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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。

Outcome measures

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。

Experimental animals

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

Experimental procedures

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.

Model identity

Model name
Watanabe heritable hyperlipidemic rabbit
Species
rabbit
Strain
WHHL
Genetic background
WHHL
Genotype / zygosity
LDL receptor exon 4 deletion

Biological characteristics

Phenotype stage
出生后即出现高脂血症,随年龄进展为晚期主动脉病变。
Research questions
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。
Limitations
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。

Experimental methods

Experimental protocols

Reagents and materials

References

  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 guidelines