Atypical responses to morphine in mice: a possible relationship to anorexia nervosa?

abstract：:The cholinergic neurotransmission has been implicated in various forms of neural plasticity such as kindling and learning. The present study examined the effects of scopolamine, a muscarinic cholinergic antagonist, on the development of behavioral sensitization to methamphetamine (MA). Rats treated with MA (1 mg/kg, s...

journal_title：Life sciences

authors： Ohmori T,Abekawa T,Koyama T

更新日期：1995-01-01 00:00:00

abstract：:Leukemias are a heterogenous group of diseases characterized by uncontrolled proliferation of abnormal blood cells of hematopoietic system. Evodiamine, a characteristic alkaloid extracted from Evodia fruits, has been reported to exhibit inhibitory effect on cell proliferation and migration in several types of cancer c...

journal_title：Life sciences

authors： Huang YC,Guh JH,Teng CM

更新日期：2004-05-21 00:00:00

abstract：:Male, adult mice of the Binghamton heterogeneous stock received one of two doses of ethanol (1.0 g/kg or 2.0 g/kg in saline) alone or in combination with the calcium (Ca2+) slow channel blocker, verapamil (5.45 mg/kg in 25% v/v ethanol in saline). Hypothermic responses and motor incoordination were assessed in terms o...

journal_title：Life sciences

authors： Johnston JE,Draski LJ,Molina JC,Burright RG,Reynoso G,Calendrillo BA,Isaacson RL

更新日期：1986-12-01 00:00:00

abstract：:This study was designed to determine whether the increase in atriopeptin secretion induced by an intravenous infusion of norepinephrine is mediated directly by adrenergic receptor stimulation or indirectly by the associated increase in atrial pressure. Norepinephrine was infused at 0.5 microgram.kg-1.min-1 for 30 min ...

journal_title：Life sciences

authors： Zhu JL,Leadley RJ Jr,Geer PG,Wang BC,Goetz KL

更新日期：1990-01-01 00:00:00

abstract：:The role of Na+ and Ca2+ channels in glutamate-mediated hypoxic injury was investigated in slices of the rat cerebral cortex. Hypoxic injury was determined by mitochondrial reduction of 3-(4,5-dimethyl-2-thiazol)-2,5-diphenyltetrazolium bromide after exposure of brain slices to 30-min of hypoxia/glucose deprivation fo...

journal_title：Life sciences

authors： Oka M,Itoh Y,Ukai Y

更新日期：2000-09-29 00:00:00

abstract：:A 21 amino acid peptide containing the prepropendothelin sequence from amino acids 110 to 130 and two intrachain disulfide bonds was synthesized and tested for biological activity in the following endothelin assays: 1.) a competition binding assay using [125I]ET-1 and dog heart membranes, 2.) three RIA's using 125I-ET...

journal_title：Life sciences

authors： Cade C,Lumma WC Jr,Mohan R,Rubanyi GM,Parker-Botelho LH

更新日期：1990-01-01 00:00:00

abstract：:Dehydroepiandrosterone (DHEA), an adrenal steroid of no known biological function, is a potent inhibitor of mammalian glucose-6-phosphate dehydrogenase (G6PDH). DHEA inhibited the growth of two stains of HeLa and WI-38 cells in culture. One of the HeLa strains, TCRC-2, was about 10x as sensitive to growth inhibition a...

journal_title：Life sciences

authors： Dworkin CR,Gorman SD,Pashko LL,Cristofalo VJ,Schwartz AG

更新日期：1986-04-21 00:00:00

abstract：:In saturation binding experiments, (+)pentazocine, (+)3-(3-hydroxyphenyl)-N-propylpiperidine (3-PPP), haloperidol and rimcazole did not inhibit the binding of [3H]DTG in a purely competitive fashion. Although Scatchard analysis indicated that [3H]DTG bound to a single site, the inhibition curves of some, but not all, ...

journal_title：Life sciences

authors： DeHaven-Hudkins DL,Fleissner LC

更新日期：1992-01-01 00:00:00

abstract：:In murine splenocytes, a primary antigen-specific antibody response is stimulated by 2-O-alpha-D-glucopyranosyl-L-ascorbic acid (AA-2G), a stable form of ascorbate, as described in our previous paper. We examined here the effect of nerve growth factor (NGF) on the antigen-specific antibody production in vitro augmente...

journal_title：Life sciences

authors： Yanagida M,Gohda E,Yamamoto I

更新日期：1996-01-01 00:00:00

abstract：:Mutations that increase constitutive activity and alter ligand binding have been used to investigate the structure and mechanism of activation of muscarinic receptors. These data are reviewed with reference to the recently published three-dimensional structure of rhodopsin. Residues in TM3 and TM6 where amino acid sub...

journal_title：Life sciences

authors： Spalding TA,Burstein ES

更新日期：2001-04-27 00:00:00

abstract：:Aging exerts profound influences on the function of the hypothalamic-pituitary-testicular-axis. This work has been performed in order to verify whether, in male rats, the decreased secretion of LH and testosterone (T) occurring in old animals is reflected by modifications of luteinizing hormone-releasing hormone (LHRH...

journal_title：Life sciences

authors： Limonta P,Dondi D,Maggi R,Martini L,Piva F

更新日期：1988-01-01 00:00:00

abstract：:Lesions of the serotonergic afferents to the hippocampus, by fimbrial transection or by 5,7-dihydroxytryptamine treatment, produce an increase in the Bmax of [3H]WB4101 to its nanomolar affinity binding site, with no effect on its picomolar affinity binding site or on [3H]prazosin binding. The nanomolar site is seroto...

journal_title：Life sciences

authors： Morrow AL,Norman AB,Battaglia G,Loy R,Creese I

更新日期：1985-11-18 00:00:00

abstract：:Using a specific radioimmunoassay, we measured concentrations of plasma 7B2 (a novel pituitary polypeptide) immunoreactivity (7B2-IR) in normal human subjects, patients with chronic renal failure and those with liver cirrhosis. Mean (+/- SEM) values of plasma 7B2-IR in normal healthy men and women were 55.8 +/- 1.2 pg...

journal_title：Life sciences

authors： Natori S,Iguchi H,Nawata H,Kato K,Ibayashi H,Chrétian M

更新日期：1987-08-24 00:00:00

abstract：:[3H]-Spiroperidol specifically binds at sites in human prefrontal cortex. The binding of this ligand is apparently anomalous at 37 degrees C, with a substantial loss of specific binding occurring between 5 and 40 min incubation. However, at 21 degrees C, this loss of binding is not observed even at 60 min. At 21 degre...

journal_title：Life sciences

authors： Andorn AC,Huang EH,Warren AE

更新日期：1984-06-18 00:00:00

abstract：:Adenylate cyclase activity in isolated rat liver plasma membranes was inhibited by NADH in a concentration-dependent manner. Half-maximal inhibition of adenylate cyclase was observed at 120 microM concentration of NADH. The effect of NADH was specific since adenylate cyclase activity was not altered by NAD+, NADP+, NA...

journal_title：Life sciences

authors： Nair BG,Patel TB

更新日期：1991-01-01 00:00:00

abstract：:Nitric oxide (NO) plays a critical role in the pathogenesis of endotoxin-induced uveitis (EIU). Since NO is a labile free radical, it is difficult to examine the dynamics of NO directly in vivo. In this study, we established a system for direct monitoring of the dynamics of NO and partial pressure of oxygen (pO(2)) in...

journal_title：Life sciences

authors： Yomura Y,Shoji Y,Asai D,Murakami E,Ueno S,Nakashima H

更新日期：2007-03-27 00:00:00

abstract：:In this study, we determined the expression of protein kinase C (PKC) isoforms during pregnancy. At pregnant duration, PKC alpha was down-modulated in the deciduomata but not in the myometrium. Down-modulation was compatible with the increase in cell mitosis, which reached a maximum at 8-9 days. On the other hand, PKC...

journal_title：Life sciences

authors： Shyu JC,Hsieh YS,Chang CL,Tsai CC,Liu HC,Chang AC,Yang LC,Lin LY,Liu JY

更新日期：1999-01-01 00:00:00

abstract：:In acute coronary syndromes such as unstable angina and myocardial infarction, serum concentration of brain natriuretic peptide, a cardiac hormone with potent vasodilatatory, natriuretic and diuretic activities, is elevated. Little is known about the effect of elevated BNP plasma concentration on free radical-mediated...

journal_title：Life sciences

authors： Garlichs CD,Zhang H,Schmeisser A,Daniel WG

更新日期：1999-01-01 00:00:00

abstract：:Both in men and rats, most of the ethanol ingested at a low dose is metabolized before it reaches the systemic circulation. Oxidation of ethanol (mainly in the stomach) accounts for the bulk of this effect. This "first pass" metabolism (FPM) may be viewed as a barrier which protects against the systemic toxicity of et...

journal_title：Life sciences

authors： Julkunen RJ,Di Padova C,Lieber CS

更新日期：1985-08-12 00:00:00

abstract：:Aberrant methylation of promoter CpG islands (CGIs) can inactivate the expression of many tumor suppressor genes and play an important role in the carcinogenesis of gastric cancer. The tumor suppressor gene RB1, which encodes a cell cycle regulator, is hypermethylated and downregulated in multiple kinds of cancer. Act...

journal_title：Life sciences

authors： Cao D,Jia Z,Wu Y,Su T,Zhao D,Wu M,Tsukamoto T,Oshima M,Jiang J,Cao X

更新日期：2020-12-15 00:00:00

abstract：:The metabolism of haloperidol (HP) to the potentially neurotoxic pyridinium species, HPP+ and RHPP+, has been demonstrated in humans. In vitro studies in microsomes harvested from various animal species indicate that the tetrahydropyridines, HPTP and RHPTP, could be intermediates in this pathway. However, this has not...

journal_title：Life sciences

authors： Avent KM,Riker RR,Fraser GL,Van der Schyf CJ,Usuki E,Pond SM

更新日期：1997-01-01 00:00:00

abstract：:Ro41-0960 is a potent, fluorine containing COMT inhibitor which has be en reported to cross the blood brain barrier and to inhibit COMT in the brain. It is structurally similar to Ro40-7592 which is currently undergoing clinical trials in Parkinson's disease. Positron emission tomographic (PET) studies in baboon using...

journal_title：Life sciences

authors： Ding YS,Gatley SJ,Fowler JS,Chen R,Volkow ND,Logan J,Shea CE,Sugano Y,Koomen J

更新日期：1996-01-01 00:00:00

abstract：:A radioreceptor assay using [3H]nitrendipine and rat cerebral cortical membranes, in conjunction with equilibrium dialysis, measures the unbound (free) level of nitrendipine in human sera. The sensitivity of the assay is 0.1-0.2 picomoles/ml and is linear from 4 X 10(-11) to 4 X 10(-9) M nitrendipine. Other dihydropyr...

journal_title：Life sciences

authors： Lee HR,Roeske WR,Yamamura HI

更新日期：1983-10-31 00:00:00

abstract：:An increase in the weight of the thyroid gland, accompanied by reductions in uptake and release of 1311, serum T3 and reverse T3 concentrations and an increase in serum TSH concentration, occurs during the development of renal hypertension in rats. Renal function, as assessed by BUN, serum and urinary creatinine conce...

journal_title：Life sciences

authors： Fregly MJ,Threatte RM

更新日期：1982-02-15 00:00:00

abstract：:The effect of endothelin (END) on the release of atrial natriuretic peptides (ANP) was studied in isolated rat atria and in conscious rats. END stimulates the ANP release in vitro in a dose-dependent manner. An increase in ANP plasma levels and cyclic GMP plasma levels was also observed in conscious rats after injecti...

journal_title：Life sciences

authors： Stasch JP,Hirth-Dietrich C,Kazda S,Neuser D

更新日期：1989-01-01 00:00:00

abstract：:Two breeds of rats, Charles River Wistar [Crl(Wi)Br.] and HSD Wistar [Wistar per LATI (Budapest) Br.], with remarkable difference in learning performance were selected. The rats were trained in the shuttle box with 100 trials per day and the number of conditioned avoidance responses (CARs), the escape failures (EFs) t...

journal_title：Life sciences

authors： Knoll J,Knoll B,Miklya I

更新日期：1996-01-01 00:00:00

abstract：AIMS:Solid lipid nanoparticles (SLNs) conjugated with surface 83-14 monoclonal antibody (8314MAb) and anti-epithelial growth factor receptor (AEGFR) were synthesized and applied to permeate the blood-brain barrier (BBB) and inhibit the growth of glioblastoma multiforme (GBM). MAIN METHODS:8314MAb and AEGFR were crossl...

journal_title：Life sciences

authors： Kuo YC,Lee CH

更新日期：2016-02-01 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

authors： Pettengill OS,Bacopoulos NG,Sorenson GD

更新日期：1982-04-19 00:00:00

abstract：AIMS:TRAF6 is an intracellular signal adapter molecule plays a significant role in tumor development. However, the specific mechanism causes and promotes of colorectal cancer keep largely unknown. Therefore, we sought to investigate the roles and the molecular mechanisms of TRAF6 in regulation colorectal cancer. MATER...

journal_title：Life sciences

authors： Zhu G,Cheng Z,Huang Y,Zheng W,Yang S,Lin C,Ye J

更新日期：2019-10-15 00:00:00

abstract：:The induction of aldose reductase (AR) mRNA expression and its activity by glucose were investigated in fetal rat aortic smooth muscle (A10) cells. The increase in the expression of AR mRNA was observed at 6 h, and reached a maximum (2.3 fold) at 12 h after exposure to 80 mM glucose. On the other hand, increase in AR ...

journal_title：Life sciences

authors： Tawata M,Ohtaka M,Hosaka Y,Onaya T

更新日期：1992-01-01 00:00:00