骨参与瘤诱导的骨病†
Salvatore Minisola1, Luciano Colangelo1, Jessica Pepe1
1Department of Clinical, Internal, Anaesthesiologic and Cardiovascular Sciences, "Sapienza" University of Rome, Viale del Policlinico 155, 00161 Rome, Italy.
概括
瘤诱导性骨质疏松症 (TIO) 是一种罕见的疾病,由于过多的纤维细胞生长因子23,导致骨问题. 手术切除瘤有效地扭转了代谢问题,并改善了骨密度.
科学领域:
- 内分泌学 在内分泌学.
- 在瘤学瘤学.
- 骨的新陈代谢 骨的新陈代谢
背景情况:
- 瘤诱导的骨质疏松症 (TIO) 是一种极为罕见的副瘤综合征.
- 它涉及异常的酸盐和维生素D代谢,由于纤维细胞生长因子23 (FGF23) 过度产生的介质瘤.
- 由于对骨的不良影响,TIO导致骨症状和骨折.
研究的目的:
- 描述TIO的特征,包括瘤组织学,骨密度和骨质量.
- 评估瘤切除对生化和骨参数的影响.
- 突出对TIO患者的长期影响.
主要方法:
- 骨活检样本的组织学检查.
- 评估面积骨矿物质密度 (DXA) 和椎骨分数.
- 使用高分辨率外围定量计算断层扫描 (HR-pQCT) 评估骨微架构.
主要成果:
- 瘤组织学显示了特定的特征,骨质积累和骨活检中的长期矿化滞后时间.
- 患有TIO的患者表现出明显减少的骨矿物质密度和损坏的骨质量 (脊椎和皮质).
- 手术切除瘤导致生物化学异常的完全逆转,骨矿物质密度的短期显著改善.
结论:
- 手术切除是TIO的最终治疗方法,可以解决代谢异常.
- 骨矿物质密度在手术后得到改善,尽管外围的微观结构参数可能需要更长的时间才能恢复.
- 长期生活质量结果,特别是关于骨折的结果,需要在TIO患者中进行进一步的研究.
相关概念视频
01:29Bone Disorders
5.1K
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...
5.1K
01:02What is the Skeletal System?
56.8K
Overview
56.8K
01:31Osteoclasts 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
01:21Skeleton and Calcium Homeostasis
5.8K
Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.
5.8K
01:22The Functions of the Skeletal System
5.7K
The most apparent functions of the skeletal system are support, protection, and movement. However, bone tissue also performs several other critical metabolic functions. For one, the bone matrix acts as a reservoir for a number of minerals important to the functioning of the body, especially calcium and phosphorus. These minerals, present in the bone tissue, can be released back into the bloodstream when required. Calcium ions, for example, are essential for muscle contractions and controlling...
5.7K
01:40Bone Remodeling
40.2K
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.
40.2K