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. 2021 Feb 4;11:106. doi: 10.1038/s41398-021-01223-y

Fig. 3. Golgi analysis CA1.

Fig. 3

Neuron morphology analysis results for Cntn4+/+, Cntn4+/-, and Cntn4-/- mouse hippocampus CA1. A Schematic representation of the hippocampus CA1 with labeled Bregma anterior-posterior. Adapted from Paxinos and Franklin, 2001. B Golgi staining in Cntn4+/+ and Cntn4-/- mouse hippocampus CA1 (left), exemplary tracings of pyramidal neurons (right). The scale bar represents 40 µm. The arrowheads show differences in basal neurite length. C, E Quantitative morphological results for the apical and basal dendrites respectively. p = 0.04, 0.03 (apical volume); p = 0.02, 0.007 (apical surface area); p = 0.04, 0.04 (basal total neurite length); p = 0.02 (basal dendritic complexity index); p = 0.02 (basal volume); p = 0.04, 0.04 (basal surface area). D, F Sholl plots indicate the distribution of respective apical and basal dendritic intersections and length at increasing distance from the center of the cell body. p = 0.004, 0.02 (apical Sholl intersection); p = 0.02, 0.05, 0.04 (basal Sholl intersection); p = 0.03 (basal Sholl lengths). Quantitative analysis was performed, in each area, on at least six slices in Cntn4+/+, Cntn4+/-, and Cntn4-/- mice (n = 5 mice per genotype). Data are presented as mean ± S. E. M, n = 19 (Cntn4+/+), n = 14 (Cntn4+/-), n = 14 mice (Cntn4-/-). G Schematic view of the five different spine morphology categories, A = thin; B = stubby; C = mushroom; D = abnormal (several types); E = double mushroom. Quantitative morphological data on the first 25 μm (50 μm to 75 μm) of Golgi-stained branches of the proximal part of the apical dendrite in pyramidal neurons of the CA1 hippocampus region in Cntn4+/+, Cntn4+/-, and Cntn4-/- mice indicate a significant difference in H total number of spines (including all morphological categories), and I relative distribution of mushroom spines. Data are presented as mean ± S. E. M, n = 10 (Cntn4+/+), n = 14 (Cntn4+/-), and n = 8 mice (Cntn4-/-), p = 0.04, 0.04 (total spine), p = 0.021, 0.029 (mushroom-type spines).