Hemoglobin oxidative stress in cancer

Area of Science:

• Biochemistry
• Oncology
• Hematology

Background:

• Free radicals are implicated in carcinogenesis, affecting the antioxidant balance.
• Oxidative stress from free radicals increases membrane permeability and alters hemoglobin.
• Previous studies show a link between free radicals, antioxidant status, and cancer development.

Purpose of the Study:

• To investigate in vitro methemoglobin formation after oxidative stress in cancer patients versus healthy donors.
• To explore the relationship between free radical-induced oxidative stress and methemoglobin levels in cancer.
• To assess the potential of methemoglobin formation as an early biomarker for tumorous alterations.

Main Methods:

• Blood samples from 40 cancer patients and 40 healthy donors were subjected to oxidative stress using acetylphenylhydrazine.
• In vitro methemoglobin formation was measured at 0 and 90 minutes using the HPLC method.
• Statistical analyses were performed to evaluate the significance of methemoglobin levels and influencing factors.

Main Results:

• Methemoglobin formation was significantly higher in cancer patients compared to healthy controls (P < 0.0001).
• Methemoglobin levels were not significantly affected by age, sex, smoking, or other hematological parameters.
• The study observed an abnormal response in erythrocyte membrane permeability and oxyhemoglobin denaturation in cancer patients.

Conclusions:

• Free radicals play a significant role in tumorous diseases by altering erythrocyte membrane permeability and oxyhemoglobin.
• Increased methemoglobin formation serves as a potential indicator of tumorous disease.
• The developed method offers a simple and effective approach for early detection of cancer-related alterations.