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Related Concept Videos

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...
Essential Minerals for Bone Health01:31

Essential Minerals for Bone Health

The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect bone health.
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...
Bone Remodeling01:40

Bone Remodeling

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.
Bone Disorders01:29

Bone Disorders

Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Role of Vitamins in Maintaining Bone Health01:25

Role of Vitamins in Maintaining Bone Health

The growth and maintenance of bone are regulated by a combination of nutritional factors, including vitamins, such as vitamin A, B12, C, D, and K.
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
Bone Remodeling and Repair01:31

Bone Remodeling and Repair

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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Related Experiment Video

Updated: May 17, 2026

Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect
09:35

Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect

Published on: September 11, 2015

Nanostructured magnesium increases bone cell density.

Lucy Weng1, Thomas J Webster1

  • 1School of Engineering and Department of Orthopedics, Brown University, Providence, RI 02912, USA.

Nanotechnology
|November 10, 2012
PubMed
Summary
This summary is machine-generated.

Treating magnesium with sodium hydroxide (NaOH) creates nanoscale surface features that enhance osteoblast adhesion and density. This simple modification improves magnesium

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Area of Science:

  • Biomaterials Science
  • Orthopedic Research
  • Surface Chemistry

Background:

  • Magnesium's biodegradability and mechanical properties make it promising for orthopedic implants.
  • Magnesium's degradation produces alkaline conditions detrimental to bone cells (osteoblasts).
  • Surface modification is needed to mitigate adverse effects and enhance cellular response.

Purpose of the Study:

  • To create nanoscale surface features on magnesium via NaOH treatment.
  • To evaluate the impact of these features on osteoblast adhesion and proliferation.
  • To determine if NaOH treatment can improve magnesium's biocompatibility for orthopedic applications.

Main Methods:

  • Magnesium samples were soaked in varying concentrations of sodium hydroxide (NaOH) solutions (1-10 N).
  • Treatment durations ranged from 10 to 30 minutes.
  • Osteoblast adhesion and density were assessed on treated and untreated magnesium surfaces over 7 days.

Main Results:

  • NaOH treatment resulted in increased surface roughness and surface energy of magnesium.
  • Significantly greater osteoblast adhesion was observed after 4 hours on treated magnesium.
  • Enhanced osteoblast density was maintained up to 7 days on treated magnesium compared to controls.

Conclusions:

  • Soaking magnesium in NaOH is a simple, inexpensive method to create biocompatible surfaces.
  • This surface modification promotes osteoblast function, including adhesion and proliferation.
  • NaOH-treated magnesium shows potential for enhanced orthopedic applications.