在他莫西芬存在时骨质细胞的行为:体外和体外骨质整合研究
Luiz Guilherme Fiorin1,2, Emanuela Galliera3,4, Henrique R Matheus1,5
1Department of Diagnosis and Surgery, Division of Periodontics, São Paulo State University "Júlio de Mesquita Filho"-UNESP, Araçatuba 16015-050, Brazil.
Dentistry journal
|August 27, 2025
概括
泰莫西芬治疗对大鼠的骨愈合和植入物整合产生了积极影响,增强了骨与植入物之间的接触和骨内生长. 在体外研究显示,他莫西芬在骨髓瘤细胞中增加了矿化率.
科学领域:
- 生物材料科学
- 细胞生物学
- 骨科研究
背景情况:
- 乳腺癌药物塔莫西芬已知对骨代谢有影响,但其对骨质整合和早期骨愈合的影响尚不清楚.
- 由于癌症幸存者的牙科植入物使用量不断增加, 了解他莫西芬的作用至关重要.
研究的目的:
- 在体外研究他莫西芬对人类骨髓瘤 (SAOS-2) 细胞的影响.
- 在卵巢切除的老鼠体内评估他莫西芬对植入物骨整合的影响.
主要方法:
- 治疗SAOS-2细胞时使用2μM的塔莫西芬 (TAM) 或对照细胞 (CTR).
- 在接受他莫西芬 (15 mg/ kg) 或安慰剂的卵巢切除或SHAM小鼠中植入盘.
- 评估细胞活力,矿物化,原合成,骨/植入物接触 (BIC) 和骨内生长 (BIN).
主要成果:
- 在体外: 塔莫西芬降低了SAOS-2细胞活力,但增加了矿化率.
- 在体内:与对照组相比,TAM组的BIC和BIN显著增加.
- 在体内:在TAM组中观察到较低的成熟原细胞百分比.
结论:
- 在实验室中,他莫西芬治疗降低了SAOS-2细胞的活力,同时增强了矿物化.
- 在体内,他莫西芬治疗对骨质整合产生了积极影响,增加了BIC和骨生长.
相关概念视频
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 Cells and Tissue
5.5K
Bones contain a relatively small number of cells entrenched in a matrix of organic and inorganic components. Although bone cells compose only a small amount of the bone volume, they are crucial to its function. Four types of cells are found within the bone tissue— osteoblasts, osteocytes, osteogenic cells, and osteoclasts.
Osteoblasts and Osteocytes
The osteoblast is the bone cell responsible for forming new bone tissue. It is found in the growing portions of bone, including the...
Osteoblasts and Osteocytes
The osteoblast is the bone cell responsible for forming new bone tissue. It is found in the growing portions of bone, including the...
5.5K


