相关实验视频
Updated: Jan 14, 2026

03:52
The Creation of a Rat Model for Osteosarcopenia via Ovariectomy
Published on: February 21, 2025
1.1K
老年人肉症和骨质疏松症之间的相关性:系统性审查和元分析
Sha Jin1, Fengming Zheng1, Huaili Liu1
1Department of Geriatrics, Hangzhou Third People's Hospital, Hangzhou, China.
Frontiers in medicine
|October 17, 2025
概括
皮症显著增加了老年人骨质疏松症的风险. 这种关联因性别而异,男性的风险较高,在欧洲人群中最为强烈.
科学领域:
- 老年学是一门学科.
- 肌肉骨健康 肌肉骨健康
- 流行病学 流行病学
背景情况:
- 肉症和骨质疏松症是常见的老年综合征,增加了跌倒,骨折和残疾的风险.
- 共同的机制包括荷尔蒙变化,炎症和减少机械负荷.
- 缺乏关于沙尔科佩尼亚和骨质疏松症之间的流行病学联系和相互作用的共识,特别是在不同的人群中.
研究的目的:
- 量化评估全球老年人肉类和骨质疏松症之间的关联.
- 分析地理位置,性别,人口特征和诊断标准如何调节这种关联.
主要方法:
- 14项观察性研究的系统综述和元分析 (n=182,307).
- 在PubMed,Embase,Cochrane图书馆和CNKI数据库中进行了搜索.
- 使用纽卡斯尔-太华尺度评估研究质量;使用Review Manager 5.4和Stata 17.0.0进行的元分析.
主要成果:
- 皮症显著增加骨质疏松症的风险 (OR=3.16).
- 与女性 (OR=3.46) 相比,患有肉症的男性患骨质疏松症的风险更高 (OR=4.74).
- 欧洲人群的风险最高 (OR=4.37),其次是亚洲人群 (OR=2.66) 和美国人群 (OR=2.32). 居住在社区的人更容易受到感染 (OR=3.70).
结论:
- 肉类是骨质疏松症的重要风险因素,全球风险概况各不相同.
- 这种关联在男性和欧洲人群中更为强烈.
- 由于方法上的局限性,需要进行进一步的大规模前性研究来验证这些发现.
相关概念视频
Bone Disorders
5.0K
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...
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...
5.0K
Pharmacodynamics in Geriatric Patients: Effects of Age
185
Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
185
Osteoclasts in Bone Remodeling
3.9K
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...
3.9K
Changes in the Appendicular Skeleton with Age
3.4K
The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
3.4K
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism
195
Geriatric patients show significant variation in how their bodies process medications, which can change how effective and safe treatments are. The liver is the primary organ where drug metabolism occurs, involving two main types of chemical reactions: phase I and II. Phase I metabolism is driven by the cytochrome P450 enzyme system, which includes key types such as CYP3A, CYP2D6, and CYP2C9. Research indicates that while aging doesn't notably alter the levels or activity of these enzymes, it...
195
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution
228
Drug distribution in the human body is influenced by several factors, including plasma protein concentration, body composition, blood flow, tissue-protein concentration, and tissue fluid pH. Among these, changes in plasma protein concentration and body composition due to aging significantly affect how drugs are distributed within the body. Specifically, aging is associated with a decrease in albumin levels by about 10% and an increase in α1-acid glycoprotein levels. These alterations are...
228

