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Hypertension is a leading independent risk factor for the development of cardiovascular disease, the leading cause of death globally. Importantly, the prevalence of hypertension is positively correlated with obesity, with obesity-related hypertension being difficult to treat due to a lack of current guidelines in this population as well as limited efficacy and adverse off-target effects of currently available antihypertensive therapeutics. This highlights the need to better understand the mechanisms linking hypertension with obesity to develop optimal therapeutic approaches. In this regard, the renin–angiotensin system, which is dysregulated in both hypertension and obesity, is a prime therapeutic target. While research and therapies have typically focused on the deleterious angiotensin II axis of the renin–angiotensin system, emerging evidence shows that targeting the protective angiotensin-(1-7) axis also improves cardiovascular and metabolic functions in animal models of obesity hypertension. While the precise mechanisms involved remain under investigation, in addition to peripheral actions, evidence exists to support a role for the central nervous system in the beneficial cardiometabolic effects of angiotensin-(1-7). This review will highlight emerging translational studies exploring the cardiovascular and metabolic regulatory actions of angiotensin-(1-7), with an emphasis on its central actions in brain regions including the brainstem and hypothalamus. An improved understanding of the central mechanisms engaged by angiotensin-(1-7) to regulate cardiovascular and metabolic functions may provide insight into the potential of targeting this hormone as a novel therapeutic approach for obesity-related hypertension.
Hypertension is a leading independent risk factor for the development of cardiovascular disease, the leading cause of death globally. Importantly, the prevalence of hypertension is positively correlated with obesity, with obesity-related hypertension being difficult to treat due to a lack of current guidelines in this population as well as limited efficacy and adverse off-target effects of currently available antihypertensive therapeutics. This highlights the need to better understand the mechanisms linking hypertension with obesity to develop optimal therapeutic approaches. In this regard, the renin–angiotensin system, which is dysregulated in both hypertension and obesity, is a prime therapeutic target. While research and therapies have typically focused on the deleterious angiotensin II axis of the renin–angiotensin system, emerging evidence shows that targeting the protective angiotensin-(1-7) axis also improves cardiovascular and metabolic functions in animal models of obesity hypertension. While the precise mechanisms involved remain under investigation, in addition to peripheral actions, evidence exists to support a role for the central nervous system in the beneficial cardiometabolic effects of angiotensin-(1-7). This review will highlight emerging translational studies exploring the cardiovascular and metabolic regulatory actions of angiotensin-(1-7), with an emphasis on its central actions in brain regions including the brainstem and hypothalamus. An improved understanding of the central mechanisms engaged by angiotensin-(1-7) to regulate cardiovascular and metabolic functions may provide insight into the potential of targeting this hormone as a novel therapeutic approach for obesity-related hypertension.
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