Macronutrient provision

Macronutrient provision is a clinical intervention rather than a specific molecular target, involving the delivery of essential energy substrates—carbohydrates, proteins, and fats—to patients unable to maintain adequate oral intake [1]. This process is vital in managing critical illness, major surgical recovery, and chronic malabsorptive disorders like short bowel syndrome to prevent protein-energy malnutrition and support metabolic homeostasis [2]. While not a single molecular target, it involves the exogenous supply of substrates that interact with various metabolic pathways, including insulin signaling and protein synthesis [3]. Proper management is essential to avoid complications like refeeding syndrome or metabolic overfeeding [1]. In the context of drug development, this target represents a physiological goal achieved through the use of medical foods and intravenous solutions [2]. Monitoring efficacy involves tracking biomarkers like nitrogen balance and serum proteins [3].

Other names

Nutritional supportParenteral nutritionEnteral nutritionMacronutrient therapyClinical nutrition

Provision of exogenous substrates (amino acids, lipids, and glucose) to maintain cellular energy, support protein synthesis, and prevent the catabolism of endogenous tissues during periods of metabolic stress or inadequate oral intake [1][3].