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相关概念视频

Bone Disorders01:29

Bone Disorders

4.0K
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...
4.0K
Osteoclasts in Bone Remodeling01:31

Osteoclasts in Bone Remodeling

3.2K
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...
3.2K
Bone Remodeling01:40

Bone Remodeling

38.5K
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.
38.5K
Hormones and Bone Tissue01:17

Hormones and Bone Tissue

3.0K
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...
3.0K
Role of Vitamins in Maintaining Bone Health01:25

Role of Vitamins in Maintaining Bone Health

3.7K
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...
3.7K
What is the Skeletal System?01:02

What is the Skeletal System?

53.7K
Overview
53.7K

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相关实验视频

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

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骨质疏松症:一个回顾

Suzanne N Morin1, William D Leslie2, John T Schousboe3

  • 1Department of Medicine, McGill University, Montreal, Quebec, Canada.

JAMA
|June 30, 2025
PubMed
概括

骨质疏松症影响数以百万计的老年人, 有效的治疗方法包括抗吸收和合成药物,以及改变生活方式和骨折联络服务,以减少骨折和改善结果.

科学领域:

  • 老年学
  • 整形医学
  • 药理学

背景情况:

  • 骨质疏松症是一种普遍的疾病,其特点是骨质量低和骨质脆弱,导致严重的发病率,死亡率和经济负担.
  • 在全球范围内,骨质疏松性骨折影响了50岁以上人口的很大一部分,有三分之一的女性和五分之一的男性受到影响.

研究的目的:

  • 概述骨质疏松症的当前管理策略,重点关注药物干预和支持性护理.
  • 强调风险评估和个性化治疗方法对骨折预防的重要性.

主要方法:

  • 对骨质疏松症的风险因素的审查,包括人口统计,病史和骨矿物质密度 (BMD) 测量.
  • 治疗选择的评估:抗吸收药物 (双酸盐,代诺苏马布) 和合成药物 (特里帕拉提德,阿巴洛帕拉提德,罗莫苏马布).
  • 骨折联络服务和生活方式 (,维生素D,运动) 在骨质疏松症管理中的作用的评估.

主要成果:

  • 建议高危患者使用抗吸收药物,以减少脊椎和骨骨折.
  • 具有非常高风险的个体可以服用类固醇药物,然后经常进行抗吸收疗法.
  • 骨折联络服务显著改善药物开始和坚持,减少随后的骨折.

结论:

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  • 骨质疏松症需要多方面的治疗方法,包括药物治疗,生活方式调整和协调治疗.
  • 早期识别高风险个体和及时介入适当治疗对于减轻骨折风险和改善患者的结果至关重要.