Flavonoids from the leaves of Diospyros kaki reduce hydrogen peroxide-induced injury of NG108-15 cells.

abstract：AIMS:Gastrointestinal cancers are a kind of deadly malignancy afflicting close to a million peoples worldwide. 5-Fluorouracil (5-Fu) is a main chemotherapeutic agent for cancer treatment. However, prolonged exposure of 5-Fu to cancer cells may cause chemoresistance and decrease the therapeutic potential of 5-Fu. MAIN ...

journal_title：Life sciences

authors： Zhu Y,Yi Y,Bai B,Li L,You T,Sun W,Yu Y

更新日期：2018-05-15 00:00:00

abstract：:Using a two-lever drug discrimination procedure, six rats were trained to discriminate 0.5 mg/kg of racemic 1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOI) from saline. Once trained, the animals demonstrated a dose-related decrease in discriminative performance upon administration of lower doses of DOI (ED50 = 0.1...

journal_title：Life sciences

authors： Glennon RA

更新日期：1986-09-01 00:00:00

abstract：:The reinforcing effects of cocaine and methylphenidate have been linked to their ability to block dopamine transporters (DAT). Though cocaine and methylphenidate have similar in vitro affinities for DAT the abuse of methylphenidate in humans is substantially lower than of cocaine. To test if differences in in vivo pot...

journal_title：Life sciences

authors： Volkow ND,Wang GJ,Fowler JS,Fischman M,Foltin R,Abumrad NN,Gatley SJ,Logan J,Wong C,Gifford A,Ding YS,Hitzemann R,Pappas N

更新日期：1999-01-01 00:00:00

abstract：:The present study was undertaken to examine whether there was a time-dependent change in the toxic effects of amikacin, an aminoglycoside, on renal functions. Male Wistar rats were maintained under conditions of light from 7 am to 7 pm and dark from 7 pm to 7 am. Amikacin (1.2 g/kg) was injected intraperitoneally to a...

journal_title：Life sciences

authors： Fujimura A,Sudoh T,Ebihara A

更新日期：1994-01-01 00:00:00

abstract：:The discovery and development of new drugs targeting voltage-gated ion channels are important for treating a variety of medical conditions and diseases. Ion channels are molecular nanostructures expressed ubiquitously throughout the whole body, and are involved in many basic physiological processes. Over the years, na...

journal_title：Life sciences

authors： de Araújo DA,Freitas C,Cruz JS

更新日期：2011-10-10 00:00:00

abstract：:We provide direct evidence that verapamil inhibits active digoxin secretion in renal tubular cells (LLC-PK1), and that verapamil increases cellular accumulation of digoxin. These findings suggest that verapamil inhibits the digoxin active secretory transport at the apical membranes, supporting the theory that P-glycop...

journal_title：Life sciences

authors： Ito S,Woodland C,Harper PA,Koren G

更新日期：1993-01-01 00:00:00

abstract：:It is known that K(ATP) channel openers inhibit the release and refilling of Ca(2+) from intracellular stores. The present study was designed to test the effects of levcromakalim in human umbilical artery (HUA) rings stimulated by serotonin (5-HT) and KCl in Ca-free medium. Umbilical cords were obtained at vaginal or ...

journal_title：Life sciences

authors： Tufan H,Ayan-Polat B,Tecder-Unal M,Polat G,Kayhan Z,Oğüş E

更新日期：2003-02-07 00:00:00

abstract：:Arginine vasotocin has been proposed as a hormone of the mammalian pineal gland. This claim is largely based on biological and immunological results, although some chemical evidence has also been provided. Yet, more and more researchers have recently disclaimed the presence of this nonapeptide in mammalian tissue. The...

journal_title：Life sciences

authors： Nieuwenhuis JJ

更新日期：1984-10-22 00:00:00

abstract：:Salicylate displaces phenytoin from protein binding leading to an increase in free phenytoin concentration. We observed unexpected decreases in free phenytoin concentration in the presence of salicylate. Serum pools containing no phenytoin or salicylate were supplemented with the same concentrations of phenytoin. Then...

journal_title：Life sciences

authors： Biddle DA,Wells A,Dasgupta A

更新日期：2000-01-01 00:00:00

abstract：:The concentration of epinephrine, norepinephrine, dopamine, met-enkephalin-, ACTH-, calcitonin- and somatostatin-like immunoreactivity (IR) were determined in the extracts of 9 adrenal pheochromocytomas from 7 patients. Six of these patients had Sipple's syndrome. There was a close correlation between the amounts of m...

journal_title：Life sciences

authors： Lamberts SW,Bons E,Oosterom R,Bruining H,de Greef WJ,Hackeng WH

更新日期：1984-07-23 00:00:00

abstract：:Glutathione homeostasis was investigated in unilaterally nephrectomized and sham-operated rats. Following twelve days of compensatory renal growth, it was found that the concentrations of glutathione and glutathione disulfide in representative samples of the entire remnant right kidney from the nephrectomized rats wer...

journal_title：Life sciences

authors： Zalups RK,Veltman JC

更新日期：1988-01-01 00:00:00

abstract：:The effects of glucagon-(1-21)-peptide on pancreatic exocrine secretion and plasma glucose levels were studied and compared with those of native glucagon in anesthetized dogs. Intravenous bolus administration of 1 nmol or 10 nmol/kg of glucagon-(1-21)-peptide evoked a significant inhibition of secretin-stimulated panc...

journal_title：Life sciences

authors： Itoh H,Matsuyama T,Namba M,Watanabe N,Komatsu R,Kono N,Tarui S

更新日期：1989-01-01 00:00:00

abstract：AIMS:The purpose of this study was to investigate mechanisms of chronic alcohol-induced cardiac remodeling and dysfunction. We also sought to determine the role of cardiac fibroblasts, which play a dynamic role in cardiac remodeling, in mediating these effects. MAIN METHODS:Adult male Wistar rats were exposed to ethan...

journal_title：Life sciences

authors： Mouton AJ,El Hajj EC,Ninh VK,Siggins RW,Gardner JD

更新日期：2020-03-15 00:00:00

abstract：UNLABELLED:The present study was conducted to examine whether melatonin impairs serotonin (5HT) release and uptake in rat platelets. Exposure of platelet-rich plasma samples (PRP) to melatonin induced a concentration-dependent inhibition of 5HT uptake and the value of IC50 was 1.3 x 10(-3) M. We have also investigated ...

journal_title：Life sciences

authors： Martín FJ,Atienza G,Aldegunde M,Míguez JM

更新日期：1993-01-01 00:00:00

abstract：AIMS:The prognoses of patients with gastric cancer(GC) vary in different stages, which is mainly due to the great differences in tumor and tumor microenvironment. This study is aimed to explore the specific differences. MAIN METHODS:Based on RNAseq-based expression data from The Cancer Genome Atlas database and GSE154...

journal_title：Life sciences

authors： Wan L,Tan N,Zhang N,Xie X

更新日期：2020-11-15 00:00:00

abstract：:The cellular electrophysiology of left ventricular preparations from guinea pig hearts was studied 1 hour, 24 hours, and 4-6 weeks after myocardial infarction produced by 6-8 single ties of the distal left coronary artery system or after sham operation. Microelectrode recordings were used to monitor cells from the end...

journal_title：Life sciences

authors： Gaide MS,Cameron JS,Altman CB,Myerburg RJ,Bassett AL

更新日期：1985-06-24 00:00:00

abstract：:Tardive dyskinesia (TD) is a serious side-effect of neuroleptic treatment. In order to describe and analyse more thoroughly the rat model of TD, the behavior of the rats during cage testing was studied after acute and during long-term haloperidol (HAL) treatment. Rats were injected with HAL i.p. in an acute experiment...

journal_title：Life sciences

authors： Andreassen OA,Jørgensen HA

更新日期：1995-01-01 00:00:00

abstract：:In both normal and hypophysectomized rats, electroconvulsive shock (ECS) produced a significant postictal rise in seizure threshold (S.T.) to flurothyl, a volatile convulsant. This ECS-induced increase in S.T. was markedly attenuated by naloxone (10 mg/kg s.c.), which itself did not alter basal S.T. A dose of bicucull...

journal_title：Life sciences

authors： Tortella FC,Cowan A

更新日期：1982-11-15 00:00:00

abstract：AIMS:We performed a systematic review and meta-analysis on the effect of HIV infection and antiretroviral therapy (ART) on carotid intima-media thickness (cIMT) to elucidate the role of HIV infection and ART. Also, an analysis on the role of ethnicity and gender on cIMT in HIV-infected populations was performed. MAIN ...

journal_title：Life sciences

authors： Msoka TF,Van Guilder GP,van Furth M,Smulders Y,Meek SJ,Bartlett JA,Vissoci JRN,van Agtmael MA

更新日期：2019-10-15 00:00:00

abstract：:Previous research in this laboratory has shown that chronic treatment of adult male rats with an anabolic-androgenic steroid (AAS) produced anxiolytic behavior and increased the functional response of cortical gamma-aminobutyric acid(A) (GABA(A)) receptors. The experiments reported here were aimed at further character...

journal_title：Life sciences

authors： Bitran D,Hilvers RJ,Frye CA,Erskine MS

更新日期：1996-01-01 00:00:00

abstract：:Administration of a high dose of hydrocortisone hemisuccinate sodium (0.25 mumol/egg) to 15-day-old fertilized hen's eggs caused accumulation of biliverdin in the embryonic liver. The responses were 10 to 20-fold higher than controls within 48 hr as a result of stimulation of biliverdin synthesis in the liver and the ...

journal_title：Life sciences

authors： Nishigori H,Ishida O,Ogihara-Umeda I

更新日期：1993-01-01 00:00:00

abstract：:Plasma opioid levels were determined in 9 obese non-diabetic subjects, their 8 age matched controls, and in 29 diabetic patients; 10 maintained on diet alone, 6 on an oral hypoglycemic agent (chlorpropamide) and 13 treated with insulin. Five age matched controls for the diabetic groups were also studied for comparison...

journal_title：Life sciences

authors： Awoke S,Voyles NR,Bhathena SJ,Tanenberg RJ,Recant L

更新日期：1984-05-21 00:00:00

abstract：:The infection epidemic event of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was formally declared a pandemic by World Health Organization on March 11th, 2020. Corona Virus Disease 2019 (COVID-19) is caused by SARS-CoV-2, a new type of coronavirus, which has high contagion and mainly causes respira...

journal_title：Life sciences

authors： Peng W,Wu H,Tan Y,Li M,Yang D,Li S

更新日期：2020-12-01 00:00:00

abstract：:The biochemical changes of the elements of cholinergic neurotransmission (choline acetyltransferase, ChAT; acetylcholinesterase, AChE; butyrylcholinesterase, BuChE; and muscarinic cholinergic receptors, mAChR) as well as the electrolyte content were studied in ischemic lumbar spinal cord segments of newborn pigs. Isch...

journal_title：Life sciences

authors： Tekulics P,Rakonczay Z,Szerdahelyi P,Kása P,Gulya K

更新日期：1990-01-01 00:00:00

abstract：:Effects of PK 11195 and flumazenil on cardiac responses to diazepam, clonazepam and zolpidem were compared. Coronary flow rate was increased at relatively low doses of diazepam and decreased at higher doses. Clonazepam induced a dose-dependent increase, and zolpidem a decrease of coronary flow rate. PK 11195 reduced t...

journal_title：Life sciences

authors： Zeegers A,van Wilgenburg H,Leeuwin RS

更新日期：1998-01-01 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：:In vitro studies showed that organophosphate insecticides have different IC50 values (i.e., concentration of inhibitor required to inhibit 50% enzyme activity) for acetylcholinesterases (AChE's) from different species. Since previous reports indicated that the binding of active cholinesterase inhibitors to non-critica...

journal_title：Life sciences

authors： Wang C,Murphy SD

更新日期：1982-07-12 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：:Several recent reports indicate that patients with Huntington's Disease (HD) may manifest membrane abnormalities in a wide variety of cells including peripheral blood lymphocytes. In this study, flow cytometry is used in conjunction with the fluorescent membrane probe, 8-anilino-1-naphthalene sulfonate (ANS), to exami...

journal_title：Life sciences

authors： Gollin SM,Leary JF,Shoulson I,Doherty RA

更新日期：1985-02-18 00:00:00

abstract：:Macrophages and other host cells activated by interferon-gamma (IFN-gamma) can be induced to form a flavoprotein that converts L-arginine to nitric oxide+L-citrulline. Nitric oxide causes efflux of non-heme iron from neoplastic and infected host cells. In the absence of L-arginine, IFN-gamma-induced infected cells can...

journal_title：Life sciences

authors： Weinberg ED

更新日期：1992-01-01 00:00:00