Table 2.

Number of NPY-positive neurons in different sub-regions of the hippocampus, in ACD and in control rats, at different times following the last intragastric infusion (T1, T16, T72).

Time	Hippocampus sub-regions	CTR	ACD	Statistic
				t	p
T1	CA1	184 ± 4.3	109 ± 11.0	23.05	<0.001
	CA2	236 ± 6.2	106 ± 9.3	39.82	<0.001
	CA3	53 ± 3.4	48 ± 4.8	1.56	<0.05
	DG	45 ± 13.0	21 ± 6.2	7.35	<0.001
T16	CA1	182 ± 36.0	406 ± 80.0	12.14	<0.001
	CA2	233 ± 46.0	381 ± 76.0	8.023	<0.001
	CA3	52 ± 10.3	66 ± 12.3	1.02	>0.05
	DG	24 ± 4.2	103 ± 22.0	4.445	<0.001
T72	CA1	185 ± 36.0	460 ± 72.0	12.07	<0.001
	CA2	237 ± 49.3	313 ± 53.0	3.511	<0.01
	CA3	56 ± 10.2	331 ± 69.3	12.07	<0.001
	DG	25 ± 2.9	491 ± 77.1	21.53	<0.001

Values are mean ± S.D. of 12 sections for each experimental condition. CTR, controls; ACD, acetaldehyde; DG, dentate gyrus.