Neuron counts in the SCG of adult rats were estimated by 2 independent stereology laboratories following anti-NGF treatment.
Neither young (6–8 weeks) nor fully mature (7–8 months) adult rats lose SCG neurons following anti-NGF treatment.
Immunohistochemistry minimized detection bias and confirmed no loss of neurons stained with tyrosine hydroxylase.
These findings are important for understanding the potential risks associated with using anti-NGF therapeutics for treating pain.