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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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Laser Capture Microdissection of Highly Pure Trabecular Meshwork from Mouse Eyes for Gene Expression Analysis
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高葡萄糖诱导的转录基因变化,在人类的椎状网状细胞.

Shivendra Singh1, Srimathi Raghavan1, Niketa A Patel2

  • 1Ophthalmology, Indiana University School of Medicine, Indianapolis, IN, USA.

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概括

糖尿病患者的高葡萄糖水平会诱导人体带网状细胞的氧化应激和纤维化,从而导致青光眼的发病. 这些发现表明,准这些途径可能会预防糖尿病绿内障.

关键词:
细胞灭亡 (apoptosis) 是一种死亡的过程.自自是一种自的过程.纤维化 纤维化 纤维化眼光障碍 眼光障碍 眼光障碍 眼光障碍过高血糖症的发生.氧化应激是一种氧化应激.脊柱状的网状网状网状网状网状网.

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科学领域:

  • 眼科医生 眼科 眼科
  • 分子生物学分子生物学
  • 糖尿病学 糖尿病学

背景情况:

  • 玻璃眼瘤是不可逆转失明的主要原因,通常与因状眼网 (TM) 功能障碍引起的眼内压力升高 (IOP) 有关.
  • 糖尿病 (DM) 是青光眼的危险因素,但高血糖对TM影响的潜在分子机制尚不清楚.

研究的目的:

  • 研究高葡萄糖对人类TM (HTM) 细胞基因表达的影响.
  • 为了确定分子途径,有助于TM功能障碍和玻璃眼病原体在糖尿病条件.

主要方法:

  • 在正常血糖和高血糖条件下培养的初级HTM细胞.
  • mRNA测序 (mRNA-seq) 用于识别差异表达的基因.
  • 定量PCR (qPCR) 和STRING网络分析用于验证和相互作用预测.

主要成果:

  • 高葡萄糖显著改变了HTM细胞中的基因表达,发现了25个差异表达的基因.
  • 上调的基因表明氧化应激增加 (TXNIP),细胞亡,免疫反应 (CCL7,CHI3L1) 和纤维化 (SNAI1,FGF7,KRT19).
  • 自基因 (HSPA6,LAMP3) 的下调表明蛋白质质量控制受损,而增加的ECM蛋白表明TM纤维化.

结论:

  • 高血糖引起的氧化应激,TM细胞的亡,炎症和纤维化会损害水性幽默的外流并提高IOP.
  • 糖尿病中的代谢变化有助于TM功能障碍,增加了玻璃眼风险.
  • 准氧化应激和纤维化通路为糖尿病绿内障提供了潜在的治疗策略.