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柚皮素  ≥98%(HPLC),分析标准品

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包装规格：20mg in glass bottle
产品简介：一种葡萄柚中常见的黄酮类化合物，具有抗氧化、自由基清除剂、抗炎化合物、碳水化合物代谢促进剂和免疫系统调节剂的作用。 Naringenin is a flavonoid commonly found in grapefruits which functions as an antioxidant, free radical scavenger, anti-inflammatory compound, carbohydrate metabolism promoter, and immune system modulator. Studies indicate that in vitro Naringenin reduces oxidative damage to DNA. In addition, Naringenin potently inhibits the secretion of very-low-density lipoproteins by cells. Furthermore, Naringenin has been shown to reduce cholesterol concentrations in hepatocytes and plasma cells via inhibiting HMGCR (HMG-CoA reductase). Studies conducted on Hepatitis C virus particles demonstrate that Naringenin can inhibit the virus via a PPAR-mediated mechanism by inhibiting the long term assembly of the virus.
溶解性：熔点：247-250°C (lit.) 溶于乙醚、甲醇、乙醇和DMSO,不溶于水。
储备液保存：-80°C, 6 months -20°C, 1 month
体内实验：1、请依序添加每种溶剂： 10% DMSO→40% PEG300→5% Tween-80→45% saline Solubility: ≥ 3 mg/mL (11.02 mM); Clear solution 此方案可获得 ≥ 3 mg/mL (11.02 mM，饱和度未知) 的澄清溶液。 以 1 mL 工作液为例，取 100 μL 30.0 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加入50 μL Tween-80，混合均匀；然后继续加入 450 μL生理盐水定容至 1 mL。 2、请依序添加每种溶剂： 10% DMSO→90% (20% SBE-β-CD in saline) Solubility: ≥ 3 mg/mL (11.02 mM); Clear solution 此方案可获得 ≥ 3 mg/mL (11.02 mM，饱和度未知) 的澄清溶液。 以 1 mL 工作液为例，取 100 μL 30.0 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。 3、请依序添加每种溶剂： 10% DMSO→90% corn oil Solubility: ≥ 3 mg/mL (11.02 mM); Clear solution 此方案可获得 ≥ 3 mg/mL (11.02 mM，饱和度未知) 的澄清溶液，此方案不适用于实验周期在半个月以上的实验。 以 1 mL 工作液为例，取 100 μL 30.0 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。 ＜1mg/ml表示微溶或不溶。 普西唐提供的所有化合物浓度为内部测试所得，实际溶液度可能与公布值有所偏差，属于正常的批间细微差异现象。 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；⼀旦配成溶液，请分装保存，避免反复冻融造成的产品失效。
体外研究：Naringenin is shown to inhibit the proliferation of HepG2 cells resulted partly from an accumulation of cells in the G0/G1 and G2/M phase of the cell cycle. Naringenin has been shown to induce apoptosis as evidenced by nuclei damage and increased proportion of apoptotic cells. Naringenin triggers the mitochondrial-mediated apoptosis pathway as shown by an increased ratio of Bax/Bcl-2, subsequent release of cytochrome C, and sequential activation of caspase-3. Naringenin exposure significantly reduces the cell viability of A431 cells with a concomitant increase in nuclear condensation and DNA fragmentation in a dose dependent manner. Cell cycle study shows that naringenin induced cell cycle arrest in G0/G1 phase of cell cycle and caspase-3 analysis reveal a dose dependent increment in caspase-3 activity which leads to cell apoptosis.
体内研究：Naringenin supplementation causes a significant reduction in the amount of total triglyceride and cholesterol in plasma and liver. In addition, naringenin supplementation lowers adiposity and triglyceride contents in parametrial adipose tissue. Naringenin-fed animals show a significant increase in PPARα protein expression in the liver. The expression of CPT-1 and UCP2, known to be regulated by PPARα, is markedly enhanced by naringenin treatment. Naringenin increases hepatic fatty acid oxidation through a PPARγ coactivator 1α/PPARα-mediated transcription program. It prevents sterol regulatory element-binding protein 1c–mediated lipogenesis in both liver and muscle by reducing fasting hyperinsulinemia. Naringenin decreases hepatic cholesterol and cholesterol ester synthesis. Naringenin inhibits TNF-α-induced VSMC proliferation and migration in a dose-dependent manner. Mechanistic study demonstrates that naringenin prevents ERK/MAPK and Akt phosphorylation while left p38 MAPK and JNK unchanged. Naringenin also blocks the increase of ROS generation induced by TNF-α.
保存条件：-20℃
注意事项：1、为了您的安全和健康，请穿实验服并戴一次性手套操作。 2、以上信息仅做参考交流之用。

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