LDHA and persistent truncus arteriosus: The enrichment of [1,2,3-13C] lactate metabolized from [1,2,3-13C] pyruvate following glycolysis was significantly increased in TAC hearts together with markedly upregulated expressions of glucose transporter 1 (GLUT1), hexokinase-1, and lactate dehydrogenase A (LDHA) compared with the sham group.