Chlorpromazine-induced decrease of red cell aggregability

Area of Science:

• Pharmacology
• Hematology
• Psychiatry

Background:

• Erythrocyte membrane binding of chlorpromazine may affect cell rheology.
• Understanding drug effects on blood cell properties is crucial for therapeutic applications.

Purpose of the Study:

• To investigate the impact of chlorpromazine on erythrocyte aggregability and deformability.
• To assess changes in rheological properties following acute and chronic administration of chlorpromazine and haloperidol.

Main Methods:

• Filtrability tests were employed to measure erythrocyte aggregability and deformability.
• Study involved male patients (aged 20-27) with neurosis or personality disorders.
• Measurements were taken before and after drug administration (chlorpromazine and haloperidol).

Main Results:

• Five-day oral chlorpromazine treatment significantly decreased erythrocyte aggregability (p < 0.02).
• The effect was more pronounced in patients with initially high aggregability values (p < 0.01).
• Acute intramuscular chlorpromazine and haloperidol treatment showed no significant rheological changes.

Conclusions:

• Chronic chlorpromazine administration alters erythrocyte aggregability, potentially impacting blood flow.
• The findings may have implications for erythrocyte sedimentation rate (ESR) determination.
• Further research is warranted to explore therapeutic applications in occlusive vascular diseases.