Lalipat Chatdarong. The degeneration of sensory and motor neurons after axotomy in young adult rat and prevention by leukemia inhibitory factor. Master's Degree(Physiology). Chulalongkorn University. Office of Academic Resources. : Chulalongkorn University, 2000.
The degeneration of sensory and motor neurons after axotomy in young adult rat and prevention by leukemia inhibitory factor
Abstract:
Leukemia inhibitory factor, (LIF), a multifunction polypeptidecytokine, has been demonstrated to it prevent apoptosis of sensory andmotor neurons in newborn rats. This study has investigated and compared thetime course of sensory and motor neuron loss after axotomy only withaxotomy with ligation. The study investigated whether LIF also supports thesuvival of axotmized sensory and motor neurons in adult rat. It was foundthat the loss cells in the DRG of axotomy with ligation group at the C7 ,C8, and T1 levels were nearly the same as the loss cells in the DRG ofaxotomy only group. In motor neuron, there was no different between theaxotomy only group and the axotomy with ligation group. The median andulnar nerve of adult rats were unilateral transected and treated witheither the phosphate buffer saline (PBS) or LIF. It was clear that thesurvival cell in LIF-treated group was higher than the PBS group at everylevels. However , a significant differences were shown at the T1 level (1week), C7 and T1 (2 weeks), and C7 to T1 (4 weeks)of the DRG , and C7 (1week) of the motor neuron. The results demonstrated that the apotosis ofthe motor neuron was found only within the first week after nerve axotomy.