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Enzyme resorb bone by mature osteoclasts

Use the link below to share a full-text version of this article with your friends and colleagues. Learn more. Adaptive modeling and remodeling are controlled by the activities of osteoblasts and osteoclasts, which are capable of sensing their mechanical environments and regulating deposition or resorption of bone matrix. The effects of mechanical stimuli on isolated osteoclasts have been scarcely examined because it has proven to be difficult to prepare a number of pure osteoclasts and to cultivate them on mineralized substratum during mechanical stimulation. The loading frequency, strain rate, and generated strain over an ivory surface could be controlled by a personal computer.
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Osteoclast

Enzyme resorb bone by mature osteoclasts
Enzyme resorb bone by mature osteoclasts
Enzyme resorb bone by mature osteoclasts
Enzyme resorb bone by mature osteoclasts
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Osteoclast - Wikipedia

However, there is an important difference: osteoclasts form and reside in the vicinity of bone, while FBGCs form only under pathological conditions or at the surface of foreign materials, like medical implants. Despite similarities, an important distinction between these cell types is that osteoclasts can resorb bone, but it is unknown whether FBGCs are capable of such an activity. Both cell types were cultured on bovine bone slices and analyzed for typical osteoclast features, such as bone resorption, presence of actin rings, formation of a ruffled border, and characteristic gene expression over time. Additionally, both cell types were cultured on a biomimetic hydroxyapatite coating to discriminate between bone resorption and mineral dissolution independent of organic matrix proteolysis.
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[Osteoclasts in bone metabolism].

This function is critical in the maintenance, repair, and remodelling of bones of the vertebral skeleton. The osteoclast disassembles and digests the composite of hydrated protein and mineral at a molecular level by secreting acid and a collagenase , a process known as bone resorption. This process also helps regulate the level of blood calcium. These may have dozens of nuclei, and typically express major osteoclast proteins but have significant differences from cells in living bone because of the not-natural substrate. In bone, osteoclasts are found in pits in the bone surface which are called resorption bays, or Howship's lacunae.
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Bone resorption plays an important role in bone modeling and remodeling. Osteoclasts are the cells responsible for the bone resorption. Osteoclasts are located on endosteal bone surfaces and on the periosteal surface beneath the periosteum.
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