Effect of aging on recovery of striatal dopamine receptors following N-ethoxycarbonyl-2-ethoxy-1, 2-dihydroquinoline (EEDQ) blockade.

abstract：:The metabolism and disposition of N-hydroxy-3,4-methylenedioxyamphetamine (N-OH MDA) was studied by utilizing rat liver slices as well as by intravenous pharmacokinetic studies in rats. In the liver slice experiments, N-OH MDA (16 micrograms/ml) was incubated with rat liver slices and the disappearance of N-OH MDA and...

journal_title：Life sciences

authors： Ravis WR,Valaer AK,Brzozowski D,Clark CR

更新日期：1994-01-01 00:00:00

abstract：:Tobacco smoke (TS) is a potent source of oxidants and oxidative stress is an important mechanism by which TS exerts its toxicity in the lung. We have shown that TS induces heat shock (HS)/stress protein (HSP) synthesis in human monocytes. Pulmonary surfactant (PS) whose major physiological function is to confer mechan...

journal_title：Life sciences

authors： Pinot F,Bachelet M,François D,Polla BS,Walti H

更新日期：1999-01-01 00:00:00

abstract：:Angiotensin-converting enzyme inhibitors have been shown to inhibit intimal thickening following balloon catheterization of rat carotid arteries. To assess the role of the renin-angiotensin pathway and the angiotensin type-I (AT1) receptor in this effect, the nonpeptide Ang II antagonist losartan (DuP 753) or vehicle ...

journal_title：Life sciences

authors： Kauffman RF,Bean JS,Zimmerman KM,Brown RF,Steinberg MI

更新日期：1991-01-01 00:00:00

abstract：:We studied the effect of thapsigargin on intracellular calcium levels ([Ca2+]i) measured by fura-2 fluorimetry in Madin Darby canine kidney (MDCK) cells. Thapsigargin elevated [Ca2+]i dose dependently with an EC50 of approximately 0.15 microM. The Ca2+ signal consisted of a slow rise, a gradual decay and a plateau. De...

journal_title：Life sciences

authors： Jan CR,Ho CM,Wu SN,Tseng CJ

更新日期：1999-01-01 00:00:00

abstract：:The enkephalin analogs, [D-Pen2,L-Cys5]- and [D-Pen2,D-Cys5]-enkephalin are cyclic compounds, conformationally constrained by virtue of their 14-membered, disulfide containing rings and by the rigidizing effect of the beta, beta dimethyl substituents of the penicillamine side chain. The analogs exhibit profound delta ...

journal_title：Life sciences

authors： Mosberg HI,Hurst R,Hruby VJ,Galligan JJ,Burks TF,Gee K,Yamamura HI

更新日期：1983-05-30 00:00:00

abstract：:The chloromethyl ketone derivative of D-Ala2-Leu5-enkephalin was synthesized in a radioactive form, and the resulting compound (3H-DALECK) was used to label opioid receptors. 3H-DALECK binds with high affinity, specificity and saturability to rat brain membranes. The number of sites labeled is 130 fmoles/mg protein. U...

journal_title：Life sciences

authors： Szücs M,Belcheva M,Simon J,Benyhe S,Tóth G,Hepp J,Wollemann M,Medzihradszky K

更新日期：1987-07-13 00:00:00

abstract：:The present study was planned to determine the mechanisms involved in the renal vasodilation caused by insulin. Changes in flow caused by the intravenous infusion of 0.004 IU/kg/min of insulin at constant heart rate, aortic blood pressure, left ventricular contractility and blood levels of glucose and potassium in the...

journal_title：Life sciences

authors： Molinari C,Battaglia A,Bona G,Grossini E,Mary DA,Ruggeri P,Stoker JB,Vacca G

更新日期：2001-08-24 00:00:00

abstract：:Beriberi is a disease caused by thiamine deficiency (TD), which may lead to heart problems, including heart failure. Despite the fact that thiamine prevalence is reduced in the industrialized world, it remains a health hazard especially due to chronic alcohol consumption. Diagnosing the presence of TD based on both el...

journal_title：Life sciences

authors： Roman-Campos D,Cruz JS

更新日期：2014-03-07 00:00:00

abstract：AIMS:Endurance exercise causes fatigue due to mitochondrial dysfunction and oxidative stress. In order to find an effective strategy to prevent fatigue or enhance recovery, the effects of a combination of mitochondrial targeting nutrients on physical activity, mitochondrial function and oxidative stress in exercised ra...

journal_title：Life sciences

authors： Sun L,Shen W,Liu Z,Guan S,Liu J,Ding S

更新日期：2010-01-02 00:00:00

abstract：:As the relationship between emotional behavior and electrocardiographic (ECG) change induced by hypothalamic stimulation is poorly understood, eighty-four points in various areas within the hypothalamus in conscious cats were stimulated electrically through chronically implanted electrodes, the objective being to clar...

journal_title：Life sciences

authors： Tashiro N,Tanaka T,Fukumoto T,Hirata K,Nakao H

更新日期：1985-03-18 00:00:00

abstract：:The concentrations of the trace amines, m-tyramine, p-tyramine, phenylethylamine and tryptamine, were measured in the striatum of the brain and in the kidney of adult rats treated with alpha-monofluoromethyldopa (MFMD), an inhibitor of aromatic amino acid decarboxylase. While MFMD decreased the levels of all four amin...

journal_title：Life sciences

authors： Dyck LE

更新日期：1987-02-09 00:00:00

abstract：:The effect of continuous treatment with the selective 5-HT1A agonist gepirone upon 5-HT2-mediated behavior and cortical 5-HT2 receptor binding sites was examined in naive rats or rats receiving noradrenergic (DSP4) or serotonergic (5,7-DHT) lesions. Continuous administration of gepirone in non-lesioned rats for 3, 7, ...

journal_title：Life sciences

authors： Yocca FD,Eison AS,Hyslop DK,Ryan E,Taylor DP,Gianutsos G

更新日期：1991-01-01 00:00:00

abstract：:An acute injection of an intoxicating dose of alcohol to male rats 24 hours prior to breeding with drug-naive females produced no discernible effect on copulatory activity, as reflected in vaginal plugs, but resulted in markedly (> 50%) reduced pregnancy rates. Fetal outcome was also markedly affected in offspring sir...

journal_title：Life sciences

authors： Cicero TJ,Nock B,O'Connor LH,Sewing BN,Adams ML,Meyer ER

更新日期：1994-01-01 00:00:00

abstract：:Following a report that nortriptyline was found useful in the control of enuresis in adults, presumably as an anticholinergic, its likely mechanism of action and apparent bladder specificity have now been investigated in vitro. The ratios of anticholinergic potencies (reciprocal of dissociation contents, Ki) for four ...

journal_title：Life sciences

authors： Rehavi M,Weiss H,Nissenkorn I,Rubinstein R,Cohen S

更新日期：1987-05-04 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：: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：:Lymphocyte apoptosis occurs in response to stressors such as thermal injury, trauma, sepsis, and surgery. This study evaluated the effect of a single bout of physical exercise stress on the induction of apoptosis in murine thymocytes and splenic lymphocytes. Female C57BL/6 mice, treadmill exercised at a submaximal int...

journal_title：Life sciences

authors： Hoffman-Goetz L,Zajchowski S,Aldred A

更新日期：1999-01-01 00:00:00

abstract：:The injection of neostigmine into the hippocampus of anesthetized rats increased the mean arterial blood pressure (17% of baseline after 60 min injection) and decreased the heart rate (24% of baseline after 60 min injection). These changes were blocked by the co-administration of methylatropine into the hippocampus. I...

journal_title：Life sciences

authors： Haruta K,Iguchi A,Matsubara T,Itoh K,Chen CL,Yoshida S,Terada R,Kanashiro M,Suzuki O,Nishimura H

更新日期：1992-01-01 00:00:00

abstract：:Noradrenaline is taken up in noradrenergic neurones via a desipramine-sensitive transport system (uptake1). There are reports which describe the activity of uptake1 being increased by extracellular ATP and ATP gamma S. This was attributed to a protein kinase-mediated mechanism. We reevaluated this phenomenon since a m...

journal_title：Life sciences

authors： Gliese M,Babin-Ebell J,Schömig E,Russ H

更新日期：1994-01-01 00:00:00

abstract：AIMS:Colorectal cancer (CRC) is one of the most common cancers with poor prognosis worldwide. The advent of immunotherapy has greatly improved survival in refractory patients of CRC. In this study, we aimed to identify reliable immune classification and biomarkers that predict immunotherapeutic responses in CRC patient...

journal_title：Life sciences

authors： Li M,Li W,Yang X,Wang H,Peng Y,Yin J,Lu Y,Liu L,Shang J,Zhao Q

更新日期：2020-11-15 00:00:00

abstract：:The in vivo dipyridamole treatment for 16 days produced a significant decrease in chick plasma cholesterol, mainly due to the esterified form. This effect was especially patent in the VLDL + LDL fraction. Similar results were observed in triglyceride content. To our knowledge, this is the first report on this hypolipi...

journal_title：Life sciences

authors： Zafra MF,Fernandez-Becerra M,Castillo M,Burgos C,Garcia-Peregrin E

更新日期：1991-01-01 00:00:00

abstract：:The binding characteristics of the sigma-1 selective benzomorphan [3H]-(+)-pentazocine were determined in human cerebellar membranes. Saturation binding analysis revealed two affinity sites with a KDH of 1.4 +/- 0.7 nM and a KDL of 33.6 +/- 11.9 nM. Kinetic studies performed at 25 degrees C demonstrated reversible bin...

journal_title：Life sciences

authors： Zabetian CP,Staley JK,Flynn DD,Mash DC

更新日期：1994-01-01 00:00:00

abstract：:Proteinase inhibitors were tested for their ability to inhibit prolactin (PRL) and growth hormone (GH) release by cultured anterior pituitary cells of the rat. Inhibitors of microbial origin (chymostatin, elastatinal, leupeptin) had either no or a moderate effect on hormone release while some tripeptide aldehydes, esp...

journal_title：Life sciences

authors： Rappay G,Makara GB,Bajusz S,Nagy I

更新日期：1985-02-11 00:00:00

abstract：:The effects of methadone and morphine on fetal behavior were studied following their administration to either the mother (5micrograms/kg/min) or fetus (0.5micrograms/kg maternal wt./min) using the chronically-instrumented pregnant ewe model. Fourteen unanesthetized, unrestrained pregnant ewes between 130-141 days gest...

journal_title：Life sciences

authors： Umans JG,Szeto HH

更新日期：1983-01-01 00:00:00

abstract：AIMS:Diabetic nephropathy is a growing health concern, which is reported to be associated with inflammation. Luteolin has been explored for the treatment of some diabetic complications. Although several studies have verified the effect of luteolin on diabetic nephropathy, the mechanism by which the therapeutic effects ...

journal_title：Life sciences

authors： Yu Q,Zhang M,Qian L,Wen D,Wu G

更新日期：2019-05-15 00:00:00

abstract：:Bile duct ligation (BDL) in rats induces portal fibrosis. This process has been linked to changes in the oxidative state of the hepatic cells and in the production of nitric oxide. Our objective was to find possible temporal connections between hepatic redox state, NO synthesis and liver injury. In this work we have c...

journal_title：Life sciences

authors： Vázquez-Gil MJ,Mesonero MJ,Flores O,Criado M,Hidalgo F,Arévalo MA,Sánchez-Rodríguez A,Tuñón MJ,López-Novoa JM,Esteller A

更新日期：2004-06-25 00:00:00

abstract：:Nitric oxide (NO) is a highly reactive free radical that is involved in a variety of different biological process. In recent reports, the putative role of NO in the neuropathogenesis of brain inflammation has been demonstrated. And then the relation between neuronal NO and convulsive seizures induced by virus has been...

journal_title：Life sciences

authors： Kawashima H,Inage Y,Ogihara M,Kashiwagi Y,Takekuma K,Hoshika A,Mori T,Watanabe Y

更新日期：2004-01-30 00:00:00

abstract：:In the present work we have investigated to what extent somatostatin (SRIF) release from median eminence (ME) is affected by stress immobilization (IMO) in unanesthetized rats stereotaxically implanted with a push-pull cannula (PPC). One week after implantation, the ME was perfused with artificial cerebrospinal fluid ...

journal_title：Life sciences

authors： Benyassi A,Gavaldà A,Armario A,Arancibia S

更新日期：1993-01-01 00:00:00

abstract：:Sustained levels of leucine comparable to those of human Maple Syrup Urine Disease (MSUD) were achieved in blood and brain of rats by subcutaneous leucine administration twice a day from the 6th to the 28th day of life. Control rats were treated with saline in the same volumes. Behavioral studies using aversive and no...

journal_title：Life sciences

authors： Mello CF,Feksa L,Brusque AM,Wannmacher CM,Wajner M

更新日期：1999-01-01 00:00:00

abstract：:A growing number of studies reported that rosiglitazone (a PPARgamma agonist) could ameliorate the painful state and prevent stress-induced depression. However, whether rosiglitazone can prevent pain-induced depression is unclear. This study aimed to explore the antidepressant effects of rosiglitazone in L5 spinal ner...

journal_title：Life sciences

authors： Zong J,Liao X,Ren B,Wang Z

更新日期：2018-06-15 00:00:00