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LDL receptor-deficient rabbit

LDL 受体缺失兔在普通或高胆固醇饲料下出现高胆固醇血症和主动脉粥样硬化病变,可用于研究 LDL 清除障碍驱动的病变。

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
LDL receptor-deficient rabbit
Species
rabbit
Genotype / zygosity
Ldlr -/-
Allele
Ldlr

Biological characteristics

Phenotype stage
高胆固醇饲料下病变明显;普通饲料下进展取决于遗传背景和年龄。
Research questions
LDL 受体缺失兔的脂蛋白代谢和主动脉病变;基因编辑兔用于动脉粥样硬化研究的适用性。
Limitations
基因编辑兔的品系和突变细节需按具体来源核对;兔模型成本高、繁殖周期长;病变仍不能完全复制人类斑块破裂和血栓事件。

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. 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
  3. ARRIVE 2.0 guidelines