Prolonged morphine application modulates Bax and Hsp70 levels in primary rat neurons

Area of Science:

• Neuroscience
• Pharmacology
• Cell Biology

Background:

• Morphine, a long-used pain reliever, has conflicting data regarding its effects on neuronal survival.
• Some studies indicate morphine may induce neuronal apoptosis, while others suggest neuroprotective properties.

Purpose of the Study:

• To investigate the impact of morphine on neuronal cell death.
• To determine the effect of morphine on the expression of the pro-apoptotic protein Bax and the molecular chaperone Hsp70.

Main Methods:

• Primary rat neurons were cultured and treated with varying concentrations of morphine.
• Cell death was induced using serum deprivation and staurosporine.
• Levels of Bax and Hsp70 were measured following morphine treatment.

Main Results:

• Prolonged administration of 1µM morphine for 5 days protected primary rat neurons against serum deprivation-induced cell death.
• Morphine treatment led to decreased levels of both Bax and Hsp70 in cultured neurons.

Conclusions:

• Morphine exhibits a protective role against neuronal cell death induced by serum deprivation and staurosporine.
• The observed neuroprotection is associated with reduced expression of Bax and Hsp70.