Table 2

Biochemical assay of fibroblasts from complementation group A (CG-A) patients

No.TypeC24/C16DHAP-AT
37°C30°C37°C30°C
A-06ZS0.0400.0690.090.15
A-14ZS0.0110.0420.180.30
A-10ZS0.0070.0300.270.46
A-05NALD0.0770.1990.391.65
A-08NALD0.0130.2870.191.55
Control0.5220.4781.531.90
  • Fibroblasts were cultured for eight days at either 37°C or 30°C, and then assayed for beta oxidation activities of lignoceric (C24) and palmitic acids (C16) and the ratio of C24/C16 was calculated. DHAP-AT activity was measured in each cell line. These results were the average of duplicates. DHAP-AT activity was indicated as nmol/mg/120 min. The methods have been described in Suzuki et al 20 and Shimozawa et al.21