Table 1.

Primer sequences used for RT-PCR.

Gene	GenBank accession no.	Direction length	Sequence	Length (bp)
GDNF	NM_019139.1	Upper	5′AGAGGGAAAGGTCGCAGAG 3′	142
		Lower	5′ CTTCACAGGAACCGCTACAA 3′
BDNF	NM_001270630	Upper	5′ GCCCAACGAAGAAAACCATA 3′	98
		Lower	5′ CCAGCAGAAAGAGCAGAGGA 3′
NGF	NM_001277055	Upper	5′CAGGCAGAACCGTACACAGA 3′	183
		Lower	5′ AAACAGTTTGGGGTCCACAG 3′
NT-3	NM_031073.3	Upper	5′GATCCAGGCGGATATCTTGA 3′	162
		Lower	5′GCGTCTCTGTTGCCGTAGT 3′
β-Actin	NM_031144.3	Upper	5′ CCCATCTATGAGGGTTACGC 3′	150
		Lower	5′ TTTAATGTCACGCACGATTTC 3′