在非人类灵长类动物模型中,用定制3D打印的氧酸盐脚手架与rhBMP-2或二皮里达摩尔增强的头骨缺陷重建
Griffin P Bins1, Heather A Burkart2, William Molair3
1Division of Plastic and Reconstructive Surgery, Northwell Health, New York, New York, USA, northwell.edu.
Journal of tissue engineering and regenerative medicine
|February 2, 2026
概括
使用3D打印的氧酸支架进行骨组织工程,显示了对骨缺陷修复的前景. 与其他治疗方法相比,重组人骨形态基因蛋白-2 (rhBMP-2) 显著增强了骨再生和整合.
科学领域:
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
- 面外科手术 面外科手术
背景情况:
- 关键大小的骨缺陷,特别是在头骨面部区域,构成重大重建挑战.
- 骨组织工程 (BTE) 为再生骨和与宿主组织集成提供了一个潜在的解决方案.
研究的目的:
- 评估3D打印的加RhBMP-2或二氧化 (DIPY) 增强的酸支架在非人类灵长类模型中的缺陷重建的临床准备.
主要方法:
- 定制3D打印的氧酸支架被植入到的关键大小的头骨缺陷中.
- 组包括未涂层的脚手架,rhBMP-2增强脚手架和DIPY增强脚手架.
- 评估涉及连续CT扫描,微CT,组织学和12个月的纳米印记.
主要成果:
- 与DIPY (~9%) 和未涂层脚手架 (10%) 相比, rhBMP-2增强脚手架显示出明显更大的骨架桥梁 (~90%) 和骨体积.
- 组织学显示,与DIPY (~39%) 和未涂层支架 (~27%) 相比,rhBMP-2具有更高的骨内生长 (~64%) 和不涂层支架 (~27%).
- 在使用 rhBMP-2 脚手架再生的骨头中,纳米印显示出优越的机械性能 (Young 的模量,硬度).
结论:
- 用3D打印的酸基架对于重建临界大小的头骨缺陷是有效的.
- rhBMP-2增强显著改善了骨内生长,整合和机械特性,为骨整形提供了一个可行的替代方案.
相关概念视频
Lumber Defects
520
Lumber defects, which can affect both the appearance and structural integrity of wood, include a variety of growth and manufacturing flaws. Growth defects such as knots and knotholes occur where branches were once attached to the tree trunk, with knotholes forming when these knots fall out. Other natural defects include decay and insect damage, which compromise the wood's strength and durability.
Shakes are minor fractures that run along or across the wood's annual rings, while wane is...
Shakes are minor fractures that run along or across the wood's annual rings, while wane is...
520
Cranial and Spinal Meninges
4.0K
The cranial and spinal meninges are complex protective structures surrounding the central nervous system (CNS), consisting of the brain and spinal cord. These meninges consist of the dura mater, the arachnoid mater, and the pia mater. They protect the CNS, provide structural support, and aid in circulating cerebrospinal fluid (CSF).
Cranial Meninges
These meningeal layers cover the cranium. The dura mater is the outermost layer of cranial meninges. It is a thick and durable membrane of dense...
Cranial Meninges
These meningeal layers cover the cranium. The dura mater is the outermost layer of cranial meninges. It is a thick and durable membrane of dense...
4.0K
Cranial Nerves: Types Part I
5.2K
Cranial nerves are responsible for transmitting motor and sensory information between the brain and various parts of the body. There are twelve pairs of cranial nerves, with the first six being essential in sensory perception, motor control, and autonomic functions related to the head and neck.
Olfactory Nerve (Cranial Nerve I)
The olfactory nerve, or cranial nerve I, is unique as it is purely sensory and dedicated to the sense of smell. This nerve originates in the olfactory epithelium of the...
Olfactory Nerve (Cranial Nerve I)
The olfactory nerve, or cranial nerve I, is unique as it is purely sensory and dedicated to the sense of smell. This nerve originates in the olfactory epithelium of the...
5.2K
Cranial Nerves: Types Part II
4.9K
Cranial nerves are responsible for transmitting motor and sensory information between the brain and various parts of the body. There are twelve pairs of cranial nerves. While the first six innervate the head and neck, the latter six nerves innervate the head and neck, as well as organs and tissues in the thoracic and abdominal cavities. They facilitate communication, expression, and autonomic control within the human body.
Facial Nerve (Cranial Nerve VII)
Cranial nerve VII, or the facial nerve,...
Facial Nerve (Cranial Nerve VII)
Cranial nerve VII, or the facial nerve,...
4.9K
Cranial Part of Parasympathetic Division
2.3K
The cranial part of the parasympathetic division plays a crucial role in regulating the visceral functions of the head and specific structures in the neck, thoracic, and abdominopelvic cavities. Preganglionic fibers of the parasympathetic division exit the brain through cranial nerves III (oculomotor), VII (facial), IX (glossopharyngeal), and X (vagus), delivering parasympathetic output to the respective visceral structures.
The vagus nerve (cranial nerve X) alone accounts for approximately 75...
The vagus nerve (cranial nerve X) alone accounts for approximately 75...
2.3K
Reconstruction of Signal using Interpolation
729
Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next...
729


