結核の長期作用マイクロニードル療法のためのコクリステル形成によるイソニアジド溶解性の戦略的調節
Octavio E Fandiño1, Lucia K McPeake1, Huanhuan Li1
1School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, U.K.
ACS applied materials & interfaces
|September 4, 2025
まとめ
この研究は,結核治療のためのマイクロニードルパッチを溶かすための新しいイソニアジド-サリシル酸コクリステルを開発した. この薬剤は薬剤の蓄積と持続的な放出を促進し,治療結果を改善します.
科学分野:
- 医薬品科学
- 材料科学
- 薬物投与システム
背景:
- 結核は世界的な健康問題であり,薬剤耐性や長期の治療に耐える患者の不足が原因です.
- イソニアジド (ISZ) は,第一線の抗結核薬であり,溶解性が高く,半減期が短いため,頻繁に投与され,血濃度が変動する.
- ISZの溶解性を調節することは,治療効果と患者の服従を改善するための持続放出剤の開発に不可欠です.
研究 の 目的:
- イソニアジド-サリシル酸 (ISZ-SA) のコクリスタルを設計し,合成し,特徴づけ,ISZの溶解性を減らし,持続的な放出を可能にします.
- ISZ-SAコクリスタルを溶解可能なマイクロニードル配列パッチ (MAP) として,皮膚経由で投与する.
- 純粋なISZと比較して,MAPにおけるISZ-SAコクリスタルの in vitro放出とex vivo皮膚運動性能を評価する.
主な方法:
- イソニアジド (ISZ) をサリチル酸 (SA) で共結晶化し,FTIR,DSC,PXRDを用いた特徴化が行われる.
- 水性鋳造を用いてISZ-SAコクリスタルを組み込んだ溶解マイクロニードル配列パッチ (MAP) の製造.
- フランツ拡散細胞を用いたインビトロ薬剤放出試験とエクビボ皮膚浸透/沈殿試験.
主要な成果:
- ISZ-SA共結晶は合成され,明確な結晶相であると確認されました.
- FTIR分析は,MAPポリメリックマトリックス内のコクリスタルの構造的整合性を確認しました.
- 純粋なISZと比較して,コクリスタル製剤からISZの緩慢で持続的な放出が示されました.
- コクリスタルMAPを使用したex vivo皮膚運動試験では,純粋なISZ (36%の蓄積) と比較してISZの表皮および皮膚の蓄積が著しく増加しました.
結論:
- イソニアジドとサリチル酸のコクリスタリングは,薬剤の溶解性を効果的に低下させ,溶解するマイクロニードルパッチを通じて持続的な経皮投与を可能にしました.
- 開発されたISZ-SAコクリスタルMAPは優れた皮膚保持と持続的な放出を示し,デポ形成の可能性を示唆した.
- コクリステル技術と溶解マップを組み合わせたこの革新的なアプローチは,投与頻度を下げ,患者のアデバーンスを高め,他の水性薬にも適用できるという,結核治療を改善するための有望な戦略です.
関連する概念動画
Pulmonary Tuberculosis V
236
Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the...
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the...
236
Factors Affecting Dissolution: Particle Size and Effective Surface Area
1.0K
Dissolution kinetics, an essential aspect of oral drug delivery, is significantly influenced by the drug's particle size. According to the Noyes-Whitney dissolution model, the dissolution rate correlates directly with the drug's surface area. The larger the surface area, the higher the drug's solubility in water, leading to a faster drug dissolution rate. Reducing particle size increases the effective surface area, enhancing the dissolution process. Micronization and nanosizing are...
1.0K
Factors Influencing Drug Absorption: Drug Dissolution
690
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...
690
Pulmonary Tuberculosis IV
196
Tuberculosis, more commonly referred to as TB, is an infectious disease stemming from Mycobacterium tuberculosis. While it primarily impacts the lungs, TB can also affect other body areas. Given its severity and global impact, timely and accurate diagnosis is crucial for controlling its spread and improving patient outcomes.
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
196
Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry
258
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...
258
Factors Affecting Dissolution: Polymorphism, Amorphism and Pseudopolymorphism
390
Polymorphism refers to the existence of a drug substance in multiple crystalline forms, known as polymorphs. Recently, this term has been expanded to include solvates (forms containing a solvent), amorphous forms (non-crystalline forms), and desolvated solvates (forms from which the solvent has been removed).
Some polymorphic crystals possess lower aqueous solubility than their amorphous counterparts, leading to incomplete absorption. For instance, the oral suspension of Chloramphenicol, which...
Some polymorphic crystals possess lower aqueous solubility than their amorphous counterparts, leading to incomplete absorption. For instance, the oral suspension of Chloramphenicol, which...
390


