Angiotensin converting enzyme (ACE) in medicine
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Angiotensin Converting Enzyme (ACE) Function and Medical Importance
Angiotensin converting enzyme (ACE) is a key enzyme in the renin-angiotensin system (RAS), which regulates blood pressure and fluid balance in the body. ACE is found in various organs, including the lungs, brain, pancreas, liver, and immune cells, and is central to converting angiotensin I into angiotensin II, a potent vasoconstrictor that raises blood pressure. ACE also breaks down bradykinin, a molecule that helps blood vessels relax, and other vasoactive peptides, influencing cardiovascular and kidney function as well as immune responses 1357.
ACE in Cardiovascular and Kidney Disease Management
ACE plays a critical role in the development and management of cardiovascular diseases (CVDs) and hypertension. ACE inhibitors (ACEIs) are widely used as first-line medications to lower blood pressure, treat heart failure, and manage chronic kidney disease. By blocking ACE, these drugs reduce the production of angiotensin II and increase bradykinin levels, leading to blood vessel relaxation, reduced blood volume, and lower oxygen demand by the heart 2345+2 MORE. However, ACEIs can have side effects such as renal insufficiency, prompting ongoing research to develop more selective and safer inhibitors 34.
Advances in ACE Inhibitor Development
Recent advances in structural biology and computational modeling have improved our understanding of how ACE inhibitors work at the molecular level. High-resolution studies have revealed the structure of ACE’s active sites and how different inhibitors bind, enabling the design of new drugs with better selectivity and fewer side effects. Natural peptides and plant-derived compounds with ACE-inhibitory activity are also being explored as alternatives to synthetic drugs, offering potential benefits with fewer adverse effects 45910.
ACE, Immunity, and Disease Pathogenesis
Beyond blood pressure regulation, ACE is involved in immune system function, influencing immune cell activity and the production of immunoregulatory molecules. Dysregulation of ACE activity can contribute to chronic inflammation and the progression of cardiovascular diseases. ACE inhibitors may also have anti-inflammatory effects, which could benefit patients with CVDs and those with COVID-19, as the disease can trigger overactive immune responses and cardiovascular injury 167.
ACE2: A Related Enzyme with Distinct Roles
ACE2 is a homolog of ACE with distinct functions. While ACE increases angiotensin II, ACE2 degrades it, producing peptides that counteract the effects of angiotensin II and help protect the heart and kidneys. ACE2 is not inhibited by traditional ACE inhibitors and is mainly found in the heart, kidneys, and testis. Its unique role in local tissue regulation and its involvement in COVID-19 pathogenesis have made it a focus of recent research 28.
Natural and Plant-Based ACE Inhibitors
Many natural peptides and plant-derived compounds have been identified as ACE inhibitors. These include peptides from food sources like blue mussel and various plant extracts, which show promise for managing hypertension and diabetes-related complications with fewer side effects than synthetic drugs. Some of these natural inhibitors also have antioxidant, anti-inflammatory, and antidiabetic properties, making them attractive candidates for future drug development 910.
ACE and Neurological Health
ACE is also linked to neurological diseases such as Alzheimer’s disease (AD). Certain genetic variants of ACE may increase or decrease the risk of AD, and ACE can degrade beta-amyloid, a protein involved in AD pathology. While ACE inhibitors are effective for cardiovascular health, their impact on neurological diseases is still under investigation .
Conclusion
ACE is a central enzyme in blood pressure regulation, cardiovascular and kidney disease management, and immune system function. ACE inhibitors are essential drugs for treating hypertension and related conditions, and ongoing research aims to improve their safety and efficacy. The discovery of ACE2 and the exploration of natural ACE inhibitors from food and plants are expanding the therapeutic potential of targeting this enzyme in medicine 1234+6 MORE.
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