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當(dāng)前位置:靶點科技(北京)有限公司>>技術(shù)文章>>DDC模型氯膦酸鹽脂質(zhì)體清除巨噬細(xì)胞解決方案
肝病動物模型(DDC造模飼料):DDC主要引起膽道損傷,,也會導(dǎo)致門靜脈周圍肝細(xì)胞損傷,,該模型被描述為PBC和 PSC 的小鼠模型,。造模飼料參考:添加含0.1%DDC的模型飼料,。
肝纖維化動物模型改良飼料法
通過飼喂改良后的飼料或添加劑,,也可以誘導(dǎo)小鼠引起膽汁淤積肝臟損傷模型,。5-二乙氧基羰基-1,,4-二氫二氫吡啶 (DDC) 和 α-萘異硫氰酸鹽(ANIT),。每日給予小鼠含 0.1%DDC飼料,1 周后在膽管上皮細(xì)胞中可見血管細(xì)胞黏附的表達(dá)分子,、骨橋蛋白和腫瘤壞死因子-α 上調(diào),。持續(xù)8 周導(dǎo)致膽卟啉增多,,膽管周圍肌成纖維細(xì)胞活化,引起膽道纖維化與人類硬化性膽管炎相似。每日給予小鼠 0.025% ANIT,,飼喂數(shù)天后,就可引起膽汁淤積性損傷,,引起膽管上皮細(xì)胞損傷,,膽管上皮擴(kuò)張,輕度肝細(xì)胞損傷和門靜脈周圍炎癥導(dǎo)致肝纖維化,。2 化學(xué)性損傷誘導(dǎo)致肝纖維化化學(xué)性肝纖維化是由能造成肝毒性的化學(xué)物質(zhì)所引起的肝細(xì)胞損傷和修復(fù)交替出現(xiàn)導(dǎo)致肝內(nèi)結(jié)締組織異常增生的直接結(jié)果,。造模所使用的常用藥物試劑為四氯化碳(CCl4),、二甲基亞硝胺(DMN)等物質(zhì),這類物質(zhì)具有強烈的肝損害性,,能夠在不同程度破壞肝臟細(xì)胞導(dǎo)致肝內(nèi)結(jié)締組織異常增生,。
肝纖維化動物模型CCl4
四氯化碳(CCl4)是一種無色有機(jī)溶劑,對任何油脂具有很強的溶解性,,尤其是動物油脂,,因此,在人體表現(xiàn)為強肝毒性,。CCl4法是用于復(fù)制肝臟損傷模型的常用方法,。CCL4模型復(fù)制方法成熟,,成功率高達(dá) 89.33%,簡單易行,、經(jīng)濟(jì)安quan,。一般從第 2 周開始,就可出現(xiàn)不同程度肝纖維化程度,,平均 4.9%,,至第 8 周可達(dá)到平均 9.2% 的纖維化,能很好地模擬人類肝纖維化 S0~S4 期的病理特征,,且與乙肝病毒感染所致肝纖維化的病理特征相似,。該方法現(xiàn)已廣泛應(yīng)用于研究鼠類肝纖維化發(fā)生機(jī)制、篩選血清標(biāo)志物以及開發(fā)抗纖維化藥物等,。但該方法由于 CCl4處理后的肝毒性劇烈,,死亡率較高??傮w來說,,該方法在某種程度上基本可以滿足實驗需求,同時也需要改進(jìn)來彌補缺點,。
論文信息:
論文題目: HMGB1 links chronic liver injury to progenitor responses and hepatocarcinogenesis
期刊名稱:J Clin Invest.
時間期卷:2018;128(6):2436-2450.
在線時間:2018年3月20日
DOI:doi.org/10.1172/JCI91786.
產(chǎn)品信息:
貨號:CP-005-005
規(guī)格:5ml+5ml
品牌:Liposoma
產(chǎn)地:荷蘭
名稱:Clodronate Liposomes and Control Liposomes
辦事處:Target Technology(靶點科技)
Chronic liver injury models. Chronic liver injury was induced in 8- to 10-week-old male mice by feeding them a 0.1% DDC diet or an MCD diet supplemented with 0.15% ethionine for 3 weeks and 2 weeks, respectively. For selective deletion of HMGB1 in hepatocytes, Hmgb1fl/fl mice were injected i.v. with 1011 genome copies of AAV8-TBG-Cre or AAV8-TBG-LacZ on day 15 postpartum (for the Mdr2KO mice) or 6 weeks postpartum (for all other mice). For some experiments, mice fed a DDC diet were treated with ethyl pyruvate (40 mg/kg, i.p., given twice weekly throughout the entire time mice were fed DDC diet). For some experiments, mice fed a DDC diet were treated with liposomal clodronate or control liposomes (4 μl/g body weight, i.p., both from Liposoma), on days 4, 8, and 12 after starting the diet.
DDC模型氯膦酸鹽脂質(zhì)體清除巨噬細(xì)胞解決方案
注射方式:腹腔注射(i.p.)
注射劑量:days 4, 8, and 12
注射方案:Clo:Clodronate Liposomes的縮寫
Liposoma氯膦酸鹽脂質(zhì)體巨噬細(xì)胞清除劑Clodronate Liposomes清除效果檢測:
A. Macrophages were ablated in DDC diet treated mice by intraperitoneal injection of liposomal clodronate (n=7 mice) or control liposomes (n=11 mice) as depicted.
B. Macrophages were efficiently ablated by liposomal clodronate as demonstrated by F4/80 immunohistochemistry and qPCR for Emr1 mRNA (enconding F4/80).
C. Macrophage ablation by liposomal clodronate did not affect ductular reactions in DDC diet-treated mice as demonstrated by similar immunohistochemical staining for cytokeratin .
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