<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Naviglio, Samuele</style></author><author><style face="normal" font="default" size="100%">Arrigo, Serena</style></author><author><style face="normal" font="default" size="100%">Martelossi, Stefano</style></author><author><style face="normal" font="default" size="100%">Villanacci, Vincenzo</style></author><author><style face="normal" font="default" size="100%">Tommasini, Alberto</style></author><author><style face="normal" font="default" size="100%">Loganes, Claudia</style></author><author><style face="normal" font="default" size="100%">Fabretto, Antonella</style></author><author><style face="normal" font="default" size="100%">Vignola, Silvia</style></author><author><style face="normal" font="default" size="100%">Lonardi, Silvia</style></author><author><style face="normal" font="default" size="100%">Ventura, Alessandro</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Severe inflammatory bowel disease associated with congenital alteration of transforming growth factor beta signaling.</style></title><secondary-title><style face="normal" font="default" size="100%">J Crohns Colitis</style></secondary-title><alt-title><style face="normal" font="default" size="100%">J Crohns Colitis</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Child, Preschool</style></keyword><keyword><style  face="normal" font="default" size="100%">Colon</style></keyword><keyword><style  face="normal" font="default" size="100%">Colonoscopy</style></keyword><keyword><style  face="normal" font="default" size="100%">Female</style></keyword><keyword><style  face="normal" font="default" size="100%">Humans</style></keyword><keyword><style  face="normal" font="default" size="100%">Infant</style></keyword><keyword><style  face="normal" font="default" size="100%">Inflammatory Bowel Diseases</style></keyword><keyword><style  face="normal" font="default" size="100%">Loeys-Dietz Syndrome</style></keyword><keyword><style  face="normal" font="default" size="100%">Male</style></keyword><keyword><style  face="normal" font="default" size="100%">Signal Transduction</style></keyword><keyword><style  face="normal" font="default" size="100%">Transforming Growth Factor beta</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2014</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2014 Aug</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">8</style></volume><pages><style face="normal" font="default" size="100%">770-4</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Transforming growth factor beta is a pleiotropic cytokine which plays a central role in the homeostasis of the immune system. A complex dysregulation of its signaling occurs in Loeys-Dietz syndrome, a monogenic disorder caused by mutations of transforming growth factor beta receptors type 1 or type 2, characterized by skeletal involvement, craniofacial abnormalities, and arterial tortuosity with a strong predisposition for aneurysm and dissection. In addition, several immunologic abnormalities have been described in these patients, including an increased risk of allergic disorders as well as eosinophilic gastrointestinal disorders. The occurrence of inflammatory bowel disorders has been also reported, but it is poorly documented. We describe two unrelated children with Loeys-Dietz syndrome affected by severe chronic inflammatory colitis appearing at an early age. The intestinal disease presented similar features in both patients, including a histopathological picture of non-eosinophilic chronic ulcerative colitis, striking elevation of inflammatory markers, and a distinctly severe clinical course leading to failure to thrive, with resistance to multiple immunosuppressive treatments. One of the patients also presented autoimmune thyroiditis. Our report confirms that chronic ulcerative colitis may be associated with Loeys-Dietz syndrome. This finding suggests that an alteration of transforming growth factor beta signaling may by itself predispose to inflammatory colitis in humans, and represent an invaluable model to understand inflammatory bowel diseases.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">8</style></issue><custom1><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/24486179?dopt=Abstract</style></custom1></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Passerini, Laura</style></author><author><style face="normal" font="default" size="100%">Olek, Sven</style></author><author><style face="normal" font="default" size="100%">Di Nunzio, Sara</style></author><author><style face="normal" font="default" size="100%">Barzaghi, Federica</style></author><author><style face="normal" font="default" size="100%">Hambleton, Sophie</style></author><author><style face="normal" font="default" size="100%">Abinun, Mario</style></author><author><style face="normal" font="default" size="100%">Tommasini, Alberto</style></author><author><style face="normal" font="default" size="100%">Vignola, Silvia</style></author><author><style face="normal" font="default" size="100%">Cipolli, Marco</style></author><author><style face="normal" font="default" size="100%">Amendola, Mario</style></author><author><style face="normal" font="default" size="100%">Naldini, Luigi</style></author><author><style face="normal" font="default" size="100%">Guidi, Luisa</style></author><author><style face="normal" font="default" size="100%">Cecconi, Massimiliano</style></author><author><style face="normal" font="default" size="100%">Roncarolo, Maria G</style></author><author><style face="normal" font="default" size="100%">Bacchetta, Rosa</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Forkhead box protein 3 (FOXP3) mutations lead to increased TH17 cell numbers and regulatory T-cell instability.</style></title><secondary-title><style face="normal" font="default" size="100%">J Allergy Clin Immunol</style></secondary-title><alt-title><style face="normal" font="default" size="100%">J. Allergy Clin. Immunol.</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Forkhead Transcription Factors</style></keyword><keyword><style  face="normal" font="default" size="100%">Gene Expression Regulation</style></keyword><keyword><style  face="normal" font="default" size="100%">Genetic Diseases, X-Linked</style></keyword><keyword><style  face="normal" font="default" size="100%">Humans</style></keyword><keyword><style  face="normal" font="default" size="100%">Immunologic Deficiency Syndromes</style></keyword><keyword><style  face="normal" font="default" size="100%">Intestinal Diseases</style></keyword><keyword><style  face="normal" font="default" size="100%">Male</style></keyword><keyword><style  face="normal" font="default" size="100%">Mutation</style></keyword><keyword><style  face="normal" font="default" size="100%">Polyendocrinopathies, Autoimmune</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2011 Dec</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">128</style></volume><pages><style face="normal" font="default" size="100%">1376-1379.e1</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><issue><style face="normal" font="default" size="100%">6</style></issue><custom1><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/22000569?dopt=Abstract</style></custom1></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Passerini, Laura</style></author><author><style face="normal" font="default" size="100%">Di Nunzio, Sara</style></author><author><style face="normal" font="default" size="100%">Gregori, Silvia</style></author><author><style face="normal" font="default" size="100%">Gambineri, Eleonora</style></author><author><style face="normal" font="default" size="100%">Cecconi, Massimiliano</style></author><author><style face="normal" font="default" size="100%">Seidel, Markus G</style></author><author><style face="normal" font="default" size="100%">Cazzola, Giantonio</style></author><author><style face="normal" font="default" size="100%">Perroni, Lucia</style></author><author><style face="normal" font="default" size="100%">Tommasini, Alberto</style></author><author><style face="normal" font="default" size="100%">Vignola, Silvia</style></author><author><style face="normal" font="default" size="100%">Guidi, Luisa</style></author><author><style face="normal" font="default" size="100%">Roncarolo, Maria G</style></author><author><style face="normal" font="default" size="100%">Bacchetta, Rosa</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Functional type 1 regulatory T cells develop regardless of FOXP3 mutations in patients with IPEX syndrome.</style></title><secondary-title><style face="normal" font="default" size="100%">Eur J Immunol</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Eur. J. Immunol.</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cell Differentiation</style></keyword><keyword><style  face="normal" font="default" size="100%">Cell Lineage</style></keyword><keyword><style  face="normal" font="default" size="100%">Cells, Cultured</style></keyword><keyword><style  face="normal" font="default" size="100%">Enteritis</style></keyword><keyword><style  face="normal" font="default" size="100%">Forkhead Transcription Factors</style></keyword><keyword><style  face="normal" font="default" size="100%">Genetic Diseases, X-Linked</style></keyword><keyword><style  face="normal" font="default" size="100%">Humans</style></keyword><keyword><style  face="normal" font="default" size="100%">Immunity, Innate</style></keyword><keyword><style  face="normal" font="default" size="100%">Interleukin-2 Receptor alpha Subunit</style></keyword><keyword><style  face="normal" font="default" size="100%">Mutation</style></keyword><keyword><style  face="normal" font="default" size="100%">Polyendocrinopathies, Autoimmune</style></keyword><keyword><style  face="normal" font="default" size="100%">Syndrome</style></keyword><keyword><style  face="normal" font="default" size="100%">T-Lymphocytes, Regulatory</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2011 Apr</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">41</style></volume><pages><style face="normal" font="default" size="100%">1120-31</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Mutations of forkhead box p3 (FOXP3), the master gene for naturally occurring regulatory T cells (nTregs), are responsible for the impaired function of nTregs, resulting in an autoimmune disease known as the immune dysregulation, polyendocrinopathy, enteropathy, X-linked (IPEX) syndrome. The relevance of other peripheral tolerance mechanisms, such as the presence and function of type 1 regulatory T (Tr1) cells, the major adaptive IL-10-producing Treg subset, in patients with IPEX syndrome remains to be clarified. FOXP3(mutated) Tr1-polarized cells, differentiated in vitro from CD4(+) T cells of four IPEX patients, were enriched in IL-10(+) IL-4(-) IFN-γ(+) T cells, a cytokine production profile specific for Tr1 cells, and expressed low levels of FOXP3 and high levels of Granzyme-B. IPEX Tr1 cells were hypoproliferative and suppressive, thus indicating that FOXP3 mutations did not impair their function. Furthermore, we isolated Tr1 cell clones from the peripheral blood of one FOXP3(null) patient, demonstrating that Tr1 cells are present in vivo and they can be expanded in vitro in the absence of WT FOXP3. Overall, our results (i) show that functional Tr1 cells differentiate independently of FOXP3, (ii) confirm that human Tr1 and nTregs are distinct T-cell lineages, and (iii) suggest that under favorable conditions Tr1 cells could exert regulatory functions in IPEX patients.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">4</style></issue><custom1><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/21400500?dopt=Abstract</style></custom1></record></records></xml>