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Cystatin C: current position and future prospects.

Sophie Séronie-Vivien1, Pierre Delanaye, Laurence Piéroni

  • 1Département de Biologie Clinique, Institut Claudius Regaud, Université Paul Sabatier, Toulouse, France. seronie-vivien.sophie@claudiusregaud.fr

Clinical Chemistry and Laboratory Medicine
|November 1, 2008
PubMed
Summary
This summary is machine-generated.

Cystatin C, a protein marker, shows promise for assessing kidney function, potentially replacing creatinine. Its levels reflect glomerular filtration, offering advantages in diverse patient groups and emerging clinical applications.

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Area of Science:

  • Biochemistry
  • Nephrology
  • Clinical Chemistry

Background:

  • Cystatin C is a low-molecular-weight protein proposed as a superior marker of renal function compared to creatinine.
  • Its concentration is primarily influenced by glomerular filtration rate (GFR).
  • Creatinine's accuracy is limited by muscle mass variations, making cystatin C valuable in specific populations.

Purpose of the Study:

  • To review the physiology of cystatin C.
  • To summarize its utility as a marker for renal function, including its use in GFR estimation equations.
  • To explore emerging clinical applications beyond renal function assessment.

Main Methods:

  • Literature review of studies on cystatin C.
  • Analysis of physiological data related to cystatin C production and clearance.
  • Evaluation of clinical studies assessing cystatin C in various populations and conditions.

Main Results:

  • Cystatin C levels correlate with glomerular filtration.
  • Numerous studies support its use in assessing renal function across different populations.
  • Emerging applications in cardiology, oncology, and clinical pharmacology are identified.

Conclusions:

  • Cystatin C is a reliable marker for renal function, particularly beneficial when creatinine-based assessments are compromised.
  • Its role extends to GFR estimation and shows potential in other medical fields.
  • Further research into its diverse applications is warranted.