Trace element concentration distributions in breast, lung and colon tissues
Urszula Majewska1, Dariusz Banaś, Janusz Braziewicz
1Institute of Physics, Swietokrzyska Academy, Swietokrzyska 15, 25-406 Kielce, Poland.
Physics in Medicine and Biology
|August 1, 2007
Summary
This study analyzed essential element concentrations (Fe, Cu, Zn, Se) in cancerous and benign breast, lung, and colon tissues. Significant differences were observed between tissue types and organs, highlighting potential biomarkers for cancer detection.
Area of Science:
- Biochemistry
- Oncology
- Trace Element Analysis
Background:
- Trace elements like iron (Fe), copper (Cu), zinc (Zn), and selenium (Se) play crucial roles in biological processes.
- Altered elemental concentrations are implicated in various cancers, but comparative analyses across different organs are complex.
Purpose of the Study:
- To determine and compare the concentrations of Fe, Cu, Zn, and Se in cancerous and benign tissues from the breast, lung, and colon.
- To identify statistically significant differences in elemental distributions between normal and malignant tissues within and across organs.
Main Methods:
- Elemental concentrations were measured in tissue samples.
- The Kaplan-Meier method was employed for data reconstruction and estimation of true mean concentrations and medians when data was incomplete.
- The log-rank test was used to compare elemental concentration distributions.
Main Results:
- Statistically significant differences in Fe and Se concentrations were found between benign and malignant breast tissues.
- Cu and Zn showed significant differences in lung tissues, while Zn showed differences in colon tissues.
- All elements exhibited statistically different concentrations when comparing different organs (breast-colon, breast-lung) in both benign and cancerous tissues. Fe and Cu differed significantly in cancerous lung vs. colon tissues, and Zn differed in benign lung vs. colon tissues.
Conclusions:
- Elemental concentration profiles differ significantly between benign and malignant tissues within specific organs (breast, lung, colon).
- Organ-specific elemental signatures exist, with significant variations observed across breast, lung, and colon tissues for both normal and cancerous states.
- These findings suggest that specific trace elements may serve as potential biomarkers for distinguishing between normal and cancerous tissues and for characterizing different cancer types.
