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Receptor Autoradiography Protocol for the Localized Visualization of Angiotensin II Receptors
Published on: June 7, 2016
The frail renin-angiotensin system
1Division of Geriatric Medicine and Gerontology, Johns Hopkins University School of Medicine, John R. Burton Pavilion, 5505 Hopkins Bayview Circle, Baltimore, MD 21224, USA. pabadir1@jhmi.edu
Clinics in Geriatric Medicine
|November 25, 2010
Summary
The renin-angiotensin system (RAS) is vital in aging and disease. Understanding its receptors, Angiotensin II type 1 (AT1R) and type 2 (AT2R), is key to combating age-related conditions like frailty.
Area of Science:
- Cardiovascular Science
- Gerontology
- Endocrinology
Background:
- The renin-angiotensin system (RAS) significantly impacts physiological and pathophysiological processes across organ systems.
- RAS is a critical regulator of hypertension, cardiovascular disease, and renal function.
- Angiotensin II (Ang II) contributes to inflammation, oxidative stress, and vascular senescence, exacerbating age-related diseases.
Purpose of the Study:
- To review the age-related alterations in the RAS.
- To explore the interaction between aging and disease processes mediated by RAS.
- To highlight the role of AT1R and AT2R in the development of frailty.
Main Methods:
- Literature review focusing on the renin-angiotensin system and aging.
- Analysis of the roles of Angiotensin II type 1 (AT1R) and type 2 (AT2R) receptors.
- Synthesis of information on RAS, vascular senescence, and frailty.
Main Results:
- RAS undergoes significant changes with aging.
- Ang II actions, primarily via AT1R, promote vascular senescence and disease.
- AT2R exhibits antagonistic effects on detrimental AT1R actions.
Conclusions:
- Aging impacts RAS, influencing cardiovascular and renal health.
- Understanding the balance between AT1R and AT2R is crucial for addressing age-related diseases.
- RAS modulation presents a potential therapeutic target for frailty and associated conditions.
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