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Eosinophilic gastrointestinal disorders (EGIDs) are a series of growing medical problems characterized by excessive levels of eosinophils in various parts of the gastrointestinal tract. Specifically, these problems include:
When eosinophils accumulate in multiple parts of the gastrointestinal tract, this problem is called eosinophilic gastroenteritis. These medical problems cause a variety of difficulties including abdominal pain, reflux, difficulty growing, weight loss, vomiting, difficulty swallowing, diarrhea, and anemia (low hemoglobin or red blood cell count). Patients with EGIDs typically suffer from various combinations of these problems, making the clinical appearance very diverse and often very severe.
In some cases, the presence of an EGID is determined in patients without clinical symptoms (following endoscopy for other causes), further complicating the clinical presentation. Sadly, at present, many patients with EGIDs suffer for a number of years before a diagnosis of EGID is made. The team of professionals at Cincinnati Center for Eosinophilic Disorders is committed to educating parents, patients and physicians throughout the world about the proper diagnosis and best treatment of these problems.
EGIDs are being recognized more and more around the world. In fact, recent studies in Cincinnati have shown that one type of EGID, eosinophilic esophagitis, is even more common than other well-known diseases that affect the gastrointestinal tract such as Crohn's Disease and Cystic Fibrosis.
To address this growing medical problem, we have assembled a world-renowned group of comprehensive health care providers including allergists, gastroenterologists, pathologists, psychologists, nutritionists, nurses and researchers who work together to provide the best care of patients with EGIDs. We unite our best efforts to provide highly personalized care to each person we treat.
At Cincinnati Children's Hospital Medical Center, our research team has prioritized finding the best treatment and eventual cure for EGIDs. As such, we have determined that most EGIDs sufferers are allergic individuals who have sensitization to multiple food and airborne allergens.
Because of the link with allergy, most patients with EGIDs have been found to benefit by preventing their exposure to the offending allergens. Unfortunately, this often means very restricted diets for EGID sufferers, sometimes necessitating a formula diet and feeding through artificial tubes to allow for proper caloric and nutritional intake.
Research involves collecting comprehensive information from patients and their families including environmental exposures and the presence of other diseases and symptoms in patients and their family members. This has led to the finding that EGIDs often runs in families. We are currently studying the environmental and genetic factors that are responsible for this familial association.
We extend our care in a holistic/comprehensive approach by collecting genetic material (DNA) from patients and their family members. Using data from the human genome project and state-of-the-art DNA Chips, we are rapidly characterizing the spectrum of factors involved in the cause of these diseases. For example, we are identifying the specific factors that control the formation and activation of eosinophils.
In particular, the proteins that regulate eosinophil growth (interleukin-5 also know as IL-5) and accumulation (eotaxin) have been identified, and drugs that interfere with their function are being tested in pre-clinical models as well as patients. Research studies also involve testing the effect of dietary modifications and the optimal application of currently available medications for EGID therapy. Notably, we are finding that medicines used to treat allergies, such as asthma inhalers, can benefit EGID sufferers. Our research team is working in conjunction with the FDA and various companies to carry out clinical trials designed to find a rapid and effective treatment for EGIDs. Our current findings are promising and cutting-edge.
Our research team has also found that under normal conditions, eosinophils are white, immune blood cells that account for only a small fraction of the white cells in the blood (1-3%) and gastrointestinal tract. However, in EGIDs, the level of eosinophils can become very high, with eosinophils sometimes representing the predominant cell in the gastrointestinal segment and/or blood. Importantly, in EGIDs, eosinophils not only accumulate in the gastrointestinal tract but also become activated, resulting in tissue damage and inflammation. Each eosinophil is loaded with 200 drops (granules) of toxic chemicals and these toxins are released in the gastrointestinal tract of patients with EGIDs.
As a result, the patient's tissue is severely damaged and, thus, does not function properly. The occurrence of eosinophil accumulation and activation can only be monitored by endoscopy, which involves placing a fiber optic tube into the intestinal tract. Individuals with this problem have to undergo frequent surgical procedures (each typically associated with general anesthesia). We are committed to regulating this cellular activity and finding the most efficient and pain-free treatment possible.
Our laboratory-based research team consists of the following major faculty members:
Our clinical-based research team consists of the following major faculty members:
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