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Updated: Oct 16, 2025
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A Rapid and Chemical-free Hemoglobin Assay with Photothermal Angular Light Scattering
Published on: December 7, 2016
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Raman Spectroscopic Study of TiO2 Nanoparticles' Effects on the Hemoglobin State in Individual Red Blood Cells
Elena Perevedentseva1,2, Yu-Chung Lin1, Artashes Karmenyan1
1Department of Physics, National Dong Hwa University, Hualien 974301, Taiwan.
Materials (Basel, Switzerland)
|October 23, 2021
Summary
Titanium dioxide nanoparticles (TiO2 NP) interact with red blood cells (RBC), affecting hemoglobin oxygenation. While not penetrating RBC, TiO2 NP adsorption impacts blood cell function, with implications for medical applications.
Area of Science:
- Nanomaterials Science
- Biomedical Engineering
- Hematology
Background:
- Titanium dioxide (TiO2) nanoparticles are used in sunscreens and explored for medical therapies.
- Understanding TiO2 nanoparticle effects on blood components is crucial for safe medical applications.
Purpose of the Study:
- To investigate TiO2 nanoparticle interactions with rat red blood cells (RBC).
- To assess the influence of TiO2 nanoparticles on red blood cell oxygenation and hemoglobin functionality.
Main Methods:
- Analysis of TiO2 nanoparticle interactions with individual rat RBCs.
- Utilizing Raman spectroscopy to study hemoglobin (Hb) oxygenation state and NP localization on RBCs.
- Comparing anatase and rutile crystal phases of TiO2 nanoparticles.
Main Results:
- TiO2 nanoparticles adsorbed onto the RBC membrane but did not penetrate the cells.
- Adsorbed TiO2 nanoparticles altered hemoglobin's oxygenation state, causing partial deoxygenation.
- A photothermal effect of TiO2 nanoparticles on hemoglobin under laser excitation was observed.
Conclusions:
- TiO2 nanoparticle interaction with RBC membranes can affect hemoglobin functionality.
- Potential implications for the safety and efficacy of TiO2-based photothermal therapies are highlighted.
- Further research is needed to fully understand the blood system's response to TiO2 nanoparticles in medical contexts.
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