نتایج جستجو برای: jak2v617f
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سابقه و هدف: بیماری التهابی روده (Inflammatory Bowel Disease)، شامل کولیت اولسراتیو (Ulcerative Colitis) و بیماری کرون (Crohn’s Disease)، یک اختلال التهابی مزمن دستگاه گوارش است که مطالعات گسترده ژنومی (Genome-wide association study) نشان می‌دهد که برخی از ژن‌های مسیر اینترلوکین-23/T کمکی 17 (IL-23/Th17) مانند جانوس کیناز -2 (JAK2) مستعدکننده ابتلا به بیماری التهابی روده هستند. هاپلوتایپ 46/1 ...
Association of myeloproliferative neoplasm (MPN) with lymphoproliferative neoplasm (LPN) has been occasionally reported. The aim of this study, which included 353 patients with polycythemia vera and 467 with essential thrombocythemia, was to assess whether the risk of developing LPN is increased in MPN patients. Expected numbers of LPN incident cases were calculated based on 5-year age group, g...
background and objectives: jak2 is a nonreceptor tyrosine kinase that plays a major role in myeloid disorders. jak2v617f mutation is characterized by a g to t transverse at nucleotide 1849 in exon 12 of the jak2 gene, located on the chromosome 9p, leading to a substitution of valine to phenylalanine at amino acid position 617 in the jak2 protein. in this study we compared two molecular methods ...
and inflammatory conditions including immune-mediated bone marrow failure and the often-profound pancytopenia seen in those patients treated with interferons. Apparently , IFN-␣ and IFN-␥ have similar effects in this Irgm1 pathway (Margaret Goodell, personal communication, June 2011). These observations have immediate clinical consequences as an easier-to-tolerate pegy-lated form of IFN-␣ has b...
Calreticulin (CALR) mutations occur in 20%-25% of myeloproliferative neoplasms (MPN). At least 40 CALR mutations have been reported to date, all located in exon 9. The most frequent CALR mutations are a 52-bp deletion (type 1) and a 5-bp insertion (type 2). Expression of type 1 CALR mutation was shown to induce constitutive activation of JAK-STAT signaling pathway in a Ba/F3-cell line with STAT...
Myeloproliferative neoplasms (MPNs) are a heterogeneous group of leukemias with defective regulation of myeloid stem cell proliferation. They include four distinct diseases: chronic myeloid leukemia, polycythemia vera (PV), essential thrombocythemia (ET) and primary myelofibrosis (PMF). In 2005, four independent studies have concurred to the identification in MPN patients of a specific mutation...
A high percentage of patients with the myeloproliferative disorder polycythemia vera (PV) harbor a Val617→Phe activating mutation in the Janus kinase 2 (JAK2) gene, and both cell culture and mouse models have established a functional role for this mutation in the development of this disease. We describe the properties of MRLB-11055, a highly potent inhibitor of both the WT and V617F forms of JA...
jak2 is a tyrosine kinase that plays an important role in the signaling pathways of many hematopoietic growth factor receptors. a single acquired point mutation – v617f – in jak2 occurs in the great majority of patients with polycythemia vera (pv) and approximately half of the patients with idiopathic myelofibrosis (imf) or essential thrombocythemia (et). in contrast, the jak2-v617f mutation is...
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