Engineered heart tissue grafts improve systolic and diastolic function in infarcted rat hearts.
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Engineered heart tissue grafts improve systolic and diastolic function in infarcted rat hearts. / Zimmermann, Wolfram-Hubertus; Melnychenko, Ivan; Wasmeier, Gerald; Didié, Michael; Naito, Hiroshi; Nixdorff, Uwe; Hess, Andreas; Budinsky, Lubos; Brune, Kay; Michaelis, Bjela; Dhein, Stefan; Schwoerer, Alexander; Ehmke, Heimo; Eschenhagen, Thomas.
In: NAT MED, Vol. 12, No. 4, 4, 2006, p. 452-458.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Engineered heart tissue grafts improve systolic and diastolic function in infarcted rat hearts.
AU - Zimmermann, Wolfram-Hubertus
AU - Melnychenko, Ivan
AU - Wasmeier, Gerald
AU - Didié, Michael
AU - Naito, Hiroshi
AU - Nixdorff, Uwe
AU - Hess, Andreas
AU - Budinsky, Lubos
AU - Brune, Kay
AU - Michaelis, Bjela
AU - Dhein, Stefan
AU - Schwoerer, Alexander
AU - Ehmke, Heimo
AU - Eschenhagen, Thomas
PY - 2006
Y1 - 2006
N2 - The concept of regenerating diseased myocardium by implantation of tissue-engineered heart muscle is intriguing, but convincing evidence is lacking that heart tissues can be generated at a size and with contractile properties that would lend considerable support to failing hearts. Here we created large (thickness/diameter, 1-4 mm/15 mm), force-generating engineered heart tissue from neonatal rat heart cells. Engineered heart tissue formed thick cardiac muscle layers when implanted on myocardial infarcts in immune-suppressed rats. When evaluated 28 d later, engineered heart tissue showed undelayed electrical coupling to the native myocardium without evidence of arrhythmia induction. Moreover, engineered heart tissue prevented further dilation, induced systolic wall thickening of infarcted myocardial segments and improved fractional area shortening of infarcted hearts compared to controls (sham operation and noncontractile constructs). Thus, our study provides evidence that large contractile cardiac tissue grafts can be constructed in vitro, can survive after implantation and can support contractile function of infarcted hearts.
AB - The concept of regenerating diseased myocardium by implantation of tissue-engineered heart muscle is intriguing, but convincing evidence is lacking that heart tissues can be generated at a size and with contractile properties that would lend considerable support to failing hearts. Here we created large (thickness/diameter, 1-4 mm/15 mm), force-generating engineered heart tissue from neonatal rat heart cells. Engineered heart tissue formed thick cardiac muscle layers when implanted on myocardial infarcts in immune-suppressed rats. When evaluated 28 d later, engineered heart tissue showed undelayed electrical coupling to the native myocardium without evidence of arrhythmia induction. Moreover, engineered heart tissue prevented further dilation, induced systolic wall thickening of infarcted myocardial segments and improved fractional area shortening of infarcted hearts compared to controls (sham operation and noncontractile constructs). Thus, our study provides evidence that large contractile cardiac tissue grafts can be constructed in vitro, can survive after implantation and can support contractile function of infarcted hearts.
M3 - SCORING: Zeitschriftenaufsatz
VL - 12
SP - 452
EP - 458
JO - NAT MED
JF - NAT MED
SN - 1078-8956
IS - 4
M1 - 4
ER -