Related Experiment Videos
A thermoconductive and thermoselective leukocyte filter
1Department of Surgery, Baylor College of Medicine, Houston, Texas 77030, USA.
Artificial Organs
|February 1, 1995
Summary
A novel stainless steel fiber filter effectively removes over 99% of white blood cells (WBCs) and platelets. This thermoconductive filter shows selective leukocyte removal at elevated temperatures, offering potential for improved hemotherapy.
Area of Science:
- Biomedical Engineering
- Materials Science
- Immunology
Background:
- Superphysiological temperatures (>43°C) impact leukocyte properties.
- Heat treatment may alter immunological characteristics of leukocytes.
- Developing thermoconductive and thermoselective leukocyte filters is of interest.
Purpose of the Study:
- To develop a novel leukocyte filter using stainless steel fibers.
- To evaluate the thermoconductive and thermoselective properties of the filter.
- To assess the impact of temperature on leukocyte filtration efficiency.
Main Methods:
- A leukocyte filter was fabricated using stainless steel fibers.
- Filtration efficiency was tested at various temperatures (4°C, 20°C, 36°C, 50°C).
- The removal rates of white blood cells (WBCs), platelets, lymphocytes, and neutrophils were quantified.
Main Results:
- Over 99% of WBCs and platelets were removed using a 4-micron fiber filter.
- At 50°C, platelet removal was significantly suppressed (54%) compared to lower temperatures (approx. 95%).
- Lymphocyte removal was significantly lower than neutrophil removal at 50°C (69% vs. 83%, p=0.0002).
Conclusions:
- Ultrafine stainless steel fiber filters enable effective heat treatment and leukocyte removal.
- Temperature-dependent selectivity in leukocyte removal was demonstrated.
- This technology holds promise for applications requiring selective removal of blood components.