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Updated: Apr 25, 2026
In Vivo, Percutaneous, Needle Based, Optical Coherence Tomography of Renal Masses
Published on: March 30, 2015
Identification of kidney tumor tissue by infrared spectroscopy of extracellular matrix
Vidita Urboniene1, Milda Pucetaite1, Feliksas Jankevicius2
1Vilnius University, Department of General Physics and Spectroscopy, Sauletekio av. 9 bl. 3, Vilnius, LT-10234, Lithuania.
Abstract:
Fourier transform infrared (FT-IR) spectroscopy was applied to characterize the extracellular matrix (ECM) of kidney tumor tissue and normal kidney tissue. Freshly resected tissue samples from 31 patients were pressed on a CaF₂ substrate. FT-IR spectra obtained from ECM of tumor tissue exhibit stronger absorption bands in the spectral region from 1000 to 1200 cm⁻¹ and around 1750 cm⁻¹ than those obtained from normal tissue. It is likely that the spectra of ECM of kidney tumor tissue with large increases in the intensities of these bands represent a higher concentration of fatty acids and glycerol. Amide I and amide II bands are stronger in the spectra of ECM from normal tissue, indicating a higher level of proteins. Our results suggest that FT-IR spectroscopy of the ECM is an innovative emerging technology for real-time intraoperative tumor diagnosis, which may improve margin clearance in renal cancer surgery.
Insights
Fourier transform infrared (FT-IR) spectroscopy differentiates kidney tumor extracellular matrix (ECM) from normal tissue by analyzing spectral differences. This technique shows potential for real-time intraoperative diagnosis in renal cancer surgery.
Area of Science:
- Biomedical Engineering
- Spectroscopy
- Oncology
Background:
- Accurate intraoperative diagnosis of kidney tumors is crucial for effective surgical treatment and patient outcomes.
- Characterizing the extracellular matrix (ECM) can provide insights into tissue pathology.
- Fourier transform infrared (FT-IR) spectroscopy offers a non-destructive method for biochemical analysis.
Purpose of the Study:
- To investigate the potential of FT-IR spectroscopy for differentiating kidney tumor ECM from normal kidney ECM.
- To identify spectral biomarkers indicative of kidney cancer within the ECM.
- To evaluate FT-IR spectroscopy as a tool for real-time intraoperative diagnosis in renal cancer surgery.
Main Methods:
- FT-IR spectroscopy was employed to analyze freshly resected kidney tissue samples from 31 patients.
- Spectra were obtained from the ECM of both tumor and normal kidney tissues.
- Comparative analysis of spectral features, specifically absorption bands, was performed.
Main Results:
- Kidney tumor ECM exhibited stronger absorption bands between 1000-1200 cm⁻¹ and around 1750 cm⁻¹ compared to normal tissue.
- These increased band intensities in tumor ECM suggest a higher concentration of fatty acids and glycerol.
- Normal kidney ECM showed stronger Amide I and Amide II bands, indicating a higher protein content.
Conclusions:
- FT-IR spectroscopy effectively distinguishes the biochemical composition of kidney tumor ECM from normal ECM.
- The identified spectral differences hold promise for developing novel diagnostic markers for renal cancer.
- FT-IR spectroscopy represents an innovative technology for real-time intraoperative tumor diagnosis, potentially enhancing surgical margin assessment in renal cancer surgery.
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