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相关概念视频

Bioavailability Enhancement: Drug Stability Enhancement and GI Retention01:05

Bioavailability Enhancement: Drug Stability Enhancement and GI Retention

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Body:Improving a drug's stability in the gastrointestinal (GI) tract is paramount for enhancing its bioavailability and therapeutic effectiveness. Various strategies are employed to protect the drug from the harsh gastric milieu and to ensure its release and absorption at the desired site within the GI tract.Polymer coatings are one such method used to shield drugs from the stomach's acidic environment. By preventing premature drug release, these coatings improve the bioavailability of unstable...
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α-glucosidase inhibitors, including acarbose (Precose), miglitol (Glyset), and voglibose (Voglib) (primarily available in Asia), are drugs that control blood sugar levels by delaying the digestion of starch and disaccharides. They achieve this by inhibiting α-glucosidase enzymes in the intestine, which slow the absorption of carbohydrates in the intestine, which in turn leads to a prolonged release of the glucoregulatory hormone GLP-1 from intestinal L-cells.
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Diarrhea is characterized by the occurrence of frequent, watery bowel movements. Various factors can trigger diarrhea, including viral or bacterial infections, foodborne illnesses, side effects from certain medications, and underlying digestive disorders. If not adequately managed, diarrhea can lead to complications such as dehydration, electrolyte imbalances, and nutrient deficiencies. Severe diarrhea can lead to significant weight loss, malnutrition, and weakened immune function.
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Biguanides, particularly metformin (Glucophage), are insulin sensitizers that enhance glucose uptake, thereby reducing insulin resistance. Unlike sulfonylureas, metformin doesn't prompt insulin secretion, which helps to curb hypoglycemia risk. Metformin is beneficial in treating conditions like polycystic ovary syndrome due to its insulin-resistance reduction capability. The drug's primary action involves curtailing hepatic gluconeogenesis, a significant contributor to high blood...
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Complex carbohydrates consumed cannot be absorbed into the small intestine in their original form. First, they must be hydrolyzed to a monosaccharide form such as glucose or galactose. These monosaccharides are then transported across the intestinal membrane and into the blood via transcellular transport. The intestinal epithelial cells allow the movement of these monosaccharides with a defined 'entry' through membrane transporter proteins present on their apical membrane and...
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Carbohydrate digestion and metabolism break down simple and complex carbohydrates from food into saccharides (i.e., sugars) for the body to use as energy. Carbohydrate digestion starts in the mouth during mastication, or chewing. The masticated carbohydrates remain intact in the stomach. Digestion resumes in the duodenum of the small intestine, where pancreatic alpha-amylase and brush border enzymes of the microvilli convert complex carbohydrates to monosaccharides. Finally, the monosaccharides...
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奎尔丁 - - 基托奥利高糖化合物离子复合物:分子稳定和微生物群介导的葡萄糖调节.

Jingxin Li1, Lu Wang1, Xinru Liu1

  • 1College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China.

Food chemistry
|November 26, 2025
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概括

这项研究创建了一个奎尔素-奇托利高糖 (QC) 复合体,以改善黄类物质的输送和血糖调节. 在糖尿病模型中,QC复合物增强了抗氧化剂活性,并重塑了肠道微生物群.

关键词:
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科学领域:

  • 生物材料科学 生物材料科学
  • 营养生物化学 营养生物化学
  • 微生物组研究 微生物组研究

背景情况:

  • 奎尔塞丁是一种黄类化合物,其生物利用性和治疗效果有限.
  • 基醇糖 (COS) 是具有潜在健康益处的生物活性多糖.
  • 开发有效的生物活性化合物输送系统对于治疗应用至关重要.

研究的目的:

  • 建立一个离子交叉链接的奎尔塞丁-奇托利高糖化物 (QC) 复合物,以增强类的输送.
  • 在糖尿病模型中研究QC复合物的物理化学特性和双重生物活性.
  • 探索QC复合体对宿主抗氧化反应和肠道微生物群组成的影响.

主要方法:

  • 离子交联形成高封装效率的QC复合体.
  • 核磁共振光谱用于阐明分子相互作用和物理化学性质.
  • 使用糖尿病模型进行体内研究,以评估系统和肠道微生物群的影响.

主要成果:

  • 质量控制综合体表现出改善的水溶性和热稳定性.
  • 系统管理激活了Nrf2/HO-1通路,增加了抗氧化酶活性 (SOD,GPX) 并降低了脂质过氧化 (MDA).
  • 复杂调节的肠道微生物群,降低Firmicutes/Bacteroidetes比率并丰富有益细菌,与增加的短链脂肪酸 (SCFA) 生产相关.

结论:

  • 质量控制复合体代表了一种新的食品矩阵设计,用于增强奎尔素输送和血糖调节.
  • COS充当益生菌,可能促进氨酸甘释放并增强其生物活性.
  • 微生物代谢和宿主抗氧化反应之间的协同相互作用为管理代谢障碍提供了一个新的范式.