Efficient granulocyte collection method using high concentrations of medium molecular weight hydroxyethyl starch

Area of Science:

• Hematology
• Transfusion Medicine
• Nephrology

Background:

• Granulocyte transfusion therapy is vital for severe neutropenia.
• High molecular weight hydroxyethyl starch (hHES) aids granulocyte collection but poses renal risks.
• Medium molecular weight hydroxyethyl starch (HES130/0.4) presents a safer alternative, yet its efficacy in granulocyte collection requires comparison with hHES.

Purpose of the Study:

• To compare the granulocyte collection efficiency (CE) of HES130/0.4 with hHES.
• To evaluate the renal safety of HES130/0.4 in granulocyte collection procedures.

Main Methods:

• Retrospective analysis of 60 apheresis procedures on 40 healthy donors using the Spectra Optia system.
• Granulocyte collection methods were categorized based on HES130/0.4 concentration (m0.46, m0.44, m0.37, m0.8) and compared with hHES.
• Serum creatinine levels were monitored pre- and post-donation to assess renal function.

Main Results:

• The m0.8 group using HES130/0.4 and the hHES group showed significantly higher median granulocyte CE (24.0% and 28.1%, respectively) compared to other HES130/0.4 concentrations.
• No significant changes in serum creatinine were observed one month after HES130/0.4 mediated granulocyte collection.

Conclusions:

• HES130/0.4 can be employed for granulocyte collection with CE comparable to hHES.
• A high concentration of HES130/0.4 within the apheresis separation chamber is critical for optimal granulocyte yield.
• HES130/0.4 demonstrates a favorable renal safety profile, making it a viable alternative to hHES.