PEDIATRIC GASTROENTEROLOGISTS & NUTRITIONISTS


Call : 716-878-7793for appointments or information

WENSHENG LIU, PhD

Wensheng Liu, PhD is a Research Assistant Professor. Dr. Liu received his Ph.D. in Pharmacology from University of Buffalo. He completed his postdoctoral training in Roswell Park Cancer Institute. His research was focused on the molecular mechanisms of breast cancer. Dr. Liu joined our research laboratory in July, 2009. His research interests include the molecular pathogenesis and non-invasive biomarkers of Pediatric Nonalcoholic Steatohepatitis.

LIXIN ZHU PhD, Research Scientist

COLLEEN NUGENT MD, MS

Colleen Nugent is a Buffalo born and trained physician.  She obtained her Bachelor of Science from Canisius College.  Prior to attending medical school she completed her Master's of Science in Exercise Science and Nutrition at University at Buffalo.  After graduate school she attended the State University of New York at Buffalo School of Medicine.  Moving across town, Women and Children's Hospital of Buffalo welcomed her to the General Pediatrics residency program which she completed in June 2012 after which she joined the Pediatric Gastroenterology  & Nutrition fellowship program at the University of Buffalo in July 2012.  Dr. Nugent was awarded the ACGME David Leach Award for Humanistic Patient Care in Teaching in 2010.  She remains very active in many aspects of humanistic patient care as physician leader of Schwartz Rounds as well as teaching residents and medical students.  Her interests in GI include nutritional management of GI diseases.  Current research focus on psychological effect of chronic disease.  She is Board certified in Pediatrics.  She is boarded in Pediatrics and pediatric Gastroenterology. 

Faculty


SUSAN S. BAKER MD, PhD

Susan S. Baker obtained her BS at the University of Pittsburgh, MD at Temple University School of Medicine, and PhD at Massachusetts Institute of Technology. Dr. Baker completed her residency in Pediatrics at Children's Hospital of Buffalo and her fellowship in gastroenterology at the Combined Program at Massachusetts General Hospital and Children's Hospital of Boston. Dr. Baker worked in Africa and established two new programs in Gastroenterology and Nutrition, at the University of Massachusetts Medical Center and the Medical University of South Carolina before coming to Buffalo. Dr. Baker published many peer-reviewed articles, chapters, reviews, edited four medical textbooks and one non-medical book. Dr. Baker is recognized as a leader in the field, having served as the Chairperson of the American Academy of Pediatrics, Committee on Nutrition, the Chairperson of the American Board of Pediatrics, sub-board of Gastroenterology and numerous other national and international advisory groups including the Institute of Medicine, USDA and the FDA representative to the CODEX expert committee on infant formula.  Dr. Baker is listed as a Best Doctor continuously since 1996.
Dr. Baker sees patients, performs procedures, directs research, and serves as the Laboratory Director for the Gastroenterology Laboratory at Women and Children's Hospital of Buffalo.  Dr. Baker is the Program Director for the Pediatric GI Fellowship program.

DIANA MOYA-ORJUELA MD

Dr. Moya received her Medical Degree from the Universidad de la Sabana in Bogota, Colombia in 2003. After practicing for a few years as an in-house physician in her home country, she moved to the USA. She completed her pediatrics training at the University of South Alabama Pediatric Residency Program in June 2010. Subsequently, she joined the Pediatric Gastroenterology Hepatology and Nutrition Fellowship Program at the University at Buffalo. During her residency training, Dr. Moya received the Robert O. Harris, III Award granted to the best second year resident in 2009. She also received the Core Curriculum Hall of Fame Award for excellent performance in Core Curriculum series for two consecutive years. Her interest in GI includes small bowel pathology and inflammatory bowel disease.

Lixin Zhu, PhD is an Assistant Professor.  He is responsible for the overall administration and direction of the laboratory based research projects.
After graduation from Nankai University, a top research university in China, he was accepted into the graduate program in Shanghai Institute of Biochemistry, the Chinese Academy of Sciences.  With his mentors, Professors Guang-Di Li and Yuan Wang, he studied the molecular virology of hepatitis C and developed attenuated live-viral vaccines against hepatitis C, using the modified vaccinia virus Ankara stain as the vector.  In this collaborative work, he, Professor Wang’s group and Dr. Gerd Sutter’s group (then in the Institute for Molecular Virology, GSF, Munich, Germany) demonstrated that the invented vaccines are able to elicit protective humoral and cellular immune responses targeting hepatitis C antigens in a murine model.
His postdoc research was all about gastric parietal cell.  His major work was focused on a phosphoprotein called ezrin.  This protein is discovered in parietal cell(4) and other cells almost simultaneously.  Using FRET (fluorescence resonance energy transfer) technique, he studied ezrin conformation in a relatively native state.  With his mentor Dr. John G. Forte (University of California, Berkeley), he demonstrated how ezrin phosphorylation regulates the conformation and activity of this protein and the effects on parietal cell acid secretion.  His discovery that ezrin phosphorylation is underwent fast turnover may shed light on similar phosphorylation events in different model systems.  Besides this, he also participated in the studies of parietal cell membrane trafficking, in collaboration with Dr. Serhan Karvar (University of Southern California).
He current research interests are expanded from gastric parietal cell into the whole GI tract.  Currently he is working to identify biomarkers for NASH and other GI diseases, to better understand the pathophysiology of these diseases for better diagnosis and treatments.

ROBERT D. BAKER MD, PhD

Robert D. Baker obtained his BA at Harvard University, MD at Temple University School of Medicine, PhD at Massachusetts Institute of Technology. Dr. Baker completed his residency in Pediatrics at Children's Hospital of Buffalo and his fellowship in gastroenterology at the Combined Program at Massachusetts General Hospital and Children's Hospital of Boston. Dr. Baker has worked in Africa and established two new programs in Gastroenterology and Nutrition, at the University of  Massachusetts Medical Center and the Medical University of South Carolina before coming to Buffalo. Dr. Baker has numerous publication in peer reviewed journals, chapters, and reviews. He has edited four medical textbooks. Dr. Baker is nationally recognized as a leader currently serving on the Executive Board of the Section of Gastroenterology, Nutrition and Hepatology of the American Academy of Pediatrics. Dr. Baker is listed as a Best Doctor continuously since 1996.
Dr. Baker sees patients, performs procedures, directs research, and serves as the Medical Director of the Variety 4 Procedure Area and the Tanner 8 Infusion Area. Robert Baker is boarded in Pediatrics and Pediatric Gastroenterology.

Call : 716-878-7793 for appointments or information