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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Histometric effects of ciliary neurotrophic factor in wobbler mouse motor neuron disease.

We investigated the histological effects of ciliary neurotrophic factor on degenerating motor neurons, their axons, and skeletal muscles in 68 wobbler mice with motor neuron disease. Treatment consisted of recombinant rat or human ciliary neurotrophic factor (or a vehicle solution), 1-mg/kg subcutaneous injection, three times per week for 4 weeks after the clinical diagnosis. The number of motor neurons immunoreactive for calcitonin gene-related peptide was higher in mice receiving rat ciliary neurotrophic factor (p < 0.03), although the number of choline acetyltransferase-reactive neurons was the same in both treated and untreated control groups. Treatment did not prevent vacuolar degeneration of motor neurons. In mice treated with human ciliary neurotrophic factor, the percentage of axons undergoing acute axonal degeneration (myelin ovoids) was smaller in the entire C5 ventral root (p < 0.02) and in the musculocutaneous nerve (p < 0.04), and the number of myelinated nerve fibers was 30% higher in both nerves (p < 0.01 and p < 0.04, respectively) than in controls. In ciliary neurotrophic factor-treated mice, the biceps muscle weight was 20% greater, the mean muscle fiber diameter was 30% larger, and the number of atrophied muscle fibers was 75% lower than that in the vehicle-treated wobbler mice (p < 0.001 for all three results). The number of terminal axonal branching points and the mean length of motor end-plates were also higher in the ciliary neurotrophic factor-treated mice (p < 0.001 and p < 0.02, respectively).(ABSTRACT TRUNCATED AT 250 WORDS)[1]


  1. Histometric effects of ciliary neurotrophic factor in wobbler mouse motor neuron disease. Ikeda, K., Wong, V., Holmlund, T.H., Greene, T., Cedarbaum, J.M., Lindsay, R.M., Mitsumoto, H. Ann. Neurol. (1995) [Pubmed]
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