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RT/2-8℃/-20℃
3年
Astaxanthin
999
北京康瑞纳生物科技有限公司
472-61-7
250mg
虾青素 472-61-7 虾青素 472-61-7
产品名称:虾青素 472-61-7
产品编号:A1317
中文别称 虾青素,Β-胡萝卜素-4,4'-二酮
英文别称 Astaxanthin
CAS 472-61-7
分子式 C40H52O4
分子量 596.84
储存条件 -20℃
有效期 2年
溶解性 5mg/ml chc.l3
来源 合成
纯度 ≥98%
性状 紫色粉末至紫黑色粉末
包装 瓶
规格 250mg 1g
虾青素空间结构:内消旋:外消旋:消旋=1:2:1
天然虾青素又称为虾红素,是一种极其珍贵的健康原料,可用于开发提升免疫力、抗氧化、抗炎、眼睛和大脑健康、调节血脂等方面的天然、健康产品。目前主要作为人类高级保健食品、药品的原料;水产养殖(目前主要是大马哈鱼、鳟鱼和三文鱼)、家禽养殖的饲料添加剂;化妆品添加剂。
它能显著提高人体的免疫力,由于其能与骨骼肌非特异结合,可有效清除肌细胞中因运动产生的自由基,强化需氧代谢,因此具有显著的抗疲劳作用。
它是唯一能通过血脑屏障的类胡萝卜素,具有真正的抗衰老作用,有效抗氧化是一切美容活动的基础,由于其超强的抗氧化作用,可以有效除皱抗衰、防晒美白以及除去因年龄所致的黄褐斑,在预防和治疗“年龄相关性黄斑变性”、改善视网膜功能方面具有良好效果,以上均在美国得以明确证实。
人工合成虾青素的稳定性和抗氧化活性亦比天然虾青素低 .由于虾青素分子两端的羟基(-OH)可以被酯化导致其稳定性不一样,天然虾青素90%以上酯化形式存在,因此较稳定,合成虾青素以游离态存在,因此稳定性不一样,必须要进行包埋才能稳定。合成虾青素由于只有1/4左右的左旋结构,因此其抗氧化性也只有天然的1/4左右。
虾青素是过氧化物酶体增殖物活化受体γ (PPARγ) 的抑制剂。
描述 是过氧化物酶体增殖物活化受体γ (PPARγ) 的抑制剂。(It is an inhibitor of peroxisome proliferator-activated receptor gamma (PPARγ).)
靶点 PPAR
通路 Cell Cycle;DNA Damage/DNA Repair;Metabolic Enzyme&Protease
生物活性 Astaxanthin (β-Carotene-4,4'-dione, Trans-Astaxanthin), a xanthophyll carotenoid, is a nutrient with unique cell membrane actions and diverse clinical benefits with excellent safety and tolerability.[1-2]
In Vitro Astaxanthin is a carotenoid nutrient with molecular properties that precisely position it within cell membranes and circulating lipoproteins, thereby imbuing them with potent antioxidant and anti-inflammatory actions. Astaxanthin also effectively protects the double membrane system of mitochondria, to the point of boosting their energy production efficiency. In cultured cells, astaxanthin protects the mitochondria against endogenous oxygen radicals, conserves their redox (antioxidant) capacity, and enhances their energy production efficiency. Astaxanthin has also protected human LDL against oxidative attack. Astaxanthin specifically protects the mitochondria of cultured nerve cells against toxic attack and stimulates the proliferation of cultured nerve stem cells. It effectively protects cultured nerve cells against hydrogen peroxide toxicity, and down-regulates genes linked to cell death and up-regulates genes linked to cell survival[1].
In Vivo In pharmacokinetic studies, after ingestion of esterified natural astaxanthin, only unesterified astaxanthin appears in the blood. Astaxanthin's bioavailability is substantially affected by meal timing and by smoking. Supplementation with astaxanthin may lower lipid peroxidation in vivo. Astaxanthin significantly improves the memory performance of mice in the Morris water maze. It has demonstrated safety in numerous human clinical trials. The doses of astaxanthin used in clinical trials have ranged from 1 mg/day to 40 mg/day (with the majority in the 6-12 mg range); single-dose pharmacokinetic studies use up to 100 mg per dose[1].
细胞实验 In vivo tests were performed in BALB/c mice (4-6 weeks old) infected with Trypanosoma cruzi and supplemented with ASTX (10 mg/kg/day) and/or nifurtimox (NFMX; 100 mg/kg/day). Results show that ASTX has some detrimental effects on axenically cultured parasites, but not when cultured with mammalian cell monolayers. In vivo, ASTX did not have any therapeutic value against acute Trypanosoma cruzi infection, used either alone or in combination with NFMX. Infected animals treated with NFMX or ASTX/NFMX survived the experimental period (60 days), while infected animals treated only with ASTX died before day 30 post-infection. ASTX did not show any effect on the control of parasitemia; however, it was associated with an increment in focal heart lymphoplasmacytic infiltration, a reduced number of amastigote nests in cardiac tissue, and less hyperplasic spleen follicles when compared to control groups. Unexpectedly, ASTX showed a negative effect in infected animals co-treated with NFMX. An increment in parasitemia duration was ob.served, possibly due to ASTX blocking of free radicals, an anti-parasitic mechanism of NFMX. In conclusion, astaxanthin is not recommended during the acute phase of Chagas disease, either alone or in combination with nifurtimox.[2]
动物实验 Vero cells (5 × 103/well) are seeded and cultured for 24 h and then infected with trypomastigotes (10 parasites/cell). Once intracellular parasites are ob.served (about 96 h after infection), the old medium is replaced with fresh supplemented DMEM with different ASTX (Astaxanthin) doses (1, 5, 10, 20, or 30 μg/100 μL). As a control, co-cultures are kept with NFMX (400 μg/100 μL) or with no ASTX or NFMX supplementation. After 24 h of incubation, microscopic morphological changes in the co-culture, such as loss of normal shape of T. cruzi infected Vero cell, changes of normal parasite shape or motility, and variations in the presence of intra- or extra-cellular parasites are evaluated by a trained technician. Additionally, parasite viability is evaluated by Trypan blue stain assay.[2]
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Ren L, Liu J, Liu C, Yang T, Wu X, Zhang X, Yang L, Xia J, Li W. AIn Vitro Cell(RAW264.7 cells;100 ng/mL LPS,24 h at 37 °C) RAW264.7 cells were seeded in confocal dishes at a density of 1 × 105 cells per dish. After the culture of 24 h, cells were treated with 100 ng/mL LPS in different media, including a control medium, PACDFe extract, and PACDFe hydrogel extract supplemented with 1 μM LL-37 for another 24 h at 2112 °C. 更多文献信息请详询客服
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