Method Article

Isolatie en Excisie van Muriene Aorta; Een veelzijdige techniek in de studie van hart- en vaatziekten

DOI:

10.3791/52172

November 24th, 2014

In This Article

Summary

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Pathology of the aorta can lead to severe morbidity and mortality, therefore research of disease progression and potential therapies is warranted. Here, we present a protocol to isolate and excise the murine aorta to aid researchers in their investigation of cardiovascular disease.

Abstract

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Cardiovascular disease is a broad term describing disease of the heart and/or blood vessels. The main blood vessel supplying the body with oxygenated blood is the aorta. The aorta may become affected in diseases such as atherosclerosis and aneurysm. Researchers investigating these diseases would benefit from direct observation of the aorta to characterize disease progression as well as to evaluate efficacy of potential therapeutics. The goal of this protocol is to describe proper isolation and excision of the aorta to aid investigators researching cardiovascular disease. Isolation and excision of the aorta allows investigators to look at gross morphometric changes as wells as allowing them to preserve and stain the tissue to look at histologic changes if desired. The aorta may be used for molecular studies to evaluate protein and gene expression to discover targets of interest and mechanisms of action. This technique is superior to imaging modalities as they have inherent limitations in technology and cost. Additionally, primary isolated cells from a freshly isolated and excised aorta can allowing researchers to perform further in situ and in vitro assays. The isolation and excision of the aorta has the limitation of having to sacrifice the animal however, in this case the benefits outweigh the harm as it is the most versatile technique in the study of aortic disease.

Introduction

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De aorta speelt een centrale rol in cardiovasculaire functie leveren het lichaam met zuurstofrijk bloed en vergelijkbaar met andere delen van het lichaam, is vatbaar voor ziekten. Voorkomende aorta ziekten omvatten atherosclerose en aneurysma, waarin de resultaten van genetische en omgevingsfactoren zoals voeding, roken en sedentaire levensstijl 1 zijn. Atherosclerose is de afzetting van calcium en op lipide gebaseerde plaque de aortawand typisch in patiënten met chronische hyperlipidemie 2. Aneurysma's worden gekenmerkt door afbraak van de structurele componenten van de aorta en verdunning van de vaatwand, gevolgd door een vergrote diameter....

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Protocol

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Alle dierlijke procedures werden uitgevoerd met de goedkeuring van de Institutional Animal Care en gebruik Comite van de Universiteit van Cincinnati en in overeenstemming met de Gids voor de zorg en het gebruik van proefdieren van de National Institutes of Health (NIH Publication No. 85-23, herzien in 1996).

1. Voorbereiding van de muis

  1. Euthanaseren door het blootstellen van het dier naar een supratherapeutische dosis verdoving, isofluraan ingeademd door te voeren. Controleer primaire euthanasie via teen knijpen als een schadelijke stimulus. Secundaire methode van euthanasie, diafragma snijden, zal plaatsvinden in een aanstaand....

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Results

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Na voltooiing van de procedure, zal er een intacte aorta afkomstig uit het hart, afdalen in de borst- en buikholte, met de nierslagaders nog steeds verbonden (figuur 1A) zijn. Vanaf hier kunnen de aorta worden afgebeeld in situ morfometrische veranderingen die diagnostisch in de studie van abdominale aorta aneurysma (figuur 1B en 1C) zijn kwantificeren. Vervolgens kan de aorta verwijderd, gefixeerd en gekleurd te kijken histologische veranderingen. Een algemene.......

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Discussion

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Aortic disease can lead to significant systemic pathology and possibly death in severe cases. Treatment options are currently limited therefore continued research in the field is necessary10. Murine models are ideal to further study disease progression and potentially therapeutic options4. Therefore, the successful completion of the method described in this manuscript will provide investigators with the tools to measure disease progression and drug efficacy.

This techniq.......

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Disclosures

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De auteurs hebben niets te onthullen.

Acknowledgements

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De auteurs hebben geen dankbetuigingen.

....

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Materials

List of materials used in this article
NameCompanyCatalog NumberComments
IsofluraneMed-Vet International#RXISO-250
70% ethanolFisher07-678-001
Phosphate buffered salineSigma AldrichP5368-10PAK
Surgical tape3M1527-1
Sterile gauzeDukal Corporations1312
25 gauge needleBD305122
10 ml syringeBD309604

References

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  1. Go, A. S., et al. Heart disease and stroke statistics--2014 update: a report from the American Heart Association. Circulation. 129 (3), 28-292 (2014).
  2. Ross, R., Harker, L. Hyperlipidemia and atherosclerosis. Science. 193 (4258), 1094-1100 (1976).

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Tags

Murine Aorta IsolationAortic ExcisionCardiovascular Disease StudyThoracic Cavity ExposurePerfusion With SalineOrgan Removal TechniquePerivascular Tissue ExcisionDissecting Microscope UseMolecular Analysis PreparationPrimary Cell Isolation

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