Murine neutrophils collected from subcutaneously implanted sponges.

Area of Science:

• Immunology
• Cell Biology

Background:

• Murine neutrophils (PMNs) are crucial immune cells.
• Obtaining sufficient quantities of functional PMNs for research can be challenging.

Purpose of the Study:

• To evaluate subcutaneously implanted polyvinyl sponges as a novel source for murine neutrophils (PMNs).
• To compare the yield, viability, chemotactic, and phagocytic activities of PMNs isolated from sponges versus peripheral blood.

Main Methods:

• Polyvinyl sponges were implanted subcutaneously in mice.
• Murine neutrophils (PMNs) were harvested from sponges and peripheral blood.
• Cell yield, viability, chemotactic activity, and phagocytic activity were assessed and compared.

Main Results:

• Sponge implantation yielded an average of 6.3 X 10(5) PMNs per mouse with 96.5% viability.
• Sponge-derived PMNs demonstrated significantly greater chemotactic activity (chemotactic index 4.78) than peripheral blood PMNs (2.16).
• Phagocytic activity and particle uptake were comparable between sponge and blood PMNs.

Conclusions:

• Subcutaneously implanted polyvinyl sponges are an effective method for isolating functional murine neutrophils (PMNs).
• This technique provides a viable alternative for obtaining PMNs with enhanced chemotactic properties for immunological studies.