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Found 2 results

  1. Celiac.com 11/28/2011 - Celiac disease often results in "leaky" intestinal mucosa. This development may involve changes in hydrophobicity of the mucus surface barrier along with changes of the epithelial barrier. A team of researchers recently compared bio-physical aspects of gastrointestinal mucosa of celiac patients with control subjects, along with the effects of gluten free diet on each group. The research team included Stefania Bertolazzi, Francesco Lanzarotto, Barbara Zanini, Chiara Ricci, Vincenzo Villanacci, and Alberto Lanzini. The team set out to compare duodenal hydrophobicity as an index of mucus barrier integrity in 38 patients studied before and 68 patients during gluten-free diet, and in 90 control subjects. They also checked for regional differences of hydrophobicity in the gastro-intestinal tract. The team gauged hydrophobicity by measuring the contact angle (CA) (Rame Hart 100/10 goniometer) created by a single drop of water applied to intestinal mucosal biopsies. Once the team pooled the results and evaluated the control groups, patients with histologically normal duodenal biopsies showed significantly higher CA (620 + 90) than patients with biopsies showing Marsh 1-2 (580 + 100; p<0.02) and Marsh 3 lesions (570+ 100; p<0.02). Among the control group, the action sequence of hydrofobicity along the gastrointestinal tract follows the pattern: gastric antrum> corpus> rectum> duodenum> oesophagus> ileum. From these results, the team concludes that people with celiac disease experience reduced hydrophobicity of duodenal mucous layer, and a reduced ability to repel luminal contents. This may may contribute to the increased intestinal permeability seen in celiac disease. This change in hydrofobicity corresponds to the severity of the mucosal lesions in the patient, and is not completely reversed by gluten-free diet. Source: BMC Gastroenterology 2011, 11:119 doi:10.1186/1471-230X-11-119
  2. Celiac.com 03/19/2002 - For the past several years, Gary M. Gray, M.D. and Chaitan Khosla, Ph.D., both at Stanford University, have been studying the underlying causes of Celiac Disease, with an eye toward finding a therapeutic solution that would not require the strict adherence to a gluten-free diet. For the past two years, I have helped organize the Celiac conference at Stanford University; and we have collected blood from Celiac volunteers for their research. Based on a series of studies involving animal tissue, Drs. Gray, Khosla, and coworkers have developed a hypothesis for the cause of the disease. Their findings in animal studies need to be confirmed on human tissue, and any differences in normal and Celiac intestine must be defined. The Stanford researchers are now in need of volunteers who are scheduled for a follow-up biopsy as part of their optimal care to provide intestinal tissue samples. Volunteers must be biopsy-diagnosed Celiacs who, as part of their care, will be undergoing an upper gastrointestinal endoscopy for recovery of small biopsies from the duodenum. For this research, two small (a few milligrams) of additional tissue will be taken during the biopsy, frozen immediately, and transported to Stanford. Please note that volunteers undergoing procedures at locations other than Stanford Hospital could participate. The small amount of additional tissue does not constitute a significant additional risk over and above that you will undergo due to the endoscopy and routine biopsies for the pathologist to examine. The research has been approved by the Human Subjects Committee at Stanford University Medical Center. If you would like to participate in this study, please contact Kelly Rohlfs at 650-725-4771 or kellyr@bonair.stanford.edu.If you have questions concerning the risks and benefits of this study, please contact Dr. Gray at 650-725-3366 or gray@stanford.edu. Dr. Gray will coordinate the study with your gastroenterologist at the time of your endoscopy.
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