Catherine Grandpeix-Guyodo

Learn More
Adult mastocytosis is an incurable clonal disease associated with c-KIT mutations, mostly in exon 17 (D816V). In contrast, pediatric mastocytosis often spontaneously regresses and is considered a reactive disease. Previous studies on childhood mastocytosis assessed only a few patients and focused primarily on codon 816 mutations, with various results. In(More)
BACKGROUND Mastocytosisis a rare disease associated with chronic symptoms related to mast cell mediator release. Patients with mastocytosis display high level of negative emotionality such as depression and stress sensibility. Brain mast cells are mainly localized in the diencephalon, which is linked to emotion regulatory systems. Negative emotionality has(More)
BACKGROUND Mastocytosis is a heterogeneous disease characterized by mast cell accumulation in 1 or more organs. Gastrointestinal manifestations of systemic mastocytosis have been previously studied in small cohorts of patients, and no specific histologic description is available. OBJECTIVE We sought to assess the clinical and pathologic features of(More)
Treatment options for patients suffering from indolent forms of mastocytosis remain inadequate with the hyperactivation of mast cells responsible for many of the disease's systemic manifestations. Masitinib is a potent and highly selective oral tyrosine kinase inhibitor. A combined inhibition of c-Kit and Lyn make it particularly efficient in controlling(More)
We do not know why the response to IgE cross-linking was greater in nonatopic individuals. Both atopic and nonatopic individuals expressed IgE on their cDCs, although expression was higher on cDCs from atopic subjects (20.4 6 7.1 vs 12.3 6 9.6, mean fold mean fluoresence intensity (MFI) 6 SEM, atopic vs nonatopic), similar to what has been reported. Perhaps(More)
Converging sources of evidence point to a role for inflammation in the development of depression, fatigue and cognitive dysfunction. More precisely, the tryptophan (TRP) catabolism is thought to play a major role in inflammation-induced depression. Mastocytosis is a rare disease in which chronic symptoms, including depression, are related to mast cell(More)
The hypereosinophilic syndromes (HES), defined by an unexplained and sustained hypereosinophilia, can be associated with heterogeneous hematological conditions. Several molecular mechanisms underlying the eosinophilia, which remained indeterminate for a long time, have been recently identified. These recent advances allowed a better classification of the(More)
Mastocytosis is a heterogeneous group of diseases with a young median age at diagnosis. Usually indolent and self-limited in childhood, the disease can exhibit aggressive progression in mid-adulthood. Our objectives were to describe the characteristics of the disease when diagnosed among elderly patients, for which rare data are available.The French(More)