Adrenergic presynaptic receptors: examination of a hypothesis in guinea pig vas deferens.

abstract：:Liver diseases are associated with a decrease in hepatic drug elimination, but there is evidence that cirrhosis does not result in uniform changes of cytochrome P450 (CYP) isoenzymes. The objective of this study was to determine the content and activity of four CYP isoenzymes in the bile duct ligation and carbon tetra...

journal_title：Canadian journal of physiology and pharmacology

authors： Bastien MC,Leblond F,Pichette V,Villeneuve JP

更新日期：2000-11-01 00:00:00

abstract：:Inhibition of prostaglandin synthesis together with vagally mediated peristaltic contractions are essential if mucosal injury is to occur in the stomach of indomethacin-treated rats. The neomycin group of antibiotics has been shown to interfere with acetylcholine release. Agents blocking peristalsis have been demonstr...

journal_title：Canadian journal of physiology and pharmacology

authors： Mersereau WA,Hinchey EJ

更新日期：1989-09-01 00:00:00

abstract：:Tension responses to ramp shortening of varying speed in whole muscle or single fibres from the plateau of an isometric tetanus, revealed at least two distinct phases. There was a fast initial drop in tension followed by a change of slope and a definite inflexion on the tension record. As the velocity of the imposed l...

journal_title：Canadian journal of physiology and pharmacology

authors： Bressler BH

更新日期：1985-12-01 00:00:00

abstract：:Rats were treated daily with atropine (2.5 mg/kg), imipramine (5 mg/kg), viloxazine (5 mg/kg), or saline for 14 days. Thirty-six hours following the final injection the rats were anaesthetized with urethane and the sensitivity of neurones in the somatosensory cortex to iontophoretically applied acetylcholine (ACh) was...

journal_title：Canadian journal of physiology and pharmacology

authors： Jones RS

更新日期：1980-05-01 00:00:00

abstract：:The effects of neomycin sulfate were examined upon the discharge activity and electrical membrane properties of an isolated invertebrate sensory neuron, the crayfish stretch receptor neuron. Neomycin depressed cell discharge activity in a concentration-dependent manner over the concentration range of 0.01-1.0 mM. Sign...

journal_title：Canadian journal of physiology and pharmacology

authors： Nation PN,Roth SH

更新日期：1988-01-01 00:00:00

abstract：:In a Latin square design, nine New Zealand white male rabbits (2.8-4.8 kg) each received intravenous indocyanine green (ICG) in doses of 2.5, 12.5, and 25 mg/kg. A period of 4 weeks separated consecutive experiments. A specific high-pressure liquid chromatographic (HPLC) assay and the traditional spectrophotometric (S...

journal_title：Canadian journal of physiology and pharmacology

authors： Thiessen JJ,Rappaport PL,Eppel JG

更新日期：1984-09-01 00:00:00

abstract：:The mesangial cell is a contractile secreting cell found in a key position in the renal glomerulus. Several kidney and systemic diseases are associated with dysfunctions of the mesangial cells. We compared the effect of bradykinin (BK; B2 agonist) and des-Arg9-bradykinin (DBK; B1 agonist) on intracellular calcium mobi...

journal_title：Canadian journal of physiology and pharmacology

authors： Girolami JP,Ouardani M,Bascands JL,Pécher C,Bompart G,Leung-Tack J

更新日期：1995-07-01 00:00:00

abstract：:The historical perspective as well as the nature and causes of acid precipitation are presented. The toxicological effects of acid precipitation on lakes, other water bodies, fish, and invertebrate fauna are reviewed. In addition, the effects of this phenomenon on soil productivity and forest growth are examined. It a...

journal_title：Canadian journal of physiology and pharmacology

authors： Rutherford GK

更新日期：1984-08-01 00:00:00

abstract：:The purpose of this study was to elucidate the mechanism whereby a potassium infusion led to an elevation in the urine minus blood (ohm-B) PCO2 difference in alkaline urine of the rabbit. Rabbits given 9alpha-fluorohydrocortisone 16 h prior to study had a significantly high olm-B PCO2 than control rabbits. However, th...

journal_title：Canadian journal of physiology and pharmacology

authors： Robson WL,Halperin ML,Stinebaugh BJ,Goldstein MB

更新日期：1981-03-01 00:00:00

abstract：:NTPDase is one of the principal enzymes involved in the sequential hydrolysis of ATP. In the present study, the presence and functionality of NTPDase in the mesenteric vein and artery were examined. Adenosine triphosphate (ATP) (0.01-1000 pmol) induces a dose-dependent vasodilation in the isolated arterial and venous ...

journal_title：Canadian journal of physiology and pharmacology

authors： Duval M,Beaudoin AR,Bkaily G,Gendron FP,D' Orléans-Juste P

更新日期：2003-03-01 00:00:00

abstract：:Curare action on nicotinic acetylcholine receptors has a number of facets, of which the best known is competitive antagonism. Here we describe the weak agonist action of 10(-5) M curare on the murine skeletal muscle cell line, G8. Although curare induces no depolarization in G8 cells, single-channel recordings reveal ...

journal_title：Canadian journal of physiology and pharmacology

authors： Morris CE,Montpetit MR,Sigurdson WJ,Iwasa K

更新日期：1989-02-01 00:00:00

abstract：:Metabolic syndrome (MS) is a combination of medical disorders that increase the risk of developing cardiovascular disease and diabetes. MS is associated with obesity, increased blood pressure, hyperlipidemia, and hyperglycemia. This study was designed to investigate the pharmacological profile of phentolamine, a nonse...

journal_title：Canadian journal of physiology and pharmacology

authors： Zhou K,Kumar U,Yuen VG,McNeill JH

更新日期：2012-08-01 00:00:00

abstract：:This study investigated the gastroprotective effects of N-acetylcysteine (NAC) against indomethacin-induced gastric ulcer in rats. Ulceration was induced by a single oral administration of indomethacin (30 mg/kg). 50 male albino rats were allocated into 5 equal groups: control group received normal saline orally, indo...

journal_title：Canadian journal of physiology and pharmacology

authors： Soliman NA,Zineldeen DH,Katary MA,Ali DA

更新日期：2017-04-01 00:00:00

abstract：:The effects of 5-hydroxytryptamine (5-HT) on spinal motoneurons were examined in pentobarbital-anaesthetized cats and in nonanaesthetized decerebrate cats by intracellular recording and extracellular iontophoresis of 5-HT. 5-HT first induced a depolarization and then a long-lasting hyperpolarization (up to 60 min) wit...

journal_title：Canadian journal of physiology and pharmacology

authors： Zhang L

更新日期：1991-02-01 00:00:00

abstract：:Cerebrocrast is a novel lipophilic dihydropyridine derivative with potential neuroprotective and antidiabetic properties. We have analyzed its interaction with L-type (CaV1.2b) and T-type (CaV3.1) calcium channels using a whole-cell patch clamp in HEK 293 cells. Cerebrocrast inhibited current flux through both CaV1.2b...

journal_title：Canadian journal of physiology and pharmacology

authors： Drígelová M,Tarabová B,Duburs G,Lacinová L

更新日期：2009-11-01 00:00:00

abstract：:Male spontaneously hypertensive stroke-prone (SHRsp) rats were fed 4% NaCl diets containing either 0.75% (normal) K or 2.11% (high) K, starting at 6 weeks of age. After 8 months on these diets, 40 out of 58 SHRsp rats on the 0.75% K diet had died (69% mortality) versus 2 dead out of 95 on the 2.11% K diet (2% mortalit...

journal_title：Canadian journal of physiology and pharmacology

authors： Tobian L

更新日期：1986-06-01 00:00:00

abstract：:Simple and complex cells of visual areas of cats may be reliably classified according to the modulatory index (MI) of their responses. This investigation is aimed at analysing the MI in area 18 when a small region (about 200-400 microm in diameter) of area 17 was inactivated with a microinjection of GABA, in anestheti...

journal_title：Canadian journal of physiology and pharmacology

authors： Chabli A,Fortin S,Shumikhina S,Molotchinikoff S

更新日期：1999-03-01 00:00:00

abstract：:The sodium-hydrogen exchanger (NHE) helps the cell to recover from intracellular acidosis. In this study, we have investigated the effect of HOE 642 (a specific NHE1 blocker) on papillary muscles from rats and guinea pigs during transient acidosis and PKC activation by recording developed force (DF), action potential ...

journal_title：Canadian journal of physiology and pharmacology

authors： Sundset R,Bertelsen G,Ytrehus K

更新日期：2003-10-01 00:00:00

abstract：:The effect of adrenaline on the membrane transport of 3-methylglucose was studied in perifused isolated rat left atria that had been fully arrested. In this preparation a high concentration of adrenaline stimulated and a low one decreased sugar transport. The stimulatory effect was strongly inhibited by the beta-adren...

journal_title：Canadian journal of physiology and pharmacology

authors： Bihler I,Sawh PC

更新日期：1976-10-01 00:00:00

abstract：:Patients with Crohn's disease (CD) have higher risk for osteoporosis following decreased level of osteocalcin. We hypothesize that active inflammation following Mycobacterium avium subsp. paratuberculosis (MAP) infection results in elevation of undercarboxylated osteocalcin (ucOC) and downregulation of active osteocal...

journal_title：Canadian journal of physiology and pharmacology

authors： Naser A,Qasem A,Naser SA

更新日期：2018-07-01 00:00:00

abstract：:A method for the determination of the specific activity of plasma glycerol is described. Anionic contaminants are first removed from deproteinzed plasma by anionic exchange resins (treated plasma). Glycerol in treated plasma is then quantitatively converted to glycerol-3-phosphate (G3P), which is isolated by column ch...

journal_title：Canadian journal of physiology and pharmacology

authors： Gauthier C,Layberry R

更新日期：1982-06-01 00:00:00

abstract：:Amiodarone is a new antiarrhythmic drug, commonly coadministered with digoxin in various cardiac disorders. Amiodarone caused a 10-fold increase of serum digoxin in rats, when the two drugs were simultaneously administered. Amiodarone significantly reduced digoxin uptake by renal cortical slices in the rat, and failed...

journal_title：Canadian journal of physiology and pharmacology

authors： Koren G,Soldin S,Macleod SM

更新日期：1983-12-01 00:00:00

abstract：:In rats anesthetized with alpha-chloralose, doses of 0.1, 0.5, and 1 g/kg of ethanol produced an upward shift of baroreflex curves constructed by plotting the heart rate response against mean arterial pressure following evoked rises in mean arterial pressures by phenylephrine or angiotensin II. Whereas the upward shif...

journal_title：Canadian journal of physiology and pharmacology

authors： Abdel-Rahman AR,Russ R,Strickland JA,Wooles WR

更新日期：1987-05-01 00:00:00

abstract：:Although mitochondrial transcription factor A (TFAM) is a protective component of mitochondrial DNA and a regulator of calcium and reactive oxygen species (ROS) production, the mechanism remains unclear. In heart failure, TFAM is significantly decreased and cardiomyocyte instability ensues. TFAM inhibits nuclear facto...

journal_title：Canadian journal of physiology and pharmacology

authors： Kunkel GH,Chaturvedi P,Thelian N,Nair R,Tyagi SC

更新日期：2018-02-01 00:00:00

abstract：:Sarcoplasmic reticulum (SR) calcium handling in diaphragm was compared between mdx mice (7-8 weeks old) and age-matched controls. The total SR Ca2+ load was released from the SR by rapidly cooling muscle bundles from 22 to -1 degree C. The plateau amplitude of the rapid cooling contracture (RCC) was considered as an i...

journal_title：Canadian journal of physiology and pharmacology

authors： Khammari A,Péréon Y,Baudet S,Noireaud J

更新日期：1998-12-01 00:00:00

abstract：:The objective of this study was to explore the action of angiotensin II (AII) on cardiac contractility and cyclic AMP (cAMP) generation by forskolin and isoproterenol in the hypertrophic myocardium of the salt-sensitive Dahl rat. Inbred Dahl S and Dahl R rats that had been on a diet supplemented with 6% NaCl were stud...

journal_title：Canadian journal of physiology and pharmacology

authors： Sunga PS,Rabkin SW

更新日期：1994-06-01 00:00:00

abstract：:Oxidative stress plays a vital role in the pathogenesis of neurodegenerative diseases. Chikusetsu saponin V (CsV), the most abundant member of saponins from Panax japonicus (SPJ), has attracted increasing attention for its potential to treat neurodegenerative diseases. However, the mechanisms are unclear. Our study in...

journal_title：Canadian journal of physiology and pharmacology

authors： Wan J,Deng L,Zhang C,Yuan Q,Liu J,Dun Y,Zhou Z,Zhao H,Liu C,Yuan D,Wang T

更新日期：2016-09-01 00:00:00

abstract：:The purpose of this study was to examine the effects of norepinephrine infusion alone and during alkalosis on oxygen uptake in the dog gastrocnemius-plantaris muscle group under conditions of constant muscle blood flow. The animals were not cold acclimatized. Blood flow was pump controlled, alkalosis was produced by h...

journal_title：Canadian journal of physiology and pharmacology

authors： Chapler CK,Stainsby WN,Gladden LB

更新日期：1980-01-01 00:00:00

abstract：:Normal penile erectile function is dependent on arterial adequacy, appropriate venous occlusion, neurohumoral factors, and finally the relaxation of penile cavernous trabecular smooth muscle. The present experiments were designed to test whether compounds related to endothelium-derived relaxing factor have a role in p...

journal_title：Canadian journal of physiology and pharmacology

authors： Heaton JP

更新日期：1989-01-01 00:00:00

abstract：:We previously reported that calpain, the Ca2+-sensitive cysteine protease, gets involved in atherogenesis. This study aimed to investigate the effects of calpain inhibitor I (CAI, 5 mg/kg per day) with or without NG-nitro-l-arginine-methyl ester (l-NAME) (100 mg/kg per day), the inhibitor of nitric oxide synthase (NOS...

journal_title：Canadian journal of physiology and pharmacology

authors： Yu L,Yin M,Yang X,Lu M,Tang F,Wang H

更新日期：2018-01-01 00:00:00