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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.
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...
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...
Skeleton and Calcium Homeostasis01:21

Skeleton and Calcium Homeostasis

Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.
Cholesterol: Significance and Regulation01:29

Cholesterol: Significance and Regulation

Although not a source of energy, cholesterol plays a significant role as a foundational structure for bile salts, steroid hormones, and vitamin D, as well as being a crucial component of plasma membranes. Approximately 15% of blood cholesterol is derived from our diet, with the remainder synthesized from acetyl CoA by the liver and intestines. Cholesterol is eliminated from the body through its conversion into bile salts, which are eventually discarded in the feces.
Considering cholesterol and...

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Related Experiment Video

Updated: Jul 8, 2026

A Novel in vivo Gene Transfer Technique and in vitro Cell Based Assays for the Study of Bone Loss in Musculoskeletal Disorders
11:47

A Novel in vivo Gene Transfer Technique and in vitro Cell Based Assays for the Study of Bone Loss in Musculoskeletal Disorders

Published on: June 8, 2014

Increased bone turnover in patients with hypercholesterolemia.

Takafumi Majima1, Akira Shimatsu, Yasato Komatsu

  • 1Division of Endocrinology and Metabolism, Clinical Research Institute for Endocrine Metabolic Diseases, National Hospital Organization, Kyoto Medical Center, Japan.

Endocrine Journal
|January 26, 2008
PubMed
Summary

Hypercholesterolemia is linked to increased bone turnover in both men and women. This suggests managing high cholesterol may prevent bone loss and fractures, alongside vascular disease.

Related Experiment Videos

Last Updated: Jul 8, 2026

A Novel in vivo Gene Transfer Technique and in vitro Cell Based Assays for the Study of Bone Loss in Musculoskeletal Disorders
11:47

A Novel in vivo Gene Transfer Technique and in vitro Cell Based Assays for the Study of Bone Loss in Musculoskeletal Disorders

Published on: June 8, 2014

Area of Science:

  • Endocrinology
  • Bone Metabolism
  • Cardiovascular Health

Background:

  • Osteoporosis and arteriosclerotic vascular diseases share potential links, possibly through hypercholesterolemia or dyslipidemia.
  • The precise relationship between osteoporosis and hypercholesterolemia remains unclear.
  • Understanding this connection is crucial for comprehensive disease prevention.

Purpose of the Study:

  • To investigate the impact of hypercholesterolemia on bone metabolism.
  • To measure bone turnover markers in hypercholesterolemic individuals.

Main Methods:

  • Study included 281 Japanese hypercholesterolemic patients and 267 controls.
  • Measured serum bone-specific alkaline phosphatase (BAP) and N-terminal telopeptide of type I collagen (NTx).
  • Analyzed correlations between bone markers and lipid profiles (HDL-C, total cholesterol, LDL-C).

Main Results:

  • Hypercholesterolemic women showed significantly higher BAP than controls.
  • Both men and women with hypercholesterolemia had significantly higher NTx levels.
  • Bone turnover markers correlated differently with lipid profiles in men versus women.

Conclusions:

  • Hypercholesterolemia and dyslipidemia are associated with increased bone turnover in both genders.
  • Managing dyslipidemia may be important for preventing osteoporotic bone loss and fractures.
  • This highlights a potential dual benefit of lipid-lowering therapies for vascular and bone health.