779 TC of CCK-1 intron 1 is associated with postprandial syndrome (PDS) in Japanese male subjects.
OBJECTIVE
The role of genetics in the susceptibility to functional dyspepsia (FD) is not well established. Cholecystokinin (CCK) is released from enteroendocrine cells in the duodenal mucosa after food ingestion and signals satiation through peripheral or central actions. A common polymorphisms of CCK and it's receptor gene has been shown to be associated with panic disorder and schizophrenia. It was investigated the prevalence of CCK polymorphism in dyspeptic patients in a Japanese population.


METHODS
A total of 124 dyspeptic patients, 119 non-symptomatic healthy controls participated in this study. Dyspeptic patients were also classified by Rome III criteria. T779C of Cholecystokinin (CCK)-1 intron 1, by polymerase chain reaction-restriction fragment length polymorphism. H. pylori infection status was examined by histology or antibody against H. pylori.


RESULTS
Although frequency of CCK-1 polymorphisms in overall dyspeptic patients, subgroups by Roma III criteria and non-symptomatic healthy controls did not show any significant differences, 779 T carriers significantly increased the risk of postprandial syndrome (PDS) in male subjects (53.5% vs, 84.2; OR = 4.63, 95% CI = 1.24-17.31, p = 0.018). This significant association was also remained after logistic regression analysis with adjustment for age and H. pylori infection status (OR = 4.99, 95% CI = 1.31-18.95, p = 0.018). In female and different H. pylori infection status, no significant association was observed between CCK-1 polymorphisms and dyspepsia.


CONCLUSIONS
Our data suggest that the 779 T carriers of CCK-1 intron 1 is associated with an increased risk of PDS in Japanese male subjects.
Tahara
Tomomitsu
T
Department of Gastroenterology, Fujita Health University School of Medicine, Japan. tomomiccyu@yahoo.co.jp
Arisawa
Tomiyasu
T
Shibata
Tomoyuki
T
Nakamura
Masakatsu
M
Wang
Fangyu
F
Yoshioka
Daisuke
D
Okubo
Masaaki
M
Maruyama
Naoko
N
Kamano
Toshiaki
T
Kamiya
Yoshio
Y
Nakamura
Masahiko
M
Fujita
Hiroshi
H
Nagasaka
Mitsuo
M
Iwata
Masami
M
Takahama
Kazuya
K
Watanabe
Makoto
M
Yamashita
Hiromi
H
Nakano
Hiroshi
H
Hirata
Ichiro
I
D044466:Asian People / Q000235:genetics; D016022:Case-Control Studies; D002766:Cholecystokinin / Q000235:genetics*; D005260:Female; D005838:Genotype; D006801:Humans; D007438:Introns; D007564:Japan; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D019518:Postprandial Period / Q000235:genetics*; D012737:Sex Factors
D002766:Cholecystokinin