Name: assessment of cardiac morphological and functional changes in mouse model of transverse aortic constriction by echocardiographic imaging
Uploaded: 2016-06-21T14:00:00
Description: Watch this Scientific Journal Video about Assessment of Cardiac Morphological and Functional Changes in Mouse Model of Transverse Aortic Constriction by Echocardiographic Imaging at JoVE.com

The authors have nothing to disclose.

이 프로토콜은 워싱턴 대학의 기관 동물 관리 및 사용위원회의 가이드 라인을 따른다. 1. 수술 절차 및 이미징을위한 준비 <ol><li> TAC 또는 가짜 수술에 따라 C57BL / 6 마우스는 이전 10 설명했다. </li><li> 일주일 TAC 또는 가짜 수술 후, 1 L / 분 O 2 혼합 2 % 이소 플루 란을 유도 챔버에 마우스를 마취. 발가락이나 꼬리 끼에 응답하지 않는하여 적절한 마취를 확인합...

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심장 초음파 널리 심장병 2,6의 설치류 모델에서 심장 기능을 평가하기 위해 사용되었다. 이러한 압력 볼륨 루프 측정 (11) 침입 또는 터미널 방법 비교 및 생체 심장 (12), 심 초음파가 살고있는 동물의 지속적인 심장 구조 및 기능 변화를 평가하기위한 강력하고 비 침습적 인 도구를 제공 작동합니다. 신뢰성있는 데이터를 얻기 위해,주의가 가열 장치 및 마취 레벨을 ...

Mouse models of heart disease, such as TAC and myocardial infarction (MI), have been proven to be valuable to study disease mechanisms as well as to develop novel therapeutic strategies3. TAC initially induces compensatory hypertrophy, but prolonged pressure overload leads to cardiac dilatation and heart failure4. The tightness of the aortic constriction directly determines the degree of cardiac hypertrophy and its transition to heart failure. Noninvasive and reliable measurement of pressure gradient across the aortic constriction is essential for the success of these studies. Doppler imaging has been used to assess pressure gradient produced by TAC5, which is a noninvasive alternative for catheter-based pressure measurement.
Echocardiography has been widely used to noninvasively measure cardiac morphology as well as systolic and diastolic function in mice6-8. Two-dimensional B-mode imaging is used to detect abnormal movements or structural changes of the heart. One-dimensional M-mode imaging is used for quantification of cardiac dimensions and contractility. Color and PW Doppler imaging has recently been used on rodent ultrasound, which has broad applications for echocardiography, including measurement of flow directionality and velocity, as well as systolic and diastolic performance9. 
Longitudinal real-time monitoring of cardiac function using echocardiography in B-mode, M-mode, color and PW Doppler mode provides comprehensive assessment of cardiac structure and function in mice under physiological and pathological conditions. Here we provide a detailed description of the use of echocardiographic imaging to monitor dynamic cardiac morphological and functional changes in mice following TAC or sham surgery.

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	<tbody>
		<tr height="41">
			<td height="41" style="height:41px;width:339px;">Anesthesia equipment</td>
			<td style="width:343px;">Harvard Apparatus, 84 October Hill Road 
			Holliston, MA</td>
			<td style="width:175px;">723015</td>
			<td style="width:167px;"></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:339px;">Vevo 2100 Imaging System</td>
			<td style="width:343px;">VisualSonics Inc., 3080 Yonge Street Suite 6100, Box 66, Toronto, Ontario, Canada</td>
			<td style="width:175px;">Vevo 2100</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:339px;">Aquasonic ultrasound gel</td>
			<td style="width:343px;">Parker Laboratories, 286 Eldridge Rd, Fairfield, NJ&#160;</td>
			<td style="width:175px;">03-50</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:339px;">Isoflurane</td>
			<td style="width:343px;">Piramal Healthcare, Inc, 3950 Schelden Circle 
			Bethlehem, PA&#160;</td>
			<td style="width:175px;">NDC 66794-017-25</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:339px;">F/air anesthesia gas filter unit</td>
			<td style="width:343px;">A.M. Bickford, Inc, 12318 Big Tree Rd, Wales Center, NY&#160;</td>
			<td style="width:175px;">80120</td>
			<td></td>
		</tr>
	</tbody>
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assessment of cardiac morphological and functional changes in mouse model of transverse aortic constriction by echocardiographic imaging

Transverse aortic constriction (TAC) in mice has been used as a valuable model to study mechanisms of cardiac hypertrophy and heart failure1. A reliable noninvasive method is essential to assess real-time cardiac morphological and functional changes in animal models of heart disease. Transthoracic echocardiography represents an important tool for noninvasive assessment of cardiac structure and function2. Here we used a high-resolution ultrasound imaging system to monitor myocardial remodeling and heart failure progression over time in a mouse model of TAC. B-mode, M-mode, and Doppler imaging were used to precisely assess cardiac hypertrophy, ventricular dilatation, and functional deterioration in mice following TAC. Color and pulse wave (PW) Doppler imaging was used to noninvasively measure pressure gradient across the aortic constriction created by TAC and to assess transmitral blood flow in mice. Thus transthoracic echocardiographic imaging provides comprehensive noninvasive measurements of cardiac dimensions and function in mouse models of heart disease.

그림 1은 가짜 (그림 1A)를 실시 마우스 심장이나 TAC 수술 (그림 1B)의 대동맥 궁보기의 B 모드 이미지를 보여줍니다. 대동맥 궁, 무명 동맥, 경동맥을 왼쪽, 왼쪽 쇄골 하 동맥이 표시됩니다. 대동맥 협착이 TAC에 명확하게 볼 수 있습니다하지만 마음을 가짜 없습니다. 대동맥보기에서 컬러 도플러 이미지는 그림 2A에 표시됩?...

Watch this Scientific Journal Video about Assessment of Cardiac Morphological and Functional Changes in Mouse Model of Transverse Aortic Constriction by Echocardiographic Imaging at JoVE.com

Assessment of Cardiac Morphological and Functional Changes in Mouse Model of Transverse Aortic Constriction by Echocardiographic Imaging

이 프로토콜의 목적은 비 침습적 및 M B- 모드 초음파 심장 검진 및 컬러 / 맥파 도플러 촬상을 이용하여 횡 대동맥 수축에 의해 생성 된 심장 질환의 마우스 모델에서 심장 구조적 및 기능적 변화를 평가하는 것이다.

심 초음파 이미징에 의해 가로 대동맥 수축의 마우스 모델에서 심장 형태 학적 평가 및 기능 변경

Transverse aortic constriction (TAC) in mice has been used as a valuable model to study mechanisms of cardiac hypertrophy and heart failure1. A reliable ...

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압력 과부하 심장 비대 모델의 창조를위한 쥐의 대동맥 수축 오름차순

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마우스에있는 자기 공명 현미경 영상으로 실험자가 면역 심근염에있는 심장의 이상 유무 비 침습적 평가

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왼쪽된 심 실 비 대의 유도 대 한 생쥐에서 최소 침 습 가로 대동맥 수축의 기술

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