Abstract
Purpose of Review
Small bowel dysmotility is a broad heterogeneous term that encompasses a wide range of gastrointestinal disorders resulting from abnormal gut motility. Chronic intestinal pseudo-obstruction (CIPO) is a severe, rare, and complex small bowel motility disorder at the extreme end of this spectrum. It is characterized by failure of the intestinal tract to propel contents, which results in signs and symptoms of bowel obstruction albeit in the absence of any obstructive lesion(s). In this article, we discuss up-to-date diagnostic techniques, management options, and histopathological findings in CIPO.
Recent Findings
We will emphasize the latest diagnostic methodologies and therapeutic options as well as enteric histopathologic abnormalities in patients with CIPO.
Summary
CIPO continues to be a clinical challenge. Several novel pharmacological agents hold promise including gastrointestinal hormone agonists and prokinetics. Furthermore, histopathologic findings may help guide therapy and provide further prognostic significance. At present, nutritional support, symptom management, and avoidance of long-term complications are the mainstay of treatment in CIPO.
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References
Papers of particular interest, published recently, have been highlighted as: •• Of major importance
Boeckxstaens G, Camilleri M, Sifrim D, Houghton LA, Elsenbruch S, Lindberg G, et al. Fundamentals of neurogastroenterology: physiology/motility - sensation. Gastroenterology. 2016;150:1292–1304.e2.
Goldstein A, Hofstra R, Burns A. Building a brain in the gut: development of the enteric nervous system. Clin Genet. 2013;83:307–16.
Takahashi T. Mechanism of interdigestive migrating motor complex. J Neurogastroenterol Motil. 2012;18:246–57.
Wood JD. Enteric nervous system: neuropathic gastrointestinal motility. Dig Dis Sci. 2016;61. United States:1803–16.
Dudley HA, Sinclair IS, Mc LI, et al. Intestinal pseudo-obstruction. J R Coll Surg Edinb. 1958;3:206–17.
Research Group for the Survey of the Actual Conditions of the Epidemiology, Diagnosis and Treatment of CIIP in Japan. Research Report, Fiscal Year. Research Project for Overcoming Intractable Diseases, Health Labour Sciences Research Grant, vol. 2009. Yokohama: San-ou Printing Ltd.; 2009. p. 3–6.
Iida H, Ohkubo H, Inamori M, et al. Epidemiology and clinical experience of chronic intestinal pseudo-obstruction in Japan: a nationwide epidemiologic survey. J Epidemiol. 2013;23:288–94.
•• Paine P, McLaughlin J, Lal S. Review article: the assessment and management of chronic severe gastrointestinal dysmotility in adults. Aliment Pharmacol Ther. 2013;38:1209–29. This article suggests a management algorithm for patients with severe GI dysmotility after reviewing 721 relevant articles.
•• De Giorgio R, Sarnelli G, Corinaldesi R, et al. Advances in our understanding of the pathology of chronic intestinal pseudo-obstruction. Gut. 2004;53:1549–52. A comprehensive review on enteric neuropathies of the enteric system with recommended immunosuppressive therapies.
•• Knowles CH, Giorgio RD, Kapur RP, et al. The London Classification of gastrointestinal neuromuscular pathology: report on behalf of the Gastro 2009 International Working Group. 2010;59(7):882–7. A structured classification system on histopathological phenotypes of gastrointestinal neuromuscular pathology as well as a a consensus report on technical aspects (i.e. safe tissue acquisition and processing).
Cogliandro RF, Antonucci A, De Giorgio R, et al. Patient-reported outcomes and gut dysmotility in functional gastrointestinal disorders. Neurogastroenterol Motil. 2011;23:1084–91.
Stanghellini V, Cogliandro RF, De Giorgio R, et al. Natural history of chronic idiopathic intestinal pseudo-obstruction in adults: a single center study. Clin Gastroenterol Hepatol. 2005;3:449–58.
Lindberg G, Iwarzon M, Tornblom H. Clinical features and long-term survival in chronic intestinal pseudo-obstruction and enteric dysmotility. Scand J Gastroenterol. 2009;44:692–9.
Antonucci A, Fronzoni L, Cogliandro L, et al. Chronic intestinal pseudo-obstruction. World J Gastroenterol. 2008;14:2953–61.
Rao SSC, Parkman H, McCallum R. Handbook of Gastrointestinal Motility and Functional Disorders. SLACK Incorporated: Thorofare; 2015.
De Giorgio R, Camilleri M. Human enteric neuropathies: morphology and molecular pathology. Neurogastroenterol Motil. 2004;16:515–31.
Lee H, Park S, Oh JT, et al. Oral pyridostigmine-responsive visceral myopathy with ACTG2 mutations: a case series. J Pediatr Gastroenterol Nutr. 2019;68:e16–7.
Joly F, Amiot A, Coffin B, et al. Chronic intestinal pseudo-obstruction. Gastroenterol Clin Biol. 2006;30:975–85.
Yamanaka Y, Sakakibara R, Asahina M, et al. Chronic intestinal pseudo-obstruction as the initial feature of pure autonomic failure. J Neurol Neurosurg Psychiatry. 2006;77. England:800.
Chronic intestinal pseudo-obstruction - UpToDate, 2019.
Man BL, Fu YP. Intestinal pseudo-obstruction as a presenting symptom of Guillain-Barre syndrome. BMJ Case Rep. 2014;2014.pii: bcr2014205155. https://doi.org/10.1136/bcr-2014-205155
Yarze JC, Lenihan MW, Soule TI, et al. Treatment of colon pseudo-obstruction in Guillain-Barre syndrome. Am J Gastroenterol. 2001;96:3470–1.
Sekino Y, Inamori M, Yamada E, et al. Characteristics of intestinal pseudo-obstruction in patients with mitochondrial diseases. World J Gastroenterol. 2012;18:4557–62.
Pelizzo G, Villanacci V, Salemme M, et al. Intestinal pseudo-obstruction due to small bowel alpha-actin deficiency in a child with Ehlers-Danlos syndrome. Tech Coloproctol. 2013;17:673–4.
McFarlane IM, Bhamra MS, Kreps A, et al. Gastrointestinal Manifestations of Systemic Sclerosis. Rheumatology (Sunnyvale). 2018;8(1):235
Blondon H, Polivka M, Joly F, et al. Digestive smooth muscle mitochondrial myopathy in patients with mitochondrial-neuro-gastro-intestinal encephalomyopathy (MNGIE). Gastroenterol Clin Biol. 2005;29:773–8.
Lindberg G, Törnblom H, Iwarzon M, et al. Full-thickness biopsy findings in chronic intestinal pseudo-obstruction and enteric dysmotility. 2009;58(8):1084–90
Knowles CH, Silk DB, Darzi A, et al. Deranged smooth muscle alpha-actin as a biomarker of intestinal pseudo-obstruction: a controlled multinational case series. Gut. 2004;53:1583–9.
De Giorgio R, Guerrini S, Barbara G, et al. Inflammatory neuropathies of the enteric nervous system. Gastroenterology. 2004;126:1872–83.
Gerl A, Storck M, Schalhorn A, et al. Paraneoplastic chronic intestinal pseudoobstruction as a rare complication of bronchial carcinoid. Gut. 1992;33:1000–3.
Sutton I, Winer J, Rowlands D, et al. Limbic encephalitis and antibodies to Ma2: a paraneoplastic presentation of breast cancer. J Neurol Neurosurg Psychiatry. 2000;69:266–8.
Lee HR, Lennon VA, Camilleri M, et al. Paraneoplastic gastrointestinal motor dysfunction: clinical and laboratory characteristics. Am J Gastroenterol. 2001;96:373–9.
Darnell RB, Posner JB. Paraneoplastic syndromes involving the nervous system. N Engl J Med. 2003;349:1543–54.
Smith VV, Gregson N, Foggensteiner L, et al. Acquired intestinal aganglionosis and circulating autoantibodies without neoplasia or other neural involvement. Gastroenterology. 1997;112:1366–71.
Pelosof LC, Gerber DE. Paraneoplastic syndromes: an approach to diagnosis and treatment. Mayo Clin Proc. 2010;85:838–54.
Schappi MG, Smith VV, Milla PJ, et al. Eosinophilic myenteric ganglionitis is associated with functional intestinal obstruction. Gut. 2003;52:752–5.
Hall KE, Wiley JW. Neural injury, repair and adaptation in the GI tract. I. New insights into neuronal injury: a cautionary tale. Am J Phys. 1998;274:G978–83.
De Giorgio R BE, Bianco F, Cogliandro, R VU, Caio G. Chronic intestinal pseudo-obstruction: A. Neuropathological approach. In: Sakamoto C, ed. Functional and GI motility disorders. Frontiers. of Gastrointestinal Research. 33, 2014:45–54.
Huang EJ, Reichardt LF. Neurotrophins: roles in neuronal development and function. Annu Rev Neurosci. 2001;24:677–736.
Coulie B, Szarka LA, Camilleri M, et al. Recombinant human neurotrophic factors accelerate colonic transit and relieve constipation in humans. Gastroenterology. 2000;119:41–50.
De Giorgio R, Barbara G, Stanghellini V, et al. Reduced Bcl-2 expression in the enteric nervous system (ENS) as a marker for neural degeneration in patients with gastrointestinal motor disorders (GIMD). Gastroenterology. 2000;118:A867.
Smith VV, Lake BD, Kamm MA, et al. Intestinal pseudo-obstruction with deficient smooth muscle alpha-actin. Histopathology. 1992;21:535–42.
Bashashati M, McCallum RW. Is Interstitial Cells of Cajal–opathy Present in Gastroparesis? J Neurogastroenterol Motil. 2015;21:486–93.
Isozaki K, Hirota S, Miyagawa J, et al. Deficiency of c-kit+ cells in patients with a myopathic form of chronic idiopathic intestinal pseudo-obstruction. Am J Gastroenterol. 1997;92:332–4.
Boeckxstaens GE, Rumessen JJ, de Wit L, et al. Abnormal distribution of the interstitial cells of cajal in an adult patient with pseudo-obstruction and megaduodenum. Am J Gastroenterol. 2002;97:2120–6.
•• Keller J, Bassotti G, Clarke J, et al. Expert consensus document: advances in the diagnosis and classification of gastric and intestinal motility disorders. Nat Rev Gastroenterol Hepatol. 2018;15:291–308. Current and comprehensive expert consensus review on the advances in the diagnosis and classification of gastrointestinal motility disorders.
Di Nardo G, Karunaratne TB, Frediani S, et al. Chronic intestinal pseudo-obstruction: Progress in management? Neurogastroenterol Motil. 2017;29(12). https://doi.org/10.1111/nmo.13231
Malagelada C, Karunaratne TB, Accarino A, et al. Comparison between small bowel manometric patterns and full-thickness biopsy histopathology in severe intestinal dysmotility. Neurogastroenterol Motil. 2018;30.
Stanghellini V, Camilleri M, Malagelada JR. Chronic idiopathic intestinal pseudo-obstruction: clinical and intestinal manometric findings. Gut. 1987;28:5–12.
Bassotti G, Bologna S, Ottaviani L, et al. Intestinal manometry: who needs it? Gastroenterol Hepatol Bed Bench. 2015;8:246–52.
Lindberg G, Tornblom H, Iwarzon M, et al. Full-thickness biopsy findings in chronic intestinal pseudo-obstruction and enteric dysmotility. Gut. 2009;58:1084–90.
Patcharatrakul T, Gonlachanvit S. Technique of functional and motility test: how to perform antroduodenal manometry. J Neurogastroenterol Motil. 2013;19:395–404.
Comparison between small bowel manometric patterns and full-thickness biopsy histopathology in severe intestinal dysmotility - Malagelada - 2018 - Neurogastroenterology & Motility - Wiley Online Library. 2019.
Kahrilas PJ, Bredenoord AJ, Fox M, et al. The Chicago Classification of esophageal motility disorders, v3.0. Neurogastroenterol Motil. 2015;27:160–74.
Malagelada C, Malagelada JR. Small bowel motility. Curr Gastroenterol Rep. 2017;19:26.
Lindberg G. High-resolution manometry changes our views of gastrointestinal motility. Neurogastroenterol Motil. 2013;25:780–2.
Farmer AD, Scott SM, Hobson AR. Gastrointestinal motility revisited: the wireless motility capsule. United European Gastroenterol J. 2013;1:413–21.
Adler SN, Metzger YC. PillCam COLON capsule endoscopy: recent advances and new insights. Ther Adv Gastroenterol. 2011;4:265–8.
Odille F, Menys A, Ahmed A, et al. Quantitative assessment of small bowel motility by nonrigid registration of dynamic MR images. Magn Reson Med. 2012;68:783–93.
Menys A, Butt S, Emmanuel A, et al. Comparative quantitative assessment of global small bowel motility using magnetic resonance imaging in chronic intestinal pseudo-obstruction and healthy controls. Neurogastroenterol Motil. 2016;28:376–83.
Fuyuki A, Ohkubo H, Higurashi T, et al. Clinical importance of cine-MRI assessment of small bowel motility in patients with chronic intestinal pseudo-obstruction: a retrospective study of 33 patients. J Gastroenterol. 2017;52:577–84.
Ohkubo H, Kessoku T, Fuyuki A, et al. Assessment of small bowel motility in patients with chronic intestinal pseudo-obstruction using cine-MRI. Am J Gastroenterol. 2013;108:1130–9.
Iwarzon M, Gardulf A, Lindberg G. Health care use in patients with chronic intestinal dysmotility before and after introducing a specialized day-care unit. Clin Gastroenterol Hepatol. 2008;6:893–8.
Silk DB. Chronic idiopathic intestinal pseudo-obstruction: the need for a multidisciplinary approach to management. Proc Nutr Soc. 2004;63. England:473–80.
Tomomasa T, Kuroume T, Arai H, et al. Erythromycin induces migrating motor complex in human gastrointestinal tract. Dig Dis Sci. 1986;31:157–61.
Emmanuel AV, Shand AG, Kamm MA. Erythromycin for the treatment of chronic intestinal pseudo-obstruction: description of six cases with a positive response. Aliment Pharmacol Ther. 2004;19:687–94.
Abrahamsson H. Treatment options for patients with severe gastroparesis. Gut. 2007;56:877–83.
NCATS Inxight: Drugs — CAMICINAL, 2019.
Deloose E, Depoortere I, de Hoon J, et al. Manometric evaluation of the motilin receptor agonist camicinal (GSK962040) in humans. Neurogastroenterol Motil. 2018;30(1). https://doi.org/10.1111/nmo.13173
Hobson R, Farmer AD, Dewit OE, et al. The effects of camicinal, a novel motilin agonist, on gastro-esophageal function in healthy humans-a randomized placebo controlled trial. Neurogastroenterol Motil. 2015;27:1629–37.
Chapman MJ, Deane AM, O’Connor SL, et al. The effect of camicinal (GSK962040), a motilin agonist, on gastric emptying and glucose absorption in feed-intolerant critically ill patients: a randomized, blinded, placebo-controlled, clinical trial. Crit Care. 2016;20:232.
Müller T, Nogueiras R, Andermann M, et al. Ghrelin. Mol Metab. 2015;4:437–60.
Mosinska P, Zatorski H, Storr M, et al. Future treatment of constipation-associated fisorders: role of relamorelin and other ghrelin receptor agonists. J Neurogastroenterol Motil. 2017;23:171–9.
Zatorski H, Mosinska P, Storr M, et al. Relamorelin and other ghrelin receptor agonists - future options for gastroparesis, functional dyspepsia and proton pump inhibitors-resistant non-erosive reflux disease. J Physiol Pharmacol. 2017;68:797–805.
A safety and efficacy study of relamorelin in diabetic gastroparesis 01 - Full Text View - ClinicalTrials.gov. 2019.
Van der Ploeg L, Laken H, Sharma S, et al. Preclinical gastrointestinal prokinetic efficacy and endocrine effects of the ghrelin mimetic RM-131. Life Sci. 2014;109:20–9.
Sajid MS, Hebbar M, Baig MK, et al. Use of prucalopride for chronic constipation: a systematic review and meta-analysis of published randomized, controlled trials. J Neurogastroenterol Motil. 2016;22. Korea (South):412–22.
Emmanuel AV, Kamm MA, Roy AJ, et al. Randomized clinical trial: the efficacy of prucalopride in patients with chronic intestinal pseudo-obstruction--a double-blind, placebo-controlled, cross-over, multiple n = 1 study. Aliment Pharmacol Ther. 2012;35:48–55.
Camilleri M, Malagelada JR, Abell TL, et al. Effect of six weeks of treatment with cisapride in gastroparesis and intestinal pseudoobstruction. Gastroenterology. 1989;96:704–12.
Abell TL, Camilleri M, DiMagno EP, et al. Long-term efficacy of oral cisapride in symptomatic upper gut dysmotility. Dig Dis Sci. 1991;36:616–20.
Reddymasu SC, McCallum RW. Pharmacotherapy of gastroparesis. Expert Opin Pharmacother. 2009;10:469–84.
Reddymasu SC, Soykan I, McCallum RW. Domperidone: review of pharmacology and clinical applications in gastroenterology. Am J Gastroenterol. 2007;102:2036–45.
Buffery PJ, Strother RM. Domperidone safety: a mini-review of the science of QT prolongation and clinical implications of recent global regulatory recommendations. N Z Med J. 2015;128:66–74.
Soudah HC, Hasler WL, Owyang C. Effect of octreotide on intestinal motility and bacterial overgrowth in scleroderma. N Engl J Med. 1991;325:1461–7.
Verne GN, Eaker EY, Hardy E, et al. Effect of octreotide and erythromycin on idiopathic and scleroderma-associated intestinal pseudoobstruction. Dig Dis Sci. 1995;40:1892–901.
Edmunds MC, Chen JD, Soykan I, et al. Effect of octreotide on gastric and small bowel motility in patients with gastroparesis. Aliment Pharmacol Ther. 1998;12:167–74.
Fan JMG, Diaz J, Paez V, McCallum R. Pneumatosis cystoides intestinalis scleroderma: a case series. El Paso Physician. 2017;40: El Paso County Medical Society:6–9.
Mitsuyoshi Y, Takakura K, Kobayashi T, et al. Chronic intestinal pseudo-obstruction with pneumatosis cystoides intestinalis in a patient with systemic sclerosis: a case report. Medicine (Baltimore). 2019;98:e15480.
Bures J, Cyrany J, Kohoutova D, et al. Small intestinal bacterial overgrowth syndrome. World J Gastroenterol. 2010;16:2978–90.
Rosson RS, Yesner R. Peroral duodenal biopsy in progressive systemic sclerosis. N Engl J Med. 1965;272:391–4.
Law NM, Bharucha AE, Undale AS, et al. Cholinergic stimulation enhances colonic motor activity, transit, and sensation in humans. Am J Physiol Gastrointest Liver Physiol. 2001;281:G1228–37.
Parthasarathy G, Ravi K, Camilleri M, et al. Effect of neostigmine on gastroduodenal motility in patients with suspected gastrointestinal motility disorders. Neurogastroenterol Motil. 2015;27:1736–46.
Calvet X, Martinez JM, Martinez M. Repeated neostigmine dosage as palliative treatment for chronic colonic pseudo-obstruction in a patient with autonomic paraneoplastic neuropathy. Am J Gastroenterol. 2003;98. United States:708–9.
Lee BH, Kim N, Kang SB, et al. Two Cases of Chronic Idiopathic Intestinal Pseudo-obstruction with Different Clinical Features. J Neurogastroenterol Motil. 2010;16:83–9.
O’Dea CJ, Brookes JH, Wattchow DA. The efficacy of treatment of patients with severe constipation or recurrent pseudo-obstruction with pyridostigmine. Color Dis. 2010;12:540–8.
Small intestinal bacterial overgrowth: management - UpToDate, 2019.
Dukowicz AC, Lacy BE, Levine GM. Small intestinal bacterial overgrowth: a comprehensive review. Gastroenterol Hepatol (N Y). 2007;3:112–22.
Uchida K, Otake K, Inoue M, et al. Chronic intestinal pseudo-obstruction due to lymphocytic intestinal leiomyositis: case report and literature review. Intractable Rare Dis Res. 2012;1:35–9.
Badari A, Farolino D, Nasser E, et al. A novel approach to paraneoplastic intestinal pseudo-obstruction. Support Care Cancer. 2012;20:425–8.
Ohkubo H, Fuyuki A, Arimoto J, et al. Efficacy of percutaneous endoscopic gastro-jejunostomy (PEG-J) decompression therapy for patients with chronic intestinal pseudo-obstruction (CIPO). Neurogastroenterol Motil. 2017;29(12). https://doi.org/10.1111/nmo.13127
Pironi L, Arends J, Baxter J, et al. ESPEN endorsed recommendations. Definition and classification of intestinal failure in adults. Clin Nutr. 2015;34:171–80.
De Giorgio R, Cogliandro RF, Barbara G, et al. Chronic intestinal pseudo-obstruction: clinical features, diagnosis, and therapy. Gastroenterol Clin N Am. 2011;40:787–807.
Scolapio JS, Ukleja A, Bouras EP, et al. Nutritional management of chronic intestinal pseudo-obstruction. J Clin Gastroenterol. 1999;28:306–12.
Billiauws L, Corcos O, Joly F. Dysmotility disorders: a nutritional approach. Curr Opin Clin Nutr Metab Care. 2014;17:483–8.
Sabbagh C, Amiot A, Maggiori L, et al. Non-transplantation surgical approach for chronic intestinal pseudo-obstruction: analysis of 63 adult consecutive cases. Neurogastroenterol Motil. 2013;25:e680–6.
De Giorgio R, Ricciardiello L, Naponelli V, et al. Chronic intestinal pseudo-obstruction related to viral infections. Transplant Proc. 2010;42:9–14.
Munoz MT, Solis Herruzo JA. Chronic intestinal pseudo-obstruction. Rev Esp Enferm Dig. 2007;99:100–11.
Cogliandro RF, De Giorgio R, Barbara G, et al. Chronic intestinal pseudo-obstruction. Best Pract Res Clin Gastroenterol. 2007;21:657–69.
Janssen P, Verschueren S, Ly HG, et al. Intragastric pressure during food intake: a physiological and minimally invasive method to assess gastric accommodation. Neurogastroenterol Motil. 2011;23:316–22 e153–4.
Rao SS, Camilleri M, Hasler WL, et al. Evaluation of gastrointestinal transit in clinical practice: position paper of the American and European Neurogastroenterology and Motility Societies. Neurogastroenterol Motil. 2011;23:8–23.
Rezaie A, Buresi M, Lembo A, et al. Hydrogen and methane-based breath testing in gastrointestinal disorders: the North American consensus. Am J Gastroenterol. 2017;112:775–84.
Barros LL, Farias AQ, Rezaie A. Gastrointestinal motility and absorptive disorders in patients with inflammatory bowel diseases: prevalence, diagnosis and treatment. World J Gastroenterol. 2019;25:4414–26.
Andrews CN, Storr M. The pathophysiology of chronic constipation. Can J Gastroenterol. 2011;25(Suppl B):16b–21b.
Knowles CH, De Giorgio R, Kapur RP, et al. The London classification of gastrointestinal neuromuscular pathology: report on behalf of the Gastro 2009 International Working Group. Gut. 2010;59:882–7.
Camilleri M, Parkman HP, Shafi MA, et al. Clinical guideline: management of gastroparesis. Am J Gastroenterol. 2013;108:18–37 quiz 38.
Emmanuel AV, Kamm MA, Roy AJ, Kerstens R, Vandeplassche L. Randomised clinical trial: the efficacy of prucalopride in patients with chronic intestinal pseudo-obstruction--a double-blind, placebo-controlled, cross-over, multiple n = 1 study. Aliment Pharmacol Ther. 2012;35:48–55.
Lipton AB, Knauer CM. Pseudo-obstruction of the bowel. Therapeutic trial of metoclopramide. Am J Dig Dis. 1977;22:263–5.
Sorhaug S, Steinshamn SL, Waldum HL. Octreotide treatment for paraneoplastic intestinal pseudo-obstruction complicating SCLC. Lung Cancer. 2005;48:137–40.
O'Dea CJ, Brookes JH, Wattchow DA. The efficacy of treatment of patients with severe constipation or recurrent pseudo-obstruction with pyridostigmine. Color Dis. 2010;12:540–8.
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Gonzalez, Z., McCallum, R. Small Bowel Dysmotility, Pseudoobstruction, and Functional Correlation with Histopathology: Lessons Learned. Curr Gastroenterol Rep 22, 14 (2020). https://doi.org/10.1007/s11894-020-0748-8
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DOI: https://doi.org/10.1007/s11894-020-0748-8