跳至主要内容

Watanabe heritable hyperlipidemic rabbit

WHHL 兔由 LDL 受体基因第 4 外显子自发缺失导致受体功能缺陷,纯合子在普通饲料下即出现明显高胆固醇血症和高甘油三酯血症,并发生主动脉粥样硬化及肌腱黄色瘤;病变可进展为含平滑肌细胞来源泡沫细胞的晚期病变。

结局指标

获得可用于兔主动脉斑块组织学分级和组成的 HE 染色切片。

实验动物

动脉组织石蜡切片 H&E 染色
年龄
not reported in the cited source
组织
aortic root; thoracic aorta

实验步骤

H&E staining **Dewaxing:** Paraffin sections are placed in xylene for 3 x 00:03:00 H&E staining **Rehydration: ** Paraffin sections are placed in - 100% EtOH for 3 x 00:03:00 - 95% EtOH for 1 x 00:03:00 - Rinse with water H&E staining **Hematoxylin staining: ** Paraffin sections are stained with hematoxylin for 00:00:20 and rinse under running water for 00:01:00 H&E staining **Differentiation and bluing:** Paraffin sections are placed into the bluing reagent for 00:01:00 and rinse under running water for 00:01:00 _This step results in a blue coloration of the nuclei._ H&E staining **Eosin staining:** Parrafin sections are counterstained with Eosin for 00:00:10 _This step results in a pink coloration of the cytoplasmic components and connective tissue fibers._ H&E staining **Dehydration and Clearing:** Paraffin sections are placed in - 95% EtOH for 00:02:00 - 100% EtOH for 2 x 00:02:00 - Xylene for 2 x 00:02:00 H&E staining **Mounting:** Parrafin sections are mounted with a glass coverslip using Permount.

模型身份

模型名称
Watanabe heritable hyperlipidemic rabbit
物种
rabbit
品系
WHHL
遗传背景
WHHL
基因型/合子状态
LDL receptor exon 4 deletion

生物学特性

表型出现阶段
出生后即出现高脂血症,随年龄进展为晚期主动脉病变。
适用研究问题
LDL 受体缺陷导致的高胆固醇血症与病变进展;家族性高胆固醇血症的病理机制和干预。
模型局限
WHHL 兔为家族性高胆固醇血症模型,不能代表多基因、多因素的人类动脉粥样硬化;兔与人类在脂蛋白和免疫系统上仍有差异;病变进展和并发症谱与人类不完全一致。

实验方法

实验方案

配套试剂与材料

参考文献

  1. Fan J, et al. Rabbit models for the study of human atherosclerosis: from pathophysiological mechanisms to translational medicine. Pharmacology & Therapeutics. 2015;146:104-119. DOI:10.1016/j.pharmthera.2014.09.009; PMID:25277507.
  2. Getz GS, Reardon CA. Animal models of atherosclerosis. Arteriosclerosis, Thrombosis, and Vascular Biology. 2012;32(5):1104-1115. DOI:10.1161/ATVBAHA.111.237693; PMID:22383700.
  3. protocols.io · vv1 · Nathalia L. Oliveira; samantha.gruenheid · This is an open access protocol distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
  4. ARRIVE 2.0 官方规范