@article {1610, title = {Gastrointestinal Foxp3 expression in normal, inflammatory and neoplastic conditions.}, journal = {Pathology}, volume = {43}, year = {2011}, month = {2011 Aug}, pages = {465-71}, abstract = {

BACKGROUND: Foxp3(+) regulatory T lymphocytes (T-regs) represent an important regulatory cell subset in inflammatory, preneoplastic and neoplastic conditions of the gastrointestinal tract.

METHODS: Inflammatory, preneoplastic and neoplastic conditions of the gastrointestinal tract (189 cases) were studied with the evaluation of Foxp3 regulatory T cells based on immunohistochemistry.

RESULTS: Few Foxp3(+) cells were found in controls and inflammatory conditions (oesophagitis, gastritis, coeliac disease, inflammatory bowel disease); in preneoplastic and neoplastic conditions the number of Foxp3(+) cells was significatively increased.

CONCLUSIONS: In normal conditions the number of mucosal lymphocytes is very low throughout the gastro-intestinal tract; in active coeliac disease patients or on a gluten-free diet, only a slight increase in Foxp3(+) cells may be found. Gastrointestinal cancers are associated with higher Foxp3(+) cell proportion, compared with microscopically normal tissue and with precancerous conditions. However, it is uncertain whether the increase in these regulatory cells is a cause or a consequence of tumour progression.

}, keywords = {Adult, Aged, Celiac Disease, Cell Count, Disease Progression, Esophagitis, Female, Forkhead Transcription Factors, Gastric Mucosa, Gastritis, Humans, Inflammatory Bowel Diseases, Lymphocytes, Male, Middle Aged, Precancerous Conditions, Stomach Diseases, Stomach Neoplasms, Young Adult}, issn = {1465-3931}, doi = {10.1097/PAT.0b013e3283485e37}, author = {Villanacci, Vincenzo and Not, Tarcisio and Nascimbeni, Riccardo and Ferrara, Fortunato and Tommasini, Alberto and Manenti, Stefania and Antonelli, Elisabetta and Bassotti, Gabrio} }