The effect of intracellular Chlamydia psittaci on lysosomal enzyme activities in mouse peritoneal macrophages.
Live or heat killed (30 min at 56 degrees C) Chlamydia psittaci elementary bodies (EB) were phagocytosed by mouse peritoneal macrophages. Inoculation with killed Chlamydia caused rises in three lysosomal enzyme activities tested, especially in acid phosphatase activity. In contrast, after infection with live Chlamydia, only a negligible increase was seen in acid phosphatase activity, and no change in the activities of beta-glucuronidase and cathepsin D was observed. It was concluded that regulation of lysosomal enzyme synthesis in macrophages may be linked to signals mediated by phago-lysosome fusions.
Mørland
B
B
Council for Medical Research, Norwegian Research Council for Science and the Humanities, Oslo, Norway.
Byrne
G I
GI
Jones
T C
TC
D000135:Acid Phosphatase / Q000378:metabolism; D000818:Animals; D002402:Cathepsin D / Q000378:metabolism; D002691:Chlamydophila psittaci / Q000276:immunology*; D005966:Glucuronidase / Q000378:metabolism; D066298:In Vitro Techniques; D008247:Lysosomes / Q000201:enzymology*; D008264:Macrophages / Q000201:enzymology / Q000276:immunology / Q000382:microbiology*; D051379:Mice; D008805:Mice, Inbred A; D010587:Phagocytosis
D000135:Acid Phosphatase; D005966:Glucuronidase; D002402:Cathepsin D