层次化酸盐 - 基纤维素双重系统:对受控释放,抗病原和静血效应的体外评估
Mariam Mir1, Ildiko Badea2, Lee D Wilson1
1Department of Chemistry, University of Saskatchewan, 110 Science Place, Thorvaldson Building, Saskatoon, SK, S7N 5C9, Canada.
International journal of biological macromolecules
|November 16, 2025
概括
这项研究开发了用于药物输送的可持续性林氏纤维纤维-奇托桑生物复合材料. 这些材料在生物医学应用中显示出有希望的抗病原和静血性质.
科学领域:
- 生物材料科学 生物材料科学
- 材料化学 材料化学
- 生物医学工程 生物医学工程
背景情况:
- 新型药物输送系统在材料加工和生物相容性方面面临挑战.
- 在药物输送中需要可持续的,生物相容的材料和多功能制造方法.
研究的目的:
- 开发使用非共价合成的林氏纤维纤维-酸盐生物复合物.
- 评估这些新型生物复合材料的抗病原和静血性质.
- 评估它们适用于向药物输送和创伤管理的适用性.
主要方法:
- 通过非共价合成利用生物质衍生的纤维素和酸盐用于生物复合材料制造.
- 使用光谱 (IR,拉曼,NMR) 和显微镜技术来描述生物复合材料结构.
- 评估了药物释放动力学,体外生物相容性 (MTT测定),抗病原性作用 (agar扩散) 和静血性质 (血液吸收,凝结指数).
主要成果:
- 生物复合材料框架由于静电相互作用而表现出高孔径.
- 证明了抗病原剂 (gentamicin, rifamycin) 的持续释放.
- 在体外实现了出色的生物相容性 (大约. 90%的细胞活力),显著的抗大肠杆菌效应 (16毫米抑制区),高血吸收 (10倍),高效的血液静止 (BCI <2%).
结论:
- 纤维纤维酸生物复合材料为先进的生物医学应用提供了一个可持续的平台.
- 这些材料显示出抗感染药物输送和有效创伤管理的巨大潜力.
- 该研究表明,在针对性治疗的生物活性接口上使用这些生物复合材料的可行性.
相关概念视频
Introduction to Electrolytes
In humans, electrolytes play a vital role in various physiological processes. Balancing electrolyte levels is essential for normal body functions; their imbalance can be life-threatening. The major electrolytes include sodium, potassium, chloride, calcium, phosphate, and bicarbonate. They are primarily involved in physiological processes, such as nerve signal transmission, membrane trafficking, muscle contraction, buffering body fluids, and balancing water levels in the body.
Role of Sodium
One...
Role of Sodium
One...
Roles of Electrolytes: Chloride and Bicarbonate
Chloride ions contribute to the osmotic pressure gradient distinguishing the intracellular fluid (ICF) from the extracellular fluid (ECF). They counterbalance positively charged ions in the ECF and ensure its electrochemical stability. The renal system's process of chloride absorption and release generally mirrors that of sodium ions.
Conditions such as hypochloremia can arise from insufficient chloride reabsorption by the kidneys, often compounded by extended bouts of diarrhea, vomiting, or...
Conditions such as hypochloremia can arise from insufficient chloride reabsorption by the kidneys, often compounded by extended bouts of diarrhea, vomiting, or...
Acid-Base Balance
The human body maintains a narrow pH range regulated through acid-base balance. This balance is crucial as changes in the hydrogen ion concentration can disrupt cell membrane stability, alter protein structures, and change enzyme activities. The normal pH of arterial blood is 7.4, venous blood and interstitial fluid is 7.35, and intracellular fluid averages 7.0.
When the pH of arterial blood rises above 7.45, it results in a condition called alkalosis. Conversely, a drop below 7.35 leads to...
When the pH of arterial blood rises above 7.45, it results in a condition called alkalosis. Conversely, a drop below 7.35 leads to...
Buffer Systems in the Body
Chemical buffers play a critical role in the body's regulation of pH levels. These systems contain one or more compounds that stabilize pH changes by neutralizing strong acids or bases. When pH levels drop, hydrogen ions bind to a weak base; when pH levels rise, hydrogen ions are released. This dynamic process helps maintain pH within a narrow and stable range essential for normal physiological function.
A typical buffer system in bodily fluids includes a weak acid and its corresponding anion,...
A typical buffer system in bodily fluids includes a weak acid and its corresponding anion,...
Bicarbonate-Carbonic Acid Buffer
The carbonic acid-bicarbonate buffer system is critical for maintaining the body's pH balance. It operates on the equilibrium:
Renal Regulation of Acid-Base Balance
Metabolic reactions in the body produce nonvolatile acids, such as sulfuric acid, which generate an acid load of approximately 1 mEq of H+ per kilogram of body weight daily. Excreting H+ in the urine is essential to balance this acid load.
In the kidneys, cells within the proximal convoluted tubules (PCT) and the collecting ducts secrete hydrogen ions (H+) into the tubular fluid. Specifically, in the PCT, Na+/H+ antiporters secrete H+ while reabsorbing Na+.
However, the intercalated cells in...
In the kidneys, cells within the proximal convoluted tubules (PCT) and the collecting ducts secrete hydrogen ions (H+) into the tubular fluid. Specifically, in the PCT, Na+/H+ antiporters secrete H+ while reabsorbing Na+.
However, the intercalated cells in...


