Dr. Baldassano’s research focuses on children who have inflammatory bowel diseases, and he oversees a large team of researchers at CHOP working to translate discoveries in the laboratory into direct patient care for children. One promising area of current research involves investigating the intestinal microbiomes of children with inflammatory bowel diseases.
Dr. Puopolo helped lead the research team that developed and validated multivariate prediction models for neonatal early-onset sepsis risk assessment. Her current research addresses the impacts of maternal immunity, perinatal antibiotic exposure, and neonatal infection on infant and childhood health.
Dr. Silverman studies the fundamental aspects of early-life commensal microbes that influence immune system development and function. He discovered that the MHC-II E molecule prevents type 1 diabetes by shaping the intestinal microbiota early in life.
Dr. Tasian and his research team use an epidemiologic framework, including randomized trials and multi-institutional observational studies, to examine the etiology of kidney stone disease and the comparative effectiveness of surgical interventions. He also employs machine learning of complex data to improve diagnosis, risk stratification, and prediction of treatment response for children and adults with benign urologic disease.
Dr. Zemel's overall research program aims to improve the understanding of lifelong health and how it relates to childhood antecedents of physical growth and maturation, body composition, population ancestry/genetics, and lifestyle factors. Such insight has practical implications for disease prevention and lifelong wellness, as well as broader scientific implications for understanding human plasticity and evolution.
Dr. Weiss' research focuses on epidemiology of pediatric sepsis and mitochondrial dysfunction in sepsis-associated organ injury. The driving hypothesis for his research is that alterations in mitochondrial bioenergetics contribute to organ injury and immune dysregulation in a subset of children with sepsis.
Dr. Hill seeks to understand how the immune system contributes to the two most common chronic diseases of childhood: allergy and obesity. He uses clinical and epidemiological information to guide basic and translational research on the genetic, epigenetic, and immunologic basis of these important conditions.
Dr. Zackular's research is focused on understanding how interactions between the host, gut microbiota, and pathogenic microbes impact human health and disease. His recent efforts center on understanding how the important nosocomial pathogen, Clostridium difficile, interacts with resident gut microbiota during infection and how interspecies cross-talk impacts growth, behavior, and virulence of this pathogen.
Mary Ellen Vajravelu, MD, MSHP, is a pediatric endocrinologist in the Division of Endocrinology and Diabetes at Children’s Hospital of Philadelphia. She treats all pediatric endocrine conditions, but she has special expertise in prediabetes and type 2 diabetes in children and adolescents.