The intrinsic or the extrinsic pathways of apoptosis in the epidermis after cladribine application? ()
ABSTRACT
Purpose: This study was aimed to
assess the expression of caspase 8 and caspase 9 in the epidermis, during
apoptosis after cladribine administration. Materials and Methods: The
experiment was carried on 10 Wistar rats. The animals were placed into 2 groups:
control group and experimental group. Animals in the control group, in addition
to standard feed and water, were injected with a physiological salt in a
quantity corresponding to the drug dosage, over the course of the experiment.
The experimental group animals were treated with cladribine in the dose of 0.07
mg/kg/24h, for 6 consecutive days in the morning, in 3 cycles with a 5-week gap
in administering the drug. After the completion of the experiment, the animals
were decapitated, and full thickness slices of skin were taken from all the
rats for immunohisto- chemical study. The results of the statistical surveys
were analysed in Statistica 10.0. The difference in intensity of expression of
caspase 9 and caspase 8 in the groups were investigated using the Chiquadrat
test. Statistical significance was considered at p < 0.05. Results: The
statistical analysis found significant correlation in expression of caspase 9
between examined groups (p < 0.0001). There were no statistical relationships
in the presence of the expression of caspase 8 between examined groups (p = 0.0526).
Conclusion: Our findings suggest that mechanism of apoptosis in the rats’
epidermis, induced by cladribine given in the scheme used in the treatment of
MS in humans, involves caspase 9 activity. This means that 2-CdA initiates
the intrinsic apoptosis pathway.
Share and Cite:
Chylinska-Wrzos, P. , Wawryk-Gawda, E. , Lis-Sochocka, M. , Jedrych, M. , Lancut, M. , Bulak, K. , Leszcz-Stankiewicz, J. and Jodlowska-Jedrych, B. (2013) The intrinsic or the extrinsic pathways of apoptosis in the epidermis after cladribine application?.
Journal of Biomedical Science and Engineering,
6, 265-272. doi:
10.4236/jbise.2013.63033.