Scholarly ActivitiesResidency Program

Scholar ActivitiesScholar ActivitiesThe UTMB Internal Medicine residency program is the ideal environment to train the highly-skilled clinical investigators of tomorrow. Research projects are plentiful on the UTMB campus among a variety of departments. Year after year, faculty demonstrate their willingness to involve residents in their clinical and bench research projects. They provide experience and guidance in the research training of Internal Medicine residents.

In order to foster research efforts, residents are able to dedicate elective rotations, free from clinical duties, towards their research. Semiannual program evaluations document the publications, posters, oral presentations, abstracts, and quality improvement projects completed by each resident, helping to boost resident productivity.

James Pavela research As a direct result, residents are able to present their efforts at a variety of conferences, on the international, national, or regional level. This past years, residents were able to present at conferences in Hawaii, San Francisco, Orlando, Washington D.C., and Germany. UTMB Internal Medicine is able to provide some financial assistance towards resident travel to make these trips feasible.


Below is a list of publications by some of our current residents.

1. Riddhi Bodani

Articles Published in Peer-Reviewed Journals

  • Gerson JE, Castillo-Carranza DL, Sengupta U, Bodani R, Prough DS, DeWitt D, Hawkins BE, Kayed R. Tau Oligomers Derived from Traumatic Brain Injury cause Cognitive Impairment and Accelerate Onset of Pathology in Htau mice. J. Neurotrauma 2016.
  • Bodani R, Sengupta U, Castillo-Carranza DL, Guerrero-Muñoz, MJ, Gerson JE, Rudra J, Kayed R. Antibody Against Small Aggregated Peptide Specifically Recognizes Toxic Aβ-42 Oligomers in Alzheimer’s Disease. ACS Chemical Neuroscience 2015; 6(12): 1981-1989.


  • Bodani R, Sengupta U, Castillo-Carranza D, Gerson, J, Kayed R. Development and Characterization of a Novel Antibody Specific for Amyloid Beta-42 Toxic Oligomers in Alzheimer’s Disease. Poster presented at: 9th Annual Research Symposium on Alzheimer’s Disease and Related Dementias, Rice University; Houston, TX; September 2015.

2. Ahmed Chatila


  • Chatila AT, Bilal M, Guturu P. A rare landmark of cecal intubation. Gastroenterol Hepatol Bed Bench 2019; 12(1): 83-84 [PMID: 30949325 PMCID: PMC6441479]
  • Chatila AT, Bilal M, Guturu P. Evaluation and management of acute pancreatitis. World J Clin Cases 2019; 7(9): 1006-1020 [PMID: 31123673 PMCID: PMC6511926 DOI: 10.12998/wjcc.v7.i9.1006]
  • Chatila AT, Bilal M, Merwat S. Kayexalate-Induced Colonic Pseudotumor. Clin Gastroenterol Hepatol 2019; 17(7): e73 [PMID: 29609060  DOI: 10.1016/j.cgh.2018.03.032]
  • Chatila AT, Nguyen MTT, Krill T, Roark R, Bilal M, Reep G. Natural history, pathophysiology and evaluation of gastroesophageal reflux disease. Dis Mon 2019 [PMID: 30803725 DOI: 10.1016/j.disamonth.2019.02.001]
  • Chatila AT, Gou E, Abdulla H, Merwat S. Two Cases of Bleeding Angiodysplasias Within Duodenal Diverticulum. ACG Case Reports Journal 2019; 6(3): e00027 [PMID: 02075970-201903000-00010  DOI: 10.14309/crj.0000000000000027]
  • Mohy-Ud-Din N, Krill TS, Shah AR,Chatila AT, Singh S, Bilal M, Parupudi S. Barrett's esophagus: What do we need to know? Dis Mon 2019 [PMID: 30808502 DOI: 10.1016/j.disamonth.2019.02.003]


  • Chatila A, Klimczak S, Low L. A Case of Elevated Autoimmune Serologies in Alcoholic Hepatitis. American Journal of Gastroenterology 2018; 113
  • Chatila A, Bilal M, Guturu P. A Rare Landmark of Cecal Intubation: An Invaginated Appendix. American Journal of Gastroenterology 2018; 113 
  • Chatila A, Gou E, Abdulla H, Merwat S. Arteriovenous Malformation Within Duodenal Diverticulum: 1569. American Journal of Gastroenterology 2018; 113: S903 
  • Chatila A, Bilal M, Kassem A, Lagrimas L, Carrete L, Low L, Ojo O, Merwat S, Sonstein L, Cohn S. Evaluating and Improving Adherence to Guideline-Based Care in Diagnosis and Management of Cirrhosis-A Quality Improvement Project. American Journal of Gastroenterology 2018; 113 
  • Chatila A, Clark L, Ghouri Y, Luthra G. Fishing in the Colon. American Journal of Gastroenterology 2018; 113 
  • Chatila A, Bilal M, Kassem AC, Lagrimas L, Carrete L, Low LE, Merwat S, Sonstein L, Cohn S. Su1489–Evaluating and Improving Quality of Care in Patients with End-Stage Liver Disease. Gastroenterology 2019; 156(6): S-1281 
  • Jamali T, Abdulla H, Chatila A, Parupudi S. Pseudoforeign Body of the Esophagus. American Journal of Gastroenterology 2018; 113 >
  • Krill TS, Crain R, Al-Saadi Y, Stubbs S, Roark R, Chatila A, Haddad C, Kaushik C, Marcondes FO, Guturu P. Sa1535–Predictors of 30-Day Readmission After Inpatient Endoscopic Retrograde Cholangiopancreatography. Gastroenterology 2019; 156(6): S-344 
  • Krill TS, Chatila A, Samuel R, Marcondes FO, Guturu P, Parupudi S. Sa1536–Endoscopic Sphincterotomy on Thienopyridine Therapy Has Similar Outcomes Compared to Low Dose Aspirin Alone. Gastroenterology 2019; 156(6): S-344-S-345 
  • Merwat S, Chatila A, Bilal M, Kulkarni R, Stevenson H, Fair J, Merwat S, Kozlowski T, Mujtaba M. Sa1583–Immunologic Outcomes in Recipients of Orthotopic Liver Transplant Induced Only with Steroids. Gastroenterology 2019; 156(6): S-1242 
  • Mujtaba M, Merwat S, Fair J, Bilal M, Chatila A, Kulkarni R, Zou J, Hussain S, Gamilla-Crudo A. Immunologic Impact Of Native Kidney Function On Liver Transplant Patients. Proceedings of the AMERICAN JOURNAL OF TRANSPLANTATION; 2019. WILEY 111 RIVER ST, HOBOKEN 07030-5774, NJ USA: 1078-1078

3. Miquel Chavez

  • Chavez MA, White Jr AC. Novel treatment strategies and drugs in development for cryptosporidiosis. Expert review of anti-infective therapy. 2018 Aug 3;16(8):655-61.
  • Baqui AH, McCollum ED, Saha SK, Roy AK, Chowdhury NH, Harrison M, Hanif AA, Simmons N, Mahmud A, Begum N, Ahmed S, Khan AM, Ahmed ZB, Islam M, Mitra D, Quaiyum A, Chavez MA, Pervaiz F, Miele CH, Schuh HB, Khanam R, Checkley W, Moulton LH, Santosham M. Pneumococcal Conjugate Vaccine impact assessment in Bangladesh. Gates Open Research. 2018 Apr 26;2.
  • Ellington LE, Gilman RH, Chavez MA, Pervaiz F, Marin-Concha J, Compen-Chang P, Riedel S, Rodriguez SJ, Gaydos C, Hardick J, Tielsch JM. Lung ultrasound as a diagnostic tool for radiographically-confirmed pneumonia in low resource settings. Respiratory medicine. 2017 Jul 1;128:57-64.

4. Daniel Gonzalez

  • Yeh O, Gonzalez ED, Gonzalez EB. An Update on the Pathology and Clinical Management of Gouty Arthritis. Journal of Clinical and Molecular Pathology (accepted), 2017.

5. Patrik Hornak


  • Hornak JP, Sonstein LK, Reynoso D. An antimicrobial stewardship elective for internal medicine residents. Infect Control Hosp Epidemiol 2019; Jul 29:1-2. [Epub ahead of print]. doi: 10.1017/ice.2019.212. PMID: 31354117.
  • Hornak JP, McLean MR, Webb CM, Keiser PH. A Comparison of Erysipelothrix rhusiopathiae Bacteremia With and Without Endocarditis in Frequent Fish Handlers. Infect Dis Clin Pract 2019; 27(3):175-177. doi: 10.1097/IPC.0000000000000725.


  • Nguyen BX, Hornak JP, Christians NA, Zhao J, Aronson JF, Adesina GO. Superior Vena Cava Syndrome: A Rare Complication of Aortic Valve and Root Replacement. J Am Coll Cardiol 2019; 73(9 Suppl 1):2379. doi: 10.1016/S0735-1097(19)32985-7.
  • Rodriguez-Lozano JA, Gilani S, Frank L, Hornak J, Gao L, Berbarie RF. Saccular Coronary Aneurysm Presenting as Acute Coronary Syndrome With Atrial Flutterand Complete Heart Block. J Am Coll Cardiol 2019; 73(9 Suppl 1):2379. doi: 10.1016/S0735-1097(19)33003-7.
  • Rodriguez-Lozano JA, Deanda A, Gilani S, Frank L, Hornak P, Gogia B, Marcondes F, Chavez M, Berbarie RF. Coronary aneurysms: Variable presentations and management. Curr Res Cardiol 2018; 5:38. doi: 10.4172/2368-0512-C1-003.
  • Hornak JP. Are we PrEPared? Awareness and Prescribing Patterns of HIV Pre-Exposure Prophylaxis by Internal Medicine Resident Physicians at an Academic Medical Center. Open Forum Infect Dis 2018; 5(Suppl 1):S403. doi: 10.1093/ofid/ofy210.1151. PMCID: 6253008.
  • Hornak JP, Sonstein LK, Reynoso D. An antimicrobial stewardship elective for internal medicine residents. Infect Control Hosp Epidemiol 2019; 40(10):1212-1213. doi: 10.1017/ice.2019.212. PMID: 31354117.

6. Kevin Kline

  • Zhong XS, Winston J, Luo X, Kline K, Nayeem S, Cong Y, Savidge T, Dashwood R, Powell D, Li Q (2018) Neonatal Colonic Inflammation Epigenetically Aggravates Epithelial IL-1β Responses to Injury in Adult Life. Cellular and Molecular Gastroenterology and Hepatology. 6(1): 65-78.
  • Kline K, Gou E, Bilal M, Parupudi S (2018) A Tale of Two Tumors: A Case of Concomitant Esophageal Squamous Papilloma and Granular Cell Tumor. Journal of Gastrointestinal Cancer 49(2): 225-226.
  • Kline K, Bilal M, Gou E, Shabot JM (2017) A Road Less Traveled: Spinal Metastasis in Gastric Adenocarcinoma. Journal of Gastrointestinal Cancer 48(4): 388-389.

7. Felippe Marcondes

  • Marcondes FO, Gourevitch RA, Schoen RE, Crockett SD, Morris M, Mehrotra A. Adenoma Detection Rate Falls at the End of the Day in a Large Multi-site Sample. Digestive diseases and sciences. 2018 Apr 1;63(4):856-9.
  • Marcondes FO, Dean KM, Schoen RE, Leffler DA, Rose S, Morris M, Mehrotra A. The impact of exclusion criteria on a physician’s adenoma detection rate. Gastrointestinal endoscopy. 2015 Oct 1;82(4):668-75.

8. Vincent Mendiola

  • Mendiola, VL, Kesireddy, M, Jana, B.. Concordance and Discordance in Myeloma Bone Marrow Studies. Journal of Clinical Oncology. 2019, May; 37(15_suppl.e19508)

9. Anh Nguyen

  • Scott GF, Nguyen AQ, Cherry BH, Hollrah RA, Salinas I, Williams AG Jr, Ryou MG, Mallet RT. Featured Article: Pyruvate preserves antiglycation defenses in porcine brain after cardiac arrest. Exp Biol Med 2017 242: 1095 – 1103.

10. Bao Nguyen

  • Nguyen B, Petros V, Aronson J, Sonstein L. Liver Metastatic Melanoma: A Unique Case with Normal Alkaline Phosphatase and Melanuria. J Gastrointes Canc 2018. [Epub ahead of print] doi: 10.1007/s12029-018-0090-7.
  • Venkatesan R, Willis M, Campbell B, Nguyen B, Li S. Recurrent head and neck cancer presenting as a large retroperitoneal mass: An exceedingly rare case and review of the literature. JCSO 2018;16(1):e34-e36.
  • Sikanderkhel S, Almahmoud M, Choudhry W, Ibrahim H, Nguyen B, Roark R, Gilani S, Khalife W. Impact on ejection fraction and major adverse cardiovascular events in heart failure with reduced ejection fraction patients undergoing fractional flow reserve versus angiography guided revascularization. Circulation 2017;136:A20192.

11. Karen Ong

  • Ong KM, Blackford JA, Kagan BL, Simons SS, Chow CC. A theoretical framework for gene induction and experimental comparisons. Proc Natl Acad Sci USA. 2010;107(15):7107-7112. doi:10.1073/pnas.0911095107.
  • Chow CC, Ong KM, Dougherty EJ, Simons SS. Chapter Sixteen - Inferring Mechanisms from Dose–Response Curves. In: Johnson ML, Brand L, eds. Methods in Enzymology. Vol 487. Computer Methods, Part C. Academic Press; 2011:465-483. doi:10.1016/B978-0-12-381270-4.00016-0
  • Chow CC, Ong KM, Kagan B, Simons SS. Theory of partial agonist activity of steroid hormones. AIMS molecular science. 2015;2(2):101-123. doi:10.3934/molsci.2015.2.101#sthash.jxRCteJz.dpuf.

12. Russell Roark

  • Roark R, Sydor M, Chatila AT, Umar S, Guerra R, Bilal M, Guturu P. Management of gastroesophageal reflux disease. Dis Mon 2019 [PMID: 30798984 DOI: 10.1016/j.disamonth.2019.02.002]

13. Josie Rossitto

  • A Case of MEN1 Syndrome Presenting with Primary Hyperparathyroidism, PPOMA, and Collagenomas from and uncommon Polymorphism of MEN1 Gene. Josie Rossitto, MD & Nisarg Shah, MD (Presented at the 16th International Workshop on Multiple Endocrine Neoplasia at MD Anderson)
  • A Case of 47, XYY Syndrome Presenting with Primary Hypogonadism, Gynecomastia, and Multiple Neuropsychiatric Co-morbidities. Josie Rossitto, MD & Nisarg Shah, MD
  • Unexplained Hypoglycemia in a 93 year old without Diabetes. Josie Rossitto, MD & Maria Belalcazar, MD (Poster 2 and 3 were both presented at the Texas AACE Conference in Austin TX)

14. Abdullah Shaikh

  • Tau JA, Bernica J, Shaikh A, Thrift AP, El-Serag H. Temporal Trends in Pre-Diagnosis Screening and Surveillance Among Patients with Newly Diagnosed CRC. A Healthcare System Quality Measure?. Gastroenterology. 2017 Apr 1;152(5):S850.

15. Judy Trieu

  • Trieu JA, Lewis B, Bilal M, Gou E, Sonstein L, Parupudi S. Adherence to Nutrition in Acute Alcoholic Hepatitis is Low. Ann Hepatol. 2018 Aug;17(5):752-755.
  • Trieu JA, Bilal M, Hmoud B. Factors Associated with Waiting Time on the Liver Transplant List: An Analysis of the United Network for Organ Sharing (UNOS) Database. Ann Gastroenterol. 2018 Jan-Feb;31(1):84-89.
  • Trieu JA, Bilal M, Luthra G. Vedolizumab as a Potential Culprit in the Development of Ovarian Teratoma? Case Rep Gastroenterol. 2017 Dec 21;11(3):786-790.
  • Li RT, Zahedi S, Trieu JA, Lea AS, Calhoun WJ, Duarte AG, Zhao J, Okereke IC. Post-transplant native pneumonectomy for interstitial fibrosis and small cell lung cancer. J Thorac Dis. 2017 Dec;9(12):E1096-E1099.
  • Trieu JA, Bilal M, Hashmi A. Endoscopic Appearance of Multifocal Primary Gastric Diffuse Large B-Cell Lymphoma. Clin Gastroenterol Hepatol. 2018 Feb;16(2):e15-e16.
  • Tong MJ, Trieu JA. Hepatitis B inactive carriers: clinical course and outcomes. J Dig Dis. 2013 Jun;14(6):311-7.