Dr. Maria O'Sullivan

Dr. Maria O'Sullivan

Associate Professor in Human Nutrition, Clinical Medicine

3531896 4039

Publications and Further Research Outputs

  • Tara Raftery, Adrian Martineau, Claire Greiller, Subrata Ghosh, Deirdre McNamara, Kathleen Bennett, Jon Meddings, Maria O'Sullivan, Effects of vitamin D supplementation on intestinal permeability, cathelicidin and disease markers in Crohn's disease: Results from a randomised double-blind placebo-controlled study. , United European Gastroenterology Journal, 3, (3), 2015, p294 - 302Journal Article, 2015, URL , TARA - Full Text
  • Raftery T, Merrick M, Healy M, Mahmud N, O'Morain C, Smith S, McNamara D, O'Sullivan M., Vitamin D Status Is Associated with Intestinal Inflammation as Measured by Fecal Calprotectin in Crohn's Disease in Clinical Remission., Digestive Diseases and Sciences, 60, (8), 2015, p2427 - 2435Journal Article, 2015, DOI
  • Maria O'Sullivan, Does vitamin D protect the gut mucosal barrier? Mechanistic insights from experimental colitis., Dg Dis Sci, 60, (7), 2015, p1871 - 1872Journal Article, 2015
  • M O'Sullivan, C O'Morain., Nutrition in Inflammatory Bowel Disease, Current Treatment Options in Gastroenterology , 7, (3), 2004, p191 - 198Journal Article, 2004
  • ID Arnott, ER Nimmo, HE Drummond, J Fennell, BR Smith, E MacKinlay, J Morecroft, N Anderson, D Kelleher, M O'Sullivan, R McManus, J Satsangi, NOD2/CARD15, TLR4 and CD14 mutations in Scottish and Irish Crohn's disease patients: Evidence for genetic heterogeneity within Europe? , Genes and Immunity, 5, 2004, p417 - 425Journal Article, 2004
  • M O'Sullivan, C O'Morain, Food Intolerance: Dietary Treatments in Functional Bowel Disorders, Current Treatment Options in Gastroenterology , 6, (4), 2003, p339 - 345Journal Article, 2003
  • M O'Sullivan, N Clayton, NP Breslin, I Harman, C Bountra, A McLaren, CA O'Morain, Increased mast cells in the irritable bowel syndrome, Neurogastroenterology & Motility, 12, (5), 2000, p449 - 457Journal Article, 2000
  • M O'Sullivan, CA O'Morain, Bacterial supplementation in the irritable bowel syndrome - a randomised double blind placebo-controlled crossover study, Digestive & Liver Diseases , 32, 2000, p294 - 301Journal Article, 2000
  • Maria O'Sullivan, Is vitamin D supplementation a viable treatment for Crohn's disease?, Expert Rev Gastroenterol Hepatol, 10, (1), 2016, p1 - 4Journal Article, 2016
  • Raftery T, O'Sullivan M, Optimal vitamin D levels in Crohn's disease: a review., The Proceedings of the Nutrition Society, 74, (1), 2015, p56-66Journal Article, 2015, DOI , TARA - Full Text
  • O'Sullivan M, Vitamin D as a novel therapy in inflammatory bowel disease: new hope or false dawn?, The Proceedings of the Nutrition Society, 74, (1), 2015, p5-12Journal Article, 2015, DOI , TARA - Full Text
  • M O'Sullivan, C O'Morain, Patient knowledge in inflammatory bowel disease, American Journal of Gastroenterology , 95, (8), 2000, p2128 - 2129Journal Article, 2000
  • M O'Sullivan, E Lovett, N Mahmud, CA O'Morain, Educational needs and patient knowledge in patients with irritable bowel syndrome , European Journal of Gastroenterology & Hepatology, 11, 2000, p1 - 5Journal Article, 2000
  • D Mc Namara, W Hall, M O'Sullivan, C O'Morain C. , Altered cardia epithelial cell kinetics induced by Helicobacter pylori infection and gastro-oesophageal reflux disease: possible malignant potential? , European Journal of Gastroenterology & Hepatology, 15, (7), 2003, p767 - 772Journal Article, 2003
  • Q Dong, M O'Sullivan, W Hall, C Herra, C Kean, C O'Morain, M Buckley, 11. Identification of a new segment involved in cagA 3' region variation of Helicobacter pylori, FEMS Immunol Med Microbiol, 33, (1), 2002, p51 - 55Journal Article, 2002
  • D McNamara D, M Buckley, P Crotty, W Hall, M O'Sullivan, C O'Morain, Carditis: all Helicobacter pylori or is there a role for gastro-oesophageal reflux? , Scandinavian Journal of Gastroenterology , 37, 2002, p772 - 777Journal Article, 2002
  • M O'Sullivan, C O'Morain, Nutritional treatments in inflammatory bowel disease, Current Treatment Options in Gastroenterology , 4, 2001, p207 - 213.Journal Article, 2001
  • M O'Sullivan, C O'Morain, Liquid diets for Crohn's disease, Gut , 48, (6), 2001, p757. - 757Journal Article, 2001
  • A Qasim, H O'Brien, S Sebastian S, M O'Sullivan, M Buckley, C O'Morain, Platelet activation in patients with irritable bowel syndrome may reflect a subclinical inflammatory response, Gut, 52, (12), 2003, p1799 - 1800Journal Article, 2003
  • MA O'Sullivan, CA O'Morain, Nutritional therapy in Crohn's disease, Inflammatory Bowel Disease , 4, (1), 1998, p45 - 53Journal Article, 1998
  • C O'Morain, M O'Sullivan, The role of nutrition in liver disease, Irish Medical Journal , 89, 1996, p208 - 209Journal Article, 1996
  • C O'Morain, M O'Sullivan, Nutritional support in Crohn's disease, J Gastroenterol , 30, (VIII), 1995, p102 - 107Journal Article, 1995
  • Are we able to treat Inflammatory Bowel Disease with diet? in, editor(s)Vucelic B, Colombel JF, Grasche C, Scholmerich J , IBD: translation from basic research to clinical practice (Falk symposium 140). , UK, Kluwer Academic Publishers, 2005, pp138 - 146, [T Nic Suibhne, CA O'Morain, M O'Sullivan]Book Chapter, 2005
  • Diet in Crohn's disease in, editor(s)T Shimoyama, A Axon, A Lee, DK Podolsky, C O'Morain , In Helicobacter meets inflammatory bowel disease, Tokyo, Japan, Medical Tribune Inc., 2002, pp453 - 467, [MA O'Sullivan, CA O'Morain, JM Buckley]Book Chapter, 2002
  • Nutrition in Inflammatory Bowel Disease in, editor(s)Scholmerich, Goebell, Andus, Layer , Inflammatory Bowel Disease - from bench bedside, Kluwer , 1997, pp303 - 312, [C O'Morain, M O'Sullivan]Book Chapter, 1997
  • Dietary manipulations - elemental and enteral in, editor(s)Allan , Inflammatory Bowel Diseases 3rd Edition , Churchill Livingstone, 1996, pp535 - 539, [C O'Morain, M O'Sullivan. ]Book Chapter, 1996
  • A Baxendale,C Bountra, N Clayton, D Gunput, PPA Humphrey, K Kozlowski, A Mangel, M O'Sullivan., Irritable bowel syndrome as visceral hyperalgesia: implications for therapy., Current Opinions in central & peripheral nervous system investigational drugs, 1, (1), 1999, p86 - 97Journal Article, 1999
  • Aspell N, Lawlor B, O'Sullivan M, Is there a role for vitamin D in supporting cognitive function as we age?, Proc Nutr Soc., Dec 13:, (Epub ahead of print), 2017, p1 - 11Journal Article, 2017
  • Kelly S, O'Brien I , Smuts K, O'Sullivan M, Warters A., Prevalence of frailty among community dwelling older adults in receipt of low level home support: a cross-sectional analysis of the North Dublin Cohort., BMC Geriatr. , 17, (121), 2017, p1 - 11Journal Article, 2017, TARA - Full Text
  • Boland K, Maher N, O'Hanlon C, O'Sullivan M, Rice N, Smyth M, Reynolds JV, Home enteral nutrition recipients: patient perspectives on training, complications and satisfaction., Frontline Gastroenterol. , 8, (1), 2017, p79 - 84Journal Article, 2017, TARA - Full Text
  • I. O'Brien, K. Smuts, C. W. Fan, M.O'Sullivan, A. Warters., High prevalence of dementia among community dwelling older adults in receipt of state funded home care packages: implications for health care planning, Irish Journal of Psychological Medicine, E-pub, 2017, p1 - 6Journal Article, 2017, TARA - Full Text
  • O'Sullivan F, Raftery T, van Weele M, van Geffen J, McNamara D, O'Morain C, Mahmud N, Kelly D, Healy M, O'Sullivan M, Zgaga L., Sunshine is an important determinant of vitamin D status even among high-dose supplement users: secondary analysis of a randomised controlled trial in Crohn's disease patients., Photochemistry and Photobiology, 95, (4), 2019, p1060 - 1067Journal Article, 2019, DOI
  • Lauren Swan, Maria O'Sullivan, Austin Warters, Kate Irving, Socioeconomic and social factors among community-dwelling dependent older people with cognitive impairment in Ireland, Age and Ageing 2019; doi: 10.1093/ageing/afz102.55, 48, 2019, piii1 - iii16Journal Article, 2019
  • Horgan NF, Cummins V, Doyle F, O'Sullivan M, Galvin R, Burton E, Sorensen J, Skelton DA, Townley B, Rooney D, Jackson G, Swan L, Warters A., Enhancing existing formal home care to improve and maintain functional status in older adults: Protocol for a feasibility study on the implementation of the Care to Move (CTM) programme in an Irish healthcare setting., J Frailty Sarcopenia Falls, 5, (1), 2020, p10-16Journal Article, 2020, DOI
  • L Swan, A Warters, M O'Sullivan , Socioeconomic Inequality Is A Determinant Of Probable Sarcopenia In Community dwelling Older Adults. , ESPEN Conference 2020, Sept, 2020Journal Article, 2020
  • Laird E, Walsh JB, Lanham-New S, O'Sullivan M, Kenny RA, Scully H, Crowley V, Healy M., A High Prevalence of Vitamin D Deficiency Observed in an Irish South East Asian Population: A Cross-Sectional Observation Study., Nutrients, 12, (12), 2020Journal Article, 2020, DOI
  • Aspell N, Laird E, Healy M, Shannon T, Lawlor B, O'Sullivan M., The Prevalence and Determinants of Vitamin D Status in Community-Dwelling Older Adults: Results from the English Longitudinal Study of Ageing (ELSA)., Nutrients, 11, (6), 2019Journal Article, 2019, DOI
  • Swan, Lauren, Warters, Austin, O'Sullivan, Maria, Socioeconomic Inequality and Risk of Sarcopenia in Community-Dwelling Older Adults, Clinical Interventions in Aging, Volume 16, 2021, p1119-1129Journal Article, 2021, DOI
  • Aspell, Niamh, Laird, Eamon, Healy, Martin, Lawlor, Brian, O'Sullivan, Maria,

    Vitamin D Deficiency Is Associated With Impaired Muscle Strength And Physical Performance In Community-Dwelling Older Adults: Findings From The English Longitudinal Study Of Ageing

    , Clinical Interventions in Aging, Volume 14, 2019, p1751-1761Journal Article, 2019, DOI
  • Aspell, Niamh, O'Sullivan, Maria, O'Shea, Eamon, Irving, Kate, Duffy, Chloe, Gorman, Rebecca, Warters, Austin, Predicting admission to long"term care and mortality among community"based, dependent older people in Ireland, International Journal of Geriatric Psychiatry, 34, (7), 2019, p999-1007Journal Article, 2019, DOI
  • Swan, Lauren, Horgan, N Frances, Cummins, Vanda, Burton, Elissa, Galvin, Rose, Skelton, Dawn A, Townley, Bex, Doyle, Frank, Jabakhanji, Samira, Sorensen, Jan, Rooney, Debbie, Murphy, Lisa, Warters, Austin, O'Sullivan, Maria, Embedding Physical Activity Within Community Home Support Services for Older Adults in Ireland " A Qualitative Study of Barriers and Enablers, Clinical Interventions in Aging, Volume 17, 2022, p223-234Journal Article, 2022, DOI
  • Lauren Swan, Austin Warters, Maria O'Sullivan, Socioeconomic Disadvantage is Associated with Probable Sarcopenia in Community-dwelling Older Adults: Findings from the English Longitudinal Study of Ageing, The Journal of Frailty & Aging, 2022, p10.14283/jfa.2022.32Journal Article, 2022
  • Lauren Swan, N Frances Horgan, Chie Wei Fan, Austin Warters, Maria O'Sullivan. , Residential area socioeconomic deprivation is associated with physical dependency and polypharmacy in community-dwelling older adults: an analysis of health administrative data in Ireland, Journal of Multidisciplinary Healthcare, 2022, pin press accepted Aug 25, 2022Journal Article, 2022
  • Q Dong, M O'Sullivan, A Nami, P Dowling, G Murphy ,M Buckley, C O'Morain., 1. A genetic locus of Helicobacter pylori inversely associated with gastric intestinal metaplasia, FEMS Immunol Med Microbiol , 44, (2), 2005, p243 - 249Journal Article, 2005
  • Dring M, C Goulding, V Trimble, D Keegan, AW Ryan, K Brophy, C Smyth, PW N Keeling, D O'Donoghue, M O'Sullivan, C O'Morain, N Mahmud, A-C Wikstrm, D. Kelleher, R McManus., The Pregnane X Receptor Locus Is Associated With Susceptibility to Inflammatory Bowel Disease, Gastroenterology, 130, 2006, p341 - 348Journal Article, 2006
  • M O'Sullivan, C O'Morain, Nutrition in Inflammatory bowel disease, Best Practice & Research Clinical Gastroenterology , 20 , 2006, p561 - 573Journal Article, 2006
  • O'Sullivan M, Nic Suibhne T, Cox G, Healy M, O'Morain C, High prevalence of vitamin D insufficiency in healthy Irish adults, Irish Journal of Medical Science, Feb 15, (PMID: 18274816), 2008Journal Article, 2008
  • Maria O'Sullivan, Joint Nutrition Society and Irish Nutrition and Dietetic Institute Symposium on 'Nutrition and autoimmune disease' Nutrition in Crohn's disease, Proceedings of the Nutrition Society , 68, (2), 2009, p1 - 8Journal Article, 2009, DOI , URL , TARA - Full Text
  • Murphy, G, Thornton, J, McManus, R, Swan, N, Ryan, B, Hughes, DJ, O'Morain, CA, O'Sullivan, M, Association of gastric disease with polymorphisms in the inflammatory-related genes IL-1B, IL-1RN, IL-10, TNF and TLR4., European journal of gastroenterology & hepatology, 21, (6), 2009, p630 - 635Journal Article, 2009, DOI
  • Hughes DJ, McManus R, Neary P, O'Morain C, O'Sullivan M , Common Variation in the Vitamin D Receptor Gene and Risk of Inflammatory Bowel Disease in an Irish Case-Control Study, Eur J Gastroenterol Hepatol, 23, (9), 2011, p807 - 812Journal Article, 2011
  • P Kelly, T Nic Suibhne, C O'Morain, M O'Sullivan, Vitamin D deficiency and cytokine levels in Crohn's disease, International Journal for Vitamin and Nutrition Research, 81, (4), 2011, p205 - 210Journal Article, 2011, DOI
  • Maria O'Sullivan, Therapeutic potential of ketotifen in Irritable Bowel Syndrome (IBS) may involve changes in mast cells at sites beyond the rectum, Gut, 60, (3), 2011, p423 - 423Journal Article, 2011
  • Duggan S, O'Sullivan M, Feehan S, Ridgway P, Conlon K, Nutrition treatment of deficiency and malnutrition in chronic pancreatitis: a review., Nutrition in clinical practice : official publication of the American Society for Parenteral and Enteral Nutrition, 25, (4), 2010, p362-70Journal Article, 2010, DOI
  • O'Donnell S, Murphy S, Anwar MM, O'Sullivan M, Breslin N, O'Connor HJ, Ryan BM, O'Morain CA, Safety of infliximab in 10 years of clinical practice., Eur J Gastroenterol Hepatol, 23, (7), 2011, p603 - 606Journal Article, 2011, DOI
  • Tara Raftery, Maria O'Sullivan, Risk Factors for Cardiovascular Events in Inflammatory Bowel Disease. , American Journal of Gastroenterology , 106, (11), 2011, p2042 - 2042Journal Article, 2011, DOI
  • S Duggan, N Smyth, M O'Sullivan, S Feehan, P Ridgeway, K Conlon, A transatlantic survey of nutrition practice in acute pancreatitis, J Hum Nutr Diet , 25, (4), 2012, p388 - 397Journal Article, 2012
  • Nic Suibhne T, Cox G, Healy M, O Morain C, O Sullivan M, Vitamin D deficiency in Crohns disease: Prevalence, risk factors and supplement use in an outpatient setting., Journal of Crohns & Colitis, 6, (2), 2012, p182-8Journal Article, 2012, DOI
  • Ewa Wilcz , Colm O'Morain, Siobhan McClean, Maria O'Sullivan, Effects of Tryptase and Mast cells on Intestinal Permeability and Tight Junction Proteins: implications for the pathogenesis of IBS, Gastroenterology , American Gastroenterology Association meeting, Digestive Disease Week, New Orleans, USA, May 2010, 138, 2010, ppS-625 - S-625Conference Paper, 2010
  • Ewa Wilcz, Siobhan McClean, Maria O'Sullivan, Mast cell Tryptase Alters Intestinal Permeability and Tight Junction Proteins: Implications for the Pathogenesis of IBS, Endoscopy, United European Gastroenterology Week (UEGW), Barcelona, Spain., October 2010, 2010, ppM1124 - M1124Conference Paper, 2010
  • E Wilcz, S McClean, M O'Sullivan, Mast Cell Tryptase Reduces Junctional Adhesion Molecule-A (JAM-A) Expression in Human Intestinal Epithelial Cells: Implications for the Mechanisms of Barrier Dysfunction in Irritable Bowel Syndrome (IBS), Gastroenterology, American Gastroenterological Association, Digestive Disease Week, Chicago, USA, May 2011, 140, (5), 2011, ppS-504 - S-504Conference Paper, 2011, URL
  • Sarah O'Donnell, Maria O'Sullivan, Niall Breslin, Humphrey J. O'Connor, Colm A. O'Morain, Paul L. Crotty, Barbara M. Ryan, 53. Isolated Active Ileitis: Serological and Genetic Profile, Gastroenterology, American Gastroenterological Association, Digestive Disease Week, Chicago, 2011, May 2011, 140, 2011, ppS-1 - S-1Conference Paper, 2011
  • Raftery T, O'Morain C, O'Sullivan M., Vitamin D: New Roles and Therapeutic Potential in Inflammatory Bowel Disease., Current Drug Metabolism, 13, (9), 2012, p1294 - 1302Journal Article, 2012
  • E Wilcz,, S McClean, M O'Sullivan. , Mast cell tryptase reduces junctoinal adhesion molecule A in intestinal epithelial cells: implications for barrier dysfunction in Irritable Bowel Syndrome. , American J Gastroenterol, E-pub , (Jan), 2013, p0 - 0Journal Article, 2013
  • Duggan SN, O Sullivan M, Hamilton S, Feehan SM, Ridgway PF, Conlon KC, Patients with chronic pancreatitis are at increased risk for osteoporosis., Pancreas, 41, (7), 2012, p1119-24Journal Article, 2012
  • Nic Suibhne T, Raftery TC, McMahon O, Walsh C, O Morain C, O'Sullivan M, High prevalence of overweight and obesity in adults with Crohn's disease: Associations with disease and lifestyle factors., Journal of Crohns & colitis, Oct 3, 2012Journal Article, 2012
  • O'Sullivan M, Raftery T, Nic Suibhne T, Differences in obesity in Crohn's disease in Japan and western countries, J Crohns Colitis, Nov , 2013Journal Article, 2013
  • Dietary treatment of Inflammatory Bowel Disease in, editor(s)Miranda Lomer , Diet and Inflammatory Bowel Disease, UK, 2013, pp0 - 0, [Maria O'Sullivan, Tara Raftery]Book Chapter, 2013
  • T Raftery, A Martineau, C Greiller, S Ghosh, D McNamara, J Meddings, M O'Sullivan, Effects of Vitamin D Supplementation on Intestinal Permeability, Plasma Cathelicidin and Human Beta-Defensin-2 in Crohn's Disease: Results from a Randomised Double-blind Placebo-Controlled Study, Gastroenterology, American Gastroenterological Association, Florida, US, April 2013, edited by DDW , S, DDW, 2013, pp0 - 0Conference Paper, 2013
  • Wilcz-Villega E, McClean S, O'Sullivan M, Reduced E-cadherin expression is associated with abdominal pain and symptom duration in a study of alternating and diarrhea predominant IBS, Neurogastroenterol Motil. , 26, (3), 2014, p316 - 325Journal Article, 2014
  • Duggan SN, Smyth ND, O'Sullivan M, Feehan S, Ridgway PF, Conlon KC., The prevalence of malnutrition and fat-soluble vitamin deficiencies in chronic pancreatitis., Nutr Clin Pract., 29, (3 ), 2014, p348 - 354Journal Article, 2014, DOI