相关实验视频

Updated: Jun 29, 2025

Delivery of Antibodies into the Murine Brain via Convection-enhanced Delivery
08:22

Delivery of Antibodies into the Murine Brain via Convection-enhanced Delivery

Published on: July 18, 2019

8.4K

使用热可逆立方体配方增强大脑生物可用性

Harshvardhan Jain1, Bala Prabhakar1, Pravin K Shende1

  • 1Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM'S NMIMS, V. L. Mehta Road, Vile Parle (W), Mumbai 400056, India.

Molecular pharmaceutics
|March 28, 2024
PubMed
概括

这项研究开发了一种含有fluoxetine的cubosomal in situ凝,用于鼻内输送,通过绕过血脑屏障 (BBB) 增强大脑的生物可用性. 这种新型配方在体内表现出改善了药物释放和药物动力学特征.

关键词:
大脑的生物可用性大脑的准目标立方体体的部分克塞提因 (fluoxetine) 是一种含有素的药物.在位凝在位凝大型抑郁症是主要的抑郁症.

更多相关视频

A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles09:57

A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles

Published on: December 23, 2016

8.9K
Heterotopic Mucosal Engrafting Procedure for Direct Drug Delivery to the Brain in Mice08:25

Heterotopic Mucosal Engrafting Procedure for Direct Drug Delivery to the Brain in Mice

Published on: July 16, 2014

10.8K

相关概念视频

Factors Influencing Drug Absorption: Physicochemical Parameters01:22

Factors Influencing Drug Absorption: Physicochemical Parameters

The physicochemical characteristics of drugs play a crucial role in formulating stable and bioavailable drug products. The solubility of a drug, governed by the varying pH along the GI tract and its dissociation constant (pKa), is pivotal in determining its ionization state and absorption rate. Notably, weak acids and bases remain unionized and are absorbed more rapidly.
Enhanced drug absorption can be achieved by reducing particle sizes and increasing surface areas, thereby facilitating...
274
Factors Influencing Drug Absorption: Drug Dissolution01:27

Factors Influencing Drug Absorption: Drug Dissolution

The pharmacokinetic journey of drugs from solid oral dosage forms into systemic circulation is multifaceted. It begins with disintegration, a prerequisite ensuring a solid dosage form's subdivision into minute particles. Dissolution occurs next as these granulated entities solubilize in gastrointestinal fluids. This solubilization is crucial for the succeeding stage, permeation, which describes the traversal of the drug across the intestinal membrane and its subsequent entry into the blood...
483
Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry01:20

Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry

Orally administered drugs primarily enter the systemic circulation via passive diffusion through the intestinal membranes. The drug's absorption is influenced by drug stability in the gastrointestinal GI tract, membrane permeability, the surface area available for absorption, luminal drug concentration, and residence time in the lumen. Drug permeability can be enhanced by adjusting the lipophilicity, polarity, or molecular size of the drug, promoting its passive transport across intestinal...
206
Factors Influencing Drug Absorption: Pharmaceutical Parameters01:28

Factors Influencing Drug Absorption: Pharmaceutical Parameters

Solid dosage forms such as tablets and capsules undergo rigorous manufacturing processes to ensure stability and effectiveness. Their dissolution and absorption properties are influenced significantly by the choice of excipients (inactive ingredients that serve various roles in the formulation), and the methodology applied during production. The manufacturing parameters, such as compression force and granulation techniques, significantly affect dissolution rates. Elevated compression forces...
133
Factors Affecting Dissolution: Drug pKa, Lipophilicity and GI pH01:21

Factors Affecting Dissolution: Drug pKa, Lipophilicity and GI pH

Drug absorption within the gastrointestinal (GI) tract is a complex process influenced by several critical factors, including the site pH, the drug's dissociation constant (pKa), and the drug's lipophilicity. The GI tract exhibits a pH gradient, with an acidic environment in the stomach and a more alkaline environment in the small intestine. This pH variation directly affects the ionization state of drugs.
A drug's pKa and the pH of the gastrointestinal (GI) tract play crucial roles...
1.3K
Factors Influencing Bioavailability: First-Pass Elimination01:23

Factors Influencing Bioavailability: First-Pass Elimination

When a drug is taken orally, it undergoes a journey starting from the gastrointestinal (GI) tract, passing through the portal vein, reaching the liver, and finally entering the systemic circulation. This process involves the absorption of the drug across the GI tract. The liver is the primary site for metabolizing the drug, with some metabolism also occurring in the gut wall. This journey significantly reduces the quantity of the drug that reaches the systemic circulation, a phenomenon known as...
6.3K