Discovery and development of ACE inhibitors: Difference between revisions

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[[File:ACE and inhibitor.jpg|thumb]] [[File:Captopril structure.svg|thumb]] [[File:Enalapril structure.svg|thumb]] [[File:Lisinopril structure.svg|thumb]] Discovery and Development of ACE Inhibitors
{{Short description|Overview of the discovery and development of ACE inhibitors}}


The discovery and development of Angiotensin-Converting Enzyme (ACE) inhibitors represent a significant advancement in the field of cardiovascular medicine. These drugs are primarily used to treat hypertension and congestive heart failure, and they work by inhibiting the activity of the enzyme responsible for converting angiotensin I to angiotensin II, a potent vasoconstrictor.
== Discovery and Development of ACE Inhibitors ==
The discovery and development of [[ACE inhibitors]] (Angiotensin-Converting Enzyme inhibitors) represent a significant advancement in the treatment of [[hypertension]] and [[heart failure]]. These medications work by inhibiting the enzyme responsible for the conversion of angiotensin I to angiotensin II, a potent vasoconstrictor, thereby lowering blood pressure and reducing strain on the heart.


== Historical Background ==
=== Historical Background ===
The journey to the discovery of ACE inhibitors began with the study of the renin-angiotensin system (RAS), a hormone system that regulates blood pressure and fluid balance. In the 1950s, researchers identified angiotensin II as a key player in blood pressure regulation. The search for inhibitors of this system led to the discovery of ACE inhibitors.
The journey to the development of ACE inhibitors began with the study of the [[renin-angiotensin system]] (RAS), a hormone system that regulates blood pressure and fluid balance. In the 1950s, researchers identified angiotensin II as a key player in blood pressure regulation. The search for inhibitors of this system led to the discovery of ACE inhibitors.


== Discovery of ACE ==
=== Discovery of Captopril ===
Angiotensin-Converting Enzyme (ACE) was first identified in the 1950s. It was found to be a dipeptidyl carboxypeptidase that converts the inactive decapeptide angiotensin I into the active octapeptide angiotensin II. This conversion is crucial for the regulation of blood pressure and electrolyte balance.
[[File:Captopril_structure.svg|thumb|Structure of Captopril]]
Captopril was the first ACE inhibitor to be developed and approved for clinical use. Its discovery was inspired by the venom of the Brazilian pit viper, ''Bothrops jararaca'', which was found to contain peptides that inhibited ACE. Researchers at [[Squibb]] (now part of [[Bristol-Myers Squibb]]) synthesized captopril in the late 1970s, and it was approved by the [[FDA]] in 1981. Captopril's development marked a breakthrough in cardiovascular medicine, providing a new mechanism to control hypertension.


== Development of ACE Inhibitors ==
=== Development of Enalapril ===
The development of ACE inhibitors was inspired by the study of snake venom. In the 1960s, researchers discovered that the venom of the Brazilian pit viper, *Bothrops jararaca*, contained peptides that could inhibit ACE. This led to the synthesis of the first ACE inhibitor, teprotide, which was effective but not suitable for oral administration.
[[File:Enalapril_structure.svg|thumb|Structure of Enalapril]]
Following the success of captopril, further research led to the development of enalapril, a prodrug that is converted to its active form, enalaprilat, in the body. Enalapril was developed by [[Merck & Co.]] and approved in 1985. It offered improved pharmacokinetic properties over captopril, such as a longer half-life, allowing for once-daily dosing.


=== Captopril ===
=== Introduction of Lisinopril ===
The first orally active ACE inhibitor, captopril, was developed in the late 1970s by researchers at Squibb (now Bristol-Myers Squibb). Captopril was designed based on the structure of teprotide and was approved by the FDA in 1981. It was a breakthrough in the treatment of hypertension and heart failure.
[[File:Lisinopril_structure.svg|thumb|Structure of Lisinopril]]
Lisinopril, another ACE inhibitor, was developed by [[Merck & Co.]] and [[Zeneca]] (now part of [[AstraZeneca]]). It was approved in 1987 and is unique among ACE inhibitors because it is not a prodrug and is excreted unchanged by the kidneys. Lisinopril's long duration of action and favorable side effect profile have made it a widely used medication in the management of hypertension and heart failure.


=== Enalapril and Other ACE Inhibitors ===
=== Mechanism of Action ===
Following the success of captopril, other ACE inhibitors were developed, including enalapril, lisinopril, and ramipril. Enalapril, a prodrug that is converted to the active form enalaprilat in the body, offered improved pharmacokinetic properties and was approved in 1985.
ACE inhibitors work by blocking the conversion of angiotensin I to angiotensin II, a potent vasoconstrictor, thereby reducing blood pressure. This action also decreases the secretion of [[aldosterone]], leading to a reduction in sodium and water retention. The overall effect is a decrease in blood pressure and a reduction in the workload on the heart.


== Mechanism of Action ==
=== Clinical Applications ===
ACE inhibitors work by blocking the conversion of angiotensin I to angiotensin II. This leads to vasodilation, reduced secretion of aldosterone, and decreased blood pressure. By reducing the effects of angiotensin II, ACE inhibitors also decrease the workload on the heart, making them effective in treating heart failure.
ACE inhibitors are primarily used in the treatment of hypertension and heart failure. They are also beneficial in patients with [[diabetic nephropathy]] and after [[myocardial infarction]] to improve survival. Their use is associated with a reduction in the progression of kidney disease in patients with diabetes.


== Clinical Applications ==
=== Side Effects ===
ACE inhibitors are used to treat a variety of cardiovascular conditions, including:
Common side effects of ACE inhibitors include cough, hyperkalemia, and hypotension. Rarely, they can cause angioedema, a potentially life-threatening condition. Patients with [[renal artery stenosis]] or [[pregnancy]] should avoid ACE inhibitors due to the risk of adverse effects.
* Hypertension
* Congestive heart failure
* Myocardial infarction
* Diabetic nephropathy
 
== Side Effects and Contraindications ==
Common side effects of ACE inhibitors include cough, hyperkalemia, and hypotension. They are contraindicated in patients with a history of angioedema related to previous ACE inhibitor therapy and in pregnant women due to the risk of fetal toxicity.


== Also see ==
== Also see ==
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{{Cardiovascular pharmacology}}
{{Cardiovascular pharmacology}}


[[Category:Pharmacology]]
[[Category:Antihypertensive agents]]
[[Category:Cardiovascular drugs]]
[[Category:Cardiovascular drugs]]
[[Category:Drug discovery]]
[[Category:Drug discovery]]

Latest revision as of 00:50, 10 December 2024

Overview of the discovery and development of ACE inhibitors


Discovery and Development of ACE Inhibitors[edit]

The discovery and development of ACE inhibitors (Angiotensin-Converting Enzyme inhibitors) represent a significant advancement in the treatment of hypertension and heart failure. These medications work by inhibiting the enzyme responsible for the conversion of angiotensin I to angiotensin II, a potent vasoconstrictor, thereby lowering blood pressure and reducing strain on the heart.

Historical Background[edit]

The journey to the development of ACE inhibitors began with the study of the renin-angiotensin system (RAS), a hormone system that regulates blood pressure and fluid balance. In the 1950s, researchers identified angiotensin II as a key player in blood pressure regulation. The search for inhibitors of this system led to the discovery of ACE inhibitors.

Discovery of Captopril[edit]

Structure of Captopril

Captopril was the first ACE inhibitor to be developed and approved for clinical use. Its discovery was inspired by the venom of the Brazilian pit viper, Bothrops jararaca, which was found to contain peptides that inhibited ACE. Researchers at Squibb (now part of Bristol-Myers Squibb) synthesized captopril in the late 1970s, and it was approved by the FDA in 1981. Captopril's development marked a breakthrough in cardiovascular medicine, providing a new mechanism to control hypertension.

Development of Enalapril[edit]

Error creating thumbnail:
Structure of Enalapril

Following the success of captopril, further research led to the development of enalapril, a prodrug that is converted to its active form, enalaprilat, in the body. Enalapril was developed by Merck & Co. and approved in 1985. It offered improved pharmacokinetic properties over captopril, such as a longer half-life, allowing for once-daily dosing.

Introduction of Lisinopril[edit]

File:Lisinopril structure.svg
Structure of Lisinopril

Lisinopril, another ACE inhibitor, was developed by Merck & Co. and Zeneca (now part of AstraZeneca). It was approved in 1987 and is unique among ACE inhibitors because it is not a prodrug and is excreted unchanged by the kidneys. Lisinopril's long duration of action and favorable side effect profile have made it a widely used medication in the management of hypertension and heart failure.

Mechanism of Action[edit]

ACE inhibitors work by blocking the conversion of angiotensin I to angiotensin II, a potent vasoconstrictor, thereby reducing blood pressure. This action also decreases the secretion of aldosterone, leading to a reduction in sodium and water retention. The overall effect is a decrease in blood pressure and a reduction in the workload on the heart.

Clinical Applications[edit]

ACE inhibitors are primarily used in the treatment of hypertension and heart failure. They are also beneficial in patients with diabetic nephropathy and after myocardial infarction to improve survival. Their use is associated with a reduction in the progression of kidney disease in patients with diabetes.

Side Effects[edit]

Common side effects of ACE inhibitors include cough, hyperkalemia, and hypotension. Rarely, they can cause angioedema, a potentially life-threatening condition. Patients with renal artery stenosis or pregnancy should avoid ACE inhibitors due to the risk of adverse effects.

Also see[edit]

Template:Cardiovascular pharmacology