Abstract:
:1. By selectively modifying adenosine metabolism via adenosine deaminase or adenosine kinase inhibitors, it may be possible to enhance the receptor-mediated protective actions of adenosine in a site- and event-specific fashion. 2. We characterized cardioprotective actions of the adenosine deaminase inhibitor erythro-2-(2-hydroxy-3-non-yl)adenine (EHNA) and the adenosine kinase inhibitor iodotubercidin in C57/Bl6 mouse hearts subjected to 20 min global normothermic ischaemia and 40 min reperfusion. 3. Ventricular pressure development only recovered to 45 +/- 2% of baseline levels (67 +/- 5 mmHg) in untreated hearts, with sustained and pronounced diastolic contracture (25 +/- 2 mmHg). Treatment with 20 micromol/L EHNA increased recovery of ventricular pressure (107 +/- 9 mmHg), reduced postischaemic diastolic pressure (13 +/- 1 mmHg) and reduced loss of lactate dehydrogenase (LDH; an indicator of necrotic damage) by 50% (9 +/- 2 vs 19 +/- 2 IU/g). Adenosine kinase inhibition with 10 micromol/L iodotubercidin also improved pressure development (to 100 +/- 8 mmHg) and reduced LDH efflux (5 +/- 2 IU/g). 4. Protective actions were mimicked by adenosine and inhibited by adenosine receptor antagonism (50 micromol/L 8-rho-sulfophenyltheophylline) and mitochondrial K(ATP) channel inhibition (50 micromol/L 5-hydroxydecanoate). 5. Coinfusion of the inhibitors, 'trapping' formed adenosine, failed to exert protection and, in some instances, was detrimental. Although substantial benefit was gained by these agents in hearts from young animals, neither inhibitor was effective in 'aged' hearts (18 months). 6. Our data demonstrate that adenosine deaminase or kinase inhibition substantially limits injury during ischaemia-reperfusion. Protection involves adenosine receptor activation. However, cardioprotection via either enzyme inhibitor requires an alternative purine-salvage pathway to be functional and was reduced in aged hearts known to be increasingly susceptible to ischaemic damage.
journal_name
Clin Exp Pharmacol Physioljournal_title
Clinical and experimental pharmacology & physiologyauthors
Willems L,Headrick JPdoi
10.1111/j.1440-1681.2005.04168.xkeywords:
subject
Has Abstractpub_date
2005-03-01 00:00:00pages
179-83issue
3eissn
0305-1870issn
1440-1681pii
CEP4168journal_volume
32pub_type
杂志文章abstract::Direct evidence is limited for the association between heart rate variability (HRV) indices and ventricular tachyarrhythmias (VTAs). While galectin-3 (Gal-3) is regarded as a causal factor for cardiac remodelling and a biomarker for arrhythmias, its regulation on VTAs and HVR is unknown. Using aged transgenic (TG) mic...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.13275
更新日期:2020-07-01 00:00:00
abstract::1. The role of cardiac reflexes in baroreflex control mechanisms and the changes that occur in chronic hypertension is reviewed. The rapid resetting properties of the arterial baroreceptors ensures its role in short-term rather than long-term control of blood pressure. 2. In hypertensive humans and animals, the barore...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/j.1440-1681.1994.tb02448.x
更新日期:1994-10-01 00:00:00
abstract::1. DOCA and 9 alpha-fludrocortisone were given to mice on a high-sodium diet for periods of up to 20 weeks, resulting in decreases in plasma renin concentration, renal renin concentration and renal renin mRNA with both treatments. 2. Plasma renin concentration was suppressed prior to suppression of renin mRNA and rena...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1989.tb01614.x
更新日期:1989-08-01 00:00:00
abstract::Post-traumatic stress disorder (PTSD) has become a major disease that threatens human health. Neurotransmitters and the amygdala are found to be critical in the development and maintenance of PTSD. We aim to investigate the role of glycyrrhizin in treating PTSD. Contextual fear extinction and elevated plus maze test w...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.13173
更新日期:2020-01-01 00:00:00
abstract::1. Neutrophil function was studied in 10 males presenting with acute myocardial infarction (MI) within 6 h of onset and in 10 normal males. Neutrophil production of platelet-activating factor (PAF), determined by bioassay, that of leukotriene B4 by HPLC, and the activity of an enzyme involved in the synthesis of PAF, ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1995.tb01963.x
更新日期:1995-02-01 00:00:00
abstract::1. Insulin-like growth factor (IGF)-I has acute effects on cardiovascular function, including a well-characterized vasodilator response in isolated arteries. In addition to increasing the release of nitric oxide, IGF-I also has effects on a variety of other signalling pathways that affect vascular tone, in particular ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2006.04510.x
更新日期:2006-12-01 00:00:00
abstract::Vancomycin is an antibiotic used in the treatment of infections caused by multidrug-resistant Gram-positive bacteria, especially methicillin-resistant Staphylococcus aureus. In the last decades, vancomycin has been widely used in hospital environments due to the increasing incidence of sepsis and septic shock. Sepsis ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/1440-1681.13066
更新日期:2019-04-01 00:00:00
abstract::1. This study investigated the effect of atrial natriuretic peptide on renin release from the kidney. The in vitro direct effect was examined in the animal experiment using renal cortical slices of rat, and the in vivo effect was observed in the human infusion study. 2. In the in vitro experiments, alpha-human atrial ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1992.tb00408.x
更新日期:1992-10-01 00:00:00
abstract::1. The present report documents evidence suggesting that endothelin (ET) is a mediator and modulator of post-ganglionic sympathetic neuronal development. 2. Endothelin is produced by post-ganglionic neurons and by cells adjacent to these neurons. 3. Post-ganglionic sympathetic neurons express functional receptors for ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1046/j.1440-1681.1999.03179.x
更新日期:1999-12-01 00:00:00
abstract::Diets rich in saturated fats and cholesterol contribute to the incidence of hyperlipidaemia. An altered lipid profile is a major factor responsible for the development of CVD. Male Wistar rats were fed with a high-fat diet (HFD) (suspension (w/v) of 0.5% cholesterol, 3% coconut oil and 0.25% cholic acid for 30 days) t...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.13221
更新日期:2020-04-01 00:00:00
abstract::1. Renin gene expression was investigated in kidneys from 13 foetal and four adult sheep. 2. The levels of renal renin mRNA in foetuses were greater than those in adult sheep (P < 0.001). 3. There was no significant difference in renin mRNA levels between foetuses aged 91 and 134 days (term 150 days). 4. The levels of...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1996.tb01758.x
更新日期:1996-08-01 00:00:00
abstract::1. The influence of the intact kidney on blood pressure, extracellular fluid volume (ECF, ferrocyanide space) and ECF volume distribution was studied in rats 60 days after constriction of the contralateral renal artery. 2. Renal artery constriction increased both blood pressure and ECF levels. The rise of both variabl...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1979.tb00033.x
更新日期:1979-09-01 00:00:00
abstract::1. The ulcerogenesis of gastric haemorrhagic damage during sepsis is unclear. The present study first proposes that gastric haemorrhagic ulcer is modulated by mucosal glutathione, histamine and oxyradicals in lipopolysaccharide (LPS)-induced sepsis in rats. The protective effects of several drugs on the ulcerogenic pa...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1046/j.1440-1681.2000.03241.x
更新日期:2000-04-01 00:00:00
abstract::Cholangiocarcinoma (CCA) is a progressively fatal form of cancer originating from the malignant transformation of hepatic biliary cholangiocytes. The present study reports for the first time in vitro growth inhibitory activities of β-eudesmol, the bioactive sesquiterpenoid present in the rhizome of Atractylodes lancea...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.12818
更新日期:2017-11-01 00:00:00
abstract::This study investigates the effect of chronic consumption of a high-fat diet rich in corn oil (CO-HFD) on atrial cells ultrastructure, antioxidant levels and markers of intrinsic cell death of both control and type 1 diabetes mellitus (T1DM)-induced rats. Adult male rats (10 rats/group) were divided into four groups: ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.13158
更新日期:2019-12-01 00:00:00
abstract::1. In rat isolated tail arteries and atria in which transmitter stores are labelled with (3H)-noradrenaline, isoprenaline in low concentrations facilitates the stimulation-induced efflux of tritium. 2. This effect is dependent on the frequency and duration of electrical stimulation, being observed only at low frequenc...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1980.tb00114.x
更新日期:1980-09-01 00:00:00
abstract::Although 7,8-dihydroxyflavone (7,8-DHF), a synthetic agonist specific for tyrosine kinase receptor B (TrkB), has been reported to promote intestinal dynamics, its effect on gastric dynamics has not been studied as yet. In this study, we explored how 7,8-DHF affected the carbachol (CCh)-induced contraction of rat gastr...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.12999
更新日期:2018-11-01 00:00:00
abstract::Cardiotoxin (CTX) III, a basic polypeptide with 60 amino acid residues isolated from Naja naja atra venom, has been reported to have anticancer activity. In the present study, we investigated the mechanisms underlying the anticancer activity of CTX III in human leukaemia (HL-60 cells). Cardiotoxin III activated the en...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2008.04968.x
更新日期:2008-09-01 00:00:00
abstract::1. The therapeutic effect of green tea extract (GTE) on the aortic collagen content and its characteristics were investigated in streptozotocin diabetic rats. 2. Diabetes was induced in rats by a single intra peritoneal injection of streptozotocin (60 mg/kg bodyweight). Six weeks after diabetes induction, GTE was admi...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2006.04374.x
更新日期:2006-04-01 00:00:00
abstract::1. Nitric oxide (NO), or peroxynitrite, is known to inhibit haemoproteins, including cytochrome P450 mono-oxygenases. The present study explores the functional correlates of the inhibition by NO of renal epoxygenase on the vascular responses to arachidonic acid (AA) in the perfused kidney. 2. Control kidneys produce m...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1046/j.1440-1681.2002.03762.x
更新日期:2002-11-01 00:00:00
abstract::1. Na+/H+ exchange, an ethylisopropylamiloride (EIPA)-sensitive Na+ and HCO3- dependent system and a diisothio-cyanatostilbenedisulphonic acid (DIDS)-sensitive Na+ and HCO3- transporter, contribute to sodium influx and intracellular pH (pHi) regulation in vascular smooth muscle. 2. In cultured cells from the human int...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/j.1440-1681.1991.tb01419.x
更新日期:1991-02-01 00:00:00
abstract::1. Although it is well established that hypertension is the main risk factor for stroke, the complexity of cerebrovascular problems related to hypertension is not generally appreciated. 2. Hypertension can cause stroke through many mechanisms. A high intraluminal pressure will lead to extensive alteration in endotheli...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1046/j.1440-1681.1999.03081.x
更新日期:1999-07-01 00:00:00
abstract::1. In the present study, we used a low dose of propofol (5 mg/kg per h) to investigate its effects on the pro-inflammatory cytokines (tumour necrosis factor (TNF)-alpha, interleukin (IL)-1beta and IL-10) and changes in nitric oxide (NO) following lipopolysaccharide (LPS) for a period of 12 h in conscious rats. 2. Expe...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2005.04155.x
更新日期:2005-01-01 00:00:00
abstract::1. Tissue plasminogen activator (tPA) has both fibrinolytic and anti-inflammatory activity. These properties may be useful in treating inflammatory lung diseases, such as acute respiratory distress syndrome (ARDS). 2. We have previously demonstrated the feasibility of targeted pulmonary delivery of tPA. As part of our...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2008.05011.x
更新日期:2008-12-01 00:00:00
abstract::1. Treatment with heparin has beneficial effects in diabetic nephropathy. The occurrence of increased urinary albumin excretion in diabetic patients reflects general vascular dysfunction, including increased transcapillary permeability of macromolecules. The aim of the present study was to evaluate the effects of hepa...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1046/j.1440-1681.1999.03050.x
更新日期:1999-05-01 00:00:00
abstract::Autophagy promotes cell survival or induces apoptosis in cancer cells. While SIRT1 and AMPK induce autophagy in both normal and cancer cells, Akt and mTOR can inhibit it. Calycosin, a methoxyisoflavone, protects against several types of solid tumours including colorectal cancer. However, the mechanisms behind the anti...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.13133
更新日期:2019-10-01 00:00:00
abstract::In the present study, we investigated the relationship between the docosahexaenoic acid (DHA)-induced protection of learning deficit of amyloid beta(1-40)-infused Alzheimer's disease (AD) model rats and changes in synaptosomal plasma membrane fluidity of the cerebral cortex. Synaptosomal membrane lateral and rotationa...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2006.04467.x
更新日期:2006-10-01 00:00:00
abstract::1. There are hundreds of commercially available microcomputer statistics packages, ranging from the very cheap and elementary to the very expensive and complex, and from the very general to the very specialized. This review covers only those that appear to be popular with biomedical investigators who deal with fairly ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1995.tb02335.x
更新日期:1995-12-01 00:00:00
abstract::1. Plasma concentrations of prorenin were determined in a transgenic animal model of nephropathy induced by overexpression of transforming growth factor (TGF)-beta1 in the juxtaglomerular apparatus. 2. In both female and male mice, plasma concentrations of prorenin were higher in transgenic than in non-transgenic anim...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1046/j.1440-1681.2000.03330.x
更新日期:2000-09-01 00:00:00
abstract::Acute kidney injury (AKI) occurs in 5% of hospitalized patients and in 50% of sepsis patients with acute renal dysfunction. However, there have been no safe and effective therapeutic strategies. The hypoxia condition is closely related to renal injury and function under AKI. As hypoxia-inducible factor 1α (HIF-1α) is ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.12947
更新日期:2018-10-01 00:00:00