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Related Concept Videos

Bone Formation by Intramembranous Ossification01:29

Bone Formation by Intramembranous Ossification

Intramembranous ossification is one of the two processes involved in the development of bones within an embryo. The flat bones of the face, most of the cranial bones, and the clavicles are formed via this process. During intramembranous ossification, the bones develop directly from sheets of undifferentiated mesenchymal connective tissue.
The process begins when mesenchymal cells in the embryonic skeleton gather together and differentiate into osteogenic cells, which then develop into...
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Bone as Supporting Connective Tissue

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Bone Matrix
Bone, or osseous tissue, is a connective tissue that has a large amount of two different types of matrix material. The organic matrix is similar to the matrix material found in other connective tissues, including some amount of collagen and elastic fibers. This gives strength and flexibility to the tissue. The inorganic matrix consists of mineral salts— mostly calcium salts— that give the...
Bone Remodeling01:40

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Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
The Bone Matrix01:18

The Bone Matrix

Bone contains a relatively small number of cells entrenched in a matrix of collagen fibers that provide an adherent surface for inorganic salt crystals. Both components of the matrix, organic and inorganic, contribute to the unusual properties of bone. Without collagen, bones would be brittle and shatter easily. Without mineral crystals, bones would flex and provide little support. This can be observed by an experiment: when the minerals of a bone are dissolved by soaking the bone in acid or...
Bone Marrow Sampling and Transplants01:22

Bone Marrow Sampling and Transplants

Bone marrow transplant is a potential cure for several diseases, including cancer and specific genetic disorders. Notably, this procedure is applicable for patients suffering from aplastic anemia, certain types of leukemia, severe combined immunodeficiency disease (SCID), Hodgkin's disease, non-Hodgkin's lymphoma, multiple myeloma, thalassemia, sickle-cell disease, and certain cancers.
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Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during bone...

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Biological Compatibility Profile on Biomaterials for Bone Regeneration
10:28

Biological Compatibility Profile on Biomaterials for Bone Regeneration

Published on: November 16, 2018

Biomaterials and interface with bone.

K Anselme1

  • 1Institut de Science des Materiaux de Mulhouse, LRC CNRS 7228, Universite de Haute-Alsace, Mulhouse, France. k.anselme@uha.fr

Osteoporosis International : a Journal Established As Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA
|April 28, 2011
PubMed
Summary
This summary is machine-generated.

This study explores how nano- and micro-scale surface topography and chemistry impact cell and tissue behavior. Understanding these surface properties is crucial for predicting biological responses in various applications.

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Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Tissue Engineering

Background:

  • Cell and tissue response is significantly influenced by the physical and chemical characteristics of their surrounding environment.
  • The interplay between surface properties and biological systems is a key area of research in regenerative medicine and medical device development.

Purpose of the Study:

  • To illustrate the critical role of nano- and micro-scale surface topography and chemistry in modulating cell and tissue responses.
  • To provide examples from scientific literature and the author's experience to demonstrate these influences.

Main Methods:

  • Review of existing literature on surface science and cell-material interactions.
  • Presentation of case studies and experimental observations detailing surface property effects.
  • Analysis of how topographical and chemical cues at the nanoscale and microscale affect cellular behavior.

Main Results:

  • Surface topography at the nano- and micro-scale demonstrably alters cell adhesion, proliferation, and differentiation.
  • Surface chemistry, including material composition and surface energy, significantly influences cellular interactions and tissue integration.
  • Combined effects of topography and chemistry can lead to synergistic or antagonistic biological outcomes.

Conclusions:

  • Surface topography and chemistry are fundamental determinants of cell and tissue response.
  • Precise control over surface characteristics at the nano- and micro-scale is essential for designing effective biomaterials and medical implants.
  • Further research into surface-bio interactions will advance the fields of regenerative medicine and personalized therapies.