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Spectral Characteristics of Autofluorescence in Renal Tissue and Methods for Reducing Fluorescence Background in

Yang Zhang1, Yang Wang1,2, Wei-Wei Cao2

  • 1Department of Physiology, Shihezi University Medical College, 192 Beier Road, Shihezi, Xinjiang, 832002, People's Republic of China.

Journal of Fluorescence
|March 22, 2018
PubMed

Insights

Reducing renal tissue autofluorescence (AF) is crucial for immunofluorescence. Combining sodium borohydride (NaBH₄) and Sudan black B (SBB) effectively minimizes background AF, enhancing specific signal detection in kidney tissue.

Area of Science:

  • Renal pathology
  • Histology
  • Immunofluorescence microscopy

Background:

  • Autofluorescence (AF) in renal tissue significantly hinders immunofluorescent staining.
  • Identifying and mitigating AF sources is essential for accurate diagnostic interpretation.

Purpose of the Study:

  • To control renal tissue AF and optimize specific signals for immunofluorescence.
  • To evaluate the efficacy of sodium borohydride (NaBH₄) and Sudan black B (SBB) in reducing AF.

Main Methods:

  • Investigated AF in renal cells across different fluorescent channels.
  • Assessed AF reduction using varying concentrations of NaBH₄ and SBB, individually and combined.
  • Analyzed AF spectral properties using confocal λ scanning (480–590 nm).

Main Results:

  • Both NaBH₄ and SBB significantly reduced renal tissue AF in a concentration-dependent manner.
  • Sudan black B demonstrated a superior AF inhibitory effect compared to NaBH₄.
  • Combined NaBH₄ and SBB treatment effectively reduced background AF and optimized specific staining.

Conclusions:

  • Combined NaBH₄ and SBB treatment is a highly effective method for reducing renal tissue AF.
  • This method enhances the specificity of fluorescent labels without interfering with immunofluorescence protocols.
  • The findings support improved diagnostic accuracy in renal tissue analysis using immunofluorescence.
Keywords:
Autofluorescence of renal tissueConfocal λ (lambda) scanningImmunofluorescenceSodium borohydrideSudan black B

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