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Related Concept Videos

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...
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.
Osteoclasts in Bone Remodeling01:31

Osteoclasts in Bone Remodeling

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...
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...
Hormones and Bone Tissue01:17

Hormones and Bone Tissue

The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
The Effect of Aging on Tissues01:19

The Effect of Aging on Tissues

Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...

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Related Experiment Video

Updated: Jun 3, 2026

Studies on the Anti-Inflammatory Effect of Xiaoyao Pills in The Treatment of Postmenopausal Osteoporosis in Mice
07:20

Studies on the Anti-Inflammatory Effect of Xiaoyao Pills in The Treatment of Postmenopausal Osteoporosis in Mice

Published on: August 23, 2024

Osteoporosis: now and the future.

Tilman D Rachner1, Sundeep Khosla, Lorenz C Hofbauer

  • 1Division of Endocrinology, Diabetes, and Bone Diseases, Dresden Technical University Medical Centre, Dresden, Germany.

Lancet (London, England)
|April 1, 2011
PubMed
Summary

Osteoporosis treatment is advancing with new therapies targeting bone resorption and formation. Novel drugs like denosumab, odanacatib, and sclerostin/dickkopf-1 antibodies offer promising strategies for managing bone fragility.

Related Experiment Videos

Last Updated: Jun 3, 2026

Studies on the Anti-Inflammatory Effect of Xiaoyao Pills in The Treatment of Postmenopausal Osteoporosis in Mice
07:20

Studies on the Anti-Inflammatory Effect of Xiaoyao Pills in The Treatment of Postmenopausal Osteoporosis in Mice

Published on: August 23, 2024

Area of Science:

  • Bone biology and molecular signaling pathways.
  • Osteoporosis and its impact on bone health.

Background:

  • Osteoporosis causes systemic bone impairment, leading to fractures, with increasing prevalence in aging populations.
  • Understanding osteoblast and osteoclast communication is key to identifying new therapeutic targets.

Purpose of the Study:

  • To review novel therapeutic strategies for osteoporosis.
  • To discuss the underlying physiology of emerging osteoporosis treatments.

Main Methods:

  • Review of current scientific literature on osteoporosis and novel treatments.
  • Analysis of molecular insights into bone cell communication and signaling networks.

Main Results:

  • Identification of novel therapeutic targets by understanding bone biology.
  • Development of treatments to inhibit bone resorption and enhance bone formation.

Conclusions:

  • Novel therapies including denosumab, odanacatib, and antibodies against sclerostin/dickkopf-1 show promise.
  • These treatments target key pathways in osteoclast and osteoblast activity for osteoporosis management.