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Membrane lipids such as phosphatidylinositol (PI) are precursors for several membrane-bound and soluble second messengers. Specific kinases phosphorylate PI and produce phosphorylated inositol phospholipids. One such inositol phospholipids are the  phosphatidylinositol-4,5 bisphosphate [PI(4,5)P2], present in the inner half of the lipid bilayer. Upon ligand binding, GPCR stimulates Gq proteins to turn on phospholipase Cꞵ. Activated phospholipase Cꞵ cleaves PI(4,5)P2 and...
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Digital Home-Monitoring of Patients after Kidney Transplantation: The MACCS Platform
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MedAccessX:用于IoMT网络的区块链启用动态访问控制框架.

Guoyi Shi1, Minfeng Qi1, Qi Zhong1

  • 1Faculty of Data Science, City University of Macau, Macau 999078, China.

Sensors (Basel, Switzerland)
|April 28, 2025
PubMed
概括

本研究介绍了MedAccessX,这是一个基于区块链的框架,用于安全的物联网 (IoT) 医疗数据访问. MedAccessX增强了数据隐私,克服了传统系统的局限性,提高了效率和安全性.

关键词:
一个ABAC一个ABACRBAC RBAC RBAC RBAC RBAC RBAC RBAC RBAC RBAC RBAC RBAC RBAC RBAC RBAC RBAC RBAC RBAC RBAC访问控制 访问控制 访问控制区块链区块链区块链区块链区块链

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科学领域:

  • 计算机科学 计算机科学
  • 医疗保健技术 技术 医疗保健 技术
  • 网络安全 网络安全

背景情况:

  • 物联网 (IoT) 在医疗保健中的整合提高了效率,但引入了数据隐私风险和滥用.
  • 现有的物联网数据访问框架面临着集中化,可扩展性问题和静态权限等挑战.

研究的目的:

  • 提出MedAccessX,一个基于区块链的,用于医疗保健物联网数据的新型访问控制框架.
  • 加强数据隐私,安全,并克服传统访问控制模型的局限性.

主要方法:

  • 开发了MedAccessX,该框架结合了基于属性的访问控制 (ABAC) 和基于角色的访问控制 (RBAC).
  • 使用了四个智能合约:用户管理合约 (UMC),医疗数据管理合约 (MDMC),政策合约 (PC) 和访问控制合约 (ACC).
  • 评估了私有以太坊区块链网络上的框架,评估了安全性,成本,燃气消耗,吞吐量和响应时间.

主要成果:

  • 与现有解决方案相比,MedAccessX的部署成本较低.
  • 该框架实现了更高的吞吐量,表明性能有所改善.
  • 评估了安全性,燃气消耗和响应时间,显示出具有竞争力的结果.

结论:

  • MedAccessX为医疗保健物联网环境中的安全访问控制提供了强大而高效的解决方案.
  • 基于区块链的方法有效地解决了隐私风险和传统框架的局限性.
  • MedAccessX为管理敏感医疗数据访问提供了一个可扩展和安全的替代方案.