Gregory Austin, MD
Professor, Medicine-Gastroenterology

Research Interests

Publications

• Scholand K, Tarter W, Hochheimer C, Long C, Austin G, Cassell B. S376 Provider Recommendation Adjustment to 2020 US Multi-Society Task Force on Colorectal Cancer Guidelines for Surveillance After Colonoscopy with Polypectomy for 3-4 Non-Advanced Adenomas. American Journal of Gastroenterology 2023;118:S272-S273.
• Cassell BE, Boland K, Tarter W, Hochheimer CJ, Long C, Austin GL. Su1129 PROVIDER ADHERENCE TO AND PREDICTORS OF VARIABILITY FOR THE 2020 US MULTI-SOCIETY TASK FORCE ON COLORECTAL CANCER GUIDELINES FOR SURVEILLANCE AFTER COLONOSCOPY WITH POLYPECTOMY. Gastroenterology 2023;164:S-538.
• Kolb JM, Austin GL. Histology, Size, and Number of Advanced Polyps are Associated With Guideline-Discordant Surveillance Recommendations. Clin Gastroenterol Hepatol. 2022 Oct;20(10):2402-2404. PubMed PMID: 33991693
• Jones B, Scott FI, Espinoza J, Laborde S, Chambers M, Wani S, Edmundowicz S, Austin G, Pell J, Patel SG. Leveraging electronic medical record functionality to capture adenoma detection rate. Sci Rep. 2022 Jun 11;12(1):9679. PubMed PMID: 35690660
• Austin GL. Comment on: Iron deficiency is highly prevalent among candidates for metabolic surgery and may impact perioperative outcomes. Surg Obes Relat Dis. 2021 Oct;17(10):1701-1702. PubMed PMID: 34389246
• Kolb JM, Austin GL. Histology, Size, and Number of Advanced Polyps are Associated With Guideline-Discordant Surveillance Recommendations. Clin Gastroenterol Hepatol. 2021 May 13. [Epub ahead of print] PubMed PMID: 33991693
• Galatowitsch JF, Zivney M, Haydek JP, Austin G. S3016 A Big Problem in the Small Intestine: A Rare Case of Small Bowel Lymphoma with Acute Presentation. Official journal of the American College of Gastroenterology | ACG 2021;116:S1247. Presented in poster format at the American College of Gastroenterology Annual Scientific Meeting, October 2021.
• Nearing KA, Nuechterlein BM, Tan S, Zerzan JT, Libby AM, Austin GL. Training Mentor-Mentee Pairs to Build a Robust Culture for Mentorship and a Pipeline of Clinical and Translational Researchers: The Colorado Mentoring Training Program. Acad Med. 2020 May;95(5):730-736. PubMed PMID: 31972672
• Patel SG, Ahnen DJ, Gumidyala A, Espinoza J, Nicklawsky A, Hu J, Smith D, Lowery J, Austin G, Cockburn M. Poor Knowledge of Personal and Familial Colorectal Cancer Risk and Screening Recommendations Associated with Advanced Colorectal Polyps. Dig Dis Sci. 2020 Sep;65(9):2542-2550. PubMed PMID: 32144601
• Cassell BE, Ross K, Chang TY, Austin GL. Predictors of Failed Conscious Sedation in Patients Undergoing an Outpatient Colonoscopy and Implications for the Adenoma Detection Rate. Sci Rep. 2020 Feb 7;10(1):2167. PubMed PMID: 32034266
• Jones B, Patel S, Wani S, Pell J, Laborde S, Chambers M, Scott F, Austin G, Espinoza J. S1249 Leveraging Electronic Medical Record Functionality to Capture Adenoma Detection Rate: Proof of Concept. American Journal of Gastroenterology. 115. S628-S628. 10.14309/01.ajg.0000707044.01923.c2.
• Dillon SM, Castleman MJ, Frank DN, Austin GL, Gianella S, Cogswell AC, Landay AL, Barker E, Wilson CC. Brief Report: Inflammatory Colonic Innate Lymphoid Cells Are Increased During Untreated HIV-1 Infection and Associated With Markers of Gut Dysbiosis and Mucosal Immune Activation. J Acquir Immune Defic Syndr. 2017 Dec 1;76(4):431-437. PubMed PMID: 28825942
• Austin GL, Weiskopf JR, Czwornog JL. Association of Proton Pump Inhibitor Use With Serum Biomarkers of Inflammation, Insulin Resistance, Cardiovascular Risk, and Renal Function. J Clin Gastroenterol. 2017 Nov 3. [Epub ahead of print] PubMed PMID: 29099466
• Hankins SC, Brimhall BB, Kankanala V, Austin GL. A low-volume polyethylene glycol solution was associated with an increased suboptimal bowel preparation rate but had similar recommendations for an early repeat colonoscopy, procedure times, and adenoma detection rates. PLoS One. 2017;12(4):e0176265. PubMed PMID: 28448598
• Dillon SM, Kibbie J, Lee EJ, Guo K, Santiago ML, Austin GL, Gianella S, Landay AL, Donovan AM, Frank DN, McCARTER MD, Wilson CC. Low abundance of colonic butyrate-producing bacteria in HIV infection is associated with microbial translocation and immune activation. AIDS. 2017 Feb 20;31(4):511-521. PubMed PMID: 28002063
• Austin GL. Paired editorial: Do sleeve gastrectomy and gastric bypass influence treatment with proton pump inhibitors 4 years postsurgery? A nationwide cohort. Surg Obes Relat Dis. 2017 Jun;13(6):960-961. PubMed PMID: 28411020
• Mounzer R, Austin GL, Wani S, Brauer BC, Fukami N, Shah RJ. Per-oral video cholangiopancreatoscopy with narrow-band imaging for the evaluation of indeterminate pancreaticobiliary disease. Gastrointest Endosc. 2017 Mar;85(3):509-517. PubMed PMID: 27894928
• Dillon SM, Lee EJ, Kotter CV, Austin GL, Gianella S, Siewe B, Smith DM, Landay AL, McManus MC, Robertson CE, Frank DN, McCarter MD, Wilson CC. Gut dendritic cell activation links an altered colonic microbiome to mucosal and systemic T-cell activation in untreated HIV-1 infection. Mucosal Immunol. 2016 Jan;9(1):24-37. PubMed PMID: 25921339
• Samuelson A, Zeligman B, Russ P, Austin GL, Yen R, Shah RJ. Pancreatic Duct Changes in Patients With Chronic Pancreatitis Treated With Polyethylene and Sof-Flex Material Stents: A Blinded Comparison. Pancreas. 2016 Feb;45(2):281-5. PubMed PMID: 26752255
• Ward EK, Austin GL. Response to Letter to the Editor Re: Acid suppression medications are associated with suboptimal weight loss after laparoscopic Roux-en-Y gastric bypass in patients older than 40 years. Surg Obes Relat Dis. 2015 Sep-Oct;11(5):1190-1. PubMed PMID: 26645494
• Jensen-Otsu E, Austin GL. Antidepressant Use is Associated with Increased Energy Intake and Similar Levels of Physical Activity. Nutrients. 2015 Nov 20;7(11):9662-71. PubMed PMID: 26610562
• Czwornog JL, Austin GL. Association of Proton Pump Inhibitor (PPI) Use with Energy Intake, Physical Activity, and Weight Gain. Nutrients. 2015 Oct 19;7(10):8592-601. PubMed PMID: 26492268
• Austin GL, Ward EK. Response to letter to the editor Re: The effect of PPI use on human gut microbiota and weight loss in patients undergoing laparoscopic Roux-en-Y gastric bypass. Obes Surg. 2015 Jun;25(6):1070. PubMed PMID: 25860132
• Ward EK, Jensen-Otsu E, Schoen JA, Rothchild K, Mitchell B, Austin GL. Acid suppression medications are associated with suboptimal weight loss after laparoscopic Roux-en-Y gastric bypass in patients older than 40 years. Surg Obes Relat Dis. 2015 May-Jun;11(3):585-90. PubMed PMID: 25553887
• Jensen-Otsu E, Ward EK, Mitchell B, Schoen JA, Rothchild K, Mitchell NS, Austin GL. The effect of Medicaid status on weight loss, hospital length of stay, and 30-day readmission after laparoscopic Roux-en-Y gastric bypass surgery. Obes Surg. 2015 Feb;25(2):295-301. PubMed PMID: 25022673

Professional Memberships

• American Gastroenterological Association, Member
• American College of Gastroenterology, Member