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Related Experiment Video

Updated: May 10, 2026

Picrosirius Red Staining for Semiquantitative Histopathologic Evaluation of Collagen Deposition in Murine Models of Chronic Lung Allograft Rejection
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Picrosirius Red Staining for Semiquantitative Histopathologic Evaluation of Collagen Deposition in Murine Models of Chronic Lung Allograft Rejection

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A simple dot-blot-Sirius red-based assay for collagen quantification.

Pilar Rodríguez-Rodríguez1, Silvia M Arribas, Angel Luis López de Pablo

  • 1Departamento de Fisiología, Facultad de Medicina, Universidad Autónoma de Madrid, Calle del Arzobispo Morcillo 4, 28029, Madrid, Spain.

Analytical and Bioanalytical Chemistry
|June 20, 2013
PubMed
Summary

A new, user-friendly method quantifies collagen in small tissue samples using Sirius red staining on PVDF membranes. This versatile technique measures both intact and hydrolyzed collagen, aiding disease research.

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Area of Science:

  • Biomedical Research
  • Biochemistry
  • Tissue Analysis

Background:

  • Collagen quantification is vital in biomedical research due to its alteration in various diseases.
  • Existing methods like hydroxyproline and Sirius red assays have limitations, including equipment costs, sample size requirements, and suitability for hydrolyzed collagen.
  • There is a need for a specific, versatile, and user-friendly collagen quantification method for small samples and elastin purification extracts.

Purpose of the Study:

  • To develop a novel, user-friendly quantitative method for collagen assessment.
  • The method aims to be versatile, applicable to small tissue samples and elastin purification extracts.
  • To enable simultaneous quantification of both collagen and elastin.

Main Methods:

  • A dot-blot technique immobilizing samples on a PVDF membrane.

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  • Utilizing Sirius red dye binding to collagen.
  • Quantification via scanner and image analysis software, with optimization of key parameters.
  • Method validated for intact and hydrolyzed collagen in rat tissues and extracts.

    • Main Results:

    • Successfully quantified intact collagen in various rat tissue homogenates, including small arteries.
    • Enabled quantification of partially hydrolyzed collagen from NaOH extracts, compatible with elastin purification.
    • Demonstrated the ability to detect collagen content differences between hypertensive and normotensive rats.
    • Showcased minimal interference from serum albumin.

    Conclusions:

    • The developed Sirius red-based dot-blot technique is a versatile, user-friendly, and specific method for collagen quantification.
    • It is suitable for small sample volumes and accommodates both intact and hydrolyzed collagen.
    • The method's ease of use, low cost, and reduced testing time make it widely applicable in biomedical research.