Betulinic acid as apoptosis activator: Molecular mechanisms, mathematical modeling and chemical modifications.

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：:This work explored cellular trapping and extrusion of Cd and Hg in epithelial cells, with special emphasis on the jejunal mucosa. Important determinants of these processes are the concentration, diffusibility and relative metal affinities of a variety of cellular metal-binding compounds including metallothionein (MT)....

journal_title：Life sciences

authors： Foulkes EC

更新日期：1993-01-01 00:00:00

abstract：:Glycation-modified hemoglobin in diabetes mellitus has been suggested to be a source of enhanced catalytic iron and free radicals causing pathological complications. The present study aims to verify this idea in experimental diabetes. Pelargonidin, an anthocyanidin, has been tested for its antidiabetic potential with ...

journal_title：Life sciences

authors： Roy M,Sen S,Chakraborti AS

更新日期：2008-05-23 00:00:00

abstract：:Danshen, a Chinese herbal medicine has been widely used for the treatment of cardiovascular diseases. Magnesium tanshinoate B (MTB) is an active compound purified from Danshen. The objective of this study was to investigate the effect of MTB on the susceptibility of low density lipoproteins (LDL) to oxidative modifica...

journal_title：Life sciences

authors： O K,Lynn EG,Vazhappilly R,Au-Yeung KK,Zhu DY,Siow YL

更新日期：2001-01-12 00:00:00

abstract：:Cachexia is a complex medical condition characterized by significant weight loss associated with decreased body fat and protein; the condition may present itself with or without anorexia. We have isolated and partially characterized a proteoglycan (azaftig) from the urine of cancer and AIDS patients experiencing weigh...

journal_title：Life sciences

authors： Figueroa J,Vijayagopal P,Debata C,Prasad A,Prasad C

更新日期：1999-01-01 00:00:00

abstract：AIMS:Obesity is associated with increased cardiovascular morbidity and mortality. It is accompanied by augmented O-linked β-N-acetylglucosamine (O-GlcNAc) modification of proteins via increasing hexosamine biosynthetic pathway (HBP) flux. However, the changes and regulation of the O-GlcNAc levels induced by obesity are...

journal_title：Life sciences

authors： Cui YL,Xue RQ,Xi He,Ming Zhao,Yu XJ,Liu LZ,Wu Q,Si Yang,Li DL,Zang WJ

更新日期：2019-04-01 00:00:00

abstract：:Classical studies have demonstrated that the visual centers in primates consist of cortical areas V1, V2 and V4 and their branches. However, nothing is known about how these visual areas change in postnatal development. In the present studies, therefore, pigs aged 2, 4, and 6 months old, were stimulated visually with ...

journal_title：Life sciences

authors： Fang M,Li J,Rudd JA,Wai SM,Yew JC,Yew DT

更新日期：2006-02-09 00:00:00

abstract：:Several serotonin (5-HT) receptor antagonists with varying specificities for the 5-HT receptor types, were studied with regard to their effects on blood glucose levels in mice. The non-selective antagonists, metergoline and methysergide, proved to be hyperglycemic at doses commonly used to antagonize 5-HT receptors. I...

journal_title：Life sciences

authors： Wozniak KM,Linnoila M

更新日期：1991-01-01 00:00:00

abstract：:The present study examines the signal transduction mechanism that is involved in the growth of vascular smooth muscle cells exposed to 4-hydroxynonenal (HNE) in vitro. This aldehyde component of oxidized low-density lipoprotein has been identified in atherosclerotic lesion. Exposure to HNE caused ERK, JNK, and p38 MAP...

journal_title：Life sciences

authors： Kakishita H,Hattori Y

更新日期：2001-06-29 00:00:00

abstract：:Central dopaminergic (DA) function in children was assessed by monitoring plasma-free homovanillic acid (pHVA) levels after brief (18 hour) administration with debrisoquin sulfate, a peripherally active antihypertensive agent that blocks peripheral, but not central, HVA production. Brief debrisoquin administration res...

journal_title：Life sciences

authors： Riddle MA,Shaywitz BA,Leckman JF,Anderson GM,Shaywitz SE,Hardin MT,Ort SI,Cohen DJ

更新日期：1986-03-17 00:00:00

abstract：:We recently labeled with carbon-11, a high affinity, selective, 5-HT3 receptor (5-HT3R) ligand, S21007, for potential positron emission tomography (PET) applications. To evaluate the in vivo binding properties of [11C]S21007, its brain regional distribution, tissue and plasma pharmacokinetics and plasma metabolisation...

journal_title：Life sciences

authors： Besret L,Dauphin F,Guillouet S,Dhilly M,Gourand F,Blaizot X,Young AR,Petit-Taboué MC,Mickala P,Barbelivien A,Rault S,Barré L,Baron JC

更新日期：1998-01-01 00:00:00

abstract：:Rhesus monkeys were trained to discriminate injections of saline from those of beta-carboline-3-carboxylic acid ethyl ester (beta-CCE), a compound that binds to the benzodiazepine receptor, but often has actions opposite to those of the benzodiazepines. A benzodiazepine agonist midazolam and low doses of a specific be...

journal_title：Life sciences

authors： Takada K,Winger G,Cook J,Larscheid P,Woods JH

更新日期：1986-03-17 00:00:00

abstract：:It has been shown that some cytochrome P450-dependent enzyme activities could present daily fluctuations, particularly CYP3A isoenzymes which are enhanced during the dark period. The aim of this study was to investigate whether age and photoperiodic conditions at different circadian stages could influence these fluctu...

journal_title：Life sciences

authors： Martin C,Dutertre-Catella H,Radionoff M,Debray M,Benstaali C,Rat P,Thevenin M,Touitou Y,Warnet JM

更新日期：2003-06-06 00:00:00

abstract：AIMS:The dysregulation of circular RNAs (circRNAs) has been implicated in the progression of diabetic retinopathy (DR). This study aims to explore the role and underlying mechanism of hsa_circ_0081108 (circCOL1A2) in DR. MATERIALS AND METHODS:circCOL1A2, vascular endothelial growth factor (VEGF) and miR-29b expression...

journal_title：Life sciences

authors： Zou J,Liu KC,Wang WP,Xu Y

更新日期：2020-09-01 00:00:00

abstract：:The purpose of this investigation was to determine the effects of experimental dicrocoeliosis on bile formation in the hamster. Studies were carried out at 120 days after infection with an oral dose of 40 metacercariae of Dicrocoelium dendriticum. A significant elevation in bile flow (+20%) and in the biliary output o...

journal_title：Life sciences

authors： Sánchez-Campos S,Tuñón MJ,González P,Marín JJ,González-Gallego J

更新日期：1998-01-01 00:00:00

abstract：:The relationship between prolactin (PRL) secretion and the neurointermediate lobe (NIL) of the pituitary gland was investigated. Plasma PRL concentrations in rats bearing anterior pituitaries autografted with or without the NIL to the renal capsule were elevated to equal extents at 1 through 6 weeks after surgery (p g...

journal_title：Life sciences

authors： Fagin KD,Neill JD

更新日期：1982-03-29 00:00:00

abstract：:Testosterone propionate, cortisone, or sesame oil vehicle were given to rats during the last week of pregnancy so that effects of the hormones on anogenital distance, breeding capacity and vaginal opening of the female progeny could be contrasted. Testosterone significantly increased anogenital distance and delayed va...

journal_title：Life sciences

authors： McCoy SJ,Shirley BA

更新日期：1992-01-01 00:00:00

abstract：AIMS:The molecular pathogenesis of COVID-19 is similar to other coronavirus (CoV) infections viz. severe acute respiratory syndrome (SARS) in human. Due to scarcity of the suitable treatment strategy, the present study was undertaken to explore host protein(s) targeted by potent repurposed drug(s) in COVID-19. MATERIA...

journal_title：Life sciences

authors： Hazra S,Chaudhuri AG,Tiwary BK,Chakrabarti N

更新日期：2020-09-15 00:00:00

abstract：:Acute and chronic opiate exposure impairs the emptying of bile from the gallbladder. In this study, the effects of a 4-day morphine regimen on bile composition were examined. Bile acids and phospholipids concentration of bile obtained from the gallbladder of female morphine-treated (MT) guinea pigs were reduced by 60%...

journal_title：Life sciences

authors： Malave A,Kuta C,Yim GW

更新日期：1993-01-01 00:00:00

abstract：:Anandamide (arachidonylethanolamide), isolated from porcine brain, has been shown to bind to the cannabinoid receptor and also to produce cannabimimetic activity in pharmacological assays. This study examined structure-activity relationships in alkylated anandamide analogs. The analogs were evaluated for their ability...

journal_title：Life sciences

authors： Adams IB,Ryan W,Singer M,Razdan RK,Compton DR,Martin BR

更新日期：1995-01-01 00:00:00

abstract：:Three cholecystokinin type B (CCKB) receptor antagonists were labelled with 11C and evaluated ex vivo in rat biodistribution studies. The CCKB antagonists were YF 476 and two other compounds of the basic 3-ureido-1,4-benzodiazepine class. Following tail-vein administration of [11C]-YF 476 exceedingly low levels of rad...

journal_title：Life sciences

authors： Wilson AA,Jin L,Garcia A,DaSilva JN,Houle S

更新日期：2001-02-02 00:00:00

abstract：AIMS:Reduced cardiac β-adrenoceptors (β-AR) and cardiovascular (CV) dysfunction occur in diabetes mellitus (DM) and can be normalized by insulin. It is unclear how the duration of untreated hyperglycemia prior to intervention impacts insulin's effects. This study assesses insulin's effect on reduced myocardial β-AR and...

journal_title：Life sciences

authors： Haley JM,Thackeray JT,Kolajova M,Thorn SL,DaSilva JN

更新日期：2015-07-01 00:00:00

abstract：:Systemic administration of the amphetamine analogue, 3,4-methylenedioxymethamphetamine (MDMA) produced a dose-dependent increase in the extracellular concentration of dopamine (DA) in the striatum as measured by in vivo microdialysis in awake, freely-moving rats. The extracellular concentration of the DA metabolite, 3...

journal_title：Life sciences

authors： Nash JF

更新日期：1990-01-01 00:00:00

abstract：:The application of acetic acid to the hind leg of a frog will induce a spinally mediated wiping reflex only if the acetic acid concentration is above a certain threshold. By using this reflex as the basis of a test for nociception, we show that morphine sulfate is a potent analgesic in the frog when injected into the ...

journal_title：Life sciences

authors： Stevens CW,Pezalla PD

更新日期：1983-11-21 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：:Previous in vitro evidence suggests that adrenaline causes K influx in skeletal muscle by stimulating a ouabain sensitive Na/K ATPase membrane pump. However in rabbits, adrenaline induced hypokalaemia was not significantly altered by pretreatment with digoxin (50 micrograms/kg). Rats were infused with adrenaline or sa...

journal_title：Life sciences

authors： Struthers AD,Davies DL,Harland D,Price JS,Brown RA,Quigley C,Brown MJ

更新日期：1987-01-05 00:00:00

abstract：:We have confirmed that hypoxia elicits a substantial rise in blood choline levels in young adult rats. An intravenous infusion of tracer quantities of [2H4]-Ch, serial measurements of blood [2H0]-Ch and [2H4]-Ch, and a simple pharmacokinetic model were used to assess the bidirectional flux of choline between the centr...

journal_title：Life sciences

authors： Jenden DJ,Scremin OU,Roch M,Li G

更新日期：1996-01-01 00:00:00

abstract：:Three forms of alkaline phosphatase have been isolated from different sections of the small intestine: F3 180 kDa from the duodenum; F2 150 kDa principally jejunal; F1 120 kDa the only ileal form. Their catalytic properties have been compared as well as the electrophoretic properties the dimer and monomer of their pho...

journal_title：Life sciences

authors： Tardivel S,Razanamaniraka L,Porembska Z,Crouzoulon G,Fournier P,Dupuis Y

更新日期：1988-01-01 00:00:00

abstract：:Ischemic preconditioning (IP) may protect the lung from ischemia-reperfusion (I/R) injury following cardiopulmonary by-pass and lung or heart transplantation. The present study was undertaken to investigate the role of ATP-dependent potassium channels (K(ATP)) in IP in the isolated buffer-perfused rat lung (IBPR) unde...

journal_title：Life sciences

authors： Kandilci HB,Gümüşel B,Demiryürek AT,Lippton H

更新日期：2006-11-02 00:00:00

abstract：AIMS:Recently, the zebrafish has gained attention as an innovative experimental model to decipher molecular and cellular mechanisms involved in cardiovascular development and diseases. Nevertheless, the use of zebrafish models has been challenged because the transparency of these fish, which allows for accurate cardiac...

journal_title：Life sciences

authors： Fang Y,Sun Y,Luo C,Gu J,Shi Z,Lu G,Silvestre JS,Chen Z

更新日期：2020-07-15 00:00:00