Key result
Antihypertensive compounds demonstrated efficacy in conscious rat models, with losartan preventing hypertension development and reducing cardiac hypertrophy in the Goldblatt model.
This protocol unit outlines methods for assessing the antihypertensive activity of new chemical entities in three conscious rat models of hypertension.
Answers are grounded in this paper and cite their sources.
Supports preclinical antihypertensive screening in rat models; leaves open translation to human hypertension management.
The protocols described in this unit are used to assess the effects of new chemical entities on hypertension in conscious rats. In the spontaneously hypertensive rat (SHR) model, the results obtained with the reference compounds clonidine, prazosin, propranolol, and captopril are provided for illustration. All compounds demonstrate antihypertensive activity, with captopril and prazosin being the least and the most active, respectively. In the deoxycorticosterone acetate (DOCA)-salt model in the rat, the test substance shown as an example (a potential endothelin ET(A)-receptor antagonist) prevents the development of hypertension in the first phase. However, the effects of treatment disappear in the very last phase of the study, suggesting the development of a malignant hypertension resistant to treatment in this model. In the Goldblatt hypertension rat model (renal artery stenosis), losartan prevents the development of hypertension. It does not modify the weight of the right and left kidneys but slightly reduces the degree of cardiac hypertrophy.
No takes yet. Share an insight, caveat, or question.
Guillaume et al. (2009) studied Hypertension. Antihypertensive compounds (clonidine, prazosin, propranolol, captopril, ET(A)-receptor antagonist, losartan) was evaluated on Antihypertensive activity. Antihypertensive compounds demonstrated efficacy in conscious rat models, with losartan preventing hypertension development and reducing cardiac hypertrophy in the Goldblatt model.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: