نتایج جستجو برای: unbound aggregate

تعداد نتایج: 49655  

Journal: :Developmental Cell 2019

Journal: :Drug metabolism and disposition: the biological fate of chemicals 2009
Xingrong Liu Olga Vilenski Joyce Kwan Subbu Apparsundaram Robert Weikert

It is a commonly accepted hypothesis that central nervous system (CNS) activity is determined by the unbound brain drug concentration. However, limited experimental data are available in the literature to support this hypothesis. The objective of this study was to test this hypothesis by examining the relationship between in vitro binding affinity (K(I)) and in vivo activity quantified as the d...

2013

To date, the in vitro–in vivo correlation (IVIVC) of P-glycoprotein (P-gp)–mediated drug-drug interaction (DDI) at the blood-brain barrier (BBB) in rats indicated that the cutoff value to significantly affect the brain penetration of digoxin was [I,unbound/Ki] of 1, where I,unbound is the unbound plasma concentration of P-gp inhibitors. On the basis of the IVIVC in rats, we speculated that clin...

Journal: :Journal of cell science 1979
D K Bhalla C V Hunt S P Kapur W A Anderson

The capping of Concanavalin A (Con A) receptors induced by Con A was studied using human peripheral blood lymphocytes. The effects of Con A dose (5--100 micrograms/ml), pretreatment at 4 degrees C, unbound Con A, extracellular Ca2+ and Mg2+ and vinblastine were evaluated using Con A-horseradish peroxidase and electron microscopy. Lymphocytes incubated with Con A at 4 degrees C and fixed with gl...

2013

To date, the in vitro–in vivo correlation (IVIVC) of P-glycoprotein (P-gp)–mediated drug-drug interaction (DDI) at the blood-brain barrier (BBB) in rats indicated that the cutoff value to significantly affect the brain penetration of digoxin was [I,unbound/Ki] of 1, where I,unbound is the unbound plasma concentration of P-gp inhibitors. On the basis of the IVIVC in rats, we speculated that clin...

Journal: :British journal of anaesthesia 2005
D Takizawa E Sato N Ito Y Ogino H Hiraoka F Goto F Cavaliere G Conti U Moscato F Meo M A Pennisi R Costa R Proietti

Editor—Cavaliere and colleagues report that hypoalbuminaemia does not affect the accuracy of Diprifusor during sedation with propofol. They hypothesized that hypoalbuminaemia may affect the accuracy of target-controlled infusion (TCI) by introducing major deviations in propofol pharmacokinetics. Their results, however, failed to show significant differences in the accuracy of the Diprifusor bet...

Journal: :Chemical & pharmaceutical bulletin 1987
E Nakashima K Yokogawa F Ichimura K Kurata H Kido N Yamaguchi T Yamana

The disposition characteristics of biperiden were investigated in rats, rabbits, beagles, and humans, and a physiologically based pharmacokinetic model was established by using the hepatic intrinsic clearance of unbound drug concentration and the tissue-to-plasma unbound concentration ratios. Protein-binding parameters and blood-to-plasma concentration ratios were determined, and linear paramet...

Journal: :The Journal of pharmacology and experimental therapeutics 1985
J H Lin K F Hooke K C Yeh D E Duggan

The purpose of this study was to define the dual effects of saturable metabolism and saturable protein binding on the pharmacokinetics of diflunisal. Steady-state diflunisal concentration and its unbound fraction were examined in seven groups of rats to determine the relationships of infusion rate, concentration and total and unbound clearances. The total body plasma clearance decreased initial...

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