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. Author manuscript; available in PMC: 2015 Jul 1.

Published in final edited form as: J Mol Cell Cardiol. 2012 Nov 28;55:92–100. doi: 10.1016/j.yjmcc.2012.11.008

Table 3.

Molar percent enrichment (MPE) of glutamine, glutamate and CAC intermediates in isolated working heart perfused with [U-¹³C]glutamine under control condition.

Metabolites /MPE	M+1	M+2	M+3	M+4	M+5
Glutamine	n.d.	n.d.	0.6	3.6	47.5
Glutamate	0.5	0.2	0.4	0.1	2.6

α-Ketoglutarate	0.1	0.3	0.5	0.6	1.3

Values are means of 2 heart perfusion experiments. MPE values for other CAC intermediates were <1.1%.