Regulatory mechanisms of choline production.

abstract：:A review of the rapidly accumulating data in the literature continues to support the notion that catecholamines regulate ovarian function, and extends the complexity of catecholaminergic effects on the ovary via interactions with pituitary and adrenal hormones. It is clear that catecholamines affect growth and differe...

journal_title：Life sciences

authors： Spicer LJ

更新日期：1986-11-10 00:00:00

abstract：:The drug transporter, multidrug resistance-associated protein 2 (ABCC2/Mrp2), is known to play important roles in excretion of various drugs. In the present study, we investigated whether Mrp2 is involved in the transport of micafungin, a newly developed antifungal agent. When Sprague-Dawley rats received an intraveno...

journal_title：Life sciences

authors： Abe F,Ueyama J,Kimata A,Kato M,Hayashi T,Nadai M,Saito H,Takeyama N,Noguchi H,Hasegawa T

更新日期：2008-08-15 00:00:00

abstract：AIMS:Rg1 is the most active component of traditional Chinese medicine ginseng, having anti-aging and anti-oxidative stress features in multiple organs. Cellular senescence of hepatocytes is involved in the progression of a wide spectrum of chronic liver diseases. In this study, we investigated the potential benefits an...

journal_title：Life sciences

authors： Qi R,Jiang R,Xiao H,Wang Z,He S,Wang L,Wang Y

更新日期：2020-08-01 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 regulation of G protein-coupled receptor expression is important in the physiology of an organism and can occur at any of the steps between gene transcription to turnover of the receptor protein itself. Agonist stimulation causes receptor desensitization, which is characterized by a rapid reduction in response to ...

journal_title：Life sciences

authors： Heck DA,Bylund DB

更新日期：1998-01-01 00:00:00

abstract：:To examine the therapeutic effect of 4-(o-benzylphenoxy)-N-methylbutylamine hydrochloride (bifemelane) on neuronal ischemia-reperfusion injury, we evaluated the neurological score in gerbils subjected to unilateral common carotid occlusion. Using the neurological score method, we selected animals which showed stroke s...

journal_title：Life sciences

authors： Hata R,Matsumoto M,Kitagawa K,Tagaya M,Matsuyama T,Sugita M,Kamada T

更新日期：1995-01-01 00:00:00

abstract：:Since many patients complain about halitosis without there being any clinical evidence of its cause, psychological symptoms have been pointed out as halitosis-inducing factors. The aim of this study was to evaluate the influence of anxiety on the production of volatile sulfur compounds (VSC). Seventeen undergraduate m...

journal_title：Life sciences

authors： Calil CM,Marcondes FK

更新日期：2006-07-10 00:00:00

abstract：:Intravenous (i.v.) or intrarenal arterial (i.r.a.) injection of big endothelin-1 (big ET-1) (1.6 nmol/kg) in anesthetized rats produced a significant increase in mean arterial pressure (MAP), a decrease in renal blood flow (RBF) and an increase in renal vascular resistance (RVR). Although the pressor responses to big ...

journal_title：Life sciences

authors： Fujita K,Matsumura Y,Kita S,Hisaki K,Takaoka M,Morimoto S

更新日期：1994-01-01 00:00:00

abstract：:Diazepam binding inhibitor (DBI) is a 9-kD polypeptide that was first isolated in 1983 from rat brain by monitoring its ability to displace diazepam from the benzodiazepine (BZD) recognition site located on the extracellular domain of the type A receptor for gamma-aminobutyric acid (GABAA receptor) and from the mitoch...

journal_title：Life sciences

authors： Costa E,Guidotti A

更新日期：1991-01-01 00:00:00

abstract：AIMS:Histone modifications play central epigenetic roles in regulating the entire genome of the cell and cell proliferation. Herein, we investigated the effects of the natural compound, 16-hydroxycleroda-3,13-dien-15,16-olide (PL3), on the expressions of histone-modifying enzymes, and examined how it induces apoptosis ...

journal_title：Life sciences

authors： Lin YH,Lee CC,Chang FR,Chang WH,Wu YC,Chang JG

更新日期：2011-12-05 00:00:00

abstract：:Autophagy is considered as an important intracellular mechanism that degrades cytoplasmic components to furnish additional energy. It has cytoprotective effects through the degradation of intracellular pathogens, damaged organelles, and protein aggregates. On the other hand, there are reports of an association between...

journal_title：Life sciences

authors： Karami J,Masoumi M,Khorramdelazad H,Bashiri H,Darvishi P,Sereshki HA,Shekarabi M,Sahebkar A

更新日期：2020-08-01 00:00:00

abstract：:A variety of chromatographic approaches are detailed for enhancement of signal and selectivity for determination of biogenic amines by HPLC with amperometric detection. Microbore HPLC columns offer significant signal enhancement due to the reduced elution volume. Selection of novel surfactants such as N-methyl oleoyl ...

journal_title：Life sciences

authors： Mefford IN

更新日期：1987-08-17 00:00:00

abstract：:1-Aminocyclopropane carboxylic acid (ACPC), a partial agonist of the glycine site on the NMDA receptor, prevents tolerance to the mu opioid morphine and the delta ligand [D-Pen2,D-Pen5]enkephalin (DPDPE) when co-administered with the opioid. In contrast, ACPC does not significantly influence tolerance to the kappa1 op...

journal_title：Life sciences

authors： Kolesnikov YA,Maccechini ML,Pasternak GW

更新日期：1994-01-01 00:00:00

abstract：:Increased ventricular ANF-mRNA is observed as a compensating mechanism in response to many forms of overload including chronic exercise. It is unknown if exercise-induced increases in ANF expression are mediated at the transcriptional level and whether specific cis-element(s) may be involved. To study this, rats were ...

journal_title：Life sciences

authors： Edwards JG

更新日期：2002-04-26 00:00:00

abstract：:Convulsive seizures are a potential side effect of antidepressant drug treatment and can be produced by all classes of antidepressants. It is also known that some convulsant and anticonvulsant drug actions are mediated by the GABA-receptor chloride-ionophore complex. Drugs acting at this complex appear to induce convu...

journal_title：Life sciences

authors： Malatynska E,Knapp RJ,Ikeda M,Yamamura HI

更新日期：1988-01-01 00:00:00

abstract：:To assess the effect of pharmacological dose of melatonin on bone metabolism in ovariectomized rats, urinary deoxypyridinoline (a marker of bone resorption) and calcium excretion, circulating levels of calcium, phosphorus and bone alkaline phosphatase activity (a marker of bone formation), and bone mineral density (BM...

journal_title：Life sciences

authors： Ladizesky MG,Cutrera RA,Boggio V,Somoza J,Centrella JM,Mautalen C,Cardinali DP

更新日期：2001-12-21 00:00:00

abstract：:To determine whether rat retinal photoreceptor cells produce inhibin, a molecule closely related to activin, a multifunctional growth factor in the transforming growth factor beta superfamily (TGF beta), we have conducted immunohistochemistry using specific antibodies for inhibin which were raised against a synthetic ...

journal_title：Life sciences

authors： Ying SY,Li SQ,Zhang Z

更新日期：1995-01-01 00:00:00

abstract：:The effects of porcine uterine fluid filtrate (PUF) on lymphocyte activity were examined. PUF was added to porcine lymphocyte cultures in the presence or absence of phytohemagglutinin (PHA), concanavalin A (Con A), or pokeweed mitogen (PWM). Lymphocyte response was determined by 3H-thymidine incorporation. Results ind...

journal_title：Life sciences

authors： Li WI,Yang WC

更新日期：1993-01-01 00:00:00

abstract：:The purpose of this study was to characterize behavioral interactions between glutamatergic and serotonergic 5-HT2 receptors. Both competitive (AP-5 [D-2-amino-5-phosphovalerate] and D-CPP [3-(2carboxypiperazine-4yl)-propylphosphonate]) and noncompetitive (MK-801 [dizocilpine], ketamine, dextrorphan and dextromethorph...

journal_title：Life sciences

authors： Kim HS,Park IS,Park WK

更新日期：1998-01-01 00:00:00

abstract：AIM:MicroRNAs (miRNAs) function as oncogenes or tumor suppressors in an extensive variety of human cancers, including prostate cancer (PCa). Herein, the aim of this study is to investigate the effect of miR-381 on autophagy and apoptosis of PCa cells through the reelin (RELN)-mediated the PI3K/AKT/mTOR signaling pathwa...

journal_title：Life sciences

authors： Liao W,Zhang Y

更新日期：2020-08-01 00:00:00

abstract：AIMS:We evaluated if selected pro-inflammatory cytokines and/or the protein suppressor of cytokine signaling 3 (SOCS-3) could account for decreased insulin-stimulated phosphatidylinositol 3-kinase (PI3-K) activity in the skeletal muscle of the obese Zucker rat. MAIN METHODS:Eight lean and eight obese Zucker rats ~4wee...

journal_title：Life sciences

authors： Zolotnik IA,Figueroa TY,Yaspelkis BB 3rd

更新日期：2012-10-22 00:00:00

abstract：:Unconjugated bilirubin (UCB), like trifluoperazine (TFP), dibucaine (DBC) and praziquantel (PZQ), induces erythrocyte morphological changes, lysis and lipid exfoliation. In the present study we determined whether TFP, DBC and PZQ toxicity to erythrocytes was potentiated or reverted by UCB. Human erythrocytes were eith...

journal_title：Life sciences

authors： Brito MA,Malheiros SV,Meirelles NC,Brites D

更新日期：2001-07-13 00:00:00

abstract：:Neuroblastoma x glioma hybrid cells NG 108-15 were chronically treated with opioid agonists and tested for their development of "tolerance" as evaluated by the loss of inhibitory activity of opioids upon cAMP-accumulation. Desensitization was dose-dependent and non-competitive and highly selective, since the activity ...

journal_title：Life sciences

authors： Wüster M,Costa T,Gramsch C

更新日期：1983-01-01 00:00:00

abstract：AIMS:The clinical utilization of the combinations of all-trans-retinoic acid (RA) with antiestrogens, which present synergism of action in breast cancer, has been limited by RA adverse effects, including hepatotoxicity, which may be related with mitochondrial damage. This work evaluated the effects of RA alone and in c...

journal_title：Life sciences

authors： Ribeiro MP,Santos AE,Santos MS,Custódio JB

更新日期：2013-07-30 00:00:00

abstract：AIMS:We herein investigated the inducibility of cytochrome P450 1A1 (CYP1A1) by Δ(9)-tetrahydrocannabinol, cannabidiol (CBD), and cannabinol, three major phytocannabinoids, using human hepatoma HepG2 cells. MAIN METHODS:The expression of CYP1A1 and the aryl hydrocarbon receptor (AhR) was measured by a quantitative rea...

journal_title：Life sciences

authors： Yamaori S,Kinugasa Y,Jiang R,Takeda S,Yamamoto I,Watanabe K

更新日期：2015-09-01 00:00:00

abstract：:Ocimum sanctum, the Indian holy basil, has significant ability to scavenge highly reactive free radicals. Shade dried leaf powder of the plant was extracted with water and alcohol, and then fractionated with different solvents. Both extracts and their fractions have in vitro anti-lipidperoxidative activity at very low...

journal_title：Life sciences

authors： Geetha RK,Vasudevan DM

更新日期：2004-11-19 00:00:00

abstract：:Castration increases the central nervous system (CNS) sensitivity to hexobarbital as measured by an EEG-threshold method. Testosterone treatment in doses from 1 to 5 mg/kg/day decreases CNS-sensitivity and restores threshold values in castrated rats to a level found in normal young adult male rats. ...

journal_title：Life sciences

authors： Bolander HG,Kourtopoulos H

更新日期：1985-03-11 00:00:00

abstract：AIMS:Centella asiatica has been used to treat kidney diseases in Chinese traditional medicine. Asiaticoside (an extraction of C. asiatica) exerts a variety of pharmacological effects including immunomodulatory and anti-inflammatory functions. However, the mechanism of asiaticoside in the treatment of renal diseases rem...

journal_title：Life sciences

authors： Wang Z,Liu J,Sun W

更新日期：2013-09-03 00:00:00

abstract：:In 6-[18F]fluoro-L-dopa (Fdopa)/positron emission tomography (PET) studies, carbidopa pretreatment increases the Fdopa bioavailability to the brain and enhances the intensity of striatal PET images. Different PET research teams have used various carbidopa doses and routes of administration in non-human primate studies...

journal_title：Life sciences

authors： Chan GL,Doudet DJ,Dobko T,Hewitt KA,Schofield P,Pate BD,Ruth TJ

更新日期：1995-01-01 00:00:00

abstract：:We investigated the inhibition of human cholinesterases by galanthamine, an alkaloid of the common snowdrop (galanthus nivalis). In vitro, the compound showed potent enzyme inhibition and 50-fold selectivity for acetylcholinesterase (EC 3.1.1.7) as opposed to butyrylcholinesterase (EC 3.1.1.8). There was no difference...

journal_title：Life sciences

authors： Thomsen T,Kewitz H

更新日期：1990-01-01 00:00:00