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Tan AH, Chuah KH, Beh YY, Schee JP, Mahadeva S, Lim SY. Gastrointestinal Dysfunction in Parkinson's Disease: Neuro-Gastroenterology Perspectives on a Multifaceted Problem. J Mov Disord 2023; 16:138-151. [PMID: 37258277 DOI: 10.14802/jmd.22220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 02/21/2023] [Indexed: 06/02/2023] Open
Abstract
Patients with Parkinson's disease (PD) face a multitude of gastrointestinal (GI) symptoms, including nausea, bloating, reduced bowel movements, and difficulties with defecation. These symptoms are common and may accumulate during the course of PD but are often under-recognized and challenging to manage. Objective testing can be burdensome to patients and does not correlate well with symptoms. Effective treatment options are limited. Evidence is often based on studies in the general population, and specific evidence in PD is scarce. Upper GI dysfunction may also interfere with the pharmacological treatment of PD motor symptoms, which poses significant management challenges. Several new less invasive assessment tools and novel treatment options have emerged in recent years. The current review provides an overview and a practical approach to recognizing and diagnosing common upper and lower GI problems in PD, e.g., dyspepsia, gastroparesis, small bowel dysfunction, chronic constipation, and defecatory dysfunction. Management aspects are discussed based on the latest evidence from the PD and general populations, with insights for future research pertaining to GI dysfunction in PD.
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Affiliation(s)
- Ai Huey Tan
- Division of Neurology, Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
- Mah Pooi Soo & Tan Chin Nam Centre for Parkinson's & Related Disorders, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Kee Huat Chuah
- Division of Gastroenterology, Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Yuan Ye Beh
- Department of Medicine, Hospital Pulau Pinang, Penang, Malaysia
| | - Jie Ping Schee
- Division of Neurology, Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
- Mah Pooi Soo & Tan Chin Nam Centre for Parkinson's & Related Disorders, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Sanjiv Mahadeva
- Division of Gastroenterology, Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Shen-Yang Lim
- Division of Neurology, Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
- Mah Pooi Soo & Tan Chin Nam Centre for Parkinson's & Related Disorders, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
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Soliman H, Coffin B, Gourcerol G. Gastroparesis in Parkinson Disease: Pathophysiology, and Clinical Management. Brain Sci 2021; 11:831. [PMID: 34201699 PMCID: PMC8301889 DOI: 10.3390/brainsci11070831] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/16/2021] [Accepted: 06/22/2021] [Indexed: 02/07/2023] Open
Abstract
Patients with Parkinson disease (PD) experience a range of non-motor symptoms, including gastrointestinal symptoms. These symptoms can be present in the prodromal phase of the disease. Recent advances in pathophysiology reveal that α-synuclein aggregates that form Lewy bodies and neurites, the hallmark of PD, are present in the enteric nervous system and may precede motor symptoms. Gastroparesis is one of the gastrointestinal involvements of PD and is characterized by delayed gastric emptying of solid food in the absence of mechanical obstruction. Gastroparesis has been reported in nearly 45% of PD. The cardinal symptoms include early satiety, postprandial fullness, nausea, and vomiting. The diagnosis requires an appropriate test to confirm delayed gastric emptying, such as gastric scintigraphy, or breath test. Gastroparesis can lead to malnutrition and impairment of quality of life. Moreover, it might interfere with the absorption of antiparkinsonian drugs. The treatment includes dietary modifications, and pharmacologic agents both to accelerate gastric emptying and relieve symptoms. Alternative treatments have been recently developed in the management of gastroparesis, and their use in patients with PD will be reported in this review.
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Affiliation(s)
- Heithem Soliman
- Centre de Recherche sur l’Inflammation, Université de Paris, Inserm UMRS 1149, 75018 Paris, France;
- Département d’Hépato Gastro Entérologie, Hôpital Louis Mourier, DMU ESPRIT—GHU (AP-HP), 92700 Colombes, France
| | - Benoit Coffin
- Centre de Recherche sur l’Inflammation, Université de Paris, Inserm UMRS 1149, 75018 Paris, France;
- Département d’Hépato Gastro Entérologie, Hôpital Louis Mourier, DMU ESPRIT—GHU (AP-HP), 92700 Colombes, France
| | - Guillaume Gourcerol
- Centre Hospitalo-Universitaire de Rouen, INSERM UMR 1073, CIC-CRB 1404, 76000 Rouen, France;
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Gastrointestinal dysfunction in the synucleinopathies. Clin Auton Res 2020; 31:77-99. [PMID: 33247399 DOI: 10.1007/s10286-020-00745-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 11/04/2020] [Indexed: 12/15/2022]
Abstract
Interest in gastrointestinal dysfunction in Parkinson's disease has blossomed over the past 30 years and has generated a wealth of investigation into this non-motor aspect of the disorder, research that has encompassed its pathophysiology, its clinical features, and its impact on quality of life. The question of gastrointestinal dysfunction in the other synucleinopathies has not received nearly as much attention, but information and knowledge are growing. In this review, the current knowledge, controversies, and gaps in our understanding of the pathophysiology of gastrointestinal dysfunction in Parkinson's disease and the other synucleinopathies will be addressed, and extended focus will be directed toward the clinical problems involving saliva management, swallowing, gastric emptying, small intestinal function, and bowel function that are so problematic in these disorders.
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Chen Z, Li G, Liu J. Autonomic dysfunction in Parkinson's disease: Implications for pathophysiology, diagnosis, and treatment. Neurobiol Dis 2019; 134:104700. [PMID: 31809788 DOI: 10.1016/j.nbd.2019.104700] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 11/13/2019] [Accepted: 12/02/2019] [Indexed: 12/17/2022] Open
Abstract
Parkinson's disease (PD) is a neurodegenerative disease with a 200 year-long research history. Our understanding about its clinical phenotype and pathogenesis remains limited, although dopaminergic replacement therapy has significantly improved patient outcomes. Autonomic dysfunction is an essential category of non-motor phenotypes that has recently become a cutting edge field that directs frontier research in PD. In this review, we initially describe the epidemiology of dysautonomic symptoms in PD. Then, we perform a meticulous analysis of the pathophysiology of autonomic dysfunction in PD and propose that the peripheral autonomic nervous system may be a key route for α-synuclein pathology propagation from the periphery to the central nervous system. In addition, we recommend that constipation, orthostatic hypotension, urinary dysfunction, erectile dysfunction, and pure autonomic failure should be viewed as prodromal dysautonomic markers in PD prediction and diagnosis. Finally, we summarize the strategies currently available for the treatment of autonomic dysfunction in PD and suggest that high-quality, better-designed, randomized clinical trials should be conducted in the future.
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Affiliation(s)
- Zhichun Chen
- Department of Neurology, Institute of Neurology, Ruijin Hospital affiliated with the Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guanglu Li
- Department of Neurology, Institute of Neurology, Ruijin Hospital affiliated with the Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jun Liu
- Department of Neurology, Institute of Neurology, Ruijin Hospital affiliated with the Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Rahman Y, Afrin S, Alhaji Isa M, Ahmed S, Tabish M. Elucidating the molecular interaction of serum albumin with nizatidine and the role of β-cyclodextrin: multi-spectroscopic and computational approach. J Biomol Struct Dyn 2019; 38:1375-1387. [DOI: 10.1080/07391102.2019.1604265] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Yusra Rahman
- Department of Biochemistry, Faculty of Life Sciences, A. M. University, Aligarh, Uttar Pradesh, India
| | - Shumaila Afrin
- Department of Biochemistry, Faculty of Life Sciences, A. M. University, Aligarh, Uttar Pradesh, India
| | - Mustafa Alhaji Isa
- Department of Microbiology, Faculty of Sciences, University of Maiduguri, Maiduguri, Nigeria
| | - Shahbaz Ahmed
- Department of Biochemistry, Faculty of Life Sciences, A. M. University, Aligarh, Uttar Pradesh, India
| | - Mohammad Tabish
- Department of Biochemistry, Faculty of Life Sciences, A. M. University, Aligarh, Uttar Pradesh, India
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Receptor Ligands as Helping Hands to L-DOPA in the Treatment of Parkinson's Disease. Biomolecules 2019; 9:biom9040142. [PMID: 30970612 PMCID: PMC6523988 DOI: 10.3390/biom9040142] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 04/05/2019] [Accepted: 04/06/2019] [Indexed: 12/12/2022] Open
Abstract
Levodopa (LD) is the most effective drug in the treatment of Parkinson’s disease (PD). However, although it represents the “gold standard” of PD therapy, LD can cause side effects, including gastrointestinal and cardiovascular symptoms as well as transient elevated liver enzyme levels. Moreover, LD therapy leads to LD-induced dyskinesia (LID), a disabling motor complication that represents a major challenge for the clinical neurologist. Due to the many limitations associated with LD therapeutic use, other dopaminergic and non-dopaminergic drugs are being developed to optimize the treatment response. This review focuses on recent investigations about non-dopaminergic central nervous system (CNS) receptor ligands that have been identified to have therapeutic potential for the treatment of motor and non-motor symptoms of PD. In a different way, such agents may contribute to extending LD response and/or ameliorate LD-induced side effects.
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Parkinson's Disease and Current Treatments for Its Gastrointestinal Neurogastromotility Effects. ACTA ACUST UNITED AC 2018; 16:489-510. [PMID: 30361854 DOI: 10.1007/s11938-018-0201-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
PURPOSE OF REVIEW Gastrointestinal disturbances are seen in nearly all patients with Parkinson's disease and lead to impaired quality of life, affect drug pharmacodynamics, and potentially worsen patient's existing motor fluctuations, leading to further disability. Recent evidence links abnormal accumulations of α-synuclein aggregates in the periphery (gut) as seen in the cortex which causes dysfunctions impacting every level of the gastrointestinal tract from the esophagus, to the stomach, small bowel, colon, and rectum and can even predate the onset of the central neurologic disorder itself. Many treatments exist for the clinical phenotypes that result from the autonomic dysfunction and neuropathy involved in this neurodegenerative disorder. The treatments for the gut dysfunction seen in Parkinson's disease (PD) depend on the specific area of the gastrointestinal tract affected. For dysphagia, behavioral therapies with speech pathology, neuromuscular electrical stimulation, or botulinum toxin injection may be helpful. For gastroparesis, domperidone may serve as an antiemetic while also blunting the hypotensive potential of Levodopa while new treatments such as ghrelin agonists may prove beneficial to help appetite, satiety, gastric emptying in those with constipation, and even improve constipation. Antibiotics such as rifaximin with poor systemic absorption may be used to treat small bacterial overgrowth also found in those with PD while the benefits of probiotics is yet to be determined. Finally, constipation in PD can be a reflection of pelvic floor dyssynergia, slow transit constipation, or both, thus treatments targeting the specific anorectal dysfunction is necessary for better outcomes.
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Abstract
PURPOSE OF REVIEW During the past 25 years, there has been an explosion of information regarding the occurrence of gastrointestinal dysfunction in Parkinson's disease. In this review, the clinical features of gastrointestinal dysfunction in Parkinson's disease will be described and information regarding the potential role of the enteric nervous system and the gut microbiome in the genesis of Parkinson's disease will be addressed. RECENT FINDINGS Recognition is growing regarding the role that gastroparesis and small intestinal dysfunction may play in Parkinson's disease, especially with regard to erratic responses to anti-Parkinson medication. The presence of enteric nervous system involvement in Parkinson's disease is now well established, but whether the enteric nervous system is the starting point for Parkinson's disease pathology remains a source of debate. The potential role of the gut microbiome also is beginning to emerge. Gastrointestinal dysfunction is a prominent nonmotor feature of Parkinson's disease and dysfunction can be found along the entire length of the gastrointestinal tract. The enteric nervous system is clearly involved in Parkinson's disease. Whether it is the initial source of pathology is still a source of controversy. There also is growing recognition of the role that the gut microbiome may play in Parkinson's disease, but much more research is needed to fully assess this aspect of the disorder.
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Affiliation(s)
- Ronald F Pfeiffer
- Department of Neurology, Oregon Health and Science University, Portland, OR, USA.
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Chen Z, Chen S, Liu J. The role of T cells in the pathogenesis of Parkinson's disease. Prog Neurobiol 2018; 169:1-23. [PMID: 30114440 DOI: 10.1016/j.pneurobio.2018.08.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 06/24/2018] [Accepted: 08/12/2018] [Indexed: 02/06/2023]
Abstract
Recent evidence has shown that neuroinflammation plays a key role in the pathogenesis of Parkinson's disease (PD). However, different components of the brain's immune system may exert diverse effects on neuroinflammatory events in PD. The adaptive immune response, especially the T cell response, can trigger type 1 pro-inflammatory activities and suppress type 2 anti-inflammatory activities, eventually resulting in deregulated neuroinflammation and subsequent dopaminergic neurodegeneration. Additionally, studies have increasingly shown that therapies targeting T cells can alleviate neurodegeneration and motor behavior impairment in animal models of PD. Therefore, we conclude that abnormal T cell-mediated immunity is a fundamental pathological process that may be a promising translational therapeutic target for Parkinson's disease.
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Affiliation(s)
- Zhichun Chen
- Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated with the Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Shengdi Chen
- Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated with the Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Jun Liu
- Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated with the Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
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Mukherjee A, Biswas A, Das SK. Gut dysfunction in Parkinson's disease. World J Gastroenterol 2016; 22:5742-5752. [PMID: 27433087 PMCID: PMC4932209 DOI: 10.3748/wjg.v22.i25.5742] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2016] [Revised: 05/30/2016] [Accepted: 06/15/2016] [Indexed: 02/06/2023] Open
Abstract
Early involvement of gut is observed in Parkinson’s disease (PD) and symptoms such as constipation may precede motor symptoms. α-Synuclein pathology is extensively evident in the gut and appears to follow a rostrocaudal gradient. The gut may act as the starting point of PD pathology with spread toward the central nervous system. This spread of the synuclein pathology raises the possibility of prion-like propagation in PD pathogenesis. Recently, the role of gut microbiota in PD pathogenesis has received attention and some phenotypic correlation has also been shown. The extensive involvement of the gut in PD even in its early stages has led to the evaluation of enteric α-synuclein as a possible biomarker of early PD. The clinical manifestations of gastrointestinal dysfunction in PD include malnutrition, oral and dental disorders, sialorrhea, dysphagia, gastroparesis, constipation, and defecatory dysfunction. These conditions are quite distressing for the patients and require relevant investigations and adequate management. Treatment usually involves both pharmacological and non-pharmacological measures. One important aspect of gut dysfunction is its contribution to the clinical fluctuations in PD. Dysphagia and gastroparesis lead to inadequate absorption of oral anti-PD medications. These lead to response fluctuations, particularly delayed-on and no-on, and there is significant relationship between levodopa pharmacokinetics and gastric emptying in patients with PD. Therefore, in such cases, alternative routes of administration or drug delivery systems may be required.
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Zhao X, Mashimo H. Current and Emerging Medical Therapies for Gastroparesis. CURRENT TREATMENT OPTIONS IN GASTROENTEROLOGY 2015; 13:452-72. [PMID: 26507073 DOI: 10.1007/s11938-015-0071-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OPINION STATEMENT Gastroparesis likely involves various pathophysiological disorders and is increasingly prevalent as complications of surgeries, medications, and chronic diabetes. Key to diagnosis is evidence of delayed gastric emptying, generally based on standardized scintigraphy, and ruling out distal obstruction or other dysmotilities. Initial medical management includes reviewing potentially exacerbating medications and ruling out other reversible causes, achieving tighter glucose control in diabetics, and implementing dietary and lifestyle changes. While current available medications are limited, symptomatic control is aimed at improving gastric emptying, alleviating nausea and vomiting, and treating associated abdominal pain. Other potential therapies are aimed at reducing acid production, improving gastric accommodation or pyloric dysfunction, and treating bacterial overgrowth. Future studies should be aimed toward identification of subpopulations of gastroparetics who are better responders to the various medications based on differences in underlying pathophysiology and adopting standardized study end point measures that may allow for comparisons across trials. This chapter will review current treatment options, upcoming promising medications, and some of the hurdles in advancing the field forward.
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Affiliation(s)
- Xiaofeng Zhao
- Center for Swallowing and Motility Disorders, VA Boston Healthcare/Harvard Medical School, 1400 VFW Pkwy, West Roxbury, MA, 02132, USA
| | - Hiroshi Mashimo
- Center for Swallowing and Motility Disorders, VA Boston Healthcare/Harvard Medical School, 1400 VFW Pkwy, West Roxbury, MA, 02132, USA.
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Shiina S, Sakakibara R, Doi H, Tateno F, Sato M, Masaka T, Kishi M, Tsuyusaki Y, Ogata T, Aiba Y, Tateno H. Levodopa Does Not Worsen Gastric Emptying in Parkinson's Disease. J Am Geriatr Soc 2015; 63:2185-6. [DOI: 10.1111/jgs.13675] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shunsuke Shiina
- Pharmaceutical Unit; Department of Internal Medicine; Sakura Medical Center; Toho University; Sakura Japan
| | - Ryuji Sakakibara
- Division of Neurology; Department of Internal Medicine; Sakura Medical Center; Toho University; Sakura Japan
| | - Hirokazu Doi
- Pharmaceutical Unit; Department of Internal Medicine; Sakura Medical Center; Toho University; Sakura Japan
| | - Fuyuki Tateno
- Division of Neurology; Department of Internal Medicine; Sakura Medical Center; Toho University; Sakura Japan
| | - Mitsutoshi Sato
- Department of Chemical Pharmacology; School of Pharmaceutical Sciences; Toho University; Narashino Japan
| | - Tohru Masaka
- Pharmaceutical Unit; Department of Internal Medicine; Sakura Medical Center; Toho University; Sakura Japan
| | - Masahiko Kishi
- Division of Neurology; Department of Internal Medicine; Sakura Medical Center; Toho University; Sakura Japan
| | - Yohei Tsuyusaki
- Division of Neurology; Department of Internal Medicine; Sakura Medical Center; Toho University; Sakura Japan
| | - Tsuyoshi Ogata
- Division of Neurology; Department of Internal Medicine; Sakura Medical Center; Toho University; Sakura Japan
| | - Yosuke Aiba
- Division of Neurology; Department of Internal Medicine; Sakura Medical Center; Toho University; Sakura Japan
| | - Hiromi Tateno
- Division of Neurology; Department of Internal Medicine; Sakura Medical Center; Toho University; Sakura Japan
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Barboza JL, Okun MS, Moshiree B. The treatment of gastroparesis, constipation and small intestinal bacterial overgrowth syndrome in patients with Parkinson's disease. Expert Opin Pharmacother 2015; 16:2449-64. [PMID: 26374094 DOI: 10.1517/14656566.2015.1086747] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Parkinson's disease (PD) affects the nerves of the entire gastrointestinal (GI) tract and may result in profound gastrointestinal (GI) dysfunction leading to poor patient outcomes. Common GI disturbances in patients with PD include gastroparesis (GP), constipation and small intestinal bacterial overgrowth syndrome (SIBO). In particular, GP is difficult to treat due to the limited options available and precautions, contraindications and adverse effects associated with the approved treatments. Moreover, some commonly used medications can worsen pre-existing PD. AREAS COVERED Our review will focus on treatment options for GP and SIBO with motilin agonists, dopamine receptor antagonists, Ghrelin agonists muscarinic agonists, 5-HT4 receptor agonists, antibiotics, probiotics and herbal formulation such as iberogast. Constipation occurs in the majority of patients with PD and fortunately many treatments are now available. Our review is based on original papers or reviews selected from PUBMED search and Cochrane reviews. EXPERT OPINION Motility disorders of the GI tract are found frequently in patients with PD and treating the underlying GI disorders caused by PD with various prokinetics and laxatives is paramount in achieving improvements in patient's motor function. Various prokinetics and laxatives are now available to provide some relief of the GI morbidity caused by PD leading even to better absorption of even the PD treatments.
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Affiliation(s)
| | - Michael S Okun
- b 2 University of Florida, Center for Movement Disorders and Neurorestoration , Gainesville, FL, UK
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Klingelhoefer L, Reichmann H. Parkinson’s Disease and Gastrointestinal Non Motor Symptoms: Diagnostic and Therapeutic Options – A Practise Guide. JOURNAL OF PARKINSONS DISEASE 2015; 5:647-58. [DOI: 10.3233/jpd-150574] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Fasano A, Visanji NP, Liu LWC, Lang AE, Pfeiffer RF. Gastrointestinal dysfunction in Parkinson's disease. Lancet Neurol 2015; 14:625-39. [DOI: 10.1016/s1474-4422(15)00007-1] [Citation(s) in RCA: 371] [Impact Index Per Article: 41.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 03/09/2015] [Accepted: 03/16/2015] [Indexed: 12/11/2022]
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Sakakibara R, Doi H, Sato M, Hirai S, Masaka T, Kishi M, Tsuyusaki Y, Tateno A, Tateno F, Aiba Y, Ogata T, Suzuki Y. Nizatidine ameliorates slow transit constipation in Parkinson's disease. J Am Geriatr Soc 2015; 63:399-401. [PMID: 25688620 DOI: 10.1111/jgs.13279] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Ryuji Sakakibara
- Division of Neurology, Department of Internal Medicine, Sakura Medical Center, Toho University, Sakura, Japan
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