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  • 1
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2009
    In:  Annals of Hematology Vol. 88, No. 10 ( 2009-10), p. 1037-1038
    In: Annals of Hematology, Springer Science and Business Media LLC, Vol. 88, No. 10 ( 2009-10), p. 1037-1038
    Type of Medium: Online Resource
    ISSN: 0939-5555 , 1432-0584
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2009
    detail.hit.zdb_id: 1458429-3
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  • 2
    In: Blood, American Society of Hematology, Vol. 110, No. 11 ( 2007-11-16), p. 4445-4445
    Abstract: Oral mucositis is a frequent problem in high-dose methotrexate (HD-MTX) based chemotherapy, impairing the patient’s quality of life, leading to higher rates of infections and delaying subsequent chemotherapy. Numerous substances have been used to prevent or treat oral mucositis, but none of them has proven clinical benefit. Palifermin, a recombinant human keratinocyte growth factor, can lead to a prevention of oral mucositis by different effects. Clinical activity of palifermin has been proven in a controlled randomized study with patients undergoing high-dose therapy with autologous stem cell rescue. The purpose of this report is to describe the effect of palifermin in patients treated within the GMALL-B-ALL 2002 protocol containing HD-MTX who developed a severe mucositis in cycles A1 or B1. Ten patients who were treated within this protocol developed a severe WHO grade III–IV oral mucositis in cycles A1 or B1. Before and after the subsequent similar or identical cycles A2 or B2 palifermin was given to reduce the risk of mucositis. Thus, patients serve as their own control for efficacy of palifermin. All ten patients developed a grade III–IV mucositis in cycles A1 or B1 without palifermin, whereas only 2/10 developed a grade III–IV mucositis in corresponding cycles A2 or B2 with palifermin (Mann-Whitney-Wilcoxon-test p 〈 0.05). Five patients were treated with a lower palifermin dose than recommended. Also these patients did not develop a higher grade mucositis. Only 4/10 patients showed infections in the cycles with palifermin compared to 10/10 patients without palifermin. The duration of mucositits in patients who aquired a higher-grade (III, IV) mucositis despite treatment with palifermin could be reduced from 12.9 days (median) without to 10.4 days with palifermin. In conclusion, palifermin can significantly reduce the incidence and severeness of oral mucositis and may influence clinical sequelae such as infection and quality of life.
    Type of Medium: Online Resource
    ISSN: 0006-4971 , 1528-0020
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Hematology
    Publication Date: 2007
    detail.hit.zdb_id: 1468538-3
    detail.hit.zdb_id: 80069-7
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  • 3
    In: Blood, American Society of Hematology, Vol. 105, No. 5 ( 2005-03-01), p. 2107-2114
    Abstract: Activating fetal liver tyrosine kinase 3 (Flt3) mutations represent the most common genetic aberrations in acute myeloid leukemia (AML). Most commonly, they occur as internal tandem duplications in the juxtamembrane domain (Flt3-ITD) that transform myeloid cells in vitro and in vivo and that induce aberrant signaling and biologic functions. We identified RGS2, a regulator of G-protein signaling, as a gene specifically repressed by Flt3-ITD. Here we demonstrate an important role of RGS2 in Flt3-ITD–mediated transformation. RGS2 was repressed after forced expression of activating Flt3 mutations in 2 myeloid cell lines (32Dcl3 and NB4). Furthermore, RGS2 was repressed in Flt3-mutation–positive AML cases in comparison to Flt3-mutation–negative cases, especially in Flt3-ITD–positive cases with a high ITD-to–wild-type (WT) ratio. Coexpression of RGS2 with Flt3-ITD inhibited Flt3-ITD–induced autonomous proliferation and clonal growth of 32D cells. RGS2 also inhibited Flt3-ITD–induced phosphorylation of Akt and glycogen synthase kinase β (Gsk3-β) without influencing signal transducer and activator of transcription 5 (STAT5) activation. In addition, RGS2 reinduced the expression of Flt3-ITD–repressed CCAAT/enhancer-binding protein α (c/EBPα) and antagonized the Flt3-ITD–induced differentiation block in 32D cells. Expression analyses in myeloid cell lines revealed induction of RGS2 during granulocytic but not during monocytic differentiation. Taken together, RGS2 is a novel mediator of myeloid differentiation, and its repression is an important event in Flt3-ITD–induced transformation.
    Type of Medium: Online Resource
    ISSN: 0006-4971 , 1528-0020
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Hematology
    Publication Date: 2005
    detail.hit.zdb_id: 1468538-3
    detail.hit.zdb_id: 80069-7
    Location Call Number Limitation Availability
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