Abstract:
:Endothelin is a vasoconstrictor peptide which has recently been isolated and sequenced from the vascular endothelial cells. It was reported to increase blood pressure in vivo and produce a prolonged contraction with a slow onset in vitro. The purpose of this study was to investigate whether endothelin can lower the portal pressure as another endogenous vasoconstriction peptidevasopressin (AVP) can. Heart rate, systemic blood pressure, portal pressure, and portal vein blood flow were measured. Effects of endothelin on these parameters were compared with those of AVP. Endothelin 10(-10) mol/Kg significantly decreased all of the parameters mentioned. At the higher dose (5 x 10(-10) mol/Kg), however, the portal pressure and blood pressure were increased and portal vein blood flow was unchanged. On the other hand, AVP decreased the portal pressure and portal vein blood flow but elevated the systemic blood pressure. In vitro experiments revealed that endothelin contracted both tail artery and portal vein of rat and vasopressin contracted only tail artery. We concluded that although both are endogenous vasoconstricting peptides, endothelin and AVP affect differently on arterial and venous vascular beds as well as on portal pressure.
journal_name
Life Scijournal_title
Life sciencesauthors
Yang MC,Yu PC,Tu MS,Lay CS,Hong CY,Chou CK,Chen CF,Kuo JSdoi
10.1016/0024-3205(90)90508-osubject
Has Abstractpub_date
1990-01-01 00:00:00pages
1929-36issue
26eissn
0024-3205issn
1879-0631pii
0024-3205(90)90508-Ojournal_volume
46pub_type
杂志文章相关文献
LIFE SCIENCES文献大全abstract::The pathogenesis of abdominal aortic aneurysm remains unclear. The aim of the present study was to establish whether isoleucyl-tRNA synthetase (Iars) regulates the differentiation and apoptosis of vascular smooth muscle cells (VSMCs) during the development of abdominal aortic aneurysm (AAA). In addition, the contribut...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2019.03.052
更新日期:2019-05-01 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 produced thiamine-deficient (TD) mice by TD diet treatment. The growth curve of mice on TD feeding was sharply increased until on the 10th day and subsequently the body weight gradually decreased. The mortality rate in mice was about 67% on the 30th day after the start of TD feeding. We performed the forced swimmin...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(01)01206-1
更新日期:2001-07-27 00:00:00
abstract:AIMS:The aim of this study was to comparatively investigate the potential gastroprotective effect and underlying mechanisms of coptisine free base (CFB, 8-hydroxy-7, 8-dihydrocoptisine), berberine and lansoprazole against indomethacin-induced gastric ulcer in rats. MATERIALS AND METHODS:CFB (10, 20 and 40mg/kg), berbe...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2017.12.004
更新日期:2018-01-15 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::Using a dipole tracing method based on the two-dipole model, the purpose of the present study was to investigate alcohol-induced changes in the alpha band of electroencephalogram (EEG) and its equivalent current dipoles (ECDs) in 12 healthy male volunteers, who were genetically typed for mitochondrial aldehyde dehydro...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(00)00707-4
更新日期:2000-01-01 00:00:00
abstract::Virgin, male Sprague-Dawley rats were used to study the production of cardiac failure by a single subcutaneous injection of 85 mg/kg dl-isoproterenol (ISO) and the possible preservation of cardiac function by a pre-treatment of 50 mg/kg verapamil (VER) 5 min prior to 85 mg/kg ISO. At 24 hrs after drug injections cardi...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(82)90512-4
更新日期:1982-01-18 00:00:00
abstract:AIMS:The aims of the study are to investigate whether the combination of adipose-derived stem cells (ADSCs) with decellularized extracellular matrix (dECM) of myocardium can exert synergistic therapeutic effects on acute MI and the underlying mechanism. MAIN METHODS:Myocardial dECM from fresh porcine myocardium was pr...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2019.116891
更新日期:2019-12-15 00:00:00
abstract:AIMS:Baicalein is a widely used Chinese herbal medicine extracted from Labiatae plants Scutellaria baicalensis Georgi's dry root, which has multiple pharmacological activities. However, the precise mechanism of baicalein against myocardial remodeling remains poorly understood. The aim of our study was to investigate th...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2015.12.036
更新日期:2016-01-15 00:00:00
abstract::We investigated the role of nitric oxide (NO) and endothelium-derived hyperpolarizing factor (EDHF) in hemodynamic action of leptin. The effect of leptin (1 mg/kg i.p.) on systolic blood pressure (SBP) was examined in lean rats and in rats made obese by feeding highly palatable diet for either 1 or 3 months. Separate ...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2005.12.041
更新日期:2006-05-30 00:00:00
abstract::Quercetin, a plant flavonoid, blocks signal transduction pathways by inhibiting 1-phosphatidylinositol 4-kinase (EC 2.7.1.67, PI kinase) and 1-phosphatidylinositol 4-phosphate 5-kinase (EC 2.7.1.68, PIP kinase), resulting in a reduction of inositol 1,4,5-trisphosphate (IP3) concentration which decreases the release of...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(95)02085-w
更新日期:1995-01-01 00:00:00
abstract::We report an ongoing within-family selective breeding project for the severity of handling-induced withdrawal seizures in mice made physically dependent on ethanol by inhalation. Two Withdrawal Seizure Prone (WSP) and two Withdrawal Seizure Resistant (WSR) lines have been subjected to five generations of selection, an...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(83)90751-8
更新日期:1983-09-05 00:00:00
abstract::The present study shows that morphine reduces the pulmonary inflammatory response to intranasal influenza virus infection in rats. Rats were infected with rat-adapted influenza virus (RAIV), which is a unique infectious agent because normal rats develop an acute pulmonary inflammatory response to RAIV and rapidly clea...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(99)00348-3
更新日期:1999-01-01 00:00:00
abstract::A previously unreported anti-bacterial activity against Escherichia coli has been found in porcine and bovine sera, but not in human or chicken sera. The activity is not affected by heat inactivation of the complement system, and is bacteriostatic rather than bactericidal. Growth inhibition is reversible by addition o...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(95)00277-d
更新日期:1995-01-01 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::The reproductive system effects of cocaine were studied in male rats. The analysis included measurements of circulating levels of luteinizing hormone (LH) and testosterone (T) by radioimmunoassay (RIA). The weights of the testes and sex accessory organs were also assessed and compared with control animals. Dosage leve...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(89)90440-2
更新日期:1989-01-01 00:00:00
abstract::Trimidox (3,4,5-trihydroxybenzohydroxamidoxime), a recently synthesized inhibitor of ribonucleotide reductase (RR), was shown to exert anti-proliferative activities in HL-60 and K562 human leukemia cell lines and to prolong the life span of mice inoculated with L1210 mouse leukemia cells. Here we test whether trimidox...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(00)00901-2
更新日期:2000-11-17 00:00:00
abstract:AIMS:To explore the role of chemokine CC motif ligand 2 (CCL2) in spatial memory and cognition impairment, and the underlying mechanisms focused on inflammatory, glutamate metabolistic and apoptotic- associated mRNA expression. MATERIALS AND METHODS:Stereotaxic surgery was performed here to establish a rat model by bi...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2020.117828
更新日期:2020-08-15 00:00:00
abstract::Vascular smooth muscle cell (VSMC) accumulation and endothelial cell dysfunction are associated with pathogenesis of atherosclerosis. Long noncoding RNA taurine up-regulated gene 1 (TUG1) has been reported to play an important role in cardiovascular diseases, including atherosclerosis. However, the regulatory mechanis...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2020.117287
更新日期:2020-02-15 00:00:00
abstract::First isolated some 10 years ago as the endogenous ligand for the "orphan opioid receptor" (ORL-1, now designated NOP), nociceptin/orphanin FQ (N/OFQ) has proved to be a potent inhibitory neuropeptide found across the neuraxis. Because of the homologies between opioids and N/OFQ, functional studies of this peptide hav...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2005.06.001
更新日期:2005-11-04 00:00:00
abstract:OBJECTIVE:To investigate the protective efficacies and potent mechanisms of combination therapy with semaglutide and rosiglitazone (RSG) on the high-glucose incubated human ARPE-19 cells and diabetic retinopathy (DR) model rats. MAIN METHODS:The CCK-8 methods were used to evaluate the protective effects of semaglutide...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2020.119013
更新日期:2021-01-05 00:00:00
abstract:AIMS:This study aims to evaluate the relationship between the amount of physical activity and different traditional and novel cardiometabolic risk factors, as well as atheroprotective agents, in male children and adolescents. MAIN METHODS:Cross-sectional study. A total of 337 male children and adolescents aged 7-14 ye...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2013.05.021
更新日期:2013-07-30 00:00:00
abstract:AIMS:Right ventricular failure (RVF) varies significantly from the more common left ventricular failure (LVF). This study was undertaken to determine potential molecular pathways that are important in human right ventricular (RV) function and may mediate RVF. MATERIALS AND METHODS:We analyzed mRNA of human non-failing...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2018.01.021
更新日期:2018-03-01 00:00:00
abstract::Atherosclerosis (AS) is a chronic inflammatory disease that results from Oxidized low-density lipoprotein (Ox-LDL) induced endothelial dysfunction. Cytoplasmic polyadenylation element binding protein 1 (CPEB1) is closely related to the development of epithelial cells, but the role of CPEB1 in AS remains unknown. The R...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2019.116874
更新日期:2019-12-15 00:00:00
abstract::Human milk was tested in the Ames plate incorporation test using strain TA98. Pools from smokers and non-smokers respectively, as well as individual samples from 14 smokers and 15 controls were tested. No difference was found between milk from smokers and non-smokers in the concentrations and volumes used. Preliminary...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(87)90663-1
更新日期:1987-11-23 00:00:00
abstract::The role of islet amyloid polypeptide, also known as amylin, in insulin resistance and in the etiology of diabetes has been a subject of debate. Increased plasma amylin levels have been observed in both obese and type II diabetic patients. However, data on endogenous amylin levels with relation to pharmacological inte...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(91)90546-n
更新日期:1991-01-01 00:00:00
abstract:AIMS:Ideally, mesenchymal stem cells (MSC) home to and/or remain at the site of damaged myocardium when administered after myocardial infarction. However, MSC may not remain in the heart, but instead relocate to other areas. We investigated quantitatively the distribution of labeled rat MSC, given by two routes after c...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2008.07.020
更新日期:2008-09-26 00:00:00
abstract::The objective of this study was to determine the primary event that occurs in Ca2+-regulatory sarcoplasmic-reticular (SR) proteins during subacute transition from concentric/mechanically-compensated left ventricular (LV) hypertrophy to eccentric/decompensated hypertrophy. Using Dahl salt-sensitive rats with hypertensi...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(01)01383-2
更新日期:2001-11-30 00:00:00
abstract::The in vivo effect of trazodone on the density of [(3)H]5-HT binding sites and 5-HT(1A) receptors and adenylyl cyclase (AC) response was studied in regions of rat brain. The chronic administration of trazodone (10 mg/Kg body wt, 40 days) resulted in a significant downregulation of [(3)H]5-HT binding sites and 5-HT(1A)...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(02)01926-4
更新日期:2002-08-16 00:00:00
abstract::The effect of the Type I benzodiazepine (BDZ) receptor agonist, CL 218,872, on convulsions generated by low doses of methyl beta-carboline-3-carboxylic acid ( MBCC ), bicuculline, picrotoxin and pentylenetetrazole (PTZ) in mice was examined. Low doses of CL 218,872 enhanced the convulsions produced by all agents excep...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(84)90321-7
更新日期:1984-05-28 00:00:00