缺氧调节了机械应激的内皮细胞的表型,这些细胞对 CoCr 丰富的介质做出反应
Mariana Issler Pinheiro Machado1, Anderson Moreira Gomes1, Willian Fernando Zambuzzi1
1Lab. of Bioassays and Cellular Dynamics, Department of Chemical and Biological Sciences, Institute of Biosciences, UNESP - São Paulo State University, 18618-970 Botucatu, São Paulo, Brazil.
概括
-材料,通过诱导的缺氧,显著影响内皮细胞基因 (VEGF, eNOS),对于牙植入物周围的组织再生和骨质整合至关重要.
科学领域:
- 生物材料科学 生物材料科学
- 细胞生物学 细胞生物学
- 再生医学是一种再生医学.
背景情况:
- 内皮细胞表型对于牙周植入物愈合至关重要.
- 被用于通过稳定缺氧诱导因素 (HIF1α) 来诱导实验性缺氧.
- 缺氧模型对于研究细胞代谢和分子反应至关重要.
研究的目的:
- 评估内皮细胞对- (CoCr) 丰富介质的反应.
- 了解CoCr材料是否通过诱导的缺氧来调节内皮细胞.
- 为了研究缺氧在周围植入物组织再生中的作用.
主要方法:
- 将内皮细胞暴露在 CoCr 丰富的介质中.
- 对VEGF,eNOS和蛋白质酶相关基因的基因表达的分析.
- 在功能性测试中使用化学低氧调节剂 (chrysin,DMOG) 的验证.
主要成果:
- CoCr介质显著调节的内皮细胞表型.
- 改变了VEGF和eNOS基因的表达.
- 观察到对蛋白质体相关基因的最低要求.
- 低氧在维持内皮细胞表型中的重要性得到了验证.
结论:
- 从CoCr设备中释放的可能会为骨质融合创造一个有利的微环境.
- 缺氧对于在周围植入物愈合期间维持内皮细胞表型至关重要.
- 研究结果表明,有可能开发出更多生物活性植入物表面.
相关概念视频
01:27Oxygen Transport in the Blood
2.7K
Hemoglobin (Hb) is a crucial molecule in the human body, consisting of four polypeptide chains, each bound to an iron-containing heme group. This unique structure enables hemoglobin to bind to oxygen, with each molecule capable of combining with four molecules of oxygen, leading to rapid and reversible oxygen loading. When fully loaded with oxygen, it is called oxyhemoglobin, while hemoglobin that has released oxygen is called reduced hemoglobin or deoxyhemoglobin. As hemoglobin binds oxygen,...
2.7K
01:23Hypoxia
1.1K
Hypoxia is a medical condition characterized by an inadequate oxygen supply to body tissues. It typically manifests as a bluish discoloration of the skin and mucosae, especially in fair-skinned individuals, when hemoglobin (Hb) saturation drops below 75%.
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
1.1K