Abstract：
:The anti-peroxidative activity of eugenol on Fe(2+)-ascorbate- and Fe(2+)-H2O2-induced lipid peroxidation was studied using rat liver mitochondria. Eugenol inhibited thiobarbituric acid reactive substance (TBARS) formation induced by both the systems in addition to oxygen uptake and mitochondrial swelling induced by Fe(2+)-ascorbate. Time course studies on TBARS formation indicated the ability of eugenol to inhibit initiation and propagation reactions. There was no measurable chemical modification of eugenol during the course of mitochondrial peroxidation by both the systems. Mitochondrial peroxidation by Fe(2+)-H2O2 was inhibited by hydroxyl radical (OH) scavengers like mannitol, benzoate, formate and dimethyl sulfoxide apart from eugenol. The OH scavenging ability of eugenol was evident from its inhibitory effect on OH-mediated deoxyribose degradation. The second-order rate constant for the reaction of OH with eugenol was about 4.8 x 10(10) M-1 sec-1. Eugenol reduced Fe3+ ions and Fe3+ chelated to citrate or ADP but it did not exhibit pro-oxidant activity in OH-mediated deoxyribose degradation. Incubation of mitochondria with eugenol resulted in the uptake of small but significant quantities of eugenol which inhibited subsequent lipid peroxidation by acting as a chain breaking antioxidant.
journal_name
Biochem Pharmacoljournal_title
Biochemical pharmacologyauthors
Nagababu E,Lakshmaiah Ndoi
10.1016/0006-2952(92)90318-dsubject
Has Abstractpub_date
1992-06-09 00:00:00pages
2393-400issue
11eissn
0006-2952issn
1873-2968pii
0006-2952(92)90318-Djournal_volume
43pub_type
杂志文章abstract：:Although clofibrate has been shown to inhibit platelet aggregation that is caused by thrombin, ADP and epinephrine, by blocking the release of arachidonic acid from platelet phospholipids [8], here we have demonstrated that clofibrate enhanced platelet aggregation by arachidonic acid and PLC and reversed the effects o...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(82)90434-8
更新日期：1982-06-01 00:00:00
abstract：:In contrast to previous studies using chemically-induced diabetic rats, the in vivo acetylation of sulphamethazine is increased in spontaneously diabetic, insulin-dependent BB/Edinburgh (BB/E) Wistar rats compared to non-diabetic control animals from the same colony. In both diabetic and non-diabetic rats, male animal...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(91)90540-l
更新日期：1991-02-01 00:00:00
abstract：:Compounds of the mevalonate pathway containing a terminal di- or triphosphate (mev-PP or mev-PPP) were tested as substrates of several enzyme ligases (T4 RNA ligase, T4 DNA ligase, firefly luciferase and other ligases) for the synthesis of ATP derivatives of the mev-pppA or mev-ppppA type. T4 RNA ligase, in the presen...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2009.04.028
更新日期：2009-08-15 00:00:00
abstract：:Hepcidin peptide is crucial in the regulation of systemic iron availability controlling its uptake from the diet and its release from the body storage tissues. Hepcidin dysregulation causes different human disorders ranging from iron overload (e.g. hemochromatosis) to iron deficiency (e.g. anemia). Hepcidin excess is ...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2020.113867
更新日期：2020-05-01 00:00:00
abstract：:The metabolism of 3-phenoxybenzoic acid (3PBA) in the form of triacylglycerol conjugates was compared with that of non-esterified 3PBA. Three radiolabeled triacylglycerols (rac-1-(3-phenoxy-[ring-14C]-benzoyl)-2,3-dipalmitoylglycerol (1(3PBA)DPG), sn-2-(3-phenoxy-[ring-14C]benzoyl)-1,3-dipalmitoylglycerol (2(3PBA)DPG)...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/s0006-2952(98)00196-8
更新日期：1998-12-15 00:00:00
abstract：:Diethyl maleate (DEM) was given intraperitoneally to rats in a dose (4.3 mmoles/kg) known to markedly decrease glutathione levels in liver. DEM induced a choleresis previously shown to be due to the osmotic activity of DEM conjugates (DEM-glutathione and subsequent metabolic products) excreted into bile. Coincident wi...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(82)90716-x
更新日期：1982-08-15 00:00:00
abstract：:The triazolobenzodiazepine compound alprazolam may have unique clinical effects compared to other benzodiazepines, and both behavioral and neurochemical studies have indicated unusual results after acute doses of alprazolam. To determine the effects of chronic dosage in mice, alprazolam (2 mg/kg/day) was administered ...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(89)90584-4
更新日期：1989-11-01 00:00:00
abstract：:Elongator, a multi-subunit complex assembled by the IkappaB kinase-associated protein (IKAP)/hELP1 scaffold protein is involved in transcriptional elongation in the nucleus as well as in tRNA modifications in the cytoplasm. However, the biological processes regulated by Elongator in human cells only start to be elucid...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2008.03.006
更新日期：2008-06-01 00:00:00
abstract：:Short-term agonist-induced loss of cell surface muscarinic receptors and desensitization of receptor-mediated cyclic GMP (cGMP) formation and phosphoinositide hydrolysis were examined in mouse neuroblastoma cells (clone N1E-115) in suspension. This treatment resulted in a time-dependent reduction of approximately 40% ...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(89)90418-8
更新日期：1989-06-01 00:00:00
abstract：:No doubt can remain that the flavonoids have profound effects on the function of immune and inflammatory cells as determined by a large number and variety of in vitro and some in vivo observations. That these ubiquitous dietary chemicals may have significant in vivo effects on homeostasis within the immune system and ...
journal_title：Biochemical pharmacology
pub_type： 杂志文章,评审
doi：10.1016/0006-2952(92)90489-6
更新日期：1992-03-17 00:00:00
abstract：:Relaxation of precontracted rabbit aortic rings in vitro by cyanamide, a clinically used alcohol deterrent drug, required catalase and H2O2, suggesting that a bioactivation mechanism was involved. Since the oxidation of cyanamide by catalase/H2O2 had been shown previously to lead to nitroxyl (HNO) generation via the i...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(94)90495-2
更新日期：1994-03-02 00:00:00
abstract：:The anti-anginal agent bepridil blocks slow Ca2+ channels in a variety of tissues. Since bepridil accumulates inside cells, the possibility exists that bepridil acts, at least partially, from inside the cell. To test this possibility, we examined the effects of a quaternary ammonium analog of bepridil, methylated bepr...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(86)90460-0
更新日期：1986-07-15 00:00:00
abstract：:The oxidation of 14C-pyruvate by isolated rat pancreatic islets was inhibited competitively and in a concentration-dependent manner by alpha-cyano-4-hydroxycinnamate. A similar, though less marked inhibition was observed of U-14C-glucose oxidation, although oxidation of 1-14C-glucose was slightly enhanced in the prese...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(88)90550-3
更新日期：1988-05-15 00:00:00
abstract：:Reactive oxygen species (ROS) attack guanine bases in DNA and form 8-hydroxydeoxyguanosine (8-OHdG), which has been regarded simply as an oxidative mutagenic by-product. On the other hand, our previous report showed paradoxically ROS attenuating action of generated 8-OHdG. In the current study, both in vitro and in vi...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2010.08.023
更新日期：2011-01-01 00:00:00
abstract：:The turnover rate of vitamin E is slow in nerve tissue. Therefore, we have developed in vitro techniques to study the biochemical reactions of this nutrient in brain. Subcellular fractions were isolated from the cerebral hemispheres of 4-month-old, male, Fisher 344 rats. Aliquots of fractions (500 micrograms protein) ...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(93)90202-8
更新日期：1993-06-09 00:00:00
abstract：:U73122 ((1-[6-(( 17beta-3-methoxyestra-1,3,5(10)-trien-17-yl)amino)exyl]-1H-p yrrole-2,5-dione)) is generally used as a selective inhibitor of phospholipase C (PLC) and the related rise in cytosolic Ca2+. Recently, by using hepatocytes, it was suggested that its action sites are different for PLC activation and increa...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/s0006-2952(98)00146-4
更新日期：1998-12-01 00:00:00
abstract：:Diclofenac is a non-steroidal anti-inflammatory drug that is widely used clinically but side effects associated with the administration of the drug have been reported. The apoptotic effect of the drug has been evaluated in human and rat hepatocytes. Apoptosis was observed after exposure to sub-cytotoxic concentrations...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2003.08.003
更新日期：2003-12-01 00:00:00
abstract：:Targeted drug therapy or "smart" drug delivery, potentially combined with simultaneous imaging modalities to monitor the delivery of drugs to specific tissues, is arguably the "holy grail" of pharmacology. Therapeutic approaches that exploit nanoparticles to deliver drugs selectively to cancer cells are currently cons...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2011.01.023
更新日期：2011-04-15 00:00:00
abstract：:The addition of atrial natriuretic peptide (ANP) to isolated human adipocytes in primary culture from very obese individuals resulted in an inhibition of leptin release after a 24- or 48-hr incubation. There was also an inhibition of leptin release by isoproterenol (ISO) that was partially reversed by insulin, whereas...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/s0006-2952(03)00154-0
更新日期：2003-06-01 00:00:00
abstract：:The antithyroid drug propylthiouracil (PTU) has been shown previously to reduce hepatic oxygen utilization and to protect the liver from ethanol-induced injury. The present study examined the effect of PTU on hepatic microsomal oxygen consumption and on the activities of NADPH-cytochrome P450 reductase (CYP-reductase)...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(95)00007-m
更新日期：1995-03-30 00:00:00
abstract：:Aldehyde oxidase (AOX) is a cytosolic enzyme responsible for the metabolism of some drugs and drug candidates. AOX catalyzes the oxidative hydroxylation of substrates including several aliphatic and aromatic aldehydes, and nitrogen-containing heterocyclic compounds. AOX is also reported to catalyze the reductive metab...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2017.09.002
更新日期：2017-12-01 00:00:00
abstract：:A number of tumour cells, including Ehrlich ascites tumour cells (EATC), possess a polyamine uptake system which selectively accumulates endogenous polyamines and structurally related compounds by an active energy dependent system(s). We suggest that it may be possible to utilize this uptake system to target certain c...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(92)90241-a
更新日期：1992-02-18 00:00:00
abstract：:Catalase, superoxide dismutase, and dimethylsulfoxide were tested for their ability to prevent the cytotoxic effect of 6-hydroxydopamine (6-OHDA) on the human neuroblastoma line SY5Y. Viability was measured at two time points after 6-OHDA treatment: at 3 hr by means of amino acid incorporation and at 24 hr by trypan b...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(82)90208-8
更新日期：1982-01-15 00:00:00
abstract：:The effect of non-insulin-dependent diabetes on the hepatic microsomal cytochrome P450-dependent mixed-function oxidase system and on cytosolic glutathione S-transferase activity was determined using the spontaneously obese-diabetic (ob/ob) mouse model. The activities of the xenobiotic-metabolizing cytochrome P450 pro...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(92)90724-w
更新日期：1992-04-15 00:00:00
abstract：:Psychedelic new psychoactive substances (NPS), compounds exerting their main pharmacological effects through the activation of the serotonin 2A receptor (5-HT2AR), continuously comprise a substantial portion of the reported NPS. However, these substances and their exact mechanism of action, differentiating them from n...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2020.114251
更新日期：2020-12-01 00:00:00
abstract：:The formation of 4-[1,4-13C]hydroxybutyric acid ([13C]gamma-hydroxybutyric acid; [13C]GHB) in rat brain was studied following intracerebroventricular (i.c.v.) administration of either 4-[1,4-13C]aminobutyric acid ([13C]GABA or 1,4-[1,4-13C]butanediol ([13C]1,4-BD) to awake, freely moving animals. GHB and [13C]GHB were...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(89)90645-x
更新日期：1989-12-15 00:00:00
abstract：:Nephrotoxicity due to renal proximal tubule accumulation of aminoglycoside (AG) antibiotics, such as gentamicin, represents a major clinical problem. Receptor-mediated endocytosis via the multi-ligand receptor megalin is thought to be a key mechanism in the cellular uptake of AGs and nephrotoxicity. This process can b...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2009.09.021
更新日期：2010-02-15 00:00:00
abstract：:The stereoselective sulfoxidation of the pharmacologically active metabolite of sulindac, sulindac sulfide, was characterized in human liver, kidney, and cDNA-expressed enzymes. Kinetic parameter estimates (pH = 7.4) for sulindac sulfoxide formation in human liver microsomes (N = 4) for R- and S-sulindac sulfoxide wer...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/s0006-2952(00)00301-4
更新日期：2000-07-01 00:00:00
abstract：:The dimeric forms of metallothionein were isolated from livers of rabbits which accumulated cadmium in large quantities. The dimers were separated into three isoproteins, both on a DEAE Sephadex A-25 column and on a gel permeation column. Reduction of each dimer with mercaptoethanol yielded monomeric metallothionein-I...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(80)90540-7
更新日期：1980-03-01 00:00:00
abstract：:The anticancer drug cis-diamminedichloroplatinum(II) (cisplatin) has been shown previously to form adducts preferentially within internucleosomal or linker DNA rather than to DNA within the nucleosome. To determine whether other "open" regions of chromatin have an increased affinity for cisplatin, adduct formation wit...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/s0006-2952(95)02256-2
更新日期：1996-03-08 00:00:00
