An Insight into Pharmaceutical Design and Pharmacokinetic Characteristics of GLP-1 RAs

Introdcution: Glucagon-like peptide-1 receptor agonists (GLP-1 RAs) are among the most effective treatments for type 2 diabetes mellitus (T2DM). GLP-1 RAs stimulate pancreatic receptors, improving glycemia by boosting insulin secretion while decreasing glucagon secretion. GLP-1 receptors are present in pancreatic tissue. They are also found in extra-pancreatic tissue and have been shown to reduce body weight while also protecting the heart and endothelial cells. The most prevalent types of GLP-1 RAs can be injected twice daily (exenatide), once daily (lixisenatide and liraglutide), or once weekly (albiglutide, dulaglutide, exenatide once, semaglutide, tirzepatide). GLP-1 receptor agonists also reduce gastric emptying, preventing substantial post-meal glycaemic increases. Many publications have been written regarding GLP-1 RAs, covering various features of this family. However, the purpose of this study is to investigate the pharmacological design models and pharmacokinetic characteristics of the most regularly used members of this class, as well as to highlight contemporary developments in GLP-1 RAs. It also describes the physicochemical features, techniques of manufacture, the effects of molecular structure, and structural modifications on pharmacological activity. Methods: The literature review was completed using a structured approach to identify and integrate relevant literature. It involved a broad search of reputable medical databases using inclusion and exclusion criteria. Result: They are classified as short-acting or long-acting based on the length of their action. Short-acting GLP-1 RAs and long-acting GLP-1 RAs have differing efficacy profiles. Furthermore, the methods of administration, mode of action, and side effects of these medications are relevant to their pharmacological design and pharmacokinetic properties. Discussion: The treatment of type 2 diabetes and obesity has evolved with the advent of GLP-1 RAs. These drugs have a multifaceted approach, emphasizing glycemic regulation, weight loss, and reduction of cardiovascular risk. Their unique mode of action, strong safety profile, and ability to be individualized according to each patient's needs make them a valuable therapeutic option in the management of metabolic disorders. Their pharmacological activities are also influenced by their different structural and pharmacokinetic properties. Conclusion: GLP-1 RAs have a complex strategy due to their pharmacological nature. The variations in their design have led to various members with varying pharmacodynamic and pharmacokinetic features.