E2027 (irsenontrine) 是一种代酶9抑制剂,与多尼化结合时可增强胆功能
Mai Ando1, Kazuto Yamazaki1, Eri Takahashi1
1Tsukuba Research Laboratories, Eisai Co., Ltd., 5-1-3, Tokodai, Tsukuba, Ibaraki 300-2635, Japan.
European journal of pharmacology
|September 6, 2025
概括
结合PDE9抑制剂和乙胆酶抑制剂可以治疗认知功能障碍. 这项研究表明,E2027和多尼佩西尔能协同改善记忆,并提高乙胆水平,这表明一种新的痴呆症治疗方法.
科学领域:
- 神经科学
- 药理学
- 生物化学
背景情况:
- 通过循环单酸盐 (cGMP) 调节神经元的可塑性和记忆力.
- 在治疗认知功能障碍方面,PDE9抑制剂 (PDE9I) 是有前途的.
- 氧化 (NO) - cGMP信号影响乙胆 (ACh) 的释放,这表明组合疗法.
研究的目的:
- 调查PDE9I E2027 (伊森氨酸) 和多尼化的联合作用.
- 评估它们对认知障碍模型和胆神经元功能的影响.
- 探索增强大脑ACh水平的协同机制.
主要方法:
- 使用自然遗忘和斯科波胺诱导的记忆障碍的老鼠模型.
- 使用新型对象区分指数评估认知功能.
- 对人类诱导多能干细胞 (iPSC) 衍生的胆神经元进行了研究.
- 测量了细胞内cGMP和细胞外ACh水平.
主要成果:
- 与donepezil单独治疗相比,与donepezil同时使用的小鼠模型显著改善了记忆力.
- 结合疗法导致大鼠海马中ACH水平升高.
- 人类胆固醇神经元中的cGMP和ACH剂量依赖性增加.
- 在试验室中,E2027和多内素协同提高了细胞外的ACh.
结论:
- 结合E2027和多尼化,在增强认知功能和ACH水平方面表现出协同作用.
- 这种组合疗法为痴呆症提供了潜在的治疗策略.
- 对于神经退行性疾病,需要对PDE9抑制剂和乙胆酶抑制剂进行进一步研究.
相关概念视频
01:30Indirect-Acting Cholinergic Agonists: Pharmacological Actions
820
Indirect-acting cholinergic agonists, also known as anticholinesterases, exert their pharmacological effects by enhancing cholinergic transmission in various body parts, including the neuromuscular junction, autonomic cholinergic synapses, and the brain.
At the neuromuscular junction, these agents work by inhibiting the breakdown of acetylcholine, allowing it to remain bound to the receptor and bind to nearby receptors. This process leads to repetitive firing of the endplate, causing muscle...
At the neuromuscular junction, these agents work by inhibiting the breakdown of acetylcholine, allowing it to remain bound to the receptor and bind to nearby receptors. This process leads to repetitive firing of the endplate, causing muscle...
820
01:18Indirect-Acting Cholinergic Agonists: Mechanism of Action
2.0K
Indirect-acting cholinergic agonists work by interacting with an enzyme called acetylcholinesterase (AChE) in the synaptic cleft. They can be reversible or irreversible inhibitors and have different effects on the enzyme.
Reversible inhibitors like edrophonium bind to a specific part of the enzyme called the anionic catalytic site. They form noncovalent bonds, which means they are not strongly attached to the enzyme. This creates a temporary and less stable enzyme–inhibitor complex,...
Reversible inhibitors like edrophonium bind to a specific part of the enzyme called the anionic catalytic site. They form noncovalent bonds, which means they are not strongly attached to the enzyme. This creates a temporary and less stable enzyme–inhibitor complex,...
2.0K
01:26Anticholinesterase Agents: Poisoning and Treatment
1.0K
Anticholinesterases, also known as cholinesterase inhibitors, work by blocking the breakdown of acetylcholine, leading to its accumulation in the synaptic cleft. This accumulation indirectly enhances both muscarinic and nicotinic actions. These agents are classified as reversible or irreversible based on their mechanism of action.
Irreversible agents form a strong bond with the cholinesterase enzyme, making it inactive. The breakdown of the phosphorylated enzyme is...
Irreversible agents form a strong bond with the cholinesterase enzyme, making it inactive. The breakdown of the phosphorylated enzyme is...
1.0K
01:22Alzheimer's Disease: Treatment
260
Alzheimer's Disease (AD), a neurodegenerative disorder, is pathologically identified by amyloid plaques and neurofibrillary tangles composed of tau protein. AD pharmacotherapy aims to manage cognitive symptoms, delay disease progression, and treat behavioral symptoms. The treatment is primarily symptomatic and palliative, with no definitive disease-modifying therapy available. Cholinesterase inhibitors, including donepezil (Aricept), rivastigmine (Exelon), and galantamine (Razadyne), are...
260
01:29Indirect-Acting Cholinergic Agonists: Chemistry and Structure-Activity Relationship
645
Indirect-acting cholinergic agonists are agents that interact with the acetylcholinesterase enzyme in the synaptic cleft, preventing the breakdown of acetylcholine into choline and acetate. Consequently, the concentration of acetylcholine in the synaptic cleft increases. These agonists can be classified into reversible and irreversible inhibitors based on their duration of action.
Reversible inhibitors display short to medium durations of action. Short-acting agents include simple alcohols with...
Reversible inhibitors display short to medium durations of action. Short-acting agents include simple alcohols with...
645
01:22Indirect-Acting Cholinergic Agonists: Pharmacokinetics
1.1K
Indirect-acting cholinergic agonists, or anticholinesterases, enhance the body's cholinergic activity by inhibiting acetylcholine's breakdown. They are categorized as reversible or irreversible agents based on their mechanism of action. They are further classified into short-acting, intermediate-acting, and long-acting agents based on their duration of action.
Reversible agents containing quaternary amines, such as neostigmine and edrophonium, are not easily absorbed orally because they...
Reversible agents containing quaternary amines, such as neostigmine and edrophonium, are not easily absorbed orally because they...
1.1K