Abstract:
:A deconvolution method for estimating the first-pass metabolism of orally administered drugs is proposed. This analysis can be carried out without assuming any pharmacokinetic models. The applicability of the deconvolution method was evaluated by application to the plasma concentration-time courses of aspirin and its metabolite, salicylic acid, reconstructed from pharmacokinetic parameters for orally administered drugs. The estimated absorption profiles for aspirin and salicylic acid were in fairly good agreement with the theoretical ones, although a series of numerical calculations is involved in the procedures. The potential of the present method was also confirmed by applying it to pharmacokinetic data with random errors.
journal_name
Biol Pharm Bulljournal_title
Biological & pharmaceutical bulletinauthors
Yamashita F,Bando H,Takakura Y,Hashida Mdoi
10.1248/bpb.18.1787subject
Has Abstractpub_date
1995-12-01 00:00:00pages
1787-9issue
12eissn
0918-6158issn
1347-5215journal_volume
18pub_type
杂志文章abstract::An accumulating body of evidence indicates that inflammation plays a crucial role in the pathophysiology of myocardial infarction (MI). Nucleotide-binding oligomerization domain-like receptor (NLR) family pyrin domain containing 3 (NLRP3) inflammasome is an intracellular multiprotein complex that regulates caspase-1 a...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章,评审
doi:10.1248/bpb.b18-00369
更新日期:2019-01-01 00:00:00
abstract::B-type natriuretic peptide (BNP) is one peptide hormone released in response to myocyte stretch, whose functions play significant roles in health and disease. Its physiologic effects result in improved loading conditions and have led to the development of recombinant BNP as a therapeutic agent for heart failure. Previ...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.32.1545
更新日期:2009-09-01 00:00:00
abstract::Calcium channel blockers have become important tools in the treatment of cardiovascular disorders and other diseases. Hybridization of well established calcium antagonist subclasses was an attempt to optimize their pharmacological profile. The intension of this study was to investigate the electrophysiological propert...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.27.1364
更新日期:2004-09-01 00:00:00
abstract::The gas phase of cigarette smoke is important from the viewpoint of human health, because it can pass through alveolar epithelium and enter the circulation. There is no standard method for the preparation of a gas phase extract of cigarette smoke (CSE), although CSE is widely used for research instead of whole cigaret...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章,评审
doi:10.1248/bpb.b16-00062
更新日期:2016-01-01 00:00:00
abstract::A plasmid-cured strain of the marine Vibrio alginolyticus 138-2 retains a respiration-driven Na+ pump. Examinations of several strains of V. alginolyticus and V. parahaemolyticus revealed that these murine Vibrio always possessed the respiration-driven Na+ pump irrespective of the presence or absence of plasmids. Thes...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.16.751
更新日期:1993-08-01 00:00:00
abstract::Ty2 retrotransposons are the mobile genetic elements of the yeast Saccharomyces cerevisiae. Transcriptional regulation of Ty2-917 requires a complex set of cis acting elements which are located both upstream and downstream of the transcription initiation site. Previously, the glycolysis regulatory protein Gcr1p has be...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.25.1212
更新日期:2002-09-01 00:00:00
abstract::The forced swimming test (FST) is suggested to produce abnormalities in the serotonergic and hypothalamic-pituitary-adrenal (HPA) axis systems. Therefore, compounds that attenuate these neurobiological alterations may have potential as antidepressants. The behavioral and biochemical effects of psoralen, a major furoco...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.31.1109
更新日期:2008-06-01 00:00:00
abstract::The extracellular matrix (ECM), which contributes to structural homeostasis as well as to the regulation of cellular function, is enzymatically cleaved by proteases, such as matrix metalloproteinases and cathepsins, in the normal and diseased heart. During the past two decades, matricryptins have been defined as fragm...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章,评审
doi:10.1248/bpb.b17-00308
更新日期:2017-01-01 00:00:00
abstract::Onset of cancer and neurodegenerative disease occurs by abnormal cell growth and neuronal cell death, respectively, and the number of patients with both diseases has been increasing in parallel with an increase in mean lifetime, especially in developed countries. Although both diseases are sporadic, about 10% of the d...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章,评审
doi:10.1248/bpb.b15-00125
更新日期:2015-01-01 00:00:00
abstract::Hypericum perforatum extract (St. John's wort, SJW), Harpagophytum procumbens extract (HPE) and Grape seed proanthocyanidin extract (GSPE) have a broad spectrum of biological activities including antidepressant, anti-inflammatory or anti-oxidant effects. The aim of this study was to clarify antinociceptive properties ...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.31.240
更新日期:2008-02-01 00:00:00
abstract::Oyaksungisan, the herbal prescription composed of eleven herbs, has been widely used in treatment of cerebral infarct in Oriental Medicine. However, the mechanisms by which the herbal formula affects on the production of pro- and anti-inflammatory cytokines in cerebral infarction patients remain unknown yet. The secre...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.30.1037
更新日期:2007-06-01 00:00:00
abstract::Selective inhibitors of phosphodiesterases (PDEs) have been suggested to have anti-inflammatory effects on bronchial asthma through the inhibition of chemotaxis, adhesion, degranulation, the respiratory burst, and survival prolongation of eosinophils. However, the mechanisms by which these agents inhibit eosinophil su...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.28.515
更新日期:2005-03-01 00:00:00
abstract::Three antiinflammatory saponin components were isolated from the alkaline hydrolysate of a butanol-soluble portion of Kalopanax pictus bark extract through an in vivo activity-guided fractionation procedure. The hydrolysate showed inhibition of adjuvant induced arthritis in rats. After further fractionation, the ethyl...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.26.429
更新日期:2003-04-01 00:00:00
abstract::High-resolution deep tissue imaging is possible with two-photon excitation microscopy. With the combined application of two-photon imaging and perfusion with a polar fluorescent tracer, we have established a method to detect exocytic events inside secretory tissues. This method displays the spatiotemporal distribution...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章,评审
doi:10.1248/bpb.b14-00880
更新日期:2015-01-01 00:00:00
abstract::Despite the relatively high prevalence of migraine or headache, the pathophysiological mechanisms triggering headache-associated peripheral hypersensitivities, are unknown. Since nitric oxide (NO) is well known as a causative factor in the pathogenesis of migraine or migraine-associated hypersensitivities, a mouse mod...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.b17-00589
更新日期:2018-02-01 00:00:00
abstract::Using a surface plasmon resonance (SPR) system, we investigated the lipid membrane-binding properties of four analogues of the 18-residue linear amphipathic beta-sheet cationic antimicrobial peptide (KIGAKI)3-NH2, each of which contains a single isoleucine-to-tryptophan substitution. The results of the SPR study revea...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.28.148
更新日期:2005-01-01 00:00:00
abstract::Recently, a silent polymorphism of C3435T of the MDR1 gene, encoding the multidrug resistant transporter MDR1/P-glycoprotein, has been found to be associated with susceptibility to ulcerative colitis (UC), but this remains controversial. This study was conducted to find a possible reason for the discrepancies, and it ...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.29.324
更新日期:2006-02-01 00:00:00
abstract::Ogi-Keishi-Gomotsu-To-Ka-Kojin (OKGK) is a traditional herbal medicine (Kampo medicine) which has been found to ameliorate hypercholesterolemia and hypertriglyceridemia in rats and rabbits. In the present study, the effect of OKGK on acyl-CoA:cholesterol acyltransferase (ACAT) was studied in order to elucidate the mec...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.22.994
更新日期:1999-09-01 00:00:00
abstract::The present study was conducted to evaluate the effects of Paeoniae Radix (PR), one of the most famous tonic traditional Chinese medicines, on the pharmacokinetics of carbamazepine (CBZ) in rats and to determine the possible interactions between PR and CBZ. The significant decrease in Tmax indicated that simultaneous ...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.25.532
更新日期:2002-04-01 00:00:00
abstract::Carvedilol, an alpha- and beta-adrenergic blocking drug, is mainly metabolized by CYP2D6, UGT1A1, UGT2B4 and UGT2B7. This drug is administered orally as a racemic mixture of R(+)- and S(-)-enantiomers. It has been reported that CYP2D6 prefers metabolizing S-carvedilol to R-carvedilol stereoselectively. On the other ha...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.30.2146
更新日期:2007-11-01 00:00:00
abstract::The tissue distribution and disposition of carnitine, which plays an important role in the transport of long-chain fatty acids across the mitochondrial inner membrane for beta-oxidation, are well controlled by carnitine transporter organic cation/carnitine transporter 2 (OCTN2). Since little information is available o...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.31.1230
更新日期:2008-06-01 00:00:00
abstract::We determined the binding affinity of tamsulosin, a selective α(1)-adrenoceptor antagonist, for human α(1)-adrenoceptor subtypes in comparison with those of other α(1)-adrenoceptor antagonists including silodosin, prazosin, 5-methylurapidil, terazosin, alfuzosin, nafopidil, urapidil and BMY7378. The association and di...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.35.72
更新日期:2012-01-01 00:00:00
abstract::A plasmid, pEP2104 (23.9 kilobase pairs), from Staphylococcus aureus carries a gene that specifies inducible resistance to 14-membered (erythromycin, EM, and oleandomycin, OL) and 16-membered macrolide (mycinamicin I and II), but not to all of the latter, and to streptogramin type B antibiotics (partial macrolide- and...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.16.1288
更新日期:1993-12-01 00:00:00
abstract::Hypertension is one of the most prevalent diseases worldwide and can cause harmful complications within the vascular system. Further research on vascular responsiveness to different ligands and diverse receptors in various arteries is required to understand the mechanisms underlying the development of these vascular c...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.b17-00987
更新日期:2018-01-01 00:00:00
abstract::Two fractions of neutral alpha-glucosidase were partially purified from the insoluble fraction of bovine lens. This is the first report of such an event to the best of our knowledge. The apparent native molecular weights of these fractions were 121 kDa (fraction-I) and 254 kDa (fraction-II). Both fractions contained t...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.18.1133
更新日期:1995-08-01 00:00:00
abstract::We investigated the genotypic status of thiopurine methyltransferase (TPMT) polymorphism to evaluate the possible risk of the toxicity of azathioprine (AZA) in 68 patients with systemic lupus erythematosus (SLE). The allele frequency of TPMT mutation in the SLE group (2.9%) was higher than that in 174 Japanese healthy...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.28.2117
更新日期:2005-11-01 00:00:00
abstract::Hyphal growth of Candida albicans was observed at neutral condition, whereas the yeast growth was increased below pH 5. Eight out of 12 strains of C. albicans grow in hyphal form at pH 7, and hyphal formation was inhibited in all strains at pH 4. The addition of GMP, an alternative oxidase (AOX) activator, induced the...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.29.923
更新日期:2006-05-01 00:00:00
abstract::Sixteen cardenolides, two hemiterpenoids, two phenylpropanoids and a phenylethanoid isolated from the roots of Streptocaulon juventas (LOUR.) MERR. were examined for their antiproliferative activity toward three human-derived (HT-1080 fibrosarcoma, lung A549 adenocarcinoma, cervix HeLa adenocarcinoma) and three murine...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.26.1431
更新日期:2003-10-01 00:00:00
abstract::Numerous people die of paraquat (PQ) poisoning every year in the world. Although several studies regarding paraquat (PQ) poisoning have been conducted, the metabolic changes in plasma remain unknown. In this study, the metabolomics of 15 PQ poisoned patients with plasma PQ concentrations in excess of 0.1 µg/mL and 16 ...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.b14-00781
更新日期:2015-01-01 00:00:00
abstract::The interaction of the alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) antagonist YM90K with the competitive N-methyl-D-aspartate (NMDA) antagonist CGS19755 or with the NMDA channel blocker MK801 on the spatial memory of rats was examined by the 4-arm-baited radial maze task. When administered alone, t...
journal_title:Biological & pharmaceutical bulletin
pub_type: 杂志文章
doi:10.1248/bpb.21.1228
更新日期:1998-11-01 00:00:00