Abstract:
:1. The aim of this study was to assess the vagal and sympathetic nerve contribution to the relationship between mean arterial pressure (MAP) and heart rate (HR) at 6, 9, 14 and 20 weeks of age in conscious Wistar-Kyoto (WKY) and spontaneously hypertensive rats (SHR) with methoxamine- and nitroprusside-induced steady-state changes in blood pressure. 2. MAP increased with age in both strains but was 17-23% higher in SHR. 3. By contrast baroreflex parameters (HR range: difference between upper and lower HR plateaus, and gain: average slope between inflection points of the logistic MAP-HR relationship) decreased with age in SHR but increased in WKY. 4. After methylatropine, no differences in the cardiac sympathetic baroreflex range or gain parameters were observed between strains or ages. 5. It was concluded that older SHR have normal sympathetic but reduced vagal capacity to control HR in response to changes in MAP, but that this deficit was not dependent on the absolute level of blood pressure. 6. Because the differences were confined to one effector, SHR may have different central rather than arterial baroreceptor afferent mechanisms.
journal_name
Clin Exp Pharmacol Physioljournal_title
Clinical and experimental pharmacology & physiologyauthors
Head GA,Adams MAdoi
10.1111/j.1440-1681.1988.tb01075.xsubject
Has Abstractpub_date
1988-04-01 00:00:00pages
289-92issue
4eissn
0305-1870issn
1440-1681journal_volume
15pub_type
杂志文章abstract::1. mu-Opioid receptor agonists mediate their central analgesic effects by actions on neurons within brain regions such as the mid-brain periaqueductal grey (PAG). Within the PAG, mu-opioid receptor-mediated analgesia results from inhibition of GABAergic influences on output projection neurons. We have established that...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1046/j.1440-1681.2000.03291.x
更新日期:2000-07-01 00:00:00
abstract::Peptidyl-prolyl cis/trans isomerases (PPIases) are a conserved group of enzymes that catalyse the conversion between cis and trans conformations of proline imidic peptide bonds. These enzymes play critical roles in regulatory mechanisms of cellular function and pathophysiology of disease. There are three different cla...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/1440-1681.12335
更新日期:2015-02-01 00:00:00
abstract::The prostaglandin synthesis inhibitor diclofenac sodium has been compared with a placebo in the treatment of primary nocturnal enuresis in a double-blind crossover trial. Twenty patients were entered: 14 female, six male; age range 6-17 years. The results showed that diclofenac sodium was significantly more effective ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 临床试验,杂志文章
doi:10.1111/j.1440-1681.1986.tb00327.x
更新日期:1986-02-01 00:00:00
abstract::1. Rabbits were treated with the antiparasitic drug ivermectin at subcutaneous doses of 0.2, 1 and 2.5 mg/kg and blood collected weekly for 4 weeks thereafter for measuring some blood parameters. At a dose of 0.2 or 1 mg/kg the drug had no significant effect on any of the parameters measured. At a dose of 2.5 mg/kg, t...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1990.tb01273.x
更新日期:1990-10-01 00:00:00
abstract::1. Medullary blood flow (MBF) is important in the long-term control of arterial pressure. However, it is unclear which vascular elements regulate MBF. 2. Exogenous endothelin (ET)-1 decreases cortical more than medullary blood flow. We hypothesized that ET-1 would therefore constrict afferent (AA) and efferent arterio...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2004.04036.x
更新日期:2004-08-01 00:00:00
abstract::1. There has been considerable recent interest in the possibility that increased intake of dietary anti-oxidants may protect against cardiovascular disease. This is partly due to the knowledge that oxidative events in vivo may play a role in the pathogenesis of atherosclerosis. 2. While dietary anti-oxidants, such as ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1046/j.1440-1681.2000.03214.x
更新日期:2000-03-01 00:00:00
abstract::Members of the transient receptor potential (TRP) channel superfamily are present in vascular smooth muscle cells and play important roles in the regulation of vascular contractility. The TRPC3 and TRPC6 channels are activated by stimulation of several excitatory receptors in vascular smooth muscle cells. Activation o...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/j.1440-1681.2007.04855.x
更新日期:2008-09-01 00:00:00
abstract::1. The effects of diphenylene iodonium (DPI), an inhibitor of reduced nicotinamide adenine dinucleotide phosphate-dependent oxidases (which generate superoxide anions), were studied on nitric oxide (NO)-mediated responses in isolated preparations of the rat aorta and anococcygeus muscle. 2. In aortic rings, the endoth...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1993.tb01661.x
更新日期:1993-03-01 00:00:00
abstract::Cerebral blood flow (CBF) and cerebral O2 metabolism (CMRO2) changes were measured in these studies during treatment with three reputed cerebral vasodilators: bradykinin, adenosine triphosphate (ATP) and increased arterial PCO2. Intracerebrovascular bradykinin infusions increased CMRO2 and CBF to a similar degree. Int...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1983.tb00177.x
更新日期:1983-03-01 00:00:00
abstract::1. Raised intracranial pressure (ICP) is a major factor associated with morbidity and mortality in patients with severe head injury. Identifying the mechanisms responsible for raised ICP may be difficult and, as a result, treatment prescribed may be non-specific and often ineffective. 2. Research aimed at obtaining mo...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/j.1440-1681.1998.tb02350.x
更新日期:1998-11-01 00:00:00
abstract::1. The low molecular weight heparin (LMWH) dalteparin is used, for example, to prevent primary venous thromboembolism in patients undergoing surgery or in medically ill patients. The anticoagulant activity of dalteparin can be monitored by measuring anti-factor Xa levels and activated partial thromboplastin time (aPTT...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2011.05593.x
更新日期:2011-11-01 00:00:00
abstract::1. Pre- and postjunctional effects of endothelin (1-10 nmol/L) have been studied in the rabbit isolated ear artery and in rat isolated atria. 2. Endothelin produced concentration-dependent increases in arterial perfusion pressure, and had positive chronotropic and inotropic effects in rat atria. 3. Vasoconstrictor res...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1989.tb01548.x
更新日期:1989-04-01 00:00:00
abstract::Non-cystic fibrosis (non-CF) bronchiectasis is a chronic pulmonary disease that can lead to malnutrition. Serum prealbumin and albumin level are related to inflammatory and nutritional status. Thus, we aimed to confirm our hypothesis that low serum albumin and prealbumin level, as well as body mass index (BMI), is cor...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.13331
更新日期:2020-09-01 00:00:00
abstract::Pathogenic inflammation mediated by overactive type 1 helper T cell (Th1) responses could exacerbate and perpetuate Crohn's disease. Programmed death (PD)-1 and its ligand PD-L1 pathway could be upregulated to suppress inflammation. We wondered why this pathway is ineffective at suppressing pathogenic Th1 inflammation...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.13127
更新日期:2019-09-01 00:00:00
abstract::1. The effects of the alpha-beta-adrenergic antagonist labetalol on the activation of human platelets by adrenaline and other aggregating stimuli have been investigated. 2. Labetalol inhibited platelet aggregation and secretion induced by collagen and the second phase of aggregation caused by ADP, platelet activating ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1988.tb01099.x
更新日期:1988-06-01 00:00:00
abstract::Severe drug eruption (SDE), a common skin disease, becomes dangerous when it occurs in patients with human immunodeficiency virus (HIV). However, the molecular mechanisms are poorly understood. Forty patients including HIV+ SDE+ (n = 15), HIV- SDE+ (n = 15) and HIV+ SDE- (n = 10) subjects were enrolled in our study. A...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.13266
更新日期:2020-06-01 00:00:00
abstract::There is a strong genetic predisposition towards abdominal aortic aneurysm (AAA), but it is unknown whether persons without AAA but with first-degree relatives who are AAA patients have a generalized dilating diathesis, defect arterial wall mechanics, or increased cardiovascular risk. The aim of the study was to inves...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.12395
更新日期:2015-06-01 00:00:00
abstract::1. Mechanisms involved in the plasma extravasation observed following thermal injury of rat dorsal skin were investigated. 2. Heat applied to the dorsal skin of anaesthetized rats by a temperature-controlled skin heater (1 cm diameter) for 5 min induced temperature-dependent plasma protein extravasation at 48-48.5 deg...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1997.tb02705.x
更新日期:1997-11-01 00:00:00
abstract::1. We have studied the role of kallikrein (KK) in the maintenance of renal function in chronic hypoxic rats (high altitude; HA), compared with control rats kept at sea level (SL). Hypoxia was induced by placing female Wistar rats (198-290 g) in an altitude chamber (5500 m) 15 h/day for 4 weeks. Experiments were also c...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1996.tb01186.x
更新日期:1996-09-01 00:00:00
abstract::Hyperglycaemia-induced neurotoxicity involved in the pathogenesis of diabetic encephalopathy and neuronal senescence is one of the worst effects of hyperglyceamic neurotoxicity. Cannabinoid receptor type 1 (CB1) has neuroprotective function in a series of neuropathy. Spermidine (Spd) has anti-aging function in many ti...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.12955
更新日期:2018-08-01 00:00:00
abstract::1. The role of arginine vasopressin (AVP) was examined in adrenocorticotrophin (ACTH)-induced hypertension in Sprague-Dawley rats using the non-peptide AVP V1a receptor antagonist OPC 21268. 2. In an acute study, six rats were pretreated with ACTH for 11 days and direct arterial blood pressure (4 h), plasma osmolality...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1046/j.1440-1681.2000.03350.x
更新日期:2000-11-01 00:00:00
abstract::1. Infusion of salbutamol (3.0 microgram/min after a bolus injection of 100 microgram) produced hypokalaemia in conscious dogs. 2. Measurement of arterial and coronary sinus potassium differences revealed no significant potassium loss from the heart with established hypokalaemia. 3. Shortly after the initial salbutamo...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1978.tb00717.x
更新日期:1978-11-01 00:00:00
abstract:OBJECTIVE:Diabetes mellitus is a prevalent endocrine disorder worldwide. Citrulline is an α-amino acid, which is abundant in watermelon, and a precursor of arginine and nitric oxide. Decreased bioavailability of nitric oxide is associated with insulin resistance. The present systematic review focused on the existing ev...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/1440-1681.13190
更新日期:2020-02-01 00:00:00
abstract::Mutations of αB-crystallin (CryαB), a small heat shock protein abundantly expressed in cardiac and skeletal muscles, are known to cause desmin-related myopathies. The CryαB R120G allele has been linked to a familial desminopathy and, in transgenic mice, causes a sudden death at about 28 weeks of age. To investigate th...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.12253
更新日期:2014-08-01 00:00:00
abstract::Radiation-induced lung injury (RILI) is a serious complication in thoracic tumour radiotherapy. It often occurs in clinical chest radiotherapy and acute whole-body irradiation (WBI) caused by nuclear accidents or nuclear weapon attack. Some radioprotective agents have been reported to exert protective effects when giv...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.13135
更新日期:2019-12-01 00:00:00
abstract::1. Angiotensin (Ang) II causes growth-related effects on vascular smooth muscle cells in vitro and in vivo. 2. Chronic infusions of AngII systemically, at doses that are initially subpressor, result in slowly progressive increases in arterial pressure ('slow-pressor' hypertension). It has been suggested that the hyper...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1046/j.1440-1681.2001.03590.x
更新日期:2001-12-01 00:00:00
abstract::1. Oxygen (O2) transfer from the blood to tissues is a function of the red blood cell (RBC) O2 saturation (SO2), the plasma O2 content being negligible. Under conditions of increased tissue O2 demand, the SO2 of arterial blood does not change appreciably (97%); however, the SO2 of mixed venous blood, equal to that of ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1046/j.1440-1681.2000.03383.x
更新日期:2000-12-01 00:00:00
abstract::This in vivo study tested the hypothesis that the modulation of acetylcholine (ACh) release by the M1 muscarinic receptor (mAChR) in the neuromuscular junction of disused muscles may affect the tensions of the muscles during the neuromuscular monitoring of a rocuronium-induced neuromuscular block and compared the resu...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.13012
更新日期:2018-12-01 00:00:00
abstract::1. Patients with chronic kidney disease (CKD) demonstrate a high burden of vascular disease. This vascular disease is unusual by way of a preponderance of medial calcification. Further, traditional cardiovascular risk factors fail to fully explain the high cardiovascular event rate in this population. 2. The present r...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/j.1440-1681.2007.04660.x
更新日期:2007-07-01 00:00:00
abstract::1. The aim of the present study was to investigate the effects of hypoxia on energy metabolism and contraction of rat urinary bladder smooth muscle, thereby gaining insight into the capacity of this smooth muscle to maintain contractile function when rendered hypoxic. 2. Isometric force, oxygen consumption, lactate pr...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1046/j.1440-1681.2003.03882.x
更新日期:2003-08-01 00:00:00