Protein Supplementation in Burn Patients

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Continuous nutritional implications are to follow any severe burn injury that's greater than thirty percent of our body surface. For the optimal treatment of such patients it's important to know the nature of this response and the resultant changes in nutritional requirements. Approximately one hundred percent of resting energy may be exhausted following a burn injury. Increased heat loss from the burn wound and increased beta adrenergic activity are probably both vital factors that cause an increase within the resting energy expenditure. Amplified evaporative heat loss is experienced via the wound also because burned skin loses its effectiveness as a barrier to water loss. In addition, radiation heat loss is increased from burn wounds. This is caused through the increased blood supply at the burn wound, which is a normal reaction to any injury.

Major trauma, burns and sepsis have in common a rapid net catabolism of body protein, plus a redistribution of the nitrogen pool inside the body. Inside the liver certain quickly produced 'acute-phase' proteins are produced at an increased rate, muslce protein is broken down at an accelerated rate too, and wound repair needs amino acids for protein synthesis and amplified immunological activity may also need accelerated protein synthesis. Following a severe burn, an increased calorie requirement for healing is present, since the body loses protein through wounds. In an attempt to reduce net protein catabolism there will be an amplified requirement for dietary protein and/or free-form amino acids. This increased protein utilization won't prevent the muscle protein from being broken down for energy production but it will supply the supplies needed to produce the lost tissue. To maintain a positive nitrogen balance a rise in protein intake is essential since the mild stress of simple bedrest will necessitate it.

It is recommended that protein be provided to adults at a rate between 1.2 and 1.5 grams of protein per kilogram per day. Children normally need more protein than adults in order to support growth. It's counseled that pediatric patients with burn injuries be given as much as 3 grams of protein per kilogram each day due to the fact that children normally need more protein than adults in order to support growth. In youngsters, just about 25% of total energy should come from protein.

In patients with major burn injuries, infection remains the foremost cause of death. Immune consequences of this injury are identified like deficits in neutrophils chemo taxis, phagocytosis, and intracellular bacterial killing. Cell-mediated immunity, as measured by skin testing, additionally is compromised and has been connected to both decreased lymphocyte activation and suppressive mediators present within the serum of burn patients. A reduction in immunoglobulin synthesis also has been encountered in these seriously unwell patients.

Whey is among the proteins found in milk (another is casein). These proteins structure 100% of the protein within milk of which eighty percent is casein and approximately twenty percent is whey. Whey protein is abundant with certain amino acids and low in fat. The important amino acids, which also are branched chain amino acids, are leucine, valine and isoleucine. The amino acid profile of whey makes it ideal for supporting protein synthesis, muscle growth and body composition.

Another amino acid, cysteine, will be found in relatively high amounts in whey protein. Augmenting the availability of cysteine in diet has been found to enhance immune function, enhance resistance to infection, and elevate glutathione (GSH) levels (an antioxidant enzyme containing cysteine). In the immune response cysteine will be the evident rate-limiting thing in the synthesis of glutathione to refill the cell's store. GSH plays a central role within the functioning of immune cells, in specific its creation and maintenance of T-cell lymphocytes, your body's frontline defense against infection. Oxidative damage can be minimized by maintaining high intracellular GSH levels, which will also help forestall disease and aid recovery.

Whey protein additionally contains lactoferrin, a protein that has been shown to possess bacteriostatic and bactericidal activity. Studies on lactoferrin have demonstrated its ability to activate natural killer cells and neutrophils, induce colony-stimulating issue activity, and enhance macrophage cytotoxicity. Furthermore, lactoferrin has antiviral, antifungal, and antibacterial properties. The antimicrobial impact is doubtless stronger in organisms that require iron to duplicate, as lactoferrin has the unique ability to chelate iron in a method that deprives microorganisms of this essential nutrient for growth

A significant factor of whey protein is termed lactalbumin and has been found to raise brain serotonin and reduce cortisol concentration and improve mood under stress.

Casein is known to form a clot within the stomach. This clot makes nutrient supply in your body more efficient. The clot holds for several hours and is fantastic in slowing the release of amino acids into the blood stream. This will usually aid in meeting the demand of our bodies for an increased supply of amino acids, providing energy, and promoting protein synthesis.

References

1. Pasulka PS, Wachtel TL: Nutritional considerations for the burned patient. Surg Clin North Am 1987 Feb; 67(1): 109-31.

2. WOLFE, R.R.: Caloric requirements of the burned patients. J. Trauma, 21, 712-714 (1981).

3. Wolfe, R.R., Goodenough, R.D., Burke, J.F., Wolfe, M.H.: Response of protein and urea kinetics in burn patients to different levels of protein intake. Ann. Surg., 197, 163-171 (1983).

4. Boirie Y, Dangin, M, Gachon P, Vasson, M.P et al. (1997) Slow and fast dietary proteins differently modulate postprandial protein accretion. Proclamations of National Academy of Sciences, 94: 14930-14935.

5. Counous, G (2000). Whey protein concentrates (WPC) and glutathione modulation in cancer treatment. Anticancer Research, 20: 4785-4792.

6. Lands LC, Grey VL, Smountas AA (1999). Effect of supplementation with a cysteine donor on muscular performance. J Appl Physiol 87:1381-1385.

7. Arnal MA, Mosoni L, Boirie Y, et al (1999). Protein pulse feeding improves protein retention in elderly women. Am J Clin Nutr; 69: 1202-1208.

8. MacKay D. Miller AL, 2003. Nutritional support for wound healing. Altern Med Rev; 8:359-377



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