Results 311 to 320 of about 130,158 (334)
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Journal of Electron Microscopy, 2003
The mechanism by which bone collagen and other organic components are degraded by the osteoclast during osteoclastic bone resorption was unclear until the 1980s. Studies conducted since the early 1990s have identified lysosomal proteases, mainly cathepsins that are active at low pH, involved in osteoclastic bone resorption.
Teruo Tanaka +2 more
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The mechanism by which bone collagen and other organic components are degraded by the osteoclast during osteoclastic bone resorption was unclear until the 1980s. Studies conducted since the early 1990s have identified lysosomal proteases, mainly cathepsins that are active at low pH, involved in osteoclastic bone resorption.
Teruo Tanaka +2 more
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Current Opinion in Rheumatology, 2004
It is now dogma that osteoclasts (OCs) arise from cells of the monocyte/macrophage lineage. However, data are accumulating suggesting that a relationship exists between B lymphocytes (B cells) and OC differentiation. Although the exact nature of this relation is unknown, it takes at least two forms.
Mark C. Horowitz, Joseph A. Lorenzo
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It is now dogma that osteoclasts (OCs) arise from cells of the monocyte/macrophage lineage. However, data are accumulating suggesting that a relationship exists between B lymphocytes (B cells) and OC differentiation. Although the exact nature of this relation is unknown, it takes at least two forms.
Mark C. Horowitz, Joseph A. Lorenzo
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Transfection of Osteoclasts and Osteoclast Precursors
2011Osteoclasts and their precursors have traditionally been considered difficult cells to transfect using standard approaches. Here, we describe several methods for transfection of mature osteoclasts and their precursors using the Amaxa™ Nucleofector system, lentiviruses, and adenoviruses.
David Mellis +2 more
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Journal of Dental Research, 1966
SYNOPSIS IN INTERLINGUA HISTOGENESE DE OSTEOCLASTAS.— Rattos blanc esseva subjicite a duo injectiones de 200 unitates de Parathormon con un intervallo de 12 horas. Tres horas post le prime injection, thymidina a tritium esseva administrate. Autoradiogrammas del maxillas esseva preparate ab specimens colligite inter hora 6 e hora 72 a partir del ...
Patrick D. Toto, John J. Magon
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SYNOPSIS IN INTERLINGUA HISTOGENESE DE OSTEOCLASTAS.— Rattos blanc esseva subjicite a duo injectiones de 200 unitates de Parathormon con un intervallo de 12 horas. Tres horas post le prime injection, thymidina a tritium esseva administrate. Autoradiogrammas del maxillas esseva preparate ab specimens colligite inter hora 6 e hora 72 a partir del ...
Patrick D. Toto, John J. Magon
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Glucocorticoids and the Osteoclast
Annals of the New York Academy of Sciences, 2007Abstract: Glucocorticoid (GC)‐induced bone loss is the most common cause of secondary osteoporosis but its pathogenesis is controversial. GCs clearly suppress bone formation in vivo but the means by which they impact osteoblasts is unclear. Because bone remodeling is characterized by tethering of the activities of the two cells, the osteoclast is a ...
Haibo Zhao +7 more
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Biological Reviews, 1949
SummaryOsteoclasts, Kölliker's universal agent of bone destruction, must still be regarded as enigmatical structures. It is likely that their life span is limited to a few days. Regarded by some as resulting from fusion of relatively immobile individuals of connective tissue type, and by others of mobile cells such as macrophages, it seems a ...
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SummaryOsteoclasts, Kölliker's universal agent of bone destruction, must still be regarded as enigmatical structures. It is likely that their life span is limited to a few days. Regarded by some as resulting from fusion of relatively immobile individuals of connective tissue type, and by others of mobile cells such as macrophages, it seems a ...
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Osteoclasts and Integrins [PDF]
Annals of the New York Academy of Sciences, 2006 Abstract: The osteoclast is the unique bone resorptive cell that accomplishes its mission by forming an isolated acidified microenvironment between itself and the bone surface. Creation of this compartment is the first step in bone degradation and establishes that an intimate physical relationship must exist between the osteoclast and bone.
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Annals of the New York Academy of Sciences, 2010
Thirty‐five years ago it had become clear that the osteoclast was not a bone cell but an immigrant into bone, derived from the hemopoietic system. Among hemopoietic cells, mononuclear phagocytes seemed the most likely precursors. However, for the progeny of wandering cells such as those to achieve nonrandom localization implies control by the local ...
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Thirty‐five years ago it had become clear that the osteoclast was not a bone cell but an immigrant into bone, derived from the hemopoietic system. Among hemopoietic cells, mononuclear phagocytes seemed the most likely precursors. However, for the progeny of wandering cells such as those to achieve nonrandom localization implies control by the local ...
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Multinuclearity of Osteoclasts
Nature, 1963THE origin and function of the multinuclear osteoclast cell are of continuing interest among contemporary investigators, and have a long history among investigations on amphibian regeneration1,2.
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The osteoclast and periodontitis
Journal of Clinical Periodontology, 1986Abstract. The osteoclast may play an important rô le in the variable rate of osseous destruction seen in periodontitis. Current understanding of various aspects of the osteoclast may help explain this fact. This review paper will first look at two theories of cell origin of the osteoclast: the multipotential osteoprogenitor cell theory and the ...
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