可调节的鼻内聚合物纳米载体触发了olanzapine的大脑输送,并改善了活体抗精神病活性
Ahmed A Katamesh1, Hend Mohamed Abdel-Bar2, Rania Mahafdeh3
1Department of Pharmaceutics, College of Pharmacy, University of Ha'il, Ha'il 81442, Saudi Arabia.
Pharmaceutics
|July 30, 2025
概括
一种新的鼻内纳米载体,Poly(Olanzapine) 增强了用于治疗精神分裂症的 olanzapine (Ola) 的大脑输送. 与口服药物相比,这种配方提高了疗效,减少了副作用.
科学领域:
- 纳米技术纳米技术
- 神经科学是一个神经科学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 奥兰沙平 (Ola) 是一种抗精神病药物,由于血脑屏障和新陈代谢,其脑部生物可用性有限.
- 系统性副作用也限制了它的临床效用.
研究的目的:
- 开发和优化一种鼻内聚合体纳米载体 (PolyOla),以提高奥兰扎对大脑的向,疗效和安全性.
- 为了克服传统 olanzapine 输送的局限性.
主要方法:
- 聚合物纳米载体 (PolyOla) 采用poloxamer 401进行了配方,并通过Box-Behnken Design进行了优化.
- 特性包括颗粒大小,形态,药物释放和血清稳定性.
- 在老鼠体内研究评估了精神分裂症模型中的药理动力学,药理动力学和全身安全标记.
主要成果:
- 优化PolyOla显示了小颗粒大小 (78.3nm),高捕获效率 (91.36%),持续释放,在血清中保持稳定.
- 鼻内PolyOla显著增加了大脑输送 (2.7倍Cmax,5.7倍AUC) 与快速的大脑Tmax (15分钟) 和高DTE% (365.38%).
- 聚奥拉显示出优越的抗精神病疗效,减少了副作用,并改善了全身安全标志物.
结论:
- 鼻内注射PolyOla是一种有前途的平台,用于针对性地向大脑输送 olanzapine.
- 这种方法通过减少外围毒性来提高精神分裂症管理的治疗效果和安全性.
相关概念视频
01:21Antipsychotic Drugs: Typical and Atypical Agents
320
Antipsychotic drugs are classified into first-generation (typical) drugs including phenothiazines; and second-generation (atypical) drugs. Chlorpromazine hydrochloride (Thorazine), a phenothiazine derivative, broadly impacts the central, autonomic, and endocrine systems. This drug, along with typical agents like haloperidol (Haldol), primarily works by antagonizing D2 receptors, thus reducing dopaminergic neurotransmission. However, typical antipsychotics can cause side effects such as sedation...
320
01:26Psychosis: Goals of Pharmacotherapy
209
Antipsychotic drugs are a crucial treatment method for acute and chronic psychoses, bipolar illness, and behavioral disorders. The selection of these drugs depends on several factors, including the state of the disease, clinical judgment, possible drug interactions, and the patient's sensitivity to adverse effects. In immediate scenarios, such as delirium and dementia, short-term treatment with low doses of high-potency typical or atypical agents can effectively manage symptom exacerbation.
209
01:22Drug Delivery: Miscellaneous Routes
468
Drug delivery methods like oral inhalation, nasal sprays, transdermal patches, eye drops, intravitreal injection, and rectal administration provide localized effects with reduced toxicity.
Oral inhalation and nasal sprays swiftly transfer drugs across the respiratory epithelium's mucosal layer. Inhaled glucocorticoids and bronchodilators directly target lung conditions such as asthma, while fluticasone nasal spray mitigates allergic rhinitis.
Transdermal patches transport drugs...
Oral inhalation and nasal sprays swiftly transfer drugs across the respiratory epithelium's mucosal layer. Inhaled glucocorticoids and bronchodilators directly target lung conditions such as asthma, while fluticasone nasal spray mitigates allergic rhinitis.
Transdermal patches transport drugs...
468
01:20Antiepileptic Drugs: Modulators of Neurotransmitter Release Mediated by SV2A Protein
451
Antiepileptic drugs, such as levetiracetam (Keppra) and brivaracetam (Briviact), have emerged as crucial tools in managing epilepsy. These medications exert their therapeutic effects by targeting the synaptic vesicle protein SV2A, a transmembrane glycoprotein primarily found in the brain.
SV2A is a transmembrane glycoprotein located predominantly in the brain, modulating the release of neurotransmitters for neuronal communication. Both levetiracetam and brivaracetam exhibit a high affinity for...
SV2A is a transmembrane glycoprotein located predominantly in the brain, modulating the release of neurotransmitters for neuronal communication. Both levetiracetam and brivaracetam exhibit a high affinity for...
451