Action of pro-opiomelanocortin products on the rat vas deferens.

abstract：:Nitric oxide (NO) is present in the exhaled breath of humans and experimental animals, but its physiologic role and cellular source(s) remain to be determined. Possible sites of origin are pulmonary endothelial cells and/or resident macrophages. Here we have tested the hypothesis that changes in cardiovascular status ...

journal_title：Life sciences

authors： Bauer JA,Wald JA,Doran S,Soda D

更新日期：1994-01-01 00:00:00

abstract：:The effects of 1,3-dipropyl-8(p-sulfophenyl)xanthine (DPSPX) and enprofylline on the respiratory responses to bilateral occlusions of the common carotid arteries (CCO) were studied in rats anesthetized with sodium pentobarbitone and breathing spontaneously. CCO during periods of 5, 10 and 15 s caused increases in tida...

journal_title：Life sciences

authors： Monteiro EC,Ribeiro JA

更新日期：1989-01-01 00:00:00

abstract：:Immunotherapy with immune checkpoint inhibitors, such as anti-PD-1 drugs, is an area in increasing development for its efficacy and advantages in the treatment of advanced metastatic melanoma. In fact, immunotherapy has been the target of several and recent studies in different types of cancer, namely in melanoma, a g...

journal_title：Life sciences

authors： Moreira RS,Bicker J,Musicco F,Persichetti A,Pereira AMPT

更新日期：2020-01-01 00:00:00

abstract：AIMS:Hypertension is one of the leading causes of cardiovascular mortality and morbidity. It is associated with severe cardiac and vascular dysfunction. Double-stranded RNA-dependent protein kinase (PKR), is a known inducer of inflammation and apoptosis. However, no research has been done to elucidate the role of the P...

journal_title：Life sciences

authors： Kalra J,Dasari D,Bhat A,Mangali S,Goyal SG,Jadhav KB,Dhar A

更新日期：2020-12-01 00:00:00

abstract：AIMS:Sickle cell disease (SCD) pathogenesis leads to recurrent vaso-occlusive and hemolytic processes, causing numerous clinical complications including renal damage. As vasoconstrictive mechanisms may be enhanced in SCD, due to endothelial dysfunction and vasoactive protein production, we aimed to determine whether th...

journal_title：Life sciences

authors： dos Santos AF,Almeida CB,Brugnerotto AF,Roversi FM,Pallis FR,Franco-Penteado CF,Lanaro C,Albuquerque DM,Leonardo FC,Costa FF,Conran N

更新日期：2014-11-04 00:00:00

abstract：:The alpha 1-adrenoceptors present in liver membranes from rats, hamsters and mice were characterized using [3H]prazosin. In the liver membranes from the three species a relatively large number of receptors was observed (500-900 fmol/mg of protein) and the affinities for [3H]prazosin were very similar (0.2-0.3 nM). Mem...

journal_title：Life sciences

authors： García-Sáinz JA,Casas-González P,Romero-Avila MT,González-Espinosa C

更新日期：1994-01-01 00:00:00

abstract：:The binding of membrane immunoglobulin (mIg) by anti-Ig antibodies is known to initiate a mitogenic signal in B lymphocytes. Because in many instances growth control appears to be correlated with phosphokinase activity, as well as with alterations in cytoskeletal architecture, we asked the question whether antibodies ...

journal_title：Life sciences

authors： Rosenspire AJ,Choi YS

更新日期：1988-01-01 00:00:00

abstract：:3H-Flunitrazepam (FNZP) binding was examined in a crude membrane fraction obtained from rat interscapular brown adipose tissue (IBAT). A single population of binding sites was apparent with dissociation constant (KD) = 0.47 +/- 0.04 microM and maximal number of binding sites (Bmax) = 31 +/- 5 pmol.mg prot-1. From the ...

journal_title：Life sciences

authors： Gonzalez Solveyra C,Romeo HE,Rosenstein RE,Estevez AG,Cardinali DP

更新日期：1988-01-01 00:00:00

abstract：:To study the source of immunoreactive epidermal growth factor (ir-EGF) released by thrombin formation we removed 99.9% of the leukocytes normally present in platelet-rich plasma and induced coagulation with 30 mM of Ca2+. The absence of leukocytes did not reduce the amount of ir-EGF released; thus platelets are most l...

journal_title：Life sciences

authors： Kiuru J,Viinikka L,Myllylä G,Pesonen K,Perheentupa J

更新日期：1991-01-01 00:00:00

abstract：:Cilostazol(6-[4-(1-cyclohexyl-1H-tetrazol-5-yl)-butoxy]-3,4- dihydro-2(1H)-quinolinone) selectively inhibits cGMP-inhibited phosphodiesterase (PDE3) and is a potent inhibitor of platelet aggregation induced by various agonists. Effect of cilostazol on shear stress-induced human platelet aggregation (SIPA) was examined...

journal_title：Life sciences

authors： Minami N,Suzuki Y,Yamamoto M,Kihira H,Imai E,Wada H,Kimura Y,Ikeda Y,Shiku H,Nishikawa M

更新日期：1997-01-01 00:00:00

abstract：:Acetyltransferase was isolated by histone-Sepharose affinity chromatography from human cord blood red cells. The enzyme was detected only in very young red cells. The semipurified enzyme and [14C]acetyl-CoA were used to acetylate isolated Hb F tetramer and alpha and gamma subunits. The in vitro acetylated products wer...

journal_title：Life sciences

authors： Qiu CC,Kasten-Jolly J,Abraham EC

更新日期：1988-01-01 00:00:00

abstract：:The content of lactic acid in red blood cells, plasma, and Ehrlich ascites tumor cells were measured by a gas-liquid chromatography using a column with a terephtalic acid support coated with polyethylene glycol-6000. The lactic acid contents were directly determined in aqueous samples, because they were converted to a...

journal_title：Life sciences

authors： Kageyama K,Onoyama Y,Nakajima T,Tumura M,Nishida T,Kogawa H,Tanabe K

更新日期：1992-01-01 00:00:00

abstract：AIMS:The aim of the present study was to investigate the protective effects of AGK2 as a selective SIRT2 inhibitor on thioacetamide (TAA)-induced acute liver failure (ALF) in mice and its potential mechanism. MAIN METHODS:All male C57BL/6 mice were separated into control, TAA, AGK2 + TAA, and AGK2 groups. The histolog...

journal_title：Life sciences

authors： Jiao FZ,Wang Y,Zhang WB,Zhang HY,Chen Q,Shi CX,Wang LW,Gong ZJ

更新日期：2019-08-01 00:00:00

abstract：:Muscarinic agonists elicit contraction in the standard guinea pig ileum bioassay through activation of M3 muscarinic receptors that are also linked to phosphoinositide hydrolysis. Surprisingly, the most abundant muscarinic receptor in the ileum is the M2 which causes a specific inhibition of cyclic AMP accumulation el...

journal_title：Life sciences

authors： Ehlert FJ,Thomas EA

更新日期：1995-01-01 00:00:00

abstract：:Nitric oxide is involved in a countless number of physiological processes and is known to have cytoprotective as well as cytotoxic effects. Increased knowledge about the multifaceted role of nitric oxide in a variety of disease states has led to the design of multiple treatment strategies involving the nitric oxide sy...

journal_title：Life sciences

authors： Grant MK,El-Fakahany EE

更新日期：2004-02-20 00:00:00

abstract：:Ten neuropeptides were measured by RIA in human cerebrospinal fluid obtained from 30 normal volunteers. The levels of seven peptides (corticotropin releasing factor, adrenocorticotropin, vasoactive intestinal peptide, somatostatin, beta-endorphin, beta-lipotropin, and the N-terminal fragment of proopiomelanocortin) we...

journal_title：Life sciences

authors： Berrettini WH,Nurnberger JI Jr,Gold PW,Chretien M,Chrousos GP,Chan JS,Goldin LR,Gershon ES

更新日期：1985-09-30 00:00:00

abstract：:We investigated the role of nitric oxide (NO) and endothelium-derived hyperpolarizing factor (EDHF) in hemodynamic action of leptin. The effect of leptin (1 mg/kg i.p.) on systolic blood pressure (SBP) was examined in lean rats and in rats made obese by feeding highly palatable diet for either 1 or 3 months. Separate ...

journal_title：Life sciences

authors： Bełtowski J,Wójcicka G,Jamroz-Wiśniewska A

更新日期：2006-05-30 00:00:00

abstract：:Acute ethanol treatment in vivo (i.p. injection of 3.5 g ethanol/Kg B. wt.) stimulated the release of beta-endorphin like peptides by the pituitary gland as was indicated by the increased content of beta-endorphin like immunoreactivity (beta-EPLIR) in the plasma. Furthermore, a significant decrease in the anterior lob...

journal_title：Life sciences

authors： Gianoulakis C,Barcomb A

更新日期：1987-01-05 00:00:00

abstract：:Respiring mitochondria represent the major source of superoxide production in most cells, and superoxide anions function as direct precursors of hydrogen peroxide formation within mitochondria. We use a lucigenen-derived chemiluminescence (LDCL) assay to test the hypothesis that intramitochondrial superoxide productio...

journal_title：Life sciences

authors： Capone G,Kim P,Jovanovich S,Payne L,Freund L,Welch K,Miller E,Trush M

更新日期：2002-05-03 00:00:00

abstract：:The anticonvulsant effects and duration of protective action of midazolam against Metrazol induced seizures were studied in 528 rats aged 7,12,18,25 and 90 days. The doses of 0.025, 0.05, 0.25, 0.5 and 1.0 mg/kg were administered immediately before Metrazol (100 mg/kg in all but 18-day-old animals where 90 mg/kg were ...

journal_title：Life sciences

authors： Kubová H,Mares P

更新日期：1992-01-01 00:00:00

abstract：AIM:Diabetic nephropathy (DN) is a leading cause of end-stage renal disease, and thus, the ability of antidiabetic drugs to ameliorate renal microvascular disease may be as important as their ability to control blood glucose. Therefore, we investigated the reno-protective effect of the antidiabetic drugs, Sitagliptin a...

journal_title：Life sciences

authors： Ali SM,Khalifa H,Mostafa DK,El Sharkawy A

更新日期：2016-05-15 00:00:00

abstract：:Deficiencies in cellular cyclic AMP (cAMP) and nitric oxide (NO) production are thought to be involved in the pathogenesis of diabetic neuropathy. We used a human neuroblastoma cell line, SH-SY5Y, to investigate the effect of cilostazol, a specific cAMP phosphodiesterase inhibitor, on NO production and Na+, K+-ATPase ...

journal_title：Life sciences

authors： Inada H,Shindo H,Tawata M,Onaya T

更新日期：1999-01-01 00:00:00

abstract：:C57BL6/J (B6) mice lacking Se-dependent GSH peroxidase 1 and 2 (GPx1/2-DKO) develop mild to moderate ileocolitis around weaning. These DKO mice have a disease resembling human very-early-onset inflammatory bowel disease (VEOIBD), which is associated with mutations in NADPH oxidase genes. Drugs including dexamethasone ...

journal_title：Life sciences

authors： Chu FF,Esworthy RS,Shen B,Gao Q,Doroshow JH

更新日期：2019-12-15 00:00:00

abstract：:Synthesis and degradation of polyphosphoinositides in a rat brain synaptosome preparation were depressed by phenobarbital. Phosphatidylinositol-4-phosphate kinase (PIP-kinase), the enzyme which synthesizes phosphatidylinositol-4,5-bisphosphate (PIP2) was most strongly affected (50% inhibition at 3 mM phenobarbital); p...

journal_title：Life sciences

authors： Deshmukh DS,Kuizon S,Brockerhoff H

更新日期：1987-11-02 00:00:00

abstract：:A series of cyclic conformationally restricted penicillamine containing somatostatin octapeptide analogues have been prepared by standard solid phase synthetic techniques and tested for their ability to inhibit specific [125I]CGP 23,996 (des-Ala1-,Gly2-[desamino-Cys3Tyr11]-dicarba3, 14-somatostatin), [3H]naloxone or [...

journal_title：Life sciences

authors： Gulya K,Pelton JT,Hruby VJ,Yamamura HI

更新日期：1986-06-16 00:00:00

abstract：:To determine the mechanism of anoxic vasoconstriction, precontracted rat aortic rings were exposed to 95% N2, which caused additional contraction. Reoxygenation (95% O2) resulted in initial relaxation followed by contraction. Indomethacin did not affect anoxic contraction or reoxygenation-mediated events, but NG-monom...

journal_title：Life sciences

authors： Mehta JL,Lawson DL,Yang BC,Haught WH,Hintze T

更新日期：1991-01-01 00:00:00

abstract：:We investigated the mechanism mediating cholinergic control of cell-to-cell adhesion of human epidermal keratinocytes (KC) by non-neuronal acetylcholine produced by KC themselves. We first measured cholinergic effects on the expression of desmoglein (Dsg) 1 and 3 in KC using the semi-quantitative immunofluorescence an...

journal_title：Life sciences

authors： Nguyen VT,Arredondo J,Chernyavsky AI,Kitajima Y,Grando SA

更新日期：2003-03-28 00:00:00

abstract：:Mechanisms by which opiates alter neuronal functions, including neuroendocrine functions, are not well defined. We have previously demonstrated that morphine rapidly and transiently increases expression of the proto-oncogene c-fos in the rat caudate-putamen. This regulation of the c-fos gene by morphine may represent ...

journal_title：Life sciences

authors： Chang SL,Harlan RE

更新日期：1990-01-01 00:00:00

abstract：AIMS:Ginsenoside-Rg1 (G-Rg1), a saponin that is a primary component of ginseng, is very useful and important in traditional Chinese medicine for stroke. The objective of this study was to explore the mechanisms underlying the neuroprotective effect of G-Rg1 on focal cerebral ischemia/reperfusion. MAIN METHODS:Focal ce...

journal_title：Life sciences

authors： Xie CL,Li JH,Wang WW,Zheng GQ,Wang LX

更新日期：2015-01-15 00:00:00

abstract：:Activation of GABA(B) receptors produces analgesia in acute and chronic pain models. Data indicate that a possible mechanism for this effect is a GABA(B) receptor-induced blockade of neurokinin-1 (NK-1) receptor gene expression in the spinal cord. While much more potent GABA(B) receptor agonists (CGP 44532) have been ...

journal_title：Life sciences

authors： Enna SJ,Harstad EB,McCarson KE

更新日期：1998-01-01 00:00:00