or LAPC propagation. We found an association between LAPCs and outcome only in the constipation group that cancels with logistic regression and excluding HAPCs (p = 0.026, 0.062, and 0.243, respectively). We found a higher proportion of patients with LAPCs amongst those with absent or abnormally propagated (absent or partially propagated) HAPCs compared to those with fully propagated HAPCs (p = 0.001 and 0.004, respectively) suggesting LAPCs may represent failed HAPCs. CONCLUSIONS/INFERENCES LAPCs do not seem to have added clinical significance in pediatric functional constipation; CM interpretation could rely primarily on the presence of HAPCs. LAPCs may represent failed HAPCs. Larger studies are needed to further validate these findings.
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Affiliation(s)
- Kitzia Colliard
- Center for Motility and Functional Gastrointestinal Disorders, Division of Gastroenterology, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Dhiren Patel
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Cardinal Glennon Children's Medical Center, Saint Louis University School of Medicine, St Louis, Missouri, USA
| | - Samuel Nurko
- Center for Motility and Functional Gastrointestinal Disorders, Division of Gastroenterology, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Leonel Rodriguez
- Center for Motility and Functional Gastrointestinal Disorders, Division of Gastroenterology, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Section of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Yale University School of Medicine, New Haven, Connecticut, USA
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Melanosis Coli Is Not Associated with Colonic Dysmotility Nor Severity of Pediatric Functional Constipation. Dig Dis Sci 2022; 67:3922-3928. [PMID: 34379221 DOI: 10.1007/s10620-021-07191-z] [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: 10/21/2020] [Accepted: 07/21/2021] [Indexed: 12/09/2022]
Abstract
BACKGROUND Sennosides are commonly used for the treatment of constipation and associated with melanosis coli. In the present study, we evaluated the utility of melanosis coli as a marker of severity and its association with colonic motility in children with functional constipation. METHODS Prospective study includes pediatric patients undergoing colonic manometry and colonic biopsies. Demographic data, medication history, surgical history, colonic manometry results (gastrocolonic response to a meal, high-amplitude propagating contractions, and nonpropagating contractions), colonic manometry catheter position, and pathologic results were collected and analyzed. We compared those variables with outcome (need for surgery) between both patient groups (presence or absence of melanosis coli). RESULTS A total of 150 patients were included, median age was 9.9 years (range 2.1-18) and 77 (51.3%) were female, 17 had melanosis. Patients who took sennosides had higher rates of melanosis coli compared to those who did not (adjusted OR 13.88; 95% CI 4.05-47.57; P < 0.001), and we did not find an association between melanosis coli and use of other medications (osmotic laxatives, bisacodyl, lubiprostone), age, gender, weight, and height. We found no significant difference in the results colonic manometry between patients with and without melanosis coli. The rates of surgery for constipation between patients with and without melanosis coli were not statistically different. (OR 3.00; 95% CI 0.45-20.07; P = 0.257). CONCLUSIONS Melanosis coli is associated with sennosides use, but it does not influence colonic motility nor is associated with increased subsequent need for surgery in pediatric functional constipation.
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Chen JH, Collins SM, Milkova N, Pervez M, Nirmalathasan S, Tan W, Hanman A, Huizinga JD. The Sphincter of O'Beirne-Part 2: Report of a Case of Chronic Constipation with Autonomous Dyssynergia. Dig Dis Sci 2021; 66:3529-3541. [PMID: 33462747 DOI: 10.1007/s10620-020-06723-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 11/15/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Chronic constipation can have one or more of many etiologies, and a diagnosis based on symptoms is not sufficient as a basis for treatment, in particular surgery. AIM To investigate the cause of chronic constipation in a patient with complete absence of spontaneous bowel movements. METHODS High-resolution colonic manometry was performed to assess motor functions of the colon, rectum, the sphincter of O'Beirne and the anal sphincters. RESULTS Normal colonic motor patterns were observed, even at baseline, but a prominent high-pressure zone at the rectosigmoid junction, the sphincter of O'Beirne, was consistently present. In response to high-amplitude propagating pressure waves (HAPWs) that were not consciously perceived, the sphincter and the anal sphincters would not relax and paradoxically contract, identified as autonomous dyssynergia. Rectal bisacodyl evoked marked HAPW activity with complete relaxation of the sphincter of O'Beirne and the anal sphincters, indicating that all neural pathways to generate the coloanal reflex were intact but had low sensitivity to physiological stimuli. A retrograde propagating cyclic motor pattern initiated at the sphincter of O'Beirne, likely contributing to failure of content to move into the rectum. CONCLUSIONS Chronic constipation without the presence of spontaneous bowel movements can be associated with normal colonic motor patterns but a highly exaggerated pressure at the rectosigmoid junction: the sphincter of O'Beirne, and failure of this sphincter and the anal sphincters to relax associated with propulsive motor patterns. The sphincter of O'Beirne can be an important part of the pathophysiology of chronic constipation.
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Affiliation(s)
- Ji-Hong Chen
- Department of Medicine-Gastroenterology, Farncombe Family Digestive Health Research Institute, McMaster University, HSC-3H1F, 1200 Main Street West, Hamilton, ON, L8N 3Z5, Canada.
| | - Stephen M Collins
- Department of Medicine-Gastroenterology, Farncombe Family Digestive Health Research Institute, McMaster University, HSC-3H1F, 1200 Main Street West, Hamilton, ON, L8N 3Z5, Canada
| | - Natalija Milkova
- Department of Medicine-Gastroenterology, Farncombe Family Digestive Health Research Institute, McMaster University, HSC-3H1F, 1200 Main Street West, Hamilton, ON, L8N 3Z5, Canada
| | - Maham Pervez
- Department of Medicine-Gastroenterology, Farncombe Family Digestive Health Research Institute, McMaster University, HSC-3H1F, 1200 Main Street West, Hamilton, ON, L8N 3Z5, Canada
| | - Sharjana Nirmalathasan
- Department of Medicine-Gastroenterology, Farncombe Family Digestive Health Research Institute, McMaster University, HSC-3H1F, 1200 Main Street West, Hamilton, ON, L8N 3Z5, Canada
| | - Wei Tan
- Department of Medicine-Gastroenterology, Farncombe Family Digestive Health Research Institute, McMaster University, HSC-3H1F, 1200 Main Street West, Hamilton, ON, L8N 3Z5, Canada
| | - Alicia Hanman
- Department of Medicine-Gastroenterology, Farncombe Family Digestive Health Research Institute, McMaster University, HSC-3H1F, 1200 Main Street West, Hamilton, ON, L8N 3Z5, Canada
| | - Jan D Huizinga
- Department of Medicine-Gastroenterology, Farncombe Family Digestive Health Research Institute, McMaster University, HSC-3H1F, 1200 Main Street West, Hamilton, ON, L8N 3Z5, Canada
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Huizinga JD, Liu L, Barbier A, Chen JH. Distal Colon Motor Coordination: The Role of the Coloanal Reflex and the Rectoanal Inhibitory Reflex in Sampling, Flatulence, and Defecation. Front Med (Lausanne) 2021; 8:720558. [PMID: 34552946 PMCID: PMC8450359 DOI: 10.3389/fmed.2021.720558] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 08/12/2021] [Indexed: 12/12/2022] Open
Affiliation(s)
- Jan D Huizinga
- Department of Medicine, Division of Gastroenterology, Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON, Canada
| | - Lijun Liu
- Department of Medicine, Division of Gastroenterology, Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON, Canada
| | - Ashley Barbier
- Department of Medicine, Division of Gastroenterology, Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON, Canada
| | - Ji-Hong Chen
- Department of Medicine, Division of Gastroenterology, Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON, Canada
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Dinning PG, Wiklendt L, Costa M, Brookes SJH, Amicangelo M, Whitter L, Nurko S. Duodenal and proximal jejunal motility inhibition associated with bisacodyl-induced colonic high-amplitude propagating contractions. Am J Physiol Gastrointest Liver Physiol 2021; 321:G325-G334. [PMID: 34231391 DOI: 10.1152/ajpgi.00209.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Bisacodyl is a stimulant laxative often used in manometric studies of pediatric constipation to determine if it can initiate propulsive high-amplitude propagating contractions (HAPCs). Whereas the effects of bisacodyl infusion on colonic motility are well described, the effects of the drug on other regions of the gut after colonic infusion are not known. The aim of the present study was to characterize the effects of bisacodyl on both colonic and small bowel motility. Twenty-seven children (9.3 ± 1.2 yr) undergoing simultaneous high-resolution antroduodenal and colonic manometry were included. Small bowel and colonic motor patterns were assessed before and after colonic infusion of bisacodyl. Patients were divided into two groups: responders and nonresponders based on the presence of high-amplitude propagating contractions (HAPCs) after bisacodyl infusion. Nineteen patients were responders. A total of 188 postbisacodyl HAPCs was identified with a mean count of 10.4 ± 5.5 (range, 3-22), at a frequency of 0.6 ± 0.2/min and mean amplitude of 119.8 ± 23.6 mmHg. No motor patterns were induced in the small bowel. However, in the 19 responders the onset of HAPCs was associated with a significant decrease in small bowel contractile activity. In the nonresponders, there was no detectable change in small bowel motility after bisacodyl infusion. Bisacodyl-induced HAPCs are associated with a significant reduction in small bowel motility probably mediated by extrinsic sympathetic reflex pathways. This inhibition is potentially related to rectal distension, caused by the HAPC anal propulsion of colonic content.NEW & NOTEWORTHY The present study has shown, for the first time, that the presence of high-amplitude propagating contractions induced by bisacodyl is associated with a significant reduction in small bowel motility. These findings support of possible existence of a reflex pathway that causes inhibition of small bowel motility in response to rectal distension.
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Affiliation(s)
- Phil G Dinning
- College of Medicine & Public Health, Flinders University, Adelaide, Australia.,Department of Surgery and Gastroenterology, Flinders Medical Centre, Adelaide, Australia
| | - Lukasz Wiklendt
- College of Medicine & Public Health, Flinders University, Adelaide, Australia
| | - Marcello Costa
- College of Medicine & Public Health, Flinders University, Adelaide, Australia
| | - Simon J H Brookes
- College of Medicine & Public Health, Flinders University, Adelaide, Australia
| | - Maureen Amicangelo
- Center for Motility and Functional Gastrointestinal Disorders, Boston Children's Hospital, Boston, Massachusetts
| | - Lyneisha Whitter
- Center for Motility and Functional Gastrointestinal Disorders, Boston Children's Hospital, Boston, Massachusetts
| | - Samuel Nurko
- Center for Motility and Functional Gastrointestinal Disorders, Boston Children's Hospital, Boston, Massachusetts
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Yates G, Friedmacher F, Cleeve S, Athanasakos E. Anorectal manometry in pediatric settings: A systematic review of 227 studies. Neurogastroenterol Motil 2021; 33:e14006. [PMID: 33118295 DOI: 10.1111/nmo.14006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 09/03/2020] [Accepted: 09/14/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND There is wide variation in the clinical use of diagnostic tools for children with chronic constipation and functional/structural fecal incontinence (CCFSFI). Anorectal manometry (ARM) is a well-recognized technique to assess the function of the anorectum. PURPOSE Our aim was to perform an up-to-date review on ARM in pediatric patients with CCFSFI, with specific focus on the indication of use and protocol. Variation of its use in pediatrics will be explored. METHODS A systematic search was conducted for empirical studies utilizing ARM with a pediatric sample. A keyword search of literature published in English before July 2018 was conducted and updated to October 2019. Data on demographics, clinical information, study aims, ARM parameters and use of sedation/anesthesia were collected. KEY RESULTS A total of 227 studies were included in this systematic review. The age of study participants at the time of ARM ranged from birth to 18 years. ARM was most commonly used in patients with organic conditions (65%) compared to functional constipation (41%). In almost half [108/227 (48%)] of the studies, ARM was performed awake. The ARM parameters most frequently assessed were the rectoanal inhibitory reflex, which was evaluated in 198/227 studies (87%) and the anal resting pressure [166/227 studies (73%)]. CONCLUSIONS AND INFERENCES This systematic review has highlighted the vast variation of ARM use within pediatrics and the need to strive toward standardization and use of consensus guidelines. We anticipate this will further advance our understanding of the pathophysiological mechanisms involved in children with defecation disorders.
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Affiliation(s)
- Gregory Yates
- Department of Paediatric Surgery, The Royal London Hospital, London, UK.,Barts and The London, School of Medicine and Dentistry, London, UK
| | - Florian Friedmacher
- Department of Paediatric Surgery, The Royal London Hospital, London, UK.,Barts and The London, School of Medicine and Dentistry, London, UK.,Department of Pediatric Surgery, Goethe University Frankfurt, University Hospital Frankfurt, Frankfurt am Main, UK
| | - Stewart Cleeve
- Department of Paediatric Surgery, The Royal London Hospital, London, UK.,Barts and The London, School of Medicine and Dentistry, London, UK
| | - Eleni Athanasakos
- Department of Paediatric Surgery, The Royal London Hospital, London, UK.,Barts and The London, School of Medicine and Dentistry, London, UK
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Vriesman MH, de Jonge CS, Kuizenga-Wessel S, Adler B, Menys A, Nederveen AJ, Stoker J, Benninga MA, Di Lorenzo C. Simultaneous assessment of colon motility in children with functional constipation by cine-MRI and colonic manometry: a feasibility study. Eur Radiol Exp 2021; 5:8. [PMID: 33565002 PMCID: PMC7873179 DOI: 10.1186/s41747-021-00205-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 01/19/2021] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Colonic manometry is the current reference standard for assessing colonic neuromuscular function in children with intractable functional constipation (FC). Recently, cine magnetic resonance imaging (cine-MRI) has been proposed as a non-invasive alternative. We compared colonic motility patterns on cine-MRI with those obtained by manometry in children, by stimulating high-amplitude propagating contractions (HAPCs) with bisacodyl under manometric control while simultaneously acquiring cine-MRI. METHODS After Institutional Review Board approval, adolescents with FC scheduled to undergo colonic manometry were included. A water-perfused 8-lumen catheter was used for colonic manometry recordings. After an intraluminal bisacodyl infusion, cine-MRI sequences of the descending colon were acquired for about 30 min simultaneously with colonic manometry. Manometry recordings were analysed for HAPCs. MRI images were processed with spatiotemporal motility MRI techniques. The anonymised motility results of both techniques were visually compared for the identification of HAPCs in the descending colon. RESULTS Data regarding six patients (three males) were analysed (median age 14 years, range 12-17). After bisacodyl infusion, three patients showed a total of eleven HAPCs with colonic manometry. Corresponding cine-MRI recorded high colonic activity during two of these HAPCs, minimal activity during seven HAPCs, while two HAPCs were not recorded. In two of three patients with absent HAPCs on manometry, colonic activity was recorded with cine-MRI. CONCLUSIONS Simultaneous acquisition of colonic cine-MRI and manometry in children with FC is feasible. Their motility results did not completely overlap in the identification of HAPCs. Research is needed to unravel the role of cine-MRI in this setting.
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Affiliation(s)
- M H Vriesman
- Department of Pediatric Gastroenterology and Nutrition, Emma Children's Hospital/Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.
| | - C S de Jonge
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Location Academic Medical Center, University of Amsterdam, Amsterdam Gastroenterology & Metabolism, Amsterdam, The Netherlands
| | - S Kuizenga-Wessel
- Department of Pediatric Gastroenterology and Nutrition, Emma Children's Hospital/Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - B Adler
- Department of Radiology, Nationwide Children's Hospital, Columbus, OH, USA
| | | | - A J Nederveen
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Location Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - J Stoker
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Location Academic Medical Center, University of Amsterdam, Amsterdam Gastroenterology & Metabolism, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - M A Benninga
- Department of Pediatric Gastroenterology and Nutrition, Emma Children's Hospital/Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - C Di Lorenzo
- Division of Gastroenterology, Hepatology and Nutrition, Nationwide Children's Hospital, Columbus, OH, USA
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9
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Zhu T, Sun X, Zhu D, You Q, Wan X, Meng X, Feng J. Role of daily anal stimulation for intractable functional constipation in infants. WORLD JOURNAL OF PEDIATRIC SURGERY 2020; 3:e000135. [DOI: 10.1136/wjps-2020-000135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/19/2020] [Accepted: 06/03/2020] [Indexed: 11/04/2022] Open
Abstract
ObjectiveFunctional constipation is one of the most common problems in pediatric gastroenterology. The aim of the present study was to evaluate the effectiveness of daily anal stimulation in infants with intractable functional constipation (IFC). Our evaluation was based on clinical improvement and on changes in manometric parameters through time.MethodsInfants with IFC treated between January 2018 and December 2019 were included in this retrospective study. Treatment processing included daily anal stimulation for infants and psychological counseling for parents. All cases underwent a complete intervention program and were evaluated for improvement in symptoms and for changes in anorectal manometry within 1 year of follow-up.ResultsA total of 161 patients were included in this study. Positive response was achieved in all patients. Frequency of defecation, change in stool form and decrease in the defecatory pain were significantly relieved in all infants after intervention. On anorectal manometry, no significant difference was found in the peristaltic frequency of distal rectum before and after treatment. There was a significant increase in the mean amplitude of peristalsis and improvement in the rhythm after intervention. In the 1 year of follow-up, three patients had recurrence of constipation requiring colectomy.ConclusionIn terms of the high clinical efficacy and limited side effects, daily anal stimulation may be included in the initial part of an intervention program for IFC in infants.
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10
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Milkova N, Parsons SP, Ratcliffe E, Huizinga JD, Chen JH. On the nature of high-amplitude propagating pressure waves in the human colon. Am J Physiol Gastrointest Liver Physiol 2020; 318:G646-G660. [PMID: 32068445 PMCID: PMC7191456 DOI: 10.1152/ajpgi.00386.2019] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Characterization of high-amplitude propagating pressure waves (HAPWs or HAPCs) plays a key role in diagnosis of colon dysmotility using any type of colonic manometry. With the introduction of high-resolution manometry, more insight is gained into this most prominent propulsive motor pattern. Here, we use a water-perfused catheter with 84 sensors with intervals between measuring points of 1 cm throughout the colon, for 6-8 h, in 19 healthy subjects. The catheter contained a balloon to evoke distention. We explored as stimuli a meal, balloon distention, oral prucalopride, and bisacodyl injection, with a goal to optimally evoke HAPWs. We developed a quantitative measure of HAPW activity, the "HAPW Index." Our protocol elicited 290 HAPWs. 21% of HAPWs were confined to the proximal colon with an average amplitude of 75.3 ± 3.3 mmHg and an average HAPW Index of 440 ± 58 mmHg·m·s. 29% of HAPWs started in the proximal colon and ended in the transverse or descending colon, with an average amplitude of 87.9 ± 3.1 mmHg and an average HAPW Index of 3,344 ± 356 mmHg·m·s. Forty-nine percent of HAPWs started and ended in the transverse or descending colon with an average amplitude of 109.3 ± 3.3 mmHg and an average HAPW Index of 2,071 ± 195 mmHg·m·s. HAPWs with and without simultaneous pressure waves (SPWs) initiated the colo-anal reflex, often abolishing 100% of anal sphincter pressure. Rectal bisacodyl and proximal balloon distention were the most optimal stimuli to evoke HAPWs. These measures now allow for a confident diagnosis of abnormal motility in patients with colonic motor dysfunction.NEW & NOTEWORTHY High-amplitude propagating pressure waves (HAPWs) were characterized using 84 sensors throughout the entire colon in healthy subjects, taking note of site of origin, site of termination, amplitude, and velocity, and to identify optimal stimuli to evoke HAPWs. Three categories of HAPWs were identified, including the associated colo-anal reflex. Proximal balloon distention and rectal bisacodyl were recognized as reliable stimuli for evoking HAPWs, and a HAPW Index was devised to quantify this essential colonic motor pattern.
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Affiliation(s)
- Natalija Milkova
- McMaster University, Department of Medicine, Division of Gastroenterology, Farncombe Family Digestive Health Research Institute, Hamilton, Ontario, Canada
| | - Sean P. Parsons
- McMaster University, Department of Medicine, Division of Gastroenterology, Farncombe Family Digestive Health Research Institute, Hamilton, Ontario, Canada
| | - Elyanne Ratcliffe
- McMaster University, Department of Medicine, Division of Gastroenterology, Farncombe Family Digestive Health Research Institute, Hamilton, Ontario, Canada
| | - Jan D. Huizinga
- McMaster University, Department of Medicine, Division of Gastroenterology, Farncombe Family Digestive Health Research Institute, Hamilton, Ontario, Canada
| | - Ji-Hong Chen
- McMaster University, Department of Medicine, Division of Gastroenterology, Farncombe Family Digestive Health Research Institute, Hamilton, Ontario, Canada
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11
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Corsetti M, Costa M, Bassotti G, Bharucha AE, Borrelli O, Dinning P, Di Lorenzo C, Huizinga JD, Jimenez M, Rao S, Spiller R, Spencer NJ, Lentle R, Pannemans J, Thys A, Benninga M, Tack J. First translational consensus on terminology and definitions of colonic motility in animals and humans studied by manometric and other techniques. Nat Rev Gastroenterol Hepatol 2019; 16:559-579. [PMID: 31296967 PMCID: PMC7136172 DOI: 10.1038/s41575-019-0167-1] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/30/2019] [Indexed: 12/19/2022]
Abstract
Alterations in colonic motility are implicated in the pathophysiology of bowel disorders, but high-resolution manometry of human colonic motor function has revealed that our knowledge of normal motor patterns is limited. Furthermore, various terminologies and definitions have been used to describe colonic motor patterns in children, adults and animals. An example is the distinction between the high-amplitude propagating contractions in humans and giant contractions in animals. Harmonized terminology and definitions are required that are applicable to the study of colonic motility performed by basic scientists and clinicians, as well as adult and paediatric gastroenterologists. As clinical studies increasingly require adequate animal models to develop and test new therapies, there is a need for rational use of terminology to describe those motor patterns that are equivalent between animals and humans. This Consensus Statement provides the first harmonized interpretation of commonly used terminology to describe colonic motor function and delineates possible similarities between motor patterns observed in animal models and humans in vitro (ex vivo) and in vivo. The consolidated terminology can be an impetus for new research that will considerably improve our understanding of colonic motor function and will facilitate the development and testing of new therapies for colonic motility disorders.
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Affiliation(s)
- Maura Corsetti
- NIHR Nottingham Biomedical Research Centre (BRC), Nottingham University Hospitals NHS Trust and the University of Nottingham, Nottingham, UK
- Nottingham Digestive Diseases Centre, School of Medicine, University of Nottingham, Nottingham, UK
| | - Marcello Costa
- Human Physiology and Centre of Neuroscience, College of Medicine, Flinders University, Bedford Park, South Australia, Australia
| | - Gabrio Bassotti
- Department of Medicine, University of Perugia Medical School, Perugia, Italy
| | - Adil E Bharucha
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - Osvaldo Borrelli
- Department of Paediatric Gastroenterology, Great Ormond Street Hospital for Sick Children, London, UK
| | - Phil Dinning
- Human Physiology and Centre of Neuroscience, College of Medicine, Flinders University, Bedford Park, South Australia, Australia
- Department of Gastroenterology and Surgery, Flinders Medical Centre, Adelaide, South Australia, Australia
| | - Carlo Di Lorenzo
- Department of Pediatric Gastroenterology, Nationwide Children's Hospital, The Ohio State University, Columbus, OH, USA
| | - Jan D Huizinga
- Department of Medicine, Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - Marcel Jimenez
- Department of Cell Physiology, Physiology and Immunology and Neuroscience Institute, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Satish Rao
- Division of Gastroenterology/Hepatology, Augusta University, Augusta, GA, USA
| | - Robin Spiller
- NIHR Nottingham Biomedical Research Centre (BRC), Nottingham University Hospitals NHS Trust and the University of Nottingham, Nottingham, UK
- Nottingham Digestive Diseases Centre, School of Medicine, University of Nottingham, Nottingham, UK
| | - Nick J Spencer
- Discipline of Human Physiology, School of Medicine, Flinders University, Bedford Park, South Australia, Australia
| | - Roger Lentle
- Digestive Biomechanics Group, College of Health, Massey University, Palmerston North, New Zealand
| | - Jasper Pannemans
- Department of Paediatric Gastroenterology and Nutrition, Emma Children's Hospital/Academic Medical Centre, Amsterdam, Netherlands
| | - Alexander Thys
- Department of Paediatric Gastroenterology and Nutrition, Emma Children's Hospital/Academic Medical Centre, Amsterdam, Netherlands
| | - Marc Benninga
- Translational Research Center for Gastrointestinal disorders (TARGID), Department of Clinical and Experimental Medicine, University of Leuven, Leuven, Belgium
| | - Jan Tack
- Department of Paediatric Gastroenterology and Nutrition, Emma Children's Hospital/Academic Medical Centre, Amsterdam, Netherlands.
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12
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Sintusek P, Rybak A, Mutalib M, Thapar N, Borrelli O, Lindley KJ. Preservation of the colo-anal reflex in colonic transection and post-operative Hirschsprung's disease: Potential extrinsic neural pathway. Neurogastroenterol Motil 2019; 31:e13472. [PMID: 30288858 DOI: 10.1111/nmo.13472] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Revised: 07/22/2018] [Accepted: 08/27/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND The colo-anal reflex is a distinct reflex whereby the internal anal sphincter (IAS) relaxes in association with colonic high amplitude propagating contractions (HAPCs) in contrast to the recto-anal inhibitory reflex (RAIR), which is characterized by IAS relaxation upon rectal distension. The RAIR is mediated by the myenteric plexus and therefore absent in Hirschsprung disease. We retrospectively assessed the presence and the characteristics of the colo-anal reflex in children in whom large bowel continuity had been surgically disrupted to assess the role of the extrinsic nervous system in the reflex. METHODS High-resolution (HR) colonic manometry and HR-anorectal manometry were used to evaluate both colonic and anal motor activity in ten children with treatment-unresponsive slow transit constipation (STC), who had previously undergone left-sided colostomy formation with consequent disruption of the bowel continuity, and in two children with Hirschsprung's disease (HSCR), who had previously undergone distal colon resection followed by Duhamel pull-through. Eight children with STC, normal colonic motor activity, and preserved large bowel continuity served as a control group. The presence and characteristics of colo-anal reflex were analyzed. KEY RESULTS In the study group, all patients showed the presence of both normal HAPCs and the presence of the colo-anal reflex. In two cases of HSCR, RAIR was absent; however, both patients demonstrated a colo-anal reflex. CONCLUSIONS In children with disrupted continuity of the colon and/or abnormal anal reflex, the colo-anal reflex is still preserved suggesting that it is mediated by a different pathway from the RAIR, possibly an extrinsic neural pathway.
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Affiliation(s)
- Palittiya Sintusek
- Division of Neurogastroenterology and Motility, Department of Paediatric Gastroenterology, Great Ormond Street Hospital, NHS Foundation Trust, London, UK.,Department of Paediatrics, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Anna Rybak
- Division of Neurogastroenterology and Motility, Department of Paediatric Gastroenterology, Great Ormond Street Hospital, NHS Foundation Trust, London, UK
| | - Mohamed Mutalib
- Department of Paediatric Gastroenterology, Evelina London Children's Hospital, London, UK
| | - Nikhil Thapar
- Division of Neurogastroenterology and Motility, Department of Paediatric Gastroenterology, Great Ormond Street Hospital, NHS Foundation Trust, London, UK
| | - Osvaldo Borrelli
- Division of Neurogastroenterology and Motility, Department of Paediatric Gastroenterology, Great Ormond Street Hospital, NHS Foundation Trust, London, UK
| | - Keith J Lindley
- Division of Neurogastroenterology and Motility, Department of Paediatric Gastroenterology, Great Ormond Street Hospital, NHS Foundation Trust, London, UK
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13
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Abstract
Constipation is one of the most common gastrointestinal symptoms in children. With a median reported prevalence of 12%, it accounts for about 25% of all pediatric gastroenterology consultations. The majority of children experiences functional constipation and do not usually require any diagnostic testing. For those children not responding to conventional medical treatment or in the presence of a more significant clinical picture, however, an accurate instrumental assessment is usually recommended to evaluate either the underlying pathophysiologic mechanisms or a possible organic etiology. The present review analyzes the possible diagnostic investigations for severely constipated children, focusing on their actual indications and their utility in clinical practice. During the last decade, there has been a remarkable increase in our knowledge of normal and abnormal colonic and anorectal motility in children, and a number of different techniques to measure transit and motility have been developed and are discussed in this narrative review.
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14
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Arbizu RA, Nurko S, Heinz N, Amicangelo M, Rodriguez L. Prospective evaluation of same day versus next day colon manometry results in children with medical refractory constipation. Neurogastroenterol Motil 2017; 29:10.1111/nmo.13050. [PMID: 28317231 PMCID: PMC5466533 DOI: 10.1111/nmo.13050] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 01/16/2017] [Accepted: 01/17/2017] [Indexed: 01/11/2023]
Abstract
BACKGROUND We evaluated the change in colon manometry (CM) parameters and interpretation comparing results when the study is performed the same day after the motility catheter is placed under anesthesia or the following day. METHODS CM catheter was placed with colonoscopy under anesthesia and recorded on day 1 and repeated on day 2. Study parameters including motility index during fasting, post-prandial and post-Bisacodyl challenge phase; gastrocolonic response; number, presence and propagation of high amplitude propagating contractions (HAPCs); and, study interpretation were compared between both the days. KEY RESULTS Motility index (fasting, post-Bisacodyl phase, P<.05), HAPC number (10.1 vs 6.6, P=.01) and the proportion of patients having HAPCs (92% vs 70%, P=.002) was significantly higher on day 2 vs day 1. HAPC propagation improved on day 2 vs day 1 (fully propagated, 49% vs 37%; partially propagated, 43% vs 33%; absent 8% vs 30%). Study interpretation changed from day 1 to day 2. On day 1, 37% had a normal study and 63% had an abnormal study. On day 2, all patients with a normal study on day 1 remained normal, and patients with an abnormal study on day 1, 53% remained abnormal and 47% had a normal study. CONCLUSIONS & INFERENCES CM parameters are affected the day the catheter is placed with colonoscopy under anesthesia. The number, presence, and propagation of HAPCs were significantly higher/improved on day 2 compared to day 1. Overall, CM interpretation changed from abnormal to normal from day 1 to day 2 in 47% of the patients.
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Affiliation(s)
- Ricardo A. Arbizu
- Center for Motility and Gastrointestinal Functional Disorders, Division of Gastroenterology & Nutrition, Boston Children’s Hospital, Harvard Medical School
| | - Samuel Nurko
- Center for Motility and Gastrointestinal Functional Disorders, Division of Gastroenterology & Nutrition, Boston Children’s Hospital, Harvard Medical School
| | - Nicole Heinz
- Center for Motility and Gastrointestinal Functional Disorders, Division of Gastroenterology & Nutrition, Boston Children’s Hospital, Harvard Medical School
| | - Maureen Amicangelo
- Center for Motility and Gastrointestinal Functional Disorders, Division of Gastroenterology & Nutrition, Boston Children’s Hospital, Harvard Medical School
| | - Leonel Rodriguez
- Center for Motility and Gastrointestinal Functional Disorders, Division of Gastroenterology & Nutrition, Boston Children’s Hospital, Harvard Medical School
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15
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Del'arco APWT, Magalhães P, Quilici FA. SIM BRASIL STUDY - WOMEN'S GASTROINTESTINAL HEALTH: GASTROINTESTINAL SYMPTOMS AND IMPACT ON THE BRAZILIAN WOMEN QUALITY OF LIFE. ARQUIVOS DE GASTROENTEROLOGIA 2017; 54:115-122. [PMID: 28273276 DOI: 10.1590/s0004-2803.201700000-09] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 01/10/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND Gastrointestinal symptoms seem to affect more women, due to hormonal and emotional issues, impacting the quality of life. The emotional state can affect the bowel functioning through a bidirectional communication system between the gut and the brain involving the neuroendocrine system. Altered bowel functioning and gastrointestinal symptoms can alter quality of life. OBJECTIVE The SIM study aimed to describe, characterize and quantify gastrointestinal symptoms reported by Brazilian women, their causes, feelings and impact. METHODS A structured electronic questionnaire was developed following qualitative phase for semantic formatting, and was administered to volunteer women in ten Brazilian cities. Descriptive and Bayesian statistics analyses were used. RESULTS From the 3029 respondent, 66% reported gastrointestinal symptoms. The most prevalent symptoms were gases (46%), abdominal distention and constipation (43%). The main causes were lifestyle and eating habits. Gastrointestinal symptoms affected quality of life in most women (62%), especially constipation (mood (89%), concentration (88%) and sexual life (79%)). Most common solutions were drinking water, teas, eating foods rich in fiber and probiotics. CONCLUSION Gastrointestinal symptoms are highly prevalent in Brazilian women and negatively impact different aspects of quality of life (mood, concentration and sexuality). The bowel is an important emotional catalyst that can modulate the psychologic behavior. Better understanding of the interaction between the gut and the brain should help in the management of gastrointestinal symptoms to improve women's quality of life.
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16
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Intraluminal pressure patterns in the human colon assessed by high-resolution manometry. Sci Rep 2017; 7:41436. [PMID: 28216670 PMCID: PMC5316981 DOI: 10.1038/srep41436] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 12/13/2016] [Indexed: 02/08/2023] Open
Abstract
Assessment of colonic motor dysfunction is rarely done because of inadequate methodology and lack of knowledge about normal motor patterns. Here we report on elucidation of intraluminal pressure patterns using High Resolution Colonic Manometry during a baseline period and in response to a meal, in 15 patients with constipation, chronically dependent on laxatives, 5 healthy volunteers and 9 patients with minor, transient, IBS-like symptoms but no sign of constipation. Simultaneous pressure waves (SPWs) were the most prominent propulsive motor pattern, associated with gas expulsion and anal sphincter relaxation, inferred to be associated with fast propagating contractions. Isolated pressure transients occurred in most sensors, ranging in amplitude from 5–230 mmHg. Rhythmic haustral boundary pressure transients occurred at sensors about 4–5 cm apart. Synchronized haustral pressure waves, covering 3–5 cm of the colon occurred to create a characteristic intrahaustral cyclic motor pattern at 3–6 cycles/min, propagating in mixed direction. This activity abruptly alternated with erratic patterns resembling the segmentation motor pattern of the small intestine. High amplitude propagating pressure waves (HAPWs) were too rare to contribute to function assessment in most subjects. Most patients, dependent on laxatives for defecation, were able to generate normal motor patterns in response to a meal.
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17
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Rodriguez L, Sood M, Di Lorenzo C, Saps M. An ANMS-NASPGHAN consensus document on anorectal and colonic manometry in children. Neurogastroenterol Motil 2017; 29. [PMID: 27723185 DOI: 10.1111/nmo.12944] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 08/18/2016] [Indexed: 02/08/2023]
Abstract
BACKGROUND Over the last few years, the study of the colon and anorectal function has experienced great technical advances that have facilitated the performance of the tests and have allowed a more detailed characterization of reflexes and motor patterns. As a result, we have achieved a much better understanding of the pathophysiology of children with defecation problems. Anorectal and colonic manometry are now commonly used in all major pediatric referral centers as diagnostic tools and to guide the management of children with intractable constipation and fecal incontinence, particularly when a surgical intervention is being considered. PURPOSE This review highlights some of the recent advances in pediatric colon and anorectal motility testing including indications and preparation for the studies, and how to perform and interpret the tests. This update has been endorsed by the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition (NASPGHAN).
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Affiliation(s)
- L Rodriguez
- Department of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA, USA
| | - M Sood
- Department of Pediatric Gastroenterology, Children's Hospital of Wisconsin, Milwaukee, WI, USA
| | - C Di Lorenzo
- Department of Pediatric Gastroenterology, Hepatology, and Nutrition, Nationwide Children's Hospital, Columbus, OH, USA
| | - M Saps
- Department of Pediatric Gastroenterology, Hepatology, and Nutrition, Nationwide Children's Hospital, Columbus, OH, USA
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18
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Borrelli O, Pescarin M, Saliakellis E, Tambucci R, Quitadamo P, Valitutti F, Rybak A, Lindley KJ, Thapar N. Sequential incremental doses of bisacodyl increase the diagnostic accuracy of colonic manometry. Neurogastroenterol Motil 2016; 28:1747-1755. [PMID: 27335210 DOI: 10.1111/nmo.12876] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 05/09/2016] [Indexed: 12/11/2022]
Abstract
BACKGROUND Colonic manometry is the standard diagnostic modality for evaluating colonic motility in children. Intraluminal bisacodyl is routinely used to trigger high-amplitude propagating contractions (HAPCs), a feature of normal colonic motility. Usually, only a single dose (0.2 mg/kg) is suggested. We retrospectively explored whether the use of an additional higher (0.4 mg/kg) dose of bisacodyl increases the yield of colonic manometry. METHODS In 103 children (median age: 8.8 years, range 3.2-15.7 years) with a diagnosis of slow transit constipation, colonic motility was recorded for 1 h before and 1 h after each of two incremental doses of bisacodyl (low, L, dose: 0.2 mg/kg, max 10 mg; high, H, dose: 0.4 mg/kg, max 20 mg) and the characteristics of HAPCs analyzed. KEY RESULTS High-amplitude propagating contractions were seen in 85 children. H dose significantly increased the proportion of patients with fully propagated HAPCs (H dose: 57/103 [55%], L dose: 27/103 [26%], p < 0.001), paralleling the significant decrease in the proportion with partially propagated HAPCs (H dose: 29/103 [28%], L dose: 47/103 [46%], p < 0.01). Mean HAPC number significantly increased throughout the colon at H compared to L dose (7.2 ± 5.05 vs 5.6 ± 5.1, p < 0.05). Finally, the proportion of patients with normal pressure wave morphology of HAPCs significantly increased with higher dose (H dose: 55/85 [65%], L dose: 27/85 [32%], p < 0.001). CONCLUSIONS & INTERFERENCES An additional higher dose of bisacodyl during colonic manometry improves colonic neuromuscular function suggesting its use might improve interpretation and decision making in children with slow transit constipation.
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Affiliation(s)
- O Borrelli
- Division of Neurogastroenterology & Motility, Department of Pediatric Gastroenterology, Great Ormond Street Hospital, London, UK.
| | - M Pescarin
- Division of Neurogastroenterology & Motility, Department of Pediatric Gastroenterology, Great Ormond Street Hospital, London, UK
| | - E Saliakellis
- Division of Neurogastroenterology & Motility, Department of Pediatric Gastroenterology, Great Ormond Street Hospital, London, UK
| | - R Tambucci
- Division of Neurogastroenterology & Motility, Department of Pediatric Gastroenterology, Great Ormond Street Hospital, London, UK
| | - P Quitadamo
- Division of Neurogastroenterology & Motility, Department of Pediatric Gastroenterology, Great Ormond Street Hospital, London, UK
| | - F Valitutti
- Division of Neurogastroenterology & Motility, Department of Pediatric Gastroenterology, Great Ormond Street Hospital, London, UK
| | - A Rybak
- Division of Neurogastroenterology & Motility, Department of Pediatric Gastroenterology, Great Ormond Street Hospital, London, UK.,Department of Gastroenterology, Hepatology, Nutrition Disorders and Pediatrics, Children's Memorial Health Institute, Warsaw, Poland
| | - K J Lindley
- Division of Neurogastroenterology & Motility, Department of Pediatric Gastroenterology, Great Ormond Street Hospital, London, UK
| | - N Thapar
- Division of Neurogastroenterology & Motility, Department of Pediatric Gastroenterology, Great Ormond Street Hospital, London, UK.,Stem Cells and Regenerative Medicine, UCL Institute of Child Health, London, UK
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Short-Term Effects of Relamorelin on Descending Colon Motility in Chronic Constipation: A Randomized, Controlled Trial. Dig Dis Sci 2016; 61:852-60. [PMID: 26467700 DOI: 10.1007/s10620-015-3876-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 09/04/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND The pentapeptide ghrelin agonist, relamorelin, accelerates colonic transit in patients with chronic constipation (CC). In a murine model, relamorelin decreased excitability of colonic circular smooth muscle cells and colonic intraluminal pressure. AIM To determine short-term effects of relamorelin on colonic motility measured by barostat and multilumen manometry in CC. METHODS In a placebo-controlled, single-dose, double-blind, randomized study in patients with CC, we investigated the motor effects of relamorelin, 100 μg, SQ (12 patients) compared to placebo SQ (six patients). A motility-barostat balloon assembly was used to measure colonic compliance; tone and phasic pressure activity were measured before and after a 1000-kcal milkshake meal (administered ~60 min post-medication). Overall "background" phasic pressure activity was assessed by: average amplitude and motility index (MI = ln[sum amplitudes × #contractions + 1]) over defined periods. High-amplitude propagating contractions (HAPCs) were characterized by amplitude >75 mmHg and propagating contractions >50 mmHg; both were propagated over at least 10 cm. Postprandial HAPCs were the primary end point. The study sample had 80% power to detect an increase of 3.3 HAPCs in the hour post-meal. RESULTS Relamorelin, 100 μg, significantly induced more pre-meal propagated contractions [PCs of either >50 or >75 mmHg] compared to placebo (p < 0.05). Relamorelin also induced more post-meal PCs >50 or >75 mmHg than placebo. Relamorelin did not significantly alter colonic compliance, fasting or postprandial phasic pressure activity (20 min pre-meal fasting MI) or tone, and 60 min postprandial phasic pressure amplitude or MI, or tone. CONCLUSIONS Relamorelin stimulates propagated colonic contractions without alteration of background irregular contractions in CC. ClinicalTrial.Gov registration number: NCT 01781104.
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20
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Müller-Lissner S. Pharmacokinetic and pharmacodynamic considerations for the current chronic constipation treatments. Expert Opin Drug Metab Toxicol 2013; 9:391-401. [PMID: 23425050 DOI: 10.1517/17425255.2013.773972] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Chronic constipation is a frequent condition often treated pharmacologically. The laxatives available belong to very different pharmacologic groups. AREAS COVERED This is a short but comprehensive review of the pharmacology, efficacy and safety of currently available laxatives for chronic constipation. Pertinent publications were retrieved from reference lists of publications and by literature searches via PubMed, lastly performed in November 2012. EXPERT OPINION The most relevant laxative groups are the older representatives osmotic salts, sugars and sugar alcohols, macrogol, anthraquinones, diphenolic laxatives or diphenyl methanes (bisacodyl and sodium picosulfate) and the newer compounds prucalopride, lubiprostone and linaclotide. For all of these laxatives efficacy has been shown in controlled trials. Electrolyte losses do not occur when laxatives are given in therapeutic doses (rare exceptions with phosphate salts and salinic laxatives). The older laxatives are also safe regarding teratogenicity, abortion and lactation. For the newer compounds no respective data are available as yet. It is questionable whether the newer compounds offer advantages over the older ones. Unfortunately, comparative trials are lacking.
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Abstract
While most colonic motor activity is segmental and non-propulsive, colonic high amplitude propagated contractions (HAPC) can transfer colonic contents over long distances and often precede defecation. High amplitude propagated contractions occur spontaneously, in response to pharmacological agents or colonic distention. A subset of patients with slow transit constipation have fewer HAPC. In this issue of Neurogastroenterology and Motility, Rodriguez et al. report that anal relaxation during spontaneous and bisacodyl-induced HAPC exceeds anal relaxation during rectal distention in constipated children undergoing colonic manometry. Moreover, and consistent with a neural mechanism, anal relaxation often precedes arrival of HAPC in the left colon. High amplitude propagated contractions are also used to evaluate the motor response to a meal and pharmacological stimuli (e.g., bisacodyl, neostigmine) and to identify colonic inertia during colonic motility testing in chronic constipation. This editorial comprehensively reviews the characteristics, physiology and pharmacology of HAPC, their assessment by manometry, and relevance to constipation and diarrhea.
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Affiliation(s)
- Adil E. Bharucha
- Division of Gastroenterology and Hepatology, College of Medicine, Mayo Clinic, Rochester, MN
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