相关实验视频
Updated: May 6, 2026

05:39
Murine Model of Wound Healing
Published on: May 28, 2013
65.2K
一个可见光交联的血管和抗炎的GelMA微针阵列补丁共释放氧化和氧气,用于糖尿病伤口愈合
Asad Ullah1, Midhat Batool Zaidi2, Abdulla Al Mamun1
1Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha, Qatar; Biomedical Research Center, Qatar University, Doha, Qatar.
International journal of biological macromolecules
|June 22, 2025
概括
这项研究介绍了一种新型的微针贴片,可以提供氧化 (NO) 和氧 (O2) 以加速糖尿病伤口愈合. 该贴片显示增强细胞增殖,迁移和显著的体内伤口关闭与减少炎症.
科学领域:
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
- 伤口治愈研究研究 伤口治愈研究
背景情况:
- 糖尿病伤口由于愈合受损,造成了严重的医疗负担.
- 关键因素包括血管生成不足和炎症失调.
- 氧化 (NO) 和氧 (O2) 对伤口愈合具有治疗潜力.
研究的目的:
- 开发一种可见光交联的凝甲基 (GelMA) 微针 (MN) 阵列补丁,用于同时输送NO和O2.
- 评估MN贴片用于糖尿病伤口治疗的物理性质,降解概况和体外/体内疗效.
主要方法:
- 使用微型成型和可见光交叉连接制造GelMA MN阵列补丁.
- MN形态 (SEM) 和机械性能 (压缩试验) 的表征.
- 在PBS的体外降解研究和在老鼠皮肤的体内降解研究.
- 在体外细胞增殖和迁移测定 (纤维细胞).
- 在体内评估糖尿病大鼠的伤口愈合,包括组织学分析和生物标志物表达 (TNF-α,TGF-β,IL-10).
主要成果:
- 形成良好的GelMA MNs (高度为650微米),具有足够的机械强度以透皮肤.
- 快速的体外降解 (在PBS中在1小时内降解80%),在体内降解速度较慢 (24小时内降解50%,在48小时内完成).
- 增强纤维细胞增殖 (~10%) 和迁移 (~30%) 在体外.
- 在体内加快伤口愈合与双NO/O2输送MN,不显示局部毒性.
- 在治疗的糖尿病伤口中改善了组织愈合,降低了TNF-α,并提高了TGF-β和IL-10水平.
结论:
- 开发的GelMA MN阵列补丁有效地提供NO和O2以增强糖尿病伤口愈合.
- 该贴片具有合适的物理特性,可控制降解,并促进组织修复的关键细胞过程.
- 这种微针技术为管理具有挑战性的糖尿病伤口提供了一个有前途的治疗策略.
更多相关视频
08:15Polymeric Microneedle Array Fabrication by Photolithography
Published on: November 17, 2015
12.3K
11:13Adenoviral Gene Therapy for Diabetic Keratopathy: Effects on Wound Healing and Stem Cell Marker Expression in Human Organ-cultured Corneas and Limbal Epithelial Cells
Published on: April 7, 2016
9.3K
相关概念视频
Diabetic Foot Ulcer
45
Definition A diabetic foot ulcer (DFU) is a chronic, non-healing wound that develops in individuals with diabetes. It typically occurs on pressure-bearing areas such as the heel, metatarsal heads, or hallux, and carries a high risk of infection and amputation.Pathophysiology • The development of DFUs can be explained by four interconnected mechanisms: neuropathy, ischemia, infection, and impaired wound healing. • Neuropathy is the most common factor. Sensory...
45
Diabetic Retinopathy
66
DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...
66
Diabetic Neuropathy
99
DefinitionDiabetic neuropathy is nerve damage caused by long-standing diabetes mellitus. It results directly from prolonged high blood sugar levels.PathophysiologyThe pathophysiology of diabetic neuropathy involves both metabolic and vascular disturbances triggered by chronic hyperglycemia.Metabolic injury: Elevated glucose levels activate the polyol pathway within nerve cells, leading to the accumulation of sorbitol and fructose. This increases oxidative stress, disrupts normal nerve...
99