Frequency (%, mean ± SD) of VGLUT1+ and VGLUT2+ boutons and percentage of membrane covered by VGLUT1+ and VGLUT2+ boutons on the rat jaw-closing (JC) γ-motoneurons

JC γ-motoneuronJOα-motoneuronJCα-motoneuron
No. of profiles examined (from 4 rats)24204237
Total membrane length examined (μm)1084.63742.13934.2
No. of all boutons examined24918831625
VGLUT1+ boutons
 No. of boutons1759
 % of all boutons0.4 ± 0.7a0.9 ± 1.1a5.8 ± 0.2a
 % of VGLUT1+ or VGLUT2+ boutons1.1 ± 2.2a2.9 ± 3.6a15.2 ± 1.4a
 synaptic covering percentage0.02 ± 0.04a0.7 ± 0.9a4.8 ± 0.6a
VGLUT2+ boutons
 No. of boutons85333342
 % of all boutons34.3 ± 1.834.7 ± 5.332.8 ± 4.1
 % of VGLUT1+ or VGLUT2+ boutons98.9 ± 2.2a97.1 ± 3.6a84.8 ± 1.4a
 synaptic covering percentage6.0 ± 0.7b19.3 ± 2.9b16.3 ± 2.0b
Total VGLUT1+ or VGLUT2+ boutons
 No. of VGLUT1+ or VGLUT2+ boutons86340401
 % of all boutons34.7 ± 1.135.6 ± 4.338.6 ± 4.1
 synaptic covering percentage6.1 ± 0.7b20.1 ± 2.6b21.2 ± 2.4b

indicates significant difference between JC α-motoneurons and jaw-opening (JO) α-/JC γ-motoneurons (one-way ANOVA, Scheffe’s post hoc test, p<0.05).

indicates significant difference between JC γ-motoneurons and JO/JC α-motoneurons (one-way ANOVA, Scheffe’s post hoc test, p<0.05). Data on JC and JO α-motoneurons are from our previously-published experiments and are provided for comparison [6].

Exp Neurobiol. 2019;28:451~457 https://doi.org/10.5607/en.2019.28.4.451
© Exp Neurobiol