哈尔西诺尼德激活剂被光滑化以改善缺血性中风损伤
Jingjing Liu1, Wenyang Zhao2, Jia Kang2
1School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China; School of Basic Medical Sciences, University of South China, Hengyang, Hunan 421001, PR China.
Life sciences
|December 22, 2024
概括
使用SMO或halcinonide的Shh通路抑制神经元细胞死亡,并减少中风损伤. 这项研究确定了一个新的治疗标和化学物质用于缺血性中风治疗.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 缺血性中风对健康造成重大负担,需要新的治疗策略.
- SHH (Sonic hedgehog) 信号通路与中风病理学相关的细胞过程有关.
研究的目的:
- 在缺血性中风模型中调查SMO (Shh联合记者) 和其激素激素halcinonide的神经保护作用.
- 为了确定SMO或哈尔诺尼德是否可以对Bcl-2进行上调,以抑制神经元细胞死亡并改善中风后的结果.
主要方法:
- 用halcinonide处理PC12细胞或对SMO表达进行基因操作,以评估对氧化或氧气-葡萄糖剥夺/再输应激 (OGD/R) 的反应.
- 腺相关病毒载体 (AAV-SMO或AAV-EGFP) 用于MCAO (中脑动脉封闭) 鼠标模型,以评估对脑缺血/反 (I/R) 损伤的保护作用.
- 生物化学分析测量了细胞损伤的标记物 (L-LA,LDH,ROS,MDA),氧化应激 (SOD,GSSG,GSH),炎症 (TNF-α,IL-6) 和细胞亡 (Bcl-2/Bax).
主要成果:
- 哈尔西诺尼德治疗显著缓解了MCAO大鼠的神经缺陷,并减少了脑梗塞.
- 通过SMO操纵 (表达或淘汰) 证明了对抗氧化和OGD/R压力的神经保护作用,反映了Halcinonide的作用.
- 在MCAO大鼠中,AAV-SMO的使用防止了大脑损伤,并且发现,halcinonide可以抑制Bcl-2/Bax介导的亡,部分是通过Shh通路激活和SMO增强.
结论:
- 通过SMO激活,Shh途径为缺血性中风提供了一个有希望的治疗途径.
- 哈尔西诺尼德成为治疗缺血性中风的潜在候选化学物质,旨在减少疾病严重程度和死亡率.
相关概念视频
01:26Heart Failure Drugs: Inotropic Agents
Positive inotropic agents are commonly used as the first line of treatment for heart failure. One such agent is digoxin, derived from the genus Digitalis, which has been known for centuries but effectively utilized since 1785. However, these cardiac glycosides can have potentially toxic effects due to their mechanism of action, which involves inhibiting Na+/K+-ATPase and increasing contractility. Digoxin is absorbed orally and distributed in various tissues, including the CNS. It has a long...
01:26Heart Failure Drugs: Inhibitors of Renin-Angiotensin System
The activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS) contributes to cardiac remodeling, and inhibiting the RAAS is a pharmacological target in heart failure management. As a result, neurohumoral modulation is a crucial treatment principle for managing heart failure. This approach involves using medications like ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), β-blockers, mineralocorticoid receptor antagonists (MRAs), and neutral...
01:30Anticoagulant Drugs: Low-Molecular-Weight Heparins
Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
01:16Vascular Spasm
The vascular phase, also known as vasospasm, is the initial stage of hemostasis, crucial for preventing excessive bleeding when a blood vessel is injured. After a vessel is cut, nerves in the damaged area trigger pain and other sensory impulses. Simultaneously, the smooth muscles in the vessel wall contract, resulting in a vascular spasm. This contraction reduces the vessel's diameter at the injury site, slowing or stopping blood loss through the vessel wall. Vascular spasms typically last for...
01:23Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists
Prostacyclin receptor agonists are a class of therapeutic agents integral to managing pulmonary arterial hypertension (PAH). These drugs operate by mimicking the action of prostaglandin I2, or PGI2, a naturally occurring compound in the body.
These agonists bind to the IPR receptor situated on the plasma membrane of the pulmonary artery smooth muscle cells. This binding triggers a cascade of reactions known as the GS-AC-cAMP-PKA pathway. This pathway results in the relaxation of smooth muscle...
These agonists bind to the IPR receptor situated on the plasma membrane of the pulmonary artery smooth muscle cells. This binding triggers a cascade of reactions known as the GS-AC-cAMP-PKA pathway. This pathway results in the relaxation of smooth muscle...