提格环素的吸收通过精选的辅助剂得到改善.
Hubert Ziółkowski1, Kalina Szteyn1, Dawid Jędrzkiewicz2
1Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-718 Olsztyn, Poland.
Pharmaceuticals (Basel, Switzerland)
|August 26, 2023
概括
诸如HP-β-CD,TPGS和SDOCH之类的辅助剂显著提高了tigecycline在中的口服生物可用性. 其他测试的化合物显示了不同程度的改善,表明可能有更好的tigecycline吸收.
科学领域:
- 药理学 药理学是指药理学的学科.
- 药物运输 药物运输 药物运输
- 兽医医学 兽医医学 兽医医学
背景情况:
- 蒂格环素是一种四环环素抗生素,口服吸收不良.
- 提高tigecycline的口服生物可用性对于有效的治疗应用至关重要.
- 肉作为胃肠道吸收研究的相关动物模型.
研究的目的:
- 评估各种辅助剂对tigecycline的血度和口服生物可用性的影响.
- 确定可以显著改善肉tigecycline吸收的特定辅助剂.
主要方法:
- 提格环素被静脉和口服给肉,有或没有辅助剂.
- 使用高性能液体染色学与合质谱法测量了tigecycline的血度.
- 对血度-时间数据进行了药理动力学分析 (分区和非分区).
主要成果:
- 惠普-β-CD,TPGS和SDOCH大约增加了tigecycline在曲线下的面积和口服生物利用率的两倍.
- 在DM-β-CD和TMC中,这些药理动力学参数的增加较小,但显著.
- 甲酸盐没有显著影响tigecycline的生物可用性.
结论:
- 惠普-β-CD,TPGS和SDOCH有效地提高了tigecycline的口服生物可用性.
- DM-β-CD和TMC也可能提供显著的生物利用性改善,这需要进一步的研究.
- 这些发现表明了改善兽医中口服tigecycline输送的潜在策略.
相关概念视频
Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry
229
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...
229
Factors Influencing Drug Absorption: Pharmaceutical Parameters
154
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...
154
Factors Influencing Drug Absorption: Physicochemical Parameters
323
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...
Enhanced drug absorption can be achieved by reducing particle sizes and increasing surface areas, thereby facilitating...
323
Factors Influencing Drug Absorption: Drug Dissolution
568
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...
568
Drug Absorption: Factors Affecting GI Absorption
4.1K
The process of oral drug absorption can be influenced by several factors. Weakly acidic drugs tend to be absorbed more readily from the stomach due to their nonionized state. However, absorption may be less efficient in the upper intestine, where drugs are often ionized. Interestingly, despite the stomach's apparent advantage for drug absorption, its mucous layer can hinder diffusion. Its surface area is also smaller than the intestine's, which can further slow down the absorption rate.
4.1K
Drug Delivery: Enteral Route
503
The enteral drug administration involves three primary routes: oral, sublingual, and buccal. Oral ingestion is the most prevalent, safe, economical, and convenient method for drug administration. However, it has certain drawbacks, including limited absorption due to the drug's low water solubility or poor membrane permeability, possible emesis from GI mucosa irritation, destruction of drugs by digestive enzymes or low gastric pH, and irregular absorption along with food or other drugs.
503


