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Updated: Nov 28, 2025

Improved Renal Denervation Mitigated Hypertension Induced by Angiotensin II Infusion
Published on: May 26, 2022
Zinc complexation improves angiotensin II receptor type 1 blockade and in vivo antihypertensive activity of
Valeria R Martínez1, María V Aguirre2, Juan S Todaro2
1Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP), 120 no. 1465, La Plata, Argentina.
Abstract:
Background: Angiotensin II receptor blockers were designed as therapeutic agents to block the binding site of the angiotensin II receptor type 1 (AT1R). Methodology: The structure of telmisartan was modified by coordination to the biometal Zn(II), resulting in the compound ZnTelm. Its antihypertensive activity and cellular mechanisms in comparison to telmisartan were studied. Results: Compared with telmisartan, ZnTelm displayed stronger binding to AT1R (binding studies on AT1R-transfected human embryonic kidney cells) and a greater reduction of reactive oxygen species and cytosolic calcium concentration induced by angiotensin II. The antihypertensive activity of the complex (assessed in an N(G)-Nitro-L-arginine methyl ester-induced hypertension model) was significantly higher. ZnTelm also reduced hypertrophy in aortic artery rings and tubular collagen deposition. Conclusion: ZnTelm enhances the AT1R blockade and consequently its antihypertensive effect.
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