Oxidative stress burden inhibits spermatogenesis in adult male rats: testosterone protective effect.

abstract：:Alterations of the ionic constituents of solutions perfused through the tissue of the posterior hypothalamic region in conscious cats elicited changes in body temperatures. Increasing the (Ca2+) to (Na+) ratio of the perfusion solution elicited falls in body temperature which were accompanied by changes in posture and...

journal_title：Canadian journal of physiology and pharmacology

authors： Jones DL,Veale WL,Cooper KE

更新日期：1978-08-01 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：:The lysosomal protease cathepsin D increased markedly in brown adipocytes during differentiation in primary cultures. Differentiated cells had 20 times the amount of immunoreactive cathepsin D found in preadipocytes. Cathepsin D mRNA, as estimated by relative RT-PCR, was also present in higher amounts in differentiate...

journal_title：Canadian journal of physiology and pharmacology

authors： Moazed B,Desautels M

更新日期：2002-06-01 00:00:00

abstract：:Our knowledge of the effects of exercise on the heart is limited by the predominant use of rats as an animal model. The rabbit has many advantages over the rat as an animal model to study. However, little work has characterized its capacity to exercise. The purposes of the present study were to determine if the rabbit...

journal_title：Canadian journal of physiology and pharmacology

authors： Meng H,Pierce GN

更新日期：1990-07-01 00:00:00

abstract：:Female rats subjected to 48 h of water deprivation drank more than similarly deprived males. There was no sexual difference in the dipsogenic responses to intracellular dehydration produced by intravenous hypertonic NaCl but females drank considerably more than males in response to the extracellular stimuli of hyperon...

journal_title：Canadian journal of physiology and pharmacology

authors： Kaufman S

更新日期：1980-10-01 00:00:00

abstract：:The mechanism whereby chronic rapid ventricular pacing induces severe heart failure is unclear, but the phenomenon is associated with a reduction in left ventricular ATP levels. Accordingly, the current study was undertaken to evaluate the acute effects of rapid ventricular pacing on hemodynamics, left ventricular ade...

journal_title：Canadian journal of physiology and pharmacology

authors： Simmons WW,Moe GW,Grima EA,Howard RJ,Armstrong PW

更新日期：1994-01-01 00:00:00

abstract：:In recent decades, the complexity of the endothelium and its major role in maintaining or altering blood vessel architecture are being revealed. In contrast, the vascular smooth muscle cell previously received the most attention. I suggest support of the hypothesis that the endothelium is the key to vascular disease. ...

journal_title：Canadian journal of physiology and pharmacology

authors： Todd ME

更新日期：1992-04-01 00:00:00

abstract：:For 10 days, dogs were fed a normal salt diet containing 70 mequiv. Na+/day (NSD) followed by a high salt diet containing 170 mequiv. Na+/day (HSD) or 240 mequiv. Na+/day (VHSD), or the order was reversed. K+ in these diets was fixed at 40 mequiv./day. The different diets did not influence the basal level of serum cat...

journal_title：Canadian journal of physiology and pharmacology

authors： Carrière S,Cardinal J,Le Grimellec C

更新日期：1980-09-01 00:00:00

abstract：:Spironolactone at 10 mg per kilogram per day was given to control and 'one-kidney-one-clip' hypertensive dogs for 6--7 weeks. Compared with untreated animals the treated animals had a lower arterial water content, a higher arterial, myocardial, and skeletal muscle sodium content, and variable changes in tissue potassi...

journal_title：Canadian journal of physiology and pharmacology

authors： Constantopoulos G,Gutkowska J,Genest J

更新日期：1979-06-01 00:00:00

abstract：:D-Serine, a recently identified gliotransmitter, serves as an endogenous coagonist binding to the glycine site of N-methyl-D-aspartate (NMDA) receptors. However, it is not clear whether this native ligand is able to bind to and modulate alpha-amino-3-hydroxyl-5-methyl-4-isoxazolepropionate (AMPA) receptors. In the pre...

journal_title：Canadian journal of physiology and pharmacology

authors： Gong XQ,Zabek RL,Bai D

更新日期：2007-05-01 00:00:00

abstract：:Barbital-sedated, warm-acclimated (WA) or cold-acclimated (CA) rats were infused intravenously with noradrenaline (NA) at doses that elicited graded calorigenic responses. Blood flow (Q) to the various bodies of brown adipose tissue (BAT), the major sites of the NA-induced calorigenesis, was measured with labeled micr...

journal_title：Canadian journal of physiology and pharmacology

authors： Foster DO,Depocas F,Frydman ML

更新日期：1980-08-01 00:00:00

abstract：:There is now evidence for the involvement of four beta-adrenoceptor populations in the regulation of cardiac function by catecholamines. Beta1- and beta2-adrenoceptor stimulation classically produces an increase in contractility. A fourth beta-adrenoceptor, as yet uncloned and designated provisionally as a beta4-adren...

journal_title：Canadian journal of physiology and pharmacology

authors： Gauthier C,Leblais V,Moniotte S,Langin D,Balligand JL

更新日期：2000-09-01 00:00:00

abstract：:We describe postsynaptic Ca2+ signals that subserve induction of two forms of neuronal plasticity, long-term potentiation (LTP) and long-term depression (LTD), in rat hippocampal neurons. The common induction protocol for LTP, a 1-s, 50-Hz tetanus, generates Ca2+ increases of about 50-Hz in dendritic spines of CA1 neu...

journal_title：Canadian journal of physiology and pharmacology

authors： Connor JA,Petrozzino J,Pozzo-Miller LD,Otani S

更新日期：1999-09-01 00:00:00

abstract：:Mechanisms leading to ifosfamide (IF)-induced renal damage have not been fully elucidated. Recent work suggests that localized renal tubular metabolism of IF and the production of the nephrotoxic chloroacetaldehyde may lead to nephrotoxicity. Presently no pharmacological method to reduce IF nephrotoxicity has been ide...

journal_title：Canadian journal of physiology and pharmacology

authors： Aleksa K,Halachmi N,Ito S,Koren G

更新日期：2005-06-01 00:00:00

abstract：:The pulmonary vascular resistance in a peripheral portion of the pulmonary vascular bed can be determined with a catheter wedged in a peripheral branch of the pulmonary artery, from the pressure increase induced by infusion of mixed venous blood at known flow rates. The volume of the wedged vascular bed can be estimat...

journal_title：Canadian journal of physiology and pharmacology

authors： Chabot F,Saunier C,Schrijen F

更新日期：1997-01-01 00:00:00

abstract：:Fetal and neonatal rats received daily subcutaneous injections of 10 microgram thyrotropin-releasing hormone (TRH) until 7 or 14 days postnatally. At 70 days the pups were challenged with 1 microgram TRH intravenously via an indwelling jugular cannula. Basal serum thyroxine, triiodothyronine, and thyroid-stimulating h...

journal_title：Canadian journal of physiology and pharmacology

authors： Walker P,Dussault JH

更新日期：1979-01-01 00:00:00

abstract：:Physical exercise is essential for the amelioration of insulin resistance. The mechanisms in charge of improved insulin resistance, regulated by exercise, are insufficient inquired. Previous researches revealed that SIRT6-mediated insulin signaling acts a crucial character in hepatic IR. The objective of our research ...

journal_title：Canadian journal of physiology and pharmacology

authors： Zhang Y,Yang Z,Xu Z,Wan J,Hua T,Sun Q

更新日期：2020-09-24 00:00:00

abstract：:The present study was designed to evaluate the role of endothelial NO in the hemodynamics and vascular changes that occur in heart failure following myocardial infarction in rats. Left ventricular systolic pressure (LVSP), mean blood pressure (MBP), aortic morphology (media thickness) and reactivity were evaluated in ...

journal_title：Canadian journal of physiology and pharmacology

authors： da Cunha V,Stefanon I,Mill JG

更新日期：2004-06-01 00:00:00

abstract：:Immediately following exposure to thiocyanate (SCN-)-containing solutions, the cystic fibrosis conductance regulator Cl- channel exhibits high unitary SCN conductance and anomalous mole fraction behaviour, suggesting the presence of multiple anion binding sites within the channel pore. However, under steady-state cond...

journal_title：Canadian journal of physiology and pharmacology

authors： Linsdell P

更新日期：2001-07-01 00:00:00

abstract：:Previously, we reported that thromboxane A2 (TxA2) mediates heart rate, adrenocorticotropin (ACTH), cortisol, and blood gas responses, although the specific site of action was not identified. In the present study, we interrupted vagal nervous transmission in chronically instrumented conscious sheep and infused the TxA...

journal_title：Canadian journal of physiology and pharmacology

authors： Cudd TA

更新日期：1998-12-01 00:00:00

abstract：:The intestinal uptake of 0.5 and 40 mM glucose, galactose, and 3-O-methyl glucose (3-O-MG) was examined in vitro in rabbits fed a high (HS) or a low (LS) sucrose diet. In animals with an intact intestinal tract, the jejunal uptake of 0.5 mM 3-O-MG was unaffected by the dietary content of sucrose, whereas the uptake of...

journal_title：Canadian journal of physiology and pharmacology

authors： Thomson AB

更新日期：1987-11-01 00:00:00

abstract：:The role of iron-loaded transferrin in xanthine-xanthine oxidase (X-XO) induced cardiac injury in isolated perfused rat hearts was examined. X (2 mM) - XO (10 U/L) perfusion resulted in contractile failure, a rise in resting tension, an increase in lipid peroxidation, and myocardial cell damage. The addition of transf...

journal_title：Canadian journal of physiology and pharmacology

authors： Tiede R,Sareen S,Singal PK

更新日期：1990-04-01 00:00:00

abstract：:The presence of different receptor populations within a given brain area can be effectively evaluated via the local injections of defined receptor agonists and antagonists. Using this approach, it has become evident that the nucleus basalis - cortical cholinergic pathway possesses an inhibitory GABAergic input to the ...

journal_title：Canadian journal of physiology and pharmacology

authors： Wood PL

更新日期：1986-03-01 00:00:00

abstract：:Sequestration of nitric oxide (NO) by subcellular fractions isolated from bovine pulmonary arterial medial layer (BPA) and rabbit platelets (RP) was studied utilizing a novel chemiluminescence--headspace gas technique. Sequestration in all fractions was similarly rapid (5 min) and remained constant for at least 30 min...

journal_title：Canadian journal of physiology and pharmacology

authors： Liu Z,Nakatsu K,Brien JF,Beaton ED,Marks GS,Maurice DH

更新日期：1993-12-01 00:00:00

abstract：:In addition to bronchial smooth muscle, histamine and other mediators act in bronchial asthma on the microcirculation of pulmonary connective tissue. The mediators induce enhanced blood flow, and by acting on the blood-tissue barrier, they induce increase in vasopermeability with edema and in more severe injury microh...

journal_title：Canadian journal of physiology and pharmacology

authors： Movat HZ

更新日期：1987-03-01 00:00:00

abstract：:The effects of estrogen and progesterone domination, achieved by administering estrogen (E) and estrogen plus progesterone (E + P), on rat uterine reactivity to Ca2+ and to Ca2+ channel ligands (antagonist and activator) were compared. The inhibitory activities of nifedipine, diltiazem, and D 600 against K+ depolariza...

journal_title：Canadian journal of physiology and pharmacology

authors： Ruzycky AL,Crankshaw DJ,Triggle DJ

更新日期：1987-10-01 00:00:00

abstract：:A brief burst of electrical stimuli delivered to the vagus nerve during the cardiac cycle elicits a triphasic cardiac chronotropic response. The cardiac cycle length initially increases, then briefly decreases, and subsequently increases again. We studied the effects of a calcium channel blocking agent, verapamil, on ...

journal_title：Canadian journal of physiology and pharmacology

authors： Wallick DW,Stuesse SL,Valencic F,Fratianne RB

更新日期：1986-07-01 00:00:00

abstract：:Infarct-like lesion induced by isoprenaline is a well-known model to study myocardial infarction (MI). Vitamin D has been shown to have anti-inflammatory and antioxidant effects. Recent studies highlighted cross talk between vitamin D and peroxisome proliferator-activated receptor gamma (PPAR-γ). The present study was...

journal_title：Canadian journal of physiology and pharmacology

authors： El-Gohary OA,Allam MM

更新日期：2017-06-01 00:00:00

abstract：:The metabolic and body weight changes in two non-pregnant beef cows were studied during prolonged exposure to warm (20 +/- 3 degrees C, relative humidity 50-70%) and cold (-10 +/- 2 or -25 +/- 4 degrees C) temperatures. Other factors including daily food intake were held constant throughout each 8-week exposure. Durin...

journal_title：Canadian journal of physiology and pharmacology

authors： Young BA

更新日期：1975-10-01 00:00:00

abstract：:The vestibulo-ocular and vestibulo-collic reflexes are well-studied sensorimotor systems with dynamic properties that have been successfully modeled. Recently proposed matrix and tensorial models attempt to describe the spatial organization of these reflexes in three dimensions. Here we describe experiments that test ...

journal_title：Canadian journal of physiology and pharmacology

authors： Baker JF,Banovetz JM,Wickland CR

更新日期：1988-04-01 00:00:00