Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Comparative Biophysical Studies of Sartan Class Drug Molecules Losartan and Candesartan (CV-11974) with Membrane Bilayers
Δημιουργός/Συγγραφέας:	Fotakis, Charalambos Christodouleas, Dionysios [EL] Ζουμπουλάκης, Παναγιώτης[EN] Zoumpoulakis, Panagiotis Kritsi, Effichia Benetis, Nikolas-Ploutarch [EL] Μαυρομούστακος, Θωμάς[EN] Mavromoustakos, Thomas [EL] Ραϊς, Χεριμπέρτ[EN] Reis, Heribert Gili, Argiro [EL] Παπαδόπουλος, Μάνθος Γ.[EN] Papadopoulos, Manthos G. [EL] Ζερβού, Μαρία[EN] Zervou, Maria
Εκδότης:	American Chemical Society
Τόπος έκδοσης:	WASHINGTON
Ημερομηνία:	2011-05-19
Γλώσσα:	Αγγλικά
ISSN:	1520-6106
DOI:	10.1021/jp110371k
Περίληψη:	The interactions of the antihypertensive AT(1) antagonists candesartan and losartan with membrane bilayers were studied through the application of DSC, Raman, and solid. state (31)P NMR spectroscopes. (1)H and (13)C NMR resonances of candesartan were assigned on the basis of 1D and 2D NMR spectroscopy. A (31)P CP NMR broadline fitting methodology in combination with ab initio computations was implemented and, in conjunction with DSC and Raman results, provided valuable information regarding the perturbation, localization, orientation, and dynamic properties of the drugs in membrane models. in particular, results indicate that losartan anchors in the mesophase region of the lipid bilayers with the tetrazole group oriented toward the polar headgroup, whereas candesartan has less definite localization spanning from water interface toward the mesophase and upper segment of the hydrophobic region. Both sartan molecules decrease the mobilization of the phospholipids alkyl chains. Losartan exerts stronger interactions compared with candesartan, as depicted by the more prominent thermal, structural, and dipolar (1)H-(31)P changes that are caused in the lipid bilayers. At higher concentrations, candesartan strengthens the polar interactions and induces increased order at the bilayer surface. At the highest concentration used (20 mol %), only losartan induces formation of microdomains attributed to the flexibility of its alkyl chain. These results in correlation to reported data with other AT(1) antagonists strengthen the hypothesis that this class of molecules may approach the active site of the receptor by insertion in the lipid core, followed by lateral diffusion toward the binding site. Further, the similarities and differences of these drugs in their interactions with lipid bilayers establish, at least in part, their pharmacological properties.
Τίτλος πηγής δημοσίευσης:	Journal of Physical Chemistry B
Τόμος/Κεφάλαιο:	115
Τεύχος:	19
Σελίδες:	6180-6192
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© AMER CHEMICAL SOC
Ηλεκτρονική διεύθυνση περιοδικού (link) :	http://www.pubs.acs.org/jpcb
ΙΒΦΧΒ: αρχειακή συλλογή:	Ινστιτούτο Οργανικής και Φαρμακευτικής Χημείας (ΙΟΦΧ) (έως 2012)
Εμφανίζεται στις συλλογές:	Ινστιτούτο Χημικής Βιολογίας - Επιστημονικό έργο