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Lukas F. Mager Carsten Riether Christian M. Schürch Yara Banz Marie-Hélène Wasmer Regula Stuber Alexandre P. Theocharides Xiaohong Li Yu Xia Hirohisa Saito Susumu Nakae Gabriela M. Baerlocher Markus G. Manz Kathy D. McCoy Andrew J. Macpherson Adrian F. Ochsenbein Bruce Beutler Philippe Krebs 《The Journal of clinical investigation》2015,125(7):2579-2591
Myeloproliferative neoplasms (MPNs) are characterized by the clonal expansion of one or more myeloid cell lineage. In most cases, proliferation of the malignant clone is ascribed to defined genetic alterations. MPNs are also associated with aberrant expression and activity of multiple cytokines; however, the mechanisms by which these cytokines contribute to disease pathogenesis are poorly understood. Here, we reveal a non-redundant role for steady-state IL-33 in supporting dysregulated myelopoiesis in a murine model of MPN. Genetic ablation of the IL-33 signaling pathway was sufficient and necessary to restore normal hematopoiesis and abrogate MPN-like disease in animals lacking the inositol phosphatase SHIP. Stromal cell–derived IL-33 stimulated the secretion of cytokines and growth factors by myeloid and non-hematopoietic cells of the BM, resulting in myeloproliferation in SHIP-deficient animals. Additionally, in the transgenic JAK2V617F model, the onset of MPN was delayed in animals lacking IL-33 in radio-resistant cells. In human BM, we detected increased numbers of IL-33–expressing cells, specifically in biopsies from MPN patients. Exogenous IL-33 promoted cytokine production and colony formation by primary CD34+ MPN stem/progenitor cells from patients. Moreover, IL-33 improved the survival of JAK2V617F-positive cell lines. Together, these data indicate a central role for IL-33 signaling in the pathogenesis of MPNs. 相似文献
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Laura R. Saslow Shannon McCoy Ilmo van der Löwe Brandon Cosley Arbi Vartan Christopher Oveis Dacher Keltner Judith T. Moskowitz Elissa S. Epel 《Psychophysiology》2014,51(3):257-266
What can a speech reveal about someone's state? We tested the idea that greater stress reactivity would relate to lower linguistic cognitive complexity while speaking. In Study 1, we tested whether heart rate and emotional stress reactivity to a stressful discussion would relate to lower linguistic complexity. In Studies 2 and 3, we tested whether a greater cortisol response to a standardized stressful task including a speech (Trier Social Stress Test) would be linked to speaking with less linguistic complexity during the task. We found evidence that measures of stress responsivity (emotional and physiological) and chronic stress are tied to variability in the cognitive complexity of speech. Taken together, these results provide evidence that our individual experiences of stress or “stress signatures”—how our body and mind react to stress both in the moment and over the longer term—are linked to how complex our speech under stress. 相似文献
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Gina M. Howell MD Sally E. Carty MD Michaele J. Armstrong PhD Michael T. Stang MD Kelly L. McCoy MD David L. Bartlett MD Linwah Yip MD FACS 《Annals of surgical oncology》2013,20(11):3491-3496