Aberrant angiogenesis is implicated in diseases affecting nearly 10%of the world’s *** most widely used antiangiogenic drug is bevacizumab,a humanized IgG1 monoclonal antibody that targets human *** bevacizumab does ...
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Aberrant angiogenesis is implicated in diseases affecting nearly 10%of the world’s *** most widely used antiangiogenic drug is bevacizumab,a humanized IgG1 monoclonal antibody that targets human *** bevacizumab does not recognize mouse Vegfa,it inhibits angiogenesis in *** we show bevacizumab suppressed angiogenesis in three mouse models not via Vegfa blockade but rather Fc-mediated signaling through FcγRI(CD64)and c-Cbl,impairing macrophage *** approved humanized or human IgG1 antibodies without mouse targets(adalimumab,alemtuzumab,ofatumumab,omalizumab,palivizumab and tocilizumab),mouse IgG2a,and overexpression of human IgG1-Fc or mouse IgG2a-Fc,also inhibited angiogenesis in wild-type and FcγR humanized *** anti-angiogenic effect was abolished by Fcgr1 ablation or knockdown,Fc cleavage,IgG-Fc inhibition,disruption of Fc-FcγR interaction,or elimination of FcRγ-initated ***,bevacizumab’s Fc region potentiated its anti-angiogenic activity in humanized VEGFA ***,mice deficient in FcγRI exhibited increased developmental and pathological *** findings reveal an unexpected anti-angiogenic function for FcγRI and a potentially concerning off-target effect of hIgG1 therapies.
Introduction Bioavailability and toxicity of selenium(Se) are strongly related to the chemical form(Hartikainen, 2005).Organic Se forms are less toxic,but are significantly important in functional foods,food and feed ...
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Introduction Bioavailability and toxicity of selenium(Se) are strongly related to the chemical form(Hartikainen, 2005).Organic Se forms are less toxic,but are significantly important in functional foods,food and feed supplements because of their increased *** is applied for the industrial production of selenium-methionine from inorganic Se(Rayman,2004).Recent interest in the field of nanotechnology has stimulated research into the chemical synthesis of Se *** on the reduction of selenite to elemental Se by sulphate reducing,Se respiring bacteria was published for first time in the 1990s(Tomeiet al.,1995).
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