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Lipopolysaccharides from Porphyromonas gingivalis, Prevotella intermedia and Actinobacillus actinomycetemcomitans promote osteoclastic differentiation in vitro. 1996

H O Ito, and T Shuto, and H Takada, and T Koga, and Y Aida, and M Hirata, and T Koga
Department of Oral Biochemistry, Kyushu University School of Dentistry, Fukuoka, Japan. hitoded@mbox.nc.kyushu-u.ac.jp

Bacterial lipopolysaccharides possess bone-resorbing activity. Here, lipopolysaccharides from three putative periodontopathic bacteria were examined for effects on osteoclast-like cell formation of bone marrow cells from lipopolysaccharide-responsive C3H-HeN and non-responsive C3H/HeJ mice. The bone marrow cells were cultured with or without various doses of lipopolysaccharide in the presence of 1,25-dihydroxyvitamin D3 and dexamethasone. These lipopolysaccharide preparations significantly increased the number of osteoclast-like cells formed in the culture of C3H/HeN marrow cells; the same as lipopolysaccharides from Escherichia coli and a synthetic lipid A with E. coli-type structure (LA-15-PP), at doses from 0.1 to 1 microgram/ml. This stimulating effect of each lipopolysaccharides was uniformly abrogated by the addition of polymyxin B at 5 micrograms/ml. All the lipopolysaccharide and the synthetic lipid A had no effect on osteoclast formation of the C3H/HeJ marrow cells, whereas lipopolysaccharide from Porphyromonas gingivalis and Prevotella intermedia showed significant mitogenic activity on C3H/HeJ spleen cells. It seems likely that the activity of lipopolysaccharides to augment osteoclast-like cell formation in the bone marrow cell cultures is derived from a common structure of the lipid A portion.

UI MeSH Term Description Entries
D007527 Isoenzymes Structurally related forms of an enzyme. Each isoenzyme has the same mechanism and classification, but differs in its chemical, physical, or immunological characteristics. Alloenzyme,Allozyme,Isoenzyme,Isozyme,Isozymes,Alloenzymes,Allozymes
D008050 Lipid A Lipid A is the biologically active component of lipopolysaccharides. It shows strong endotoxic activity and exhibits immunogenic properties.
D008070 Lipopolysaccharides Lipid-containing polysaccharides which are endotoxins and important group-specific antigens. They are often derived from the cell wall of gram-negative bacteria and induce immunoglobulin secretion. The lipopolysaccharide molecule consists of three parts: LIPID A, core polysaccharide, and O-specific chains (O ANTIGENS). When derived from Escherichia coli, lipopolysaccharides serve as polyclonal B-cell mitogens commonly used in laboratory immunology. (From Dorland, 28th ed) Lipopolysaccharide,Lipoglycans
D008297 Male Males
D008809 Mice, Inbred C3H An inbred strain of mouse that is used as a general purpose strain in a wide variety of RESEARCH areas including CANCER; INFECTIOUS DISEASES; sensorineural, and cardiovascular biology research. Mice, C3H,Mouse, C3H,Mouse, Inbred C3H,C3H Mice,C3H Mice, Inbred,C3H Mouse,C3H Mouse, Inbred,Inbred C3H Mice,Inbred C3H Mouse
D008815 Mice, Inbred Strains Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations, or by parent x offspring matings carried out with certain restrictions. All animals within an inbred strain trace back to a common ancestor in the twentieth generation. Inbred Mouse Strains,Inbred Strain of Mice,Inbred Strain of Mouse,Inbred Strains of Mice,Mouse, Inbred Strain,Inbred Mouse Strain,Mouse Inbred Strain,Mouse Inbred Strains,Mouse Strain, Inbred,Mouse Strains, Inbred,Strain, Inbred Mouse,Strains, Inbred Mouse
D008934 Mitogens Substances that stimulate mitosis and lymphocyte transformation. They include not only substances associated with LECTINS, but also substances from streptococci (associated with streptolysin S) and from strains of alpha-toxin-producing staphylococci. (Stedman, 25th ed) Mitogen,Phytomitogen,Phytomitogens
D010010 Osteoclasts A large multinuclear cell associated with the BONE RESORPTION. An odontoclast, also called cementoclast, is cytomorphologically the same as an osteoclast and is involved in CEMENTUM resorption. Odontoclasts,Cementoclast,Cementoclasts,Odontoclast,Osteoclast
D001853 Bone Marrow The soft tissue filling the cavities of bones. Bone marrow exists in two types, yellow and red. Yellow marrow is found in the large cavities of large bones and consists mostly of fat cells and a few primitive blood cells. Red marrow is a hematopoietic tissue and is the site of production of erythrocytes and granular leukocytes. Bone marrow is made up of a framework of connective tissue containing branching fibers with the frame being filled with marrow cells. Marrow,Red Marrow,Yellow Marrow,Marrow, Bone,Marrow, Red,Marrow, Yellow
D002454 Cell Differentiation Progressive restriction of the developmental potential and increasing specialization of function that leads to the formation of specialized cells, tissues, and organs. Differentiation, Cell,Cell Differentiations,Differentiations, Cell

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