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Butt MF, Groen J, Jonker CAL, Burton-Murray H, Carrington EV, Chang L, Di Lorenzo C, Ellis J, Escher JC, Gorter RR, Jewell S, Karrento K, Koster EC, Nurko S, Rosen R, van Tilburg MAL, Zarate-Lopez N, Corsetti M, Benninga MA. Pediatric to adult transition care in neurogastroenterology and motility: A position paper from the American Neurogastroenterology and Motility Society and European Society of Neurogastroenterology and Motility. Neurogastroenterol Motil 2024:e14869. [PMID: 39038114 DOI: 10.1111/nmo.14869] [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: 04/26/2024] [Accepted: 07/02/2024] [Indexed: 07/24/2024]
Abstract
Transition services-programs that support adolescents and young adults (AYAs) as they move from a child-centered to a more autonomous, adult-orientated healthcare system-have been associated with improved short- and long-term healthcare outcomes. Unfortunately, there is a paucity of evidence exploring transition services within the neurogastroenterology and motility (NGM) field. The overall aim of this article, endorsed by the American Neurogastroenterology and Motility Society and European Society of Neurogastroenterology and Motility, is to promote a discussion about the role of transition services for patients with NGM disorders. The AYAs addressed herein are those who have: (a) a ROME positive disorder of gut-brain interaction (DGBI), (b) a primary or secondary motility disorder (including those with motility disorders that have been surgically managed), or (c) an artificial feeding requirement (parenteral or enteral tube feeding) to manage malnutrition secondary to categories (a) or (b). The issues explored in this position paper include the specific physical and psychological healthcare needs of patients with NGM disorders; key healthcare professionals who should form part of a secondary care NGM transition service; the triadic relationship between healthcare professionals, caregivers, and patients; approaches to selecting patients who may benefit most from transition care; methods to assess transition readiness; and strategies with which to facilitate transfer of care between healthcare professionals. Key areas for future research are also addressed, including the construction of NGM-specific transition readiness questionnaires, tools to assess post-transfer healthcare outcomes, and educational programs to train healthcare professionals about transition care in NGM.
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Affiliation(s)
- Mohsin F Butt
- Nottingham Digestive Diseases Centre, Translational Medical Sciences, School of Medicine, University of Nottingham, Nottingham, UK
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota, USA
| | - Jip Groen
- Emma Children's Hospital-Amsterdam UMC, Location University of Amsterdam, Pediatric Gastroenterology, Amsterdam, The Netherlands
| | - Charlotte A L Jonker
- Emma Children's Hospital-Amsterdam UMC, Location University of Amsterdam, Pediatric Gastroenterology, Amsterdam, The Netherlands
| | - Helen Burton-Murray
- Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
| | - Emma V Carrington
- Department of Surgery and Cancer, Imperial College NHS Trust, London, UK
| | - Lin Chang
- G. Oppenheimer Center for Neurobiology of Stress at University of California, Los Angeles, Los Angeles, California, USA
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at University of California, Los Angeles, California, USA
| | - Carlo Di Lorenzo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Jacob Ellis
- Department of Child and Adolescent Psychological Medicine, University College London Hospitals NHS Foundation Trust, London, UK
| | - Johanna C Escher
- Department of Pediatric Gastroenterology, Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Ramon R Gorter
- Department of Pediatric Surgery, Emma Children's Hospital, Amsterdam UMC location University of Amsterdam, Amsterdam, The Netherlands
| | | | - Katja Karrento
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Emma C Koster
- Division of Dietetics, Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Samuel Nurko
- Division of Gastroenterology, Center for Motility and Functional Gastrointestinal Disorders, Children's Hospital Boston, Boston, Massachusetts, USA
| | - Rachel Rosen
- Division of Gastroenterology, Center for Motility and Functional Gastrointestinal Disorders, Children's Hospital Boston, Boston, Massachusetts, USA
| | - Miranda A L van Tilburg
- Graduate Medical Education, Cape Fear Valley Health, Fayetteville, North Carolina, USA
- Joan C Edwards School of Medicine, Marshall University, Huntington, West Virginia, USA
- Department of Gastroenterology and Hepatology, University of North Carolina, Chapel Hill, North Carolina, USA
- School of Social Work, University of Washington, Seattle, Washington, USA
| | - Natalia Zarate-Lopez
- Department of Gastroenterology and Gastrointestinal Physiology, University College London Hospitals NHS Foundation Trust, London, UK
- Division of Surgery and Interventional Science, University College London, London, UK
| | - Maura Corsetti
- Nottingham Digestive Diseases Centre, Translational Medical Sciences, School of Medicine, University of Nottingham, Nottingham, UK
| | - Marc A Benninga
- Emma Children's Hospital-Amsterdam UMC, Location University of Amsterdam, Pediatric Gastroenterology, Amsterdam, The Netherlands
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Koh SD, Drumm BT, Lu H, Kim HJ, Ryoo SB, Kim HU, Lee JY, Rhee PL, Wang Q, Gould TW, Heredia D, Perrino BA, Hwang SJ, Ward SM, Sanders KM. Propulsive colonic contractions are mediated by inhibition-driven poststimulus responses that originate in interstitial cells of Cajal. Proc Natl Acad Sci U S A 2022; 119:e2123020119. [PMID: 35446689 PMCID: PMC9170151 DOI: 10.1073/pnas.2123020119] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 03/17/2022] [Indexed: 12/23/2022] Open
Abstract
The peristaltic reflex is a fundamental behavior of the gastrointestinal (GI) tract in which mucosal stimulation activates propulsive contractions. The reflex occurs by stimulation of intrinsic primary afferent neurons with cell bodies in the myenteric plexus and projections to the lamina propria, distribution of information by interneurons, and activation of muscle motor neurons. The current concept is that excitatory cholinergic motor neurons are activated proximal to and inhibitory neurons are activated distal to the stimulus site. We found that atropine reduced, but did not block, colonic migrating motor complexes (CMMCs) in mouse, monkey, and human colons, suggesting a mechanism other than one activated by cholinergic neurons is involved in the generation/propagation of CMMCs. CMMCs were activated after a period of nerve stimulation in colons of each species, suggesting that the propulsive contractions of CMMCs may be due to the poststimulus excitation that follows inhibitory neural responses. Blocking nitrergic neurotransmission inhibited poststimulus excitation in muscle strips and blocked CMMCs in intact colons. Our data demonstrate that poststimulus excitation is due to increased Ca2+ transients in colonic interstitial cells of Cajal (ICC) following cessation of nitrergic, cyclic guanosine monophosphate (cGMP)-dependent inhibitory responses. The increase in Ca2+ transients after nitrergic responses activates a Ca2+-activated Cl− conductance, encoded by Ano1, in ICC. Antagonists of ANO1 channels inhibit poststimulus depolarizations in colonic muscles and CMMCs in intact colons. The poststimulus excitatory responses in ICC are linked to cGMP-inhibited cyclic adenosine monophosphate (cAMP) phosphodiesterase 3a and cAMP-dependent effects. These data suggest alternative mechanisms for generation and propagation of CMMCs in the colon.
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Affiliation(s)
- Sang Don Koh
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, NV 89557
| | - Bernard T. Drumm
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, NV 89557
| | - Hongli Lu
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, NV 89557
| | - Hyun Jin Kim
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, NV 89557
| | - Seung-Bum Ryoo
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, NV 89557
| | - Heung-Up Kim
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, NV 89557
| | - Ji Yeon Lee
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, NV 89557
| | - Poong-Lyul Rhee
- Division of Gastroenterology, Department of Medicine, Sungkyunkwan University School of Medicine, Samsung Medical Center, Gangnam-Gu, Seoul, Korea 135-710
| | - Qianqian Wang
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, NV 89557
| | - Thomas W. Gould
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, NV 89557
| | - Dante Heredia
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, NV 89557
| | - Brian A. Perrino
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, NV 89557
| | - Sung Jin Hwang
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, NV 89557
| | - Sean M. Ward
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, NV 89557
| | - Kenton M. Sanders
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, NV 89557
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Paediatric Intestinal Pseudo-obstruction: Evidence and Consensus-based Recommendations From an ESPGHAN-Led Expert Group. J Pediatr Gastroenterol Nutr 2018; 66:991-1019. [PMID: 29570554 DOI: 10.1097/mpg.0000000000001982] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Chronic intestinal pseudo-obstructive (CIPO) conditions are considered the most severe disorders of gut motility. They continue to present significant challenges in clinical care despite considerable recent progress in our understanding of pathophysiology, resulting in unacceptable levels of morbidity and mortality. Major contributors to the disappointing lack of progress in paediatric CIPO include a dearth of clarity and uniformity across all aspects of clinical care from definition and diagnosis to management. In order to assist medical care providers in identifying, evaluating, and managing children with CIPO, experts in this condition within the European Society for Pediatric Gastroenterology, Hepatology, and Nutrition as well as selected external experts, were charged with the task of developing a uniform document of evidence- and consensus-based recommendations. METHODS Ten clinically relevant questions addressing terminology, diagnostic, therapeutic, and prognostic topics were formulated. A systematic literature search was performed from inception to June 2017 using a number of established electronic databases as well as repositories. The approach of the Grading of Recommendations Assessment, Development and Evaluation (GRADE) was applied to evaluate outcome measures for the research questions. Levels of evidence and quality of evidence were assessed using the classification system of the Oxford Centre for Evidence-Based Medicine (diagnosis) and the GRADE system (treatment). Each of the recommendations were discussed, finalized, and voted upon using the nominal voting technique to obtain consensus. RESULTS This evidence- and consensus-based position paper provides recommendations specifically for chronic intestinal pseudo-obstruction in infants and children. It proposes these be termed paediatric intestinal pseudo-obstructive (PIPO) disorders to distinguish them from adult onset CIPO. The manuscript provides guidance on the diagnosis, evaluation, and treatment of children with PIPO in an effort to standardise the quality of clinical care and improve short- and long-term outcomes. Key recommendations include the development of specific diagnostic criteria for PIPO, red flags to alert clinicians to the diagnosis and guidance on the use of available investigative modalities. The group advocates early collaboration with expert centres where structured diagnosis and management is guided by a multi-disciplinary team, and include targeted nutritional, medical, and surgical interventions as well as transition to adult services. CONCLUSIONS This document is intended to be used in daily practice from the time of first presentation and definitive diagnosis PIPO through to the complex management and treatment interventions such as intestinal transplantation. Significant challenges remain to be addressed through collaborative clinical and research interactions.
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Pediatric Motility Disorders. CURRENT PEDIATRICS REPORTS 2017. [DOI: 10.1007/s40124-017-0137-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Brooks AJ, Smith PJ, Cohen R, Collins P, Douds A, Forbes V, Gaya DR, Johnston BT, McKiernan PJ, Murray CD, Sebastian S, Smith M, Whitley L, Williams L, Russell RK, McCartney SA, Lindsay JO. UK guideline on transition of adolescent and young persons with chronic digestive diseases from paediatric to adult care. Gut 2017; 66:988-1000. [PMID: 28228488 PMCID: PMC5532456 DOI: 10.1136/gutjnl-2016-313000] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 01/10/2017] [Accepted: 01/24/2017] [Indexed: 12/12/2022]
Abstract
The risks of poor transition include delayed and inappropriate transfer that can result in disengagement with healthcare. Structured transition care can improve control of chronic digestive diseases and long-term health-related outcomes. These are the first nationally developed guidelines on the transition of adolescent and young persons (AYP) with chronic digestive diseases from paediatric to adult care. They were commissioned by the Clinical Services and Standards Committee of the British Society of Gastroenterology under the auspices of the Adolescent and Young Persons (A&YP) Section. Electronic searches for English-language articles were performed with keywords relating to digestive system diseases and transition to adult care in the Medline (via Ovid), PsycInfo (via Ovid), Web of Science and CINAHL databases for studies published from 1980 to September 2014. The quality of evidence and grading of recommendations was appraised using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) system. The limited number of studies in gastroenterology and hepatology required the addition of relevant studies from other chronic diseases to be included.These guidelines deal specifically with the transition of AYP living with a diagnosis of chronic digestive disease and/or liver disease from paediatric to adult healthcare under the following headings;1. Patient populations involved in AYP transition2. Risks of failing transition or poor transition3. Models of AYP transition4. Patient and carer/parent perspective in AYP transition5. Surgical perspective.
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Affiliation(s)
- Alenka J Brooks
- Academic Department of Gastroenterology, Sheffield Teaching Hospitals NHS Foundation Trust, Royal Hallamshire Hospital, Sheffield, UK
| | - Philip J Smith
- Academic Department of Gastroenterology, Sheffield Teaching Hospitals NHS Foundation Trust, Royal Hallamshire Hospital, Sheffield, UK,Centre for Gastroenterology and Hepatology, Royal Free Hospital, London, UK
| | | | - Paul Collins
- Royal Liverpool University Hospital, Liverpool, UK
| | - Andrew Douds
- Queen Elizabeth Hospital NHS Foundation Trust, University of East Anglia,King's Lynn, Norfolk, UK
| | - Valda Forbes
- Sheffield Children's Hospital NHS Foundation Trust, Sheffield, UK
| | | | - Brian T Johnston
- Deparment of Gastroenterology, Royal Victoria Hospital, Belfast, UK
| | | | - Charles D Murray
- Centre for Gastroenterology and Hepatology, Royal Free Hospital, London, UK
| | - Shaji Sebastian
- NIHR LCRN (Y&H) Gastroenterology Speciality Co-Lead, Hull & East Yorkshire NHS Trust, Hull, UK
| | - Monica Smith
- Queen Elizabeth Hospital Birmingham NHS Foundation Trust, Birmingham, UK
| | - Lisa Whitley
- GI Services Division, University College London Hospital, London, UK
| | | | - Richard K Russell
- Department of Paediatric Gastroenterology, The Royal Hospital for Children Glasgow, Glasgow, UK
| | | | - James O Lindsay
- Bart's Health NHS Trust, The Royal London Hospital, London, UK,Centre for Immunology and Infectious Disease, Blizard Institute, Barts and the London School of Medicine, Queen Mary University of London, London, UK
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Edeani F, Malik A, Kaul A. Characterization of Esophageal Motility Disorders in Children Presenting With Dysphagia Using High-Resolution Manometry. Curr Gastroenterol Rep 2017; 19:13. [PMID: 28365899 DOI: 10.1007/s11894-017-0549-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
PURPOSE OF REVIEW The Chicago classification was based on metrics derived from studies in asymptomatic adult subjects. Our objectives were to characterize esophageal motility disorders in children and to determine whether the spectrum of manometric findings is similar between the pediatric and adult populations. RECENT FINDINGS Studies have suggested that the metrics utilized in manometric diagnosis depend on age, size, and manometric assembly. This would imply that a different set of metrics should be used for the pediatric population. There are no standardized and generally accepted metrics for use in the pediatric population, though there have been attempts to establish metrics specific to this population. Overall, we found that the distribution of esophageal motility disorders in children was like that described in adults using the Chicago classification. This analysis will serve as a prequel to follow-up studies exploring the individual metrics for variability among patients, with the objective of establishing novel metrics for the pediatric population.
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Affiliation(s)
- Francis Edeani
- Department of Internal Medicine, Good Samaritan Hospital, Cincinnati, OH, 45220, USA
| | - Adeel Malik
- Neurogastroenterology and Motility Disorders Program, Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH, 45229, USA
| | - Ajay Kaul
- Neurogastroenterology and Motility Disorders Program, Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH, 45229, USA.
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Smith TK, Park KJ, Hennig GW. Colonic migrating motor complexes, high amplitude propagating contractions, neural reflexes and the importance of neuronal and mucosal serotonin. J Neurogastroenterol Motil 2014; 20:423-46. [PMID: 25273115 PMCID: PMC4204412 DOI: 10.5056/jnm14092] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 09/05/2014] [Accepted: 09/08/2014] [Indexed: 12/15/2022] Open
Abstract
The colonic migrating motor complex (CMMC) is a critical neurally mediated rhythmic propulsive contraction observed in the large intestine of many mammals. It seems to be equivalent to the high amplitude propagating contractions (HAPCs) in humans. This review focuses on the probable neural mechanisms involved in producing the CMMC or HAPC, their likely dependence on mucosal and neuronal serotonin and pacemaker insterstitial cells of Cajal networks and how intrinsic neural reflexes affect them. Discussed is the possibility that myenteric 5-hydroxytryptamine (5-HT) neurons are not only involved in tonic inhibition of the colon, but are also involved in generating the CMMC and modulation of the entire enteric nervous system, including coupling motility to secretion and blood flow. Mucosal 5-HT appears to be important for the initiation and effective propagation of CMMCs, although this mechanism is a longstanding controversy since the 1950s, which we will address. We argue that the slow apparent propagation of the CMMC/HAPC down the colon is unlikely to result from a slowly conducting wave front of neural activity, but more likely because of an interaction between ascending excitatory and descending (serotonergic) inhibitory neural pathways interacting both within the myenteric plexus and at the level of the muscle. That is, CMMC/HAPC propagation appears to be similar to esophageal peristalsis. The suppression of inhibitory (neuronal nitric oxide synthase) motor neurons and mucosal 5-HT release by an upregulation of prostaglandins has important implications in a number of gastrointestinal disorders, especially slow transit constipation.
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Affiliation(s)
- Terence K Smith
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, Nevada, USA
| | - Kyu Joo Park
- Department of Surgery, School of Medicine, Seoul National University, Seoul Korea
| | - Grant W Hennig
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, Nevada, USA
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Singendonk MMJ, Kritas S, Cock C, Ferris L, McCall L, Rommel N, van Wijk MP, Benninga MA, Moore D, Omari TI. Applying the Chicago Classification criteria of esophageal motility to a pediatric cohort: effects of patient age and size. Neurogastroenterol Motil 2014; 26:1333-41. [PMID: 25053225 DOI: 10.1111/nmo.12397] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 06/16/2014] [Indexed: 02/08/2023]
Abstract
BACKGROUND Applying the 2012 Chicago Classification (CC) of esophageal motility disorders to pediatric patients is problematic as it relies upon adult-derived criteria. As shorter esophageal length and smaller esophago-gastric junction (EGJ) diameter may influence CC metrics, we explored the potential for age- and size-adjustment of diagnostic criteria. METHODS We evaluated 76 high-resolution solid state impedance-manometry recordings in children referred for manometry (32M; mean age 9 ± 1 years) and 25 recordings from healthy adult subjects (7M; mean age 36 ± 2 years). CC metrics; integrated relaxation pressure (IRP4s, mmHg), contractile front velocity (CFV, cm/s), distal contractile integral (DCI, mmHg cm/s), distal latency (DL, s), and peristaltic break size (BS, cm) were derived for 10 liquid swallows using CC analysis software. Effects of age and size were examined using regression analysis. KEY RESULTS Younger patient age and shorter size correlated significantly with greater IRP4s (p < 0.05), shorter DL (p < 0.001) and smaller BS (p < 0.05). Standard diagnostic CC criteria were adjusted using the slope of the linear regression equation to define the age/size-related trend. Sixty-six percent of the pediatric cohort showed abnormal motility when applying standard CC criteria. Adjustment for age and size reduced this to 50% and 53% respectively, with the largest reduction being in the IRP4s- and DL-dependent disorders EGJ outflow obstruction and diffuse esophageal spasm (13% to 7% and 5% and 14% to 1 and 5%, respectively). CONCLUSIONS & INFERENCES CC metrics, particularly IRP4s and DL, are age and size dependent, and therefore, require adjustment to improve accuracy of diagnosis of esophageal motility disorders in children.
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Affiliation(s)
- M M J Singendonk
- Department of Pediatric Gastroenterology and Nutrition, Emma Children's Hospital AMC, Amsterdam, The Netherlands; Gastroenterology Unit, Women's and Children's Health Network, North Adelaide, Australia
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Heredia DJ, Gershon MD, Koh SD, Corrigan RD, Okamoto T, Smith TK. Important role of mucosal serotonin in colonic propulsion and peristaltic reflexes: in vitro analyses in mice lacking tryptophan hydroxylase 1. J Physiol 2013; 591:5939-57. [PMID: 24127620 DOI: 10.1113/jphysiol.2013.256230] [Citation(s) in RCA: 117] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Although there is general agreement that mucosal 5-hydroxytryptamine (5-HT) can initiate peristaltic reflexes in the colon, recent studies have differed as to whether or not the role of mucosal 5-HT is critical. We therefore tested the hypothesis that the secretion of 5-HT from mucosal enterochromaffin (EC) cells is essential for the manifestation of murine colonic peristaltic reflexes. To do so, we analysed the mechanisms underlying faecal pellet propulsion in isolated colons of mice lacking tryptophan hydroxylase 1 (Tph1(-/-) mice), which is the rate-limiting enzyme in the biosynthesis of mucosal but not neuronal 5-HT. We used video analysis of faecal pellet propulsion, tension transducers to record colonic migrating motor complexes (CMMCs) and intracellular microelectrodes to record circular muscle activity occurring spontaneously or following intraluminal distension. When compared with control (Tph1(+/+)) mice, Tph1(-/-) animals exhibited: (1) an elongated colon; (2) larger faecal pellets; (3) orthograde propulsion followed by retropulsion (not observed in Tph1(+/+) colon); (4) slower in vitro propulsion of larger faecal pellets (28% of Tph1(+/+)); (5) CMMCs that infrequently propagated in an oral to anal direction because of impaired descending inhibition; (6) reduced CMMCs and inhibitory responses to intraluminal balloon distension; (7) an absence of reflex activity in response to mucosal stimulation. In addition, (8) thin pellets that propagated along the control colon failed to do so in Tph1(-/-) colon; and (9) the 5-HT3 receptor antagonist ondansetron, which reduced CMMCs and blocked their propagation in Tph1(+/+) mice, failed to alter CMMCs in Tph1(-/-) animals. Our observations suggest that mucosal 5-HT is essential for reflexes driven by mucosal stimulation and is also important for normal propagation of CMMCs and propulsion of pellets in the isolated colon.
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Affiliation(s)
- Dante J Heredia
- T. K. Smith: Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA.
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Goodman DM, Hall M, Levin A, Watson RS, Williams RG, Shah SS, Slonim AD. Adults with chronic health conditions originating in childhood: inpatient experience in children's hospitals. Pediatrics 2011; 128:5-13. [PMID: 21708805 PMCID: PMC3124106 DOI: 10.1542/peds.2010-2037] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE To describe the rate of increase of the population of adults seeking care as inpatients in children's hospitals over time. PATIENTS AND METHODS We analyzed data from January 1, 1999, to December 31, 2008, from patients hospitalized at 30 academic children's hospitals, including growth rates according to age group (pediatric: aged <18 years; transitional: aged 18-21 years; or adult: aged >21 years) and disease. RESULTS There were 3 343 194 hospital discharges for 2 143 696 patients. Transitional patients represented 2.0%, and adults represented 0.8%, totaling 59 974 patients older than 18 years. The number of unique patients, admissions, patient-days, and charges increased in all age groups over the study period and are projected to continue to increase. Resource use was disproportionately higher in the older ages. The growth of transitional patients exceeded that of others, with 6.9% average annual increase in discharges, 7.6% in patient-days, and 15% in charges. Chronic conditions occurred in 87% of adults compared with 48% of pediatric patients. Compared with pediatric patients, the rates of increase of inpatient-days increased significantly for transitional age patients with cystic fibrosis, malignant neoplasms, and epilepsy, and for adults with cerebral palsy. Annual growth rates of charges increased for transitional and adult patients for all diagnoses except cystic fibrosis and sickle cell disease. CONCLUSIONS The population of adults with diseases originating in childhood who are hospitalized at children's hospitals is increasing, with varying disease-specific changes over time. Our findings underscore the need for proactive identification of strategies to care for adult survivors of pediatric diseases.
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Affiliation(s)
- Denise M. Goodman
- Division of Critical Care, Northwestern University Feinberg School of Medicine and Children's Memorial Hospital, Chicago, Illinois
| | - Matthew Hall
- Child Health Corporation of America, Shawnee Mission, Kansas
| | - Amanda Levin
- Division of Critical Care, Northwestern University Feinberg School of Medicine and Children's Memorial Hospital, Chicago, Illinois
| | - R. Scott Watson
- Clinical Research, Investigation, and Systems Modeling of Acute Illness Laboratory, Departments of Critical Care Medicine and Pediatrics, University of Pittsburgh School of Medicine and Children's Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania
| | - Roberta G. Williams
- Department of Pediatrics, Children's Hospital Los Angeles and Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Samir S. Shah
- Division of Infectious Diseases, Children's Hospital of Philadelphia and Departments of Pediatrics and Epidemiology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania; and
| | - Anthony D. Slonim
- Internal Medicine and Pediatrics, Virginia Tech-Carilion School of Medicine, Roanoke, Virginia
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