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[The effect of phenazine methosulfate on human erythrocytes]
Abstract:
The experimental data about the phenazine methosulfate (PMS) effect on human erythrocytes are considered. It is demonstrated that PMS well penetrates the cells and causes changes dependent on incubation time. PMS may possess either oxidative or reducing properties according to experimental conditions. The PMS potency for oxidation is revealed in change of the haemoglobin redox state to more oxidative one (MetHb), in decrease of the reducing glutathione level and in increase of the reducing rate of potassium ferricyanide (RRPF). The use of erythrocytes oxidated by sodium oxide demonstrates the PMS reducing properties which cause reduction of methaemoglobin (MetHb) and decrease of the sodium oxide inhibitory effect on RRPF. Based on the obtained data a scheme is proposed for the PMS action on erythrocytes implying three interaction centres within the cells.
Insights
Phenazine methosulfate (PMS) affects human red blood cells, showing both oxidative and reducing properties. Its effects depend on incubation time and experimental conditions, influencing hemoglobin and glutathione levels.
Area of Science:
- Biochemistry
- Cell Biology
- Hematology
Context:
- Phenazine methosulfate (PMS) is a redox agent with known biological activity.
- Human erythrocytes (red blood cells) are crucial for oxygen transport and are susceptible to oxidative stress.
- Understanding the interaction of redox agents with erythrocytes is vital for hematology and toxicology.
Purpose:
- To investigate the dual oxidative and reducing properties of phenazine methosulfate (PMS) on human erythrocytes.
- To elucidate the time-dependent effects of PMS on erythrocyte intracellular components and redox state.
- To propose a model for the mechanism of PMS interaction within erythrocytes.
Summary:
- Phenazine methosulfate (PMS) readily penetrates human erythrocytes, inducing time-dependent changes.
- PMS exhibits oxidative effects, increasing methemoglobin (MetHb) and decreasing reduced glutathione, while also showing reducing properties by reducing MetHb in pre-oxidized erythrocytes.
- The study proposes a model with three interaction centers to explain PMS action on erythrocytes.
Impact:
- Provides insights into the complex redox behavior of PMS in a cellular environment.
- Contributes to understanding how exogenous redox agents can modulate erythrocyte function and integrity.
- Informs potential applications or risks associated with PMS in biological systems, particularly concerning red blood cell health.