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Biomedical subjects

E Marmo

Publications and source records attributed to E Marmo.

At least 109 records · Page 6Linked to original sources
PubMed1985

Amides of N-phenyl benzonorbornen-2-endo-amine with hypotensive and other activities.

The synthesis of two series of amides and glycinamides starting from N-phenyl benzonorbornen-2-endo-amine, prepared from benzonorbornen-2-one via sodium borohydride reduction of its N-phenyl imine, is described. Some amides showed a remarkable hypotensive activity in rats, whereas amides and glycinamides usually exhibited a moderate infiltration anesthesia in mice. Effects on heart rate in rats and antiarrhythmic activity in mice are also reported.

Amides↗
PubMed1985

Synthesis and pharmacological activity of derivatives of exo-trimethylenenorbornane. V.

The synthesis of two series of amides and glycinamides starting from N-phenyl exo-5,6-trimethylenenorbornan-2-endo-amine, prepared from exo-5,6-trimethylenenorbornan-2-one via sodium borohydride reduction of its N-phenyl imine, is described. All amides showed a moderate hypotensive activity in rats, whereas some glycinamides and amides showed weak infiltration anesthesia and antiarrhythmic activity in mice. Effects on heart rate in rats are also reported.

Amides↗
PubMed1984

Esters and N-substituted urethanes of 6-cis-dimethylamino-1,3,3-trimethyl-2-oxabicyclo[2.2.2]octan-5-cis-ol with hypotensive and other activities.

The synthesis of 6-cis-dimethylamino-1,3,3-trimethyl-2-oxabicyclo [2.2.2] octan-5-cis-ol (III) starting from 6-cis-dimethylamino-1,3,3-trimethyl-2-oxabicyclo [2.2.2] octan-5-trans-ol (I) is described. Starting from aminoalcohol (II), a series of esters (IV) and N-substituted urethanes (V) was prepared. Benzoate (IV e) showed a remarkable hypotensive and bradycardic activity in rats, whereas acetate (IV a) showed infiltration anesthesia and antiarrhythmic activity in mice slightly inferior to those of lidocaine. Antiacetylcholine activity in vitro is also reported.

Acetylcholine↗
PubMed1984

Possible adverse effects on the cardiovascular system of an antiarrhythmic drug mexiletine.

Mexiletine (MXT) is a drug endowed with a marked antiarrhythmic activity which may be included in 1B class of drugs employed in the therapy of arrhythmias. In experimental cardiovascular research, MXT at very high doses induces a decrease in the arterial blood pressure and cardiac performance of dogs. MXT reduces the carotid baroreceptor responses, the fall in blood pressure following pharadic stimulation of the peripheral trunk of the vagus nerve and it also inhibits catecholamine uptake. All these effects may be related to the local anaesthetic activity which MXT possesses and which need careful consideration in the clinical use of the drug.

Animals↗
PubMed1984

Lack of effects of thallium on GABAergic mechanisms in discrete areas of the rat brain.

The effects of intramuscular treatment for 3 and 5 consecutive days with thallium sulphate (2.5, 5 and 10 mg/Kg) on GABA content, glutamate - decarboxylase (GAD) and GABA-transaminase (GABA-T) activity in different areas of the rat brain were studied. Thallium at the dose levels used did not produce significant changes in GABA content, GAD and GABA-T activity in the brain hemispheres, brainstem, hypothalamus, diencephalon and caudate nucleus.

Animals↗
PubMed1984

Systemic and ocular effects of alpha 2-adrenergic stimulating and beta 2-blocking agents.

The effects of alpha 2-adrenergic stimulating agents (clonidine and guanabenz) and beta-adrenolytic agents (atenolol and propranolol) on the systemic arterial pressure, heart-rate, blood glucose level and intraocular pressure, as well as on the concentrations of glucose, Na+, K+ and Ca++ in the lens and aqueous and vitreous humours, are evaluated in the rabbit. alpha 2-adrenergic stimulating agents cause a significant increase of the glucose concentration in the blood, lens, aqueous and vitreous humours; whereas the beta-adrenolytic agents cause insignificant effects. Neither of the two drugs alters the concentration of Na+, K+ and Ca++ in the lens and aqueous and vitreous humours.

Adrenergic alpha-Agonists↗
PubMed1984

Cardiovascular and respiratory effects of spermidine and spermine: an experimental study.

Spermidine (SPD) and spermine (SPM) produced in anaesthetized dogs significant cardiovascular changes at higher doses than other transmitters, i.e. l-noradrenaline, l-adrenaline, histamine, acetylcholine, which produce cardiovascular effects at doses of 0.01-0.05 micrograms/kg given intravenously. SPD was shown to be more active than SPM. The hypotensive response observed after i.v. injection is due to histamine release. The hypotensive and bradycardic effects observed after microinjection of SPD into III cerebral ventricle or into the vertebral artery and of SPM into the vertebral artery are due to an increase in parasympathetic output. Spermidine increased and spermine decreased the baroreceptor reactivity. SPD and SPM did not change the vascular beta- and alpha-adrenergic, cholinergic and histaminergic receptor reactivity.

Animals↗
PubMed1984

Cardiovascular effects of putrescine in dogs after systemic, intra-arterial vertebral and intraventricular injection.

Putrescine produced in anesthetized dogs significant cardiovascular changes at higher doses than other transmitters. The hypotensive response observed after intravenous injection is due to histamine release. Tachycardic effects seem to be due both to release of histamine and to a reflex stimulation of carotid-sinus baroreceptors. The hypotensive and bradycardic effects observed after microinjection of putrescine into the III cerebral ventricle or into the vertebral artery are due to an increase in parasympathetic output.

Animals↗
PubMed1984

On the hypolipemic properties of bendaline.

Bendaline, like tiadenol, clofibrate and clofibric acid generally inhibits: a) some hyperlipemias and lipoidoses induced by either an increased exogenous supply of lipids or the stimulation of cholesterol synthesis or mobilization of lipids; b) platelet aggregation in vitro.

Animals↗
PubMed1984

Derivatives of 4,5,6,7-tetrahydro-7,8,8-trimethyl-3-phenylamino-4,7-methano-2H-ind azo le with hypotensive and hypoglycemic activities. II.

A series of N-substituted thioureas (II) and some ureas (III) were synthesized in excellent yields by reaction of 4,5,6,7-tetrahydro-7,8,8-trimethyl-3-phenylamino-4,7-methano-2H-indazole with alkyl, aryl isothiocyanates and isocyanates, respectively. On the whole compounds (II) and (III) showed hypotensive and in some cases hypoglycemic activity in rats. Effects on heart rate in rats, infiltration anesthesia in mice and antiacetylcholine activity in vitro are also reported.

Acetylcholine↗