Dr Simone Bayer

2026

Journal - Research Article

Dowrick, J. M., Roy, N. C., Carco, C., James, S. C., Heenan, P. E., Frampton, C. M. A., … Keenan, J. I., … Bayer, S. B., … Gearry, R. B., & Angeli-Gordon, T. R. (2026). Integrated multi-omic and symptom clustering reveals lower-gastrointestinal disorders of gut-brain interaction heterogeneity. Gut Microbes, 18(1), 2604871. doi: 10.1080/19490976.2025.2604871

Journal - Research Other

Maggo, J., Ng, H. M., Bayer, S. B., Wall, C. L., Hoad, C. L., Marciani, L., … Conner, T., Frampton, C., … Roy, N. C., & Gearry, R. B. (2026). Normalization of gastrointestinal symptoms in adults with constipation with daily green kiwifruit consumption: Protocol for an open-label intervention study. JMIR Research Protocols, 15, e75286. doi: 10.2196/75286

2025

Journal - Research Other

Ombasa, L., Miller, J., Ware, L., Abbotts-Holmes, H., Tang, J., Gasser, O., … Bayer, S., Kemp, R., Costello, R., Highton, A., … Schultz, M., Frampton, C., Gearry, R., … Roy, N. (2025). Impact of mānuka honey on symptoms and quality of life in individuals with functional dyspepsia: Protocol for a feasibility randomized controlled trial. JMIR Research Protocols, 14, e66417. doi: 10.2196/66417

Conference Contribution - Published proceedings: Abstract

Bayer, S., Sies, C., King, R., & Gearry, R. (2025). Evaluation of different approaches to identify possible bile acid malabsorption in an existing disorder of gut-brain interaction cohort. Journal of Gastroenterology & Hepatology, 40(Suppl. 1), (pp. 16). doi: 10.1111/jgh.16899

2024

Journal - Research Other

Ong, S. P., Miller, J. C., McNabb, W. C., Gearry, R. B., Ware, L. M., Mullaney, J. A., … Bayer, S. B., Frampton, C. M. A., & Roy, N. C. (2024). Study protocol for a randomized controlled trial investigating the effects of the daily consumption of ruminant milk on digestive comfort and nutrition in older women: The YUMMI study. Nutrients, 16, 4215. doi: 10.3390/nu16234215

Silk, E. T., Bayer, S. B., Foster, M., Roy, N. C., Taylor, M. W., Vatanen, T., & Gearry, R. B. (2024). Advancing microbiome research in Māori populations: Insights from recent literature exploring the gut microbiomes of underrepresented and Indigenous peoples. mSystems, 9(11), e00909-24.. doi: 10.1128/msystems.00909-24

Ng, H. M., Maggo, J., Wall, C. L., Bayer, S. B., McNabb, W. C., Mullaney, J. A., Foster, M., … Frampton, C., Gearry, R. B., & Roy, N. C. (2024). Effects of defatted rice bran-fortified bread on the gut microbiota composition of healthy adults with low dietary fiber intake: Protocol for a crossover randomized controlled trial. JMIR Research Protocols, 13, e59227. doi: 10.2196/59227

Dowrick, J. M., Roy, N. C., Bayer, S., Frampton, C. M. A., Talley, N. J., Gearry, R. B., & Angeli-Gordon, T. R. (2024). Unsupervised machine learning highlights the challenges of subtyping disorders of gut-brain interaction. Neurogastroenterology & Motility, 36, e14898. doi: 10.1111/nmo.14898

Conference Contribution - Published proceedings: Abstract

Maggo, J., Ng, H. M., Bayer, S. B., Wall, C. L., Hoad, C., Marciani, L., … Conner, T., Frampton, C., … Roy, N. C., & Gearry, R. B. (2024). Impact of green kiwifruit on adults with constipation. Canadian Journal of Dietetic Practice & Research / Revue canadienne de la pratique et de la recherche en diététique, 85(3), (pp. 355). doi: 10.3148/cjdpr-2024-020

Maggo, J., Ng, H. M., Bayer, S. B., Roy, N. C., & Gearry, R. B. (2024). Impact of fiber-rich foods on colonic transit and fermentation profile. Canadian Journal of Dietetic Practice & Research / Revue canadienne de la pratique et de la recherche en diététique, 85(3), (pp. 354). doi: 10.3148/cjdpr-2024-020

2023

Journal - Research Article

Peeters, W. M., Gram, M., Dias, G. J., Vissers, M. C. M., Hampton, M. B., Dickerhof, N., Bekhit, A. E., … Bayer, S., … Sheard, P. W., Danielson, K. M., … Cornwall, J., & Rowlands, D. S. (2023). Changes to insulin sensitivity in glucose clearance systems and redox following dietary supplementation with a novel cysteine-rich protein: A pilot randomized controlled trial in humans with type-2 diabetes. Redox Biology, 67, 102918. doi: 10.1016/j.redox.2023.102918

Simon, M. H., Heenan, P. E., Frampton, C., Bayer, S., Keenan, J. I., de Boer, N. K., Roy, N. C., … Gearry, R. B. (2023). Economic living standard and abdominal pain mediate the association between functional gastrointestinal disorders and depression or anxiety. Neurogastroenterology & Motility, 35, e14465. doi: 10.1111/nmo.14465

Conference Contribution - Published proceedings: Abstract

Ng, H. M., Maggo, J., Wall, C., Bayer, S., Roy, N. C., & Gearry, R. (2023). Dietary fibre intakes of two cohorts of New Zealand adults with and without constipation. Proceedings of the Annual Scientific Meeting of the New Zealand and Australian Nutrition Societies: Nutrition and Wellbeing in Oceania. (pp. 109). Retrieved from https://nsnzconference.org.nz/

Bayer, S. (2023). Clinical research network for human nutrition and digestive health. Proceedings of the New Zealand Institute of Food Science & Technology (NZIFST) Conference: Food in a Changing World. (pp. 30). Retrieved from https://nzifst.org.nz

Conference Contribution - Verbal presentation and other Conference outputs

Roy, N. C., Bayer, S., Maggo, J., Ng, H. M., Wall, C., Carco, C., … Gearry, R. B. (2023, August). Dietary interventions, digestive physiology, and microbiome modulation. Verbal presentation at the Queenstown Molecular Biology (QMB) Microbiomes Satellite, Queenstown, New Zealand.

Ombasa, L., Miller, J. C., Ware, L., Abbotts-Holmes, H., Gearry, R. B., Bayer, S. B., Schultz, M., … Highton, A. J., Costello, R. M., Frampton, C. M. A., … Houghton, L. A., & Roy, N. C. (2023, August). Study of mānuka honey for digestive health (SOOTHE). Verbal presentation at the Kai mō Aotearoa Food Science Meeting [Queenstown Molecular Biology (QMB) Satellite], Queenstown, New Zealand.

Silk, E. T., Bayer, S. B., Roy, N. C., Taylor, M. W., Foster, M., Vatanen, T., & Gearry, R. B. (2023, August). Diet and disparities in shaping Indigenous microbiomes: The unexplored Māori gut microbiome. Verbal presentation at the Queenstown Molecular Biology (QMB) Microbiomes Satellite, Queenstown, New Zealand.

2022

Journal - Research Article

Bayer, S. B., Heenan, P., Frampton, C., Wall, C. L., Drummond, L. N., Roy, N. C., & Gearry, R. B. (2022). Two gold kiwifruit daily for effective treatment of constipation in adults: A randomized clinical trial. Nutrients, 14, 4146. doi: 10.3390/nu14194146

Journal - Research Other

Bayer, S. B., Frampton, C. M., Gearry, R. B., & Barbara, G. (2022). Habitual green kiwifruit consumption is associated with a reduction in upper gastrointestinal symptoms: A systematic scoping review. Advances in Nutrition, 13, 846-856. doi: 10.1093/advances/nmac025

2021

Journal - Research Article

Dachs, G. U., Gandhi, J., Wohlrab, C., Carr, A. C., Morrin, H. R., Pullar, J. M., Bayer, S. B., Eglinton, T. W., Robinson, B. A., & Vissers, M. C. M. (2021). Vitamin C administration by intravenous infusion increases tumor ascorbate content in patients with colon cancer: A clinical intervention study. Frontiers in Oncology, 10, 600715. doi: 10.3389/fonc.2020.600715

Conference Contribution - Published proceedings: Abstract

Diep Pham, H. T., Wall, C., Bayer, S., Blatchford, P., & Gearry, R. (2021). An increase in Mediterranean dietary score, through SunGold^® Kiwifruit, potentially improves mental wellbeing. Current Developments in Nutrition, 5(Suppl. 2), (pp. 401). doi: 10.1093/cdn/nzab038_013

2020

Journal - Research Article

Heenan, P., Creemers, R. H., Sharma, S., Keenan, J., Bayer, S., Young, W., … Skidmore, P. M., … Roy, N., Gearry, R. B., & COMFORT Cohort Collaborators. (2020). Cohort profile: The Christchurch IBS cOhort to investigate Mechanisms FOr gut Relief and improved Transit (COMFORT). Inflammatory Intestinal Diseases, 5(3), 132-143. doi: 10.1159/000508160

Journal - Research Other

Heenan, P. E., Keenan, J. I., Bayer, S., Simon, M., & Gearry, R. B. (2020). Irritable bowel syndrome and the gut microbiota. Journal of the Royal Society of New Zealand, 50(3), 470-490. doi: 10.1080/03036758.2019.1695635

Conference Contribution - Verbal presentation and other Conference outputs

Bayer, S. (2020, November). COMFORT-PSYKI: Psyllium and SunGold© kiwifruit are equally effective treatments of constipation in adults. Verbal presentation at the New Zealand Society of Gastroenterology & NZNO Gastroenterology Nurses' College (NZgNC) Gastro One Day Meeting, Auckland, New Zealand.

2018

Journal - Research Article

Pullar, J. M., Bayer, S., & Carr, A. C. (2018). Appropriate handling, processing and analysis of blood samples is essential to avoid oxidation of vitamin C to dehydroascorbic acid. Antioxidants, 7(2), 29. doi: 10.3390/antiox7020029

Bayer, S. B., Gearry, R. B., & Drummond, L. N. (2018). Putative mechanisms of kiwifruit on maintenance of normal gastrointestinal function. Critical Reviews in Food Science & Nutrition, 58(14), 2432-2452. doi: 10.1080/10408398.2017.1327841

2017

Journal - Research Article

Carr, A. C., Rosengrave, P. C., Bayer, S., Chambers, S., Mehrtens, J., & Shaw, G. M. (2017). Hypovitaminosis C and vitamin C deficiency in critically ill patients despite recommended enteral and parenteral intakes. Critical Care, 21, 300. doi: 10.1186/s13054-017-1891-y

2016

Journal - Research Article

Bayer, S. B., Low, F. M., Hampton, M. B., & Winterbourn, C. C. (2016). Interactions between peroxiredoxin 2, hemichrome and the erythrocyte membrane. Free Radical Research, 50(12), 1329-1339. doi: 10.1080/10715762.2016.1241995

2015

Journal - Research Article

Bayer, S. B., Hampton, M. B., & Winterbourn, C. C. (2015). Accumulation of oxidized peroxiredoxin 2 in red blood cells and its prevention. Transfusion, 55(8), 1909-1918. doi: 10.1111/trf.13039

2014

Conference Contribution - Verbal presentation and other Conference outputs

Bayer, S. (2014, July). Accumulation of oxidised peroxiredoxin 2 in stored red blood cells. Verbal presentation at the Oxygen Theme Meeting, Christchurch, New Zealand.

2013

Journal - Research Article

Bayer, S. B., Maghzal, G., Stocker, R., Hampton, M. B., & Winterbourn, C. C. (2013). Neutrophil-mediated oxidation of erythrocyte peroxiredoxin 2 as a potential marker of oxidative stress in inflammation. FASEB Journal, 27(8), 3315-3322. doi: 10.1096/fj.13-227298

Conference Contribution - Poster Presentation (not in published proceedings)

Bayer, S. B., Maghzal, G., Stocker, R., Hampton, M. B., & Winterbourn, C. C. (2013, August). Neutrophil-mediated oxidation of erythrocyte peroxiredoxin 2 as a potential marker of oxidative stress in inflammation. Poster session presented at the Queenstown Molecular Biology (QMB) Meetings, Queenstown, New Zealand.

2012

Conference Contribution - Verbal presentation and other Conference outputs

Hampton, M., Bayer, S., Moran, S., Maghzal, G., Stocker, R., Choe, C. F., Lunt, H., Chambers, S., Peskin, A., & Winterbourn, C. (2012, November). Peroxiredoxins as biomarkers of oxidative stress. Verbal presentation at the Gravida Annual Science Symposium: What Makes the Best Start for a Healthy Life? Palmerston North, New Zealand.