Publications by authors named "Jamie Gregor"

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Day 3 Oxford criteria predict steroid non-response for acute severe ulcerative colitis in the post biologic era.
Sudheer K Vuyyuru, Lotus Alphonsus, Theshani Amalka De Silva, Virginia Solitano, Leonardo Guizzetti, Jamie Gregor

J Crohns Colitis· September 2025

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Endoscopic Skipping, Stricturing, and Penetrating Complications in Crohn's Disease on Tandem Ileo-colonoscopy and Cross-sectional Imaging: A Retrospective Cohort Study.
Virginia Solitano, Sudheer Kumar Vuyyuru, Achuthan Aruljothy, Maan Alkhattabi, Joshua Zou, Jamie Gregor

Inflamm Bowel Dis· June 2025

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Initiation of vedolizumab did not provoke new-onset spondylarthritis in patients with inflammatory bowel disease: A prospective 24-week study with imaging assessments.
Sherry Rohekar, Tristan Boyd, Robert G Lambert, Melanie Beaton, Nilesh Chande, Jamie Gregor

United European Gastroenterol J· September 2024

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Prevalence of stricturing, penetrating complications and extraintestinal manifestations in inflammatory bowel disease detected on cross-sectional imaging in a tertiary care setting.
Sudheer Kumar Vuyyuru, Virginia Solitano, Achuthan Aruljothy, Maan Alkhattabi, Melanie Beaton, Jamie Gregor

United European Gastroenterol J· September 2024

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Cannabis Use in Patients With Inflammatory Bowel Disease Following Legalization of Cannabis in Canada.
Vadim Iablokov, Jamie Gregor, Nilesh Chande, Terry Ponich, Vipul Jairath

Crohns Colitis 360· April 2024

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2023 Canadian Surgery Forum: Sept. 20-23, 2023.
Raphaëlle Brière, Marce Émond, Axel Benhamed, Pierre-Gilles Blanchard, Sébastien Drolet, Jamie Gregor

Can J Surg· January 2024

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Clinical, Endoscopic, and Radiological Effectiveness of Ustekinumab in Bio-naïve Versus Bio-experienced Patients With Crohn's Disease: Real-world Experience From a Large Canadian Center.
Rocio Sedano, Leonardo Guizzetti, Cassandra McDonald, Melanie Beaton, Nilesh Chande, Jamie Gregor

Inflamm Bowel Dis· June 2023

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Severity of coeliac disease and clinical management study when using a non-metabolised medication: a phase I pharmacokinetic study.
Marc L Chretien, David G Bailey, Linda Asher, Jeremy Parfitt, David Driman, Jamie Gregor

BMJ Open· February 2023

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Association of Trainee Participation in Colonoscopy Procedures With Quality Metrics.
Michael Sey, Sarah Cocco, Cassandra McDonald, Zaid Hindi, Hasibur Rahman, Jamie Gregor

JAMA Netw Open· August 2022

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High oncostatin M predicts lack of clinical remission for patients with inflammatory bowel disease on tumor necrosis factor α antagonists.
Angela Guo, Cameron Ross, Nilesh Chande, Jamie Gregor, Terry Ponich

Sci Rep· January 2022

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The Tricky Trachea: Tracheitis and Mediastinitis Treated With Infliximab and Steroids in a Patient With Ulcerative Colitis.
Debarati Chakraborty, Jessica Shepherd, Jamie Gregor, Inderdeep Dhaliwal

Chest· September 2021

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Safety of Biologic Therapy in Octogenarians and Nonagenarians With Inflammatory Bowel Disease in Ontario: A Case Series.
Abdul Ayoub, Vipul Jairath, Saleh Aldraiweesh, Reena Khanna, Jamie Gregor

Inflamm Bowel Dis· November 2020

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Severity of coeliac disease and clinical management study when using a CYP3A4 metabolised medication: a phase I pharmacokinetic study.
Marc L Chretien, David G Bailey, Linda Asher, Jeremy Parfitt, David Driman, Jamie Gregor

BMJ Open· March 2020

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Presence of Melena in Obscure Gastrointestinal Bleeding Predicts Bleeding in the Proximal Small Intestine.
Cindy Ningfu Zhu, Joshua Friedland, Brian Yan, Aze Wilson, Jamie Gregor

Dig Dis Sci· May 2018

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Insertion of percutaneous endoscopic gastrostomy tubes with jejunal extensions using the "wedge" technique: a novel method to prevent retrograde tube migration into the stomach.
Michael S L Sey, Hannah Gregor, Jamie Gregor, Brian Yan

Endoscopy· December 2017

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The utility of fecal calprotectin in predicting the need for escalation of therapy in inflammatory bowel disease.
Lukasz Kwapisz, Jamie Gregor, Nilesh Chande, Brian Yan, Terry Ponich

Scand J Gastroenterol· August 2017

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Self-Screening for Malnutrition Risk in Outpatient Inflammatory Bowel Disease Patients Using the Malnutrition Universal Screening Tool (MUST).
Amindeep Sandhu, Mahmoud Mosli, Brian Yan, Thomas Wu, Jamie Gregor

JPEN J Parenter Enteral Nutr· May 2016

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Follow-up of participants in the Canadian Association of Gastroenterology Scholars' Program, 2006 to 2012.
Mindy Ching Wan Lam, Michael Sl Sey, Jamie Gregor, Clarence Wong

Can J Gastroenterol Hepatol· February 2014

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Transcutaneous bowel sonography for inflammatory bowel disease is sensitive and specific when performed in a nonexpert low-volume North American center.
Michael Sai Lai Sey, Jamie Gregor, Nilesh Chande, Terry Ponich, Mousumi Bhaduri

J Ultrasound Med· August 2013

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Retrospective analysis of disease association and outcome in histologically confirmed ischemic colitis.
Mahmoud Mosli, Jeremy Parfitt, Jamie Gregor

J Dig Dis· May 2013

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Wait times for diagnostic colonoscopy among outpatients with colorectal cancer: a comparison with Canadian Association of Gastroenterology targets.
Michael Sai Lai Sey, Jamie Gregor, Paul Adams, Nitin Khanna, Chris Vinden

Can J Gastroenterol· December 2012

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Percutaneous endoscopic gastrostomy tube placement for end-stage palliation of malignant gastrointestinal obstructions.
Anouar Teriaky, Jamie Gregor, Nilesh Chande

Saudi J Gastroenterol· July 2012

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Intestinal CYP3A4 and midazolam disposition in vivo associate with VDR polymorphisms and show seasonal variation.
Ranjit K Thirumaran, Jatinder K Lamba, Richard B Kim, Brad L Urquhart, Jamie C Gregor

Biochem Pharmacol· July 2012

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Nonutility of routine testing of stool for ova and parasites in a tertiary care Canadian centre.
Mahmoud Mosli, Jamie Gregor, Nilesh Chande, Robert Lannigan

Can J Microbiol· May 2012

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Functional characterization of genetic variants in the apical sodium-dependent bile acid transporter (ASBT; SLC10A2).
Richard H Ho, Brenda F Leake, Brad L Urquhart, Jamie C Gregor, Paul A Dawson

J Gastroenterol Hepatol· December 2011

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