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Pharmacological Evaluation of the Effects of Phenylcarbamic Acid Derivatives on Cardiovascular Functions in Rats
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Pharmacological Evaluation of the Effects of Phenylcarbamic Acid Derivatives on Cardiovascular Functions in Rats
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Journal Article
Pharmacological Evaluation of the Effects of Phenylcarbamic Acid Derivatives on Cardiovascular Functions in Rats
2018
Overview
Four phenylcarbamic acid derivatives, (1-(4-fluorophenyl)- 4-[3-(4-methoxyphenylcarbamoyloxy)-2-hydroxypropyl]piperazinium chloride (1), (1-(2-methylphenyl)-4-[3-(4-methoxyphenylcarbamoyloxy)- 2-hydroxypropyl]piperazinium chloride) (2), (1-(2-methylphenyl)-4-[3-(4-ethoxyphenylcarbamoyloxy)- 2-hydroxypropyl]piperazinium chloride) (3) and (1-(3-trifluoromethylphenyl)-4-[3-(4-methoxyphenylcarbamoyloxy)- 2-hydroxypropyl]piperazinium chloride) (4) were investigated for their ability to affect various cardiovascular functions and to establish their chemical structure-biological activity relationship. The compounds were evaluated for their antiarrhythmic efficacy using ouabain-induced rhythm disturbances and the ability to inhibit the positive chronotropic effect of isoproterenol in isolated atria of Wistar rats. Electrocardiogram (ECG) parameters in isolated hearts of spontaneously hypertensive rats (SHR) perfused according to the Langendorff method and ability to decrease phenylephrine- -induced contraction of the aortic strips after repeated administration of the compounds were also analyzed. Only compound 3 delayed significantly the evaluated parameter of arrhythmogenicity and was able to antagonize the isoproterenol- induced positive chronotropic effect in normotensive rats’ atria. Similarly, in SHR rats, only compound 3 was able to decrease heart frequency significantly without influencing the duration of QT (time between the start of the Q wave and the end of the T wave) and QTc (frequency corrected QT) intervals. The evaluated endothelial function was improved after administration of compound 2. Fluorine-containing structures (1 and 4) were less effective compared to 2´-methylphenylpiperazine derivatives (2 and 3). The latter two compounds showed suitable efficacy, which supported their use for futher pharmacological research.
Publisher
Sciendo,De Gruyter Brill Sp. z o.o., Paradigm Publishing Services
Subject
