Antioxidant, a pro-oxidant and cytotoxic effects of Achyrocline satureioides extracts.

abstract：:Since moderate hyperhomocysteinemia is an independent risk factor for vascular disease by mean of its oxidant effect and glutathione plays a main role as intracellular redox-regulating agent, we have studied for the first time the total intracellular content of homocysteine in aging. Plasma homocysteine concentration,...

journal_title：Life sciences

authors： Hernanz A,Fernández-Vivancos E,Montiel C,Vazquez JJ,Arnalich F

更新日期：2000-08-04 00:00:00

abstract：:Using absorption spectroscopy we have found that metallothionein I at concentrations as low as 1 microM reduces ferricytochrome c. This reduction is more potent than that of another abundant intracellular thiol, glutathione. Also, oxidation of ferricytochrome c which had been reduced by metallothionein I occurs more s...

journal_title：Life sciences

authors： Simpkins C,Eudaric P,Torrence C,Yang Z

更新日期：1993-01-01 00:00:00

abstract：:TNF production has been studied in peritoneal macrophages and splenic T cells of Arctic Yakutian ground squirrel (Citellus Undulatus Pallas) in hibernating and awake animals in winter and in prehibernating autumn as well as in active euthermic spring-summer animals. A high level of TNF production in macrophages of gro...

journal_title：Life sciences

authors： Novoselova EG,Kolaeva SG,Makar VR,Agaphonova TA

更新日期：2000-01-01 00:00:00

abstract：:The relative distribution of muscarinic and nicotinic cholinergic receptors labeled with [3H]acetylcholine was determined using autoradiography. [3H]Acetylcholine binding to high affinity muscarinic receptors was similar to what has been described for an M-2 distribution: highest levels of binding occurred in the pont...

journal_title：Life sciences

authors： Schwartz RD

更新日期：1986-06-09 00:00:00

abstract：:This study examined the protective effect of phenobarbital on kainic acid-induced deficits in acquisition learning. A single kainic acid injection (9 mg/kg i.p.) was administered five days prior to testing using the Morris water maze test. Kainic acid produced deficits in the acquisition of spatial information observe...

journal_title：Life sciences

authors： Brown-Croyts LM,Caton PW,Radecki DT,McPherson SL

更新日期：2000-06-30 00:00:00

abstract：:The uptake and acetylation of [3H]-choline, as well as the calcium-dependent release of a newly synthesized [3H]-ACh, was studied in a new rat atrial mince preparation. The hemicholinium-3-sensitive uptake and acetylation of [3H]-choline increased as [3H]-choline concentrations were elevated to 100 microM in atrial mi...

journal_title：Life sciences

authors： Meyer EM,Baker SP

更新日期：1986-10-13 00:00:00

abstract：:This study was designed to evaluate the synergistic cytotoxicity of herb prescription, Palgin, in adriamycin-treated cancer cells. The combination of Palgin and adriamycin synergistically augmented the cytotoxicity of Chang and HL-60 cells, but not in Hep3B and Alexander cells. The cytotoxicity of two drugs was reveal...

journal_title：Life sciences

authors： Lim YS,So HS,Kim MS,Moon G,Won JH,Baek SW,Moon SR,Yang SH,Kim BJ,Ko CB,Park R

更新日期：2002-10-04 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：:Ancylostoma ceylanicum, the human hookworm parasite, exhibited significant secretion of cholinesterase when maintained in vitro in RPMI-1640 medium. Secretion of the enzyme was linear up-to 4 hours of incubation. About 40 percent of the total cholinesterase activity was localized in the soluble fraction, while remaini...

journal_title：Life sciences

authors： Tekwani BL

更新日期：1992-01-01 00:00:00

abstract：:The effect on thermonociceptive threshold of intrathecally (i.t.) administered angiotensin II (Ang II) was assessed in the rat tail-flick test. Rats were pretreated, 15 min earlier, with i.t. naloxone (opiate antagonist), losartan (Ang II selective antagonist at AT1 receptor) or [Sar1, Leu8] Ang II (non selective Ang ...

journal_title：Life sciences

authors： Toma N,Sgambato V,Couture R

更新日期：1997-01-01 00:00:00

abstract：:"Bath salts" is one street name for a family of synthetic cathinones that display pharmacological effects resembling cocaine and commonly abused amphetamines. Despite extensive legislation aimed at the criminalization of bath salts, several designer cathinones are gaining a foothold in the illicit drug scene; for exam...

journal_title：Life sciences

authors： Gregg RA,Rawls SM

更新日期：2014-02-27 00:00:00

abstract：:The effects of tetrandrine (TET) on the contractile responses of rat aortic rings and perfused rat mesenteric arteries to phenylephrine (PE) were investigated. TET inhibited the maximal contraction to PE in a concentration-dependent manner. TET significantly inhibited the transient contraction in Ca(2+)-free medium pr...

journal_title：Life sciences

authors： Kwan CY,Chen YY,Ma MF,Daniel EE,Hui SC

更新日期：1996-01-01 00:00:00

abstract：:The bradykinin-induced sensitization of cutaneous nociceptors to heat was previously shown to be abolished by cyclooxygenase blockade suggesting that endogenous prostaglandins exerted a heat-sensitizing action. The present study aimed at investigating the effects of exogenous prostaglandin E(2) (PGE(2)) and I(2) (PGI(...

journal_title：Life sciences

authors： Derow A,Izydorczyk I,Kuhn A,Reeh PW,Petho G

更新日期：2007-12-14 00:00:00

abstract：:In order to determine the effect of relaxin and estradiol on collagen and noncollagen synthesis by mammary gland fibroblasts, fibroblasts isolated from guinea pig mammary glands were grown on plastic or Cytodex-3 collagen coated microcarriers. On plastic, estradiol (600 pg/ml) increased the incorporation of tritiated ...

journal_title：Life sciences

authors： Sheffield LG,Anderson RR

更新日期：1984-11-26 00:00:00

abstract：:Bupleuri radix, a traditional Chinese herb, has been widely used to treat liver diseases such as hepatitis and cirrhosis. The acetone extract of Bupleurum scorzonerifolium (AE-BS) showed a dose-dependently antiproliferative effect on the proliferation of A549 human lung cancer cells. The IC(50) of AE-BS, i.e., the con...

journal_title：Life sciences

authors： Cheng YL,Chang WL,Lee SC,Liu YG,Lin HC,Chen CJ,Yen CY,Yu DS,Lin SZ,Harn HJ

更新日期：2003-09-19 00:00:00

abstract：:Although (-)-125I-iodopindolol (IPIN) can be used to label beta-adrenergic receptors in the central nervous system (CNS) in vivo, use of this ligand for receptor imaging studies in humans may be limited due to its relatively poor penetration into the CNS. A series of derivatives related to pindolol was therefore studi...

journal_title：Life sciences

authors： Tejani-Butt SM,Brunswick DJ

更新日期：1987-08-24 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：:In rodents an action of estrogen is required for the initiation of implantation of the blastocyst into the endometrium of a progesterone-primed uterus. Thus removal of endogenous estrogen, either directly by ovariectomy or indirectly by hypophysectomy, prevents implantation in the pregnant rat. In the present study, d...

journal_title：Life sciences

authors： Johnson DC

更新日期：1996-01-01 00:00:00

abstract：:When injected into the substantia nigra reticulata of naive rats, dynorphin-(1-17) caused a dose dependent contralateral rotation which was inhibited by naloxone in a dose dependent manner. Met-enkephalin injected in the same coordinates as the ones used with dynorphin also induced rotation but of lower intensity, whi...

journal_title：Life sciences

authors： Herrera-Marschitz M,Hökfelt T,Ungerstedt U,Terenius L

更新日期：1983-01-01 00:00:00

abstract：:The ontogenetic development of [3H]-spiroperidol binding sites was measured in the optic tectum, cerebellum, forebrain base, and forebrain roof of 1-, 4-, and 16-day-old chicks. In the chick optic tectum and cerebellum both the density and the total number of [3H]-spiroperidol binding sites increased from 4- to 16-day...

journal_title：Life sciences

authors： McDougall SA,Neisewander JL,Bardo MT,Zolman JF

更新日期：1989-01-01 00:00:00

abstract：:The release of endogenous dopamine (DA) has been measured in the rat striatum following the intracardial administration of various doses of beta-phenylethylamine (PEA) or alpha,alpha-dideutero-beta-phenylethylamine (deuterated PEA). The release was significantly increased for a period of approximately 15 minutes by a ...

journal_title：Life sciences

authors： Philips SR

更新日期：1986-12-22 00:00:00

abstract：:Rat aortic smooth muscle homogenates and membrane preparations contain a phospholipase C which hydrolyzes phosphatidylinositol 4,5-biphosphate (PIP2). We discovered that guanyl-5'yl-imidodiphosphate (Gpp(NH)p) activated the hydrolysis of exogenous PIP2 but not of phosphatidylinositol (PI) in rat aortic membranes. Furt...

journal_title：Life sciences

authors： Roth BL

更新日期：1987-08-03 00:00:00

abstract：:Recently, 4.4'-bis(1-p-carboxyphenyl-3-methyl-5-dydroxyl)-pyrazol (DRD156) has been developed as a new sensitive reagent that reacts specifically with singlet oxygen. The specificity of DRD156 for singlet oxygen in a biomimetic solution (micellar solution) and the effects of its coexistence with other reagent were exa...

journal_title：Life sciences

authors： Nishide N,Miyoshi N

更新日期：2002-12-06 00:00:00

abstract：:Uncoupling proteins (UCPs) are supposed to be involved in diet-induced thermogenesis. Their activities are usually elevated by feeding and reduced by fasting in normal animals. To investigate whether fasting affects the expression of UCPs mRNA in brown adipose tissue (BAT) of bilateral ventromedial hypothalamus (VMH)-...

journal_title：Life sciences

authors： Kageyama H,Osaka T,Kageyama A,Kawada T,Hirano T,Oka J,Miura M,Namba Y,Ricquier D,Shioda S,Inoue S

更新日期：2003-05-16 00:00:00

abstract：AIMS:Antenatal glucocorticoid therapy has been shown to prevent acute diseases including infant respiratory distress syndrome and reduce mortality, although little is known about the effects on cardiac function-related proteins in the fetus or neonate. We investigated whether cardiac function-related proteins were alte...

journal_title：Life sciences

authors： Tsuzuki Y,Takeba Y,Kumai T,Matsumoto N,Mizuno M,Murano K,Asoh K,Takagi M,Yamamoto H,Kobayashi S

更新日期：2009-10-21 00:00:00

abstract：:Previous studies showed that acute treatment with aminophylline (AMPY) significantly elevated maximum thermogenesis and improved cold tolerance in rats and man in severe cold. However, the exact mechanism by which AMPY enhances thermogenesis was unknown. Rats receiving enprofylline (ENPRO) (1.5 and 15 mg/kg, i.p.), a ...

journal_title：Life sciences

authors： Wang LC,Jourdan ML,Lee TF

更新日期：1989-01-01 00:00:00

abstract：:The purpose of the present studies was to investigate the activity of the adrenal gland and the pituitary beta-endorphin system in individuals from families with a 3 generation history of alcoholism, High Risk group, or from families without history of alcoholism, Low Risk group. All subjects had a medical examination...

journal_title：Life sciences

authors： Gianoulakis C,Béliveau D,Angelogianni P,Meaney M,Thavundayil J,Tawar V,Dumas M

更新日期：1989-01-01 00:00:00

abstract：:Immunoreactive atrial natriuretic peptide (ir-ANP) was measured in the follicular fluid of pig ovarian follicle, and rabbit ovarian homogenates and perfusates using a specific radioimmunoassay (RIA). Serial dilution curves made with the extracts of follicular fluid, ovarian homogenates and perfusates using SepPak C18 ...

journal_title：Life sciences

authors： Kim SH,Cho KW,Seul KH,Ryu H,Koh GY

更新日期：1989-01-01 00:00:00

abstract：:Thirty-four novel, diaryl ω-(isothiocyanato)alkylphosphonates with chlorine atom and methoxy, dimethoxy, methylsulfanyl, or methoxycarbonyl groups at ortho, meta, or para positions of the phenyl ring, and with an unbranched alkyl chain (n = 2-6) were designed and synthesized in a one-pot reaction in 11-76% yields. All...

journal_title：Life sciences

authors： Janczewski Ł,Burchacka E,Psurski M,Ciekot J,Gajda A,Gajda T

更新日期：2019-02-15 00:00:00

abstract：:The present investigation examined the correlation between the regulation of mucosal prostaglandin (PG) biosynthesis and the release of the neuropeptide substance P (SP) in rat stomachs by indomethacin, a cyclooxygenase inhibitor. When given subcutaneously at the dose of 5 mg/kg, indomethacin reduced mucosal biosynthe...

journal_title：Life sciences

authors： Ko JK,Tang F,Cho CH

更新日期：1997-01-01 00:00:00