Professor Andrew Day, Our people, University of Otago, Christchurch

Head of Department / Cure Kids Chair of Paediatric Research at UOC

MB ChB MD FRACP AGAF

Tel +64 3 372 6718
Email andrew.day@otago.ac.nz

Andrew Day trained in paediatrics in Christchurch and undertook further subspeciality training in Toronto, Canada.

After completing clinical and research training in Canada, Professor Day took up a clinical academic position at University of New South Wales, Sydney, Australia.

He returned to the department in 2009 and was appointed to Head of Department in 2010.

Professor Day is a paediatric gastroenterologist.

Research interests

Inflammatory Bowel disease
Coeliac disease
Improving Crohn's outcomes

Projects focus

Host-pathogen interactions in the gut (and how these relate to chronic gut diseases)
Intestinal inflammatory biomarkers
Nutritional aspects of gut diseases

Publications

Wong, P. Y., Yip, C., Lemberg, D. A., Day, A. S., & Leach, S. T. (2023). Evolution of a pathogenic microbiome. Journal of Clinical Medicine, 12, 7184. doi: 10.3390/jcm12227184

Vernon-Roberts, A., Premaratne, M., Wright, R., Keenan, J. I., & Day, A. S. (2023). Profile of Helicobacter pylori infections among children in the South Island of New Zealand (2010-2021). Helicobacter, e13037. Advance online publication. doi: 10.1111/hel.13037

Pipicella, J. L., Vernon-Roberts, A., Dutt, S., Giles, E., Day, A. S., Connor, S. J., & Andrews, J. M. (2023). Co-design and consultation ensure consumer needs are net: Building an eHealth platform for children with inflammatory bowel disease. Digestive Diseases & Sciences, 68, 4368-4380. doi: 10.1007/s10620-023-08146-2

Robson, N., & Day, A. S. (2023). Looking for coeliac disease hiding in the family. Medical Journal of Australia. Advance online publication. doi: 10.5694/mja2.52116

Liu, G. X. H., & Day, A. S. (2023). Plant-based diets for inflammatory bowel disease: What is the evidence? Inflammatory Bowel Diseases, izad213. Advance online publication. doi: 10.1093/ibd/izad213

Brown, S. C., Wall, C. L., Gearry, R. B., & Day, A. S. (2023). Exclusive enteral nutrition for the treatment of pediatric Crohn’s disease: The patient perspective. Pediatric Gastroenterology, Hepatology & Nutrition, 26(3), 165-172. doi: 10.5223/pghn.2023.26.3.165

Brown, S., Wall, C. L., Frampton, C., Gearry, R. B., & Day, A. S. (2023). The low FODMAP diet for Children with inflammatory bowel disease and overlapping functional gastrointestinal symptoms: A case series. Recent Progress in Nutrition, 3(2), 009. doi: 10.21926/rpn.2302009

Forbes, A. J., Frampton, C. M. A., Day, A. S., Vernon-Roberts, A., & Gearry, R. B. (2023). Descriptive epidemiology of paediatric inflammatory bowel disease in Oceania: A systematic review and meta-analysis. Journal of Pediatric Gastroenterology & Nutrition, 77(4), 512-518. doi: 10.1097/MPG.0000000000003900

Lopez, R. N., Leach, S. T., Bowcock, N., Coker, E., Shapiro, A. J., Day, A. S., & Lemberg, D. A. (2023). Differences in gut microbiome profile between healthy children and children with inflammatory bowel disease and/or autoimmune liver disease: A case-control study. Pathogens, 12, 585. doi: 10.3390/pathogens12040585

Magen-Rimon, R., Day, A. S., & Shaoul, R. (2023). Nutritional aspects of inflammatory bowel disease. Expert Review of Gastroenterology & Hepatology. Advance online publication. doi: 10.1080/17474124.2023.2231340

Mules, T. C., Swaminathan, A., Hirschfeld, E., Borichevsky, G. M., Frampton, C. M., Day, A. S., & Gearry, R. B. (2023). The impact of disease activity on sexual and erectile dysfunction in patients with inflammatory bowel disease. Inflammatory Bowel Diseases, 29, 1244-1254. doi: 10.1093/ibd/izac204

Talebi, S., Day, A. S., Safarian, M., Sayedi, S. J., Jaafari, M. R., Abbasi, Z., … Kianifar, H. R. (2023). Adjunctive nano-curcumin therapy improves inflammatory and clinical indices in children with cystic fibrosis: A randomized clinical trial. Food Science & Nutrition. Advance online publication. doi: 10.1002/fsn3.3323

Vernon-Roberts, A., Alexander, I., & Day, A. S. (2023). Prevalence of functional gastrointestinal disorders (Rome IV criteria) among a cohort of New Zealand children. Gastrointestinal Disorders, 5, 261-272. doi: 10.3390/gidisord5020021

Vernon-Roberts, A., Denny, A., & Day, A. S. (2023). Point prevalence of complementary or alternative medicine use among children attending a tertiary care hospital. Children, 10, 132. doi: 10.3390/children10010132

Vernon-Roberts, A., Musto, F., Aloi, M., & Day, A. S. (2023). Italian cross-cultural adaptation of a knowledge assessment tool (IBD-KID2) for children with inflammatory bowel disease. Gastrointestinal Disorders, 5, 187-197. doi: 10.3390/gidisord5020016

Vernon-Roberts, A., Rouse, E., Bowcock, N. L., Lemberg, D. A., & Day, A. S. (2023). Agreement level of inflammatory bowel disease symptom reports between children and their parents. Pediatric Gastroenterology, Hepatology & Nutrition, 26(2), 88-98. doi: 10.5223/pghn.2023.26.2.88

Zain-Alabedeen, S., Kamel, N., Amin, M., Vernon-Roberts, A., Day, A. S., & Khashana, A. (2023). Fecal calprotectin and cow's milk-related-symptoms score in children with cow's milk protein allergy. Pediatric Gastroenterology, Hepatology & Nutrition, 26(1), 43-49. doi: 10.5223/pghn.2023.26.1.43

Brown, S. C., Whelan, K., Frampton, C., Wall, C. L., Gearry, R. B., & Day, A. S. (2022). Food-related quality of life in children and adolescents with Crohn's disease. Inflammatory Bowel Diseases, 28, 1838-1843. doi: 10.1093/ibd/izac010

Brown, S., Wall, C. L., Frampton, C., Gearry, R. B., & Day, A. S. (2022). Dietary nutrient intake and blood micronutrient status of children with Crohn's disease compared with their shared-home environment, healthy siblings. Nutrients, 14, 3425. doi: 10.3390/nu14163425

Buerkle, K. S., Vernon-Roberts, A., Ho, C., Schultz, M., & Day, A. S. (2022). A short knowledge assessment tool is valid and acceptable for adults with inflammatory bowel disease. Digestive Diseases & Sciences, 67, 2049-2058. doi: 10.1007/s10620-022-07507-7

Ho, S. S. C., Evans, H. M., Roberts, A. J., Thapar, N., Dutt, S., Thacker, K., … Day, A. S., on behalf of the PEDiatric Australasian Gastroenterology REsearch NEtwork (PEDAGREE). (2022). Australasian paediatric gastroenterologist practices of coeliac disease diagnosis before and during the COVID-19 pandemic. Journal of Paediatrics & Child Health, 16227. Advance online publication. doi: 10.1111/jpc.16227

Ho, S. S. C., Hall, S., Keenan, J. I., & Day, A. S. (2022). Australasian pediatric gastroenterologists' perspectives and practices of Celiac disease diagnosis and management. Digestive Diseases & Sciences, 67, 1744-1752. doi: 10.1007/s10620-021-06988-2

Khalilipour, B. S., Day, A. S., Kenrick, K., Schultz, M., & Aluzaite, K. (2022). Diagnostic delay in paediatric inflammatory bowel disease: A systematic investigation. Journal of Clinical Medicine, 11, 4161. doi: 10.3390/jcm11144161

Kord Varkaneh, H., Poursoleiman, F., Al Masri, M. K., Alras, K. A., Shayah, Y., Masmoum, M. D., … Day, A. S., … Kutbi, E. (2022). Low fat diet versus low carbohydrate diet for management of non-alcohol fatty liver disease: A systematic review. Frontiers in Nutrition, 9, 987921. doi: 10.3389/fnut.2022.987921

Martin, N. G., Roberts, A. J., Evans, H. M., Bishop, J., & Day, A. S. (2022). Adherence to the New Zealand pediatric guideline for the assessment and diagnosis of inflammatory bowel disease. JPGN Reports, 3(4), e266. doi: 10.1097/PG9.0000000000000266

Mules, T. C., Swaminathan, A., Hirschfeld, E., Borichevsky, G., Frampton, C., Day, A. S., & Gearry, R. B. (2022). The impact of disease activity on psychological symptoms and quality of life in patients with inflammatory bowel disease-results from the Stress, Anxiety and Depression with Disease Activity (SADD) Study. Alimentary Pharmacology & Therapeutics, 55, 201-211. doi: 10.1111/apt.16616

Swaminathan, A., Borichevsky, G. M., Edwards, T. S., Hirschfeld, E., Mules, T. C., Frampton, C. M. A., Day, A. S., Hampton, M. B., Kettle, A. J., & Gearry, R. B. (2022). Faecal myeloperoxidase as a biomarker of endoscopic activity in inflammatory bowel disease. Journal of Crohn's & Colitis, 16, 1862-1873. doi: 10.1093/ecco-jcc/jjac098

Swaminathan, A., Fan, D., Borichevsky, G. M., Mules, T. C., Hirschfeld, E., Frampton, C. M., Day, A. S., … Gearry, R. B. (2022). The disease severity index for inflammatory bowel disease is associated with psychological symptoms and quality of life, and predicts a more complicated disease course. Alimentary Pharmacology & Therapeutics, 56, 664-674. doi: 10.1111/apt.17058

Talebi, S., Day, A. S., Rezaiyan, M. K., Ranjbar, G., Zarei, M., Safarian, M., & Kianifar, H. R. (2022). Fecal calprotectin and phenotype severity in patients with cystic fibrosis: A systematic review and meta-analysis. Pediatric Gastroenterology, Hepatology & Nutrition, 25(1), 1-12. doi: 10.5223/pghn.2022.25.1.1

Vernon-Roberts, A., Lopez, R. N., Frampton, C. M. A., & Day, A. S. (2022). Meta-analysis of the efficacy of taurolidine in reducing catheter-related bloodstream infections for patients receiving parenteral nutrition. Journal of Parenteral & Enteral Nutrition, 46, 1535-1552. doi: 10.1002/jpen.2363

Volkers, A. G., Appleton, L., Gearry, R. B., Frampton, C. M., De Voogd, F. A. E., Peters van Ton, A. M., … Day, A. S. (2022). Fecal calprotectin, chitinase 3-like-1, S100A12 and osteoprotegerin as markers of disease activity in children with Crohn's disease. Gastrointestinal Disorders, 4(3), 180-189. doi: 10.3390/gidisord4030017

Edwards, T. S., Dawson, K. L., Keenan, J. I., & Day, A. S. (2021). A simple method to generate β-casomorphin-7 by in vitro digestion of casein from bovine milk. Journal of Functional Foods, 85, 104631. doi: 10.1016/j.jff.2021.104631

Ho, S. S. C., Keenan, J. I., & Day, A. S. (2021). Parent Perspectives of Diagnostic and Monitoring Tests Undertaken by Their Child with Inflammatory Bowel Disease. Pediatric Gastroenterology, Hepatology & Nutrition, 24(1), 19-29. doi: 10.5223/pghn.2021.24.1.19

Roberts, A. J., Day, A. S., Sinclair, J., Dickson, N., Porter, J., Wellington, G., & Evans, H. M. (2021). Paediatric eosinophilic oesophagitis in New Zealand: A 3-year prospective study. Journal of Paediatrics & Child Health, 57, 234-238. doi: 10.1111/jpc.15183

Vernon-Roberts, A., Alexander, I., & Day, A. S. (2021). Systematic review of pediatric functional gastrointestinal disorders (Rome IV criteria). Journal of Clinical Medicine, 10, 5087. doi: 10.3390/jcm10215087

Vernon-Roberts, A., Frampton, C., Gearry, R. B., & Day, A. S. (2021). Development and validation of a self-management skills assessment tool for children with inflammatory bowel disease: The IBD-Skills Tasks and Abilities Record (IBD-STAR). Journal of Pediatric Gastroenterology & Nutrition, 72(1), 67-73. doi: 10.1097/MPG.0000000000002905

Vernon-Roberts, A., Lopez, R. N., Lewindon, P., Lemberg, D. A., Bowcock, N. L., Alex, G., … Gearry, R. B., & Day, A. S. (2021). Assessment of disease-related knowledge among children with inflammatory bowel disease and their family using IBD-KID2: Evaluating tool generalizability. JPGN Reports, 2(3), e093. doi: 10.1097/PG9.0000000000000093

Zhang, Y., Jiang, X., Li, X., Găman, M.-A., Kord-Varkaneh, H., Rahmani, J., … Day, A. S., & Xu, Y. (2021). Serum vitamin D levels and risk of liver cancer: A systematic review and dose-response meta-analysis of cohort studies. Nutrition & Cancer, 73(8), 1-9. doi: 10.1080/01635581.2020.1797127

Zhen, J., Stefanolo, J. P., de la Paz Temprano, M., Seiler, C. L., Caminero, A., de-Madaria, E., … Day, A. S., … Pinto-Sanchez, M. I. (2021). Risk perception and knowledge of COVID-19 in patients with celiac disease. World Journal of Gastroenterology, 27(12), 1213-1225. doi: 10.3748/wjg.v27.i12.1213

Ali, F., Lui, K., Wang, A., Day, A. S., & Leach, S. T. (2020). The perinatal period, the developing intestinal microbiome and inflammatory bowel diseases: What links early life events with later life disease? Journal of the Royal Society of New Zealand, 50(3), 371-383. doi: 10.1080/03036758.2019.1706586

Appleton, L., Watt, E., Jagger, F., Hansen, R., Gearry, R. B., & Day, A. S. (2020). Associations between the presence of granulomata and disease phenotype and outcomes in children diagnosed with Crohn’s disease. Gastrointestinal Disorders, 2(2), 164-170. doi: 10.3390/gidisord2020017

Brown, S. C., Whelan, K., Gearry, R. B., & Day, A. S. (2020). Low FODMAP diet in children and adolescents with functional bowel disorder: A clinical case note review. JGH Open, 4, 153-159. doi: 10.1002/jgh3.12231

Ho, S. S. C., Keenan, J. I., & Day, A. S. (2020). Role of serological tests in the diagnosis of coeliac disease in children in New Zealand. Journal of Paediatrics & Child Health, 56, 1906-1911. doi: 10.1111/jpc.15076

Ho, S. S. C., Ross, M., Keenan, J. I., & Day, A. S. (2020). Fecal calprotectin in combination with standard blood tests in the diagnosis of inflammatory bowel disease in children. Frontiers in Pediatrics, 8, 609279. doi: 10.3389/fped.2020.609279

Ho, S. S., Wall, C., Gearry, R. B., Keenan, J., & Day, A. S. (2020). A pilot study evaluating novel urinary biomarkers for Crohn's disease. Inflammatory Intestinal Diseases, 5(4), 212-220. doi: 10.1159/000510682

Jafari, S., Otley, A., Vahed, H., Heidari, E., Khakshour, A., Tehranian, S., … Day, A. S., & Sayedi, J. (2020). Validation of the Persian version of IMPACT-III Quality of Life Questionnaire in Iranian children with inflammatory bowel disease. Iranian Journal of Pediatrics, 30(2), e86281. doi: 10.5812/ijp.86281

Leach, S. T., Day, A. S., Messenger, R., Walters, T. D., Navas-López, V. M., Sladek, M., … on behalf of the ImageKids study group. (2020). Fecal markers of inflammation and disease activity in paediatric Crohn disease: Results from the ImageKids Study. Journal of Pediatric Gastroenterology & Nutrition, 70(5), 580-585. doi: 10.1097/mpg.0000000000002615

Lopez, R. N., McCombie, A., Gearry, R. B., & Day, A. S. (2020). Impact of a camp upon disease-specific knowledge and quality of life in children and adolescents with inflammatory bowel disease. Inflammatory Intestinal Diseases, 5, 65-69. doi: 10.1159/000505918

Martin, N. G., Roberts, A. J., Evans, H. M., Bishop, J., & Day, A. S. (2020). Three-year outcomes of childhood inflammatory bowel disease in New Zealand: A population-based cohort study. JGH Open, 4(4), 642-648. doi: 10.1002/jgh3.12310

Porter, J. A., MacKenzie, K. E., Darlow, B. A., Pearson, J. F., & Day, A. S. (2020). A questionnaire-based assessment of gastrointestinal symptoms in children with type 1 diabetes mellitus. Translational Pediatrics, 9(6), 743-749. doi: 10.21037/tp-20-139

Vernon-Roberts, A., Gearry, R. B., & Day, A. S. (2020). Assessment of knowledge levels following an education program for parents of children with inflammatory bowel disease. Frontiers in Pediatrics, 8, 475. doi: 10.3389/fped.2020.00475

Vernon-Roberts, A., Gearry, R. B., & Day, A. S. (2020). The level of public knowledge about inflammatory bowel disease in Christchurch, New Zealand. Inflammatory Intestinal Diseases, 5(4), 205-211. doi: 10.1159/000510071

Vernon-Roberts, A., Otley, A., Frampton, C., Gearry, R. B., & Day, A. S. (2020). Response pattern analysis of IBD-KID: A knowledge assessment tool for children with inflammatory bowel disease. Journal of Paediatrics & Child Health, 56(1), 155-162. doi: 10.1111/jpc.14547

Vernon-Roberts, A., Otley, A., Frampton, C., Gearry, R. B., & Day, A. S. (2020). Validation of a revised knowledge assessment tool for children with inflammatory bowel disease (IBD-KID2). Inflammatory Intestinal Diseases, 5, 70-77. doi: 10.1159/000506200

Wall, C. L., McCombie, A., Mulder, R., Day, A. S., & Gearry, R. B. (2020). Adherence to exclusive enteral nutrition by adults with active Crohn’s disease is associated with conscientiousness personality trait: A sub-study. Journal of Human Nutrition & Dietetics, 33(6), 752-757. doi: 10.1111/jhn.12787

Day, A. S. (2019). Exclusive enteral nutrition in children with Crohn’s disease: A focused nutritional intervention. In R. R. Watson & V. R. Preedy (Eds.), Dietary interventions in gastrointestinal diseases: Foods nutrients, and dietary supplements. (pp. 107-116). London, UK: Academic Press. doi: 10.1016/B978-0-12-814468-8.00009-0

Leach, S. T., & Day, A. S. (2019). Enzyme-linked immunosorbent assay to measure S100A12 in fecal samples of children and adults. In C. W. Heizmann (Ed.), Calcium-binding proteins of the EF-hand superfamily: From basics to medical applications: Methods in molecular biology (Vol. 1929). (pp. 755-761). New York, NY: Humana Press. doi: 10.1007/978-1-4939-9030-6_47

Ho, S. S. C., & Day, A. S. (2019). Exclusive enteral nutrition in children with inflammatory bowel disease: Physician perspectives and practice. JGH Open, 3, 148-153. doi: 10.1002/jgh3.12121

Isoldi, S., Belsha, D., Yeop, I., Uc, A., Zevit, N., Mamula, P., … Day, A. S., … Thomson, M. (2019). Diagnosis and management of children with Blue Rubber Bleb Nevus Syndrome: A multi-center case series. Digestive & Liver Disease, 51, 1537-1546. doi: 10.1016/j.dld.2019.04.020

Karim, S., Porter, J. A., McCombie, A., Gearry, R. B., & Day, A. S. (2019). Transition clinics: An observational study of themes important to young people with inflammatory bowel disease. Translational Pediatrics, 8(1), 83-89. doi: 10.21037/tp.2019.01.04

Martin, N. G., Rigterink, T., Adamji, M., Wall, C. L., & Day, A. S. (2019). Single high-dose oral vitamin D3 treatment in New Zealand children with inflammatory bowel disease. Translational Pediatrics, 8(1), 35-41. doi: 10.21037/tp.2018.11.01

Porter, J. A., MacKenzie, K. E., Darlow, B. A., Butler, R., & Day, A. S. (2019). Gastric emptying in children with type 1 diabetes mellitus: A pilot study. Journal of Paediatrics & Child Health, 55, 416-420. doi: 10.1111/jpc.14215

Rahmani, J., Kord Varkaneh, H., Ryan, P. M., Zarezadeh, M., Rashvand, S., Clark, C., Day, A. S., & Hekmatdoost, A. (2019). Healthy Eating Index-2015 as a predictor of ulcerative colitis risk in a case-control cohort. Journal of Digestive Diseases, 20, 649-655. doi: 10.1111/1751-2980.12826

Rahmani, J., Kord-Varkaneh, H., Hekmatdoost, A., Thompson, J., Clark, C., Salehisahlabadi, A., Day, A. S., & Jacobson, K. (2019). Body mass index and risk of inflammatory bowel disease: A systematic review and dose-response meta-analysis of cohort studies of over a million participants. Obesity Reviews, 20, 1312-1320. doi: 10.1111/obr.12875

Rahmani, J., Kord-Varkaneh, H., Ryan, P. M., Rashvand, S., Clark, C., Day, A. S., & Hekmatdoost, A. (2019). Dietary total antioxidant capacity and risk of ulcerative colitis: A case-control study. Journal of Digestive Diseases, 20, 636-641. doi: 10.1111/1751-2980.12823

Vernon-Roberts, A., Lopez, R. N., Frampton, C., Gearry, R. B., Lemberg, D. A., & Day, A. S. (2019). A symptom self-report tool for children with inflammatory bowel disease (IBDnow). Journal of Pediatric Gastroenterology & Nutrition, 69(1), e7-e12. doi: 10.1097/MPG.0000000000002329

Wall, C. L., McCombie, A. M., Gearry, R. B., & Day, A. S. (2019). Newly diagnosed Crohn's disease treated with standard care or enteral nutrition: Psychological outcomes over 6 months. Inflammatory Intestinal Diseases, 4(1), 7-13. doi: 10.1159/000497323

von der Weid, P.-Y., & Day, A. S. (2018). Pediatric lymphatic development and intestinal lymphangiectasia. In M. J. Caplan (Ed.), Reference module in biomedical sciences. Elsevier. doi: 10.1016/B978-0-12-801238-3.66051-8

Day, A. S., Gulati, A. S., Patel, N., Boyle, B., Park, K. T., & Saeed, S. A. (2018). The role of combination therapy in pediatric inflammatory bowel disease (IBD): A clinical report from the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition. Journal of Pediatric Gastroenterology & Nutrition, 66(2), 361-368. doi: 10.1097/mpg.0000000000001850

Garg, M., Leach, S. T., Pang, T., Needham, B., Coffey, M. J., Katz, T., … Day, A. S., … Ooi, C. Y. (2018). Age-related levels of fecal M2-pyruvate kinase in children with cystic fibrosis and healthy children 0 to 10 years old. Journal of Cystic Fibrosis, 17(1), 109-113. doi: 10.1016/j.jcf.2017.07.011

Lawley, M., Wu, J. W., Navas-López, V. M., Huynh, H. Q., Carroll, M. W., Chen, M., … Day, A. S., … Wine, E. (2018). Global variation in use of enteral nutrition for pediatric Crohn disease. Journal of Pediatric Gastroenterology & Nutrition, 67(2), e22-e29. doi: 10.1097/mpg.0000000000001946

Lopez, R. N., Appleton, L., Gearry, R. B., & Day, A. S. (2018). Rising incidence of paediatric inflammatory bowel disease in Canterbury, New Zealand, 1996-2015. Journal of Pediatric Gastroenterology & Nutrition, 66(2), e45-e50. doi: 10.1097/mpg.0000000000001688

Lopez, R. N., Evans, H. M., Appleton, L., Bishop, J., Chin, S., Mouat, S., Gearry, R. B., & Day, A. S. (2018). Prospective incidence of paediatric inflammatory bowel disease in New Zealand in 2015: Results from the Paediatric Inflammatory Bowel Disease in New Zealand (PINZ) Study. Journal of Pediatric Gastroenterology & Nutrition, 66(5), e122-e126. doi: 10.1097/mpg.0000000000001806

Moeeni, V., Walls, T., & Day, A. S. (2018). A retrospective comparison between the PNST and other paediatric nutritional screening tools. International Journal of Child Health & Nutrition, 7(3), 97-101. doi: 10.6000/1929-4247.2018.07.03.1

Aggarwal, V., Day, A. S., Connor, S., Leach, S. T., Brown, G., Singh, R., … Craig, P. I. (2017). Role of capsule endoscopy and fecal biomarkers in small-bowel Crohn's disease to assess remission and predict relapse. Gastrointestinal Endoscopy, 86(6), 1070-1078. doi: 10.1016/j.gie.2017.09.011

Alhagamhmad, M. H., Day, A. S., Lemberg, D. A., & Leach, S. T. (2017). Exploring and enhancing the anti-inflammatory properties of polymeric formula. Journal of Parenteral & Enteral Nutrition, 41(3), 436-445. doi: 10.1177/0148607115625627

Alhagamhmad, M. H., Lemberg, D. A., Day, A. S., Tan, L.-Z., Ooi, C. Y., Krishnan, U., … Leach, S. T. (2017). Advancing nutritional therapy: A novel polymeric formulation attenuates intestinal inflammation in a murine colitis model and suppresses pro-inflammatory cytokine production in ex-vivo cultured inflamed colonic biopsies. Clinical Nutrition, 36(2), 497-505. doi: 10.1016/j.clnu.2016.01.010

Bowden, M. R., Ee, L. C., Krishnan, U., O'Loughlin, E. V., Hardikar, W., Carmody, D., … Day, A. S., … Hazell, P. (2017). Family impact and infant emotional outcomes following diagnosis of serious liver disease or transplantation in infancy. Journal of Pediatric Gastroenterology & Nutrition, 64(4), 528-532. doi: 10.1097/mpg.0000000000001404

Budd, G. R., Aitchison, A., Day, A. S., & Keenan, J. I. (2017). The effect of polymeric formula on enterocyte differentiation. Innate Immunity, 23(3), 240-248. doi: 10.1177/1753425916689333

Chae, A., Aitchison, A., Day, A. S., & Keenan, J. I. (2017). Bovine colostrum demonstrates anti-inflammatory and antibacterial activity in in vitro models of intestinal inflammation and infection. Journal of Functional Foods, 28, 293-298. doi: 10.1016/j.jff.2016.11.016

Day, A. S., Mylvaganam, G., Shalloo, N., Clarkson, C., Leach, S. T., & Lemberg, D. A. (2017). Assessment of disease-specific knowledge in Australian children with inflammatory bowel disease and their parents. Journal of Paediatrics & Child Health, 53(8), 778-781. doi: 10.1111/jpc.13544

Duvoisin, G., Lopez, R. N., Day, A. S., Lemberg, D. A., Gearry, R. B., & Leach, S. T. (2017). Novel biomarkers and the future potential of biomarkers in inflammatory bowel disease. Mediators of Inflammation, 2017, 1936315. doi: 10.1155/2017/1936315

Flores, S. E., Aitchison, A., Day, A. S., & Keenan, J. I. (2017). Helicobacter pylori infection perturbs iron homeostasis in gastric epithelial cells. PLoS ONE, 12(9), e0184026. doi: 10.1371/journal.pone.0184026

Garg, M., Leach, S. T., Coffey, M. J., Katz, T., Strachan, R., Pang, T., … Day, A. S., Appleton, L., Moeeni, V., … Ooi, C. Y. (2017). Age-dependent variation of fecal calprotectin in cystic fibrosis and healthy children. Journal of Cystic Fibrosis, 16(5), 631-636. doi: 10.1016/j.jcf.2017.03.010

Holtman, G. A., Lisman-van Leeuwen, Y., Day, A. S., Fagerberg, U. L., Henderson, P., Leach, S. T., … Berger, M. Y. (2017). Use of laboratory markers in addition to symptoms for diagnosis of inflammatory bowel disease in children: A meta-analysis of individual patient data. JAMA Pediatrics, 171(10), 984-991. doi: 10.1001/jamapediatrics.2017.1736

Lopez, R. N., Evans, H. M., Appleton, L., Bishop, J., Chin, S., Mouat, S., Gearry, R. B., & Day, A. S. (2017). Point prevalence of pediatric inflammatory bowel disease in New Zealand in 2015: Initial results from the PINZ study. Inflammatory Bowel Diseases, 23(8), 1418-1424. doi: 10.1097/mib.0000000000001138

Nightingale, S., Storman, M. O., O'Loughlin, E. V., Shun, A., Thomas, G., Benchimol, E. I., Day, A. S., … Ng, V. L. (2017). Early posthepatoportoenterostomy predictors of native liver survival in biliary atresia. Journal of Pediatric Gastroenterology & Nutrition, 64(2), 203-209. doi: 10.1097/mpg.0000000000001289

Wall, C. L., Gearry, R. B., & Day, A. S. (2017). Treatment of active Crohn's disease with exclusive and partial enteral nutrition: A pilot study in adults. Inflammatory Intestinal Diseases, 2(4), 219-227. doi: 10.1159/000489630

Andre, M., & Day, A. S. (2016). Causes of prolonged jaundice in infancy: 3-year experience in a tertiary paediatric centre. New Zealand Medical Journal, 129(1429), 14-21. Retrieved from https://www.nzma.org.nz/journal

Day, A. S., Hamilton, D., Leach, S. T., & Lemberg, D. A. (2016). Inflammatory markers in children with newly diagnosed inflammatory bowel disease. Journal of Gastroenterology & Hepatology Research, 5(4), 2132-2135. doi: 10.17554/j.issn.2224-3992.2016.05.647

De Voogd, F. A. E., Gearry, R. B., Mulder, C. J., & Day, A. S. (2016). Osteoprotegerin: A novel biomarker for inflammatory bowel disease and gastrointestinal carcinoma. Journal of Gastroenterology & Hepatology, 31, 1386-1392. doi: 10.1111/jgh.13324

Kaakoush, N. O., Thomas, D. S., Ruzayqat, M. M., Lynch, D., Leach, S. T., Lemberg, D. A., Day, A. S., & Mitchell, H. M. (2016). Campylobacter concisus utilizes blood but not short chain fatty acids despite showing associations with Firmicutes taxa. Microbiology, 162(8), 1388-1397. doi: 10.1099/mic.0.000328

Nielsen, S., Needham, B., Leach, S. T., Day, A. S., Jaffe, A., Thomas, T., & Ooi, C. Y. (2016). Disrupted progression of the intestinal microbiota with age in children with cystic fibrosis. Scientific Reports, 6, 24857. doi: 10.1038/srep24857

Su, H. Y., Gupta, V., Day, A. S., & Gearry, R. B. (2016). Rising incidence of inflammatory bowel disease in Canterbury, New Zealand. Inflammatory Bowel Diseases, 22(9), 2238-2244. doi: 10.1097/mib.0000000000000829

Wright, E. K., Kamm, M. A., De Cruz, P., Hamilton, A. L., Ritchie, K. J., Keenan, J. I., … Burgess, L., Aitchison, A., … Day, A. S., & Gearry, R. B. (2016). Comparison of fecal inflammatory markers in Crohn's disease. Inflammatory Bowel Diseases, 22(5), 1086-1094. doi: 10.1097/mib.0000000000000671

Alhagamhmad, M. H., Leach, S. T., Lemberg, D. A., & Day, A. S. (2015). Changing patterns in the epidemiology of Crohn disease. Journal of Gastroenterology & Hepatology Research, 4(11), 1805-1809. doi: 10.17554/j.issn.2224-3992.2015.04.550

Boon, G. J. A. M., Day, A. S., Mulder, C. J., & Gearry, R. B. (2015). Are faecal markers good indicators of mucosal healing in inflammatory bowel disease? World Journal of Gastroenterology, 21(40), 11469-11480. doi: 10.3748/wjg.v21.i40.11469

Bowden, M. R., Storman, M., Hardikar, W., Ee, L. C., Krishnan, U., Carmody, D., … Day, A. S., … Hazell, P. (2015). Family adjustment and parenting stress when an infant has serious liver disease: The Australian experience. Journal of Pediatric Gastroenterology & Nutrition, 60, 717-722. doi: 10.1097/mpg.0000000000000742

Dhaliwal, J., Leach, S., Katz, T., Nahidi, L., Pang, T., Lee, J. M., … Day, A. S., … Ooi, C. Y. (2015). Intestinal inflammation and impact on growth in children with cystic fibrosis. Journal of Pediatric Gastroenterology & Nutrition, 60(4), 521-526. doi: 10.1097/mpg.0000000000000683

Falvey, J. D., Hoskin, T., Meijer, B., Ashcroft, A., Walmsley, R., Day, A. S., & Gearry, R. B. (2015). Disease activity assessment in IBD: Clinical indices and biomarkers fail to predict endoscopic remission. Inflammatory Bowel Diseases, 21, 824-831. doi: 10.1097/mib.0000000000000341

Day, A. S., & Robinson, S. J. (2013). Complementary and alternative medicine use in children with inflammatory bowel disease. In K. R. Carter & G. E. Murphy (Eds.), Alternative medicine: Practices, health benefits and controversies. (pp. 107-116). Nova Science.

Beasley, S., & Day, A. (2012). Abdominal pain and vomiting. In M. South & D. Isaacs (Eds.), Practical paediatrics. (7th ed.) (pp. 706-714). Edinburgh, UK: Churchill Livingstone.

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