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相关概念视频

Bone Remodeling01:40

Bone Remodeling

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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.
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Osteoclasts in Bone Remodeling01:31

Osteoclasts in Bone Remodeling

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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...
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Bone Disorders01:29

Bone Disorders

3.4K
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...
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相关实验视频

Updated: Jun 3, 2025

Cantilever Bending of Murine Femoral Necks
06:44

Cantilever Bending of Murine Femoral Necks

Published on: January 5, 2022

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骨质疏松症和中风:一个双向的门德尔随机化研究.

Miao He1, Haochuan Yong1, Zhidong Cao1

  • 1Department of Orthopedic Surgery, Chongqing Emergency Medical Center (Chongqing University Central Hospital), Jiankang Road 1, Chongqing, 400010, China.

Journal of bone and mineral metabolism
|January 10, 2025
PubMed
概括

这项研究没有发现骨质疏松症和中风之间的直接因果关系,使用孟德尔随机化. 虽然没有直接的遗传因果关系,但二次效应仍然可能连接这些条件.

关键词:
全基因组关联研究研究.门德尔的随机化骨质疏松症是一种骨质疏松症.一次性中风,中风.

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Semiautomated Longitudinal Microcomputed Tomography-based Quantitative Structural Analysis of a Nude Rat Osteoporosis-related Vertebral Fracture Model
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Estrogen-Like Effect of Bazi Bushen Capsule in Ovariectomized Rats
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Estrogen-Like Effect of Bazi Bushen Capsule in Ovariectomized Rats

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相关实验视频

Last Updated: Jun 3, 2025

Cantilever Bending of Murine Femoral Necks
06:44

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Semiautomated Longitudinal Microcomputed Tomography-based Quantitative Structural Analysis of a Nude Rat Osteoporosis-related Vertebral Fracture Model
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Semiautomated Longitudinal Microcomputed Tomography-based Quantitative Structural Analysis of a Nude Rat Osteoporosis-related Vertebral Fracture Model

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Estrogen-Like Effect of Bazi Bushen Capsule in Ovariectomized Rats
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科学领域:

  • 遗传学 是一个遗传学.
  • 流行病学 流行病学
  • 公共卫生 公共卫生

背景情况:

  • 观察性研究表明,骨质疏松症和中风之间存在联系.
  • 骨质疏松症和中风之间的因果遗传关系尚不清楚.
  • 这项研究使用遗传数据调查了双向因果关系.

研究的目的:

  • 为了确定骨质疏松症是否因果关系影响中风风险.
  • 确定中风是否会对骨质疏松症风险产生因果影响.
  • 研究骨质疏松症与中风关系的遗传基础.

主要方法:

  • 两个样本的门德尔随机化 (MR) 方法.
  • 利用骨质疏松症和中风的全基因组关联研究 (GWAS) 数据.
  • 采用逆变量加权 (IVW),MR-Egger和中位数加权的方法进行因果推理.

主要成果:

  • 在骨质疏松症和中风或其亚型之间没有发现显著的双向因果关系.
  • 敏感性分析证实了研究结果的可靠性和稳定性.
  • 结果是一致的,不管是否包括类单核酸多态 (SNP).

结论:

  • 骨质疏松症和中风之间没有直接的因果遗传关系.
  • 虽然没有直接的因果关系,但二次效应可能会将这些情况联系在一起.
  • 这些发现有助于理解骨健康和脑血管疾病之间的复杂相互作用.