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Kazci O, Ege F, Aydemir H, Kazci S, Aydin S. Can the change of vasomotor activity in irritable bowel syndrome patients be detected via color Doppler ultrasound? World J Radiol 2023; 15:226-233. [PMID: 37545646 PMCID: PMC10401401 DOI: 10.4329/wjr.v15.i7.226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/20/2023] [Accepted: 07/07/2023] [Indexed: 07/24/2023] Open
Abstract
BACKGROUND Irritable bowel syndrome (IBS) is one of the most frequently referred conditions to the gastrointestinal outpatient clinic. The pathophysiology of IBS has not been determined with certainty. Visceral hypersensitivity is indicated as one of the pathophysiologies. The sympathetic nervous system is primarily in charge of controlling the arteries, and its effect is vasospasm in the medium and large arteries, resulting in decreased blood flow.
AIM To demonstrate, using Doppler evaluation of the brachial artery, that sympathetic activity impairs vasomotor performance due to autonomic neuropathy, which we believe is associated with IBS.
METHODS There were 58 participants in the study. The control group consisted of 29 healthy patients, while the remaining 29 patients had been diagnosed with IBS. Patients who met the Rome IV criteria and had IBS were included in the study. People with known polyneuropathy or non-IBS chronic conditions that can progress were excluded from the trial, as were those with essential hypertension, diabetes mellitus, cardiovascular disease, or peripheral arterial disease, and patients diagnosed with anxiety or depression. Those with moderate to severe carpal tunnel syndrome or a median nerve lesion due to trauma were also excluded from the trial. A Doppler probe was used to measure the baseline diameter and flow rates of the brachial artery from 2 cm superior to the antecubital fossa. The Doppler probe remained stationary throughout the experiment, allowing for continuous measurements. Then, to activate the sympathetic fibers, an electrical stimulus for 5 s with an intensity of 10 mA and a frequency of 1 Hz was applied to the median nerve at the wrist level via the bipolar stimulus electrode. The artery diameter and flow rates were measured again immediately following the fifth stimulus.
RESULTS In healthy persons with no history of chronic illness, there was a statistically significant decrease in flow rate after stimulation (P < 0.001). In addition, stimulation resulted in a statistically significant reduction in the diameter of the brachial artery (P < 0.001). Patients diagnosed with IBS had statistically significant vasodilation and an increase in flow rate.
CONCLUSION Sympathetic stimulation causes a reduction in vascular diameter and blood flow, whereas it has the reverse effect on IBS patients. In investigating the involvement of autonomic neuropathy in the development of IBS, significant changes in brachial artery Doppler parameters were observed before and after stimulation of the median nerve with low-current sensory stimulation. This method is thought to be more user-friendly and comfortable than other methods described in the literature.
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Affiliation(s)
- Omer Kazci
- Department of Radiology, Ankara Training and Research Hospital, Ankara 06600, Turkey
| | - Fahrettin Ege
- Department of Neurology, VM Medicalpark Hospital, Ankara 06600, Turkey
| | - Huseyin Aydemir
- Department of Radiology, Erzincan Binali Yildirim University Mengucek Gazi Training and Research Hospital, Erzincan 24400, Turkey
| | - Saliha Kazci
- Department of Epidemiology, Ankara University Faculty of Medicine, Ankara 06600, Turkey
| | - Sonay Aydin
- Department of Radiology, Erzincan Binali Yildirim University Mengucek Gazi Training and Research Hospital, Erzincan 24400, Turkey
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Alcalá‐Gonzalez LG, Malagelada C, Livovsky DM, Azpiroz F. Effect of colonic distension on small bowel motility measured by jejunal high-resolution manometry. Neurogastroenterol Motil 2022; 34:e14351. [PMID: 35318777 PMCID: PMC9540628 DOI: 10.1111/nmo.14351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 02/02/2022] [Accepted: 02/24/2022] [Indexed: 12/29/2022]
Abstract
BACKGROUND Abnormal motility patterns in the jejunum can be detected in patients with prominent colonic content, and these abnormalities may be due to either a primary jejunal dysfunction or a reflex distortion. The objective of the present study was to determine the effect of colonic distension on small bowel postprandial motility using high-resolution manometry. METHODS Single center, controlled, parallel, randomized, single blind study in healthy subjects testing the effect of colonic filling vs sham infusion on the responses to a meal in 16 healthy subjects. Nutrients were continuously infused in the proximal jejunum (2 Kcal/min) during the 2-h study period to induce a steady-state postprandial motor pattern. Jejunal motility was measured by water-perfused, high-resolution manometry. After 1 h postprandial recording (basal period), gas was infused during 7.5 min via a rectal tube (720 mL or sham infusion), and jejunal motility was recorded for another hour. KEY RESULTS Jejunal postprandial motility during the basal period was characterized by two overlapping components: a) continuous segmental activity (non-propagated or shortly propagated) and b) intercurrent propagated fronts (3.8 ± 1.1 fronts of 2-5 clustered contractions/h >10 cm propagation). As compared to sham infusion, colonic gas filling: a) inhibited continuous segmental contractile activity (by 17 ± 4%; p = 0.044 vs control group) and b) stimulated intermittent propagated fronts (up to 9.0 ± 2.2 fronts/h; p = 0.017 vs control group). CONCLUSIONS AND INFERENCES Long retrograde reflexes induced by colonic distension distort the balance between segmental and propagated activity, and may affect the normal response of the jejunum to food ingestion. Jejunal manometry in patients may be artifacted by colonic overload.
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Affiliation(s)
- Luis G. Alcalá‐Gonzalez
- Department of MedicineUniversitat Autònoma de BarcelonaBarcelonaSpain
- Digestive System Research UnitUniversity Hospital Vall d'Hebron BarcelonaCentro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd)BarcelonaSpain
| | - Carolina Malagelada
- Department of MedicineUniversitat Autònoma de BarcelonaBarcelonaSpain
- Digestive System Research UnitUniversity Hospital Vall d'Hebron BarcelonaCentro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd)BarcelonaSpain
| | - Dan M. Livovsky
- Department of MedicineUniversitat Autònoma de BarcelonaBarcelonaSpain
- Digestive System Research UnitUniversity Hospital Vall d'Hebron BarcelonaCentro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd)BarcelonaSpain
| | - Fernando Azpiroz
- Department of MedicineUniversitat Autònoma de BarcelonaBarcelonaSpain
- Digestive System Research UnitUniversity Hospital Vall d'Hebron BarcelonaCentro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd)BarcelonaSpain
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Oliviero G, Ruggiero L, D’Antonio E, Gagliardi M, Nunziata R, Di Sarno A, Abbatiello C, Di Feo E, De Vivo S, Santonicola A, Iovino P. Replay to Response to Oliviero et al.'s Publication: "Impact of COVID-19 lockdown on symptoms in patients with functional gastrointestinal disorders: Relationship with anxiety and perceived stress". Neurogastroenterol Motil 2021; 33:e14263. [PMID: 34499387 PMCID: PMC8646708 DOI: 10.1111/nmo.14263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/06/2021] [Accepted: 08/30/2021] [Indexed: 02/08/2023]
Affiliation(s)
- Giovanni Oliviero
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Luigi Ruggiero
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Elvira D’Antonio
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Mario Gagliardi
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Rubino Nunziata
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Alessandro Di Sarno
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Carmelina Abbatiello
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Elvira Di Feo
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Simona De Vivo
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Antonella Santonicola
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Paola Iovino
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
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Oliviero G, Ruggiero L, D’Antonio E, Gagliardi M, Nunziata R, Di Sarno A, Abbatiello C, Di Feo E, De Vivo S, Santonicola A, Iovino P. Impact of COVID-19 lockdown on symptoms in patients with functional gastrointestinal disorders: Relationship with anxiety and perceived stress. Neurogastroenterol Motil 2021; 33:e14092. [PMID: 33550640 PMCID: PMC7995091 DOI: 10.1111/nmo.14092] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 01/07/2021] [Accepted: 01/12/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND Psychological stress and anxiety, such those generated by forced quarantine, affect gastrointestinal symptoms course in patients with functional gastrointestinal disorders. Thus, our aim was to assess, in a cohort of patients regularly followed up in a devoted outpatient clinic of Southern Italy, the association between their gastrointestinal symptoms changes, stress, and anxiety reported during the Italian lockdown. METHODS We recruited patients from the outpatient clinic of the University of Salerno, devoted to functional gastrointestinal disorders, selecting only patients for whom an evaluation was available in the last 6 months before the lockdown. Gastrointestinal symptoms were evaluated at each visit through standardized questionnaire and pooled in a database. On 45th days from the beginning of the lockdown, patients were re-assessed by phone with the same questionnaire. Anxiety and stress levels were assessed through a self-administered online questionnaire based on Generalized Anxiety Disorder 7 test and Perceived Stress Scale 10 test. KEY RESULTS The intensity-frequency scores of several upper gastrointestinal symptoms improved (Wilcoxon test <0.05). Higher anxiety levels had a higher risk of worsening chest pain (OR 1.3 [1.1-1.7]), waterbrash (OR 1.3 [1.0-1.7]), epigastric burning (OR 1.3 [1.0-1.6]), and abdominal pain (OR 1.6 [1.0-2.3]). When compared to the interval preceding the outbreak, half of the patients declared their symptoms remained unchanged, 13.6% worsened, and 36.4% improved. CONCLUSIONS AND INFERENCES During the COVID-19 quarantine, there was an improvement of the majority of upper gastrointestinal symptoms in our patients, and anxiety seems an important risk of worsening few of them.
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Affiliation(s)
- Giovanni Oliviero
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Luigi Ruggiero
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Elvira D’Antonio
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Mario Gagliardi
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Rubino Nunziata
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Alessandro Di Sarno
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Carmelina Abbatiello
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Elvira Di Feo
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Simona De Vivo
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Antonella Santonicola
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
| | - Paola Iovino
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”University of SalernoBaronissiItaly
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Livovsky DM, Barber C, Barba E, Accarino A, Azpiroz F. Abdominothoracic Postural Tone Influences the Sensations Induced by Meal Ingestion. Nutrients 2021; 13:nu13020658. [PMID: 33670508 PMCID: PMC7922384 DOI: 10.3390/nu13020658] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/12/2021] [Accepted: 02/15/2021] [Indexed: 12/21/2022] Open
Abstract
Postprandial objective abdominal distention is frequently associated with a subjective sensation of abdominal bloating, but the relation between both complaints is unknown. While the bloating sensation has a visceral origin, abdominal distention is a behavioral somatic response, involving contraction and descent of the diaphragm with protrusion of the anterior abdominal wall. Our aim was to determine whether abdominal distention influences digestive sensations. In 16 healthy women we investigated the effect of intentional abdominal distention on experimentally induced bloating sensation (by a meal overload). Participants were first taught to produce diaphragmatic contraction and visible abdominal distention. After a meal overload, sensations of bloating (0 to 10) and digestive well-being (-5 to + 5) were measured during 30-s. maneuvers alternating diaphragmatic contraction and diaphragmatic relaxation. Compared to diaphragmatic relaxation, diaphragmatic contraction was associated with diaphragmatic descent (by 21 + 3 mm; p < 0.001), objective abdominal distension (32 + 5 mm girth increase; p = 0.001), more intense sensation of bloating (7.3 + 0.4 vs. 8.0 + 0.4 score; p = 0.010) and lower digestive well-being (-0.9 + 0.5 vs. -1.9 + 0.5 score; p = 0.028). These results indicate that somatic postural tone underlying abdominal distention worsens the perception of visceral sensations (ClinicalTrials.gov ID: NCT04691882).
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Affiliation(s)
- Dan M. Livovsky
- Digestive System Research Unit, University Hospital Vall d’Hebron, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd), Departament de Medicina, Universitat Autònoma de Barcelona, 08193 Bellaterra (Cerdanyola del Vallès), Spain; (D.M.L.); (C.B.); (A.A.)
- Faculty of Medicine, Hebrew University of Jerusalem, Digestive Diseases Institute, Shaare Zedek Medical Center, Jerusalem 9103401, Israel
| | - Claudia Barber
- Digestive System Research Unit, University Hospital Vall d’Hebron, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd), Departament de Medicina, Universitat Autònoma de Barcelona, 08193 Bellaterra (Cerdanyola del Vallès), Spain; (D.M.L.); (C.B.); (A.A.)
| | - Elizabeth Barba
- Neurogastroenterology Motility Unit, Hospital Clínic, University of Barcelona, 08007 Barcelona, Spain;
| | - Anna Accarino
- Digestive System Research Unit, University Hospital Vall d’Hebron, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd), Departament de Medicina, Universitat Autònoma de Barcelona, 08193 Bellaterra (Cerdanyola del Vallès), Spain; (D.M.L.); (C.B.); (A.A.)
| | - Fernando Azpiroz
- Digestive System Research Unit, University Hospital Vall d’Hebron, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd), Departament de Medicina, Universitat Autònoma de Barcelona, 08193 Bellaterra (Cerdanyola del Vallès), Spain; (D.M.L.); (C.B.); (A.A.)
- Correspondence: ; Tel.: +34-93-274-6259
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Skowron K, Kurnik-Łucka M, Dadański E, Bętkowska-Korpała B, Gil K. Backstage of Eating Disorder-About the Biological Mechanisms behind the Symptoms of Anorexia Nervosa. Nutrients 2020; 12:E2604. [PMID: 32867089 PMCID: PMC7551451 DOI: 10.3390/nu12092604] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/23/2020] [Accepted: 08/25/2020] [Indexed: 12/12/2022] Open
Abstract
Anorexia nervosa (AN) represents a disorder with the highest mortality rate among all psychiatric diseases, yet our understanding of its pathophysiological components continues to be fragmentary. This article reviews the current concepts regarding AN pathomechanisms that focus on the main biological aspects involving central and peripheral neurohormonal pathways, endocrine function, as well as the microbiome-gut-brain axis. It emerged from the unique complexity of constantly accumulating new discoveries, which hamper the ability to look at the disease in a more comprehensive way. The emphasis is placed on the mechanisms underlying the main symptoms and potential new directions that require further investigation in clinical settings.
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Affiliation(s)
- Kamil Skowron
- Department of Pathophysiology, Jagiellonian University Medical College, Czysta St 18, 31-121 Krakow, Poland; (K.S.); (M.K.-Ł.); (E.D.)
| | - Magdalena Kurnik-Łucka
- Department of Pathophysiology, Jagiellonian University Medical College, Czysta St 18, 31-121 Krakow, Poland; (K.S.); (M.K.-Ł.); (E.D.)
| | - Emil Dadański
- Department of Pathophysiology, Jagiellonian University Medical College, Czysta St 18, 31-121 Krakow, Poland; (K.S.); (M.K.-Ł.); (E.D.)
| | - Barbara Bętkowska-Korpała
- Department of Psychiatry, Jagiellonian University Medical College, Institute of Medical Psychology, Jakubowskiego St 2, 30-688 Krakow, Poland;
| | - Krzysztof Gil
- Department of Pathophysiology, Jagiellonian University Medical College, Czysta St 18, 31-121 Krakow, Poland; (K.S.); (M.K.-Ł.); (E.D.)
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Drouin JS, Pfalzer L, Shim JM, Kim SJ. Comparisons between Manual Lymph Drainage, Abdominal Massage, and Electrical Stimulation on Functional Constipation Outcomes: A Randomized, Controlled Trial. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17113924. [PMID: 32492920 PMCID: PMC7313091 DOI: 10.3390/ijerph17113924] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 05/28/2020] [Accepted: 05/29/2020] [Indexed: 12/21/2022]
Abstract
BACKGROUND Evidence supports abdominal massage (AM) or electrical stimulation (ES) as effective in treating functional constipation (FC). Manual lymph drainage (MLD) may also be beneficial, however, it was not previously investigated or compared to ES and AM. METHODS Sixteen college-aged males and 36 females were recruited. Participants were randomly assigned to MLD, AM or ES. Heart rate variability (HRV) measures for total power (TP), high frequency (HF), low frequency and LF/HF ratio assessed ANS outcomes. state-trait anxiety inventory (STAI) and stress response inventory (SRI) assessed psychological factors and bowel movement frequency (BMF) and duration (BMD) were recorded daily. RESULTS MLD significantly improved all ANS measures (p≤0.01); AM significantly improved LF, HF and LF/HF ratios (p = 0.04); and ES significantly improved LF (p = 0.1). STAI measures improved, but not significantly in all groups. SRI improved significantly from MLD (p < 0.01), AM (p = 0.04) and ES (p < 0.01), but changes were not significant between groups. BMD improved significantly in all groups (p≤ 0.02). BMF improved significantly only following MLD and AM (p < 0.1), but differences between groups were not significant (p = 0.39). CONCLUSIONS MLD significantly reduced FC symptoms and MLD had greater improvements than AM or ES.
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Affiliation(s)
- Jacqueline S. Drouin
- School of Health Sciences, Oakland University, 433 Meadow Brook Road, Rochester, MI 48309-4451, USA;
| | - Lucinda Pfalzer
- Physical Therapy Department, University of Michigan-Flint, 2157 WSW Bldg., Flint, MI 48502-195, USA;
| | - Jung Myo Shim
- Department of Skin and Health Care, Suseong University, 15 Dalgubeol-daero 528-gil, Suseong-gu, Daegu 13557, Korea;
| | - Seong Jung Kim
- Department of Physical Therapy, College of Health and Science, Kangwon National University, 346, Hwangjo-gil, Dogye-eup, Samcheok-si, Gangwon-do 24341, Korea
- Correspondence: ; Tel.: +82-33-540-3371
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Is cervical region tightness related to vagal function and stomach symptoms? Med Hypotheses 2020; 142:109819. [PMID: 32408072 DOI: 10.1016/j.mehy.2020.109819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/19/2020] [Accepted: 05/05/2020] [Indexed: 11/21/2022]
Abstract
The vagal nerve is a cranial nerve that carries mainly parasympathetic fibers (average 75%) with both sensory and motor functions. The vagal nerve contains a complex neuro-endocrine-immune network. The majority, at least 66%, of the gastric myenteric neurons receive direct cholinergic excitatory stimulation from the pre-enteric vagal nerve. Changes in vagal function may cause stomach problems, although the mechanisms that change the vagal function have not yet been fully illuminated. Considering the course of the vagal nerve in the cervical region, it is thought that conditions such as stiffness, tightness and decreased elasticity in this region may compress the vagal nerve andmay affect vagal function. According to this hypothesis, neuroinflammation and hyperalgesia may occur in the vagal nerve under mechanical pressure, resulting in increased complaints of pain and burning in the stomach increases. However, as the vagal nerve has various effects on the motility of the stomach and vagal dysfunction affects the motor function of the stomach, relaxation techniques applied to the soft tissues of the cervical region will provide mechanical relief in the nerve. Thus, the vagal nerve will be decompressed and be able to function optimally. According to our clinical observations, in patients whose soft tissues in the cervical region are relaxed, gastric symptoms are decreased. Based on research results and clinical experience, cervical region tightness can be considered to cause stomach problems through the vagal nerve, and soft tissue relaxation of the cervical region can be a promising treatment method for stomach symptoms.
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Eating Disorders and Gastrointestinal Diseases. Nutrients 2019. [PMID: 31842421 DOI: 10.3390/nu11123038.] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Eating disorders (ED) are frequently associated with a wide range of psychiatric or somatic comorbidities. The most relevant ED are anorexia nervosa (AN), bulimia nervosa (BN), and binge eating disorders (BED). Patients with ED exhibit both upper and lower gastrointestinal (GI) symptoms. Evidence of alterations throughout the GI tract in ED will be analyzed given the role of the GI tract in food intake and its regulation. It remains a matter of debate whether GI disorders are inherent manifestations of ED or the results of malnutrition occurring from ED. Moreover, recent clinical studies have highlighted the growing role of intestinal microbiota in the pathogenesis of ED, making it possible to hypothesize a modulation of intestinal microbiota as a co-adjuvant to standard therapy. The aim of this review is to analyze the link between ED and GI diseases and to present, where known, the potential key factors underlying these conditions. Conclusions: The presence of GI disorders should be investigated in patients with ED. Screening for ED should also be encouraged in individuals seeking treatment for unexplained GI complaints to better address therapeutic issues that surround these difficult medical conditions.
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Santonicola A, Gagliardi M, Guarino MPL, Siniscalchi M, Ciacci C, Iovino P. Eating Disorders and Gastrointestinal Diseases. Nutrients 2019; 11:nu11123038. [PMID: 31842421 PMCID: PMC6950592 DOI: 10.3390/nu11123038] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 12/07/2019] [Accepted: 12/09/2019] [Indexed: 02/07/2023] Open
Abstract
Eating disorders (ED) are frequently associated with a wide range of psychiatric or somatic comorbidities. The most relevant ED are anorexia nervosa (AN), bulimia nervosa (BN), and binge eating disorders (BED). Patients with ED exhibit both upper and lower gastrointestinal (GI) symptoms. Evidence of alterations throughout the GI tract in ED will be analyzed given the role of the GI tract in food intake and its regulation. It remains a matter of debate whether GI disorders are inherent manifestations of ED or the results of malnutrition occurring from ED. Moreover, recent clinical studies have highlighted the growing role of intestinal microbiota in the pathogenesis of ED, making it possible to hypothesize a modulation of intestinal microbiota as a co-adjuvant to standard therapy. The aim of this review is to analyze the link between ED and GI diseases and to present, where known, the potential key factors underlying these conditions. Conclusions: The presence of GI disorders should be investigated in patients with ED. Screening for ED should also be encouraged in individuals seeking treatment for unexplained GI complaints to better address therapeutic issues that surround these difficult medical conditions.
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Affiliation(s)
- Antonella Santonicola
- Department of Medicine, Surgery and Dentistry, “Scuola Medica Salernitana”, University of Salerno, 84084 Salerno, Italy; (A.S.); (M.G.); (M.S.); (C.C.)
| | - Mario Gagliardi
- Department of Medicine, Surgery and Dentistry, “Scuola Medica Salernitana”, University of Salerno, 84084 Salerno, Italy; (A.S.); (M.G.); (M.S.); (C.C.)
| | | | - Monica Siniscalchi
- Department of Medicine, Surgery and Dentistry, “Scuola Medica Salernitana”, University of Salerno, 84084 Salerno, Italy; (A.S.); (M.G.); (M.S.); (C.C.)
| | - Carolina Ciacci
- Department of Medicine, Surgery and Dentistry, “Scuola Medica Salernitana”, University of Salerno, 84084 Salerno, Italy; (A.S.); (M.G.); (M.S.); (C.C.)
| | - Paola Iovino
- Department of Medicine, Surgery and Dentistry, “Scuola Medica Salernitana”, University of Salerno, 84084 Salerno, Italy; (A.S.); (M.G.); (M.S.); (C.C.)
- Correspondence: ; Tel.: +39-089965030/+39-3357822672
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Zito FP, Gala A, Genovese D, Vozzella L, Polese B, Cassarano S, Cargiolli M, Andreozzi P, Gelzo M, Sarnelli G, Frisso G, Cuomo R. Mild dehydration in dyspeptic athletes is able to increase gastrointestinal symptoms: Protective effects of an appropriate hydration. Neurogastroenterol Motil 2019; 31:e13520. [PMID: 30556263 DOI: 10.1111/nmo.13520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 10/09/2018] [Accepted: 10/31/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Water balance influences gastrointestinal (GI) activity. Our aim was to evaluate how dehydration and rehydration with different types of water are able to affect GI activity in healthy and dyspeptic athletes. METHODS Twenty non-competitive athletes, respectively 10 healthy and 10 dyspeptic subjects, were enrolled. All subjects underwent three test sessions (0, A, B) of 6 hours. Dehydration was achieved with a walking/jogging exercise test on a treadmill. After exercising, 500 mL of calcium-bicarbonate (Test A) or soft water (Test B) were administered, while no rehydration was provided during Test 0; thereafter, all subjects consumed a light lunch. GI symptoms were evaluated during each test and an electrocardiogram (ECG) Holter recording was performed at the end of the exercise. KEY RESULTS Dyspeptic subjects exhibited higher overall symptoms during Test 0 (VAS: 30.8 ± 0.8 mm) compared to Test A (18.4 ± 1.1, P < 0.001) and Test B (24.4 ± 1.3, P < 0.001). However, analyzing GI symptoms, only subjects receiving calcium-bicarbonate water (Test A) showed significantly lower symptomatic scores compared to Test 0 or Test B. Moreover, heart rate variability analyses revealed that only in Test A dyspeptic patients exhibit a trend to a decrease in the post-prandial low/high frequency (LF/HF) ratio, similarly to healthy subjects, while in Test 0 and Test B, post-prandial LF/HF ratio was increased compared to the pre-prandial phase. CONCLUSIONS AND INFERENCES Our results show that mild dehydration in dyspeptic athletes is able to increase GI symptoms but an adequate rehydration, with calcium-bicarbonate water, is able to improve post-exercise disturbances restoring sympathovagal imbalance.
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Affiliation(s)
- Francesco Paolo Zito
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Antonietta Gala
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Daniela Genovese
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Letizia Vozzella
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Barbara Polese
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Sara Cassarano
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Martina Cargiolli
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Paolo Andreozzi
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Monica Gelzo
- CEINGE Advanced Biotechnology s.c.a.r.l., Naples, Italy.,Department of Molecular Medicine and Medical Biotechnology, Federico II University of Naples, Naples, Italy
| | - Giovanni Sarnelli
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Giulia Frisso
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Rosario Cuomo
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
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13
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Pribic T, Azpiroz F. Biogastronomy: Factors that determine the biological response to meal ingestion. Neurogastroenterol Motil 2018; 30:e13309. [PMID: 29392797 DOI: 10.1111/nmo.13309] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 01/10/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND The biological response to a meal includes physiological changes, primarily related to the digestive process, and a sensory experience, involving sensations related to the homeostatic control of food consumption, eg, satiety and fullness, with a hedonic dimension, ie associated with changes in digestive well-being and mood. The responses to a meal include a series of events before, during and after ingestion. While much attention has been paid to the events before and during ingestion, relatively little is known about the postprandial sensations, which are key to the gastronomical experience. PURPOSE The aim of this narrative review is to provide a comprehensive overview and to define the framework to investigate the factors that determine the postprandial experience. Based on a series of proof-of-concept studies and related information, we propose that the biological responses to a meal depend on the characteristics of the meal, primarily its palatability and composition, and the responsiveness of the guest, which may be influenced by multiple previous and concurrent conditioning factors. This information provides the scientific backbone to the development of personalized gastronomy.
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Affiliation(s)
- T Pribic
- Digestive System Research Unit, University Hospital Vall d'Hebron, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd), Barcelona, Spain.,Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - F Azpiroz
- Digestive System Research Unit, University Hospital Vall d'Hebron, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd), Barcelona, Spain.,Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
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14
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Dore MP, Piras L, Lorettu L, Pes GM. Pattern of psychotropic medications use in a cohort of patients with uninvestigated dyspepsia undergoing upper endoscopy: A retrospective study. Medicine (Baltimore) 2016; 95:e5299. [PMID: 27858904 PMCID: PMC5591152 DOI: 10.1097/md.0000000000005299] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The prevalence of psychotropic drugs usage is growing in the general population. Moreover, patients with dyspeptic symptoms are increasingly referred to the use of psychiatric and antianxiety drugs in addition to the primary medical treatment. The focus of this observational retrospective study was to investigate the burden of psychotropic drugs usage in a cohort of patients with uninvestigated dyspepsia scheduled for esophagogastroduodenoscopy.Medical records of 11,275 patients (4377 men and 6898 women, age range 18-96 years) referred to the Gastroenterology Unit of the University of Sassari, Sardinia, between January 1995 and December 2013 were reviewed. Information regarding any taken medications including psychiatric and antianxiety drugs was collected. Age- and gender-specific frequency of drug usage was calculated, and their association with marital status, smoking habits, place of residence, socioeconomical status, and polypharmacy was investigated by multiple logistic regression analysis.Psychiatric drugs usage was detected in 531 out of 11,275 (4.7%) patients, with preponderance of women (6.1% vs 2.6%, P < 0.0001). The most prescribed drug categories were selective serotonin-reuptake inhibitors and tricyclic antidepressants.The frequency of antianxiety medication use was 9.8% (1009/11,275) and increased with aging, whereas psychiatric drugs reached the plateau in the fifth decade. The cohort effect was remarkable for psychiatric drugs usage in patients born after 1950 compared to those born before (odds ratio: 1.47), whereas it was absent for antianxiety drugs. Conditions significantly associated with psychotropic drugs usage were assumption of more than 2 nonpsychotropic drugs, aging, female gender, smoking, marriage, widowhood, divorce, and socioeconomic status. In contrast, place of residence did not increase the consumption of psychotropic drugs. The influence of marriage and widowhood disappeared after adjusting for all covariates.Our study confirmed the frequent use of psychotropic medications with uninvestigated dyspepsia. However, the pattern of consumption was different for antianxiety and psychiatric drugs.
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Affiliation(s)
- Maria Pina Dore
- Dipartimento di Medicina Clinica e Sperimentale, University of Sassari, Sassari, Italy
- Baylor College of Medicine, Houston, TX
- Correspondence: Prof Maria Pina Dore, Dipartimento di Medicina Clinica e Sperimentale, Clinica Medica, Università di Sassari, Viale San Pietro, 8, Sassari 07100, Italy (e-mail: )
| | - Laura Piras
- Dipartimento di Medicina Clinica e Sperimentale, University of Sassari, Sassari, Italy
| | - Liliana Lorettu
- Dipartimento di Medicina Clinica e Sperimentale, University of Sassari, Sassari, Italy
| | - Giovanni Mario Pes
- Dipartimento di Medicina Clinica e Sperimentale, University of Sassari, Sassari, Italy
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15
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Jarrett ME, Han CJ, Cain KC, Burr RL, Shulman RJ, Barney PG, Naliboff BD, Zia J, Heitkemper MM. Relationships of abdominal pain, reports to visceral and temperature pain sensitivity, conditioned pain modulation, and heart rate variability in irritable bowel syndrome. Neurogastroenterol Motil 2016; 28:1094-103. [PMID: 26993039 PMCID: PMC5283077 DOI: 10.1111/nmo.12812] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 02/03/2016] [Indexed: 12/14/2022]
Abstract
BACKGROUND Irritable bowel syndrome (IBS) is a heterogeneous condition with a number of pathophysiological mechanisms that appear to contribute to symptom chronicity. One of these is altered pain sensitivity. METHODS Women between ages 18-45 were recruited the community. Of those enrolled, 56 had IBS and 36 were healthy control (HC) women. Participants completed questionnaires, kept a 4-week symptom diary and had a 12-h Holter placed to assess nighttime heart rate variability including high frequency power (HF), low frequency power (LF), and total power (TP). At mid-follicular phase approximately 80% of women completed a thermal pain sensitivity test with conditioned pain modulation and visceral pain sensitivity using a water load symptom provocation (WLSP) test. KEY RESULTS As expected, daily abdominal pain was significantly higher in the IBS compared to HC group. There were no differences between the bowel pattern subgroups (IBS-diarrhea [IBS-D], IBS-constipation plus mixed [IBS-CM]). Thermal pain sensitivity did not differ between the IBS and the HC groups, but was significantly higher in the IBS-CM group than the IBS-D group. In the WLSP test, the IBS group experienced significantly more symptom distress than HCs and the IBS-CM group was higher than the IBS-D group. Heart rate variability indicators did not differ between the groups or IBS subgroups. Daily abdominal pain was positively correlated with LF and TP in the IBS group. CONCLUSIONS & INFERENCES Despite similar levels of abdominal pain in IBS, the IBS-CM group demonstrated greater sensitivity to both thermal and visceral testing procedures.
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Affiliation(s)
- Monica E. Jarrett
- Dept. of Biobehavioral Nursing and Health Systems, University of Washington, Seattle, WA
| | - Claire J. Han
- Dept. of Biobehavioral Nursing and Health Systems, University of Washington, Seattle, WA
| | - Kevin C. Cain
- Dept. of Biostatistics and Office of Nursing Research, University of Washington, Seattle, WA
| | - Robert L. Burr
- Dept. of Biobehavioral Nursing and Health Systems, University of Washington, Seattle, WA
| | | | - Pamela G. Barney
- Dept. of Biobehavioral Nursing and Health Systems, University of Washington, Seattle, WA
| | - Bruce D. Naliboff
- UCLA CNS: Center for Neurovisceral Sciences & Women’s Health, UCLA, Los Angeles, CA
| | - Jasmine Zia
- Division of Gastroenterology, School of Medicine, University of Washington Medical Center, Seattle, WA
| | - Margaret M. Heitkemper
- Dept. of Biobehavioral Nursing and Health Systems, University of Washington, Seattle, WA,Corresponding author. Please address all correspondence to: Margaret M. Heitkemper, PhD, Department of Biobehavioral Nursing and Health Systems, University of Washington, Box 357266, Seattle, WA 98195-7266, 206-543-1091 (voice), 206-543-4771 (fax),
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16
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Davydov DM, Naliboff B, Shahabi L, Shapiro D. Baroreflex mechanisms in Irritable Bowel Syndrome: Part I. Traditional indices. Physiol Behav 2016; 157:102-8. [PMID: 26836276 DOI: 10.1016/j.physbeh.2016.01.042] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 01/28/2016] [Accepted: 01/29/2016] [Indexed: 12/13/2022]
Abstract
OBJECTIVE This study was conducted to present evidence of differences in autonomic regulation of cardiovascular activity and its role in the severity of specific (disease-related) and non-specific (negative affect and chronic pain-related) symptoms in individuals with Irritable Bowel Syndrome (IBS). METHODS Seventy-eight female patients with IBS and 27 healthy women age 18-62 years were assessed for IBS symptoms, negative affect, and baroreceptor sensitivity (BRS), blood pressure (BP), heart rate, and heart rate variability (HRV) at rest. Direct and indirect regression effects were examined with application of the bootstrap procedure to validate findings. RESULTS IBS was reliably related to lower resting BRS, higher BP, and higher negative affect compared to healthy controls. Longer disease duration (chronicity) was related to BRS decrease coupled with systolic BP increase (95% CIs=-0.14 to -0.01). Three autonomic mechanisms associated with BRS decrease were found to further regulate severity of IBS symptoms. Lower BRS was related to higher IBS severity in general if the effect was transferred through the decrease of low frequency power of HRV (e.g., 95% CIs=-0.039 to -0.001 for abdominal pain severity). However, lower BRS was related to lower IBS severity in general if the effect was transferred through diastolic BP increase (95% CIs=0.01-0.11 for abdominal pain severity). Lower BRS was related to higher abdominal pain severity coupled with high negative affect if the effect was transferred through the decrease of higher frequency power of HRV (95% CIs=-0.026 to -0.003). CONCLUSIONS These findings indicate that different cardiovascular mechanisms are associated with IBS development and the increase and decrease of severity of IBS symptoms. Their assessment suggests ways to personalize treatment of IBS.
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Affiliation(s)
- Dmitry M Davydov
- Laboratory of Neuroimmunopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences, 8 Baltiyskaia ul., Moscow 125315, Russia.
| | - Bruce Naliboff
- Department of Medicine, David Geffen School of Medicine at UCLA, 10833 Le Conte Avenue, Los Angeles, CA 90095, United States; Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA, 760 Westwood Plaza, Los Angeles, CA 90095, United States.
| | - Leila Shahabi
- Department of Medicine, David Geffen School of Medicine at UCLA, 10833 Le Conte Avenue, Los Angeles, CA 90095, United States.
| | - David Shapiro
- Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA, 760 Westwood Plaza, Los Angeles, CA 90095, United States.
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17
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Tremolaterra F, Gallotta S, Morra Y, Lubrano E, Ciacci C, Iovino P. The severity of irritable bowel syndrome or the presence of fibromyalgia influencing the perception of visceral and somatic stimuli. BMC Gastroenterol 2014; 14:182. [PMID: 25323092 PMCID: PMC4288631 DOI: 10.1186/1471-230x-14-182] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2013] [Accepted: 10/09/2014] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Fibromyalgia Syndrome (FMS) is a frequent comorbidity in Irritable Bowel Syndrome (IBS) patients with a higher functional bowel disorder severity index (FBDSI). We tested the possibility that mild to severe IBS patients without FMS would have a graduated visceral and somatic perception, and the presence of FMS would further enhance somatic, but conversely attenuate visceral perception.Our aim was to study visceral and somatic sensitivity in mild IBS patients and in severe IBS patients with or without FMS. METHODS Eleven mild IBS and 19 severe IBS with and without FMS patients were studied. Somatic and visceral stimuli were applied in each patient by means of electrical stimulations at active and control sites and by means of an electronic barostat in the rectum. Thresholds for discomfort and perception cumulative scores were measured. RESULTS Mild and severe IBS patients without FMS demonstrated a significantly lower somatic perception cumulative score than severe IBS patients with FMS at active site. Conversely only severe IBS patients without FMS had significantly lower visceral thresholds for discomfort than mild IBS patients and severe IBS patients with FMS. CONCLUSIONS The presence of co-existing FMS or greater FBDSI affects somatic and visceral perception in a graded fashion across IBS patients.
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Affiliation(s)
- Fabrizio Tremolaterra
- Digestive Endoscopic Unit, Department of Surgery, A.O.R. “San Carlo”, Via Potito Petrone, 85100 Potenza, Italy
| | - Serena Gallotta
- Gastrointestinal Unit, Department of Medicine and Surgery, University of Salerno, Via S. Allende, 84081 Baronissi, SA Italy
| | - Yvonne Morra
- Gastrointestinal Unit, Department of Medicine and Surgery, University of Salerno, Via S. Allende, 84081 Baronissi, SA Italy
| | - Ennio Lubrano
- Department of Medicine and Health Sciences, University of Molise, Via F. De Sanctis, 86100 Campobasso, Italy
| | - Carolina Ciacci
- Gastrointestinal Unit, Department of Medicine and Surgery, University of Salerno, Via S. Allende, 84081 Baronissi, SA Italy
| | - Paola Iovino
- Gastrointestinal Unit, Department of Medicine and Surgery, University of Salerno, Via S. Allende, 84081 Baronissi, SA Italy
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Brawn J, Morotti M, Zondervan KT, Becker CM, Vincent K. Central changes associated with chronic pelvic pain and endometriosis. Hum Reprod Update 2014; 20:737-47. [PMID: 24920437 DOI: 10.1093/humupd/dmu025] [Citation(s) in RCA: 161] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Chronic pelvic pain (CPP) is a significant public health problem with 1 million affected women in the UK. Although many pathologies are associated with CPP, the pain experienced is often disproportionate to the extent of disease identified and frequently no pathology is found (chronic pelvic pain syndrome). The central nervous system (CNS) is central to the experience of pain and chronic pain conditions in general are associated with alterations in both the structure and function of the CNS. This review describes the available evidence for central changes in association with conditions presenting with CPP. METHODS A detailed literature search was performed to identify relevant papers, however, this is not a systematic review. RESULTS CPP is associated with central changes similar to those identified in other pain conditions. Specifically these include, alterations in the behavioural and central response to noxious stimulation, changes in brain structure (both increases and decreases in the volume of specific brain regions), altered activity of both the hypothalamic-pituitary-adrenal axis and the autonomic nervous system (ANS) and psychological distress. CONCLUSIONS The evidence reviewed in this paper demonstrates that CPP is associated with significant central changes when compared with healthy pain-free women. Moreover, the presence of these changes has the potential to both exacerbate symptoms and to predispose these women to the development of additional chronic conditions. These findings support the use of adjunctive medication targeting the CNS in these women.
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Affiliation(s)
- Jennifer Brawn
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - Matteo Morotti
- Nuffield Department of Obstetrics and Gynaecology, University of Oxford, Women's Centre, John Radcliffe Hospital, Oxford, UK Department of Obstetrics and Gynaecology, University of Genoa, Genoa 16100, Italy
| | - Krina T Zondervan
- Nuffield Department of Obstetrics and Gynaecology, University of Oxford, Women's Centre, John Radcliffe Hospital, Oxford, UK
| | - Christian M Becker
- Nuffield Department of Obstetrics and Gynaecology, University of Oxford, Women's Centre, John Radcliffe Hospital, Oxford, UK
| | - Katy Vincent
- Nuffield Department of Obstetrics and Gynaecology, University of Oxford, Women's Centre, John Radcliffe Hospital, Oxford, UK
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19
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Li M, Lu B, Chu L, Zhou H, Chen MY. Prevalence and characteristics of dyspepsia among college students in Zhejiang Province. World J Gastroenterol 2014; 20:3649-3654. [PMID: 24707150 PMCID: PMC3974534 DOI: 10.3748/wjg.v20.i13.3649] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 09/24/2013] [Accepted: 01/02/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the prevalence and characteristics of uninvestigated dyspepsia among college students in Zhejiang Province.
METHODS: Young adult students attending undergraduate (within the 4-year program) and graduate (only first-year students) colleges in Zhejiang Province were recruited between November 2010 and March 2011 to participate in the self-report survey study. The questionnaire was designed to collect data regarding demographics (sex and age), general health [weight and height, to calculate body mass index (BMI)], and physical episodes related to gastrointestinal disorders. Diagnosis of dyspepsia and irritable bowel syndrome (IBS) was made according to the Rome III criteria. Gastroesophageal reflux disease (GERD) was defined by episodes of heartburn and/or acid reflux that occurred at least once a week, according to the Montreal definition.
RESULTS: Of 2520 students recruited for survey participation, only 1870 (males: 967; age range: 17-32 years, mean age: 21.3 years) returned a completed questionnaire. One hundred and eight (5.67%) of the student participants fit the criteria for dyspepsia diagnosis. Stratification analysis of dyspepsia and non-dyspepsia cases showed no statistically significant differences in age or BMI; however, the prevalence of dyspepsia was significantly higher in women than in men (7.53% vs 4.14%, P < 0.05). Stratification analysis of dyspepsia by grade level showed that year 4 undergraduate students had a significantly higher prevalence of dyspepsia (10.00% vs undergraduate year 1: 5.87%, year 2: 3.53% and year 3: 7.24%, and graduate year 1: 3.32%). Nearly all (95.37%) students with dyspepsia reported symptoms of postprandial distress syndrome, but only a small portion (4.63%) reported symptoms suggestive of abdominal pain syndrome. The students with dyspepsia also showed significantly higher rates of IBS (16.67% vs non-dyspepsia students: 6.30%, P < 0.05) and GERD (11.11% vs 0.28%, P < 0.05).
CONCLUSION: Although the prevalence of dyspepsia among Zhejiang college students is low, the significantly higher rates of concomitant IBS and GERD suggest common pathophysiological disturbances.
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20
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Camilleri M. Physiological underpinnings of irritable bowel syndrome: neurohormonal mechanisms. J Physiol 2014; 592:2967-80. [PMID: 24665101 DOI: 10.1113/jphysiol.2014.270892] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The gastrointestinal tract is a vast neuroendocrine organ with extensive extrinsic and intrinsic neural circuits that interact to control its function. Circulating and paracrine hormones (amine and peptide) provide further control of secretory, absorptive, barrier, motor and sensory mechanisms that are essential to the digestion and assimilation of nutrients, and the transport and excretion of waste products. Specialized elements of the mucosa (including enteroendocrine cells, enterocytes and immune cells) and the microbiome interact with other intraluminal contents derived from the diet, and with endogenous chemicals that alter the gut's functions. The totality of these control mechanisms is often summarized as the brain-gut axis. In irritable bowel syndrome (IBS), which is the most common gastrointestinal disorder, there may be disturbances at one or more of these diverse control mechanisms. Patients present with abdominal pain in association with altered bowel function. This review documents advances in understanding the pathophysiological mechanisms in the brain-gut axis in patients with IBS. It is anticipated that identification of one or more disordered functions in clinical practice will usher in a renaissance in the management of IBS, leading to effective therapy tailored to the needs of the individual patient.
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Affiliation(s)
- Michael Camilleri
- Clinical Enteric Neuroscience Translational and Epidemiological Research (CENTER), Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine, Rochester, MN, USA
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21
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Liu Q, Wang EM, Yan XJ, Chen SL. Autonomic functioning in irritable bowel syndrome measured by heart rate variability: a meta-analysis. J Dig Dis 2013; 14:638-46. [PMID: 23927739 DOI: 10.1111/1751-2980.12092] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To analyze autonomic functioning which presented as the high frequency (HF) component of heart rate variability, a measurement of vagal tone, and the ratio of low frequency (LF) to HF (LF : HF), an indicator of sympathovagal balance in irritable bowel syndrome (IBS) patients. METHODS We identified relevant studies by performing a literature search of MEDLINE, EMBASE and the ISI Web of Knowledge to 31 March 2013. Pooled effect sizes with 95% confidence interval (CI) were calculated using a random effects model. Between-study heterogeneity was assessed using the Q test and I(2) statistic. RESULTS In all, 11 articles including 392 IBS patients and 263 controls met the inclusion criteria of the analysis. IBS patients had lower HF band power (Hedges's g = -0.38, 95% CI -0.68 to -0.09) than the controls (I(2) = 63.6%, P = 0.003). Moreover, IBS patients showed a higher LF : HF (Hedges's g = 0.43, 95% CI 0.13-0.74), with no significant heterogeneity. A subgroup analysis of the HF index according to the recording time yielded different results for the IBS patients and controls. Additionally, constipation-predominant IBS (IBS-C) patients had decreased HF band power, whereas no significant difference was found in LF : HF. CONCLUSIONS Impaired parasympathetic functioning and abnormal sympathovagal balance may be involved in the pathogenesis of IBS. Vagal dysfunction is more obvious in the IBS-C subgroup.
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Affiliation(s)
- Qing Liu
- Department of Gastroenterology, Ren Ji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Institute of Digestive Disease, Shanghai, China
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Seo AY, Kim N, Oh DH. Abdominal bloating: pathophysiology and treatment. J Neurogastroenterol Motil 2013; 19:433-53. [PMID: 24199004 PMCID: PMC3816178 DOI: 10.5056/jnm.2013.19.4.433] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 09/10/2013] [Accepted: 10/16/2013] [Indexed: 12/13/2022] Open
Abstract
Abdominal bloating is a very common and troublesome symptom of all ages, but it has not been fully understood to date. Bloating is usually associated with functional gastrointestinal disorders or organic diseases, but it may also appear alone. The pathophysiology of bloating remains ambiguous, although some evidences support the potential mechanisms, including gut hypersensitivity, impaired gas handling, altered gut microbiota, and abnormal abdominal-phrenic reflexes. Owing to the insufficient understanding of these mechanisms, the available therapeutic options are limited. However, medical treatment with some prokinetics, rifaximin, lubiprostone and linaclotide could be considered in the treatment of bloating. In addition, dietary intervention is important in relieving symptom in patients with bloating.
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Affiliation(s)
- A Young Seo
- Department of Internal Medicine, Seoul National University, Bundang Hospital, Seongnam, Gyeonggi-do, Korea
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Stasi C, Bellini M, Costa F, Mumolo MG, Ricchiuti A, Grosso M, Duranti E, Metelli MR, Gambaccini D, Bianchi L, Di Tanna GL, Laffi G, Taddei S, Marchi S. Neuroendocrine markers and psychological features in patients with irritable bowel syndrome. Int J Colorectal Dis 2013; 28:1203-8. [PMID: 23377858 DOI: 10.1007/s00384-013-1646-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/21/2013] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND AIMS The key role of the brain-gut axis in the pathophysiology of irritable bowel syndrome (IBS) has been recognized. The aim of this study was to assess the possible association between IBS, neuroendocrine markers, and psychological features. METHODS One hundred and twenty-five consecutive IBS patients and 105 healthy subjects were enrolled. Plasma serotonin, plasma and urinary cortisol, and plasma neuropeptide Y levels were evaluated. All patients were given a questionnaire to assess IBS symptom severity. In 66 patients, a psychodiagnostic assessment was carried out. RESULTS A high incidence of specific psychological features, including state anxiety (69.69 %), trait anxiety (54.54 %), obsessions and compulsions (28.78 %), was observed in IBS patients. A positive correlation between neuropeptide Y and state anxiety (r = 0.287, p = 0.024) and simulation/social ingenuity (r = 0.269, p = 0.039) was found in these patients. In diarrhea-predominant IBS, plasma cortisol was linearly related to plasma serotonin (r = 0.5663, p < 0.001). CONCLUSIONS In IBS patients, a significant correlation was found between specific psychological features and neuroendocrine markers, especially plasma cortisol and neuropeptide Y; in diarrhea-predominant IBS, a correlation between plasma cortisol and serotonin was found, although it needs to be confirmed in more extensive cohorts.
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Affiliation(s)
- Cristina Stasi
- Department of Internal Medicine, University of Florence, Florence, Italy.
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Mazur M, Furgała A, Jabłoński K, Mach T, Thor P. Autonomic nervous system activity in constipation-predominant irritable bowel syndrome patients. Med Sci Monit 2012; 18:CR493-499. [PMID: 22847198 PMCID: PMC3560712 DOI: 10.12659/msm.883269] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Background The main mechanism underlying irritable bowel syndrome is currently believed to be a dysfunction of the brain-gut axis. Autonomic nervous system dysfunction can contribute to development of irritable bowel syndrome symptoms by disturbing visceral sensations. Material/Methods Thirty patients with a diagnosis of constipation-predominant irritable bowel syndrome and 30 healthy volunteers were included in the study. Resting and functional autonomic nervous system tests and percutaneous electrogastrography were performed. Plasma adrenalin, noradrenalin, insulin, ghrelin and cholecystokinin activity was analyzed. Results Increased sympathetic activation with disturbed parasympathetic function was demonstrated. Patients had substantially higher plasma catecholamine concentration, which confirms sympathetic overbalance. Hyperinsulinemia may explain sympathetic predominance followed by gastric and intestinal motility deceleration. Abnormal, reduced ghrelin and cholecystokinin titre may disturb brain-gut axis functioning and may be responsible for gastric motility deceleration. In electrogastrography, distinctly lower values of fasting normogastria percentage and dominant power were observed. Patients had substantially lower slow wave coupling percentage both in fasting and postprandial periods, which negatively correlated with plasma catecholamines level. Gastric myoelectrical activity disturbances may result from lack of sympatho-parasympathetic equilibrium. Conclusions Central sympathetic influence within the brain-gut axis is most probably responsible for myoelectrical activity disturbances in irritable bowel syndrome patients.
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Affiliation(s)
- Marcel Mazur
- Department of Pathophysiology, Jagiellonian University, Medical College, Cracow, Poland
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Sinagra E, Romano C, Cottone M. Psychopharmacological treatment and psychological interventions in irritable bowel syndrome. Gastroenterol Res Pract 2012; 2012:486067. [PMID: 22956940 PMCID: PMC3432371 DOI: 10.1155/2012/486067] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Revised: 05/28/2012] [Accepted: 07/04/2012] [Indexed: 12/11/2022] Open
Abstract
Irritable bowel syndrome (IBS) accounts for 25% of gastroenterology output practice, making it one of the most common disorders in this practice. Psychological and social factors may affect the development of this chronic disorder. Furthermore, psychiatric symptoms and psychiatric diseases are highly prevalent in this condition, but the approach to treating these is not always straightforward. As emphasized in the biopsychosocial model of IBS, with regard to the modulatory role of stress-related brain-gut interactions and association of the disease with psychological factors and emotional state, it proves useful to encourage psychopharmacological treatments and psychosocial therapies, both aiming at reducing stress perception. The aim of this paper is to analyze the effectiveness of psychopharmacological treatment and psychological interventions on irritable bowel syndrome.
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Affiliation(s)
- Emanuele Sinagra
- Division of Internal Medicine “Villa Sofia-V. Cervello” Hospital, University of Palermo, Via Trabucco 180, 90146 Palermo, Italy
| | - Claudia Romano
- Division of Internal Medicine “Villa Sofia-V. Cervello” Hospital, University of Palermo, Via Trabucco 180, 90146 Palermo, Italy
| | - Mario Cottone
- Division of Internal Medicine “Villa Sofia-V. Cervello” Hospital, University of Palermo, Via Trabucco 180, 90146 Palermo, Italy
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Keszthelyi D, Troost FJ, Masclee AA. Irritable bowel syndrome: methods, mechanisms, and pathophysiology. Methods to assess visceral hypersensitivity in irritable bowel syndrome. Am J Physiol Gastrointest Liver Physiol 2012; 303:G141-54. [PMID: 22595988 DOI: 10.1152/ajpgi.00060.2012] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Irritable bowel syndrome (IBS) is a common functional gastrointestinal disorder, characterized by recurrent abdominal pain or discomfort in combination with disturbed bowel habits in the absence of identifiable organic cause. Visceral hypersensitivity has emerged as a key hypothesis in explaining the painful symptoms in IBS and has been proposed as a "biological hallmark" for the condition. Current techniques of assessing visceral perception include the computerized barostat using rectal distensions, registering responses induced by sensory stimuli including the flexor reflex and cerebral evoked potentials, as well as brain imaging modalities such as functional magnetic resonance imaging and positron emission tomography. These methods have provided further insight into alterations in pain processing in IBS, although the most optimal method and condition remain to be established. In an attempt to give an overview of these methods, a literature search in the electronic databases PubMed and MEDLINE was executed using the search terms "assessment of visceral pain/visceral nociception/visceral hypersensitivity" and "irritable bowel syndrome." Both original articles and review articles were considered for data extraction. This review aims to discuss currently used modalities in assessing visceral perception, along with advantages and limitations, and aims also to define future directions for methodological aspects in visceral pain research. Although novel paradigms such as brain imaging and neurophysiological recordings have been introduced in the study of visceral pain, confirmative studies are warranted to establish their robustness and clinical relevance. Therefore, subjective verbal reporting following rectal distension currently remains the best-validated technique in assessing visceral perception in IBS.
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Affiliation(s)
- D Keszthelyi
- Top Institute Food and Nutrition, Wageningen, The Netherlands.
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Sharma A, Paine P, Rhodes S, Warburton F, Chua YC, Aziz Q. The autonomic response to human esophageal acidification and the development of hyperalgesia. Neurogastroenterol Motil 2012; 24:e285-93. [PMID: 22672237 DOI: 10.1111/j.1365-2982.2012.01929.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Distal esophageal acidification induces variable hyperalgesia in the non-acid exposed proximal esophagus. As the autonomic nervous system (ANS) modulates nociception, the aim was to determine whether autonomic reactivity to acid infusion predicted inter-individual differences in hyperalgesia. METHODS In 25 healthy volunteers (18 women, age range 22-58, mean 36.5 years), using a double-blind, placebo-controlled crossover design, pain thresholds to electrical stimulation were determined in the proximal esophagus and foot (control) pre and post a 30-min distal esophageal infusion of 0.15 mol L(-1) HCl or saline with autonomic monitoring. Sympathetic Cardiac Sympathetic Index and Skin Conductance Response and parasympathetic Cardiac Vagal Tone and Cardiac Sensitivity to Baroreflex measures were derived. Plasma cortisol was measured pre and post infusion as were anxiety and unpleasantness. KEY RESULTS Acid infusion reduced group pain threshold in the proximal esophagus (adjusted mean change -5.0 mA vs saline +3.4 mA, P < 0.001), and raised sympathetic measures (Cardiac Sympathetic Index, Skin Conduction Response) and cortisol levels, but reduced parasympathetic measures (cardiac vagal tone and cardiac sensitivity to Baroreflex) (all P < 0.05). Acid infusion also increased anxiety and unpleasantness scores (both P < 0.05). In 16 acid-sensitizers, the degree of hyperalgesia correlated with increasing heart rate (r = -0.66, P = 0.005), and fall in cardiac vagal tone (r = 0.54, P = 0.03) and Cardiac Sensitivity to Baroreflex (r = 0.54, P = 0.03). CONCLUSIONS & INFERENCES Acid-induced esophageal hyperalgesia correlated with reduced parasympathetic tone, suggesting that the parasympathetic nervous system may have anti hyperalgesic properties. Additional studies on the autonomic modulation of esophageal hyperalgesia are required.
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Affiliation(s)
- A Sharma
- GI Science Group, Salford Royal Foundation Trust, Salford, UK
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Mazurak N, Seredyuk N, Sauer H, Teufel M, Enck P. Heart rate variability in the irritable bowel syndrome: a review of the literature. Neurogastroenterol Motil 2012; 24:206-16. [PMID: 22256893 DOI: 10.1111/j.1365-2982.2011.01866.x] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Patients with irritable bowel syndrome (IBS) often present with disturbances of bowel habits (diarrhea, constipation) and abdominal pain/discomfort that are modulated by the autonomic nerve system (ANS). In this narrative review, we analyzed studies that measured ANS functioning in IBS by means of heart rate variability (HRV). METHODS The PUBMED was searched with the keywords 'irritable bowel syndrome' AND ('heart rate variability' OR 'autonomic function'). We included only papers that used 'traditional' HRV indices and diagnosed IBS based on Manning or Rome criteria. Studies were sub-grouped according to methodological features of HRV analysis (24-h monitoring, short-term laboratory records, records during sleep). KEY RESULTS Most studies reported no difference in HRV when the IBS population was compared to healthy controls. Dividing the IBS sample into subgroups--according to their predominant bowel symptoms, the severity of clinical course, the presence of depressive symptoms, or a history of abuse in the past--revealed changes in autonomic functioning. CONCLUSIONS & INFERENCES Patients with IBS appear to experience symptoms that may be the result of changes in ANS functioning. HRV measures in clinical routine may allow assessing these changes, but further studies performed in a standardized fashion should improve the validity of HRV measures for clinical research first.
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Affiliation(s)
- N Mazurak
- Department of Psychosomatic Medicine and Psychotherapy, University Hospital, Tübingen, Germany
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Salari P, Abdollahi M. Systematic review of modulators of benzodiazepine receptors in irritable bowel syndrome: Is there hope? World J Gastroenterol 2011; 17:4251-7. [PMID: 22090780 PMCID: PMC3214699 DOI: 10.3748/wjg.v17.i38.4251] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2011] [Revised: 05/20/2011] [Accepted: 05/27/2011] [Indexed: 02/06/2023] Open
Abstract
Several drugs are used in the treatment of irritable bowel syndrome (IBS) but all have side effects and variable efficacy. Considering the role of the gut-brain axis, immune, neural, and endocrine pathways in the pathogenesis of IBS and possible beneficial effects of benzodiazepines (BZD) in this axis, the present systematic review focuses on the efficacy of BZD receptor modulators in human IBS. For the years 1966 to February 2011, all literature was searched for any articles on the use of BZD receptor modulators and IBS. After thorough evaluation and omission of duplicate data, 10 out of 69 articles were included. BZD receptor modulators can be helpful, especially in the diarrhea-dominant form of IBS, by affecting the inflammatory, neural, and psychologic pathways, however, controversies still exist. Recently, a new BZD receptor modulator, dextofisopam was synthesized and studied in human subjects, but the studies are limited to phase IIb clinical trials. None of the existing trials considered the neuroimmunomodulatory effect of BZDs in IBS, but bearing in mind the concentration-dependent effect of BZDs on cytokines and cell proliferation, future studies using pharmacodynamic and pharmacokinetic approaches are highly recommended.
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Acosta RD, Cash BD. Existing and emerging therapies for irritable bowel syndrome. Expert Opin Emerg Drugs 2011; 16:389-402. [PMID: 21438740 DOI: 10.1517/14728214.2011.566214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Irritable bowel syndrome is a common disorder that is associated with a significant impact on both affected individuals and society. While the pathophysiology of irritable bowel syndrome remains unknown, knowledge regarding the normal and abnormal functions of the gut and its complex interaction with the body's nervous systems continues to shed light on the multifactorial origins of irritable bowel syndrome symptoms. This article provides an overview of the current knowledge of the therapeutic approaches to irritable bowel syndrome. AREAS COVERED A search of the online bibliographic databases MEDLINE and EMBASE was performed in order to identify all relevant articles published between 1980 and 2010. The search was enhanced with the use of a medical librarian. Bibliographies from potentially relevant articles were manually searched. EXPERT OPINION The therapeutic options for irritable bowel syndrome are rapidly evolving beyond traditional symptom-based therapies, such as fiber, antispasmodics, antidiarrheals and laxatives, and are moving toward agents with organ-specific receptor selectivity directed, in many cases, at specific gastrointestinal functions.
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Affiliation(s)
- Ruben D Acosta
- National Naval Medical Center and Walter Reed Army Medical Center, Division of Gastroenterology, 8901 Wisconsin Avenue, Bethesda, MD 20889-5000, USA
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Elevated expression of c-fos in central nervous system correlates with visceral hypersensitivity in irritable bowel syndrome (IBS): a new target for IBS treatment. Int J Colorectal Dis 2011; 26:1035-44. [PMID: 21340718 PMCID: PMC3140936 DOI: 10.1007/s00384-011-1153-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/01/2011] [Indexed: 02/04/2023]
Abstract
BACKGROUND AND AIMS Although visceral hypersensitivity is a major pathophysiological feature of irritable bowel syndrome (IBS), its molecular mechanisms are still poorly understood. c-fos is a well-established marker of cell activation. Accumulating evidence demonstrates that norepinephrine (NE) system is dysregulated in IBS; however, very little is known on its mechanism. It is our hypothesis that elevated expression of c-fos in central nervous system (CNS) correlates with visceral hypersensitivity in rat model of IBS. Furthermore, we explored the changes of NE system in IBS patients. METHODS The rat model of IBS was induced by heterotypic chronic and acute stress. Tissues obtained from rat model were analyzed for c-fos levels in CNS (frontal lobe, hippocampus, cornu dorsale) and colon by immunohistochemistry. Real-time reverse transcription polymerase chain reaction was used to detect tyrosine hydroxylase (TH) in the colonic tissues obtained from IBS patients. RESULTS The rat model of IBS was associated with increased expression of c-fos in different parts of CNS (P = 0.001, P = 0.002, and P = 0.002, respectively), but normal in colon (P = 0.207). The clinical parameters (colonic motility and sensation) of rat model were significantly correlated with elevated c-fos in CNS (P < 0.05). Enterochromaffin cells and serotonin in colon were related to the elevated c-fos in CNS (P < 0.05). The TH messenger ribonucleic acid (mRNA level of IBS-D patients was almost four times as much as that of controls. CONCLUSIONS Elevated expression of c-fos in CNS might be one of key mechanisms in etiology of IBS. Therefore, regulation of CNS activation could be a major targeting effect when treating IBS patients.
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Hattori T, Watanabe S, Kano M, Kanazawa M, Fukudo S. Differential responding of autonomic function to histamine H₁ antagonism in irritable bowel syndrome. Neurogastroenterol Motil 2010; 22:1284-91, e335. [PMID: 20667004 DOI: 10.1111/j.1365-2982.2010.01568.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND The role of histamine in the pathophysiology of irritable bowel syndrome (IBS) is largely unknown. Dysfunction of the autonomic nervous system (ANS) in IBS patients is also not fully confirmed. We hypothesized that blockade of histamine H₁ receptors affects ANS responses differently between IBS subjects and controls. METHODS Subjects were 12 IBS subjects and 12 age- and sex-matched controls. Either 100 μg kg⁻¹ chlorphenamine or the same amount of saline was administered on different days. The rectum was stimulated with electrical currents of 0 mA (sham) or 30 mA. Autonomic nervous system function was measured using mean arterial pressure (MAP), heart rate (HR), high frequency (HF) component of HR variability, low frequency/high frequency ratio (LF/HF ratio) and plasma catecholamines and histamine. Subjective perceived stress during the examination was evaluated on an ordinate scale. KEY RESULTS Mean arterial pressure showed significant effects of diagnosis (P < 0.05) and drug × diagnosis interaction (P < 0.05). The MAP significantly increased after chlorphenamine administration in IBS subjects, but not in controls. Heart rate revealed a significant drug effect (P < 0.001), which decreased after chlorphenamine administration in controls, but not in IBS subjects. Perceived stress significantly increased by rectal stimulation (P < 0.001) and a significant stimulus × diagnosis interaction (P < 0.05) was revealed, indicating greater reduction in IBS subjects by chlorphenamine. CONCLUSION & INFERENCES Sympathetic vasomotor tone in IBS subjects differentially responded on administration of a histamine H₁ antagonist to that of controls. These findings suggest an increased histaminergic activity in IBS subjects.
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Affiliation(s)
- T Hattori
- Department of Behavioral Medicine, Tohoku University Graduate School of Medicine, Aoba, Sendai, Japan
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Abstract
OBJECTIVE Anxiety at the time of gastrointestinal injury or inflammation increases the risk of developing visceral hyperalgesia. Distal esophageal acidification induces hyperalgesia in the non-acid exposed proximal esophagus, due to the sensitization of spinal dorsal horn neurones. The objective was to determine whether anxiety influences acid-induced hyperalgesia. METHODS A total of 19 healthy volunteers (n = 12 females; age, 22-57 years; mean, 35.7 years) completed a 10-minute mood induction paradigm (anxiety or neutral) with autonomic monitoring (visit 1). On visits 2 and 3, pain thresholds to electrical stimulation, in milliamperes (mA), were determined in the proximal esophagus and foot (control) before and after a 30-minute infusion of 0.15 M of hydrochloric acid. During esophageal acid infusion, the subjects randomly received anxiety or neutral mood induction with autonomic monitoring, in a crossover design. Anxiety and pain ratings were recorded pre and post infusion. RESULTS Visit 1: Anxiety induction increased anxiety scores (p < .001), mean arterial pressure (p < .001), and cardiac sympathetic index (p = .007), and reduced parasympathetic measures (cardiac vagal tone [p = .05] and cardiac sensitivity to baroreflex [p = .006)]). Visit 2: Anxiety induction conferred greater acid-induced hyperalgesia compared with neutral (-4.9 mA versus 2.7 mA, p = .009, analysis of covariance). No differences in autonomic measures were found during acid infusion with anxiety or neutral mood induction. CONCLUSIONS Anxiety induction increases acid-induced esophageal hyperalgesia; anxiety, thus, facilitates central sensitization in the esophagus. Our studies provide a new model for studying the effects of anxiety on esophageal hyperalgesia and may allow testing of therapeutic strategies to reduce this effect.
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Wong F, Rodrigues AC, King CD, Riley JL, Schmidt S, Vierck CJ, Mauderli AP. Relationships between Irritable Bowel Syndrome Pain, Skin Temperature Indices of Autonomic Dysregulation, and Sensitivity to Thermal Cutaneous Stimulation. PAIN RESEARCH AND TREATMENT 2010; 2010:949027. [PMID: 22110918 PMCID: PMC3196965 DOI: 10.1155/2010/949027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2010] [Accepted: 06/03/2010] [Indexed: 01/18/2023]
Abstract
This study evaluated relationships between irritable bowel syndrome (IBS) pain, sympathetic dysregulation, and thermal pain sensitivity. Eight female patients with diarrhea-predominant IBS and ten healthy female controls were tested for sensitivity to thermal stimulation of the left palm. A new method of response-dependent thermal stimulation was used to maintain pain intensity at a predetermined level (35%) by adjusting thermal stimulus intensity as a function of pain ratings. Clinical pain levels were assessed prior to each testing session. Skin temperatures were recorded before and after pain sensitivity testing. The temperature of palmar skin dropped (1.5°C) when the corresponding location on the opposite hand of control subjects was subjected to prolonged thermal stimulation, but this response was absent for IBS pain patients. The patients also required significantly lower stimulus temperatures than controls to maintain a 35% pain rating. Baseline skin temperatures of patients were significantly correlated with thermode temperatures required to maintain 35% pain ratings. IBS pain intensity was not significantly correlated with skin temperature or pain sensitivity. The method of response-dependent stimulation revealed thermal hyperalgesia and increased sympathetic tone for chronic pain patients, relative to controls. Similarly, a significant correlation between resting skin temperatures and thermal pain sensitivity for IBS but not control subjects indicates that tonic sympathetic activation and a thermal hyperalgesia were generated by the chronic presence of visceral pain. However, lack of a significant relationship between sympathetic tone and ratings of IBS pain casts doubt on propositions that the magnitude of IBS pain is determined by psychological stress.
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Affiliation(s)
- Fong Wong
- Department of Prosthodontics, College of Dentistry, University of Florida, 1600 SW Archer Rd, D11-006 Gainesville, FL 32610, USA
| | | | - Christopher D. King
- Department of Community Dentistry and Behavioral Science, College of Dentistry, University of Florida, 1600 SW Archer Rd, D11-006 Gainesville, FL 32610, USA
| | - Joseph L. Riley
- Department of Community Dentistry and Behavioral Science, College of Dentistry, University of Florida, 1600 SW Archer Rd, D11-006 Gainesville, FL 32610, USA
| | - Siegfried Schmidt
- Community Health & Family Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Charles J. Vierck
- Department of Neuroscience, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Andre P. Mauderli
- Department of Prosthodontics, College of Dentistry, University of Florida, 1600 SW Archer Rd, D11-006 Gainesville, FL 32610, USA
- Department of Neuroscience, College of Medicine, University of Florida, Gainesville, FL 32610, USA
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Lackner JM, Brasel AM, Quigley BM, Keefer L, Krasner SS, Powell C, Katz LA, Sitrin MD. The ties that bind: perceived social support, stress, and IBS in severely affected patients. Neurogastroenterol Motil 2010; 22:893-900. [PMID: 20465594 PMCID: PMC5052070 DOI: 10.1111/j.1365-2982.2010.01516.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND This study assessed the association between social support and the severity of irritable bowel syndrome (IBS) symptoms in a sample of severely affected IBS patients recruited to an NIH-funded clinical trial. In addition, we examined if the effects of social support on IBS pain are mediated through the effects on stress. METHODS Subjects were 105 Rome II diagnosed IBS patients (F = 85%) who completed seven questionnaires which were collected as part of a pretreatment baseline assessment. KEY RESULTS Partial correlations were conducted to clarify the relationships between social support and clinically relevant variables with baseline levels of psychopathology, holding constant number of comorbid medical diseases, age, gender, marital status, ethnicity, and education. Analyses indicated that social support was inversely related to IBS symptom severity. Social support was positively related with less severe pain. A similar pattern of data was found for perceived stress but not quality of life impairment. Regression analyses examined if the effects of social support on pain are mediated by stress. The effects of social support on bodily pain were mediated by stress such that the greater the social support the less stress and the less pain. This effect did not hold for symptom severity, quality of life, or psychological distress. CONCLUSIONS & INFERENCES This study links the perceived adequacy of social support to the global severity of symptoms of IBS and its cardinal symptom (pain). It also suggests that the mechanism by which social support alleviates pain is through a reduction in stress levels.
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Affiliation(s)
- J M Lackner
- Division of Gastroenterology, Department of Medicine, University at Buffalo School of Medicine, SUNY, Buffalo, NY, USA.
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Wan H, Chen Y. Effects of antidepressive treatment of Saint John's wort extract related to autonomic nervous function in women with irritable bowel syndrome. Int J Psychiatry Med 2010; 40:45-56. [PMID: 20565044 DOI: 10.2190/pm.40.1.d] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND AND AIM Irritable bowel syndrome (IBS) patients usually manifest autonomic nerve dysfunctions and abnormal psychological behaviors. This study was to assess autonomic nervous system (ANS) response to different stressor as well as evaluate effects of antidepressive treatment of Saint John's Wort Extract in women with IBS. METHOD Thirty women with IBS and 20 healthy women underwent serial ANS function tests. Five-minute-short-time heart rate variability (HRV) spectral analysis were assessed at a stress or resting recording period. Hamilton Depression Scale (HAMD) and Hamilton Anxiety Scale (HAMA) were used to measure their anxiety and depression conditions. After 8-weeks' antidepressant treatment, groups of IBS repeated the tests above. Subjects also completed a GI symptom diary once daily during the 2 weeks before therapy and for 2 weeks in the last scheduled therapy session. RESULTS IBS-group showed a higher score in HAMA and HAMD (p < 0.01) and showed a significant increase in the low frequency band/high frequency band ratio (L/H) during the period in different stimuli (p <0.01), which was significantly different from controls. After 8-weeks' antidepressive treatment, L/H showed a significant decrease (p < 0.05) response to different stressor, which was significantly different from pre-treatment. Gastrointestinal (GI) symptoms of IBS were also relieved significantly. CONCLUSIONS Antidepressive treatment can improve the conditions of psychology and the ANS reactivity to stress in patients with IBS.
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Affiliation(s)
- Hongyu Wan
- Department of Gastroenterology, Shanghai Songjiang District Central Hospital, Shanghai, China.
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Abstract
After many decades debating whether the clinical manifestations of patients with functional digestive symptoms originate "in their minds" or "in their guts," arguments remain strong on both sides of the controversy. However, advances in understanding of gut physiology and pathophysiology, and persuasive evidence on the bidirectionality of the regulatory traffic between the enteric and central nervous systems, are helping to characterize clinical situations in which we can legitimately speak of gut dysfunction, as opposed to others where symptoms are not associated with apparent or detectable gut disturbances and may truly represent somatization of an affective disorder. In this review, we describe available clinically applicable technology, albeit in specialized clinical research units, that may be used to discern whether or not challenging patients have gut sensory or motor disturbances. The practical yield of applying such methods to diagnostic investigation may be substantial, because it establishes a plausible mechanism of disease that may be used in patient management and patient persuasion, to remove uncertainties and to prevent futile repetition of conventional diagnostic tests. By evolving from symptom analysis to mechanism-based diagnosis, our gastroenterology community may progress toward the goal of delivering the full diagnostic spectrum from altered morphology to disturbed function.
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Affiliation(s)
- Carolina Malagelada
- Digestive System Research Unit, University Hospital Vall d'Hebron, 08035, Barcelona, Spain
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Kaji M, Fujiwara Y, Shiba M, Kohata Y, Yamagami H, Tanigawa T, Watanabe K, Watanabe T, Tominaga K, Arakawa T. Prevalence of overlaps between GERD, FD and IBS and impact on health-related quality of life. J Gastroenterol Hepatol 2010; 25:1151-6. [PMID: 20594232 DOI: 10.1111/j.1440-1746.2010.06249.x] [Citation(s) in RCA: 170] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVE Gastroesophageal reflux disease (GERD), functional dyspepsia (FD), and irritable bowel syndrome (IBS) are common, and have negative impacts on health-related quality of life (HR-QOL). Several studies demonstrated a significant overlap between two of these three diseases. The purpose of this study was to examine the prevalence of GERD, FD, and IBS, their overlap rates, and HR-QOL for each disease and each overlap compared with healthy controls in the Japanese general population. METHODS We performed a cross-sectional study of Japanese workers who visited a clinic for a routine health check-up, and asked them to fill out a self-report questionnaire. Prevalence and overlap rate of GERD defined as heartburn and/or acid regurgitation at least weekly, FD and IBS based on Rome III criteria, and HR-QOL by SF-8 were examined. RESULTS Of the 2680 eligible subjects, 207 (7.7%) were diagnosed as having GERD, 269 (10.0%) as FD, and 381 (14.2%) as IBS. Overlaps were found in 46.9% in GERD, 47.6% in FD, and 34.4% in IBS. Prevalence of overlaps in subjects with IBS was significantly lower compared with those among GERD or FD. Sufferers from GERD, FD, or IBS reported significantly poorer HR-QOL across all domains compared with controls. Overlaps significantly worsened HR-QOL in most domains except in the 'role emotional' domain. HR-QOL was particularly poor in the physical component summary for overlapping GERD and in the mental component summary for overlapping IBS. CONCLUSION Overlaps among GERD, FD and IBS were common and worsened HR-QOL in Japanese general population.
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Affiliation(s)
- Makiko Kaji
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
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Iovino P, Tremolaterra F, Boccia G, Miele E, Ruju FM, Staiano A. Irritable bowel syndrome in childhood: visceral hypersensitivity and psychosocial aspects. Neurogastroenterol Motil 2009; 21:940-e74. [PMID: 19368655 DOI: 10.1111/j.1365-2982.2009.01303.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Visceral hypersensitivity is often considered to play a major etiologic role in the pathophysiology of irritable bowel syndrome in adults, and some authors argue that this increased sensitivity is mainly due to psychological factors. In contrast, there are no data in children with irritable bowel syndrome which confirm this relationship. The aim of the study was to evaluate the relationship between psychosocial aspects and sensorymotor function in children affected by irritable bowel syndrome. Ten children fulfilling the Rome II criteria for irritable bowel syndrome and seven healthy controls were enrolled. We studied the thresholds and the perception of visceral stimuli in the rectum by means of an electronic barostat (isobaric phasic distentions, 3 mmHg/1 min, interval 1 min) and a validated questionnaire. Personality features were evaluated by means of the Big Five Questionnaire for Children. Sleep, mood disturbance, anxiety and individual performance (missed school days, school results and social activities) were also evaluated. Children with irritable bowel syndrome showed significantly lower thresholds for discomfort (14.8 +/- 3.5 vs 22.3 +/- 6.9 mmHg, P = 0.010) and a higher cumulative perception score (28.2 +/- 11.1 vs 12.3 +/- 8.0, P = 0.005) compared with healthy controls. A higher emotional instability (57.8 +/- 7.0 vs 48.7 +/- 10.1, P = 0.047), sleep disturbance (7.2 +/- 1.0 vs 9.3 +/- 0.5, P = 0.004) and anxiety (6.3 +/- 2.0 vs 2.3 +/- 1.7, P = 0.009) were observed in irritable bowel syndrome patients. Moreover, in a multivariate analysis, the cumulative perception score was significantly related to emotional instability (P = 0.042). In conclusion children with irritable bowel syndrome exhibit visceral hypersensitivity and psychosocial impairment. Emotional instability, as a personality feature in these children, seems to modulate the perception response to visceral stimulations.
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Affiliation(s)
- P Iovino
- Gastroenterology and Endoscopic Units, University Federico II, Naples, Italy.
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Basic and clinical aspects of gastrointestinal pain. Pain 2009; 141:191-209. [PMID: 19155134 DOI: 10.1016/j.pain.2008.12.011] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2008] [Revised: 09/29/2008] [Accepted: 12/03/2008] [Indexed: 12/12/2022]
Abstract
The gastrointestinal (GI) tract is a system of organs within multicellular animals which facilitates the ingestion, digestion, and absorption of food with subsequent defecation of waste. A complex arrangement of nerves and ancillary cells contributes to the sensorimotor apparatus required to subserve such essential functions that are with the exception of the extreme upper and lower ends of the GI tract normally subconscious. However, it also has the potential to provide conscious awareness of injury. Although this function can be protective, when dysregulated, particularly on a chronic basis, the same system can lead to considerable morbidity. The anatomical and molecular basis of gastrointestinal nociception, conditions associated with chronic unexplained visceral pain, and developments in treatment are presented in this review.
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Zou N, Lv H, Li J, Yang N, Xue H, Zhu J, Qian J. Changes in brain G proteins and colonic sympathetic neural signaling in chronic-acute combined stress rat model of irritable bowel syndrome (IBS). Transl Res 2008; 152:283-9. [PMID: 19059163 DOI: 10.1016/j.trsl.2008.10.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2008] [Revised: 10/04/2008] [Accepted: 10/06/2008] [Indexed: 10/24/2022]
Abstract
The role of the brain-gut axis interaction in the pathogenesis of irritable bowel syndrome (IBS) is not well understood. To examine this possibility, a novel rat model of IBS subjected to both chronic and acute stress (CAS) was established. G proteins play a crucial role in the pathophysiology of depression. The alpha 2A adrenoceptor (alpha(2A)-AR) and the norepinephrine reuptake transporter (NET) determine the sympathetic signal activity. It is conceivable that stress may induce brain G proteins, colonic alpha(2A)-ARs, and NET abnormal expression, which may be responsible for the abnormalities in IBS. Colonic motility, visceral sensation, and secretion were assessed by counting fecal pellets, abdominal muscle contractions in response to colorectal balloon distension (CRD), and short-circuit current study, respectively. Western blot analysis was used to investigate the expression of G proteins, alpha(2A)-ARs, and NET. Compared with control animals, the colonic epithelial secretion, fecal pellets, and numbers of abdominal muscle contraction induced by CRD were significantly higher in both acute stress only (AS) and CAS rats. However, the G proteins, alpha(2A)-AR, and NET expression changed differently in AS and CAS rats. We showed that exposure to either AS or CAS would cause the increase of secretion, motility, and sensation, but the change of protein expression in brain-gut axis was different. It may be responsible for the pathogenesis of IBS.
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Affiliation(s)
- Ning Zou
- Peking Union Medical College Hospital [corrected]
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Heitkemper MM, Jarrett ME. Update on irritable bowel syndrome and gender differences. Nutr Clin Pract 2008; 23:275-83. [PMID: 18595860 DOI: 10.1177/0884533608318672] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Irritable bowel syndrome (IBS) is a chronic functional GI disorder characterized by abdominal pain associated with alterations in defecation or stool frequency and consistency. In Western industrialized countries, women seek health care services for their symptoms more frequently than men. The cause of IBS is likely multifactorial involving altered motility, visceral hypersensitivity, and dysregulation of the autonomic nervous system. Many patients note that their symptoms are exacerbated by diet and stress, and women frequently report menstrual cycle fluctuations in symptoms. Current approaches to IBS management include behavioral management therapies such as dietary intake changes and stress reduction cognitive restructuring. Drug therapies are targeted at altering pain sensitivity, motility, and secretion. This review provides an overview of the pathogenesis of IBS, factors that contribute to gender differences, and current therapeutic approaches for symptom management.
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Affiliation(s)
- Margaret M Heitkemper
- Department of Biobehavioral Nursing, University of Washington, Seattle, WA 98195, USA.
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Vianna EPM, Naqvi N, Bechara A, Tranel D. Does vivid emotional imagery depend on body signals? Int J Psychophysiol 2008; 72:46-50. [PMID: 18824045 DOI: 10.1016/j.ijpsycho.2008.01.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2007] [Accepted: 01/02/2008] [Indexed: 12/19/2022]
Abstract
The recall and re-experiencing of a personal emotional event (emotional imagery) are thought to evoke neural activity in the central nervous system that can affect the physiology of bodily states. It has been proposed that the more active the neural systems previously engaged in the emotional experience, and the more active the bodily state associated with that experience, the more vivid the emotional imagery is. The sympathetic nervous system (SNS) and the gastrointestinal system (GI) are engaged in emotional reactions. On this basis, we hypothesized that vivid emotional imagery would be accompanied by strong increases in gastrointestinal and sympathetic nervous system activity. To test this hypothesis, 17 healthy participants performed emotional imagery of strong autobiographical memories involving various emotional states (happy, fear, disgust, sadness, anger). SNS and GI changes, measured by skin conductance and electrogastrogram, respectively, correlated positively with subjective ratings of arousal during the imagery. However, the SNS changes did not correlate with ratings of emotional imagery vividness, and even more intriguingly, the GI changes correlated strongly and negatively with vividness ratings. To account for these findings, we propose that in highly vivid imagery experience, the central nervous system is simulating the whole emotional experience strongly, and bodily information plays a lesser role. In low vivid imagery experience, the central nervous system is not simulating very strongly the emotional experience, and information coming from the body (including the GI system) plays a greater role. This interpretation is set forth in the context of Damasio's [Damasio, A., (1999) The feeling of what happens: body and emotion in the making of consciousness, Orlando, Fl, Harcourt.] theoretical framework, which predicts such a dissociation between a "body loop" and an "as if body loop" for the experiencing and re-experiencing of emotions and feelings.
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Heitkemper M, Jarrett M. Irritable bowel syndrome: does gender matter? J Psychosom Res 2008; 64:583-7. [PMID: 18501258 DOI: 10.1016/j.jpsychores.2008.02.020] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2007] [Revised: 02/05/2008] [Accepted: 02/07/2008] [Indexed: 02/07/2023]
Abstract
In industrialized parts of the world, women seek health care services for irritable bowel syndrome (IBS) more frequently than men. The role of gender in IBS is likely multifactorial involving inherent physiological differences in gonadal hormones, stress reactivity, and inflammatory responses, as well as sociocultural differences in response to pain and/or bowel pattern changes. This mini-review in particular addresses gender differences in visceral sensitivity, motility, and autonomic nervous system balance as potential factors contributing to gender differences in IBS presentation.
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Affiliation(s)
- Margaret Heitkemper
- Department of Biobehavioral Nursing and Health Systems, University of Washington, Seattle, WA 98195, USA.
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Leventer SM, Raudibaugh K, Frissora CL, Kassem N, Keogh JC, Phillips J, Mangel AW. Clinical trial: dextofisopam in the treatment of patients with diarrhoea-predominant or alternating irritable bowel syndrome. Aliment Pharmacol Ther 2008; 27:197-206. [PMID: 17973974 DOI: 10.1111/j.1365-2036.2007.03566.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Dextofisopam modulates stimulated activity in animal models of stress, altered bowel motility, and visceral hypersensitivity. AIM To evaluate the effects of dextofisopam in men and women with diarrhoea-predominant or alternating irritable bowel syndrome (IBS) (d-IBS or a-IBS). METHODS In this double-blind, placebo-controlled study, patients were randomly assigned to receive dextofisopam 200 mg b.d. or placebo for 12 weeks. The prospectively defined primary endpoint was number of months of adequate overall relief of IBS symptoms. Bowel function was assessed primarily via stool frequency and consistency. RESULTS Of 140 enrolled patients, 66 received dextofisopam and 74 placebo; 73% of the patients were women, and 78% had d-IBS. Dextofisopam was superior to placebo on the primary endpoint (P = 0.033). In d-IBS patients treated with dextofisopam, both men and women had improved stool consistency, but stool frequency was reduced only in women. Benefit diminished over time on the primary endpoint, but persisted on frequency and consistency. Dextofisopam and placebo had similar rates and types of adverse events, with more events of worsening abdominal pain with dextofisopam (12% vs. 4%) and more headaches with placebo (12% vs. 5%). Constipation was rare. CONCLUSION Dextofisopam should be further evaluated as a new treatment for men and women with d-IBS and a-IBS.
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Walter S, Bodemar G, Hallböök O, Thorell LH. Sympathetic (electrodermal) activity during repeated maximal rectal distensions in patients with irritable bowel syndrome and constipation. Neurogastroenterol Motil 2008; 20:43-52. [PMID: 17919314 DOI: 10.1111/j.1365-2982.2007.00998.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Irritable bowel syndrome (IBS) is associated with visceral hypersensitivity, stress and autonomic dysfunction. Sympathetic activity during repeated events indicates excitatory or inhibitory mechanisms such as sensitization or habituation. We investigated skin conductance (SC) during repetitive rectal distensions at maximal tolerable pressure in patients with IBS and chronic constipation. Twenty-seven IBS patients, 13 constipation patients and 18 controls underwent two sets of isobaric rectal distensions. First, maximal tolerable distension was determined and then it was repeated five times. Skin conductance was measured continuously. Subjective symptom assessment remained steady in all groups. The baseline values of SC were higher in IBS patients than in patients with constipation and significantly lower in constipation patients than in controls. The maximal SC response to repetitive maximal distensions was higher in IBS patients compared with constipation patients. The amplitude of the initial SC response decreased successively with increased number of distensions in patients with IBS and constipation but not in controls. Irritable bowel syndrome and constipation patients habituated to maximal repetitive rectal distensions with decreasing sympathetic activity. Irritable bowel syndrome patients had higher sympathetic reactivity and baseline activity than constipation patients. A lower basal SC in constipation patients compared with controls suggests an inhibition of the sympathetic drive in constipation patients.
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Affiliation(s)
- S Walter
- Department of Molecular and Clinical Medicine, University of Linköping, Sweden.
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van der Veek PPJ, Steenvoorden M, Steens J, van der Schaar PJ, Brussee J, Masclee AAM. Recto-colonic reflex is impaired in patients with irritable bowel syndrome. Neurogastroenterol Motil 2007; 19:653-9. [PMID: 17640180 DOI: 10.1111/j.1365-2982.2007.00921.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Motor and sensory dysfunction of the gut are present in a subset of patients with irritable bowel syndrome (IBS). Recent studies have demonstrated the presence of a recto-colonic inhibitory reflex in healthy humans. It is not known whether this reflex exists in IBS. We studied rectal compliance, perception and the recto-colonic reflex by measuring volume responses of the descending colon to rectal distentions by barostat in 26 IBS patients and 13 healthy controls under both fasting and postprandial conditions. In the fasting state, rectal distention inhibited colonic tone and phasic motility to a similar extent in health and IBS. After a meal, rectal distention inhibited colonic tone and phasic motility to a lesser degree (P < 0.05) in IBS than health. Under postprandial but not fasting conditions, rectal distentions of increasing intensity were associated with higher pain scores in IBS than in health. Rectal distention inhibits tonic and phasic motility of the descending colon in healthy controls and in IBS patients. Postprandially this recto-colonic inhibitory reflex is impaired and attenuated in IBS patients compared with controls. These findings point to an altered reflex function in IBS and have implications for pathophysiology and therapy.
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Affiliation(s)
- P P J van der Veek
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands.
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Smith C, Nordstrom E, Sengupta JN, Miranda A. Neonatal gastric suctioning results in chronic visceral and somatic hyperalgesia: role of corticotropin releasing factor. Neurogastroenterol Motil 2007; 19:692-9. [PMID: 17640185 DOI: 10.1111/j.1365-2982.2007.00949.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Abstract Gastric suctioning is common in neonatal intensive care units. Studies suggest that gastric suctioning in premature infants may play a role in the development of visceral hyperalgesia. We hypothesized that repeated orogastric suctioning during the neonatal period results in chronic alterations in visceral and somatic sensation through a corticotropin-releasing factor mediated mechanism. Neonatal male Long Evans rats (n = 13) received daily orogastric suctioning for 10 days starting at postnatal day two (P2). Control rats (n = 15) were handled similarly without orogastric suction. A second study group was subjected to a similar protocol, only with pre-emptive administration of a CRF1 receptor antagonist (antalarmin, 20 mg/kg, IP) (n = 8). The control group received vehicle only (n = 8). An additional group was given antalarmin without suctioning (n = 5). After these rats grew to adulthood (PN 60), a visceromotor response to graded colorectal distension was recorded (10-80 mmHg, 30s, 180s inter-stimulus intervals) to assess changes in visceral sensitivity. Paw withdrawal latency to noxious heat applied to the hind paws was measured to assess changes in cutaneous sensitivity. Orogastric suctioning during the neonatal period results in global chronic somatic and visceral hyperalgesia in adult rats. Visceral hyperalgesia is prevented by pre-emptive administration of the CRF1 receptor antagonist, antalarmin.
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Affiliation(s)
- C Smith
- Department of Pediatrics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA
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Simrén M, Abrahamsson H, Björnsson ES. Lipid-induced colonic hypersensitivity in the irritable bowel syndrome: the role of bowel habit, sex, and psychologic factors. Clin Gastroenterol Hepatol 2007; 5:201-8. [PMID: 17174611 DOI: 10.1016/j.cgh.2006.09.032] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Duodenal lipid infusion increases colonic hypersensitivity in irritable bowel syndrome (IBS). Whether this is affected by bowel habit, psychologic factors, or sex is unknown. METHODS We included 61 patients with IBS (50 women, 11 men), 25 with diarrhea-predominant IBS, 17 with constipation-predominant IBS, 19 with alternating-type IBS, and 20 healthy controls (15 women, 5 men). A colonic distension trial was performed with a barostat before and after a 1-hour duodenal lipid infusion (3 kcal/min). Colonic thresholds, colonic tone, and the viscerosomatic referral pattern were assessed and compared between groups. Patients also completed the Hospital Anxiety and Depression scale. RESULTS The reduction in colonic pressure thresholds after vs before duodenal lipids was greater in patients than in controls for discomfort (P = .006) and pain (P < .0001). An increased viscerosomatic referral area for pain and discomfort during colonic distensions after vs before duodenal lipids was observed in patients but not in controls. The response was similar in IBS subgroups based on the predominant bowel habit, in patients with vs without anxiety and/or depression, and in women and men with IBS. The colonic tone response during lipid infusion was similar in IBS patients and controls, and in the different IBS subgroups. CONCLUSIONS IBS patients show increased colonic sensitivity and altered viscerosomatic referral pattern after duodenal lipids. This response is largely unaffected by the predominant bowel habit, psychologic factors, or sex, but seems to be related to IBS per se.
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Affiliation(s)
- Magnus Simrén
- Department of Internal Medicine, Sahlgrenska University Hospital, Göteborg, Sweden.
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Lee YC, Wang HP, Chiu HM, Huang SP, Liao SC, Chen MF, Lin JT, Wu MS. GABRA6 genetic polymorphism is associated with the risk of functional heartburn in Chinese. J Gastroenterol Hepatol 2007; 22:227-33. [PMID: 17295876 DOI: 10.1111/j.1440-1746.2006.04441.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIM Polymorphisms of GABA(A)alpha6 (GABRA6)-1521 and IL-1beta-511 have been linked with susceptibility to stress and gastric acid secretion. The aim of this study was to assess psychiatric profiles and GABRA6 and IL-1beta genotypes in functional heartburn, an important esophageal reflux condition. METHODS Psychological symptoms were assessed with a Brief Symptom Rating Scale and personality traits with a short-form Maudsley Personality Inventory. DNA from 452 healthy controls, 80 controls with neurosis, and 122 patients with functional heartburn was genotyped with PCR-RFLP technique. RESULTS Symptom-scale parameters (except hostility) were significantly higher in patients with functional heartburn than in healthy controls; their neuroticism scores were also higher, but extroversion scores were lower. Distribution of GABRA6 genotypes in patients with functional heartburn showed more heterozygotes than among healthy controls and neurotic subjects, but distributions of IL-1beta genotypes were similar. Multiple logistic regression analysis showed GABRA6 heterozygosity was significantly associated with functional heartburn (odds ratio, 2.37; 95% confidence interval, 1.36-4.12; P < 0.01) even after adjustment for age, sex, Helicobacter pylori infection, General Symptom Index, and score of neuroticism. CONCLUSIONS Chinese patients with certain psychiatric characteristics and GABRA6 heterozygosity are probably predisposed to functional heartburn, providing insight into this condition's psychopathology and genetics.
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Affiliation(s)
- Yi-Chia Lee
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
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