title: Structural and functional state of the bone marrow during its in vitro interaction with ferromagnetic nanoparticles.
abstract: Hemopoietic islets, associations of stromal (macrophages, fibroblasts) and blood (including stem) cells, are structural and functional units of the bone marrow. We studied cellular and molecular processes developing following short-term (1 h) contact of hemopoietic islets with ferromagnetic nanoparticles in a multicellular system of the bone marrow in vitro. It was established that nanodispersions of magnetite (Fe(3)O(4), mean particle diameter 18 nm) and iron coated with carbon (Fe(C), particle diameter 5-10 nm) in a dose of 3 mg/liter had a minor effect on processes of necrotic and apoptotic cell death. Nanodispersion of carbon-coated iron (Fe(C)) most mildly stimulated oxidizing processes recorded by intracellular levels of reactive oxygen species. These nanoparticles, in contrast to magnetite, did not reduce the amount of hemopoietic islets in the bone marrow cell suspension.
authors.affiliation: Siberian State Medical University, Tomsk, Russia.
authors.forename: V A
authors.initials: VA
authors.lastname: Novitsky
authors.forename: I A
authors.initials: IA
authors.lastname: Khlusov
authors.forename: N V
authors.initials: NV
authors.lastname: Ryazantseva
authors.forename: O E
authors.initials: OE
authors.lastname: Chechina
authors.forename: T A
authors.initials: TA
authors.lastname: Feduschak
authors.forename: A E
authors.initials: AE
authors.lastname: Ermakov
authors.forename: M A
authors.initials: MA
authors.lastname: Uimin
mesh_terms: D000818:Animals; D001854:Bone Marrow Cells / Q000378:metabolism / Q000502:physiology*; D005434:Flow Cytometry; D066298:In Vitro Techniques; D007501:Iron / Q000737:chemistry*; D008280:Magnetics; D053768:Metal Nanoparticles; D051379:Mice; D008807:Mice, Inbred BALB C; D017382:Reactive Oxygen Species
chemical_list: D017382:Reactive Oxygen Species; D007501:Iron