Abstract:
:Propofol (2,6-diisopropylphenol) is an anaesthetic agent with anti-oxidant properties. The aim of the present study was to determine whether propofol can protect pulmonary epithelial (A549) cells against lipopolysaccharide (LPS)-induced cell death and, if so, the mechanisms involved. The effects of LPS alone and in combination with propofol on A549 cell death were investigated. Cell viability was determined using the colourimetric 3-(4,5-dimethyl-2 thiazoyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay. Apoptotic A549 cells were detected by flow cytometry, as propidium iodide-negative and annexin-V-positive cells, and terminal deoxyribonucleotidyl transferase-mediated dUTP-digoxigenin nick end-labelling (TUNEL). Mitochondrial membrane potential (MMP), caspase 9 activity, Ca(2+) concentrations and reactive oxygen species (ROS) were analysed by immunofluorescent methods. Aconitase 2 (ACO2), microtubule-associated light chain 3 (LC3) and beclin-1 levels were evaluated using reverse transcription-polymerase chain reaction and/or western blot analysis. Exposure of A549 cells to 1-50 μg/mL LPS for 3-24 h resulted in the concentration- and time-dependent induction of cell death. Cell apoptosis accounted for approximately 77% of cell death induced by LPS. Propofol (5-150 μmol/L) concentration-dependently inhibited LPS-induced A549 cell death. This protective effect of propofol was accompanied by prevention of LPS-induced mitochondrial dysfunction (reductions in MMP, ACO2 expression and ATP) and was associated with the inhibition of LPS-induced activation of apoptotic signals (caspase 9 activity, ROS overproduction and Ca(2+) accumulation). In addition, propofol blocked LPS-induced overexpression of the autophagy-associated proteins LC3 and beclin-1. The data indicate that propofol protects A549 cells against LPS-induced apoptosis, and probably autophagy, by blocking LPS-induced activation of ROS/caspase 9 pathways and upregulation of LC3 and beclin-1, respectively.
journal_name
Clin Exp Pharmacol Physioljournal_title
Clinical and experimental pharmacology & physiologyauthors
Gu X,Lu Y,Chen J,He H,Li P,Yang T,Li L,Liu G,Chen Y,Zhang Ldoi
10.1111/j.1440-1681.2012.05694.xsubject
Has Abstractpub_date
2012-05-01 00:00:00pages
447-53issue
5eissn
0305-1870issn
1440-1681journal_volume
39pub_type
杂志文章abstract::1. Angiotensin (Ang) II plays a major role in vascular remodelling. Matrix metalloproteinases (MMPs) and their tissue inhibitors (TIMPs) are involved in the tissue remodelling processes. The aim of the present study was to investigate whether AngII modulates TIMP-2 expression in rat aortic smooth muscle cells in vivo....
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2007.04573.x
更新日期:2007-03-01 00:00:00
abstract::1. In coronary artery disease, the typical atheromatous plaque consists of a lipid core containing various inflammatory cells and a fibrous cap composed mostly of extracellular matrix. Both matrix metalloproteinases (MMPs) and inflammation are involved in the initiation of atherosclerotic plaques and plaque instabilit...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2007.04824.x
更新日期:2008-03-01 00:00:00
abstract::1. Acute myocardial infarction (AMI) is strongly associated with atherosclerosis, and is responsible for significant morbidity and mortality worldwide. The pathogenic mechanisms that underlie atherosclerosis and AMI are undefined at present. The calcium-sensing receptor (CaSR) is a member of the superfamily of G-prote...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2010.05345.x
更新日期:2010-03-01 00:00:00
abstract::1. Deviation supersensitivity and post-junctional supersensitivity are important determinants in the control of the response of smooth muscle. 2. Post-junctional supersensitivity is a process whereby effector cells have augmented responsiveness as a consequence of an impaired physiological stimulus. Deviation supersen...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/j.1440-1681.1989.tb01584.x
更新日期:1989-06-01 00:00:00
abstract::1. Nitric oxide (NO) is an important mediator of contractile function in the heart. However, isolated papillary muscle preparations appear to lack NO responsiveness in certain animal species. Although cat, guinea-pig and ferret models have been NO responsive, there have been mixed results in the rat papillary muscle. ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2005.04225.x
更新日期:2005-07-01 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::Ischaemia reperfusion (I/R) is associated with liver injury and impaired regeneration during partial hepatectomy (PH). The aim of this study was to investigate the effect of thymoquinone (TQ), the active compound of essential oil obtained from Nigella sativa seeds, on rat liver after PH. Male Wistar rats were divided ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.12961
更新日期:2018-05-07 00:00:00
abstract::The neuropeptide oxytocin (OXT) has been implicated in the pathophysiology of behavioural deficits among patients with autism spectrum disorder (ASD). However, the molecular mechanisms underlying its role in ASD remain unclear. In the present study, a murine model with ASD-like phenotypes was induced by intra-medial a...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.12378
更新日期:2015-05-01 00:00:00
abstract::1. The aim of the present study was to assess the bioequivalence of two cefadroxil products, namely Ultracef (a reference product) in the form of a 500 mg capsule (produced by Bristol-Myers Squibb Laboratories, Princeton, NJ, USA) and Roxil (a test product) in the form of a 500 mg capsule (produced by Tabuk Pharmaceut...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1111/j.1440-1681.2004.04012.x
更新日期:2004-07-01 00:00:00
abstract::1. Plasma concentration and atrial content of atrial natriuretic factor (ANF) were measured in rats with chronic renal failure induced by subtotal nephrectomy. 2. Plasma ANF was higher, and atrial ANF content lower in rats with renal failure when compared with sham-operated controls. 3. Plasma renin activity (PRA) and...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1987.tb00384.x
更新日期:1987-03-01 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. 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::1. The aim of the present study was to examine the effect of bacterial lipopolysaccharide (LPS) on the disposition of an organic anion transporting polypeptide and P-glycoprotein substrate in the rat isolated perfused liver. 2. Male Sprague-Dawley rats were divided into four groups. Three of the groups received 1, 2.5...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2006.04419.x
更新日期:2006-08-01 00:00:00
abstract::1. Oxidative stress (OS) is a biological entity indicated as being responsible for several pathologies, including diabetes. Diabetes can also be associated with human cirrhosis. Portal hypertension (PH), a major syndrome in cirrhosis, produces hyperdynamic splanchnic circulation and hyperaemia. The present study was d...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2004.03963.x
更新日期:2004-03-01 00:00:00
abstract::1. Taurine and homocysteine are metabolites of methionine. Hyperhomocysteinaemia is one of the risk factors for cardiovascular disease. Although taurine may be a cardiovascular cytoprotective substance, we hypothesized that it may antagonize the effects of homocysteine on myocardial mitochondrial function. 2. We studi...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2004.03983.x
更新日期:2004-04-01 00:00:00
abstract::1. The neurotrophins play an important role during development to stimulate and guide axonal growth for the establishment of a correctly wired and functional neural system. Neurotrophins can also regulate adult nervous system plasticity by promoting neuronal survival and stimulating nerve regrowth following injury. 2....
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1046/j.1440-1681.2003.03909.x
更新日期:2003-10-01 00:00:00
abstract::This study describes the pharmacodynamic interaction between propofol and remifentanil. Sixty patients who were scheduled for elective surgery under general anaesthesia (30 males/30 females) were enrolled. Patients were randomly allocated to receive one of 15 combinations of drug levels. Baseline electroencephalograms...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,随机对照试验
doi:10.1111/1440-1681.12677
更新日期:2017-01-01 00:00:00
abstract::1. Oxidative stress is believed to be an important mediator of neuronal cell death but the precise mechanism by which this occurs is unknown. 2. We have developed an in vitro model of neuronal oxidative stress to study the pathways by which free radicals kill neurones. 3. We have shown that oxidative stress, cystine d...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/j.1440-1681.1995.tb02006.x
更新日期:1995-04-01 00:00:00
abstract::1. Alpha-terpineol is a monoterpene found in the essential oils of several aromatic plant species. In the present study, we investigated the mechanisms underlying the cardiovascular changes induced by alpha-terpineol in rats. 2. In normotensive rats, administration of alpha-terpineol (1, 5, 10, 20 and 30 mg/kg, i.v.) ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2010.05383.x
更新日期:2010-08-01 00:00:00
abstract::Recent in vitro experiments have indicated that human resistin increases the number of lipoprotein particles secreted by the human hepatocytes and also influences their quality, in terms of generating more proatherogenic lipid particles. The aim of this study is to investigate associations of plasma resistin and perip...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.12503
更新日期:2016-01-01 00:00:00
abstract::1. The effect of propofol on cardiac whole-cell sodium currents and single sodium channels in rat isolated ventricular myocytes was examined using patch-clamp techniques. 2. Propofol caused a block of the whole-cell sodium current, the potency of block depending on the holding potential. When cells were held at -90 mV...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1998.tb02360.x
更新日期:1998-05-01 00:00:00
abstract::1. The effects of dietary sodium on blood pressure and levels of sodium, other electrolytes and noradrenaline (NA) in the cerebrospinal fluid (CSF) and blood of 15 patients with essential hypertension were studied. The CSF and blood sampling was carried out after 7 days of a high salt intake (16-18 g/day) and after 7 ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1992.tb00444.x
更新日期:1992-04-01 00:00:00
abstract::In guinea-pig isolated atria, angiotensin I and angiotensin II produced concentration dependent increases in the rate of spontaneous beating and in the release of noradrenaline produced by field stimulation of sympathetic nerves. In rat isolated caudal artery preparations, both angiotensin I and angiotensin II had dir...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1984.tb00290.x
更新日期:1984-07-01 00:00:00
abstract::The effects of the calcium antagonists verapamil and nifedipine on mean arterial blood pressure, heart rate and pressor responses to a range of alpha-adrenoceptor agonists were examined in male normotensive New Zealand white rabbits and in rabbits with perinephritis hypertension. Verapamil and nifedipine caused a grea...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1987.tb00960.x
更新日期:1987-02-01 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. A method is described which allows the determination of liquid junction potentials between biological fluid samples of less than 1 nL with a reproducibility of 10%. This was achieved by use of a micro-method and the use of 3% agarose added to the electrolyte in the measuring electrodes. 2. Validation was performed ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1989.tb01605.x
更新日期:1989-07-01 00:00:00
abstract::1. Interactions between autacoids may play important roles in the regulation of blood flow in the foetal placenta. In order to investigate this aspect of placental haemodynamics, human normal-term placentae were perfused in vitro and the responses of the foetal vessels to various combinations of vasoactive agents were...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1998.tb02280.x
更新日期:1998-09-01 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::1. Rats fed high dietary fructose are documented to form an acquired model of insulin resistance. The present study measured the effects of administration of L-carnitine (CA) on lens protein glycation, oxidative stress and redox homeostasis in rats fed a high-fructose diet. 2. Animals were divided into four groups: (i...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2007.04815.x
更新日期:2008-02-01 00:00:00
abstract::The aim of the present study was to determine the effects of increased cAMP levels in response to pituitary adenylate cyclase-activating polypeptide 27 (PACAP27) on atrial atrial natriuretic peptide (ANP) secretion in rabbit atria. A perfused beating atrial model was used in the present study and cAMP efflux and ANP l...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2008.04996.x
更新日期:2008-10-01 00:00:00