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Related Concept Videos

Bone Disorders01:29

Bone Disorders

6.0K
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...
6.0K
Role of Vitamins in Maintaining Bone Health01:25

Role of Vitamins in Maintaining Bone Health

5.9K
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...
5.9K
Osteoclasts in Bone Remodeling01:31

Osteoclasts in Bone Remodeling

4.6K
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...
4.6K
Bone Remodeling01:40

Bone Remodeling

40.9K
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.
40.9K
Hormones and Bone Tissue01:17

Hormones and Bone Tissue

4.2K
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...
4.2K
Essential Minerals for Bone Health01:31

Essential Minerals for Bone Health

7.0K
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...
7.0K

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Related Experiment Videos

[Osteoporosis: a clinical perspective].

Niina Matikainen

    Duodecim; Laaketieteellinen Aikakauskirja
    |July 13, 2016
    PubMed
    Summary

    Osteoporosis is a condition of reduced bone density leading to fractures. Early assessment and lifestyle changes, alongside specific therapies, are crucial for managing fracture risk and improving bone health.

    Area of Science:

    • Orthopedics
    • Endocrinology
    • Geriatrics

    Context:

    • Osteoporosis is characterized by decreased bone density and microarchitectural deterioration, increasing fragility fracture risk.
    • The World Health Organization (WHO) diagnostic criteria for osteoporosis rely on bone densitometry.
    • However, treatment can be initiated based on high clinical fracture risk, assessed using tools like the FRAX risk algorithm.

    Purpose:

    • To outline the diagnostic criteria and risk assessment for osteoporosis.
    • To detail essential lifestyle modifications and foundational treatments for individuals at risk of fracture.
    • To present specific pharmacological interventions and considerations for osteoporosis management.

    Summary:

    • Basic osteoporosis management includes lifestyle advice (exercise, fall prevention, smoking cessation, reduced alcohol intake) and ensuring adequate calcium and vitamin D. Underlying conditions should be investigated post-diagnosis.

    Related Experiment Videos

  • Specific osteoporosis therapies encompass bisphosphonates, denosumab, teriparatide, strontium ranelate, and selective estrogen receptor modulators (SERMs).
  • In cases of hypogonadism, gonadal steroids may be used as standalone or adjunctive treatment. Treatment efficacy and duration are evaluated 2-5 years post-initiation.

    • Impact:

    • Provides a comprehensive overview of osteoporosis diagnosis, risk assessment, and management strategies.
    • Emphasizes the importance of both lifestyle modifications and targeted pharmacological treatments for effective osteoporosis care.
    • Highlights the need for ongoing assessment of treatment effectiveness and patient adherence over time.