title: [Stimulation of erythropoiesis in mice with mycoplasma infections].
abstract: Mycoplasma arthritidis was shown earlier to induce erythropoietin-independent erythropoiesis in infected mice. This study demonstrated the increased 59Fe incorporation in the mouse spleen as early as day 4 after infection with M. arthritidis. It is known that inoculation of mice with low doses of actinomycin D (Act D) results in a specific suppression of erythropoiesis without impairing the endogenous erythropoietin production. In this study the mice were injected with Act D (80 microgram/kg body weight) daily for 5 days. One hour after the last injection the mice were sublethally irradiated and then infected with either M. arthritidis or A. laidlawii. The effect of Act D was completely reversed by both mycoplasmas which was shown by means of endogenous colony formation (there was almost no endogenous colony formation in the spleen of non-infected mice that were given Act D). The data indicate that the target cells for the mycoplasmas probably reside within the population of primitive erythropoietin-independent precursors.
mesh_terms: D000128:Acholeplasma laidlawii; D000818:Animals; D003609:Dactinomycin; D004920:Erythropoiesis; D005260:Female; D006824:Hybridization, Genetic; D008297:Male; D051379:Mice; D008805:Mice, Inbred A; D008810:Mice, Inbred C57BL; D009175:Mycoplasma Infections / Q000503:physiopathology*
chemical_list: D003609:Dactinomycin
vernacular_title: O stimuliatsii éritropoéza pri mikoplazma-infektsii u mysheĭ.