Table 1.

Number of myenteric neurons/field of view in the proximal gastrointestinal tract

Control	6-OHDA
Esophagus	PGP9.5 neurons	23 ± 2.9	28 ± 4.8
	% ChAT-IR neurons	44 ± 2.2	35 ± 3.1*
	% NOS-IR neurons	57 ± 2.5	69 ± 5.8*
Fundus	PGP9.5 neurons	88 ± 12.4	86 ± 10.9
	% ChAT-IR neurons	58 ± 1.5	49 ± 1.2*
	% NOS-IR neurons	27 ± 2.2	33 ± 2.1*
Corpus	PGP9.5 neurons	114 ± 7.2	136 ± 12.2
	% ChAT-IR neurons	56 ± 3.8	45 ± 3.1*
	% NOS-IR neurons	27 ± 0.3	33 ± 1.4*
Duodenum	PGP9.5 neurons	150 ± 9.3	134 ± 8.4
	% ChAT-IR neurons	56 ± 3.9	46 ± 0.9*
	% NOS-IR neurons	26 ± 2.3	32 ± 1.7*

Data are means ± SE.

^*P < 0.05 vs. control. 6-OHDA, 6-hydroxy-dopamine; PGP9.5, protein gene product; ChAT, choline acetyl transferase; IR, immunoreactive; NOS, nitric oxide synthase.