Table 1.

Effect of B. aetnensis C. Presl chloroformic extract on GSH levels in primary rat astroglial cell cultures at 14 DIV exposed to 500 μM glutamate for 24 hrs.

Treatment	nmoles/mg protein
Control	15 ± 0.9
5 μg/mL B. aetnensis C. Presl	15 ± 0.2
10 μg/mL B. aetnensis C. Presl	14.8 ± 0.6
20 μg/mL B. aetnensis C. Presl	14.7 ± 0.9
Glutamate 500 μM	9.5 ± 0.4a
Glutamate 500 μM + 5 μg/mL B. aetnensis  C. Presl	10.6 ± 0.3a
Glutamate 500 μM + 10 μg/mL B. aetnensis C. Presl	11.20 ± 0.5ab
Glutamate 500 μM + 20 μg/mL B. aetnensis C. Presl	14 ± 0.3b

GSH levels are expressed as nmol of GSH/mg protein. Each value represents the mean ± SD of 5 separate experiments. ^a P < 0.01 versus control and ^b P < 0.01 versus glutamate.