相关实验视频
Updated: Jun 17, 2025

12:17
Detection and Isolation of Apoptotic Bodies to High Purity
Published on: August 12, 2018
10.6K
双脚长头之间的相关性 微观退化和亡过程的程度
Łukasz Jaworski1, Jan Zabrzyński1, Peter J Millett2
1Department of Orthopaedics and Traumatology, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, 85-092 Bydgoszcz, Poland.
Journal of clinical medicine
|August 10, 2024
概括
亡与双肩肌长头 (LHBT) 退化并没有直接相关. 然而,年龄与肌病中的原体变化,退化和p53表达有关.
科学领域:
- 整形外科 整形外科 整形外科
- 病理学 病理学 病理学
- 细胞生物学 细胞生物学
背景情况:
- 双肩肌的长头 (LHBT) 容易发生退化和损伤.
- 了解涉及LHBT肌病的细胞机制,如细胞亡,对于有效治疗至关重要.
- 以前的研究还没有完全阐明LHBT中微观退化和亡之间的关系.
研究的目的:
- 调查LHBT的微观退化和亡过程之间的相关性.
- 评估与LHBT退行相关的亡标记物 (caspase-3,p53,BCL-2) 的表达.
- 为了确定患者年龄对肌病症和亡标志物的影响.
主要方法:
- 对26个LHBT样本的组织学检查,这些样本来自接受关节镜手术的患者.
- 用血素,素和Alcian蓝染色用于显微镜分析.
- 使用原始和修改的波纳得分来评估退化.
- 与亡标记物的相关性分析:激活的caspase-3 (casp3),p53和BCL-2.
主要成果:
- 修改后的波纳尔评分与患者年龄正相关 (p=0.0022).
- p53表达指数与患者衰老有正相关性 (p=0.0441).
- 没有发现apoptotic指数和博纳尔退化评分之间的显著相关性.
结论:
- 亡表达似乎与LHBT退化程度没有直接关联,特别是在后期阶段.
- 原和基质的变化,以及退化,与患者的年龄有显著的关联.
- 通过p53表达体现的亡增加与研究的肌病患者群体的衰老有关.
相关概念视频
The Intrinsic Apoptotic Pathway
6.4K
Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
6.4K
Phagocytosis of Apoptotic Cells
3.7K
Cells undergoing apoptosis form apoptotic bodies that must be removed immediately to prevent inflammation, autoimmune diseases, and necrosis. Phagocytosis is carried out by professional phagocytes such as macrophages or immature dendritic cells. Non-professional phagocytes such as epithelial cells and fibroblasts also take part in this process; however, they are not as effective as professional phagocytes.
Normal cells contain receptors that prevent them from being recognized...
Normal cells contain receptors that prevent them from being recognized...
3.7K
The Extrinsic Apoptotic Pathway
6.3K
The extrinsic apoptotic pathway is initiated when extracellular death-inducing signals, such as specific cytokines, activate the death receptors expressed on the cell surface. The immune cells involved in this pathway are natural killer cells (NK cells) and cytotoxic T-lymphocytes. NK cells are critical in innate immune response, while cytotoxic T-lymphocytes are associated with adaptive immune response. These cells recognize specific receptors expressed on the altered cells and activate...
6.3K
Cross-bridge Cycle
117.2K
As muscle contracts, the overlap between the thin and thick filaments increases, decreasing the length of the sarcomere—the contractile unit of the muscle—using energy in the form of ATP. At the molecular level, this is a cyclic, multistep process that involves binding and hydrolysis of ATP, and movement of actin by myosin.
117.2K

