Characterization of a functional angiotensin II receptor in Xenopus laevis heart.

Abstract:

:High-affinity (104 +/- 18 pmol/l) and high-density (204 +/- 25 fmol/mg) angiotensin II (AII) binding sites have been identified in Xenopus laevis heart membranes. Competition binding of [125I]Sar1,Ile8 angiotensin (SIA) to these receptors by peptide analogs selective for the mammalian AII receptor subtypes AT1 and AT2 suggested that the amphibian AII binding sites were more closely related to the AT1 receptor subtype. Also in common with AT1 receptors, dithiothreitol and GTP gamma S inhibited [125I]SIA binding to Xenopus heart receptors, exhibiting IC50 values of 600 and 0.95 mumol/l, respectively. In addition, Xenopus oocytes injected with Xenopus heart mRNA were capable of mobilizing calcium when exposed to AII, demonstrating that Xenopus AII receptors are functionally linked to a second-messenger system similar to that coupled to mammalian AT1 receptors. However, in contrast to both AT1 and AT2 receptor subtypes, nonpeptide antagonists DUP 753 and SK&F 108566 (AT1 receptor selective) and PD123319 (AT2 selective) did not bind the Xenopus AII receptors, thus establishing that the amphibian receptors were pharmacologically unique. Together, these results demonstrate that Xenopus heart AII receptors are functionally similar to mammalian AT1 receptors but are pharmacologically distinct from both AT1 and AT2 receptors.

journal_name

Pharmacology

journal_title

Pharmacology

authors

Aiyar N,Baker E,Pullen M,Nuthulaganti P,Bergsma DJ,Kumar C,Nambi P

doi

10.1159/000139186

subject

Has Abstract

pub_date

1994-04-01 00:00:00

pages

242-9

issue

4

eissn

0031-7012

issn

1423-0313

journal_volume

48

pub_type

杂志文章
  • Ca(2+)-induced translocation of protein kinase C during Ca(2+)-dependent histamine release from beta-escin-permeabilized rat mast cells.

    abstract::When rat mast cells were cultured for a short period in plastic dishes and adhering cells were permeabilized with beta-escin and exposed to Ca2+ at concentrations higher than 10(-7) mol/l, histamine release was induced dose-dependently. Protein kinase C (PKC) activity in the crude extracts obtained from adhering mast ...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000138874

    authors: Izushi K,Tasaka K

    更新日期:1992-01-01 00:00:00

  • Resting energy expenditure and the clearance of therapeutic proteins in pediatric subjects.

    abstract::The effect of age on the clearance (CL) of therapeutic proteins has not been explored extensively in pediatric subjects. Recently, resting energy expenditure (REE) has been proposed to link age-dependent CL with developmental changes. Allometric relationship was explored to assess the impact of REE on the CL of therap...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000362562

    authors: Lee SK

    更新日期:2014-01-01 00:00:00

  • Korean Red Ginseng Inhibits Amyloid-β-Induced Apoptosis and Nucling Expression in Human Neuronal Cells.

    abstract:INTRODUCTION:The accumulation of amyloid-β (Aβ) plaque in the brain is a characteristic feature of Alzheimer's disease (AD) and the cause of fatal oxidative damage to neuronal cells. Korean red ginseng (RG) is used extensively in traditional medicine and is known to have anti-oxidative and anti-inflammatory properties....

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000505592

    authors: Choi S,Lim JW,Kim H

    更新日期:2020-01-01 00:00:00

  • Studies on accumulation of (14C)-mescaline in brain homogenates: effects of psychotropic and other agents.

    abstract::Incubation of rat brain homogenates or 14,500 g pellet isolated from the homogenate with (14C)-mescaline was associated with accumulation of (14C)-mescaline in the pellet. 1.33 mumol/ml of chlorpromazine, trifluoperazine, fluphenazine, imipramine, desmethylimipramine, nortriptyline and amitriptyline inhibited the accu...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000136916

    authors: Shah NS,Gulati OD

    更新日期:1975-01-01 00:00:00

  • Cardioprotective effects of (2S,3R,4S)-N'-benzyl-N"-cyano-N-(3,4-dihydro-2-dimethoxymethyl-3-hydroxy-2-methyl-6-nitro-2H-benzopyran-4-yl)-guanidine (KR-31372) in rats and dogs.

    abstract::The cardioprotective effects of (2S,3R,4S)-N'-benzyl- N"-cyano-N-(3,4-dihydro-2-dimethoxymethyl-3-hydro- xy-2-methyl-6-nitro-2H-benzopyran-4-yl)-guanidine (KR-31372) were evaluated against ischemic/reperfusion injury in isolated rat hearts in vitro and in anesthetized rats and dogs in vivo. In isolated perfused rat he...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000074671

    authors: Lee BH,Seo HW,Yoo SE

    更新日期:2004-02-01 00:00:00

  • The synthetic PPARgamma agonist troglitazone inhibits IL-5-induced CD69 upregulation and eosinophil-derived neurotoxin release from eosinophils.

    abstract::Peroxisome proliferator-activated receptor-gamma (PPARgamma) is a nuclear receptor that regulates lipid metabolism. Recently, PPARgamma was reported to be a negative regulator in the immune system. Eosinophils also express PPARgamma, however, the role of PPARgamma in eosinophil functions is not well understood. Surfac...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000085034

    authors: Matsuwaki Y,Ueki S,Adachi T,Oyamada H,Kamada Y,Yamaguchi K,Kanda A,Hamada K,Kayaba H,Chihara J

    更新日期:2005-07-01 00:00:00

  • Novel thiazolidinones as potent anti-inflammatory and analgesic agents.

    abstract::Various new butyridenyl-2-hydroxybenzylidenyl-1,3-thiazolidinones were synthesized and characterized by elemental analyses, IR and PMR spectral data. The compounds were evaluated for their ability to afford protection against inflammation by carrageenin-induced oedema and cotton pellet implantation in albino rats of e...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000138130

    authors: Tandon M,Kumar P,Pande K,Bhalla TN,Barthwal JP

    更新日期:1985-01-01 00:00:00

  • Role of carbonic anhydrase in bone resorption induced by prostaglandin E2 in vitro.

    abstract::The possible role of carbonic anhydrase in bone resorption induced by prostaglandin E2 (PGE2) was studied using an in vitro neonatal mouse calvarial culture system. PGE2 (10(-6) M) was effective in stimulating resorption, as assessed by calcium release into culture media. This enhanced resorption was accompanied by si...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000138088

    authors: Hall GE,Kenny AD

    更新日期:1985-01-01 00:00:00

  • Differential hemodynamic effects of the nitric oxide donor pirsidomine in comparison to SIN-1, nitroprusside and nitroglycerin.

    abstract::The systemic and coronary hemodynamic effects of the nitrovasodilator, pirsidomine, were compared with SIN-1, nitroprusside, and nitroglycerin. Four groups consisting of 32 experiments were performed in 17 conscious dogs chronically instrumented for measurement of aortic and left ventricular pressure, left ventricular...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000139372

    authors: Arkonac BM,Kersten JR,Wynsen JC,Nijhawan N,Warltier DC

    更新日期:1996-02-01 00:00:00

  • Evaluation of the central effects of ergot alkaloids by means of electroencephalography.

    abstract::The effects of some ergot derivatives on the electroencephalogram and behavior of laboratory animals (mice, rats, rabbits) have been surveyed. The interference of bromocriptine on the dopaminergic central systems has been studied using behavioral (interference with the effects induced by L-dopa, 5HT, TRF or neurolepti...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000136819

    authors: Longo VG,Loizzo A

    更新日期:1978-01-01 00:00:00

  • Trichostatin A Induces Autophagy in Cervical Cancer Cells by Regulating the PRMT5-STC1-TRPV6-JNK Pathway.

    abstract:OBJECTIVE:The aim of this study was to investigate the effects of trichostatin A (TSA) on cervical cancer and the related mechanisms. METHODS:The HeLa and Caski cervical cancer cell lines were treated with different concentrations of TSA. Cell viability was measured by MTT assays. Cell apoptosis was analysed using flo...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000507937

    authors: Liu JH,Cao YM,Rong ZP,Ding J,Pan X

    更新日期:2020-11-03 00:00:00

  • Functional evidence for the presence of beta 3-adrenoceptors in the guinea pig common bile duct and colon.

    abstract::To determine the existence of beta 3-adrenoceptors in functional assays in isolated preparations for which data are lacking, we compared the effects of SR 58611A, a selective beta 3-adrenoceptor agonist, and isoprenaline in the guinea pig common bile duct, distal colon and urinary bladder. SR 58611A and isoprenaline r...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000139338

    authors: De Ponti F,Gibelli G,Crema F,Lecchini S

    更新日期:1995-11-01 00:00:00

  • Studies on pyrazinoylguanidine. 7. Effects of single oral doses in normal human subjects.

    abstract::In a three-phase study, single oral doses of placebo, followed in 1 week by pyrazinoylguanidine (PZG; 900 mg), followed in 3 weeks by pyrazinoic acid (PZA; 300 mg) were given to 8 normal male subjects. Blood analyses performed 0, 2 and 4 h after administration of placebo or drug revealed that compared to mean 0 h valu...

    journal_title:Pharmacology

    pub_type: 临床试验,杂志文章

    doi:10.1159/000028276

    authors: Vesell ES,Beyer KH Jr

    更新日期:1999-03-01 00:00:00

  • Comparative effects of pranidipine with amlodipine in rats with heart failure.

    abstract::The aim of the present study was to compare the cardioprotective properties of long-acting calcium channel antagonist pranidipine with amlodipine in rat model of heart failure induced by autoimmune myocarditis. Twenty-eight days after immunization the surviving rats were randomized for the oral administration of low-d...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000091746

    authors: Veeraveedu PT,Watanabe K,Ma M,Gurusamy N,Palaniyandi SS,Wen J,Prakash P,Wahed MI,Kamal FA,Mito S,Kunisaki M,Kodama M,Aizawa Y

    更新日期:2006-01-01 00:00:00

  • Effects of acetaldehyde on action potentials and Ca2+ currents in single atrial myocytes from the bullfrog.

    abstract:AIM:The purpose of the present study was to examine the effects of acetaldehyde on the contractile force and membrane potentials and currents in the bullfrog heart. METHODS:Contractile force was recorded using right atrial tissues, and membrane potentials and currents were measured by using whole cell patch clamp meth...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000342388

    authors: Chen FS,Satoh Y,Ide Y,Sugano T,Iimura M,Momose Y,Tsuchida K,Tagami M

    更新日期:2012-01-01 00:00:00

  • Increased dilator response to heptanol and octanol in aorta from DOCA-salt-hypertensive rats.

    abstract::This study tests the hypothesis that contractile responses in aortae of hypertensive rats are more dependent on gap junctional communication compared to those from normotensive rats. The experimental approach was pharmacological, using inhibitors of gap junctional activity (heptanol and octanol). Two models of experim...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000056069

    authors: Leite R,Webb RC

    更新日期:2001-01-01 00:00:00

  • Transport of model compounds across the peritoneal membrane in the rat.

    abstract::The absorption into the systemic circulation of compounds administered intraperitoneally in large volumes was investigated in the rat. The influence on absorption of molecular weight, lipid-water partition coefficient (K), and dissociation constant (pKa) was studied. Nine neutral compounds ranging in molecular weight ...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000136874

    authors: Torres IJ,Litterst CL,Guarino AM

    更新日期:1978-01-01 00:00:00

  • Quantitative analysis of the electrocorticogram after forebrain ischemia in the rat.

    abstract::The purpose of the study was to test the hypothesis that the postischemic neuronal damage is accompanied by changes of the electrocorticogram (ECoG) of freely moving rats during long-term recovery after forebrain ischemia. Ten minutes forebrain ischemia was induced in male Wistar rats. ECoG was recorded 1 day before a...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000139287

    authors: Peruche B,Klaassens H,Krieglstein J

    更新日期:1995-04-01 00:00:00

  • A new model for the study of opiate B-receptors: isolated splenic strip of the cat.

    abstract::Noradrenergic neurotransmission in the electrically stimulated isolated splenic strip of the cat was found to be modulated via opiate receptor. Pharmacodynamic parameters of morphine, methionine-enkephalin, azidomorphine, naloxone and N-cyclopropylmethyl-norazidomorphine (CAM) were determined. As CAM proved to be more...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000137467

    authors: Kerecsen L,Knoll J

    更新日期:1981-01-01 00:00:00

  • Analysis of the effects of halothane on Gi-coupled muscarinic M2 receptor signaling in Xenopus oocytes using a chimeric G alpha protein.

    abstract::Metabotropic G protein-coupled receptors have recently been recognized as targets for anesthetics and analgesics. In particular, G(q)-coupled receptors such as muscarinic M(1) receptors (M(1)R) and 5-hydroxytryptamine (5-HT) type 2A receptors have been reported to be targets for anesthetics. Much less is known, howeve...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000080106

    authors: Minami K,Uezono Y,Shiraishi M,Okamoto T,Ogata J,Horishita T,Taniyama K,Shigematsu A

    更新日期:2004-11-01 00:00:00

  • Effect of YM-44781, YM-44778 and YM-49598, novel tachykinin antagonists, in a drug-induced bladder contraction model.

    abstract::The radioligand binding profiles and in vivo pharmacological characteristics of YM-44781, YM-44778 and YM-49598, novel non-peptide tachykinin receptor antagonists, were examined and compared to those of FK-888 and GR-159897. Since no functional NK(3) receptors were found in the rat bladder, the emphasis will be on the...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000056193

    authors: Choppin A,Groke G,Bringas A,Stepan G,Dillon MP

    更新日期:2002-05-01 00:00:00

  • Pharmacokinetic evaluation of a novel benzopyridooxathiazepine derivative as a potential anticancer agent.

    abstract:BACKGROUND/AIMS:The in vivo metabolic profile of a benzopyridooxathiazepine (BPT) derivative, a potent tubulin polymerization inhibitor with a promising in vitro activity, was investigated. METHODS:The quantification of the BPT derivative and the identification of metabolites in the plasma of Wistar rats after i.p. an...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000368084

    authors: Bourdon F,Lecoeur M,Lebègue N,Gressier B,Luyckx M,Odou P,Dine T,Goossens JF,Kambia N

    更新日期:2014-01-01 00:00:00

  • Drug metabolism by the fetal stump-tailed monkey (Macaca arctoides). Hepatic microsomal N-demethylation and glucuronidation as measured by radiometric assays.

    abstract::Sensitive radiometric assays were adapted to study the development and kinetics of meperidine and methadone N-demethylation and morphine glucuronidation by microsomes isolated from livers of fetal stump-tailed macaques (Macaca arctoides). Times in development selected for study were midterm, three-quarter term, near t...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000137259

    authors: Dvorchik BH,Stenger VG,Hartman RD

    更新日期:1979-01-01 00:00:00

  • Availability of learned helplessness test as a model of depression compared to a forced swimming test in rats.

    abstract::This study was designed to evaluate the antidepressant activity of various antidepressants using the learned helplessness test (LH) or the forced swimming test (FS) in rats. Repeated treatment of the tricyclic antidepressants imipramine (10 mg/kg, p.o.), clomipramine (0.625 mg/kg, p.o.), amitriptyline (10 mg/kg, p.o.)...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000056126

    authors: Takamori K,Yoshida S,Okuyama S

    更新日期:2001-01-01 00:00:00

  • GPR35 is a target of the loop diuretic drugs bumetanide and furosemide.

    abstract::We report that the loop diuretic drugs bumetanide and furosemide used in the treatment of hypertension are GPR35 agonists. We utilized calcium flux, inositol phosphate accumulation, and dynamic redistribution assays to examine the pharmacology of these compounds on the human, mouse and rat GPR35. While potent on human...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000335127

    authors: Yang Y,Fu A,Wu X,Reagan JD

    更新日期:2012-01-01 00:00:00

  • Changes in arachidonic acid metabolite patterns in alloxan-induced diabetic rats.

    abstract::The vasodepressor responses to intravenous injections of arachidonic acid, and the formation of its metabolites, were studied in rats made diabetic 1 or 2 weeks after a 1-dose alloxan treatment. Arachidonic acid dose-dependently decreased the diastolic blood pressure in normal animals, but this hypotensive effect was ...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000138612

    authors: Hui SC,Ogle CW,Wang Z,An Y,Hu YH

    更新日期:1989-01-01 00:00:00

  • The Small Molecule Indirubin-3'-Oxime Inhibits Protein Kinase R: Antiapoptotic and Antioxidant Effect in Rat Cardiac Myocytes.

    abstract::Double-stranded, RNA-dependent protein kinase R (PKR) is a serine/threonine protein kinase activated by various stress signals. It plays an important role in inflammation, insulin sensitivity and glucose homeostasis. Increased PKR activity has been observed in obese humans as well as in obese diabetic mice. Indirubin-...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000441727

    authors: Udumula MP,Medapi B,Dhar I,Bhat A,Desai K,Sriram D,Dhar A

    更新日期:2016-01-01 00:00:00

  • Effects of paired analogs of angiotensin II and angiotensin III on rat smooth muscle.

    abstract::The effects of several paired analogs of angiotensin II and angiotensin III, designed as antagonists, have been compared in isolated smooth muscle (rat uterus) and by in vivo rat blood pressure assay. These analogs were (1) the angiotensin II series: (1-sarcosine, 7-X, 8-isoleucine-) angiotensin II, and (2) the angiot...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000137342

    authors: Moore GJ,Ko EM

    更新日期:1980-01-01 00:00:00

  • Stimulation of microsomal spironolactone metabolism by reduced glutathione.

    abstract::The first step in the conversion of spironolactone (SP) to its biologically active metabolites is deacetylation to 7 alpha-thiospirolactone (7 alpha-thio-SL). Studies were done to evaluate the effects of reduced glutathione (GSH) on SP deacetylation by adrenal microsomal preparations. In the absence of GSH, adrenal mi...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000139358

    authors: Colby HD,LaCagnin LB,Los LE

    更新日期:1996-01-01 00:00:00

  • A note on the complex metabolism of danthron infused into the rat.

    abstract::Danthron infused intravenously in rats shows a complex dose-dependent pattern of metabolism and excretion. The metabolites, particularly the more polar ones, are in general excreted predominantly in bile, to a lesser extent in urine. They can be separated as metabolite groups according to polarity and molecular size o...

    journal_title:Pharmacology

    pub_type: 杂志文章

    doi:10.1159/000139852

    authors: Sund RB,Junker T,Malterud KE

    更新日期:1993-10-01 00:00:00