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In vitro fertilization (IVF) is a form of assisted reproductive technology where an egg is fertilized with sperm in a controlled laboratory environment before transferring the resulting embryo into the uterus. This process is designed to help individuals and couples experiencing difficulties conceiving.
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Reproductive cloning is the process of producing a genetically identical copy—a clone—of an entire organism. While clones can be produced by splitting an early embryo—similar to what happens naturally with identical twins—cloning of adult animals is usually done by a process called somatic cell nuclear transfer (SCNT).
Somatic Cell Nuclear Transfer
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Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for...
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Bone marrow transplant is a potential cure for several diseases, including cancer and specific genetic disorders. Notably, this procedure is applicable for patients suffering from aplastic anemia, certain types of leukemia, severe combined immunodeficiency disease (SCID), Hodgkin's disease, non-Hodgkin's lymphoma, multiple myeloma, thalassemia, sickle-cell disease, and certain cancers.
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Male infertility affects millions of couples worldwide, arising from various factors that impact different stages of the reproductive process. An endocrine imbalance resulting from conditions like hypogonadism, Klinefelter syndrome, or pituitary disorders can disrupt hormone levels and reduce sperm production. Testicular defects, such as tumors, cryptorchidism, atrophic testes, abnormal sperm morphology, and low sperm count or motility, may arise due to genetic factors, structural...
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Tissue transplantation is a significant medical procedure involving the transfer of cells, tissues, or organs from a donor to a recipient, with the primary aim of restoring lost functions. This procedure is crucial in treating a broad spectrum of diseases, including kidney diseases, liver failure, heart disease, and certain types of cancers.
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[的治疗代孕产妇]

Su Bin Kim1,2, Min Seob Lee2, In Ho Song2

  • 1Department of Applied Bioengineering, Graduate School of Convergence Science and Technology, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea.

Molecular pharmaceutics
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概括

这项研究开发了一种使用同位素的新方法,用于差异化甲状腺癌 (DTC) 的精确剂量测量. 该方法通过准确估计针对性放射性药物治疗的辐射剂量来改善个性化医疗.

关键词:
生物分销生物分销有差异化的甲状腺癌.内部辐射剂量计是指内部辐射剂量计.简化的剂量计.代孕母亲是什么意思他们是天文学家.

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科学领域:

  • 核医学是一种核医学.
  • 放射性药物疗法是一种放射性药物疗法.
  • 医学物理 医学物理

背景情况:

  • 精确的剂量测量对于新型放射性药物和改进传统疗法至关重要.
  • 对于差异化甲状腺癌 (DTC) 现有的放射性治疗应用缺乏个性化剂量策略.
  • 对伴随性诊断放射性药物进行改进的剂量计外推是必要的.

研究的目的:

  • 在DTC异种移植小鼠模型中研究伴侣放射性药物的异位代孕.
  • 开发和验证一种新的,简化的方法,用于voxel级剂量测量.
  • 为了确定使用替代射线追踪器进行治疗前剂量测量的最佳扫描时间点.

主要方法:

  • 产生DTC异种移植小鼠模型与验证的同载体 (NIS) 蛋白质吸收.
  • 利用单光子发射计算机断层扫描 (SPECT) 成像和蒙特卡洛模拟进行剂量分布分析.
  • 采用[123I]NaI SPECT扫描和131I离子源模拟来估计吸收剂量,并纳入对象特定的组织数据.

主要成果:

  • [123I]NaI的瘤度峰值在注射后2.91±0.42小时时为96.49±11.66%的ID/g.
  • 在131I治疗中,估计的吸收剂量为0.0344±0.0088 Gy/MBq.
  • 建议使用Tmax和26h扫描点的简化剂量测量方法实现了在[-22.96,2.21%]范围内准确的吸收剂量估计.

结论:

  • 这项研究为评估DTC中的辐射剂量分布提供了实验基础.
  • 新的剂量测量方法简化了voxel级计算,并确定了治疗前评估的最佳扫描时间.
  • 预计这项工作将加强放射性药物治疗的临床剂量测量过程.