Abstract：
:Increased phasic activity in the bladder smooth muscle of animal models and patients with detrusor overactivity has been suggested to underlie the pathophysiology of overactive bladder. Potassium (K+) channels are key regulators of bladder smooth muscle tone and thus may play a role in this altered phasic activity. In this study the effects of K+ channel modulators on the phasic activity of bladder strips from the streptozotocin-induced diabetic rat model of bladder dysfunction were investigated. Bladder strips from rats 1 week following streptozotocin administration and age-matched controls were mounted in tissue baths at 37 °C and the effects of K+ channel modulators on resting basal tension or phasic activity induced by a low concentration of carbachol (0.5 μM) were investigated. Activation of BKCa channels by NS1619 had a minor inhibitory effect on carbachol-induced phasic activity of bladder strips from control and diabetic rats, and significantly inhibited amplitude only at 30 μM. Activation of KATP channels by cromakalim inhibited the frequency of carbachol-induced phasic activity of bladder strips, although strips from diabetic rats showed a trend towards being less sensitive to cromakalim. The BKCa channel blocker iberiotoxin was able to induce phasic activity in resting tissues, with diabetic bladder strips demonstrating significantly enhanced phasic activity compared to controls. In contrast, inhibition of SKCa and KATP channels did not induce phasic activity in resting tissues. In conclusion, responses of diabetic rat bladder to BKCa and KATP channel modulators are altered, suggesting altered function and/or expression of channels which may contribute to bladder dysfunction in this model.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Vahabi B,Lawson K,McKay NG,Sellers DJdoi
10.1016/j.ejphar.2011.03.053subject
Has Abstractpub_date
2011-06-25 00:00:00pages
431-7issue
2-3eissn
0014-2999issn
1879-0712pii
S0014-2999(11)00371-2journal_volume
660pub_type
杂志文章abstract：:The cardiovascular and biochemical responses during acute oxidative stress induced by D,L-buthionine-(S,R)-sulfoximine (BSO) were investigated in Sprague-Dawley rats. Mean arterial pressure, heart rate and vascular reactivity were measured after subcutaneous injection of BSO (4 mmol/kg). Control rats received saline. ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(02)02500-1
更新日期：2002-11-15 00:00:00
abstract：:Our previous studies demonstrated the ability of exogenous agmatine to inhibit tolerance to and physical dependence on morphine in mice, rats and monkeys. The present study further evaluated the effect of agmatine on the psychological dependence induced by morphine in conditioned place preference assay. Agmatine (0.75...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2005.03.045
更新日期：2005-05-16 00:00:00
abstract：:The alpha1-adrenoceptor subtypes of rat prostate were characterized in binding and functional experiments. In binding experiments, [3H]tamsulosin bound to a single class of binding sites with an affinity (pKD) of 10.79+/-0.04 and Bmax of 87+/-2 fmol mg(-1) protein. This binding was inhibited by prazosin, 2-(2,6-dimeth...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(98)00895-4
更新日期：1999-01-29 00:00:00
abstract：:Perfusion of the 1S,3R isomer of trans-aminocyclopentane-1,3-dicarboxylic acid (t-ACPD, 50 microM), or arachidonic acid (10 microM), for 5 min produced only depression of the field excitatory postsynaptic potential recorded in the CA1 region of rat hippocampal slices from which the CA3 region had been removed. However...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(93)90919-9
更新日期：1993-08-24 00:00:00
abstract：:Exposure to cold (4 degrees C) of catheterized rats acclimated to 20 degrees C resulted in a progressive increase in plasma noradrenaline (NA) concentrations which reached values consistently more than twice the basal ones (20 degrees C) by about 30 min. No further increase in plasma NA levels were detected when the c...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(81)90478-7
更新日期：1981-01-29 00:00:00
abstract：:Influenza is a major disease in humans. The reemergence of avian influenza A viruses has indicated that hyperinflammatory responses are closely related to the severity of disease. Influenza virus infection induces nuclear transcription factor kappaB (NF-kappaB) activation. NF-kappaB and NF-kappaB-dependent gene produc...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2006.03.073
更新日期：2006-07-17 00:00:00
abstract：:We evaluated the inotropic actions of levosimendan and epinephrine, both singly and in combination, under isohydric (pH 7.4) and acidotic (pH 7.0) conditions in isolated guinea-pig hearts. Acidosis depressed contractility and myocardial relaxation by 25-30%, and both inotropes were less efficacious at pH 7.0, while th...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2004.11.049
更新日期：2005-01-10 00:00:00
abstract：:Glutamine is the most abundant amino acid in the bloodstream. It is important in nucleotide synthesis, is anti-catabolic, has anti-oxidant properties via metabolism to glutathione, may enhance immune responsiveness and possesses immunoregulatory functions. Moreover, it reduces atrophy of intestinal mucosa in animals o...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2011.02.008
更新日期：2011-05-01 00:00:00
abstract：:Sulfonylurea drugs exert their insulinotropic action by inhibiting ATP-sensitive potassium channels in the pancreas. However, these channels are also expressed in myocardial and vascular smooth muscle, implicating possible detrimental cardiovascular effects. Aim of the present study was to investigate the inhibitory p...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2012.02.006
更新日期：2012-04-15 00:00:00
abstract：:MK-801 (a potent non-competitive antagonist of N-methyl-D-aspartic acid-mediated events) in subcutaneous doses of 0.1 and 0.2 mg/kg increased the threshold for electroconvulsions and in doses of 0.0031 and 0.0125 mg/kg enhanced the protective activity of valproate against maximal electroshock-induced convulsions in mi...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(91)90582-b
更新日期：1991-08-06 00:00:00
abstract：:The mechanisms underlying the capsaicin-induced relaxation of the acetylcholine- as well as KCl-contraction were studied by measuring isometric force and phosphorylation of 20-kDa regulatory light chain subunit of myosin (MLC(20)) in ileal longitudinal smooth muscles of rats. Capsaicin relaxed acetylcholine- and KCl-s...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2004.01.014
更新日期：2004-03-08 00:00:00
abstract：:We examined whether the proteinase-activated receptor-2 (PAR2) agonist, H-Ser-Leu-Ile-Gly-Arg-Leu-NH2 (SLIGRL-NH2), could induce scratching behavior in mice. Intradermal injections of SLIGRL-NH2 (10-50 microg) evoked dose dependent scratching. This behavior peaked near 5 min and returned to preinjection levels within ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2005.11.012
更新日期：2006-01-20 00:00:00
abstract：:Adjuvant-induced arthritis is associated with body weight loss and decreased pituitary growth hormone (GH) and hepatic insulin-like growth factor-I (IGF-I) synthesis. Cytokines as tumor necrosis factor (TNF) mediate wasting associated with chronic inflammation. The aim of this study was to analyse whether the inhibiti...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2006.02.035
更新日期：2006-04-24 00:00:00
abstract：:Dorsal root potentials were recorded from urethane-anaesthetised rats. Bicuculline, a recognised GABA antagonist, reduced the amplitude of the potential to 67% of control. Cismethrin, a synthetic pyrethroid insecticide, enhanced the potential to 142% of control values. The convulsions associated with cismethrin poison...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(80)90304-0
更新日期：1980-08-22 00:00:00
abstract：:We previously reported that circulating lipid (malondialdehyde, MDA) and protein oxidation (carbonyl residues, CO) products can be used as markers of risk for complications in poorly controlled type 2 diabetics. Now, we aimed to evaluate the existence of a gender effect on classical disease markers and oxidative stres...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2015.09.041
更新日期：2015-11-05 00:00:00
abstract：:A series of 26 drugs was tested for in vitro binding to opiate receptors in the presence and absence of 0.1 M NaCl. The results were correlated with assays for in vivo pharmacological potency. Highly significant correlation was found between binding in the presence and absence of sodium ions and analgesic potency. For...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(77)90334-x
更新日期：1977-12-01 00:00:00
abstract：:Helicobacter pylori (H. pylori) and nonsteroidal anti-inflammatory drugs (NSAID) are the most common pathogens in the gastroduodenal mucosa in animals and humans, but their relationship in ulcerogenesis has been little studied. According to some authors, H. pylori infection in humans does not act synergistically with ...
journal_title：European journal of pharmacology
pub_type： 杂志文章,评审
doi：10.1016/s0014-2999(02)01909-x
更新日期：2002-08-02 00:00:00
abstract：:Rats were given powdered diet containing L-DOPA (together with the peripheral decarboxylase inhibitor carbidopa) for a period of 6 months. The estimated daily intake was in the range 20-30 mg/kg. Initially, at 1 week and 1 month, L-DOPA-fed rats exhibited enhanced spontaneous locomotor activity, but this fell to withi...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(82)90626-4
更新日期：1982-04-23 00:00:00
abstract：:The competitive reversible beta-adrenoceptor antagonist activity of Ro 03-5255 [1-(5-acetylaminobenzfuran-2-yl)-2-isopropylaminoethanol] upon isoprenaline-induced increases of the rate and tension of guinea-pig isolated atria is described. The chlorinated derivative [Ro 03-7894; 1-[5-chloracetylaminobenzfuran-2-yl)-2-...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(78)90278-9
更新日期：1978-12-01 00:00:00
abstract：:The influence of the anti-epileptic drug, valproate, on K conductance (gK) was investigated in voltage-clamped Ranvier nodes of Xenopus laevis. A double pulse method was used in order to eliminate the effect of accumulation of potassium ions in the perinodal space, thus enabling the determination of the 'true' magnitu...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(90)90676-w
更新日期：1990-08-02 00:00:00
abstract：:The roles of α2-adrenergic receptors located in the spinal cord in the regulation of blood glucose levels were studied in imprinting control region (ICR) mice. Mice were treated intrathecally (i.t.) with clonidine or yohimbine, and the blood glucose levels were measured at 0, 30, 60 and 120min after i.t. administratio...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2014.08.022
更新日期：2014-10-15 00:00:00
abstract：:Phorbol esters reduce depolarization-evoked Ca2+ influx in adrenal chromaffin cells, suggesting that voltage-sensitive Ca2+ channels (VSCCs) are inhibited by protein kinase C-mediated phosphorylation. We now address the possibility that L- and P/Q-type Ca2+ channel subtypes might be differentially involved in phorbol ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(98)00908-x
更新日期：1999-02-05 00:00:00
abstract：:Lemnalol (8-isopropyl-5-methyl-4-methylene-decahydro-1,5-cyclo-naphthalen-3-ol) is a natural compound isolated from the marine soft coral Lemnalia cervicorni. In the present study, the anti-inflammatory and anti-nociceptive properties of lemnalol were investigated in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2007.08.048
更新日期：2008-01-14 00:00:00
abstract：:The present study was undertaken to investigate vascular function in hypercholesterolemic rabbits and also to characterize the effects of pioglitazone on it. Rabbits were fed normal, 0.5% cholesterol chow, or 0.5% cholesterol chow plus 300 ppm pioglitazone for 5 or 10 weeks. The tension of isolated renal artery rings ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2004.06.062
更新日期：2004-08-30 00:00:00
abstract：:Interactions between cannabinoid CB(1) and GABA receptors and ligands were investigated in the myenteric plexus-longitudinal muscle of the guinea pig ileum. Electrically evoked contractions of the myenteric plexus-longitudinal muscle were inhibited by the cannabinoid receptor agonist CP55,940 ((-)-cis-3-[2-Hydroxy-4-(...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(01)01530-8
更新日期：2002-01-02 00:00:00
abstract：:The pharmacological profiles of tachykinin receptors mediating the release of acetylcholine were examined in the isolated spinal cord of the neonatal rat. The acetylcholine release evoked by neurokinin A or acetyl-[Arg6,Pro9]substance P-(6-11) was depressed by the tachykinin antagonists, spantide and GR71251 at 10 mic...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(93)90939-f
更新日期：1993-09-07 00:00:00
abstract：:The detrimental cardio-toxic effect of doxorubicin, an effective chemotherapeutic agent, limited its clinical use. It has been claimed that doxorubicin cardio-toxicity occurs through calcium ions (Ca2+) overload and reactive oxygen species production. Agmatine, an endogenous imidazoline receptor agonist, induce uptake...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2016.12.022
更新日期：2017-02-05 00:00:00
abstract：:Although cyclosporine A (CsA) is a potent immunomodulating agent and is commonly used as a systemic agent for the management of psoriasis patients, current clinical treatments are not always effective due to the clinical inefficacy of low-doses and numerous harmful effects of higher doses. Currently, the combined use ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2015.03.010
更新日期：2015-06-05 00:00:00
abstract：:Lergotrile and apomorphine, two direct-acting dopamine agonists, caused marked hyperglycemia in fasted rats, while compounds which release endogenous dopamine (amphetamine, methylphenidate) or inhibit dopamine reuptake (LR5182), failed to elevate blood glucose. The effect of lergotrile was dose dependent, causing bloo...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(79)90028-1
更新日期：1979-10-26 00:00:00
abstract：:Fibrate derivatives are commonly used to treat hyperlipidaemia; however, the mechanism of the antilipidaemic action of these drugs is still unknown. The effect of clofibrate (fibrate derivative) administration for 14 days on lipogenesis and on malic enzyme (EC 1.1.1.40) and fatty acid synthase (EC 2.3.1.85) gene expre...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(99)00129-6
更新日期：1999-04-16 00:00:00
