Table 1.

Quantification of ultrastructural variables in mossy fiber terminals from wild-type and synapsin III knock-out mice

Morphological variablesWild typeKnock-out
Vesicle density, number/μm35608  ± 1375878  ± 106
MFT profile area, μm23.89  ± 0.144.03  ± 0.17
Mitochondrial profile area, μm20.24  ± 0.020.26  ± 0.03
Spine profile area, μm20.82  ± 0.050.92  ± 0.05
Net MFT area, μm22.85  ± 0.112.86  ± 0.12
Number of mitochondria profiles/MFT profile4.18  ± 0.454.30  ± 0.44
Number of spines/MFT profile3.36  ± 0.114.13  ± 0.27*
  • Data are expressed as mean ± SEM.

  • * p < 0.05, compared with wild type by two-tailed unpaired Student's t test.