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Introduction to Fibroblasts01:09

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Rudolph Virchow discovered spindle-shaped cells called fibroblasts in 1858. Inactive fibroblasts, called fibrocytes, become activated by various stimuli, such as growth factors and inflammatory cytokines. Activated fibroblasts play a crucial role in wound healing, inflammation, formation of new blood vessels, and cancer progression. Uncontrolled activation of fibroblasts results in fibrosis, the excess deposition of fibrous tissue, which can lead to scarring and affect normal organs. This...
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The extracellular matrix or ECM holds cells together to form a tissue and allows the cells within the tissue to communicate. ECM comprises proteins such as fibronectin, collagen, laminin, etc. The most abundant protein in this space is collagen. Collagen fibers are interwoven with carbohydrate-containing protein molecules called proteoglycans. ECM allows cell migration and provides a structural scaffold at cell adhesion that anchors the cell when the extracellular matrix proteins interact with...
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In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue. 
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Fibronectin is an adhesive glycoprotein present in the extracellular matrix of embryogenic and adult tissue. These molecules primarily aid in regulating cell motility and attachment. A fibronectin molecule is composed of two identical polypeptide chains attached to each other by a pair of disulfide bonds at the C-terminal.
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纤维细胞形态,粘附和细胞外基质分泌在柱状微阵列中Hydroxyapatite

Takuma Watanabe1, Gerardo Martin Quindoza1, Yuta Aida1

  • 1Department of Materials Science and Engineering, School of Materials and Chemical Technology, Institute of Science Tokyo, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.

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概括

模仿天然质结构可以提高牙植入物的稳定性. 这项研究表明,类似质的酸柱增强纤维细胞粘附和细胞外矩阵集成,促进植入物更好的纤维集成.

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科学领域:

  • 生物材料科学 生物材料科学
  • 牙科植入物学 牙科植入物学
  • 组织工程是组织工程.

背景情况:

  • 仿生牙科植入物经常模仿牙质的结构和生物力学.
  • 纤维集成对于植入物稳定性至关重要,在仿生设计中未被充分探索.

研究的目的:

  • 为了研究纤维细胞粘附和细胞外基质 (ECM) 分泌在酸 (HAp) 陶上的纤维细胞粘附和细胞外基质 (ECM) 分泌,这种陶具有仿真质的柱状结构.
  • 评估该结构增强纤维整合的潜力.

主要方法:

  • 制造具有柱状微阵列架构的HAp陶体.
  • 在HAp结构上培养NIH3T3纤维细胞.
  • 使用扫描电子显微镜 (SEM) 和免疫光学进行分析.

主要成果:

  • 观察了状纤维细胞形态,突起在HAp支柱上.
  • 证据表明ECM透和纤维结构沿着柱子形成.
  • 纤维细胞与柱状HAp架构的成功集成.

结论:

  • 类似质的柱状结构显著增强纤维细胞粘附和ECM分泌.
  • 这种仿生架构促进了纤维融合的改善.
  • 这些发现表明,有潜在的策略可以降低牙植入物失败率.