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Related Concept Videos

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.
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...
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...
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...
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...

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Related Experiment Video

Updated: Jun 4, 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

Bisphosphonates for postmenopausal osteoporosis.

Richard Eastell1, Jennifer S Walsh, Nelson B Watts

  • 1National Institute for Health Research Biomedical Research Unit for Bone Disease, Centre for Biomedical Research, Northern General Hospital, Sheffield, South Yorkshire, England, UK. r.eastell@sheffield.ac.uk

Bone
|February 26, 2011
PubMed
Summary
This summary is machine-generated.

Bisphosphonates effectively treat osteoporosis in postmenopausal women by lowering bone turnover and fracture risk. Different bisphosphonate drugs offer varying potency and action speeds, influencing treatment choices.

Related Experiment Videos

Last Updated: Jun 4, 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:

  • Endocrinology
  • Bone Metabolism
  • Pharmacology

Background:

  • Osteoporosis significantly impacts postmenopausal women, increasing fracture risk.
  • Bisphosphonates are a cornerstone therapy for managing osteoporosis.
  • Understanding drug-specific characteristics is crucial for effective osteoporosis management.

Purpose of the Study:

  • To review the efficacy of bisphosphonates in postmenopausal osteoporosis.
  • To compare the pharmacological profiles of different bisphosphonate agents.
  • To identify areas of uncertainty in current bisphosphonate treatment guidelines.

Main Methods:

  • Literature review of bisphosphonate efficacy and pharmacology.
  • Analysis of clinical trial data on bone mineral density (BMD) and fracture reduction.
  • Discussion of current clinical practice and unresolved questions.

Main Results:

  • Bisphosphonates are proven to reduce bone turnover, increase BMD, and decrease fracture risk.
  • Licensed bisphosphonates vary in potency and onset/offset of action.
  • Optimal treatment duration, holiday strategies, and use with anabolic agents require further research.

Conclusions:

  • Bisphosphonates are effective osteoporosis treatments, with agent selection guided by individual patient needs and drug profiles.
  • Further research is needed to optimize bisphosphonate therapy duration and combination strategies.
  • The role of bisphosphonates in milder osteoporosis (BMD T-score > -2.5) warrants further investigation.