Abstract：
:Acute administration of delta 9-tetrahydrocannabinol (THC) (50 mg/kg) at puberty (35-40 days) significantly (P less than 0.05) reduced Ca2+ ATPase activity in hypothalamic plasma membranes but increased, although not significantly, enzyme activity in hypothalamic tissue obtained from adult mice. In contrast, testicular Ca2+ ATPase activity was increased in pubertal THC-treated males, and significantly reduced in adults. Pituitary Ca2+ ATPase activity exhibited a dose-related decrease after acute THC administration at 0.5, 5 or 50 mg/kg, but there were no differential effects of age. Pituitary plasma membranes obtained from THC-treated males did not respond to in vitro exposure to luteinizing hormone releasing hormone (LHRH, 10(-7) M) with the marked reduction (approximately 40%) in Ca2+ ATPase activity observed in pituitaries from oil-treated controls. In addition, effects of THC appear specific for Ca2+ ATPase activity, since Mg2+ ATPase and Na+/K+ ATPase activities were not affected. These findings indicate that acute in vivo administration of THC influences Ca2+ membrane transport, in particular Ca2+ ATPase activity. These effects occur at each level of the hypothalamic-pituitary-gonadal (HPG) axis, are related to dose and developmental age at exposure, and also appear specific for Ca2+-dependent ATPase activity. Furthermore, THC exposure modulates pituitary sensitivity to LHRH receptor-mediated effects on Ca2+ ATPase activity. Therefore, effects on Ca2+ membrane transport may be involved in acute THC actions on hormonal activity at these HPG sites.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Dalterio SL,Bernard SA,Esquivel CRdoi
10.1016/0014-2999(87)90186-5subject
Has Abstractpub_date
1987-05-07 00:00:00pages
91-100issue
1eissn
0014-2999issn
1879-0712pii
0014-2999(87)90186-5journal_volume
137pub_type
杂志文章abstract：:The effects of tacrine (5 mg/kg i.p.) in lithium chloride (LiCl; 12 mEq/kg i.p.)-pretreated (24 h beforehand) animals and of kainate (10 mg/kg i.p.) on brain citrulline, the co-product of nitric oxide (NO) synthesis, were studied in rats. High performance liquid chromatography analysis of whole brain tissue homogenate...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(95)00689-3
更新日期：1995-12-27 00:00:00
abstract：:The responsiveness of the guinea-pig esophageal muscularis mucosae to arachidonic acid (AA) and its cyclooxygenase and lipoxygenase metabolites was examined in vitro. AA (0.1-30 microM) produced a concentration-dependent contraction of the muscularis mucosae (mean EC50 +/- S.E.M. = 5.1 +/- 1.0 microM). The contraction...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(85)90519-9
更新日期：1985-08-07 00:00:00
abstract：:The effects of (-)-(R)-2-methyl-3-(1-pyrrolidinyl)-4'- trifluoromethylpropiophenone monohydrochloride (NK433), a novel centrally acting muscle relaxant, on masticatory muscle reflexes were investigated in rats. NK433 inhibited the monosynaptic tonic vibration reflex of the masseter muscle and the polysynaptic tonic pe...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(95)00783-0
更新日期：1996-02-29 00:00:00
abstract：:3-Methoxytyramine (3-MT), an extraneuronal metabolite of dopamine, present in the synaptic cleft at a very low amount (low nanomolar range), comparable to dopamine concentration, is generally regarded as a biologically inactive compound. We have shown in this study that 3-MT binds to the rat noradrenergic cortical alp...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2008.09.033
更新日期：2008-12-03 00:00:00
abstract：:The present study was undertaken to investigate the effects of intracavernosal injections of adrenomedullin, a novel hypotensive peptide, on penile erection in anesthetized cats. Responses to adrenomedullin were compared to those elicited by intracavernosal injection of the control triple-drug combination (1.65 mg pap...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(96)00924-7
更新日期：1997-01-14 00:00:00
abstract：:We investigated the relationship between tension development and the cytosolic free Ca2+ level ([Ca2+]i) on exposure of the endothelium-denuded isolated rat aorta to palmitoyl-L-alpha-lysophosphatidylcholine. Lysophosphatidylcholine concentration-dependently induced a gradual increase in [Ca2+]i. Application of 10(-4)...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(99)00458-6
更新日期：1999-08-06 00:00:00
abstract：:Dinitrosyl iron complexes (DNIC) with glutathione exert a cytotoxic effect on endometrioid tumours in rats with surgically induced experimental endometriosis. Intraperitoneal treatment of rats (Group 1) with DNIC (12.5μmoles/kg, daily, for 12 days), beginning with day 4 after the surgical operation (implantation of tw...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2014.01.002
更新日期：2014-03-15 00:00:00
abstract：:The effects of the two prandial glucose regulators, repaglinide and nateglinide, on ATP-sensitive K(+) (K(ATP)) channel activity, membrane potential and exocytosis in single rat pancreatic A-cells were investigated using the patch-clamp technique. K(ATP) channel activity was reversibly blocked by repaglinide (K(d)=22 ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(99)00754-2
更新日期：1999-12-10 00:00:00
abstract：:Prostate cancer is one of the most severe malignancies in men, and many genes and non-coding RNAs, included microRNAs (miRs), have been demonstrated to regulate prostate cancer progression. In the present study, we investigated the role of miR-671 in prostate cancer cell proliferation. We found that miR-671 was signif...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2018.01.016
更新日期：2018-03-15 00:00:00
abstract：:Alcuronium is known to stabilize allosterically the binding of the muscarinic antagonist N-methylscopolamine to muscarinic M2 receptors and thus to elevate the equilibrium binding of N-methylscopolamine in homogenized cardiac tissue. In order to check for a functional consequence of this effect, the action of alcuroni...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(94)00664-s
更新日期：1995-01-05 00:00:00
abstract：:Perhexiline, a "metabolic" anti-anginal agent currently under investigation in management of congestive heart failure and acute coronary syndromes improves platelet nitric oxide responsiveness in patients with impaired responsiveness. The current study investigated possible interactions between perhexiline and the nit...
journal_title：European journal of pharmacology
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.ejphar.2007.01.001
更新日期：2007-03-29 00:00:00
abstract：:Streptococcal toxic shock syndrome (STSS) is associated with a high mortality rate. The M1 serotype of Streptococcus pyogenes is most frequently associated with STSS. Herein, we examined the role of Ras signaling in M1 protein-induced lung injury. Male C57BL/6 mice received the Ras inhibitor (farnesylthiosalicylic aci...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2014.03.029
更新日期：2014-06-15 00:00:00
abstract：:EMD 57445 ((S)-(-)-[4-hydroxy-4-(3,4-benzodioxol-5-yl) -piperidin-1-ylmethyl]-3-(4-methoxyphenyl)-oxazolidin- 2-one) is a new sigma receptor ligand with only marginal affinity for many other (including dopamine) receptors. In the present study, central, particularly neuroleptic-like, effects of this compound were eval...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(96)00602-4
更新日期：1996-11-21 00:00:00
abstract：:Cerebral ischemia impairs physiological form of synaptic plasticity such as long-term potentiation (LTP). Clinical symptoms of cognitive dysfunction resulting from cerebral ischemia are associated with neuron loss and synaptic function impairment in hippocampus. It has been widely reported that cordycepin displays neu...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2019.04.015
更新日期：2019-06-15 00:00:00
abstract：:Kappa- and mu-opioid binding site affinities of the kappa-selective ligand U62066 and its optical isomers, (+)-U63639 and (-)-U63640 were compared with those of the structurally related ligand PD117302 and its respective isomers, (+)-PD123497 and (-)-PD123475. The relative efficacies of each compound were also establi...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(89)90512-8
更新日期：1989-12-07 00:00:00
abstract：:The renal vascular effects of dopaminomimetics were studied in the isolated perfused rat kidney after pretreatment with 10(-5) M phenoxybenzamine and 10(-5) M sotalol and after contraction of the vascular bed with prostaglandin F2 alpha (10(-7) to 3 x 10(-6) M). Under these conditions, our criterion for vascular dopam...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(82)90157-1
更新日期：1982-10-15 00:00:00
abstract：:Morphine 6-glucuronide, a major metabolite of morphine with potent analgesic actions, is a potent inhibitor of intestinal motility when administered to rats by the intracerebroventricular (i.c.v.) route. Morphine 6-glucuronide was 62-fold more active than morphine in inhibiting gastrointestinal transit, whereas it was...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(94)90201-1
更新日期：1994-03-03 00:00:00
abstract：:(±)-3,4-Methylenedioxymethamphetamine (MDMA) is an illicit drug that evokes transporter-mediated release of serotonin (5-HT) in the brain. 5-HT transporter (SERT) proteins are also expressed in non-neural tissues (e.g., blood), and evidence suggests that MDMA targets platelet SERT to increase plasma 5-HT. Here we test...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2011.10.033
更新日期：2012-01-15 00:00:00
abstract：:Cells exposed to ionizing radiation show DNA damage, apoptosis, chromosomal aberrations or increased mutation frequency and for a long time it was generally accepted that these effects resulted from ionization of cell structures and the action of reactive oxygen species formed by water radiolysis. In the last few year...
journal_title：European journal of pharmacology
pub_type： 杂志文章,评审
doi：10.1016/j.ejphar.2009.07.028
更新日期：2009-12-25 00:00:00
abstract：:Adjuvant-induced arthritis is associated with body weight loss and decreased pituitary growth hormone (GH) and hepatic insulin-like growth factor-I (IGF-I) synthesis. Cytokines as tumor necrosis factor (TNF) mediate wasting associated with chronic inflammation. The aim of this study was to analyse whether the inhibiti...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2006.02.035
更新日期：2006-04-24 00:00:00
abstract：:The aim of this study was to investigate the effects of peritonitis on spontaneous contractions of ileum and jejunum smooth muscles isolated from rats. Peritonitis was induced by cecal ligation and puncture in 8 rats. Another group of 8 rats underwent a sham operation and acted as controls. Twenty-four hours after the...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2007.10.064
更新日期：2008-02-02 00:00:00
abstract：:Dextromethorphan which is an active ingredient in many cough medicines has been previously shown to potentiate amnesic effect of morphine in rats. However, the effect of dextromethorphan, that is also a noncompetitive N-methyl-D-aspartate (NMDA) receptor antagonist, in combination with morphine on hippocampus-based lo...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2016.11.025
更新日期：2017-01-05 00:00:00
abstract：:Our previous studies demonstrated that light-induced vascular relaxation (photorelaxation) was mediated by a tissue source of nitric oxide that was independent of endothelial nitric oxide synthase (eNOS), but sensitive to inhibitors of soluble guanylate cyclase, extracellular nitric oxide scavengers and possessed the ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2007.01.016
更新日期：2007-04-10 00:00:00
abstract：:The administration of [D-Ala2,Met5]enkephalinamide (D-AME) and [D-Ala2,Leu5]enkephalinamide (D-ALE) into the right atrium of decerebrate rats caused bradycardia, a slight transient biphasic blood pressure response and apnea within 1-2 sec. Apnea was followed by rapid shallow breathing. These effects were dose related ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(82)90372-7
更新日期：1982-02-19 00:00:00
abstract：:Previous work from our laboratory has indicated that ovine prolactin can produce a rapid stimulation (within 1 h) of dopamine release from nigrostriatal and mesolimbic dopaminergic neurons of male rats. In the present experiment we attempted to determine whether this effect of prolactin was a function of an increase i...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(89)90361-0
更新日期：1989-08-03 00:00:00
abstract：:The experiments concerned the effect of ethacrynic acid (0.5 mM) on the adenosine triphosphate (ATP) content of rat mast cells and the effect on histamine release induced by the ionophore A23187 (10 microM). Ethacrynic acid decreased the ATP level of the cells in presence of antimycin A and glucose as well as in prese...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(83)90285-6
更新日期：1983-09-02 00:00:00
abstract：:In pentobarbital (35.0 mg/kg) anaesthetised dogs, bolus injections of prazosin into the femoral artery (3.0--300.0 microgram) provoked a dose-related fall in the vascular resistance of the innervated hind limb. In contrast to papaverine, prazosin failed to produce the same effect in dogs under spinal anaesthesia even ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(78)90101-2
更新日期：1978-06-01 00:00:00
abstract：:Pain remains a major clinical challenge because there are no effective analgesics for some pain conditions and the mainstay analgesics for severe pain, opioids, have serious unwanted effects. There is a dire need for novel analgesics in the clinic. Imidazoline receptors are a family of three receptors (I(1), I(2) and ...
journal_title：European journal of pharmacology
pub_type： 杂志文章,评审
doi：10.1016/j.ejphar.2011.02.038
更新日期：2011-05-11 00:00:00
abstract：:The effect of a novel leuktriene B4 receptor antagonist N-[5[[8-(1-hydroxy-2- phenyl)ethyl]dibenzofuran-2yl]5-hydroxypentanoyl]pyrrolidine (PF 10042) has been evaluated in comparison with 2-[3(1-hydroxyhexyl)phenoxymethyl]quinoline hydrochloride (PF 5901), a specific inhibitor of the 5-lipoxygenase pathway of arachido...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0926-6917(95)90057-8
更新日期：1995-12-07 00:00:00
abstract：:Substance P and its tachykinin NK(1) receptors are highly expressed in brain regions involved in emotional control. We recently showed that NK(1)-mediated substance P neurotransmission is deeply involved in the control of aggressiveness. To get further insights into the NK(1) receptor/aggression relationship, we studi...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2009.03.050
更新日期：2009-06-02 00:00:00
