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Effects of third-generation β-blockers, atenolol or amlodipine on blood pressure variability and target organ damage in spontaneously hypertensive rats. 2020

Julieta S Del Mauro, and Paula D Prince, and Miguel A Allo, and Yanina Santander Plantamura, and Marcela A Morettón, and Germán E González, and Facundo M Bertera, and Andrea Carranza, and Susana B Gorzalczany, and Diego A Chiappetta, and Celina Morales, and Ricardo J Gelpi, and Carlos A Taira, and Ariel H Polizio, and Martín Donato, and Christian Höcht
Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Farmacología.

β-blockers are no longer considered as first-line antihypertensive drugs due to their lower cardioprotection. Considering the differences in the pharmacological properties of β-blockers, the present work compared the effects of third-generation β-blockers - carvedilol and nebivolol - with a first-line agent - amlodipine - on hemodynamic parameters, including short-term blood pressure variability (BPV), and their ability to prevent target organ damage in spontaneously hypertensive rats (SHR). SHR rats were orally treated with carvedilol, nebivolol, atenolol, amlodipine or vehicle for 8 weeks. Wistar Kyoto rats treated with vehicle were used as normotensive group. Echocardiographic evaluation, BP, and short-term BPV measurements were performed. Left ventricle and thoracic aorta were removed for histological evaluations and to assess the expression of transforming growth factor β (TGF-β), tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6). Carvedilol, nebivolol or amlodipine induced a greater reduction of carotid BP, short-term BPV and echocardiography parameters than atenolol in SHR rats. Carvedilol, nebivolol and amlodipine were more effective than atenolol in the prevention of cardiac hypertrophy, and cardiac and aortic collagen deposit. Carvedilol and nebivolol, but not atenolol, reduced the expressions of fibrotic and inflammatory biomarkers - TGF-β, TNF-α and IL-6 - in SHR rats to a similar extent to that of amlodipine. Chronic treatment with carvedilol or nebivolol attenuates carotid BP and short-term BPV, and reduces target organ damage in SHR to a greater extent than atenolol. Our findings suggest that the lower cardiovascular protection of nonvasodilating β-blockers, as atenolol, in hypertension must not be translated to third-generation β-blockers.

UI MeSH Term Description Entries
D011918 Rats, Inbred SHR A strain of Rattus norvegicus with elevated blood pressure used as a model for studying hypertension and stroke. Rats, Spontaneously Hypertensive,Rats, SHR,Inbred SHR Rat,Inbred SHR Rats,Rat, Inbred SHR,Rat, SHR,Rat, Spontaneously Hypertensive,SHR Rat,SHR Rat, Inbred,SHR Rats,SHR Rats, Inbred,Spontaneously Hypertensive Rat,Spontaneously Hypertensive Rats
D001794 Blood Pressure PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS. Systolic Pressure,Diastolic Pressure,Pulse Pressure,Pressure, Blood,Pressure, Diastolic,Pressure, Pulse,Pressure, Systolic,Pressures, Systolic
D006352 Heart Ventricles The lower right and left chambers of the heart. The right ventricle pumps venous BLOOD into the LUNGS and the left ventricle pumps oxygenated blood into the systemic arterial circulation. Cardiac Ventricle,Cardiac Ventricles,Heart Ventricle,Left Ventricle,Right Ventricle,Left Ventricles,Right Ventricles,Ventricle, Cardiac,Ventricle, Heart,Ventricle, Left,Ventricle, Right,Ventricles, Cardiac,Ventricles, Heart,Ventricles, Left,Ventricles, Right
D000319 Adrenergic beta-Antagonists Drugs that bind to but do not activate beta-adrenergic receptors thereby blocking the actions of beta-adrenergic agonists. Adrenergic beta-antagonists are used for treatment of hypertension, cardiac arrhythmias, angina pectoris, glaucoma, migraine headaches, and anxiety. Adrenergic beta-Antagonist,Adrenergic beta-Receptor Blockader,Adrenergic beta-Receptor Blockaders,beta-Adrenergic Antagonist,beta-Adrenergic Blocker,beta-Adrenergic Blocking Agent,beta-Adrenergic Blocking Agents,beta-Adrenergic Receptor Blockader,beta-Adrenergic Receptor Blockaders,beta-Adrenoceptor Antagonist,beta-Blockers, Adrenergic,beta-Adrenergic Antagonists,beta-Adrenergic Blockers,beta-Adrenoceptor Antagonists,Adrenergic beta Antagonist,Adrenergic beta Antagonists,Adrenergic beta Receptor Blockader,Adrenergic beta Receptor Blockaders,Adrenergic beta-Blockers,Agent, beta-Adrenergic Blocking,Agents, beta-Adrenergic Blocking,Antagonist, beta-Adrenergic,Antagonist, beta-Adrenoceptor,Antagonists, beta-Adrenergic,Antagonists, beta-Adrenoceptor,Blockader, Adrenergic beta-Receptor,Blockader, beta-Adrenergic Receptor,Blockaders, Adrenergic beta-Receptor,Blockaders, beta-Adrenergic Receptor,Blocker, beta-Adrenergic,Blockers, beta-Adrenergic,Blocking Agent, beta-Adrenergic,Blocking Agents, beta-Adrenergic,Receptor Blockader, beta-Adrenergic,Receptor Blockaders, beta-Adrenergic,beta Adrenergic Antagonist,beta Adrenergic Antagonists,beta Adrenergic Blocker,beta Adrenergic Blockers,beta Adrenergic Blocking Agent,beta Adrenergic Blocking Agents,beta Adrenergic Receptor Blockader,beta Adrenergic Receptor Blockaders,beta Adrenoceptor Antagonist,beta Adrenoceptor Antagonists,beta Blockers, Adrenergic,beta-Antagonist, Adrenergic,beta-Antagonists, Adrenergic,beta-Receptor Blockader, Adrenergic,beta-Receptor Blockaders, Adrenergic
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000959 Antihypertensive Agents Drugs used in the treatment of acute or chronic vascular HYPERTENSION regardless of pharmacological mechanism. Among the antihypertensive agents are DIURETICS; (especially DIURETICS, THIAZIDE); ADRENERGIC BETA-ANTAGONISTS; ADRENERGIC ALPHA-ANTAGONISTS; ANGIOTENSIN-CONVERTING ENZYME INHIBITORS; CALCIUM CHANNEL BLOCKERS; GANGLIONIC BLOCKERS; and VASODILATOR AGENTS. Anti-Hypertensive,Anti-Hypertensive Agent,Anti-Hypertensive Drug,Antihypertensive,Antihypertensive Agent,Antihypertensive Drug,Anti-Hypertensive Agents,Anti-Hypertensive Drugs,Anti-Hypertensives,Antihypertensive Drugs,Antihypertensives,Agent, Anti-Hypertensive,Agent, Antihypertensive,Agents, Anti-Hypertensive,Agents, Antihypertensive,Anti Hypertensive,Anti Hypertensive Agent,Anti Hypertensive Agents,Anti Hypertensive Drug,Anti Hypertensive Drugs,Anti Hypertensives,Drug, Anti-Hypertensive,Drug, Antihypertensive,Drugs, Anti-Hypertensive,Drugs, Antihypertensive
D001011 Aorta The main trunk of the systemic arteries. Aortas
D001262 Atenolol A cardioselective beta-1 adrenergic blocker possessing properties and potency similar to PROPRANOLOL, but without a negative inotropic effect. ICI-66082,Tenormin,Tenormine,ICI 66082,ICI66082
D016207 Cytokines Non-antibody proteins secreted by inflammatory leukocytes and some non-leukocytic cells, that act as intercellular mediators. They differ from classical hormones in that they are produced by a number of tissue or cell types rather than by specialized glands. They generally act locally in a paracrine or autocrine rather than endocrine manner. Cytokine
D017311 Amlodipine A long-acting dihydropyridine calcium channel blocker. It is effective in the treatment of ANGINA PECTORIS and HYPERTENSION. Amlodipine Besylate,Amlodipine Maleate,Amlodipine Maleate (1:1),Amlodipine, (+-)-Isomer,Amlodipine, (+-)-Isomer, Maleate (1:1),Amlodipine, (R)-Isomer,Amlodipine, (S)-Isomer, Maleate (1:1),Amlodis,Amlor,Astudal,Istin,Norvasc

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