The expression of NAD+ salvage enzymes and NAD+-consuming enzymes in hSOD1G93A astrocytes is not altered.
A, mRNA levels of the indicated genes in confluent non-transgenic (NonTG) and hSOD1G93A (G93A) spinal cord astrocyte cultures. Each data bar represents the mean ± S.D. (error bars) of at least three independent experiments. B, SIRT1 and SIRT3 protein levels in non-transgenic and hSOD1G93A astrocytes. Actin levels were used as a loading control. Each lane represents an independent biological replicate. (SIRT1 quantification: non-transgenic, 100 ± 19; hSOD1G93A, 102 ± 11; SIRT3 quantification: non-transgenic: 100 ± 6; hSOD1G93A, 92 ± 7. No significant changes were found.)