Prevalence of Helicobacter pylori genotypes: cagA, vacA (m1), vacA (s1), babA2, dupA, iceA1, oipA and their association with gastrointestinal diseases. A cross-sectional study in Quito-Ecuador

Table 1 Primers sequences

Genes		Sequences (5´—3´)	Fragment (bp)	Reference
16S rRNA H,pylori	Forward	GCGGGATAGTCAGTCAGGTG	706	Valenzuela, 2016 [19]
16S rRNA H,pylori	Reverse	AAGATTGGCTCCACTTCGCA	706	Valenzuela, 2016 [19]
cagA	Forward	GTTGATAACGCTGTCGCTTC	350	Chattopadhyay et al., 2004 [20]
cagA	Reverse	GGGTTGTATGATATTTTCCATAA	350	Chattopadhyay et al., 2004 [20]
vacA (m1)	Forward	GGTCAAAATGCGGTCATGG	290	Atherton et al., 1995 [21]
vacA (m1)	Reverse	CCATTGGTACCTGTAGAAAC	290	Atherton et al., 1995 [21]
vacA (s1)	Forward	CGCATCAACACTAACGCTGA	206	Delgado, 2018 [22]
vacA (s1)	Reverse	GCATAACCGCCCACTTGATT	206	Delgado, 2018 [22]
iceA1	Forward	ATAAGCGGTTGGAGTTTGCG	220	Delgado, 2018 [22]
iceA1	Reverse	TATTCCTGCACCAACTCCCC	220	Delgado, 2018 [22]
dupA	Forward	GGATTTACCGCTTCCTGTGC	228	Delgado, 2018 [22]
dupA	Reverse	GGATTTACCGCTTCCTGTGC	228	Delgado, 2018 [22]
babA2	Forward	AAAGATGATCACAGACGCGC	269	Delgado, 2018 [22]
babA2	Reverse	TTGAGGGGTTGTTGCATGTG	269	Delgado, 2018 [22]
oipA	Forward	CAAGCGCTTAACAGATAGGC	430	Torres et al., 2014 [23]
oipA	Reverse	AAGGCGTTTTCTGCTGAAGC	430	Torres et al., 2014 [23]

ISSN: 1471-230X