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Articles by S. A Mousa
Total Records ( 2 ) for S. A Mousa
  P. J Davis , F. B Davis , H. Y Lin , S. A Mousa , M Zhou and M. K. Luidens

A thyroid hormone receptor on integrin vβ3 that mediates cell surface-initiated nongenomic actions of thyroid hormone on tumor cell proliferation and on angiogenesis has been described. Transduction of the hormone signal into these recently recognized proliferative effects is by extracellular-regulated kinases 1/2 (ERK1/2). Other nongenomic actions of the hormone may be transduced by phosphatidylinositol 3-kinase (PI3K) and are initiated in cytoplasm or at the cell surface. PI3K-mediated effects are important to angiogenesis or other recently appreciated cell functions but apparently not to tumor cell division. For those actions of thyroid hormone [l-thyroxine (T4) and 3,3'-5-triiodo-l-thyronine (T3)] that begin at the integrin receptor, tetraiodothyroacetic acid (tetrac) is an inhibitor of and probe for the participation of the receptor in downstream intracellular events. In addition, tetrac has actions initiated at the integrin receptor that are unrelated to inhibition of the effects of T4 and T3 but do involve gene transcription in tumor cells. Discussed here are the implications of translating these nongenomic mechanisms of thyroid hormone analogs into clinical cancer cell biology, tumor-related angiogenesis, and modulation of angiogenesis that is not related to cancer.

  S. A Mousa , W. P Jeske and J. Fareed

Novel adenosine diphosphate (ADP) P2Y12 antagonists, including prasugrel, ticagrelor, cangrelor and elinogrel, are in various phases of clinical development. These ADP P2Y12 antagonists have advantages over clopidogrel ranging from faster onset to greater and less variable inhibition of platelet function. Novel ADP P2Y12 antagonists are under investigation to determine whether their use can result in improved antiplatelet activity, faster onset of action, and/or greater antithrombotic effects than clopidogrel, without an unacceptable increase in hemorrhagic or other side effects. Prasugrel (CS-747; LY-640315), a novel third-generation oral thienopyridine, is a specific, irreversible antagonist of the platelet ADP P2Y12 receptor. Preclinical and early phase clinical studies have shown prasugrel to be characterized by more potent antiplatelet effects, lower interindividual variability in platelet response, and faster onset of activity compared to clopidogrel. Recent findings from large-scale phase III testing showed prasugrel to be more efficacious in preventing ischemic events in patients with acute coronary syndrome (ACS) undergoing percutaneous coronary intervention (PCI); however, this is achieved at the expense of an increased risk of bleeding. Prasugrel provides more rapid and consistent platelet inhibition than clopidogrel.

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