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Updated: Jun 28, 2026
19:16
The Importance of Correct Protein Concentration for Kinetics and Affinity Determination in Structure-function Analysis
Published on: March 17, 2010
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
Summary
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.
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.
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