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Research interests

  • Cellular mechanisms and regulation of ion transport in the mammalian intestine
  • Intestinal secretion of mucus and bicarbonate
  • The role of NOD2 mutations in Crohn's disease
  • The interaction of bacteria with the intestinal epithelium.

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Projects

  • The effect of inflammation on intestinal bicarbonate and mucus secretion
  • The impact of NOD2 mutations associated with Crohn's disease on the properties of the intestinal epithelium
  • The effect of NOD2 mutations on the response of the intestinal epithelium to commensal bacteria
  • The effect of outer membrane vesicles from gram-negative bacteria on intestinal epithelial cells.

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Current funding

  • University of Otago Research Grant
  • Otago Medical Research Foundation
  • Anderson Trust
  • Gastroenterology Society
  • Dean's Fund University of Otago

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Collaborators

  • Associate Professor Michael Schultz, Gastroenterology section, Department of Medicine, Dunedin School of Medicine, University of Otago
  • Associate Professor Ros Kemp, Department of Microbiology and Immunology, University of Otago
  • Dr Jacqui Keenan, Department of Surgery, University of Otago, Christchurch

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Teaching

  • Cellular Physiology
  • Gastrointestinal Physiology
  • Epithelial Transport

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Selected publications

Angus, H. C. K., Aluzaite, K., Butt, G. A., Schultz, M., & Kemp, R. A. (2018, August). Novel investigation of Crohn's disease T cell phenotypes and functionality in an in vitro human colonoid model. Verbal presentation at the Queenstown Molecular Biology (QMB) and Australasian Society for Immunology New Zealand Branch (ASI-NZ) Joint Meeting, Queenstown, New Zealand.

Chao, P.-C., & Butt, A. G. (2017). cAMP-dependent secretagogues stimulate the NaHCO3 cotransporter in the villous epithelium of the brushtail possum, Trichosurus vulpecula. Journal of Comparative Physiology B, 187(7), 1019-1028. doi: 10.1007/s00360-017-1063-z

Samuel, G., Gadeock, S., Schultz, M., & Butt, G. (2017). The differential response of human epithelial derived colonic organoids to TLR agonists. FASEB Journal, 31(Suppl. 1), 1049.6. [Abstract]

Gadeock, S., Schultz, M., & Butt, A. (2017). Increased permeability is an inherent defect in the colonic epithelium of Crohn’s disease patients. New Zealand Medical Journal, 130(1460), (pp. 95-96). Retrieved from http://www.nzma.org.nz/journal

Angus, H., Norton, S., Dunn, E., Aluzaite, K., Gadeock, S., Butt, G., & Kemp, R. (2017). Development of in vitro models for human Crohn's disease. Proceedings of the University of Otago Student Research Symposium: Te Wānaka Rakahau: Ākoka. (pp. 4). Retrieved from http://www.otago.ac.nz/graduate-research/scholarships/otago643219.html

Angus, H., Aluzaite, K., Schultz, M., Butt, G., & Kemp, R. (2017, July). Investigation into T cell-mediated Crohn's disease. Verbal presentation at the New Zealand Branch of the Australasian Society for Immunology (NZ ASI) Annual Scientific Meeting, Christchurch, New Zealand.

Dunn, E. T. J., Taylor, E. S., Stebbings, S., Schultz, M., Butt, A. G., & Kemp, R. A. (2016). Distinct immune signatures in the colon of Crohn's disease and ankylosing spondylitis patients in the absence of inflammation. Immunology & Cell Biology, 94(5), 421-429. doi: 10.1038/icb.2015.112

Alsop, T.-A., McLeod, B. J., & Butt, A. G. (2016). Variations in epithelial Na+ transport and epithelial sodium channel localisation in the vaginal cul-de-sac of the brushtail possum, Trichosurus vulpecula, during the oestrous cycle. Reproduction, Fertility & Development, 28(3), 328-336. doi: 10.1071/RD13277

van Hout, I., Rodrigues, E., Slobbe, L., Schultz, M., & Butt, G. (2016). The effects of bacterial components on colonic stem cell proliferation. New Zealand Medical Journal, 129(1441), (pp. 107-108). Retrieved from http://www.nzma.org.nz/journal

Rodrigues, E., Schultz, M., & Butt, A. G. (2016). Bacteria modulate goblet cell development in the colon: A mechanism compromised in Crohn’s disease. New Zealand Medical Journal, 129(1442), (pp. 97-98). Retrieved from https://www.nzma.org.nz/journal

Gadeock, S., Schultz, M., & Butt, G. (2016). TNF-α and IFN-γ induce a biphasic change in the distribution and expression of tight junction proteins in human colonic enteroids. FASEB Journal, 30(1, Suppl.), 1250.2. Retrieved from http://www.fasebj.org/content/30/1_Supplement/1250.2.abstract

Schultz, M., Lai, C. C., Lindstrom, A. L., Stein, K., Donaldson, G., Thompson-Fawcett, M., & Butt, A. G. (2015). Aggravation of established colitis in specific pathogen-free IL-10 knockout mice by restraint stress is not mediated by increased colonic permeability. Journal of Crohn's & Colitis, 9(9), 754-762. doi: 10.1093/ecco-jcc/jjv098

Rodrigues, E., Slobbe, L., Schultz, M., & Butt, G. (2015). Chronic exposure to microbial stimuli affects the development of the intestinal epithelium in human colonic enteroids. FASEB Journal, 29(1, Suppl.), 999.7. Retrieved from http://www.fasebj.org/content/29/1_Supplement/999.7.abstract

van Hout, I., Rodrigues, E., Slobbe, L., Schultz, M., & Butt, A. G. (2015, August-September). Modulation of colonic stem cell proliferation by bacterial components. Poster session presented at the Queenstown Molecular Biology (QMB) Meetings, Queenstown, New Zealand.

Rodrigues, E., Slobbe, L., Samuel, G., Gadeock, S., Schultz, M., & Butt, A. G. (2015, August-September). Chronic exposure to LPS modified lineage development via the TLR4 dependent pathway in human colonic enteroids. Poster session presented at the Queenstown Molecular Biology (QMB) Meetings, Queenstown, New Zealand.

Gadeock, S., Schultz, M., & Butt, A. G. (2015, August-September). TNF-α induces a biphasic change in the expression and distribution of tight junction proteins in human colonic enteroids. Poster session presented at the Queenstown Molecular Biology (QMB) Meetings, Queenstown, New Zealand.

Samuel, G., Rodrigues, E., Slobbe, L., Schultz, M., & Butt, A. G. (2015, August-September). The expression of functional toll like receptors in human colonic organoids. Poster session presented at the Queenstown Molecular Biology (QMB) Meetings, Queenstown, New Zealand.

Butt, G. (2015, August-September). Organoids: A new kid on the block. Verbal presentation at the Queenstown Molecular Biology (QMB) Meetings, Queenstown, New Zealand.

Fan, S., Schultz, M., & Butt, G. (2014). Inflammation reduces the activity of the NaHCO3 cotransporter, NBCe1, in the surface cells of the proximal colon of IL10 knockout mice. FASEB Journal, 28(1, Suppl.), 908.1. [Abstract]

Rodrigues, E., Slobbe, L., Schultz, M., & Butt, G. (2014). Spontaneous maturation of human colonic organoids. FASEB Journal, 28(1, Suppl.), 1119.2. [Abstract]

Braun, J., Keenan, J., Schultz, M., & Butt, G. (2014, November). Polarization of Caco2 cells impedes uptake of outer membrane vesicles. Poster session presented at the New Zealand Society of Gastroenterology & New Zealand Nurses Organisation Gastroenterology Section Annual Scientific Meeting, Auckland, New Zealand.

Fan, L., Schultz, M., & Butt, G. (2014, November). Inflammation reduces the activity of the NaHCO3 cotransporter, NBCe1, in the surface cells of the proximal colon of IL10-/- mice. Poster session presented at the New Zealand Society of Gastroenterology & New Zealand Nurses Organisation Gastroenterology Section Annual Scientific Meeting, Auckland, New Zealand.

Rodrigues, E., Slobbe, L., Schultz, M., & Butt, A. G. (2014, November). Chronic exposure to LPS induces goblet cell differentiation in human colonic organoids. Poster session presented at the New Zealand Society of Gastroenterology & New Zealand Nurses Organisation Gastroenterology Section Annual Scientific Meeting, Auckland, New Zealand.

Samuel, M., Rodrigues, E., Slobbe, L., Schultz, M., & Butt, G. (2014, November). The expression of toll like receptors in human colonic organoids, three-dimensional cultures of the colonic epithelium. Poster session presented at the New Zealand Society of Gastroenterology & New Zealand Nurses Organisation Gastroenterology Section Annual Scientific Meeting, Auckland, New Zealand.

Gadeock, S., Schultz, M., & Butt, G. (2014, November). Colonoids: A model of the colonic epithelium in IBD. Poster session presented at the New Zealand Society of Gastroenterology & New Zealand Nurses Organisation Gastroenterology Section Annual Scientific Meeting, Auckland, New Zealand.

Other Research Output

Butt, G. (2011, May). Unraveling the role of CFTR in intestinal bicarbonate secretion. University of Otago Department of Microbiology & Immunology Seminar, Dunedin, New Zealand. [Department Seminar].

Butt, G. (2011, March). A novel cellular Cl- conductance modulates Na+ absorption in the proximal colon of the possum. University of Otago Department of Physiology Seminar, Dunedin, New Zealand. [Department Seminar].

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Chapter in Book - Research

Butt, A. G., Mills, R. G., & Macknight, A. (1999). Digestive System. In J. J. Bray, P. A. Cragg, A. D. C. Macknight & R. G. Mills (Eds.), Lecture Notes on Human Physiology. (pp. 468-511). London: Blackwell Science.

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Journal - Research Article

Chao, P.-C., & Butt, A. G. (2017). cAMP-dependent secretagogues stimulate the NaHCO3 cotransporter in the villous epithelium of the brushtail possum, Trichosurus vulpecula. Journal of Comparative Physiology B, 187(7), 1019-1028. doi: 10.1007/s00360-017-1063-z

Dunn, E. T. J., Taylor, E. S., Stebbings, S., Schultz, M., Butt, A. G., & Kemp, R. A. (2016). Distinct immune signatures in the colon of Crohn's disease and ankylosing spondylitis patients in the absence of inflammation. Immunology & Cell Biology, 94(5), 421-429. doi: 10.1038/icb.2015.112

Alsop, T.-A., McLeod, B. J., & Butt, A. G. (2016). Variations in epithelial Na+ transport and epithelial sodium channel localisation in the vaginal cul-de-sac of the brushtail possum, Trichosurus vulpecula, during the oestrous cycle. Reproduction, Fertility & Development, 28(3), 328-336. doi: 10.1071/RD13277

Schultz, M., Lai, C. C., Lindstrom, A. L., Stein, K., Donaldson, G., Thompson-Fawcett, M., & Butt, A. G. (2015). Aggravation of established colitis in specific pathogen-free IL-10 knockout mice by restraint stress is not mediated by increased colonic permeability. Journal of Crohn's & Colitis, 9(9), 754-762. doi: 10.1093/ecco-jcc/jjv098

Schultz, M., Dunn, E., Taylor, E., Butt, G. A., & Kemp, R. (2013). The Gut Map Project: T cell distribution in inflammation of the gut. Journal of Gastroenterology & Hepatology, 28(Suppl. 3), 588. doi: 10.1111/jgh.12363_2

Hamilton, K. L., & Butt, A. G. (2013). Glucose transport into everted sacs of the small intestine of mice. Advances in Physiology Education, 37(4), 415-426. doi: 10.1152/advan.00017.2013

Fan, S., Harfoot, N., Bartolo, R. C., & Butt, A. G. (2012). CFTR is restricted to a small population of high expresser cells that provide a forskolin-sensitive transepithelial Cl- conductance in the proximal colon of the possum, Trichosurus vulpecula. Journal of Experimental Biology, 215, 1218-1230. doi: 10.1242/jeb.061176

Al-Salami, H., Butt, G., Tucker, I., Golocorbin-Kon, S., & Mikov, M. (2012). Probiotics decreased the bioavailability of the bile acid analog, monoketocholic acid, when coadministered with gliclazide, in healthy but not diabetic rats. European Journal of Drug Metabolism & Pharmacokinetics, 37(2), 99-108. doi: 10.1007/s13318-011-0060-y

Gill, M., Bartolo, R. C., Demmers, K., Harfoot, N., Fan, S., & Butt, G. (2011). The distribution and expression of CFTR restricts electrogenic anion secretion to the ileum of the brushtail possum, Trichosurus vulpecula. Journal of Experimental Biology, 214(Pt 11), 1943-1954. doi: 10.1242/jeb.053371

Schultz, M., & Butt, G. (2010). E. coli Nissle 1917 in the treatment of inflammatory bowel disease. Practical Gastroenterology, 34(3), 11-19.

Demmers, K., Carter, D., Fan, S., Mao, P., Maqbool, N. J., McLeod, B. J., Bartolo, R. C., & Butt, A. G. (2010). Molecular and functional characterization of the cystic fibrosis transmembrane conductance regulator from the Australian common brushtail possum, Trichosurus vulpecula. Journal of Comparative Physiology B, 180(4), 545-561. doi: 10.1007/s00360-009-0433-6

Ke, Y., Butt, A. G., Swart, M., Liu, Y.-f., & McDonald, F. J. (2010). COMMD1 down-regulates the epithelial sodium channel through Nedd4-2. American Journal of Physiology: Renal Physiology, 298, F1445-F1456. doi: 10.1152/ajprenal.00257.2009

Schep, L. J., Temple, W. A., Butt, G. A., & Beasley, D. M. (2009). Ricin as a weapon of mass terror: Separating fact from fiction. Environment International, 35(8), 1267-1271. doi: 10.1016/j.envint.2009.08.004

Al-Salami, H., Butt, G., Tucker, I., Fawcett, J. P., Golocorbin-Kon, S., Mikov, I., & Mikov, M. (2009). Gliclazide reduces MKC intestinal transport in healthy but not diabetic rats. European Journal of Drug Metabolism & Pharmacokinetics, 34(1), 43-50.

Bartolo, R. C., Harfoot, N., Gill, M., Demmers, K., McLeod, B., & Butt, A. G. (2009). Electrogenic Cl secretion does not occur in the ileum of the Australian common brushtail possum, Trichosurus vulpecula, due to low levels of expression of the NaK2CL cotransporter, NKCC1. Journal of Comparative Physiology B, 179(8), 997-1010. doi: 10.1007/s00360-009-0379-8

Bartolo, R. C., Harfoot, N., Gill, M., McLeod, B. J., & Butt, A. G. (2009). Secretagogues stimulate electrogenic HCO3- secretion in the ileum of the brushtail possum, Trichosurus vulpecula: Evidence for the role of a Na+/HCO3- cotransporter. Journal of Experimental Biology, 212, 2645-2655. doi: 10.1242/jeb.028928

Al-Salami, H., Butt, G., Tucker, I., & Mikov, M. (2008). Influence of the semisynthetic bile acid MKC on the ileal permeation of gliclazide in vitro in healthy and diabetic rats treated with probiotics. Methods & Findings in Experimental & Clinical Pharmacology, 30(2), 107-113.

Al-Salami, H., Butt, G., Tucker, I., Skrbic, R., Golocorbin-Kon, S., & Mikov, M. (2008). Probiotic treatment proceeded by a single dose of bile acid and gliclazide exert the most hypoglycemic effect in type 1 diabetic rats. Medical Hypotheses & Research, 4(2), 93-101.

Al-Salami, H., Butt, G., Tucker, I., Skrbic, R., Golocorbin-Kon, S., & Mikov, M. (2008). Probiotic pre-treatment reduces gliclazide permeation (ex vivo) in healthy rats but increases it in diabetic rats to the level seen in untreated healthy rats. Archives of Drug Information, 1, 35-41. doi: 10.1111/j.1753-5174.2008.00006.x

Al-Salami, H., Butt, G., Fawcett, J. P., Tucker, I. G., Golocorbin-Kon, S., & Mikov, M. (2008). Probiotic treatment reduces blood glucose levels and increases systemic absorption of gliclazide in diabetic rats. European Journal of Drug Metabolism & Pharmacokinetics, 33(2), 101-106.

Al-Salami, H., Butt, G., Tucker, I., & Mikov, M. (2008). Influence of the semisynthetic bile acid (MKC) on the ileal permeation of gliclazide in healthy and diabetic rats. Pharmacological Reports, 60, 532-541.

Wen, J. Y., McLeod, B. J., Tucker, I. G., Davies, N. M., Ledger, R., & Butt, A. G. (2007). Enhancing absorption of fluorescein and LHRH across hindgut epithelia in a marsupial, the common brushtail possum Trichosurus Vulpecula. Journal of Pharmaceutical Sciences, 96(9), 2262-2273.

Schultz, M., & Butt, A. G. (2007). Methodological aspects in probiotic research: A brief review with an emphasis on epithelial barrier function. International Journal of Probiotics & Prebiotics, 2(2/3), 85-96.

McLeod, B. J., Zhang, H., Huang, L., Thompson, E. G., Butt, A. G., & Tucker, I. G. (2005). An in situ single-pass perfusion model for assessing absorption across the intestinal mucosa of the brushtail possum. New Zealand Veterinary Journal, 53(4), 234-241.

Clunes, M. T., Butt, A. G., & Wilson, S. M. (2004). A glucocorticoid-induced Na+ conductance in human airway epithelial cells identified by perforated patch recording. Journal of Physiology, 557(3), 809-819.

Wen, J., Ledger, R., Butt, A. G., McLeod, B., Davies, N. M., & Tucker, I. G. (2002). Inhibition of proteolysis in luminal extracts from the intestine of the brushtail possum. Journal of Pharmacy & Pharmacology, 54, 1365-1372.

Butt, A. G., Mathieson, S., & McLeod, B. (2002). Aldosterone does not regulate amiloride-sensitive Na+ transport in the colon of the Australian common brushtail possum, Trichosurus vulpecula. Journal of Comparative Physiology B, 172, 519-527.

Hamilton, K. L., Butt, A. G., Cheng, S., & Carter, D. J. (2002). Methoxsalen stimulates electrogenic Cl- secretion in the mouse jejunum. Experimental Physiology, 87(4), 437-445.

Wen, J., Ledger, R., McLeod, B. J., Davies, N. M., Butt, A. G., & Tucker, I. G. (2002). Enzymatic degradation of luteinizing hormone releasing hormone (LHRH) by mucosal homogenates from the intestine of the common brushtail possum (Trichosurus vulpecula). Life Sciences, 71, 3019-3030.

Wen, J., Ledger, R., McLeod, B. J., Davies, N. M., Butt, A. G., & Tucker, I. G. (2002). Protein and peptide degradation in the intestine of the common brushtail possum (Trichosurus vulpecula). Journal of Comparative Physiology B, 172, 553-559.

Butt, A. G., Mathieson, S., & McLeod, B. (2002). Electrogenic ion transport in the intestine of the Australian common brushtail possum, Trichosurus vulpecula: Indications of novel transport patterns in a marsupial. Journal of Comparative Physiology B, 172, 495-502.

Wen, J., Davies, N. M., Ledger, R., Butt, A. G., McLeod, B., & Tucker, I. G. (2002). Isocratic liquid chromatographic assay for monitoring the degradation of luteinizing hormone releasing hormone by extracts from the gastrointestinal tract of possums. Journal of Chromatography B, 779, 221-227.

Taylor, J., Hamilton, K. L., & Butt, A. G. (2001). HCO3- potentiates the cAMP-dependent secretory response of the human distal colon through a DIDS-sensitive pathway. Pflügers Archiv: European Journal of Physiology, 442(2), 256-262.

Hope, N. M., Butt, A. G., Ross, I., Warhurst, G., Arn, M., Grigor, M. R., Lubcke, R., & Barbezat, G. O. (2001). Somatostatin (SST) enhances cAMP-dependent short-circuit current in human colon via somatostatin receptor subtype-2 (SSTR-2). Digestive Diseases & Sciences, 46(11), 2499-2503.

Arn, M., Butt, A. G., Lubcke, R., Ross, I., Grigor, M. R., Warhurst, G., & Barbezat, G. O. (2000). Somatostatin and octreotide stimulate short-circuit current in human colonic epithelium. Digestive Diseases & Sciences, 45(11), 2100-2107.

Samson, A., Hamilton, K. L., & Butt, A. G. (2000). Effect of somatostatin on electrogenic ion transport in the duodenum and colon of the mouse, Mus domesticus. Comparative Biochemistry & Physiology Part A, 125A, 459-468.

Hamilton, K. L., & Butt, A. G. (2000). The molecular basis of renal tubular transport disorders. Comparative Biochemistry & Physiology Part A, 126A, 305-321.

Hamilton, K. L., Meads, L., & Butt, A. G. (1999). 1-EBIO stimulates C1 secretion by activating a basolateral K channel in the mouse jejunum. Pflügers Archiv: European Journal of Physiology, 439, 158-166.

Butt, A. G., Bowler, J. M., & McLaughlin, C. W. (1998). Villus and crypt cell composition in the secreting mouse jejunum measured with x-ray microanalysis. Journal of Membrane Biology, 162, 17-29.

Schep, L., Tucker, I. G., Young, G., Ledger, R., & Butt, A. G. (1998). Permeability of the salmon (Oncorhynchus tshawytscha) posterior intestine in vivo to two hydrophilic markers. Journal of Comparative Physiology B, 168, 562-568.

Butt, A. G., & Hamilton, K. L. (1998). Ion channels in isolated mouse jejunal crypts. Pflügers Archiv: European Journal of Physiology, 435, 528-538.

Schep, L., Tucker, I. G., Young, G., & Butt, A. G. (1997). Regional permeability differences between the proximal and distal portions of the isolated salmonid posterior intestine. Journal of Comparative Physiology B, 167(5), 370-377.

Schep, L., Tucker, I., Young, G., Ledger, R., & Butt, A. G. (1996). Proteolytic activity in the gastrointestinal tract of salmon. Australian Journal of Hospital Pharmacy, 26.

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Journal - Research Other

Schultz, M., & Butt, A. G. (2012). Is the north to south gradient in inflammatory bowel disease a global phenomenon? Expert Review of Gastroenterology & Hepatology, 6(4), 445-447. doi: 10.1586/egh.12.31

Schultz, M., Roberts, R. L., & Butt, A. G. (2010). Understanding probiotic treatment strategies in inflammatory bowel disease, with a special emphasis on the intestinal barrier. European Gastroenterology & Hepatology Review, 6(1), 58-65.

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Journal - Professional & Other Non-Research Articles

Schultz, M., & Butt, G. (2008). Probiotic therapy in Inflammatory Bowel Disease: Why they should work! Probiotica, 24, 4-6.

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Major Reviews - prior to 2003

Schep, L., Tucker, I. G., Young, G., Ledger, R., & Butt, A. G. (1999). Controlled release opportunities for oral peptide delivery in aquaculture. Journal of Controlled Release, 59.

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Conference Contribution - Published proceedings: Full paper

Wen, J., Davies, N. M., Ledger, R., Butt, A. G., McLeod, B., & Tucker, I. G. (2001). Enzymatic barriers in the possum to intestinal absorption of proteins and peptides. Proceedings of the 28th International Symposium on Controlled Release Bioactive Materials. CD ROM, (pp. 6214). San Diego, California, USA: Controlled Release Society. [Full Paper]

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Conference Contribution - Published proceedings: Abstract

Samuel, G., Gadeock, S., Schultz, M., & Butt, G. (2017). The differential response of human epithelial derived colonic organoids to TLR agonists. FASEB Journal, 31(Suppl. 1), 1049.6. [Abstract]

Angus, H., Norton, S., Dunn, E., Aluzaite, K., Gadeock, S., Butt, G., & Kemp, R. (2017). Development of in vitro models for human Crohn's disease. Proceedings of the University of Otago Student Research Symposium: Te Wānaka Rakahau: Ākoka. (pp. 4). Retrieved from http://www.otago.ac.nz/graduate-research/scholarships/otago643219.html

Gadeock, S., Schultz, M., & Butt, A. (2017). Increased permeability is an inherent defect in the colonic epithelium of Crohn’s disease patients. New Zealand Medical Journal, 130(1460), (pp. 95-96). Retrieved from http://www.nzma.org.nz/journal

van Hout, I., Rodrigues, E., Slobbe, L., Schultz, M., & Butt, G. (2016). The effects of bacterial components on colonic stem cell proliferation. New Zealand Medical Journal, 129(1441), (pp. 107-108). Retrieved from http://www.nzma.org.nz/journal

Gadeock, S., Schultz, M., & Butt, G. (2016). TNF-α and IFN-γ induce a biphasic change in the distribution and expression of tight junction proteins in human colonic enteroids. FASEB Journal, 30(1, Suppl.), 1250.2. Retrieved from http://www.fasebj.org/content/30/1_Supplement/1250.2.abstract

Rodrigues, E., Schultz, M., & Butt, A. G. (2016). Bacteria modulate goblet cell development in the colon: A mechanism compromised in Crohn’s disease. New Zealand Medical Journal, 129(1442), (pp. 97-98). Retrieved from https://www.nzma.org.nz/journal

Rodrigues, E., Slobbe, L., Schultz, M., & Butt, G. (2015). Chronic exposure to microbial stimuli affects the development of the intestinal epithelium in human colonic enteroids. FASEB Journal, 29(1, Suppl.), 999.7. Retrieved from http://www.fasebj.org/content/29/1_Supplement/999.7.abstract

Fan, S., Schultz, M., & Butt, G. (2014). Inflammation reduces the activity of the NaHCO3 cotransporter, NBCe1, in the surface cells of the proximal colon of IL10 knockout mice. FASEB Journal, 28(1, Suppl.), 908.1. [Abstract]

Rodrigues, E., Slobbe, L., Schultz, M., & Butt, G. (2014). Spontaneous maturation of human colonic organoids. FASEB Journal, 28(1, Suppl.), 1119.2. [Abstract]

Dunn, E., Taylor, E., Schultz, M., Butt, G., & Kemp, R. (2013). Macrophage and T cell distribution in autoimmune inflammation of the gut. Proceedings of the 43rd Australasian Society for Immunology (ASI) Annual Scientific Meeting. (pp. 86). Retrieved from http://www.asi2013.org/

Dunn, E., Taylor, E., Stebbings, S., Schultz, M., Butt, G., & Kemp, R. (2013). T cell distribution in gastrointestinal inflammatory disorders. New Zealand Medical Journal, 126(1387). Retrieved from http://www.nzma.org.nz/journal

Rodrigues, E., Slobbe, L., Schultz, M., & Butt, G. (2013). Spontaneous maturation of organoids grown from isolated human colonic biopsies. New Zealand Medical Journal, 126(1387). Retrieved from http://www.nzma.org.nz/journal

Fan, S., Schultz, M., & Butt, G. (2013). Inflammation reduces the response to forskolin and expression of the NaHCO3 cotransporter, NBCe1, in the proximal colon of IL10-/- mice. FASEB Journal, 27(Meeting Abstract Suppl.), 949.6. [Abstract]

Dunn, E., Kemp, R., Schultz, M., & Butt, G. (2013). Long-term in vitro expansion of human intestinal organoids. New Zealand Medical Journal, 126(1374). Retrieved from http://www.nzma.org.nz/journal

Lindstrom, A., Fan, S., Schultz, M., & Butt, G. (2012). The effect of Helicobacter typhlonius infection on colonic ion transport in the IL10 knockout mice. FASEB Journal, 26(Meeting Abstract Suppl.), 1109.1. [Abstract]

Dunn, E., Taylor, E., Schultz, M., Butt, G., & Kemp, R. (2012). Macrophage and T cell distribution in autoimmune inflammation of the gut. New Zealand Medical Journal, 125(1367). Retrieved from http://www.nzma.org.nz/journal

Butt, G., & Chao, P.-C. (2011). The NaHCO3 cotransporter in the possum ileum is stimulated by secretagogues. FASEB Journal, 25(Meeting Abstract Suppl.), 1065.6. [Abstract]

Lindstrom, A. L., Donaldson, G., Butt, A. G., & Schultz, M. (2011). Helicobacter typhlonius triggers colitis in IL10-/- mice without increasing intestinal permeability. New Zealand Medical Journal, 124(1347). Retrieved from http://journal.nzma.org.nz/journal/124-1347/5015/content.pdf

Braun, J. H., Butt, A. G., Keenan, J. I., & Schultz, M. (2011). Outer membrane vesicles (OMV) from intestinal bacteria as means of communication: Comparison of the effects of OMV from three different Escherichia coli strains on intestinal epithelial cells in vitro. New Zealand Medical Journal, 124(1347). Retrieved from http://journal.nzma.org.nz/journal/124-1347/5015/content.pdf

Lindstrom, A. L., Myllyluoma, E., Donaldson, G., Butt, A. G., & Schultz, M. (2010). Limited effectiveness of three different probiotics on mild colitis in IL10-/- mice. New Zealand Medical Journal, 123(1327). Retrieved from http://journal.nzma.org.nz/journal/123-1327/4492/content.pdf

Bartolo, R. C., Gill, M., McLeod, B. J., & Butt, G. (2010). Identification of K+ channels involved in electrogenic HCO3- secretion by the possum ileum. Proceedings of The Physiological Society. 19. London: Physiological Society. Retrieved from http://www.physoc.org/custom2/publications/proceedings/search/rsindex.asp

Lai, C., Lindstrom, A., Thompson-Fawcett, M., Butt, A., & Schultz, M. (2010). Psychological stress exacerbates colitis in interleukin-10 knockout mice. New Zealand Medical Journal. 123(1327). Retrieved from http://journal.nzma.org.nz/journal/123-1327/4493/content.pdf

Lai, C. C., Lindstrom, A. L., Thompson-Fawcett, M., Schultz, M., & Butt, A. G. (2009). The effects of chronic psychological stress on intestinal inflammation and permeability in IL-10 deficient mice. Proceedings of the ComBio2009 Conference. [CD-ROM] [Abstract]

Lindstrom, A. L., Lai, C. C., Schultz, M., & Butt, A. G. (2009). Indomethacin causes early onset of severe colitis in IL10-/- mice in the absence of increased intestinal permeability. Proceedings of the ComBio2009 Conference. [CD-ROM] [Abstract]

Gill, M. W., Bartolo, R. C., & Butt, A. G. (2009). The small intestine of the brushtail possum, Trichosurus vulpecula, a model of electrogenic and electroneutral HCO3- secretion. Proceedings of the ComBio2009 Conference. [CD-ROM] [Abstract]

Bartolo, R., McLeod, B., & Butt, G. (2009). Two-pore potassium channels are involved in cAMP mediated secretion in the possum ileum. Proceedings of the ComBio2009 Conference. [CD-ROM] [Abstract]

Chao, T., Hamilton, K. L., Hessian, P. A., & Butt, G. (2009). The conductive properties of exponentially dividing LNCaP prostate cancer cells. FASEB Journal, 23(Meeting Abstract Suppl.), 1000.12. [Abstract]

Gill, M., Bartolo, R. C., & Butt, A. G. (2009). Electrogenic and electroneutral HCO3- secretion in the possum ileum: A model HCO3- secreting epithelium. Proceedings of The Physiological Society. 16. London: Physiological Society. Retrieved from http://www.physoc.org/custom2/publications/proceedings/search/rsindex.asp

Bartolo, R., Gill, M., McLeod, B., & Butt, G. (2009). Localisation of ion transporters in the colon of the Australian common brushtail possum. Comparative Biochemistry and Physiology - Part A: Molecular & Integrative Physiology. 153(2, Suppl. 1), (pp. S83). doi: 10.1016/j.cbpa.2009.04.067

Al-Salami, H., Butt, G., Tucker, I., & Mikov, M. (2007). Influence of the semisynthetic bile acid 3α,7α-dihydroxy-12-keto-5β cholanate (MKC) on the permeation of gliclazide through ileum from healthy and diabetic rats. In J. Hanrahan & D. Traini (Eds.), Proceedings of the Australasian Pharmaceutical Science Association Annual Conference. APSA. [Abstract]

Mao, P., & Butt, A. (2007). Can the cystic fibrosis transmembrane conductance regulator (CFTR) function as a bicarbonate channel? New Zealand Medical Journal, 120(1265). Retrieved from http://journal.nzma.org.nz/journal/120-1265/2822/content.pdf

Harfoot, N., Demmers, K., Carter, D., & Butt, G. (2007). The role of the cystic fibrosis transmembrane conductance regulator in HCO3- secretion by the ileum of the metatherian mammal, Trichosurus vulpecula, the brushtail possum. Proceedings of The Physiological Society. London: Physiological Society. Retrieved from http://www.physoc.org/site/cms/contentviewarticle.asp?article=768

Demmers, K. J., McLeod, B. J., & Butt, A. G. (2006). Investigations into the sequence and function of CFTR in the intestinal epithelia of the marsupial Trichosurus vulpecula, the brushtail possum. Proceedings of the Australian Society for Biochemistry and Molecular Biology (ComBio). Retrieved from http://www.asbmb.org.au/combio2006/abstracts/edited/DEMMERS-20060626065632.rtf

Butt, A. G., Demmers, K., Harfoot, N., Jeungel, J., & McLeod, B. (2005). The role of CFTR in the small intestine of the possum, Trichosurus vulpecula. Proceedings of the Medical Sciences Congress. (pp. 43). [Abstract]

Wen, J.-y., McLeod, B., Butt, A. G., Davies, N., Ledger, R., & Tucker, I. G. (2005). Enhancing absorption of fluorescein and LHRH across hindgut epithelia in the Australian common brushtail possum. AAPS Journal, 7(S2). Retrieved from http://www.aapsj.org/abstracts/AM_2005/AAPS2005-002221.pdf

Clunes, M. T., Butt, A. G., Olver, R. E., & Wilson, S. M. (2004). A selective Na+ conductance in dexamethasone-treated H441 airway epithelial cells. Journal of Physiology, 555P, C52. [Abstract]

Clunes, M. T., Butt, A. G., & Wilson, S. M. (2004). Regulation of a selective Na+ conductance of H441 airway epithelial cells by cAMP. Journal of Physiology, 557P, C50. [Abstract]

Butt, A. G. (2003). Intracellular pH regulation in isolated human colonic crypts. Journal of Physiology, 549P, PC12. [Abstract]

Butt, A. G. (2002). Intracellular pH regulation in isolated human colonic crypts. Proceedings of the Physiological Society of New Zealand. 21, (pp. 41). Auckland. [Abstract]

Tucker, I. G., Butt, A. G., & McLeod, B. (2001). Delivery of bioactives to possums. Biological Management of Possums. (pp. 24-27). Wellington: Ministry of Agriculture and Forestry. [Abstract]

Carter, D. J., Hamilton, K. L., & Butt, A. G. (2001). The role of the Ca2+-dependent, intermediate-conductance K+ channel (IKCa) in the 1-ethyl-2-benzimidazolone (1-EBIO) mediated secretory response in the mouse jejunum. Proceedings of the Physiological Society of New Zealand. 20, (pp. 34). [Abstract]

McLeod, B., Wen, J., Tucker, I. G., Davies, N. M., Ledger, R., & Butt, A. G. (2001). Oral delivery of bioactives to possums protecting bioactives and enhancing their uptake. Biological Management of Possums. (pp. 28-31). Wellington: Ministry of Agriculture and Forestry. [Abstract]

Wen, J., Tucker, I. G., Davies, N. M., Ledger, R., McLeod, B., & Butt, A. G. (2001). The effect of absorption enhancers on the permeability of the large intestine of the Australian brushtail possum, Trichosurus vulpecula. Proceedings of the Physiological Society of New Zealand. 20, (pp. 109). [Abstract]

Amer, S. M. S., & Butt, A. G. (2001). Segmental differences in ion transport stimulated by carbachol in the mouse colon. Proceedings of the Physiological Society of New Zealand. 20, (pp. 17). [Abstract]

Hamilton, K. L., Butt, A. G., Cheng, S. J.-S., & Carter, D. J. (2001). Effects of methoxsalen on Cl- secretion of the mouse jejunum. Proceedings of the Physiological Society of New Zealand. 20, (pp. 56). [Abstract]

Butt, A. G., Wen, J., Tucker, I. G., Davies, N. M., Ledger, R., & McLeod, B. (2001). The possum intestine a barrier and a target. Biological Management of Possums. (pp. 32-35). Wellington: Ministry of Agriculture and Forestry. [Abstract]

McLeod, B. J., Thompson, E. G., Mathieson, S., Tucker, I. G., Davies, N. M., Ledger, R., Wen, J., & Butt, A. G. (2000). Oral delivery of biocontrol agents to possums - solving the problems of targeted delivery in possums. In E. Board (Ed.), Possum and Bovine TB Management in 2010. (pp. 65-71). Wellington: FORST. [Abstract]

Butt, A. G., & McLeod, B. (2000). Variations in dietary Na+ intake do not modify amiloride sensitive Na+ transport in the colon of the brushtail possum. Proceedings of the Physiological Society of New Zealand. 19, (pp. 65). [Abstract]

Hamilton, K. L., Butt, A. G., Cheng, S., & Carter, D. J. (2000). Effects of methoxsalen on ion transport of the mouse jejunum. Proceedings of the Physiological Society of New Zealand. 19, (pp. 66). [Abstract]

Carter, D. J., Hamilton, K. L., & Butt, A. G. (2000). Pharmacologically distinct K+ channels are involved in cAMP- and Ca2+-mediated secretion in the mouse jejunum. Federation of American Societies for Experimental Biology Journal. 14, (pp. A112). [Abstract]

Butt, A. G., & McLeod, B. (1999). Electrogenic ion transport in the colon of the Australian brushtail possum, Trichosurus vulpecula. Proceedings of the Physiological Society of New Zealand. 18, (pp. 46). Auckland: Physiological Society of New Zealand. [Abstract]

Hamilton, K. L., Meads, L., & Butt, A. G. (1999). 1-EBIO activates a K channel involved in C1 secretion in the mouse jejunum. In E. Board (Ed.), FASEB Journal. 13, (pp. A58). Bethesda, USA: Federation of American Societies for Experimental Biology. [Abstract]

Butt, A. G., Taylor, J., & Hamilton, K. L. (1999). HCO3 contributes to the secretory response of the human colon via a DIDS sensitive pathway. Journal of Physiology. 517, (pp. 16P-17P). Manchester, England: British Physiological Society. [Abstract]

Hamilton, K. L., Meads, L., & Butt, A. G. (1999). 1-ethyl-2-benzimidazolone activates a K+ channel involved in C1 secretion in the murine jejunum. Proceedings of the Physiological Society of New Zealand. 18, (pp. 44). [Abstract]

Carter, D. J., Hamilton, K. L., & Butt, A. G. (1999). Pharmacologically distinct K+ channels are involved in the cAMP-and Ca2+-mediated secretion in the mouse jejunum. Proceedings of the Physiological Society of New Zealand. 18, (pp. 45). [Abstract]

McLeod, B., Wen, J., Thompson, E. G., Tucker, I. G., Butt, A. G., Davies, N. M., & Ledger, R. (1999). Oral delivery of peptides and proteins. In G. Sutherland (Ed.), The Royal Society of New Zealand, Occasional Publications. 56, (pp. 11-15). New Zealand: The Royal Society of New Zealand. [Abstract]

Hope, N. M., Ross, I., Warhurst, G., Arn, M., Grigor, M. R., Coy, M., Barbezat, G. O., & Butt, A. G. (1998). Somatostatin (SST) enhances cAMP-dependent short-circuit current in human colon via somatostatin receptor subtype-2 (SSTR-2). Proceedings of the Australian Physiological and Pharmalogical Society. 29, (pp. 149P). Sydney, Australia: Australian Physiological and Pharmacological Society. [Abstract]

Carter, D. J., Hamilton, K. L., & Butt, A. G. (1997). Contribution of C1 conductance to potential volume regulation by mouse jejunal crypt cells. Proceedings of the Physiological Society of New Zealand. 16, (pp. 24). [Abstract]

Butt, A. G., Taylor, J. L., Hamilton, K. L., & Harvey, B. J. (1997). The relationship between intracellular Ca2+ activity and C1 secretion in the human colon. Proceedings of the Physiological Society of New Zealand. 16, (pp. 22). [Abstract]

Kirkness, S. J., Hamilton, K. L., & Butt, A. G. (1997). Secretion of HCO3- by the mouse jejunum. Proceedings of the Physiological Society of New Zealand. 16, (pp. 23). [Abstract]

Hamilton, K. L., & Butt, A. G. (1997). Are basolateral nonselective cation channels and C1 channels involved in the C1 secretory response of mouse jejunal crypts? Proceedings of the Physiological Society of New Zealand. 16, (pp. 22). [Abstract]

Taylor, J. L., Hamilton, K. L., & Butt, A. G. (1997). HCO3- modifies the cAMP-dependent secretory response of human colon in the Ussing chamber. Proceedings of the Physiological Society of New Zealand. 16, (pp. 23). [Abstract]

Hamilton, K. L., & Butt, A. G. (1997). Properties of two K channels of the basolateral membrane of isolated mouse jejunal crypts. In E. Board (Ed.), FASEB Journal. 11, (pp. A25). Bethesda, USA: Federation of American Societies for Experimental Biology. [Abstract]

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Conference Contribution - Poster Presentation (not in published proceedings)

van Hout, I., Rodrigues, E., Slobbe, L., Schultz, M., & Butt, A. G. (2015, August-September). Modulation of colonic stem cell proliferation by bacterial components. Poster session presented at the Queenstown Molecular Biology (QMB) Meetings, Queenstown, New Zealand.

Samuel, G., Rodrigues, E., Slobbe, L., Schultz, M., & Butt, A. G. (2015, August-September). The expression of functional toll like receptors in human colonic organoids. Poster session presented at the Queenstown Molecular Biology (QMB) Meetings, Queenstown, New Zealand.

Gadeock, S., Schultz, M., & Butt, A. G. (2015, August-September). TNF-α induces a biphasic change in the expression and distribution of tight junction proteins in human colonic enteroids. Poster session presented at the Queenstown Molecular Biology (QMB) Meetings, Queenstown, New Zealand.

Rodrigues, E., Slobbe, L., Samuel, G., Gadeock, S., Schultz, M., & Butt, A. G. (2015, August-September). Chronic exposure to LPS modified lineage development via the TLR4 dependent pathway in human colonic enteroids. Poster session presented at the Queenstown Molecular Biology (QMB) Meetings, Queenstown, New Zealand.

Braun, J., Keenan, J., Schultz, M., & Butt, G. (2014, November). Polarization of Caco2 cells impedes uptake of outer membrane vesicles. Poster session presented at the New Zealand Society of Gastroenterology & New Zealand Nurses Organisation Gastroenterology Section Annual Scientific Meeting, Auckland, New Zealand.

Gadeock, S., Schultz, M., & Butt, G. (2014, November). Colonoids: A model of the colonic epithelium in IBD. Poster session presented at the New Zealand Society of Gastroenterology & New Zealand Nurses Organisation Gastroenterology Section Annual Scientific Meeting, Auckland, New Zealand.

Samuel, M., Rodrigues, E., Slobbe, L., Schultz, M., & Butt, G. (2014, November). The expression of toll like receptors in human colonic organoids, three-dimensional cultures of the colonic epithelium. Poster session presented at the New Zealand Society of Gastroenterology & New Zealand Nurses Organisation Gastroenterology Section Annual Scientific Meeting, Auckland, New Zealand.

Rodrigues, E., Slobbe, L., Schultz, M., & Butt, A. G. (2014, November). Chronic exposure to LPS induces goblet cell differentiation in human colonic organoids. Poster session presented at the New Zealand Society of Gastroenterology & New Zealand Nurses Organisation Gastroenterology Section Annual Scientific Meeting, Auckland, New Zealand.

Fan, L., Schultz, M., & Butt, G. (2014, November). Inflammation reduces the activity of the NaHCO3 cotransporter, NBCe1, in the surface cells of the proximal colon of IL10-/- mice. Poster session presented at the New Zealand Society of Gastroenterology & New Zealand Nurses Organisation Gastroenterology Section Annual Scientific Meeting, Auckland, New Zealand.

Dunn, E., Taylor, E., Schultz, M., Butt, G., & Kemp, R. (2013, September). Macrophage and T cell distribution in autoimmune inflammation of the gut. Poster session presented at the Division of Health Sciences Research Forum: Foundations for Health: Otago Health Research, Christchurch, New Zealand.

Chao, T., & Butt, G. (2010, November-December). Functional expression of a NaHCO3 cotransporter in the villous cells of possum ileum. Poster session presented at the Medical Sciences Congress: A New Decade of Discovery (MedSciNZ), Queenstown, New Zealand.

Chao, T., Hamilton, K., Hessian, P., & Butt, G. (2008, November). The conductive properties of exponentially dividing LNCaP prostate cancer cells. Poster session presented at the Medical Sciences Congress, Queenstown, New Zealand.

Gill, M., Bartolo, R., & Butt, G. (2008, November). Secretion in the possum ileum is dependent of the NAHCO3 cotransporter SLC4A4. Poster session presented at the Medical Sciences Congress, Queenstown, New Zealand.

Demmers, K., McLeod, B., & Butt, A. G. (2006, August-September). The cloning of possum CFTR in E. coli leads to bacterial toxicity and instability. Poster session presented at the 16th Annual Queenstown Molecular Biology Meeting, Queenstown, New Zealand.

Mikov, M., Butt, G., Raskovic, A., Jakovljevic, E., & Fawcett, J. P. (2006, February). The influence of probiotic pretreatment and 3α, 7α-dihydroxy-12-oxo-5β-cholanate on gliclazide permeation in the rat ileum. Poster session presented at the 8th Conference on Formulation & Delivery of Bioactives in Association with the New Zealand Chapter Controlled Release Society, Dunedin, New Zealand.

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Conference Contribution - Verbal presentation and other Conference outputs

Angus, H. C. K., Aluzaite, K., Butt, G. A., Schultz, M., & Kemp, R. A. (2018, August). Novel investigation of Crohn's disease T cell phenotypes and functionality in an in vitro human colonoid model. Verbal presentation at the Queenstown Molecular Biology (QMB) and Australasian Society for Immunology New Zealand Branch (ASI-NZ) Joint Meeting, Queenstown, New Zealand.

Angus, H., Aluzaite, K., Schultz, M., Butt, G., & Kemp, R. (2017, July). Investigation into T cell-mediated Crohn's disease. Verbal presentation at the New Zealand Branch of the Australasian Society for Immunology (NZ ASI) Annual Scientific Meeting, Christchurch, New Zealand.

Butt, G. (2015, August-September). Organoids: A new kid on the block. Verbal presentation at the Queenstown Molecular Biology (QMB) Meetings, Queenstown, New Zealand.

Rodrigues, E., Slobbe, L., Schultz, M., & Butt, A. G. (2014, November). Chronic exposure to LPS induces goblet cell differentiation in human colonic organoids. Verbal presentation at the New Zealand Society of Gastroenterology & New Zealand Nurses Organisation Gastroenterology Section Annual Scientific Meeting, Auckland, New Zealand.

Gadeock, S., Schultz, M., & Butt, G. (2014, November). Colonoids: A model of the colonic epithelium in IBD? Verbal presentation at the New Zealand Society of Gastroenterology & New Zealand Nurses Organisation Gastroenterology Section Annual Scientific Meeting, Auckland, New Zealand.

Butt, G. (2013, December). The guts of the matter. Verbal presentation at the Formulation and Delivery of Bioactives Research Theme One Day Forum: Triggered Delivery Systems, Dunedin, New Zealand.

Stebbings, S., Butt, G., & Barclay, M. (2013, June). The big idea. Panel discussion at the University of Otago Gut Health Network Research Theme Meeting, Dunedin, New Zealand.

Gibson, P., Stebbings, S., Butt, G., & McCall, J. (2012, June). Who are we (Part II). Panel discussion at the Inaugural GutHealth Network Workshop, Dunedin, New Zealand.

Butt, G. (2011, November). Beyond the biopsy! Verbal presentation at the New Zealand Society of Gastroenterology & NZNO Gastroenterology Nurses Section Annual Scientific Meeting, Dunedin, New Zealand.

Alsop, T.-A., McLeod, B. J., & Butt, G. (2009, November). Epithelial HCO3- secretion and mucus hydration in the vaginal cul-de-sac of the brushtail possum. Verbal presentation at the Australian and New Zealand Society for Comparative Physiology and Biochemistry 26th Annual Meeting (ANZSCPB), Geelong, Australia.

Gill, M. W., Bartolo, R., & Butt, G. (2009, November). Electrogenic anion secretion in the small intestine of the common Australian brushtail possum, Trichosurus vulpecula. Verbal presentation at the Australian and New Zealand Society for Comparative Physiology and Biochemistry 26th Annual Meeting (ANZSCPB), Geelong, Australia.

Butt, G. (2009, February). Membrane transporters: Essential for cellular function, but do they have a role in drug absorption? Verbal presentation at the New Zealand Chapter of the Controlled Release Society 11th Conference on Formulation and Delivery of Bioactives, Dunedin, New Zealand.

Bartolo, R., Harfoot, N., Gill, M., Demmers, K., McLeod, B., & Butt, G. (2008, November). Secretion in the possum ileum occurs independently of NKCC1. Verbal presentation at the Medical Sciences Congress, Queenstown, New Zealand.

Alsop, T.-A., McLeod, B. J., & Butt, A. G. (2008, November). Cyclic changes in epithelial NA+ transport in the vaginal cul-de-sac of the brushtail possum. Verbal presentation at the Medical Sciences Congress, Queenstown, New Zealand.

Lindstrom, A. L., Myllyluoma, E., Donaldson, G., Schultz, M., & Butt, A. G. (2008, November). Increased intestinal permeability does not precede mild colitis in the IL10-/- mouse model of inflammatory bowel disease. Verbal presentation at the Medical Sciences Congress, Queenstown, New Zealand.

Harfoot, N. A., Bartolo, R., McLeod, B. J., & Butt, A. G. (2007, November). The distribution of CFTR prevents electrogenic anion secretion by the proximal colon of the possum. Verbal presentation at the Medical Sciences Congress, Queenstown, New Zealand.

Harfoot, N., McLeod, B., Juengel, J., & Butt, A. G. (2006, November-December). The expression of secretory NBC and CFTR in the ileal epithelium of the Australian common brushtail possum (Trichosurus vulpecula). Verbal presentation at the Medical Sciences Congress, Rotorua, New Zealand.

Carter, D., Demmers, K., Harfoot, N., McLeod, B., & Butt, A. G. (2006, November-December). The functional properties of the possum cystic fibrosis transmembrane conductance regulator. Verbal presentation at the Medical Sciences Congress, Rotorua, New Zealand.

Butt, A. G., Mathieson, S. E., & McLeod, B. (2005, December). The electrogenic secretory response of the ileum of the Australian brushtail possum, Trichosurus vulpecula. Verbal presentation at the Australian and New Zealand Society for Comparative Physiology and Biochemistry Conference, Dunedin, New Zealand.

Alsop, T.-A., McLeod, B. J., & Butt, A. G. (2005, December). Cyclic changes in epithelial Na+ transport in the vaginal cul-de-sac of the brushtail possum, Trichosurus vulpecula. Verbal presentation at the Australian and New Zealand Society for Comparative Physiology and Biochemistry Conference, Dunedin, New Zealand.

Harfoot, N. A., Juengel, J. L., McLeod, B. J., & Butt, A. G. (2005, December). The distribution and expression of the cystic fibrosis transmembrane conductance regulator in the intestine of the possum, Trichosurus vulpecula. Verbal presentation at the Australian and New Zealand Society for Comparative Physiology and Biochemistry Conference, Dunedin, New Zealand.

Demmers, K., Juengel, J., McLeod, B., & Butt, A. G. (2005, December). The isolation and sequencing of cystic fibrosis transmembrane conductance regulator (CFTR) of the brushtail possum, Trichosurus vulpecula. Verbal presentation at the Australian and New Zealand Society for Comparative Physiology and Biochemistry Conference, Dunedin, New Zealand.

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