peritoneal macrophage preparation

OUTLINE This modification of peritoneal macrophage preparation is designed for a subsequent thrombophagocytosis test.

PROTOCOL

Sacrifice a mouse (use dry ice, CO2)  Sink a mouse in the 5% water solution of Dettol (Chloroxylenol) for 1 min, at RT. Dry the fur thoroughly. Inject i.p. 5 ml of ice-cold IDDM-FCS (5%, decomplimented). Gently massage the anterior and lateral walls of the abdomen. Dissect the tissues and open the peritoneum cavity. Accurately collect the peritoneum washes on to the Petri dish placed on ice. Filter the washes thorough a nylon filter into the 15 ml Falcon tube placed on ice. Centrifuge at 1200 rpm, at 4ѓC, for 5 min. Resuspend in IMDM-FCS (5%, decomplimented) Count cells (do not count erythrocytes). Adjust the concentration of counted cells as 20x10^6/ml

SOLUTIONS IMDM-FCS 5%, decomplemented (heat for 30 min at 56ѓC)

ADDITIONAL INFO

All solutions should be sterile! Add NH4 Cl, 160 mM right after the first centrifugation if the osmatic shock needed (elimination of erythrocytes).

SCHEME REFERENCES

Celada, A. and Nathan, C. (1994). Macrophage activation revisited. Immunol Today 15(3): 100-2. Gordon, S., Keshav, S. and Chung, L.P . (1988). Mononuclear phagocytes: tissue distribution and functional heterogeneity. Curr Opin Immunol 1(1): 26-35.