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Epinephrine induced myocardial necrosis: effects of aminophylline and adrenergic blockade.

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The pathogenesis of myocardial necrosis produced in the albino rat by a single large dose of the potent alpha and beta adrenergic agonist epinephrine was investigated. In confirmation and extension of earlier observations with the alpha adrenergic antagonist tolazoline, it was found that alpha

Effect of aminophylline on cisplatin nephrotoxicity in the rat.

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1. The effect of the methylxanthine aminophylline on cisplatin (5 mg kg-1 i.v.)-induced acute renal failure was investigated in the rat. Renal function was measured 5 days after cisplatin administration. 2. Cisplatin caused a polyuric acute renal failure. The creatinine clearance was significantly

Tumor necrosis factor-alpha is chemokinetic for lymphokine-activated killer cells: regulation by cyclic adenosine monophosphate.

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The ability of tumor necrosis factor-alpha (TNF-alpha) to attract lymphokine-activated killer (LAK) cells in vitro was examined. Utilizing modified Boyden chambers (BC), it was observed that TNF-alpha is not chemoattractant for LAK cells. On the other hand, TNF-alpha attracted both fresh and

Effects of aminophylline on cytokines and pulmonary function in patients undergoing valve replacement.

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OBJECTIVE This study is to evaluate the effects of aminophylline on systemic inflammatory response after cardiopulmonary bypass in patients undergoing valve replacement. METHODS Thirty patients undergoing elective valve replacement were randomized to receive either aminophylline treatment

[Protective effect of aminophylline on cerebral injury during cardiopulmonary bypass in infants].

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OBJECTIVE To investigate the protective effect of aminophylline on cerebral injury induced by cardiopulmonary bypass (CPB) in infants. METHODS Forty patients who underwent ventricular septal defect within 3 years old were randomly divided into 2 groups(20 cases in each group).Aminophylline

Pulmonary function changes and immunomodulation of Th 2 cytokine expression induced by aminophylline after sensitization and allergen challenge in brown Norway rats.

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OBJECTIVE Evidence has shown that aminophylline has bronchoprotective, anti-inflammatory, and immunomodulatory effects. Our purpose was to evaluate the effect of different doses of aminophylline on the late-phase reaction, bronchial hyperresponsiveness (BHR) and T cell-related cytokine mRNA

Attenuation of tumor necrosis factor-induced endothelial cell cytotoxicity and neutrophil chemiluminescence.

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Our laboratory has previously shown that the administration of tumor necrosis factor (TNF), a cytokine produced by activated mononuclear cells, to guinea pigs produces a syndrome similar to gram-negative sepsis or ARDS. Pentoxifylline (PTX), a methylxanthine, protects against TNF-induced and

Low-dose prostacyclin is superior to terbutaline and aminophylline in reducing capillary permeability in cat skeletal muscle in vivo.

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OBJECTIVE To analyze and compare the capillary permeability-reducing effects of prostacyclin, terbutaline, and aminophylline. METHODS A prospective, experimental study. METHODS A university laboratory. METHODS Fourteen adult, anesthetized cats. METHODS The study was performed on an autoperfused calf

Muscle fibre necrosis induced by intramuscular injection of drugs.

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A number of amphiphilic and lipid-soluble drugs of heterogeneous pharmacological properties, when injected into rat anterior tibial muscles, induced acute muscle fibre necrosis. The myotoxic agents were: penicillin, cloxacillin, phenobarbital, haloperidol, diazepam, hydantoin, metoclopramide,

Aminophylline Effect on Renal Ischemia-Reperfusion Injury in Mice.

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BACKGROUND Aminophylline increases the intracellular concentration of cAMP and exerts an anti-inflammatory effect. The aim of this study was to investigate the effect of aminophylline on renal ischemia-reperfusion (I/R) injury in mice. METHODS Thirty C57BL/6 mice were divided into 3 groups. In the

Extracellular ATP and adenosine modulate tumor necrosis factor-induced lysis of L929 cells in the presence of actinomycin D.

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Extracellular ATP in concentrations of 0.5 to 2.5 mM modulates TNF-induced cytolysis of L929 cells in the presence of actinomycin D. When present throughout the entire assay period, it inhibits the TNF-induced cytolysis. ADP was less active whereas AMP and GTP were nonreactive. However, inhibition

Neonatal apnea, xanthines, and necrotizing enterocolitis.

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This study evaluates the relationship of xanthine treatment of premature apnea and NEC in a bowel ischemia model. The superior mesenteric artery was occluded for 1.0 minute in 82 wheanling rats. Group I (n = 41) were untreated controls. Group II (n = 21) received aminophylline (AMPH) 40 mg/kg I.P.,

Cardiovascular effect and stimulus-dependent inhibition of superoxide generation from human neutrophils by tibenelast, 5,6-diethoxybenzo(b)thiophene-2-carboxylic acid, sodium salt (LY186655).

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Tibenelast (LY186655), 5,6,-diethoxybenzo(b)thiophene-2-carboxylic acid, sodium salt, is an orally active anti-anaphylactic compound in guinea pigs, and has been shown to prevent bronchospasm in moderately severe asthmatic patients. Pharmacological studies with tibenelast demonstrated that it is a

[Epinephrine combined with acupuncture therapy can treat anaphylactic shock mice through nuclear factor-κB signaling pathway: a rat experimental result].

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To explore the therapeutic effect of epinephrine combined with acupuncture on anaphylactic shock and its mechanism.Sixty male Kunming mice were randomly divided into normal saline (NS) group, anaphylactic shock model group, and integrated traditional

Early diagnosis of experimental necrotizing enterocolitis using proton nuclear magnetic resonance.

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The purpose of this study was (1) to confirm an experimental model of aminophylline-induced necrotizing enterocolitis (NEC); and (2) to determine whether nuclear magnetic resonance (NMR) imaging, based upon proton relaxation values (T1, T2), could detect NEC during its early pathogenesis. Sixty male

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