Table 3. The changes of segmental concentration of γ-aminobutyric acid (GABA), glycine (Gly), glutamate (Glu) and aspartate (Asp) measured 5 weeks after complete spinal cord transection in the whole tissue homogenates of thoracic (Th) and lumbar (L) segments.

Neurotransmitter (NT)	Spinal cordsegment	NT concentration(µmol/g wet weight tissue)		Percentage of intact (%)
		Intact rats	Spinal rats
GABA	Th6–8	0.53±0.076	0.55±0.080	103
	Th9–10 (lesion)	0.53±0.076	0.36±0.093	67*
	L1–2	0.65±0.008	0.49±0.038	76
	L3–6	0.74±0.045	0.79±0.114	108
Gly	Th6–8	1.96±0.176	1.77±0.245	90
	Th9–10 (lesion)	1.96±0.176	1.17±0.258	60***
	L1–2	2.08±0.153	1.53±0.184	74*
	L3–6	2.51±0.167	2.47±0.202	98
Glu	Th6–8	2.01±0.168	1.97±0.258	98
	Th9–10 (lesion)	2.01±0.168	1.60±0.343	80
	L1–2	2.23±0.182	1.87±0.226	84
	L3–6	2.58±0.244	2.68±0.169	104
Asp	Th6–8	0.90±0.106	0.89±0.111	99
	Th9–10 (lesion)	0.90±0.106	0.59±0.155	66*
	L1–2	1.05±0.146	0.83±0.099	80
	L3–6	1.26±0.059	1.42±0.129	113

All samples were measured simultaneously by means of HPLC and the measurements were carried out in quadruplicates. The data of four rats with complete spinal cord transection performed at thoracic segments (Th9–10) and four intact rats are presented. Data show means ± SD, Two way-ANOVA, Tukey post-hoc tests, *P<0.05, ***P<0.001.