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Hypoalbuminemia: Pathogenesis and Clinical Significance.

Peter B Soeters1, Robert R Wolfe2, Alan Shenkin3

  • 1Department of Surgery, Maastricht University Medical Center, Maastricht, Netherlands.

JPEN. Journal of Parenteral and Enteral Nutrition
|October 6, 2018
PubMed
Summary

Hypoalbuminemia, a state of low serum albumin, is a marker of inflammation. Its management should focus on treating inflammation, not albumin infusion, to improve patient outcomes.

Keywords:
albumin infusionalbumin massalbumin scavengercapillary permeabilityfractional synthesis rate albumingrowthhypoalbuminemiaimmune responseinflammationinterstitial spacepregnancypubertyserum albumin binding proteinserum albumin indicator of inflammatory activityserum albumin risk factorvascular endothelial growth factor

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Area of Science:

  • Biochemistry
  • Clinical Medicine
  • Pathophysiology

Background:

  • Hypoalbuminemia is frequently observed in patients with inflammation, yet its underlying mechanisms and clinical importance remain unclear.
  • Inflammation increases capillary permeability, causing albumin to leak into the interstitial space, expanding its distribution volume.
  • The shortened half-life of albumin and increased leakage contribute to low serum albumin levels, even with elevated synthesis rates.

Purpose of the Study:

  • To clarify the pathogenesis and clinical significance of hypoalbuminemia in the context of inflammation.
  • To evaluate the role of albumin infusion versus inflammation management in treating hypoalbuminemia.
  • To explore the relationship between hypoalbuminemia, muscle mass decline, and overall patient prognosis.

Main Methods:

  • Literature review and synthesis of existing research on hypoalbuminemia, inflammation, and albumin metabolism.
  • Analysis of clinical data regarding the effects of albumin infusion on patient outcomes.
  • Examination of the association between aging, comorbidity, muscle mass, and serum albumin levels.

Main Results:

  • Hypoalbuminemia is a consequence and indicator of the inflammatory state, impacting responses to medical interventions and affecting quality of life and longevity.
  • Albumin infusion has not demonstrated significant benefits in reducing fluid requirements, infection rates, or mortality in intensive care units.
  • Decreasing serum albumin levels correlate with accelerated muscle mass loss, particularly in older adults and those with comorbidities.

Conclusions:

  • Effective management of hypoalbuminemia requires addressing the root causes of inflammation rather than relying on albumin supplementation.
  • Serum albumin levels serve as a valuable indicator of clinical improvement or deterioration.
  • Nutrition support and physical exercise can help mitigate age-related muscle loss, which is exacerbated by comorbidity and linked to declining albumin levels.