Abstract:
:Administration of pentylenetetrazol (PTZ) (60 mg/kg, s.c.) to normal or carbaryl (200 mg/kg, p.o.) treated adult male albino rats produced characteristic changes in the steady-state levels of striatal dopamine (DA), noradrenaline (NA) and homovanillic acid (HVA) at different time intervals (0.5, 1.0 and 2.0 hr). The elevation of striatal NA level was found to be more pronounced with PTZ than that produced by carbaryl. Treatment of rats with PTZ alone caused a significant elevation of DA levels only at 2.0 hr without any significant change in the level of HVA at any time interval. Carbaryl which did not have any significant effect on striatal DA level produced an elevation of HVA at 0.5 hr and 1.0 hr in striatum. The simultaneous administration of PTZ and carbaryl, under similar conditions, caused a marked reduction in the level of NA at 0.5 hr and DA at 1.0 hr without any significant effect on (i) both the amine levels at 2.0 hr and (ii) HVA level at any of the time intervals. Measurement of (a) alpha-methyl-p-tyrosine (alpha-MpT) (250 mg/kg, i.p.) induced depletion of striatal DA and NA, (b) FLA-63 (25 mg/kg, i.p.) induced disappearance of NA, (c) pargyline (75 mg/kg, i.p.) induced reduction and probenecid (200 mg/kg, i.p.) induced accumulation of striatal HVA in the presence or absence of PTZ and/or carbaryl revealed that: (1) PTZ or carbaryl alone caused a significant increase in the turnover of striatal DA; (2) the turnover of striatal NA was significantly increased after PTZ treatment but not after carbaryl administration; (3) the simultaneous administration of carbaryl and PTZ, on the other hand, attenuated (a) PTZ- or carbaryl-induced increase in metabolic activity of the striatal dopaminergic system, and (b) the enhanced anabolic activity of striatal noradrenergic system caused by PTZ, but failed to affect the enhanced utilization of striatal NA induced by PTZ alone.
journal_name
Biochem Pharmacoljournal_title
Biochemical pharmacologyauthors
Ray SK,Poddar MKdoi
10.1016/0006-2952(85)90189-3subject
Has Abstractpub_date
1985-02-15 00:00:00pages
553-7issue
4eissn
0006-2952issn
1873-2968pii
0006-2952(85)90189-3journal_volume
34pub_type
杂志文章abstract::Most anti-inflammatory agents used in the treatment of joint diseases exert inhibitory effects on leukocyte infiltration. Methotrexate, a disease-modifying drug, and corticosteroids also inhibit leukocyte accumulation during inflammation. However, the mechanisms of action of these different compounds on leukocytes var...
journal_title:Biochemical pharmacology
pub_type: 杂志文章,评审
doi:10.1016/s0006-2952(99)00056-8
更新日期:1999-07-15 00:00:00
abstract::Breast cancer is the leading cause of cancer death among females, and novel chemotherapeutic drugs for treating breast cancer are needed urgently. Saxifragifolin D (SD) was isolated by our group from Androsace umbellata which is commonly used to treat solid tumor. In this study, we evaluated its growth inhibitory effe...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/j.bcp.2013.01.009
更新日期:2013-04-01 00:00:00
abstract::20-Hydroxyvitamin D(3) (20(OH)D(3)), the major product of CYP11A1 action on vitamin D(3), is biologically active and is produced in vivo. As well as potentially having important physiological actions, it is of interest as a therapeutic agent due to its lack of calcemic activity. In the current study we have examined t...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/j.bcp.2012.09.032
更新日期:2012-12-15 00:00:00
abstract::To determine if both the Ca2+-calmodulin system and the cyclic AMP system may regulate tyrosine hydroxylase (TH) activity in situ, rat striatal tissue slices that contain all of the components of the TH, cyclic AMP and Ca2+-calmodulin systems were subjected to experimental manipulations. Incubation of striatal tissue ...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/0006-2952(85)90560-x
更新日期:1985-08-01 00:00:00
abstract::Interleukin-6 (IL-6) is known to differentiate the rat pheochromocytoma cell line PC12 to neuron-like cells. We examined the effect of IL-6 on the death of PC12 cells. IL-6 significantly blocked the death of PC12 cells by serum deprivation. The protective effect of IL-6 was increased by preincubation of PC12 with IL-6...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/0006-2952(96)00422-4
更新日期:1996-09-27 00:00:00
abstract::Chronic inflammation has been implicated as the underlying factor in the pathogenesis of many disorders. In the past decade, inflammation-related endogenous production of reactive nitrogen species, similar to oxygen free radicals, has also been suggested as a risk factor for cancer, in addition to the well-studied exo...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/s0006-2952(97)00504-2
更新日期:1997-12-15 00:00:00
abstract::Structurally diverse chemotherapeutic and chemopreventive drugs, including camptothecin, doxorubicin, sanguinarine, and others, were found to cause covalent crosslinking of proliferating cell nuclear antigen (PCNA) trimers in mammalian cells exposed to fluorescent light. This PCNA damage was caused by both nuclear and...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/j.bcp.2008.09.003
更新日期:2008-12-15 00:00:00
abstract::The nuclear retinoid X receptor-α (RXRα) plays critical roles in cell homeostasis and in many physiological processes mainly through its transcriptional function. However, an N-terminal truncated form of RXRα, tRXRα, was frequently described in various cancer cells and tumor tissues, thus representing a new promising ...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/j.bcp.2016.10.014
更新日期:2017-01-15 00:00:00
abstract::Innovative crystallographic techniques have resulted in an exponential growth in the number of solved G-protein coupled receptor (GPCR) structures and a better understanding of the mechanisms of class A receptor activation and G protein binding. The recent release of the type 1 receptor for the corticotropin-releasing...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/j.bcp.2015.05.015
更新日期:2015-08-01 00:00:00
abstract::During a cellular screening of thiocolchicine analogs, thiocolchicine dimers resulted particularly active in cisplatin-resistant A2780-CIS cells. In order to discover by which mechanism(s) thiocolchicine dimers overcame cisplatin resistance, p53, p21waf1 and MLH1 were assessed by Western blot. Results pointed out that...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/j.bcp.2004.09.004
更新日期:2005-01-01 00:00:00
abstract::Adenosine potentiates mouse bone marrow-derived mast cell mediator release by a mechanism that appears to involve cell surface adenosine receptors. In an attempt to explore possible interactions between G proteins and adenosine receptors, mast cells were incubated with activated pertussis toxin, an agent that ADP-ribo...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/0006-2952(88)90088-3
更新日期:1988-10-15 00:00:00
abstract::The present study focused on the desensitization process of the H(2) receptor in U937 cells and the recovery of the cyclic AMP (cAMP) response. Treatment of U937 leukemic cells with the H(2) histamine receptor agonists (+/-)-N(1)-[3-(3, 4-difluorophenyl)-3-(pyridin-2-yl)propyl]-N(2)-[3-(1H-imidazol-4-yl)p ropyl]guanid...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/s0006-2952(00)00295-1
更新日期:2000-07-15 00:00:00
abstract::The effects of staurosporine, a protein kinase inhibitor, on the signal transduction and proliferation of thymocytes were studied. Signal transduction in response to Concanavalin A (Con A) as well as Concanavalin A (Con A)-induced augmentation of [3H]inositol incorporation into phospholipids were inhibited by staurosp...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/0006-2952(92)90473-v
更新日期:1992-10-20 00:00:00
abstract::The advent of drugs targeting tumor-associated prosurvival alterations of cancer cells has changed the interest of antitumor drug development from cytotoxic drugs to target-specific agents. Although single-agent therapy with molecularly targeted agents has shown limited success in tumor growth control, a promising str...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/j.bcp.2010.07.030
更新日期:2010-11-15 00:00:00
abstract::Vascular disrupting agents show selective effects on tumor established vasculature, and achieve encouraging results in both pre-clinical and clinical experiments. In the present study, we investigated the effects of a new CA4 derivative MDS-11 and its prodrug MDS-11P on vascular disrupting activity in vitro and in viv...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/j.bcp.2011.08.024
更新日期:2011-12-15 00:00:00
abstract::Glyburide is a second-generation sulfonylurea hypoglycemic drug used for the treatment of select women with pregestational and gestational diabetes mellitus (GDM). In vitro and in vivo investigations demonstrated its very low transplacental transfer to the fetal circulation. However, the factors influencing its low tr...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/j.bcp.2006.05.019
更新日期:2006-08-28 00:00:00
abstract::Sustained activation of AMP-activated protein kinase (AMPK) induces apoptosis in several cell types. In pancreatic beta cells this occurs under glucose limitation, or in the presence of the pharmacological AMPK activator 5-aminoimidazole-4-carboxamide-riboside (AICAR). It is unknown whether Akt activation can countera...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/j.bcp.2008.02.019
更新日期:2008-05-15 00:00:00
abstract::This study aimed to clarify whether glutathione (GSH) plays a role in the hepatobiliary transport of arsenic. For this purpose, the biliary excretion of 74As was measured in urethane-anaesthetized rats for 2 hr after the administration of labelled sodium arsenite (50 mumol/kg, i.v.) or arsenate (150 mumol/kg, i.v.) an...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/0006-2952(91)90306-p
更新日期:1991-07-15 00:00:00
abstract::Incubation of cultured embryonic chicken heart cells with transforming growth factor beta 1 (TGF-beta 1) resulted in a concentration- and time-dependent decrease in the number of muscarinic acetylcholine receptors (mAChR), which reached a maximum by 24 hr. Twenty-four hours following TGF-beta 1 treatment, cm2 and cm4 ...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/s0006-2952(97)00219-0
更新日期:1997-08-15 00:00:00
abstract::Cyclodextrins generally exhibit hemolytic activity, some at concentrations as low as 1-10 mg/mL or lower. However, we found previously that a highly polysulfated cyclodextrin has no demonstrable hemolytic activity (Macarak et al., Biochem Pharmacol 42: 1502-1503, 1991). In the present study, we determined that, in fac...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/0006-2952(93)90244-q
更新日期:1993-03-09 00:00:00
abstract::There is evidence to suggest that the oxidative metabolism of hydralazine (HP), an antihypertensive drug, may represent a toxic pathway which could account for some of the adverse effects of the drug. Experiments were done to determine whether the hepatic oxidative metabolism of HP is associated with the formation of ...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/0006-2952(87)90549-1
更新日期:1987-08-15 00:00:00
abstract::Calcium signaling robustly inhibits AC6 activity in membrane preparations and in intact cells via capacitative calcium entry (CCE). However, the release of intracellular calcium has not been demonstrated to robustly alter AC6 signaling and activation of Galpha(q)-coupled receptors in tissues that express AC6 enhances ...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/j.bcp.2005.04.007
更新日期:2005-07-01 00:00:00
abstract::The growth inhibitory effects of 5-fluorouracil (FUra) or 5-fluoro-2'-deoxyuridine (FdUrd) combined with 5-methyltetrahydrofolate (5-CH3-H4PteGlu) were determined, as a function of time, dose, and sequence of exposure, on human T-lymphoblast leukemia cells, CCRF-CEM. Synergistic inhibitory effects on cell growth were ...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/0006-2952(87)90201-2
更新日期:1987-09-15 00:00:00
abstract::Antinociceptive synergism between spinally administered morphine and clonidine decreases to an additive interaction in morphine- and clonidine-tolerant mice. Spinally administered protein kinase C (PKC) inhibitors also decrease the synergism to addition. To determine whether chronic morphine or clonidine treatment alt...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/s0006-2952(99)00107-0
更新日期:1999-08-01 00:00:00
abstract::Deoxycytidine kinase (dCK) and deoxycytidine deaminase (dCDA) are two key enzymes in the activation and inactivation, respectively, of deoxycytidine (dCyd) and several chemotherapeutically important nucleoside analogues. To investigate whether supplementation of docosahexaenoic acid, an n-3 fatty acid found mainly in ...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/s0006-2952(01)00900-5
更新日期:2002-02-15 00:00:00
abstract::The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor and member of the bHLH/PAS (basic Helix-Loop-Helix/Per-Arnt-Sim) family of chemosensors and developmental regulators. It represents a multifunctional molecular switch regulating endo- and xenobiotic metabolism as well as cell proliferation ...
journal_title:Biochemical pharmacology
pub_type: 杂志文章,评审
doi:10.1016/j.bcp.2006.01.017
更新日期:2006-08-14 00:00:00
abstract::The stimulated uptake of 45Ca2+ into incubated cerebrocortical synaptosomes caused by veratrine (75 microM) was blocked by low concentrations of verapamil (0.5-30 microM) which did not prevent or reduce depolarization as judged by efflux of potassium (K+). However, verapamil did not prevent amino acid neutrotransmitte...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/0006-2952(85)90314-4
更新日期:1985-06-01 00:00:00
abstract::Antibodies raised against purified hog renal or intestinal brush border protein or against purified hog kidney angiotensin I converting enzyme (ACE) were used to characterize renal and intestinal brush border ACE by techniques of differential solubilization, fused-rocket, line absorption and crossed-immunoelectrophore...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/0006-2952(83)90554-3
更新日期:1983-01-15 00:00:00
abstract::The present study addressed the question of whether the number of myocardial beta-adrenoceptors in rats with 4- to 6-week streptozotocin-induced diabetes is regulated in a transcriptional or translational manner. Radioligand binding experiments with [3H]CGP 12177 {4-(3-t-butylamino-2-hydroxypropoxy)-[5,7-3H]benzimidaz...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/s0006-2952(99)00164-1
更新日期:1999-09-01 00:00:00
abstract::The experiments were designed to investigate some details of the action of 3-methylcholanthrene (3-MC) on the regulation of transcription. After a single intraperitoneal dose of 3-MC a significant increase in the activities of both nucleolar and nucleoplasmic protein kinases in hepatic cells of young rats was found. T...
journal_title:Biochemical pharmacology
pub_type: 杂志文章
doi:10.1016/0006-2952(82)90343-4
更新日期:1982-03-15 00:00:00