Table 3.

Morphometric assessment (expressed as mean ± standard deviation) of organelles in control and rotenone-exposed groups. The analysis was conducted employing a one-way ANOVA with Tukey HSD post hoc analysis. Same superscripts letters indicate a significant difference (p < 0.05).

		Rotenone
	Control	0.5 µM for 24 h	0.5 µM for 48 h
Numerical density of mitochondria (per cell)	24.8 ± 5.4 a	22.7 ± 5.8 b	20 ± 5.1 a
Mitochondrial length (µm)	0.418 ± 0.183 a	0.484 ± 0.173 b	0.478 ± 0.161 c
Numerical density of neuropeptide granules (per cell)	44.3 ± 16.5 a,b	15.7 ± 11.4 a	9.3 ± 14.3 b
Numerical density of neuropeptides granules on cell borders (per linear surface)	11.1 ± 3.2 a,b	5.2 ± 2.4 a	3.1 ± 1.7 b