Dietary triglycerides, starches, and proteins

Dietary triglycerides, starches, and proteins are the primary macronutrients that undergo digestion in the intestinal lumen to provide the body with essential energy and molecular building blocks [1]. These molecules are not classical therapeutic targets like receptors or enzymes; rather, they serve as the substrates for various digestive enzymes secreted by the pancreas and brush border membrane [1][5]. Triglycerides are hydrolyzed by lipases into fatty acids and monoglycerides, starches are broken down by amylases and glucosidases into simple sugars, and proteins are cleaved by proteases into peptides and amino acids [1]. Pharmacological intervention often focuses on modulating the rate or extent of these digestive processes to treat metabolic diseases. For instance, lipase inhibitors like Orlistat are used to treat obesity by preventing the breakdown and subsequent absorption of dietary fats [2]. Alpha-glucosidase inhibitors, such as Acarbose, are employed in the management of type 2 diabetes to slow the conversion of starches into glucose, thereby reducing postprandial hyperglycemia [3]. Conversely, in conditions like exocrine pancreatic insufficiency, exogenous enzymes are administered to ensure these macronutrients are adequately digested to prevent malabsorption [4].

Other names

MacronutrientsDietary lipids, carbohydrates, and proteinsIntestinal luminal substratesDietary fats

Inhibition of digestive enzymes (e.g., pancreatic lipase, alpha-glucosidase) to prevent breakdown and absorption, or enzymatic replacement therapy to facilitate digestion.