159 results on '"Agreus L"'
Search Results
52. Is the Glasgow Dyspepsia Severity Score a useful tool for the measurement of dyspepsia?
- Author
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Talley, N.J., Agreus, L., Veldhuyzen van Zanten, S., Talley, N.J., Agreus, L., and Veldhuyzen van Zanten, S.
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- 1997
53. Challenges in managing dyspepsia in general practice
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Agreus, L., Talley, N., Agreus, L., and Talley, N.
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- 1997
54. Risken för allvarlig komplikation mycket liten (replik)
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Agreus, L. and Agreus, L.
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- 1996
55. Vad håller Amalgamenheten i Uppsala på med?
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Agreus, L. and Agreus, L.
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- 1996
56. Dyspepsi - duger anamnesen?
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Agreus, L. and Agreus, L.
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- 1996
57. Allmänmedicin och traumatologi - de många kontaktytornas konst
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Agreus, L. and Agreus, L.
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- 1996
58. Helicobacter pylori seropositivity among Swedish adults with and without abdominal symptoms. A population-based epidemiologic study
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Agreus, L., Engstrand, L., Svardsudd, K., Nyren, O., Tibblin, G., Agreus, L., Engstrand, L., Svardsudd, K., Nyren, O., and Tibblin, G.
- Published
- 1995
59. Irritable Bowel Syndrome and Dyspepsia in the General Population: Overlap and Lack of Stability Over Time
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Agreus, L., Svardsudd, K., Nyren, O., Tibblin, G., Agreus, L., Svardsudd, K., Nyren, O., and Tibblin, G.
- Published
- 1995
60. Quality of life in duodenal ulcer treatment: A comparison of omeprazole and ranitidine in acute and intermittent treatment
- Author
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Hallerbäck, B., primary, Glise, H., additional, Svedlund, J., additional, Agreus, L., additional, Gäcke-Herbst, R., additional, and Engstrand, C., additional
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- 1998
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61. Natural history of reflux, dyspepsia and irritable bowel over 7 years in the general population
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Agreus, L., primary, Talley, N.J., additional, Svärdsudd, K., additional, Nyrén, O., additional, Tibblin, G., additional, and Jones, M.P., additional
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- 1998
- Full Text
- View/download PDF
62. Is it possible to simplify the definition of the irritable bowel syndrome in population-based studies and clinical practice
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Agreus, L., primary, Talley, N.J., additional, Svärdsudd, K., additional, Nyrén, O., additional, Tibblin, G., additional, and Jones, M.P., additional
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- 1998
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63. Challenges in managing dyspepsia in general practice
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Agreus, L., primary and Talley, N., additional
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- 1997
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64. Letter to the Editors
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Agreus, L., primary, Xia, H.H.-X., additional, and alley, N.J. T, additional
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- 1997
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65. 158. Prediction pathways for innate immune pathology, IBS, anxiety and depression in a general population (the PopCol study)
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Andreasson, A.N., Jones, M.P., Walker, M.M., Talley, N.J., Nyhlin, H., and Agréus, L.
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- 2013
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66. The association between overall abdominal pain but not sole epigastric pain and poor self-rated health is explained by depressive symptoms
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Nixon Andreasson, A. and Agréus, L.
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- 2011
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67. PGI27 STRUCTURED MANAGEMENT STRATEGY BASED ON THE GERDQ QUESTIONNAIRE VERSUS USUAL PRIMARY CARE FOR GASTROESOPHAGEAL REFLUX DISEASE: META-ANALYSIS OF FIVE EUROPEAN CLUSTER RANDOMIZED TRIALS
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Ponce, J, Garrigues, V, Agréus, L, Tabaglio, E, Gschwantler, M, Guallar, E, Tafalla, M, Nuevo, J, and Hatlebakk, JG
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- 2010
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68. DYSPEPSIA: CURRENT UNDERSTANDING AND MANAGEMENT.
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Agreus, L. and Talley, N. J.
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INDIGESTION treatment , *PATIENTS , *DISEASES - Abstract
Discusses the causes and treatment of dyspepsia. Symptom subgroups in dyspepsia; Findings in several consecutive primary health care patients complaining of dyspepsia; Management plan for patients presenting with new-onset dyspepsia.
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- 1998
69. Dense genotyping of immune-related loci identifies HLA variants associated with increased risk of collagenous colitis
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Westerlind H, Mellander MR, Bresso F, Munch A, Bonfiglio F, Assadi G, Rafter J, Hübenthal M, Lieb W, Källberg H, Brynedal B, Padyukov L, Halfvarson J, Törkvist L, Bjork J, Andreasson A, Agreus L, Sven Almer, Miehlke S, and Madisch A
70. Hypertriglyceridemic waist may explain ethnic differences in hypertension among patients with type 2 diabetes in Sweden
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Taloyan Marina, Saleh-Stattin Nuha, Johansson Sven-Erik, Agréus Lars, and Wändell Per
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Ethnicity ,Hypertension ,Hypertriglyceridemic waist ,Type 2 diabetes ,Sweden ,Medicine ,Biology (General) ,QH301-705.5 ,Science (General) ,Q1-390 - Abstract
Abstract Background Hypertension is common among persons with type 2 diabetes. The aim of this study was to analyze the association between ethnicity and hypertension prevalence after adjusting for age, sex, Hba1c, total cholesterol, elevated triglycerides and hypertriglyceridemic waist. The study population consisted of 354 primary health care patients diagnosed with type 2 diabetes (173 Assyrians/Syrians and 181 Swedes) residing in Södertälje, Sweden. Unconditional logistic regression was used to analyze the data. Results Hypertension prevalence was higher among Swedes than Assyrians/Syrians, (77% versus 58%; p = 0.001). In the unadjusted logistic regression model, the odds ratio for hypertension in Swedes was twice as high than that in Assyrians/Syrians (OR = 2.44; 95% CI =1.54-3.86). In the age- and sex-adjusted model, odds ratio of hypertension was 2.25 (95% CI 1.41-3.60). After adjustments for total cholesterol was made, the odds ratio of hypertension decreased slightly to 1.73. When elevated triglycerides and hypertriglyceridemic waist were separately introduced, the odds ratio of hypertension was no longer significant between the ethnic groups (1.60 and 1.43 for triglycerides and hypertriglyceridemic waist respectively). In addition, advanced age – 60–69 years old (OR = 1.80, CI 95% 1.00-3.20) and ≥ 70 years old (OR = 2.88, CI 95% 1.40-5.93), elevated total cholesterol (OR = 1.48, CI 95% 1.12-1.95) and presents of hypertriglyceridemic waist (those with high WC and high TG) were significant confounding factors for the increased risk of hypertension independent of ethnicity. Conclusions The crude differences in prevalence of hypertension between the Swedes and Assyrians/Syrians in our study population with type 2 diabetes were no longer significant when adjusting for high triglycerides levels or the presence of hypertriglyceridemic waist.
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- 2012
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71. How persistent is short segment Barrett's esophagus in the general population? A report from the kalixanda study
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Ronkainen, J., Aro, P., Storskrubb, T., Vieth, M.W.R., Carlsson, R., Graffner, H., Talley, N.J., and Agreus, L.
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- 2001
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72. Transition from childhood to adulthood in coeliac disease: the Prague consensus report
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Knut E.A. Lundin, Joseph A. Murray, David S Sanders, Ivor D. Hill, Marilyn G Geller, M. Luisa Mearin, Sibylle Koletzko, Raanan Shamir, Tunde Koltai, Steffen Husby, Lars Agréus, Jonas F. Ludvigsson, Carolina Ciacci, A Pali S Hungin, Riccardo Troncone, Sheila E. Crowe, Peter H.R. Green, Norelle R. Reilly, Marjorie M. Walker, Ludvigsson, Jf, Agreus, L, Ciacci, C, Crowe, Se, Geller, Mg, Green, Ph, Hill, I, Hungin, Ap, Koletzko, S, Koltai, T, Lundin, Ke, Mearin, Ml, Murray, Ja, Reilly, N, Walker, Mm, Sanderd, D, Shamir, R, Troncone, Riccardo, and Husby, S.
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Adult ,medicine.medical_specialty ,Pediatrics ,Transition to Adult Care ,Consensus ,Adolescent ,CELIAC DISEASE ,Biopsy ,International Cooperation ,MEDLINE ,Disease ,Guidelines ,Coeliac disease ,03 medical and health sciences ,0302 clinical medicine ,030225 pediatrics ,Internal medicine ,Health care ,Medicine ,Humans ,Serologic Tests ,Young adult ,Pediatric gastroenterology ,GLUTEN ,medicine.diagnostic_test ,business.industry ,Gastroenterology ,Hepatology ,medicine.disease ,COELIAC DISEASE ,United States ,Europe ,030211 gastroenterology & hepatology ,Symptom Assessment ,business - Abstract
The process of transition from childhood to adulthood is characterised by physical, mental and psychosocial development. Data on the transition and transfer of care in adolescents/young adults with coeliac disease (CD) are scarce. In this paper, 17 physicians from 10 countries (Sweden, Italy, the USA, Germany, Norway, the Netherlands, Australia, Britain, Israel and Denmark) and two representatives from patient organisations (Association of European Coeliac Societies and the US Celiac Disease Foundation) examined the literature on transition from childhood to adulthood in CD. Medline (Ovid) and EMBASE were searched between 1900 and September 2015. Evidence in retrieved reports was evaluated using the Grading of Recommendation Assessment, Development and Evaluation method. The current consensus report aims to help healthcare personnel manage CD in the adolescent and young adult and provide optimal care and transition into adult healthcare for patients with this disease. In adolescence, patients with CD should gradually assume exclusive responsibility for their care, although parental support is still important. Dietary adherence and consequences of non-adherence should be discussed during transition. In most adolescents and young adults, routine small intestinal biopsy is not needed to reconfirm a childhood diagnosis of CD based on European Society for Pediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN) or North American Society for Pediatric Gastroenterology, Hepatology and Nutrition (NASPGHAN) criteria, but a biopsy may be considered where paediatric diagnostic criteria have not been fulfilled, such as, in a patient without biopsy at diagnosis, additional serology (endomysium antibody) has not been performed to confirm 10-fold positivity of tissue transglutaminase antibodies or when a no biopsy strategy has been adopted in an asymptomatic child.
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- 2016
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73. Perceptions and Practices of Primary Care Providers in Europe and the US in the Diagnosis and Treatment of Irritable Bowel Syndrome: A Multinational Survey.
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Heidelbaugh JJ, Hungin AP, Palsson OS, Anastasiou F, Agreus L, Fracasso P, Maaroos HI, Matic JR, Mendive JM, Seifert B, and Drossman DA
- Abstract
Background: The knowledge and proficiency of primary care practitioners (PCPs) in diagnosing and managing irritable bowel syndrome (IBS) remain generally low and variable internationally. This variability is partly due to a lack of familiarity with the Rome Foundation diagnostic criteria and treatment guidelines for this condition., Methods: We conducted an electronic survey of PCPs in the United States and nine European countries to assess their understanding of IBS pathophysiology; the use of Rome IV criteria in diagnosis, knowledge of and frequency in prescribing various recommended treatments; and the likelihood of referring patients with suspected IBS to subspecialists., Results: Most PCPs in the United States and Europe perceive IBS as a diagnosis of exclusion rather than a definitive diagnosis. They also believe IBS is underdiagnosed in primary care and challenging to diagnose confidently. The majority of PCPs consider diet as a crucial component of IBS management. Notably, US PCPs reported greater confidence than their European counterparts in recommending dietary interventions such as increased dietary fiber, a low FODMAP diet, and gluten restriction. Conversely, both groups exhibited moderate to high confidence in recommending over-the-counter treatments. European PCPs showed greater confidence in treating IBS with antispasmodics and secretagogues, while US PCPs expressed greater confidence in prescribing neuromodulators. Additionally, US PCPs were more likely to refer patients with suspected IBS to a gastroenterologist, whereas both US and European PCPs showed similar referral patterns to dietitians and referred very few patients to mental health providers. Both US and European PCPs reported that IBS is moderately to extremely difficult to treat effectively and emphasized the importance of a strong and longitudinal doctor-patient relationship in managing the condition., Conclusion: Despite the Rome Foundation recommendations and criteria to support a positive diagnosis of IBS, most PCPs still rely on exclusionary investigations such as endoscopy and a serologic workup, while a significant percentage suggest referring patients to gastroenterologists., (© 2024 The Author(s). Neurogastroenterology & Motility published by John Wiley & Sons Ltd.)
- Published
- 2024
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74. Diverticulosis is not associated with altered gut microbiota nor is it predictive of future diverticulitis: a population-based colonoscopy study.
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Alexandersson BT, Hugerth LW, Hedin C, Forsberg A, Talley NJ, Agreus L, Järbrink-Sehgal E, Engstrand L, Andreasson A, and Schmidt PT
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- Adult, Humans, Cohort Studies, RNA, Ribosomal, 16S genetics, Colonoscopy adverse effects, Diverticulitis, Colonic complications, Diverticulosis, Colonic complications, Gastrointestinal Microbiome genetics, Diverticulitis complications, Diverticulum complications, Diverticular Diseases complications
- Abstract
Background: The etiopathogenesis of diverticular disease is unknown., Objective: To compare the fecal and mucosa-associated microbiota between participants with and without diverticulosis and participants who later developed diverticulitis versus those that did not from a population-based study., Methods: The PopCol study, conducted in Stockholm, Sweden, invited a random sample of 3556 adults to participate, of which 745 underwent colonoscopy. Overall, 130 participants (17.5%) had diverticulosis. 16S rRNA gene sequencing was conducted on available sigmoid biopsy samples from 529 and fecal samples from 251 individuals. We identified individuals who subsequently developed acute diverticulitis up to 13 years after sample collection. In a case-control design matching for gender, age (+/-5 years), smoking and antibiotic exposure, we compared taxonomic composition, richness and diversity of the microbiota between participants with or without diverticulosis, and between participants who later developed acute diverticulitis versus those who did not., Results: No differences in microbiota richness or diversity were observed between participants with or without diverticulosis, nor for those who developed diverticulitis compared with those who did not. No bacterial taxa were significantly different between participants with diverticulosis compared with those without diverticulosis. Individuals who later developed acute diverticulitis (2.8%) had a higher abundance of genus Comamonas than those who did not ( p = .027)., Conclusions: In a population-based cohort study the only significant difference was that those who later develop diverticulitis had more abundance of genus Comamonas . The significance of Comamonas is unclear, suggesting a limited role for the gut microbiota in the etiopathogenesis of diverticular disease.
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- 2023
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75. Helicobacter pylori attachment-blocking antibodies protect against duodenal ulcer disease.
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Bugaytsova JA, Moonens K, Piddubnyi A, Schmidt A, Edlund JO, Lisiutin G, Brännström K, Chernov YA, Thorel K, Tkachenko I, Sharova O, Vikhrova I, Butsyk A, Shubin P, Chyzhma R, Johansson DX, Marcotte H, Sjöström R, Shevtsova A, Bylund G, Rakhimova L, Lundquist A, Berhilevych O, Kasianchuk V, Loboda A, Ivanytsia V, Hultenby K, Persson MAA, Gomes J, Matos R, Gartner F, Reis CA, Whitmire JM, Merrell DS, Pan-Hammarström Q, Landström M, Oscarson S, D'Elios MM, Agreus L, Ronkainen J, Aro P, Engstrand L, Graham DY, Kachkovska V, Mukhopadhyay A, Chaudhuri S, Karmakar BC, Paul S, Kravets O, Camorlinga M, Torres J, Berg DE, Moskalenko R, Haas R, Remaut H, Hammarström L, and Borén T
- Abstract
The majority of the world population carry the gastric pathogen Helicobacter pylori . Fortunately, most individuals experience only low-grade or no symptoms, but in many cases the chronic inflammatory infection develops into severe gastric disease, including duodenal ulcer disease and gastric cancer. Here we report on a protective mechanism where H. pylori attachment and accompanying chronic mucosal inflammation can be reduced by antibodies that are present in a vast majority of H. pylori carriers. These antibodies block binding of the H. pylori attachment protein BabA by mimicking BabA's binding to the ABO blood group glycans in the gastric mucosa. However, many individuals demonstrate low titers of BabA blocking antibodies, which is associated with an increased risk for duodenal ulceration, suggesting a role for these antibodies in preventing gastric disease., Competing Interests: DECLARATION OF INTERESTS The authors declare the following competing interests: T. Borén and L. Hammarström are founders of Helicure AB and, own the IP-rights to the anti-BabA ABbA-IgG1 (US patent US8025880B2) and own the IP-rights to the gastric cancer vaccine and diagnostics described in the two manuscripts by Bugaytsova et al., 2023 (Patent Application SE 2350423-6).
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- 2023
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76. Author Correction: Repeated out-of-Africa expansions of Helicobacter pylori driven by replacement of deleterious mutations.
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Thorpe HA, Tourrette E, Yahara K, Vale FF, Liu S, Oleastro M, Alarcon T, Perets TT, Latifi-Navid S, Yamaoka Y, Martinez-Gonzalez B, Karayiannis I, Karamitros T, Sgouras DN, Elamin W, Pascoe B, Sheppard SK, Ronkainen J, Aro P, Engstrand L, Agreus L, Suerbaum S, Thorell K, and Falush D
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- 2023
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77. Repeated out-of-Africa expansions of Helicobacter pylori driven by replacement of deleterious mutations.
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Thorpe HA, Tourrette E, Yahara K, Vale FF, Liu S, Oleastro M, Alarcon T, Perets TT, Latifi-Navid S, Yamaoka Y, Martinez-Gonzalez B, Karayiannis I, Karamitros T, Sgouras DN, Elamin W, Pascoe B, Sheppard SK, Ronkainen J, Aro P, Engstrand L, Agreus L, Suerbaum S, Thorell K, and Falush D
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- Humans, Black People genetics, Africa, Mutation, Helicobacter pylori genetics, Helicobacter Infections microbiology
- Abstract
Helicobacter pylori lives in the human stomach and has a population structure resembling that of its host. However, H. pylori from Europe and the Middle East trace substantially more ancestry from modern African populations than the humans that carry them. Here, we use a collection of Afro-Eurasian H. pylori genomes to show that this African ancestry is due to at least three distinct admixture events. H. pylori from East Asia, which have undergone little admixture, have accumulated many more non-synonymous mutations than African strains. European and Middle Eastern bacteria have elevated African ancestry at the sites of these mutations, implying selection to remove them during admixture. Simulations show that population fitness can be restored after bottlenecks by migration and subsequent admixture of small numbers of bacteria from non-bottlenecked populations. We conclude that recent spread of African DNA has been driven by deleterious mutations accumulated during the original out-of-Africa bottleneck., (© 2022. The Author(s).)
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- 2022
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78. GWAS of stool frequency provides insights into gastrointestinal motility and irritable bowel syndrome.
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Bonfiglio F, Liu X, Smillie C, Pandit A, Kurilshikov A, Bacigalupe R, Zheng T, Nim H, Garcia-Etxebarria K, Bujanda L, Andreasson A, Agreus L, Walter S, Abecasis G, Eijsbouts C, Jostins L, Parkes M, Hughes DA, Timpson N, Raes J, Franke A, Kennedy NA, Regev A, Zhernakova A, Simren M, Camilleri M, and D'Amato M
- Abstract
Gut dysmotility is associated with constipation, diarrhea, and functional gastrointestinal disorders like irritable bowel syndrome (IBS), although its molecular underpinnings are poorly characterized. We studied stool frequency (defined by the number of bowel movements per day, based on questionnaire data) as a proxy for gut motility in a GWAS meta-analysis including 167,875 individuals from UK Biobank and four smaller population-based cohorts. We identify 14 loci associated with stool frequency (p ≤ 5.0 × 10
-8 ). Gene set and pathway analyses detected enrichment for genes involved in neurotransmitter/neuropeptide signaling and preferentially expressed in enteric motor neurons controlling peristalsis. PheWAS identified pleiotropic associations with dysmotility syndromes and the response to their pharmacological treatment. The genetic architecture of stool frequency correlates with that of IBS, and UK Biobank participants from the top 1% of stool frequency polygenic score distribution were associated with 5× higher risk of IBS with diarrhea. These findings pave the way for the identification of actionable pathological mechanisms in IBS and the dysmotility syndromes., Competing Interests: A.R. is a founder and equity holder of Celsius Therapeutics, an equity holder in Immunitas Therapeutics, and, until August 31, 2020, was a scientific advisory board member of Syros Pharmaceuticals, Neogene Therapeutics, Asimov, and Thermo Fisher Scientific. A.R. is a member of the journal advisory board. From August 1, 2020, A.R. is an employee of Genentech., (© 2021 The Author(s).)- Published
- 2021
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79. Neutrophils, eosinophils, and intraepithelial lymphocytes in the squamous esophagus in subjects with and without gastroesophageal reflux symptoms.
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Zand Irani M, Talley NJ, Ronkainen J, Aro P, Andreasson A, Agreus L, Vieth M, Jones MP, and Walker MM
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- Adult, Aged, Female, Humans, Male, Middle Aged, Reference Values, Eosinophils cytology, Eosinophils pathology, Esophageal Mucosa cytology, Esophageal Mucosa pathology, Gastroesophageal Reflux pathology, Intraepithelial Lymphocytes cytology, Intraepithelial Lymphocytes pathology, Neutrophils cytology, Neutrophils pathology
- Abstract
Whilst intraepithelial lymphocytes (IELs) are considered normal within the distal esophageal mucosa, they have an increasingly recognised role in the pathogenesis of reflux esophagitis, and IEL quantification establishes the diagnosis of lymphocytic esophagitis. Knowledge regarding the upper limit of a normal IEL count in health is lacking. We studied 117 non-healthcare seeking adult volunteers from a random community sample (the Kalixanda study) with esophageal biopsies 2 cm above the gastroesophageal junction. Subjects were divided into four groups based on the presence or absence of gastro-esophageal reflux symptoms and/or esophagitis on endoscopy. Asymptomatic subjects with no endoscopic esophagitis were selected as controls, and the cell counts in this group were used to define the upper limit of normal of IELs, eosinophils and neutrophils. The entire sample was used to identify independent predictors of increased cellular counts by logistic regression analysis. None of the healthy controls had an IEL count of more than three per five high power fields (HPF), and therefore this was considered as the upper limit of normal; no controls had eosinophils or neutrophils in esophageal biopsies. Independent predictors of an elevated IEL count were spongiosis on histology (OR 11.17, 95% CI 3.32-37.58, P < 0.01) and current smoking (OR 4.84, 95% CI 1.13-2.71, P = 0.03). A receiver operating characteristics analysis concluded that a threshold of 3 IELs/5HPFs performs best in predicting reflux symptoms when a normal esophageal mucosa is visualized on endoscopy (sensitivity = 100.0%, specificity = 35.2%). The healthy esophageal mucosa does not contain more than three IELs per five HPF in the distal esophagus., (Copyright © 2021. Published by Elsevier Inc.)
- Published
- 2021
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80. [Significant over- and misuse of PPIs].
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Agreus L, Borgquist L, Tsoposidis A, Wallenius V, Kostic S, Lundell L, and Lindberg G
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- Anti-Inflammatory Agents, Non-Steroidal therapeutic use, Humans, Proton Pump Inhibitors adverse effects, Helicobacter Infections drug therapy, Peptic Ulcer chemically induced, Peptic Ulcer prevention & control
- Abstract
PPIs (Proton-pump inhibitors) offers the best treatment for acid related diseases. The predominant indications for PPI prescription are: GERD eradication of H. pylori-infection in combination with antibiotics H. pylori-negative peptic ulcer healing of and prophylaxis against NSAID/COXIB--induced gastroduodenal lesions acid hypersecretory states such as Zollinger-Ellisons syndrome. The market for PPIs continues to expand in most countries. A significant over- and misuse of PPIs prevails in hospital care as well as in general practice. The predominant reasons for and mechanisms behind the over- and misuse of PPIs are well recognised. The most important consequences of this overprescription of PPIs are increasing medical costs and risk for long-term adverse side effects. Continued education and dedicated information are key factors to guide physicians, medical personnel and patients to adopt to generally accepted principles for and balanced use of PPIs.
- Published
- 2021
81. Editorial: tobacco use in functional dyspepsia-another smoking gun? Authors' reply.
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Talley NJ, Walker MM, Agreus L, and Andreasson A
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- Humans, Tobacco Use, Dyspepsia epidemiology, Dyspepsia etiology, Gastritis, Irritable Bowel Syndrome
- Published
- 2021
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82. Large-scale association analyses identify host factors influencing human gut microbiome composition.
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Kurilshikov A, Medina-Gomez C, Bacigalupe R, Radjabzadeh D, Wang J, Demirkan A, Le Roy CI, Raygoza Garay JA, Finnicum CT, Liu X, Zhernakova DV, Bonder MJ, Hansen TH, Frost F, Rühlemann MC, Turpin W, Moon JY, Kim HN, Lüll K, Barkan E, Shah SA, Fornage M, Szopinska-Tokov J, Wallen ZD, Borisevich D, Agreus L, Andreasson A, Bang C, Bedrani L, Bell JT, Bisgaard H, Boehnke M, Boomsma DI, Burk RD, Claringbould A, Croitoru K, Davies GE, van Duijn CM, Duijts L, Falony G, Fu J, van der Graaf A, Hansen T, Homuth G, Hughes DA, Ijzerman RG, Jackson MA, Jaddoe VWV, Joossens M, Jørgensen T, Keszthelyi D, Knight R, Laakso M, Laudes M, Launer LJ, Lieb W, Lusis AJ, Masclee AAM, Moll HA, Mujagic Z, Qibin Q, Rothschild D, Shin H, Sørensen SJ, Steves CJ, Thorsen J, Timpson NJ, Tito RY, Vieira-Silva S, Völker U, Völzke H, Võsa U, Wade KH, Walter S, Watanabe K, Weiss S, Weiss FU, Weissbrod O, Westra HJ, Willemsen G, Payami H, Jonkers DMAE, Arias Vasquez A, de Geus EJC, Meyer KA, Stokholm J, Segal E, Org E, Wijmenga C, Kim HL, Kaplan RC, Spector TD, Uitterlinden AG, Rivadeneira F, Franke A, Lerch MM, Franke L, Sanna S, D'Amato M, Pedersen O, Paterson AD, Kraaij R, Raes J, and Zhernakova A
- Subjects
- Adolescent, Adult, Bifidobacterium genetics, Child, Child, Preschool, Cohort Studies, Female, Gastrointestinal Microbiome genetics, Genome-Wide Association Study, Humans, Lactase genetics, Linkage Disequilibrium, Male, Mendelian Randomization Analysis, Metabolism genetics, RNA, Ribosomal, 16S, Gastrointestinal Microbiome physiology, Genetic Variation, Quantitative Trait Loci
- Abstract
To study the effect of host genetics on gut microbiome composition, the MiBioGen consortium curated and analyzed genome-wide genotypes and 16S fecal microbiome data from 18,340 individuals (24 cohorts). Microbial composition showed high variability across cohorts: only 9 of 410 genera were detected in more than 95% of samples. A genome-wide association study of host genetic variation regarding microbial taxa identified 31 loci affecting the microbiome at a genome-wide significant (P < 5 × 10
-8 ) threshold. One locus, the lactase (LCT) gene locus, reached study-wide significance (genome-wide association study signal: P = 1.28 × 10-20 ), and it showed an age-dependent association with Bifidobacterium abundance. Other associations were suggestive (1.95 × 10-10 < P < 5 × 10-8 ) but enriched for taxa showing high heritability and for genes expressed in the intestine and brain. A phenome-wide association study and Mendelian randomization identified enrichment of microbiome trait loci in the metabolic, nutrition and environment domains and suggested the microbiome might have causal effects in ulcerative colitis and rheumatoid arthritis.- Published
- 2021
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83. Gastric Microbiota in a Low-Helicobacter pylori Prevalence General Population and Their Associations With Gastric Lesions.
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Ndegwa N, Ploner A, Andersson AF, Zagai U, Andreasson A, Vieth M, Talley NJ, Agreus L, and Ye W
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- Adult, Aged, Biopsy, Chronic Disease, DNA, Bacterial isolation & purification, Dysbiosis diagnosis, Dysbiosis epidemiology, Dysbiosis pathology, Female, Follow-Up Studies, Gastric Mucosa diagnostic imaging, Gastric Mucosa microbiology, Gastritis diagnosis, Gastritis epidemiology, Gastritis pathology, Gastroscopy, Helicobacter Infections diagnosis, Helicobacter Infections microbiology, Helicobacter Infections pathology, Helicobacter pylori genetics, Helicobacter pylori isolation & purification, Humans, Longitudinal Studies, Male, Middle Aged, Prevalence, RNA, Ribosomal, 16S genetics, Sweden epidemiology, Dysbiosis microbiology, Gastric Mucosa pathology, Gastritis microbiology, Gastrointestinal Microbiome, Helicobacter Infections epidemiology
- Abstract
Introduction: Non-Helicobacter pylori microbiota might account for some cases with unexplained chronic gastritis that may in a minority eventually progress to gastric cancer through the Correa cascade. We characterized gastric microbiota by describing the normal stomach, compared it with early precancerous lesions and other disease states, and assessed whether H. pylori status affects bacterial diversity., Methods: In a population-based study of those with and without gastrointestinal symptoms, cytology brush samples were collected during endoscopy from 316 individuals. Mucosal status was classified as normal mucosa (171), nonatrophic H. pylori gastritis (33), atrophic gastritis (12), or antral chemical gastritis (61). The 16S rRNA gene sequencing and analysis were performed to characterize the microbiota., Results: Microbiota in atrophic gastritis and nonatrophic H. pylori gastritis stomachs were dysbiotic and differed from those in the normal stomach (P = 0.001). The normal stomach had the highest microbial diversity, followed by antral chemical gastritis. The atrophic gastritis and chronic H. pylori gastritis groups had the lowest diversity, a difference that was statistically significant (P = 0.01). Besides H. pylori, non-H. pylori bacteria accounted for group differences. Microbial network analysis showed that the normal group network was most highly connected, whereas the H. pylori gastritis group had the lowest connection. We found an increasing positive co-occurrence of oral bacteria in the stomach because samples deviated from the normal network, some of which were pathogens. The H. pylori-negative group had the highest microbial diversity (Shannon index) compared with the H. pylori-positive group (P = 0.001)., Discussion: In this low-H. pylori prevalence general population, the gastric mucosal microbiota of the normal stomach differed significantly from those with nonatrophic or atrophic gastritis. There was an increasing abundance of pathogenic bacteria from the normal state to early precancerous states.
- Published
- 2020
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84. No distinct microbiome signature of irritable bowel syndrome found in a Swedish random population.
- Author
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Hugerth LW, Andreasson A, Talley NJ, Forsberg AM, Kjellström L, Schmidt PT, Agreus L, and Engstrand L
- Subjects
- Case-Control Studies, Colonoscopy, Feces microbiology, Gastrointestinal Microbiome genetics, Humans, Intestinal Mucosa microbiology, Male, Middle Aged, RNA, Ribosomal, 16S genetics, Sweden, Gastrointestinal Microbiome physiology, Irritable Bowel Syndrome microbiology
- Abstract
Objective: The ethiopathogenesis of irritable bowel syndrome (IBS) is unknown. While a link to the gut microbiome is postulated, the heterogeneity of the healthy gut makes it difficult to draw definitive conclusions. We aimed to describe the faecal and mucosa-associated microbiome (MAM) and health correlates on a community cohort of healthy and IBS individuals with no colonoscopic findings., Design: The PopCol study recruited a random sample of 3556 adults; 745 underwent colonoscopy. IBS was defined by Rome IV criteria and organic disease excluded. 16S rRNA gene sequencing was conducted on sigmoid biopsy samples from 376 representative individuals (63 IBS cases) and faecal samples from 185 individuals (32 IBS cases)., Results: While sigmoid MAM was dominated by Lachnospiraceae, faeces presented a higher relative abundance of Ruminococcaceae. Microbial richness in MAM was linearly correlated to that in faeces from the same individual (R²=0.255, p<3E-11) as was diversity (R²=0.06, p=0.0022). MAM diversity decreased with increasing body mass index (BMI; Pearson's r=-0.1, p=0.08) and poorer self-rated health (r=-0.15, p=0.007), but no other health correlates. Faecal microbiome diversity was correlated to stool consistency (r=-0.16, p=0.043). Several taxonomic groups were correlated to age, BMI, depression and self-reported health, including Coprococcus catus associated with lower levels of depression (r=-0.003, p=0.00017). The degree of heterogeneity observed between IBS patients is higher than that observed between healthy individuals., Conclusions: No distinct microbial signature was observed in IBS. Individuals presenting with low self-rated health or high BMI have lower gut microbiome richness., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2020. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
- Published
- 2020
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85. Z-line alterations and gastroesophageal reflux: an endoscopic population-based prospective cohort study.
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Wallner B, Björ O, Andreasson A, Vieth M, Schmidt PT, Hellström PM, Forsberg A, Talley NJ, and Agreus L
- Subjects
- Adult, Aged, Barrett Esophagus complications, Barrett Esophagus epidemiology, Female, Gastroesophageal Reflux complications, Humans, Logistic Models, Male, Middle Aged, Prospective Studies, Risk Factors, Surveys and Questionnaires, Sweden epidemiology, Barrett Esophagus diagnosis, Esophagoscopy methods, Esophagus pathology, Gastroesophageal Reflux diagnosis
- Abstract
Background and study aims: Barrett's esophagus is a premalignant condition in the distal esophagus associated with esophageal adenocarcinoma. Since gastroesophageal reflux is known to be of etiological importance in both Barrett's esophagus and esophageal adenocarcinoma, we aimed to study which endoscopic alterations at the Z-line can be attributed to a previous history of reflux symptoms. Patients and methods: From 1988, a population cohort in Sweden has been prospectively studied regarding gastrointestinal symptoms, using a validated questionnaire. In 2012, the population was invited to undergo a gastroscopy and participate in the present study. In order to determine which endoscopic alterations that can be attributed to a previous history of gastroesophageal reflux, three different endoscopic definitions of columnar-lined esophagus (CLE) were used: (1) ZAP I, An irregular Z-line with a suspicion of tongue-like protrusions; (2) ZAP II/III, Distinct, obvious tongues of metaplastic columnar epithelium; (3) CLE ≥1 cm, The Prague C/M-classification with a minimum length of 1 cm. Results: A total of 165 community subjects were included in the study. Of these, 40 had CLE ≥ 1 cm, 99 had ZAP I, and 26 had ZAP II/III. ZAP II/III was associated with an over threefold risk of previous GER symptoms (OR: 3.60, CI: 1.49-8.70). No association was found between gastroesophageal reflux and ZAP I (OR: 2.06, CI: 0.85-5.00), or CLE ≥1 cm (OR: 1.64, CI: 0.77-3.49). Conclusions: In a general community, the only endoscopic alteration to the Z-line definitely linked to longstanding GER symptoms was the presence of obvious tongues of metaplastic columnar epithelium (ZAP II/III).
- Published
- 2019
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86. Response to Tursi.
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Jarbrink-Sehgal ME, Rassam L, Jasim A, Walker M, Talley NJ, Agreus L, Andreasson A, and Thelin Schmidt P
- Subjects
- Colon, Humans, Inflammation, Colonoscopy, Diverticulum
- Published
- 2019
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87. Gastrointestinal recall questionnaires compare poorly with prospective patient diaries for gastrointestinal symptoms: data from population and primary health centre samples.
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Jones MP, Walter S, Faresjö Å, Grodzinsky E, Kjellström L, Viktorsson L, Talley NJ, Agreus L, and Andreasson A
- Subjects
- Abdominal Pain etiology, Adult, Defecation, Female, Health Status, Humans, Irritable Bowel Syndrome complications, Irritable Bowel Syndrome physiopathology, Male, Middle Aged, Pain Measurement, Predictive Value of Tests, Prospective Studies, Reproducibility of Results, Retrospective Studies, Self Report, Time Factors, Diaries as Topic, Irritable Bowel Syndrome diagnosis, Mental Recall, Primary Health Care, Surveys and Questionnaires
- Abstract
Background: Clinical understanding of gastrointestinal symptoms is commonly based on patient reports of symptom experience. For diagnosis and treatment choices to be appropriate, symptom reports need to be accurate. We examined the agreement between questionnaire recall and prospective diary enumeration of symptoms relevant to the irritable bowel syndrome., Patients and Methods: Data are reported from a randomly selected general population sample (n=238) and also a primary healthcare centre (PHC) sample (n=503, 10 PHCs). All the patients completed the questionnaires, which included Rome III-qualifying irritable bowel syndrome items and a stool and symptom diary over either 7 or 14 days. Agreement between retrospective questionnaire reports and prospective diaries was evaluated., Results: Concordance between questionnaires and diaries was highest for the simple construct of the occurrence of abdominal pain, although after adjusting for possible chance, agreement was only moderate in the general population sample. More complex constructs, such as pain relieved by defecation, yielded poorer concordance. In general, concordance was stronger among PHC respondents than in the general population sample., Conclusion: Concordance between questionnaires and diaries was generally poor and related to the complexity of the symptom construct and the type of respondent. The information used to classify individuals based on patient self-report may be unreliable, and therefore, more effort is needed to develop data collection instruments.
- Published
- 2019
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88. Acute upper gastrointestinal bleeding.
- Author
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Sverdén E, Markar SR, Agreus L, and Lagergren J
- Subjects
- Acute Disease, Gastrointestinal Hemorrhage therapy, Humans, Practice Guidelines as Topic, Gastrointestinal Hemorrhage diagnosis
- Abstract
Competing Interests: Competing interests: We have read and understood the BMJ policy on declaration of interests and declare the following interests: none.
- Published
- 2018
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89. Female-Specific Association Between Variants on Chromosome 9 and Self-Reported Diagnosis of Irritable Bowel Syndrome.
- Author
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Bonfiglio F, Zheng T, Garcia-Etxebarria K, Hadizadeh F, Bujanda L, Bresso F, Agreus L, Andreasson A, Dlugosz A, Lindberg G, Schmidt PT, Karling P, Ohlsson B, Simren M, Walter S, Nardone G, Cuomo R, Usai-Satta P, Galeazzi F, Neri M, Portincasa P, Bellini M, Barbara G, Latiano A, Hübenthal M, Thijs V, Netea MG, Jonkers D, Chang L, Mayer EA, Wouters MM, Boeckxstaens G, Camilleri M, Franke A, Zhernakova A, and D'Amato M
- Subjects
- Adult, Aged, Constipation etiology, Constipation physiopathology, Europe, Female, Genetic Predisposition to Disease, Genetic Variation, Genome-Wide Association Study, Genotype, Humans, Irritable Bowel Syndrome complications, Irritable Bowel Syndrome physiopathology, Male, Middle Aged, Polymorphism, Single Nucleotide, Self Report, Sex Factors, Sweden, United States, Chromosomes, Human, Pair 9 genetics, Constipation genetics, Irritable Bowel Syndrome genetics, Menarche genetics
- Abstract
Background & Aims: Genetic factors are believed to affect risk for irritable bowel syndrome (IBS), but there have been no sufficiently powered and adequately sized studies. To identify DNA variants associated with IBS risk, we performed a genome-wide association study (GWAS) of the large UK Biobank population-based cohort, which includes genotype and health data from 500,000 participants., Methods: We studied 7,287,191 high-quality single nucleotide polymorphisms in individuals who self-reported a doctor's diagnosis of IBS (cases; n = 9576) compared to the remainder of the cohort (controls; n = 336,499) (mean age of study subjects, 40-69 years). Genome-wide significant findings were further investigated in 2045 patients with IBS from tertiary centers and 7955 population controls from Europe and the United States, and a small general population sample from Sweden (n = 249). Functional annotation of GWAS results was carried out by integrating data from multiple biorepositories to obtain biological insights from the observed associations., Results: We identified a genome-wide significant association on chromosome 9q31.2 (single nucleotide polymorphism rs10512344; P = 3.57 × 10
-8 ) in a region previously linked to age at menarche, and 13 additional loci of suggestive significance (P < 5.0×10-6 ). Sex-stratified analyses revealed that the variants at 9q31.2 affect risk of IBS in women only (P = 4.29 × 10-10 in UK Biobank) and also associate with constipation-predominant IBS in women (P = .015 in the tertiary cohort) and harder stools in women (P = .0012 in the population-based sample). Functional annotation of the 9q31.2 locus identified 8 candidate genes, including the elongator complex protein 1 gene (ELP1 or IKBKAP), which is mutated in patients with familial dysautonomia., Conclusions: In a sufficiently powered GWAS of IBS, we associated variants at the locus 9q31.2 with risk of IBS in women. This observation may provide additional rationale for investigating the role of sex hormones and autonomic dysfunction in IBS., (Copyright © 2018 AGA Institute. Published by Elsevier Inc. All rights reserved.)- Published
- 2018
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90. Identifying clinically relevant sliding hiatal hernias: a population-based endoscopy study.
- Author
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Wallner B, Björ O, Andreasson A, Hellström PM, Forsberg AM, Talley NJ, and Agreus L
- Subjects
- Adult, Aged, Endoscopy, Digestive System, Female, Gastroesophageal Reflux complications, Heartburn etiology, Hernia, Hiatal complications, Humans, Hydrogen-Ion Concentration, Logistic Models, Male, Manometry, Middle Aged, Monitoring, Physiologic, Multivariate Analysis, Sweden, Young Adult, Esophagogastric Junction physiopathology, Gastroesophageal Reflux physiopathology, Hernia, Hiatal diagnosis, Hernia, Hiatal physiopathology
- Abstract
Objectives: The clinical relevance of small to moderate sliding hiatal hernias is controversial. The aims of the present study were to (1) investigate which symptoms are associated with sliding hiatal hernias and (2) define the length of a sliding hiatal hernia at which gastrointestinal symptoms occur., Methods: A study population representative of the general Swedish population answered a questionnaire regarding gastrointestinal symptoms and was investigated with an upper endoscopy. The length of any sliding hiatal hernia was measured., Results: Only reflux-related symptoms were associated with length of the hiatal hernia (acid regurgitation OR 1.46, CI 1.19-1.79, heartburn OR 1.27, CI 1.05-1.54), and the association did not become significant until an axial hiatal hernia length of 2 cm., Conclusions: Only reflux symptoms could be attributed to sliding hiatal hernias. Hiatal hernias less than 2 cm should be considered clinically insignificant.
- Published
- 2018
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91. Faecal microbiota composition associates with abdominal pain in the general population.
- Author
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Hadizadeh F, Bonfiglio F, Belheouane M, Vallier M, Sauer S, Bang C, Bujanda L, Andreasson A, Agreus L, Engstrand L, Talley NJ, Rafter J, Baines JF, Walter S, Franke A, and D'Amato M
- Subjects
- Abdominal Pain, Humans, Feces, Microbiota
- Abstract
Competing Interests: Competing interests: None declared.
- Published
- 2018
- Full Text
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92. ABC om - IBS – irritabel tarm.
- Author
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Lagerlöf E, Agreus L, Simrén M, and Törnblom H
- Subjects
- Algorithms, Feces, Humans, Irritable Bowel Syndrome complications, Irritable Bowel Syndrome diagnosis, Irritable Bowel Syndrome psychology, Irritable Bowel Syndrome therapy
- Published
- 2018
93. Functional variants in the sucrase-isomaltase gene associate with increased risk of irritable bowel syndrome.
- Author
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Henström M, Diekmann L, Bonfiglio F, Hadizadeh F, Kuech EM, von Köckritz-Blickwede M, Thingholm LB, Zheng T, Assadi G, Dierks C, Heine M, Philipp U, Distl O, Money ME, Belheouane M, Heinsen FA, Rafter J, Nardone G, Cuomo R, Usai-Satta P, Galeazzi F, Neri M, Walter S, Simrén M, Karling P, Ohlsson B, Schmidt PT, Lindberg G, Dlugosz A, Agreus L, Andreasson A, Mayer E, Baines JF, Engstrand L, Portincasa P, Bellini M, Stanghellini V, Barbara G, Chang L, Camilleri M, Franke A, Naim HY, and D'Amato M
- Subjects
- Adult, Animals, Carbohydrate Metabolism, Inborn Errors genetics, Case-Control Studies, Cell Line, Cell Membrane enzymology, DNA Mutational Analysis, Defecation genetics, Diarrhea etiology, Exons, Feces microbiology, Female, Gene Dosage, Genotype, Haplorhini, Humans, Irritable Bowel Syndrome complications, Male, Middle Aged, Phenotype, Polymorphism, Single Nucleotide, Risk Factors, Sucrase-Isomaltase Complex deficiency, Transfection, Irritable Bowel Syndrome enzymology, Irritable Bowel Syndrome genetics, Sucrase-Isomaltase Complex genetics, Sucrase-Isomaltase Complex metabolism
- Abstract
Objective: IBS is a common gut disorder of uncertain pathogenesis. Among other factors, genetics and certain foods are proposed to contribute. Congenital sucrase-isomaltase deficiency (CSID) is a rare genetic form of disaccharide malabsorption characterised by diarrhoea, abdominal pain and bloating, which are features common to IBS. We tested sucrase-isomaltase ( SI ) gene variants for their potential relevance in IBS., Design: We sequenced SI exons in seven familial cases, and screened four CSID mutations (p.Val557Gly, p.Gly1073Asp, p.Arg1124Ter and p.Phe1745Cys) and a common SI coding polymorphism (p.Val15Phe) in a multicentre cohort of 1887 cases and controls. We studied the effect of the 15Val to 15Phe substitution on SI function in vitro. We analysed p.Val15Phe genotype in relation to IBS status, stool frequency and faecal microbiota composition in 250 individuals from the general population., Results: CSID mutations were more common in patients than asymptomatic controls (p=0.074; OR=1.84) and Exome Aggregation Consortium reference sequenced individuals (p=0.020; OR=1.57). 15Phe was detected in 6/7 sequenced familial cases, and increased IBS risk in case-control and population-based cohorts, with best evidence for diarrhoea phenotypes (combined p=0.00012; OR=1.36). In the population-based sample, 15Phe allele dosage correlated with stool frequency (p=0.026) and Parabacteroides faecal microbiota abundance (p=0.0024). The SI protein with 15Phe exhibited 35% reduced enzymatic activity in vitro compared with 15Val (p<0.05)., Conclusions: SI gene variants coding for disaccharidases with defective or reduced enzymatic activity predispose to IBS. This may help the identification of individuals at risk, and contribute to personalising treatment options in a subset of patients., Competing Interests: Competing interests: The work was partially financed by an unrestricted grant from Medical Need Europe AB to MDA. MDA and HYN have received unrestricted research grants and lecturing honoraria from QOL Medical, and LC has served on a scientific advisory board for QOL Medical., (Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.)
- Published
- 2018
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94. miR-16 and miR-103 impact 5-HT 4 receptor signalling and correlate with symptom profile in irritable bowel syndrome.
- Author
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Wohlfarth C, Schmitteckert S, Härtle JD, Houghton LA, Dweep H, Fortea M, Assadi G, Braun A, Mederer T, Pöhner S, Becker PP, Fischer C, Granzow M, Mönnikes H, Mayer EA, Sayuk G, Boeckxstaens G, Wouters MM, Simrén M, Lindberg G, Ohlsson B, Schmidt PT, Dlugosz A, Agreus L, Andreasson A, D'Amato M, Burwinkel B, Bermejo JL, Röth R, Lasitschka F, Vicario M, Metzger M, Santos J, Rappold GA, Martinez C, and Niesler B
- Subjects
- Diarrhea, Down-Regulation, Gene Expression Regulation, Genetic Association Studies, Humans, Irritable Bowel Syndrome metabolism, Jejunum pathology, Mutation genetics, Phenotype, Polymorphism, Single Nucleotide, Protein Binding genetics, Quality of Life, Receptors, Serotonin, 5-HT4 metabolism, Signal Transduction, Work Performance, Irritable Bowel Syndrome genetics, Jejunum metabolism, MicroRNAs genetics, Receptors, Serotonin, 5-HT4 genetics
- Abstract
Irritable bowel syndrome (IBS) is a gut-brain disorder involving alterations in intestinal sensitivity and motility. Serotonin 5-HT
4 receptors are promising candidates in IBS pathophysiology since they regulate gut motor function and stool consistency, and targeted 5-HT4 R selective drug intervention has been proven beneficial in subgroups of patients. We identified a single nucleotide polymorphism (SNP) (rs201253747) c.*61 T > C within the 5-HT4 receptor gene HTR4 to be predominantly present in diarrhoea-IBS patients (IBS-D). It affects a binding site for the miR-16 family and miR-103/miR-107 within the isoforms HTR4b/i and putatively impairs HTR4 expression. Subsequent miRNA-profiling revealed downregulation of miR-16 and miR-103 in the jejunum of IBS-D patients correlating with symptoms. In vitro assays confirmed expression regulation via three 3'UTR binding sites. The novel isoform HTR4b_2 lacking two of the three miRNA binding sites escapes miR-16/103/107 regulation in SNP carriers. We provide the first evidence that HTR4 expression is fine-tuned by miRNAs, and that this regulation is impaired either by the SNP c.*61 T > C or by diminished levels of miR-16 and miR-103 suggesting that HTR4 might be involved in the development of IBS-D.- Published
- 2017
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95. TRPM8 polymorphisms associated with increased risk of IBS-C and IBS-M.
- Author
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Henström M, Hadizadeh F, Beyder A, Bonfiglio F, Zheng T, Assadi G, Rafter J, Bujanda L, Agreus L, Andreasson A, Dlugosz A, Lindberg G, Schmidt PT, Karling P, Ohlsson B, Talley NJ, Simren M, Walter S, Wouters M, Farrugia G, and D'Amato M
- Subjects
- Diarrhea, Humans, Polymorphism, Genetic, Risk, Constipation, Irritable Bowel Syndrome
- Abstract
Competing Interests: Competing interests: None.
- Published
- 2017
- Full Text
- View/download PDF
96. A GWAS meta-analysis suggests roles for xenobiotic metabolism and ion channel activity in the biology of stool frequency.
- Author
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Jankipersadsing SA, Hadizadeh F, Bonder MJ, Tigchelaar EF, Deelen P, Fu J, Andreasson A, Agreus L, Walter S, Wijmenga C, Hysi P, D'Amato M, and Zhernakova A
- Subjects
- Ion Channels, Cytochrome P-450 Enzyme System, Inactivation, Metabolic
- Published
- 2017
- Full Text
- View/download PDF
97. Dense genotyping of immune-related loci identifies HLA variants associated with increased risk of collagenous colitis.
- Author
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Westerlind H, Mellander MR, Bresso F, Munch A, Bonfiglio F, Assadi G, Rafter J, Hübenthal M, Lieb W, Källberg H, Brynedal B, Padyukov L, Halfvarson J, Törkvist L, Bjork J, Andreasson A, Agreus L, Almer S, Miehlke S, Madisch A, Ohlsson B, Löfberg R, Hultcrantz R, Franke A, and D'Amato M
- Subjects
- Aged, Alleles, Case-Control Studies, Chromosomes, Human, Pair 6, Female, Genotyping Techniques, Haplotypes, Humans, Male, Middle Aged, Polymorphism, Single Nucleotide, Risk Factors, Colitis, Collagenous genetics, Colitis, Collagenous immunology, Genetic Loci, Genetic Predisposition to Disease, HLA Antigens genetics, HLA Antigens immunology
- Abstract
Objective: Collagenous colitis (CC) is a major cause of chronic non-bloody diarrhoea, particularly in the elderly female population. The aetiology of CC is unknown, and still poor is the understanding of its pathogenesis. This possibly involves dysregulated inflammation and immune-mediated reactions in genetically predisposed individuals, but the contribution of genetic factors to CC is underinvestigated. We systematically tested immune-related genes known to impact the risk of several autoimmune diseases for their potential CC-predisposing role., Design: Three independent cohorts of histologically confirmed CC cases (N=314) and controls (N=4299) from Sweden and Germany were included in a 2-step association analysis. Immunochip and targeted single nucleotide polymorphism (SNP) genotype data were produced, respectively, for discovery and replication purposes. Classical human leucocyte antigen (HLA) variants at 2-digit and 4-digit resolution were obtained via imputation from single marker genotypes. SNPs and HLA variants passing quality control filters were tested for association with CC with logistic regression adjusting for age, sex and country of origin., Results: Forty-two markers gave rise to genome-wide significant association signals, all contained within the HLA region on chromosome 6 (best p=4.2×10
-10 for SNP rs4143332). Among the HLA variants, most pronounced risk effects were observed for 8.1 haplotype alleles including DQ2.5, which was targeted and confirmed in the replication data set (p=2.3×10-11 ; OR=2.06; 95% CI (1.67 to 2.55) in the combined analysis)., Conclusions: HLA genotype associates with CC, thus implicating HLA-related immune mechanisms in its pathogenesis., (Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.)- Published
- 2017
- Full Text
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98. Stool frequency is associated with gut microbiota composition.
- Author
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Hadizadeh F, Walter S, Belheouane M, Bonfiglio F, Heinsen FA, Andreasson A, Agreus L, Engstrand L, Baines JF, Rafter J, Franke A, and D'Amato M
- Subjects
- Gastrointestinal Transit, Humans, Feces, Gastrointestinal Microbiome
- Published
- 2017
- Full Text
- View/download PDF
99. [New Swedish guidelines for the management of dyspepsia, H pylori, and duodenal and gastric ulcers].
- Author
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Agreus L and Simrén M
- Subjects
- Critical Pathways, Helicobacter pylori isolation & purification, Humans, Middle Aged, Sweden, Duodenal Ulcer diagnosis, Duodenal Ulcer therapy, Dyspepsia diagnosis, Dyspepsia therapy, Helicobacter Infections diagnosis, Helicobacter Infections therapy, Practice Guidelines as Topic, Stomach Ulcer diagnosis, Stomach Ulcer therapy
- Abstract
New Swedish guidelines for the management of dyspepsia, H pylori, and duodenal and gastric ulcers The management of dyspepsia in Sweden differs between national county councils, and is often not in line with international recommendations. The Swedish Society of Gastroenterology has together with the Swedish College of General Practice (SFAM) developed new national guidelines for the management of uninvestigated dyspepsia, functional dyspepsia, Helicobacter pylori, and uncomplicated duodenal and gastric ulcers. The new Swedish guidelines emphasize that patients under 50 years of age with new onset of uninvestigated dyspepsia without any alarm symptoms or signs can be managed with the »Test and treat« strategy. Moreover, patients with a known H pylori infection and bothersome symptoms of functional dyspepsia shall be offered eradication therapy. The recommendations for triple therapy for H pylori eradication take into account the estimated average national antibiotic resistance patterns, environmental factors and potential effects on gut microbiota.
- Published
- 2017
100. Transition from childhood to adulthood in coeliac disease: the Prague consensus report.
- Author
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Ludvigsson JF, Agreus L, Ciacci C, Crowe SE, Geller MG, Green PH, Hill I, Hungin AP, Koletzko S, Koltai T, Lundin KE, Mearin ML, Murray JA, Reilly N, Walker MM, Sanders DS, Shamir R, Troncone R, and Husby S
- Subjects
- Adolescent, Adult, Biopsy methods, Consensus, Europe, Humans, International Cooperation, Serologic Tests methods, Symptom Assessment methods, United States, Celiac Disease diagnosis, Celiac Disease therapy, Transition to Adult Care organization & administration
- Abstract
The process of transition from childhood to adulthood is characterised by physical, mental and psychosocial development. Data on the transition and transfer of care in adolescents/young adults with coeliac disease (CD) are scarce. In this paper, 17 physicians from 10 countries (Sweden, Italy, the USA, Germany, Norway, the Netherlands, Australia, Britain, Israel and Denmark) and two representatives from patient organisations (Association of European Coeliac Societies and the US Celiac Disease Foundation) examined the literature on transition from childhood to adulthood in CD. Medline (Ovid) and EMBASE were searched between 1900 and September 2015. Evidence in retrieved reports was evaluated using the Grading of Recommendation Assessment, Development and Evaluation method. The current consensus report aims to help healthcare personnel manage CD in the adolescent and young adult and provide optimal care and transition into adult healthcare for patients with this disease. In adolescence, patients with CD should gradually assume exclusive responsibility for their care, although parental support is still important. Dietary adherence and consequences of non-adherence should be discussed during transition. In most adolescents and young adults, routine small intestinal biopsy is not needed to reconfirm a childhood diagnosis of CD based on European Society for Pediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN) or North American Society for Pediatric Gastroenterology, Hepatology and Nutrition (NASPGHAN) criteria, but a biopsy may be considered where paediatric diagnostic criteria have not been fulfilled, such as, in a patient without biopsy at diagnosis, additional serology (endomysium antibody) has not been performed to confirm 10-fold positivity of tissue transglutaminase antibodies or when a no biopsy strategy has been adopted in an asymptomatic child., (Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/)
- Published
- 2016
- Full Text
- View/download PDF
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