Receptor Mechanisms and Signaling

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GPCRs modulate a plethora of physiological processes and mediate the effects of one-third of FDA-approved drugs. Depending on which ligand activates a receptor, it can engage different intracellular transducers. This 'biased signalling' paradigm requires that we now characterize physiological signalling not just by re…

• HASAN ONGUN ONARAN

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• NECLA BİRGÜL

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• ZEHRA ÖZLEM KESKİN ÖZKAYA

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• ATTİLA GÜRSOY

Diabetic hearts exhibit decreased responsiveness to stimulation by beta-adrenoreceptor (beta-AR) agonists. This decrease in activity may be due to changes in expression and/or signaling of beta-AR. Recently we showed that right atrial strips from 14-week streptozotocin (STZ)-induced diabetic rat hearts exhibit decreas…

• ARİF TANJU ÖZÇELİKAY
• ŞAHİKA GÜNER

The up-regulation of α4β2* nicotinic acetylcholine receptors (nAChRs) by chronic nicotine is a cell-delimited process and may be necessary and sufficient for the initial events of nicotine dependence. Clinical literature documents an inverse relationship between a person's history of tobacco use and his or her suscept…

• ÇAĞDAŞ DEVRİM SON

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• ÇAĞDAŞ DEVRİM SON

MOTIVATION: G protein-coupled receptors (GPCRs) are probably the most attractive drug target membrane proteins, which constitute nearly half of drug targets in the contemporary drug discovery industry. While the majority of drug discovery studies employ existing GPCR and ligand interactions to identify new compounds,…

• ARZUCAN ÖZGÜR TÜRKMEN

By combining a Drosophila genome data base search and reverse transcriptase-PCR-based cDNA isolation, two G-protein-coupled receptors were cloned, which are the closest known invertebrate homologs of the mammalian opioid/somatostatin receptors. However, when functionally expressed in Xenopus oocytes by injection of Dr…

• NECLA BİRGÜL

We previously demonstrated that C75, a specific and potent inhibitor of fatty acid synthase (FAS), reduced food intake and decreased body weight in mice. In the present study, we determined that these effects were not due to conditioned taste aversion. To investigate the mechanism of C75 action, we examined FAS brain…