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  • Title: Cardiac contraction and calcium transport function after severe burn injury in rats.
    Author: Yang J, Yang Z, Li A, Chen F, Qi S, Zhu Y.
    Journal: Chin J Traumatol; 2000 May 15; 3(2):97-101. PubMed ID: 11874650.
    Abstract:
    OBJECTIVE: To examine the function change of myocardial calcium transports and determined what role the change plays in cardiac dysfunction after severe burn injury in rats. METHODS: The contraction and relaxation properties of the left ventricle (LV) were studied in the isolated hearts preparations of Wistar rats at 3, 8, and 24 h after a 30% TBSA (total body surface area) full-thickness burn. The calcium transport function of the sarcoplasmic reticulum (SR) was measured by the millipore filtration technique. RESULTS: The maximal rate of LV pressure (plus minusdp/dtmax) of the burn group was significantly lower than that of the control group (P<0.01). In addition, the calcium-dependent ATPase activity and the coupling ratio of SR were also markedly depressed. CONCLUSIONS: It indicates that the decrease in the SR calcium transport function is one of the important mechanisms for the cardiac contractile dysfunction after severe burn injury.
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