Summary
Abstract
Protocol
Discussion
Acknowledgements
Materials
References
Biology
Transverse Aortic Constriction in Mice
Transverse aortic constriction (TAC) in the mouse is a commonly used experimental model to study mechanisms underlying cardiac hypertrophy and heart failure development. Here, we describe procedures to constrict the aorta to create a reproducible degree of cardiac hypertrophy in mice.
Part 1: Preparation of Operating Field
- The operating field is disinfected with 75% isopropyl alcohol.
- Make sure the heating pad is on and at the right temperature. A recommended system is a Gaymar circulating water pump connected to a therapy pad that is maintained at 37 °C ± 1 °C. It is important to maintain normal body temperature during surgery as to avoid a rapid decrease in heart rate.
- Surgical tools are sterilized in a hot bead sterilizer before surgery. For this proc.......
TAC, which mimics human aortic stenosis, is a common method to induce cardiac hypertrophy and heart failure in mice. Alternative sites for aortic constriction include the ascending and abdominal aorta. Ascending aortic constriction provides an extreme and more rapid overload on the left ventricle (LV). In contrast, abdominal aortic constriction leaves intact a larger portion of the circulation as a means of possible compensation.8 Therefore, TAC is often the preferred model as it provides for adequate LV overl.......
X.H.T.W. is a W.M. Keck Foundation Distinguished Young Scholar in Medical Research, and is also supported by NIH/NHLBI grants R01-HL089598 and R01- R01HL091947, and Muscular Dystrophy Association grant #69238. R.J.v.O. is the recipient of the 2008-2010 American Physiological Society Postdoctoral Fellowship in Physiological Genomics. This work is also supported in part by the Fondation Leducq Alliance for CaMKII Signaling in Heart.
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| Material Name | Type | Company | Catalogue Number | Comment |
|---|---|---|---|---|
| Name | Company | Catalog Number | Comments | |
| Gaymar T/pump | Harvard Apparatus | Model TP-500 | Circulating water pump | |
| Temp. therapy pads | Harvard Apparatus | 60-3414 | ||
| Hot bead sterilizer | Fine Science Tools | 18000-45 | ||
| Blunt scissors | Roboz | RS-5980 | ||
| Angled spring scissors | Roboz | RS-5668 | ||
| Chest retractor | Fine Science Tools | 17002-02 | ||
| Course curved forceps | Roboz | RS-5138 | ||
| Dumont fine 45° angled forceps | Fine Science Tools | 11253-25 | ||
| Needle holder | Fine Science Tools | 12565-14 | ||
| Electric shaver | General Electric | For shaving mouse fur | ||
| PE 90 tubing | BD | 427420 | For intubation | |
| MiniVent (ventilator) | Harvard Apparatus | Type 845 | ||
| Betadine | Fisher | 19-027132 | May be purchased at medical supply store | |
| Sterile gloves | Mckesson | 20-1565 | ||
| Stereo microscope | Unico | ZM186 | ||
| 6-0 silk suture | Fine Science Tools | 18020-60 | ||
| 27 ½ gauge needle | BD | 305109 | ||
| 6-0 prolene suture | Mckesson | 3286 | ||
| Buprenorphine | Institutional Animal Facility |
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