Comparison between concentrations of trace elements in normal and neoplastic human breast tissue

Area of Science:

• Oncology
• Biochemistry
• Trace Element Analysis

Background:

• Trace elements play crucial roles in biological processes.
• Alterations in trace element concentrations have been implicated in various diseases, including cancer.
• Understanding these changes in breast cancer may offer insights into disease mechanisms.

Purpose of the Study:

• To investigate and quantify trace element differences between normal and neoplastic human breast tissues.
• To compare tissue trace element levels with corresponding blood and urine concentrations.
• To explore potential correlations between trace element profiles and breast cancer characteristics.

Main Methods:

• Human breast tissues from 25 mastectomy patients were analyzed.
• Energy-dispersive X-ray fluorescence was used for trace element detection.
• Elements measured included calcium, vanadium, copper, zinc, selenium, rubidium, and nickel, among others.

Main Results:

• Breast tumors exhibited significantly higher concentrations of calcium, vanadium, copper, zinc, selenium, and rubidium (p < 0.001).
• Nickel levels were also elevated (p < 0.05) in tumors.
• Zinc and rubidium were consistently higher in tumor tissue compared to adjacent normal tissue from the same patient.

Conclusions:

• Significant alterations in trace element profiles, particularly elevated zinc and rubidium, characterize human breast tumors.
• Observed tissue elemental changes were not mirrored in blood but showed varied patterns in urine.
• Further research is needed to correlate these findings with disease progression and treatment outcomes.