title: Kupffer cell proliferation and glucan-induced granuloma formation in mice depleted of blood monocytes by strontium-89.
abstract: In mice with prolonged severe monocytopenia induced by selective irradiation of the bone marrow with the bone-seeking isotope 89Sr, the proliferative capacity of Kupffer cells was studied by immunohistochemistry with an anti-mouse macrophage monoclonal antibody, F4/80, ultrastructural peroxidase (PO) cytochemistry, and tritiated thymidine (3HTdR) autoradiography. The number and 3HTdR uptake of Kupffer cells were significantly increased in the splenectomized mice after severe monocytopenia had continued for more than 4 wk, and almost all the Kupffer cells showed a localization pattern of PO activity similar to that of resident macrophages in the liver of normal mice. In the glucan-induced granuloma formation in similar monocytopenic mice, Kupffer cells proliferated, conglomerated, and transformed into epithelioid cells, which fused together to become multinuclear giant cells. These results suggest that Kupffer cells are a self-renewing population by their own cell division and can participate actively in granulomatous inflammations in severely monocytopenic and intact mice.
authors.affiliation: Second Department of Pathology, Kumamoto University Medical School, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Yamada
authors.forename: M
authors.initials: M
authors.lastname: Naito
authors.forename: K
authors.initials: K
authors.lastname: Takahashi
mesh_terms: D000818:Animals; D001853:Bone Marrow / Q000473:pathology / Q000528:radiation effects; D002455:Cell Division; D005260:Female; D005936:Glucans / Q000494:pharmacology*; D006099:Granuloma / Q000139:chemically induced* / Q000473:pathology; D006412:Hematopoietic Stem Cells / Q000187:drug effects / Q000528:radiation effects; D007728:Kupffer Cells / Q000502:physiology*; D008264:Macrophages / Q000502:physiology / Q000528:radiation effects; D051379:Mice; D008813:Mice, Inbred ICR; D009000:Monocytes / Q000502:physiology*; D010544:Peroxidases / Q000032:analysis; D013326:Strontium Radioisotopes
chemical_list: D005936:Glucans; D013326:Strontium Radioisotopes; D010544:Peroxidases