Evidence for dopaminergic modulation of pancreatic polypeptide secretion in man.

abstract：:Experiments were done to examine the analgesic effect of thiorphan alone or in combination with stress in mice. Analgesia was assessed by measuring jump latencies from a 55 degrees C hot plate. Thiorphan exhibited weak analgesic properties evidenced by significant increases in jump latencies only after 300 mg/kg i.p. ...

journal_title：Life sciences

authors： Greenberg R,O'Keefe EH

更新日期：1982-09-20 00:00:00

abstract：:Ovine fetal renal responses to ANF decrease during the last third of gestation, although circulating fetal plasma atrial natriuretic factor (ANF) levels are higher than in the maternal circulation, and do not change with gestation. This study examined whether previously reported maturational changes in fetal renal res...

journal_title：Life sciences

authors： Dodd A,Kullama LK,Ervin MG,Leake RD,Ross MG

更新日期：1994-01-01 00:00:00

abstract：:A time course study on the effects of an interferon inducing agent, polyriboinosinic polyribocytidylic acid (poly rIrC) on the hepatic cytochrome P-450 dependent progesterone metabolism was performed. Administration of a single dose of poly rIrC (10 mg/kg i.p.) to adult male Wistar rats caused a time dependent effect ...

journal_title：Life sciences

authors： Wong JY,Lee EJ,Moochhala SM

更新日期：1993-01-01 00:00:00

abstract：AIMS:Sickle cell disease (SCD) pathogenesis leads to recurrent vaso-occlusive and hemolytic processes, causing numerous clinical complications including renal damage. As vasoconstrictive mechanisms may be enhanced in SCD, due to endothelial dysfunction and vasoactive protein production, we aimed to determine whether th...

journal_title：Life sciences

authors： dos Santos AF,Almeida CB,Brugnerotto AF,Roversi FM,Pallis FR,Franco-Penteado CF,Lanaro C,Albuquerque DM,Leonardo FC,Costa FF,Conran N

更新日期：2014-11-04 00:00:00

abstract：:Cyclic octapeptide analogues of somatostatin (SS) like SMS 201-995 [H-(D) Phe-Cys-Phe-(D) Trp-Lys-Thr-Cys-Thr(ol)] or its Tyr3-derivative 204-090, displaced [125I-Tyr11]-SS 100% from pancreatic membranes but only 62-75% from brain membranes; the remaining sites were displaced by SS. These data indicate that some mini-...

journal_title：Life sciences

authors： Reubi JC

更新日期：1985-05-13 00:00:00

abstract：:This study was undertaken to investigate whether or not alpha 2-adrenergic pathways would negatively modulate the hypothalamic somatostatin release in rats. To induce pharmacological changes in SS release, three groups of male Sprague-Dawley rats (n = 30/group) were separately anesthetized by ip administration of uret...

journal_title：Life sciences

authors： Lima L,Arce V,Tresguerres JA,Devesa J

更新日期：1993-01-01 00:00:00

abstract：AIMS:Acute respiratory distress syndrome (ARDS) is characterized by acute hypoxemia with diffuse alveolar damage and increased pulmonary microvascular permeability. Honokiol (HKL), the principal active ingredient of Chinese herb magnolia officinalis, protected the lung of experimental ARDS models via attenuation of inf...

journal_title：Life sciences

authors： Chen L,Li W,Qi D,Lu L,Zhang Z,Wang D

更新日期：2018-10-01 00:00:00

abstract：AIM:Over-expression of histone deacetylase 8 (HDAC8) has been demonstrated in breast cancer. But the underlying molecular mechanism of HDAC8 on the progression of breast cancer remains unknown. MicroRNAs (miRs) are proposed as important molecules in cancer progression by targeting specific oncogenes or tumor-suppressor...

journal_title：Life sciences

authors： Menbari MN,Rahimi K,Ahmadi A,Elyasi A,Darvishi N,Hosseini V,Mohammadi-Yeganeh S,Abdi M

更新日期：2019-11-15 00:00:00

abstract：:Despite the fact that numerous studies have been published regarding the possible presence in plasma of an endogenous Na-K pump inhibitor with a digitalis-like structure in essential hypertension, very little is known about this factor in heart disease in general, and in situations characterized by low cardiac output....

journal_title：Life sciences

authors： Delva P,Barbieri E,Devynck MA,Capra C,Pernollet MA,Meyer P,Destro G,Zardini P,Lechi A

更新日期：1990-01-01 00:00:00

abstract：:The aim of this study was to assess the anxiolytic effect of berberine (abbrev. BER) using two experimental anxiety models in the mouse. In the black and white test of anxiety, berberine (100, 500 mg/kg) produced an increase in the first time entry, time spent in the white section, and total changes between two compar...

journal_title：Life sciences

authors： Peng WH,Wu CR,Chen CS,Chen CF,Leu ZC,Hsieh MT

更新日期：2004-10-01 00:00:00

abstract：:Adult female Sprague-Dawley rats were prepared with permanent cortical EEG and temporalis EMG electrodes and i.v. cannulae. They were made tolerant to and physically dependent on morphine by automatic, hourly injections. These physically dependent rats were then trained to lever press for 10 mg/kg injections of morphi...

journal_title：Life sciences

authors： Khazan N,Young GA,Calligaro D

更新日期：1983-01-01 00:00:00

abstract：AIM:This study aimed to evaluate the effects of Wortmannin, an inhibitor of phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt), on aortic hyporeactivity to Phenylephrine (Phe) and nitric oxide bioavailability associated with pregnancy in hypertensive rats. MAIN METHODS:The intact aortic rings of pregnant and ...

journal_title：Life sciences

authors： Zancheta D,Troiano JA,Potje SR,Cavalari P,Sumida DH,Antoniali C

更新日期：2015-02-01 00:00:00

abstract：:Since the introduction of Channelrhodopsin-2 (ChR2) to neuroscience, optogenetics technology was developed, making it possible to activate specific neurons or circuits with spatial and temporal precision. Various ChR2 transgenic animal models have been generated and are playing important roles in revealing the mechani...

journal_title：Life sciences

authors： Ji ZG,Wang H

更新日期：2016-04-01 00:00:00

abstract：:The present investigation was aimed at comparing the influence of the partial dopamine (DA) receptor agonist (-)-3-PPP (preclamol) on prolactin release in acutely hyperprolactinemic but otherwise intact female rats and female rats subjected to chronic DA depletion. One group of animals received daily vehicle injection...

journal_title：Life sciences

authors： Carlsson M,Eriksson E

更新日期：1988-01-01 00:00:00

abstract：:Immunotherapy methods using potential tumor microenvironment modulators have elicited durable therapeutic responses in cancer treatment. Immune checkpoint molecule programmed cell death-ligand 1 (PD-L1) and oncogenic transcription factor STAT3 (signal transducer and activator of transcription-3) assigned as inhibitory...

journal_title：Life sciences

authors： Bastaki S,Aravindhan S,Ahmadpour Saheb N,Afsari Kashani M,Evgenievich Dorofeev A,Karoon Kiani F,Jahandideh H,Beigi Dargani F,Aksoun M,Nikkhoo A,Masjedi A,Mahmoodpoor A,Ahmadi M,Dolati S,Namvar Aghdash S,Jadidi-Niaragh F

更新日期：2021-02-01 00:00:00

abstract：:We have confirmed that hypoxia elicits a substantial rise in blood choline levels in young adult rats. An intravenous infusion of tracer quantities of [2H4]-Ch, serial measurements of blood [2H0]-Ch and [2H4]-Ch, and a simple pharmacokinetic model were used to assess the bidirectional flux of choline between the centr...

journal_title：Life sciences

authors： Jenden DJ,Scremin OU,Roch M,Li G

更新日期：1996-01-01 00:00:00

abstract：:Effects of 1-methyl-4-phenylpyridine(MPP+), a putative neurotoxic metabolite of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine(MPTP), on the contents of dopamine were examined in the various regions of the rat brain. Under anesthesia with pentobarbital sodium and flunitrazepam, MPP+ 150 micrograms/rat was intracerebrove...

journal_title：Life sciences

authors： Okada M,Yokotani K,Yamashita M,Ikeda H,Osumi Y

更新日期：1989-01-01 00:00:00

abstract：:The experiments were designed to study whether the inhibitors of the uptake of serotonin (5-HT) potentiated the prejunctional effects of 5-HT on peripheral sympathetic nerves. The effect of two selective 5-HT uptake inhibitors, citalopram and fluoxetine, were studied on the presynaptic actions of 5-HT in the cat isola...

journal_title：Life sciences

authors： Adler-Graschinsky E,Butta NV,Elgoyhen AB

更新日期：1986-07-07 00:00:00

abstract：:The neurological mutant whirler mouse, one of several strains of waltzing mice, may be suitable as an animal model for testing studies relative to hyperkinesis. As in hyperkinetic children, behaviorally the mice are extremely restless, nervous, excitable, irritable and aggressive but also show symptoms of rotation beh...

journal_title：Life sciences

authors： Sackler AM,Weltman AS

更新日期：1985-08-05 00:00:00

abstract：:This study was undertaken to compare the activity of muscarinic and beta adrenergic receptors in bovine peripheral lung to the corresponding receptor activity in tracheal smooth muscle. We used [3H] quinuclidinyl benzilate (QNB) and [3H]dihydroalprenolol (DHA) to measure muscarinic and beta receptor activity, respecti...

journal_title：Life sciences

authors： Cheng JB,Townley RG

更新日期：1982-06-14 00:00:00

abstract：:We investigated lithium-induced changes in norepinephrine (NE) catabolism. NE and its major metabolites 3-methoxy-4-hydroxyphenylglycol (MHPG) and 3,4-dihydroxyphenyl glycol (DHPG), ions such as lithium (Li(+)), magnesium (Mg(2+)), and potassium (K(+)) were measured in rat plasma and cerebral cortex using an HPLC meth...

journal_title：Life sciences

authors： Sastre E,Nicolay A,Bruguerolle B,Portugal H

更新日期：2005-07-01 00:00:00

abstract：:Nucleotides, e.g. ATP and ADP, are important signaling molecules, which elicit several biological responses. The degradation of nucleotides is catalyzed by a family of enzymes called NTPDases (nucleoside triphosphate diphosphohydrolases). The present study reports the enzymatic properties of a NTPDase (CD39, apyrase, ...

journal_title：Life sciences

authors： Rico EP,Senger MR,Fauth Mda G,Dias RD,Bogo MR,Bonan CD

更新日期：2003-09-05 00:00:00

abstract：:The gastric mucosa is frequently exposed to different exogenous and endogenous ulcerative agents. Alcoholism is one of the risk factors for the development of mucosal damage in the stomach. This study aimed to assess if a probiotic strain Lactobacillus rhamnosus GG (LGG) is capable of protecting the gastric mucosa fro...

journal_title：Life sciences

authors： Lam EKY,Tai EKK,Koo MWL,Wong HPS,Wu WKK,Yu L,So WHL,Woo PCY,Cho CH

更新日期：2007-05-16 00:00:00

abstract：:L-dopa is the major treatment for Parkinson's disease (PD), but its efficacy is limited by the presence of dyskinesia. The dyskinesia develops over a period of exposure to L-dopa and is related to the dosage, therefore, the cause may involve inductive changes that produce toxic levels of metabolites, interfering with ...

journal_title：Life sciences

authors： Charlton CG,Crowell B Jr

更新日期：2000-04-21 00:00:00

abstract：:Single unit recordings were obtained from putative dopaminergic neurons in the substantia nigra of awake, freely moving rats. The cells exhibited waveforms, range of firing rates and types of firing patterns identical to those of identified DA neurons of anesthetized or paralyzed rats. Two firing patterns were observe...

journal_title：Life sciences

authors： Freeman AS,Meltzer LT,Bunney BS

更新日期：1985-05-20 00:00:00

abstract：:This review aims to systematically review and synthesize scientific evidence for the influence of air pollution exposure and outdoor exercise on health. We conducted a literature search in the PubMed, Cochrane, EMBASE, and Web of Science for articles that evaluated the combination effect of air pollution exposure and ...

journal_title：Life sciences

authors： Qin F,Yang Y,Wang ST,Dong YN,Xu MX,Wang ZW,Zhao JX

更新日期：2019-02-01 00:00:00

abstract：:The [R] and [S] enantiomers of the enkephalinase A inhibitor [R,S]-thiorphan have been prepared by asymmetric synthesis. The [S] isomer is principally responsible for the angiotensin converting enzyme inhibitory activity of [R,S]-thiorphan, whereas there were only small differences in the ability of the [R] and [S] is...

journal_title：Life sciences

authors： Scott WL,Mendelsohn LG,Cohen ML,Evans DA,Frederickson RC

更新日期：1985-04-01 00:00:00

abstract：:6-mercaptopurine (6-MP) has been used clinically for 40 years to maintain remission in patients with acute lymphoblastic leukemia (ALL). However, central nervous system (CNS) relapses frequently occur in patients with ALL who continuously receive anticancer drugs, including 6-MP, during remission maintenance therapy. ...

journal_title：Life sciences

authors： Deguchi Y,Yokoyama Y,Sakamoto T,Hayashi H,Naito T,Yamada S,Kimura R

更新日期：2000-01-01 00:00:00

abstract：:Effects of emodin (EMD) treatment on mitochondrial ATP generation capacity and antioxidant components as well as susceptibility to ischemia-reperfusion (I-R) injury were examined in male and female rat hearts. Isolated-perfused hearts prepared from female rats were less susceptible to I-R injury than those of male rat...

journal_title：Life sciences

authors： Du Y,Ko KM

更新日期：2005-10-14 00:00:00

abstract：AIMS:Ischemia/reperfusion injury (IRI), resulting from hypoxic damage within a graft, is the leading cause of cell death and graft rejection. In this study, we investigated whether a HIF-1α inhibitor or various antioxidants were able to prevent ischemic injury in a cellular model in which experimental hypoxia was induc...

journal_title：Life sciences

authors： Song H,Han IY,Kim Y,Kim YH,Choi IW,Seo SK,Jung SY,Park S,Kang MS

更新日期：2015-04-01 00:00:00