Abstract:
AIMS:JM-1232(-) ((-)-3-[2-(4-methyl-1-piperazinyl)-2-oxoethyl]-2-phenyl-3,5,6,7-tetrahydrocyclopenta[f] isoindole-1(2H)-one) is a novel isoindoline compound that acts on benzodiazepine receptors. Clinical trials are being conducted to assess its potential clinical use as an intravenous anesthetic or sedative agent. In the present study, we investigated the possibility of QT prolongation caused by JM-1232(-). MAIN METHODS:We examined telemetry electrocardiogram (ECG) recordings from unrestrained guinea pigs after intravenous administration of 1, 10, 25 or 50mg/kg of JM-1232(-). We also examined in situ measurements of monophasic action potential duration at 30 and 90% of repolarization (MAP(30) and MAP(90), respectively) and MAP triangulation (MAP(90-30)) from guinea pig hearts that were perfused on a Langendorff apparatus with 0, 0.1, 1, 5, 10 and 20 microg/ml of JM-1232(-). The telemetry ECG recordings showed QTc prolongation 20 min after administration of JM-1232(-) at 50mg/kg. KEY FINDINGS:In Langendorff-perfused hearts, MAP(30), which indicates Ca(2+) current, was significantly shortened after perfusion with JM-1232(-) at 10 and 20 microg/ml. MAP(90), which indicates K(+) current, was significantly prolonged after perfusion with JM-1232(-) at 20 microg/ml; therefore, this prolongation was attributed to a decreased heart rate. MAP triangulation (MAP(90-30)) was significantly prolonged after perfusion with JM-1232(-) at 5, 10 and 20 microg/ml; however, this prolongation was attributed to the shortened MAP(30), suggesting a possible inhibition of Ca(2+) influx. SIGNIFICANCE:High-dose (more than 50 times the hypnotic dose) JM-1232(-) treatment associated with a high plasma concentration of the drug is unlikely to cause QT prolongation with subsequent torsades de pointes.
journal_name
Life Scijournal_title
Life sciencesauthors
Kato R,Watanabe R,Miki H,Ijiri Y,Hayashi T,Tanaka Kdoi
10.1016/j.lfs.2009.10.002subject
Has Abstractpub_date
2009-11-18 00:00:00pages
737-41issue
21-22eissn
0024-3205issn
1879-0631pii
S0024-3205(09)00418-4journal_volume
85pub_type
杂志文章相关文献
LIFE SCIENCES文献大全abstract::The effect of triiodothyronine (T3) on Na+,K(+)-ATPase activity of K562 human erythroleukemic cell was studied to understand why the erythrocyte sodium pump activity is decreased in hyperthyroidism. Na+,K(+)-ATPase activity of K562 cell lysates was assayed by measuring the release of inorganic phosphate (Pi) from ATP....
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(92)90107-z
更新日期:1992-01-01 00:00:00
abstract::This study was designed to document possible changes in bupivacaine kinetics in mice after a single 1 mg/kg injection of flumazenil. After a single 20 mg/kg i.p. dose of bupivacaine, C max, Vd, Cl and AUC were not significantly modified by flumazenil; even if T max was shown to be significantly shorter when flumazenil...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(93)90073-c
更新日期:1993-01-01 00:00:00
abstract:AIM:The purpose of this study was to investigate whether the flavonoid quercetin can prevent alterations in the behavioral tests and of cholinergic neurotransmission in rats submitted to the ethidium bromide (EB) experimental demyelination model during events of demyelination and remyelination. MAIN METHODS:Wistar rat...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2014.03.033
更新日期:2014-05-17 00:00:00
abstract::Acute myocardial infarction is associated with high rates of morbidity and mortality and can cause irreversible myocardial damage. Timely reperfusion is critical to limit infarct size and salvage the ischemic myocardium. However, reperfusion may exacerbate lethal tissue injury, a phenomenon known as myocardial ischemi...
journal_title:Life sciences
pub_type: 杂志文章,评审
doi:10.1016/j.lfs.2020.118628
更新日期:2021-01-01 00:00:00
abstract:AIM:The impact of the sympathetic nervous system (SNS) on the regulation of circadian rhythm and physiological functions is still not clear. Previous studies have found that essence of chicken (EC) supplementation facilitated the physiological adaption and circadian resetting in rats subjected to jet lag. Herein, the e...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2018.03.047
更新日期:2018-05-15 00:00:00
abstract::This study examined the effect of nitric oxide (NO) on the cytosolic free Ca(2+) concentration ([Ca(2+)](c)) of alpha-cells isolated from rat pancreatic islets. When extracellular glucose was reduced from 7 to 0 mM, about half of the alpha-cells displayed [Ca(2+)](c) oscillations. Nicardipine, a Ca(2+) channel blocker...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(02)01608-9
更新日期:2002-05-24 00:00:00
abstract::Testosterone propionate, cortisone, or sesame oil vehicle were given to rats during the last week of pregnancy so that effects of the hormones on anogenital distance, breeding capacity and vaginal opening of the female progeny could be contrasted. Testosterone significantly increased anogenital distance and delayed va...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(92)90248-n
更新日期:1992-01-01 00:00:00
abstract::Cloned human MCF-7 breast tumor cells were prevented from proliferating when grown in charcoal-dextran stripped human female serum (CDFHS)-supplemented media (40% and 10%); this inhibition was maximally cancelled by estradiol-17, cisTamoxifen, and Metabolite E, whereas Tamoxifen, N-desmethylTamoxifen and Metabolite Y ...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(85)90510-7
更新日期:1985-07-29 00:00:00
abstract::The opioid peptides [Met] enkephalin-Arg6-Phe7, [Met]-enkephalin-Arg6-Gly7-Leu8, and BAM-12P were identified in various ares of human brain by use of a combination of radioimmunoassay (RIA), gel filtration, and high performance liquid chromatography (HPLC). The highest levels of each peptide were found in striatum, fo...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(83)90439-3
更新日期:1983-01-01 00:00:00
abstract::Intravenous (IV) administration of 10 ug/kg of morphine sulfate increased the firing rate of Type A dopamine neurons but decreased the extracellular activity of Type B dopamine cells in the substantia nigra pars compacta and ventral tegmental area of anesthetized male rats. The morphine-produced increase in Type A cel...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(82)90153-9
更新日期:1982-11-15 00:00:00
abstract:AIMS:This study was aimed to investigate the effect of Lycium barbarum polysaccharides (LBP) on renal function and inflammatory reaction in rabbits with diabetic nephropathy. MAIN METHODS:Diabetes was induced by injecting alloxan (ALX). Japanese male white rabbits were randomly assigned into 5 groups: normal control g...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2016.05.045
更新日期:2016-07-15 00:00:00
abstract:AIMS:microRNA-96 (miR-96) is considered as a tumor suppressor in multiple malignancies. Some studies have indicated that EZRIN could be regulated by the miR-96 in several kinds of cancer cells. However, the function of miR-96 in human osteosarcoma has not been investigated intensively so far. In this study, we mainly e...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2018.04.012
更新日期:2018-06-15 00:00:00
abstract:AIMS:The mechanisms underlying the changes in blood-brain barrier (BBB) integrity and the generation of seizures in childhood associated with preexisting brain lesions like cortical dysplasia (CD) are poorly understood. We investigated the effects of levetiracetam (LEV) on BBB integrity and the survival during hyperthe...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2010.09.014
更新日期:2010-11-20 00:00:00
abstract::Diltiazem, diazepam, and clonazepam effectively inhibit Na+-induced Ca2+ release from mitochondria isolated from rabbit heart and rat brain. At 10 mM NaCl, the 50% inhibition of the rate of Ca2+ release occurred at 5, 7, 40 and 350 microM of clonazepam d-cis-diltiazem, diazepam and 1-cis-diltiazem, respectively. Ro 15...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(83)90319-3
更新日期:1983-06-20 00:00:00
abstract::Hypoxia-induced neuronal damage and glutamate release were investigated in a N(2)- or in xenon-atmosphere for embryonic rat cortical neurons; cellular damage and glutamate over-release were observed in N(2)-treated cells whereas xenon protected the cells from the hypoxic insult. The protective effect of xenon was stro...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(02)02439-6
更新日期:2003-03-14 00:00:00
abstract::Sleep is crucial to improve athlete performance and their circadian rhythm, but sleep patterns may be disturbed because athletes participate in several competitions. In addition, intensive training programs can cause muscle pain and psychological stress in athletes, resulting in a lack of sleep. Sleep also plays a cri...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2019.116835
更新日期:2019-10-15 00:00:00
abstract::Identification of the neural substrates subserving audiogenic convulsions in the GEPR is an important task and while it is not yet complete, many laboratories employing various techniques have contributed importantly to our current understanding. The present review focuses on the use of lesions to identify the neural ...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(86)90367-x
更新日期:1986-09-08 00:00:00
abstract:AIMS:Hyperphosphatemia is an independent risk factor of cardiovascular events in the patients with chronic kidney disease. High phosphate can induce endothelial cell apoptosis, but the exact mechanism is not clear. This study fills this knowledge gap. MATERIALS AND METHODS:Microarray analysis was used to identify diff...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2015.03.017
更新日期:2015-06-15 00:00:00
abstract::Triiodothyronine (T3) and estrogen (E2) play important roles in the bone remodeling process and signaling of receptor activator of the nuclear factor-kappa β (RANKL) and osteoprotegerin (OPG) expressed by osteoblasts. However, little is known of the molecular action of these hormones in conditions of hyperthyroidism a...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2019.116556
更新日期:2019-08-15 00:00:00
abstract::To assess the possible role of altered central serotonin function in psychiatric disorders, investigators have utilized pharmacological challenge testing with an amino acid mixture to decrease blood tryptophan concentration and, indirectly, brain serotonin levels. The aim of this pilot study was to assess the effectiv...
journal_title:Life sciences
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/0024-3205(95)00103-4
更新日期:1995-03-17 00:00:00
abstract::Many hormones are known to induce the activity of ornithine decarboxylase (ODC), the first and rate-limiting enzyme for polyamine biosynthesis, in their target tissues. Using ovariectomized rats, we have compared the effects of sex hormones on ODC activity in the uterus and the kidney which contain estrogen and androg...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(90)90219-h
更新日期:1990-01-01 00:00:00
abstract::Reoxygenation of the ischemic tissue promotes the generation of various reactive oxygen metabolites (ROM) which are known to have deleterious effects on various cellular functions. This study was designed to determine the possible protective effect of mesna (2-Mercaptoethane Sulfonate) on renal ischemia/reperfusion (I...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2004.04.029
更新日期:2004-09-24 00:00:00
abstract:AIMS:Osteoblasts and adipocytes originate from common precursor cells. We examined the effects of bone morphogenetic protein-2 (BMP-2) on the molecular mechanisms governing the diametric actions of BMP-2 on simultaneous mature osteoblast and adipocyte differentiation in a clonal mesenchymal progenitor cell line, ROB-C2...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2008.12.011
更新日期:2009-02-27 00:00:00
abstract::Doxorubicin and daunorubicin, the anthracycline antitumor agents, were evaluated for their in vitro and in vivo effect on phosphodiesterase (PDE) activity in mouse tissues. Doxorubicin at a concentration of 10(-4)M inhibited cardiac c-AMP (adenosine 3',5', monophosphate) PDE activity 50% of the control whereas in lung...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(85)90641-1
更新日期:1985-02-11 00:00:00
abstract::Bone matrix turnover is regulated by matrix metalloproteinases (MMPs), tissue inhibitors of matrix metalloproteinases (TIMPs), and the plasminogen activation system, including tissue-type plasminogen activator (tPA), urokinase-type plasminogen activator (uPA), and plasminogen activator inhibitor type-1 (PAI-1). We pre...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2006.01.040
更新日期:2006-07-04 00:00:00
abstract::We describe here a nonpeptide neuropeptide Y Y1 receptor antagonist, 2,4-dioxo-1,5-bis(2-oxo-2-orthotolyl-ethyl)-3-[3-[3-([3-[3-(3-p iperidin-1-ylmethyl-phenoxy)-propylcarbamoyl]-propyl]-car bamoyloxymethyl)-phenyl]-ureido]-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diaz epine (Compound 1), which was previously synthesized as...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(98)00357-9
更新日期:1998-01-01 00:00:00
abstract::Three continuous cell lines isolated from small cell carcinoma of the lung (SCCL) have been examined for their ability to take up and metabolize the biogenic amine precursors, L-DOPA and 5-hydroxytryptophane (5-HTP). In two of the three lines formaldehyde-induced fluorescence (FIF) and mass-spectrographic analysis ind...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(82)90020-0
更新日期:1982-04-19 00:00:00
abstract::BIM 23014 is a somatostatin analog displaying an increased biological half life due to resistance to enzymatic degradation. This peptide inhibits GH release directly at the level of pituitary somatotrophs. In addition, an action of BIM 23014 at the level of the hypothalamus is possible since somatostatinergic fibers a...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(92)90610-2
更新日期:1992-01-01 00:00:00
abstract::Despite the lack of knowledge of the effects of electronic cigarettes (e-cigarettes, e-cigs) on public health, they have been proposed as a part of smoking cessation efforts. Recently, several basic scientific studies have pointed out how e-cigs can generate carcinogens, such as e-cig liquid thermal degradation by-pro...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2019.04.059
更新日期:2019-07-01 00:00:00
abstract::Guinea pig ileum longitudinal muscle/myenteric plexus preparations contain functional mu- and kappa-opioid receptors. A preparation with blocked kappa receptors was obtained by pretreating guinea pigs with 0.1-10.0 mg/kg intraperitoneal doses of a new kappa-selective affinity label, DIPPA (2-(3,4-dichlorophenyl)-N-met...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(97)00076-3
更新日期:1997-01-01 00:00:00