相关实验视频
Updated: Jul 2, 2025

08:49
Models of Bone Metastasis
Published on: September 4, 2012
42.1K
在东南地区的退伍军人人口中发现帕杰特骨疾病
Mariana Urquiaga1, Angelo Gaffo1
1Birmingham VA Medical Center, Birmingham, Alabama, USA; Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, Alabama, USA.
The American journal of the medical sciences
|February 16, 2024
概括
页面页面是一个页面.
科学领域:
- 骨生物学 骨生物学 骨生物学
- 流行病学 流行病学
- 遗传学 是一个遗传学.
背景情况:
- 帕杰特骨疾病 (PDB) 的特点是骨重塑的加速.
- 传统上,PDB被认为在欧洲血统的人群中更为普遍.
- 临床观察表明,美国东南部退伍军人人口中,非洲裔美国人的患病率更高.
研究的目的:
- 调查美国东南部退伍军人人口中非洲裔美国人和白人患者中帕杰特骨病 (PDB) 的流行情况.
- 根据种族,比较PDB患者的人口和临床特征.
主要方法:
- 使用退伍军人事务的临床数据仓库 (CDW) 和电子医疗记录 (EMR) 的横截面研究.
- 从2000年到2020年,在伯明翰VA医疗中心 (BVAMC) 发现了患有帕杰特骨病 (PDB) 的患者.
- 对比了被诊断患有PDB的非洲裔美国人和白人患者的比例,并分析了诊断时的年龄和疾病特征.
主要成果:
- 在BVAMC (p = 0.0036) 中,非洲裔美国患者 (51%) 比白人患者 (40%) 更常见的帕杰特骨病 (PDB).
- 与白人患者 (平均70.1岁) 相比,非洲裔美国患者的诊断年龄明显较小 (平均为64.6岁) (p = 0.0009).
- 种族群体之间没有观察到性酸盐酸酶水平,多性病或症状并发症的显著差异.
结论:
- 在研究的美国东南地区退伍军人群中,帕杰特骨病 (PDB) 在非裔美国患者中比白人患者更为普遍.
- 研究结果表明,美国东南部的非洲裔美国人可能患有帕杰特骨病 (PDB).
- 进一步的研究是有必要的,以探索流行病学和潜在的遗传因素,导致PDB在这个人口.
相关概念视频
Bone Disorders
3.5K
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...
3.5K
Changes in the Appendicular Skeleton with Age
2.0K
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...
2.0K
Osteoclasts in Bone Remodeling
2.9K
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...
2.9K
Spongy Bone
4.4K
All bones comprise an outer layer of compact bone, and an interior made up of spongy bone tissue, also called cancellous or trabecular bone. In long bones, spongy bone tissue is mainly found in the interior of the epiphyses (broad ends of the bone).
Spongy bone is more porous, and less dense compared to compact bone. It is composed of concentric lamellae that are arranged irregularly to form the trabecular network. In some bones, the spaces between trabeculae contain red marrow, where...
Spongy bone is more porous, and less dense compared to compact bone. It is composed of concentric lamellae that are arranged irregularly to form the trabecular network. In some bones, the spaces between trabeculae contain red marrow, where...
4.4K
Gross Anatomy of Bone
5.2K
The two main features of a long bone are the diaphysis and the epiphysis.
The diaphysis is the tubular shaft that runs between the proximal and distal ends of the bone. The walls of the diaphysis are composed of dense and hard compact bone made of numerous osteons — the functional unit of the compact bone. The hollow region in the diaphysis is called the medullary cavity, which harbors the bone marrow. In infants and children, this marrow cavity is filled with red marrow, whereas in...
The diaphysis is the tubular shaft that runs between the proximal and distal ends of the bone. The walls of the diaphysis are composed of dense and hard compact bone made of numerous osteons — the functional unit of the compact bone. The hollow region in the diaphysis is called the medullary cavity, which harbors the bone marrow. In infants and children, this marrow cavity is filled with red marrow, whereas in...
5.2K
Bone Remodeling
38.3K
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.
38.3K

