نتایج جستجو برای: beta receptor
تعداد نتایج: 745778 فیلتر نتایج به سال:
introduction: human t cell lymphotropic l.irus type i is responsible for adult t cell leukemia/lymphoma and htlv-i associated myelopathy. the aim of this study was constructing two reporter plasmids to enable us to evaluate the effects of htlv-i tax protein upon intra cellular signalling pathways which recruit creb and nfkb proteins. material and methods: a complete coding region of bacterial b...
Recombinant turkey erythrocyte beta-adrenergic receptors expressed in murine L cells exhibited characteristic avian subtype selectivity for agonists and antagonists. In 10 of the 11 clones studied, no agonist-induced internalization of receptor was observed, although agonist-induced uncoupling of receptor and adenylyl cyclase occurred rapidly. GTP caused little or no decrease in affinity for be...
The in vivo fate of beta-very low density lipoproteins (beta-VLDLs) was investigated after Cu(2+)-mediated oxidative modification (Ox-beta-VLDL). Ox-beta-VLDL may be physiologically relevant under conditions of defective VLDL removal by the liver (type III hyperlipoproteinemia) or overloading of the remnant receptor (high cholesterol feeding). On oxidation of beta-VLDL, the kinetics of its remo...
We have investigated the ability of tamoxifen to regulate members of the transforming growth factor beta (TGF-beta) family in human breast cancers in vivo. Using immunohistochemical techniques, we find that 3 months of tamoxifen treatment causes a consistent induction of extracellular TGF-beta 1 in breast cancer biopsies, compared with matched pretreatment samples from the same patient. The ind...
Catecholamines have been implicated in the regulation of cardiac hypertrophy. The serial injection of a catecholamine (epinephrine, norepinephrine or isoproterenol) will increase cardiac muscle mass. In a canine model of left ventricular hypertrophy secondary to aortic coarctation, the endogenous catecholamine which increased in circula ting blood in parallel with increased myocardial mass was...
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