Table 2.

Serum levels of NGF and NPs in different subgroups of AD patients compared to control

NPs	Mild AD	Moderate AD	Severe AD	Control	P
NGF	1970±230	2199±318	3297±412	89.8±55.9	<0.05*
VIP	345±65	321±70	429±62	307.1±42.6	>0.05
CGRP	110±23	115±52	170±85	82.2±9.1	>0.05
NPY	34.7±15	43.9±9.8	72.9±11.9	11.61±7.4	>0.05