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在新生儿猪淋巴的肠淋巴躯干和收集的长期导尿
在新生儿猪淋巴的肠淋巴躯干和收集的长期导尿
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JoVE Journal Medicine
Long-Term Catheterization of the Intestinal Lymph Trunk and Collection of Lymph in Neonatal Pigs

在新生儿猪淋巴的肠淋巴躯干和收集的长期导尿

Full Text
9,841 Views
06:25 min
March 5, 2016

DOI: 10.3791/53457-v

Richard R. Uwiera1, Rabban Mangat1, Sandra Kelly1, Trina C. Uwiera2, Spencer D. Proctor1

1Department of Agricultural, Food and Nutritional Science,University of Alberta, 2Department of Surgery,University of Alberta

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Please note that some of the translations on this page are AI generated. Click here for the English version.

我们提出了一种外科手术,对新生猪的肠道淋巴干进行导管插入,以从传出淋巴液中收集大量的脂质代谢成分。

淋巴导管插入术是一种重要的技术,用于研究脂质和药物代谢、癌症转移和免疫功能所涉及的机制,从各种动物模型中收集大量淋巴液使研究人员能够研究这些过程。该视频详细演示了使用腹侧中线入路对新生猪的肠道淋巴干进行导管插入的外科手术。所有程序均已获得阿尔伯塔大学机构动物护理和使用委员会的批准。

为了进入淋巴管,打开了腹腔。使用切割设置的电烙术打开肌肉层。放置了一个牵开器以在手术过程中保持腹壁张开。

确定关键的腹部器官有助于定位淋巴管。为了更好地进入淋巴管,小肠和结肠的节段被扩展到身体的左侧。淋巴管通过识别肝脏和门静脉的右侧腹段来标记。

新生猪的淋巴管很脆弱,很容易撕裂,因此需要用拭子和钝器仔细解剖。这是肠淋巴管。现在,缝合线用钝钳穿过淋巴管下方。

现在有三根 2-0 丝线穿过淋巴管下方。最尾部的缝合线用于扩张血管并将导管固定在血管上。颅缝线用于将导管固定在血管内。

淋巴管上的一个小切口允许钝钳扩张血管。将导管插入血管中。这必须轻柔地进行,以确保淋巴管不会撕裂。

导管需要推进到最颅骨缝合线之外,以确保其位置良好。三根 2-0 丝线将导管固定在淋巴管中。重要的是,首先使用两条颅缝线将导管固定到血管中,然后使用最尾部的缝合线来系留导管,增加稳定性。

在

关闭腹腔之前确保有良好的淋巴液流是很重要的。导管位于猪的左中腹外侧。使用大镊子将导管从腹腔拉到猪侧面的外表面。

肌肉层在锥形针上以简单的间断缝合模式用 2-0 vicryl 缝合线闭合。在切割针上以连续的皮下缝合模式用 2-0 vicryl 缝合线闭合皮肤。通过出口切口,导管穿过皮肤,并在切割针上用 2-0 尼龙缝合线以荷包线缝合模式闭合。

这种闭合有助于防止沿导管向内追踪的上行感染。当猪仍处于麻醉状态时,将装有淋巴采集瓶的夹克放在猪身上。将导管插入收集瓶中,确保在唤醒猪之前保持良好的淋巴液流。

猪从手术中恢复良好,并且在整个实验过程中保持了良好的淋巴液流。该表显示了从淋巴管收集的淋巴液成分。这些成分包括载脂蛋白 B48、甘油三酯和胆固醇。

蛋白质印迹图显示,在收集的淋巴样品中,存在载脂蛋白 B48 和少量血浆衍生的载脂蛋白 B100。尽管幼猪的淋巴导管插入术在技术上可能具有挑战性,因为淋巴管既脆弱又易碎,但该视频表明,在幼猪中使用适当和仔细的手术技术可以为研究人员提供收集肠道淋巴液的优秀模型。

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医药 109期 肠淋巴干 外科 淋巴传出的 长期的 新生仔猪 ApoB48脂蛋白 脂蛋白代谢 导尿

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