Abstract:
:The inhibition of rat hepatic mitochondrial aldehyde dehydrogenase (ALDH) isozymes was studied in apparent steady-state conditions after repeated intra-peritoneal cyanamide administration. The low-Km mitochondrial ALDH isozyme was more susceptible to cyanamide-induced inhibition (DI50 = 0.104 mg kg-1) than the high-Km isozyme (DI50 = 8.52 mg kg-1), with almost complete inhibition occurring at 0.35 mg kg-1 total cyanamide administered for the low-Km isozyme. The relationships between plasma and liver cyanamide concentrations and the inhibition of high-Km ALDH were established by means of the sigmoid Imax model. The effect of dosing rate on the plasma concentration of cyanamide at apparent steady-state showed non-linearity, indicating that clearance or first-pass metabolism of cyanamide during its absorption after intraperitoneal administration did not remain constant throughout the range of doses studied.
journal_name
Biopharm Drug Disposjournal_title
Biopharmaceutics & drug dispositionauthors
Pruñonosa Piera J,Obach R,Sagristá ML,Bozal Jdoi
10.1002/bdd.2510140508subject
Has Abstractpub_date
1993-07-01 00:00:00pages
419-28issue
5eissn
0142-2782issn
1099-081Xjournal_volume
14pub_type
杂志文章abstract::Aim. To study the pharmacokinetics of dihydroartemisinin (DHA) in Artekin (compound dihydroartemisinin) tablets in Chinese healthy volunteers. Methods. Eighteen healthy volunteers (9 males, 9 females) received Artekin tablets for oral administration. The plasma samples of DHA were analysed by liquid-liquid extraction ...
journal_title:Biopharmaceutics & drug disposition
pub_type: 临床试验,杂志文章
doi:10.1002/bdd.607
更新日期:2008-05-01 00:00:00
abstract::The pharmacokinetics of verapamil, a calcium channel blocker, were studied in male Sprague-Dawley rats following i.v. administration at a dose of 1 mg kg-1. Both arterial and venous blood were collected and the plasma drug concentrations were determined by reversed-phase high-performance liquid chromatography. Verapam...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/bdd.2510140702
更新日期:1993-10-01 00:00:00
abstract::Remogliflozin etabonate (RE) is the prodrug of remogliflozin (R), an inhibitor of renal glucose transport designed to reduce blood glucose concentrations for the treatment of type 2 diabetes. This open-label, randomized, single-dose, four-way crossover study, (with one add-on arm) in eight healthy men evaluated the re...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章,随机对照试验
doi:10.1002/bdd.1824
更新日期:2013-03-01 00:00:00
abstract::The pharmacokinetics of 3-(decyldimethylsilyl)-N-[2-(4-methylphenyl)-1-phenylethyl]propanamide (DMPP), an inhibitor of acyl-CoA:cholesterol acyltransferase, have been studied in the dog and the rat using 14C and 3H dual-labelled drug. In both species, gastrointestinal absorption of DMPP was slow and incomplete, amount...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/bdd.2510080504
更新日期:1987-09-01 00:00:00
abstract:OBJECTIVE:To investigate the pharmacokinetics of budesonide and formoterol administered concomitantly in healthy adults. METHODS:Three single-dose, open-label crossover studies (n=28 each) were conducted (Study I: budesonide pMDI, formoterol DPI, budesonide pMDI+formoterol DPI; Study II: budesonide/formoterol pMDI, bu...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章,随机对照试验
doi:10.1002/bdd.622
更新日期:2008-10-01 00:00:00
abstract:PURPOSE:The sonodynamically induced anti-tumor effect of chlorin-e6 (Ce6) was studied in mice bearing hepatoma-22 solid tumors. METHODS:In order to determine the optimum timing of ultrasound exposure after administration of Ce6, the Ce6 concentrations in plasma, skin, muscle and tumor were estimated by measuring the f...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/bdd.761
更新日期:2011-09-01 00:00:00
abstract::The first day test dose versus steady-state relationship for predicting drug doses was evaluated for the situation where metabolites are produced. An organ clearance model incorporated into a digital computer program simulated drug and metabolite disposition. When the terminal elimination rate for metabolite was simil...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/bdd.2510040105
更新日期:1983-01-01 00:00:00
abstract::Data from sustained-release and enteric-coated oral formulations, and the suppository formulation of diclofenac sodium are fitted simultaneously using NONMEM and the general linear model, ADVAN 5. Absorption and disposition parameters, serum levels, and absorption profiles were determined. The in vivo absorption profi...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/(sici)1099-081x(199804)19:3<169::aid-bdd83
更新日期:1998-04-01 00:00:00
abstract::The pharmacokinetics of an intravenous injection of disopyramide was studied in five normal subjects and six patients with varying degrees of renal impairment. The elimination rate constant (beta) was related to the endogenous creatinine clearance (Clcr). However, a decrease in beta was not observed until the Clcr was...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/bdd.2510010308
更新日期:1980-01-01 00:00:00
abstract::SYL-927, a novel and selective S1P1 agonist, is transferred to its active phosphate for the regulation of lymphocyte recirculation. This in vitro metabolism study is to elucidate the P450-mediated oxidation pathway of SYL-927 in human liver microsomes (HLMs). The results demonstrated that the ω-1 hydroxylated metaboli...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/bdd.2161
更新日期:2018-11-01 00:00:00
abstract::Biliary clearance (Clb) of sotalol (STL) enantiomers was assessed in anaesthetized Sprague-Dawley rats (419 +/- 9 g, mean +/- SEM, n = 4) following administration of a 10 mg kg-1 i.v. dose of the racemate. Clb for S- and R-STL (0.0675 +/- 0.0090 and 0.0662 +/- 0.0089 mL min-1 kg-1, respectively) represented approximat...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/(SICI)1099-081X(199611)17:8<725::AID-BDD99
更新日期:1996-11-01 00:00:00
abstract::Macelignan is a natural phenolic compound that possesses many types of health benefits such as antiinflammation. This study aimed to characterize the metabolism of macelignan via the glucuronidation pathway and to identify the main UGT enzymes involved in macelignan glucuronidation. The rates of glucuronidation were d...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/bdd.1914
更新日期:2014-12-01 00:00:00
abstract::The total body clearance (CL), renal clearance (CLR), and nonrenal clearance (CLNR) of caffeine from plasma were determined following the intravenous administration of caffeine (4 mg kg-1) to ten healthy men (aged 66-86 years) on three separate occasions. Positive correlations were observed between CL and urine flow r...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/bdd.2510060107
更新日期:1985-01-01 00:00:00
abstract::The objective of this study was to assess the effect of dietary fibers on the transport of losartan, an angiotensin II type 1 receptor blocker, in small intestinal cells. Using Caco-2 cells in vitro, losartan uptake and transport were evaluated in the presence of various fibers (cellulose, chitosan, sodium alginate an...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/bdd.2004
更新日期:2016-05-01 00:00:00
abstract::In the search for orally available drugs, the prediction of human pharmacokinetics (PK) is essential for successfully selecting compounds that will be clinically useful. This report describes the selection of TAK-272 (SCO-272), a novel orally active renin inhibitor, as a clinical candidate via the detailed investigati...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/bdd.2124
更新日期:2018-03-01 00:00:00
abstract::In a multiple dose cross-over experiment in 12 healthy male adults the bioavailability and sustained release characteristics of new once daily BY912 400 mg theophylline capsules (= B, Byk Gulden Research Laboratories, FRG) were studied using Theo-24 capsules (= T, Searle & Co., USA) as reference. Both products were gi...
journal_title:Biopharmaceutics & drug disposition
pub_type: 临床试验,杂志文章
doi:10.1002/bdd.2510100210
更新日期:1989-03-01 00:00:00
abstract::The pharmacokinetics and pharmacodynamics of furosemide were compared after an oral administration or a direct administration of Lasix into the duodenum in humans (40 mg). Furosemide was absorbed quickly after a direct administration of Lasix into the duodenum; the peak plasma concentration of furosemide was reached w...
journal_title:Biopharmaceutics & drug disposition
pub_type: 临床试验,杂志文章
doi:10.1002/(sici)1099-081x(199712)18:9<753::aid-bdd63
更新日期:1997-12-01 00:00:00
abstract::The present study aimed to examine the potential pharmacokinetic drug interaction between valsartan and gemfibrozil. Compared with the control given valsartan (10 mg/kg) alone, the concurrent use of gemfibrozil (10 mg/kg) significantly (p < 0.05) increased the oral exposure of valsartan in rats. In the presence of gem...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/bdd.2001
更新日期:2016-07-01 00:00:00
abstract::The effect of the combination of a new anticonvulsant drug HEPP and carbamazepine (CBZ) on the pharmacokinetics of HEPP and CBZ was investigated using rabbits as an animal model. The study was performed in 18 male New Zealand white rabbits which were randomly divided into three groups, according to a balanced incomple...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/bdd.356
更新日期:2003-07-01 00:00:00
abstract::Studies were designed to allow an in vivo estimation of the hepatic extraction ratio and to test the hypothesis that the pharmacokinetic parameters of (-)-CBV are significantly different during anesthesia. (-)-CBV was administered as an i.v. bolus followed by i.v. infusion into either the portal (n = 3) or the jugular...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/bdd.2510160407
更新日期:1995-05-01 00:00:00
abstract::The plasma protein binding of celecoxib was determined for animals and humans using in vitro and ex vivo methods. Eight, healthy, human volunteers (three male, five female, 20-39 years) received celecoxib (600 mg) BID for 7 days, blood samples were collected and concentrations of bound and unbound celecoxib determined...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/(sici)1099-081x(199909)20:6<293::aid-bdd18
更新日期:1999-09-01 00:00:00
abstract::p-hydroxymethamphetamine (OHMAP) is one of the major metabolites of the widely abused drug methamphetamine (MAP). The demethylation of OHMAP to p-hydroxyamphetamine (OHAP) has been shown in vitro but has never been reported in vivo. The disposition kinetics as well as the metabolism of OHMAP was investigated employing...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/(sici)1099-081x(199707)18:5<423::aid-bdd30
更新日期:1997-07-01 00:00:00
abstract::The objective of this study was to investigate the absorption behavior of chikusetsusaponin IVa (CHS-IVa) in the rat intestine using single-pass intestinal perfusion (SPIP) and to classify CHS-IVa into the biopharmaceutics classification system (BCS). The equilibrium solubility of CHS-IVa was determined by the shaker ...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/bdd.2200
更新日期:2019-09-01 00:00:00
abstract::The following results were obtained recently from our laboratories; in rats with 72-h water deprivation (rats with dehydration), the hepatic cytochrome P450 2E1 (CYP2E1) was three-fold induced with an increase in the mRNA. Rehydration of 48-h water-deprived rats for the next 24 h with free access of food (rats with re...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/bdd.335
更新日期:2003-03-01 00:00:00
abstract::Mivacurium, a non-depolarizing neuromuscular blocking agent, consists of three isomers; trans-trans (57%), cis-trans (36%) and cis-cis (7%). The purpose of this study was to characterize the pharmacokinetics and pharmacodynamics of mivacurium after various inputs. Four beagle dogs weighing between 7.95 and 9.89 kg wer...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/(sici)1099-081x(1998110)19:8<485::aid-bdd1
更新日期:1998-11-01 00:00:00
abstract::Although nifedipine has been characterized in terms of its general vasodilatory effects, this dihydropyridine must still be regarded as investigational with regard to available pharmacokinetic and pharmacodynamic data. Although limited studies are available, it is clear that the pharmacokinetic and pharmacodynamic dat...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章,评审
doi:10.1002/bdd.2510070102
更新日期:1986-01-01 00:00:00
abstract::The pharmacokinetic behavior of glycyrrhizin in four patients with acute hepatitis (hepatitis group) and six patients with liver cirrhosis (cirrhosis group) receiving chronically an IV administration of a 120 mg dose once a day or once every other day of glycyrrhizin was investigated. The plasma concentration of glycy...
journal_title:Biopharmaceutics & drug disposition
pub_type: 临床试验,杂志文章
doi:10.1002/bdd.2510160103
更新日期:1995-01-01 00:00:00
abstract::Gastrointestinal distress resulting from drug intake is often remedied by administering the drug with antacids. However, antacids have been shown to modify the absorption and excretion of many drugs. This study was designed to delineate the effects of aluminium and magnesium hydroxide antacid suspension (Maalox) on th...
journal_title:Biopharmaceutics & drug disposition
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1002/bdd.2510100610
更新日期:1989-11-01 00:00:00
abstract::We synthesized 14C-warfarin hexadecyl ether (14C-WHE) by addition of a palmityl moiety to the hydroxyl group at the 4-position of 14C-warfarin, a compound known to bind to serum albumin. 14C-WHE preferentially bound to the lipoproteins, low-density lipoprotein (LDL) and high-density lipoprotein (HDL), in mouse plasma ...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/bdd.2510160204
更新日期:1995-03-01 00:00:00
abstract::Flow microcalorimetry was used to estimate primary binding constants for drug-albumin interactions. Measurements of heat of reaction at two temperatures illustrated the danger of extrapolation for pharmacokinetic purposes of measurements made at temperatures other than 37 degrees. The method could be used to predict c...
journal_title:Biopharmaceutics & drug disposition
pub_type: 杂志文章
doi:10.1002/bdd.2510050403
更新日期:1984-10-01 00:00:00