Publications by authors named "James Gregor"

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IL23 Receptor Polymorphism Is a Predictor of Anti-Tumour Necrosis Factor-α-Induced Paradoxical Psoriasis in Inflammatory Bowel Disease.
Navneet Natt, Monica Gindi, Gio R Dela Cruz, Terry Ponich, James C Gregor

Aliment Pharmacol Ther· September 2025

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Impact of CYP2C19 metabolizer status on esophageal mucosal inflammation, acid exposure, and motility among patients on chronic proton-pump inhibitor therapy with refractory symptoms of gastroesophageal reflux disease.
Cheng-Chun Tai, Samantha Medwid, Keith Mclntosh, Nilesh Chande, Richard B Kim, James Gregor

J Can Assoc Gastroenterol· June 2024

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HLADQA1∗05G>A Genetic Screening Promotes the Safe Delivery of Combination Therapy in Inflammatory Bowel Disease.
Aze Wilson, Nilesh Chande, Terry Ponich, James C Gregor, Yun-Hee Choi

Clin Gastroenterol Hepatol· April 2024

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Clinical Guidelines for the Management of IBD.
Reena Khanna, Aze S Wilson, James C Gregor, Katherine L Prowse, Waqqas Afif

Gastroenterology· December 2021

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Subcutaneously Administered Anti-TNFs for the Treatment of Ulcerative Colitis: A Retrospective, Propensity Score-Matched, US Health Claims Analysis.
Michael J Stewart, Talat Bessissow, James Gregor, Maureen Hazel, Tracy S H In

Adv Ther· July 2021

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Pretreatment HLADQA1-HLADRB1 Testing for the Prevention of Azathioprine-Induced Pancreatitis in Inflammatory Bowel Disease: A Prospective Cohort Study.
Aze Wilson, Qian Wang, Yun-Hee Choi, Terry Ponich, James C Gregor

Clin Transl Gastroenterol· April 2021

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Safety of Combination Biologic and Antirejection Therapy Post-Liver Transplantation in Patients With Inflammatory Bowel Disease.
Saleh Al Draiweesh, Christopher Ma, Maan Alkhattabi, Cassandra McDonald, Tran M Nguyen, James C Gregor

Inflamm Bowel Dis· May 2020

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Crohn's Disease Is Associated with Decreased CYP3A4 and P-Glycoprotein Protein Expression.
Aze Wilson, Bradley L Urquhart, Terry Ponich, Nilesh Chande, James C Gregor

Mol Pharm· September 2019

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Teduglutide in Patients With Active Crohn's Disease and Short Bowel Syndrome.
Saleh Al Draiweesh, Christopher Ma, James C Gregor, Adam Rahman, Vipul Jairath

Inflamm Bowel Dis· August 2019

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Systematic review with meta-analysis: high prevalence and cost of continued aminosalicylate use in patients with ulcerative colitis escalated to immunosuppressive and biological therapies.
Christopher Ma, Leonardo Guizzetti, Lauren E Cipriano, Claire E Parker, Tran M Nguyen, James C Gregor

Aliment Pharmacol Ther· February 2019

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Inflammatory bowel disease patients prioritize mucosal healing, symptom control, and pain when choosing therapies: results of a prospective cross-sectional willingness-to-pay study.
James C Gregor, Martin Williamson, Dorota Dajnowiec, Bernie Sattin, Erik Sabot

Patient Prefer Adherence· April 2018

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The Utility of Endoscopic Biopsies in Patients with Normal Upper Endoscopy.
Anouar Teriaky, Abdullah AlNasser, Carolyn McLean, James Gregor, Brian Yan

Can J Gastroenterol Hepatol· March 2017

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Rapid fecal calprotectin testing to assess for endoscopic disease activity in inflammatory bowel disease: A diagnostic cohort study.
Lukasz Kwapisz, Mahmoud Mosli, Nilesh Chande, Brian Yan, Melanie Beaton, James Gregor

Saudi J Gastroenterol· October 2016

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Efficiency and patient experience with propofol vs conventional sedation: A prospective study.
Patrick Thornley, Mohammad Al Beshir, James Gregor, Andreas Antoniou, Nitin Khanna

World J Gastrointest Endosc· February 2016

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Opioid use is associated with decreased quality of life in patients with Crohn's disease.
David Sanford, Patrick Thornley, Anouar Teriaky, Nilesh Chande, James Gregor

Saudi J Gastroenterol· March 2015

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Validation of international algorithms to identify adults with inflammatory bowel disease in health administrative data from Ontario, Canada.
Eric I Benchimol, Astrid Guttmann, David R Mack, Geoffrey C Nguyen, John K Marshall, James C Gregor

J Clin Epidemiol· August 2014

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Computer-based virtual reality colonoscopy simulation improves patient-based colonoscopy performance.
Keith S McIntosh, James C Gregor, Nitin V Khanna

Can J Gastroenterol Hepatol· April 2014

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The safety and efficacy of adalimumab in patients with Crohn's disease: the experience of a single Canadian tertiary care centre.
Anouar Teriaky, James Gregor, Brian Yan, Terry Ponich, Nilesh Chande

Scand J Gastroenterol· March 2014

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The safety and tolerability of methotrexate for treating patients with Crohn's disease.
Nilesh Chande, Ibrahim Abdelgadir, James Gregor

J Clin Gastroenterol· August 2011

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Detecting the other reflux disease.
Amin Madani, Eric Wong, Leigh Sowerby, Kevin Fung, James C Gregor

J Fam Pract· February 2010

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Predictors of disease severity in ulcerative colitis patients from Southwestern Ontario.
Lee S Roth, Nilesh Chande, Terry Ponich, Maya L Roth, James Gregor

World J Gastroenterol· January 2010

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Association between proton pump inhibitors and respiratory infections: a systematic review and meta-analysis of clinical trials.
Nabil Sultan, Jose Nazareno, James Gregor

Can J Gastroenterol· September 2008

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Resource implications for a population-based colorectal cancer screening program in Canada: a study of the impact on colonoscopy capacity and costs in London, Ontario.
Agatha Lau, James C Gregor

Can J Gastroenterol· June 2007

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Eosinophilic esophagitis in adults: distinguishing features from gastroesophageal reflux disease: a study of 41 patients.
Jeremy R Parfitt, James C Gregor, Neville G Suskin, Hani A Jawa, David K Driman

Mod Pathol· January 2006

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A survey of Canadian gastroenterologists about the use of methotrexate in patients with Crohn's disease.
Nilesh Chande, Terry Ponich, James Gregor

Can J Gastroenterol· September 2005

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