Changes in Clock Genes Expression in Esophagus in Rat Reflux Esophagitis

被引：10

作者：

Hashimoto, Atsushi ^{[1
]}

Uemura, Risa ^{[1
]}

Sawada, Akinari ^{[1
]}

Nadatani, Yuji ^{[1
]}

Otani, Koji ^{[1
]}

Hosomi, Shuhei ^{[1
]}

Nagami, Yasuaki ^{[1
]}

Tanaka, Fumio ^{[1
]}

Kamata, Noriko ^{[1
]}

Taira, Koichi ^{[1
]}

Yamagami, Hirokazu ^{[1
]}

Tanigawa, Tetsuya ^{[1
]}

Watanabe, Toshio ^{[1
]}

Fujiwara, Yasuhiro ^{[1
]}

机构：

[1] Osaka City Univ, Dept Gastroenterol, Grad Sch Med, Abeno Ku, 1-4-3 Asahimachi, Osaka 5458585, Japan

来源：

DIGESTIVE DISEASES AND SCIENCES | 2019年 / 64卷 / 08期

关键词：

Esophagus; GERD; Rat; Clock gene; Circadian rhythm; INFLAMMATORY-BOWEL-DISEASE; CIRCADIAN CLOCKS; SLEEP; ASSOCIATION; RHYTHMICITY; DISTURBANCE; MODULATE; BMAL1;

D O I：

10.1007/s10620-019-05546-1

中图分类号：

R57 [消化系及腹部疾病];

学科分类号：

摘要：

BackgroundGastroesophageal reflux disease (GERD) is strongly associated with sleep disturbances. Clock genes harmonize circadian rhythms by their periodic expression and regulate several physiological functions. However, the association between clock genes and GERD is still unknown.AimsWe investigated whether reflux esophagitis affects circadian variability of clock genes in the esophagus and other organs using a rat reflux esophagitis model.MethodsReflux esophagitis was induced in 7-week-old male Wistar rats. Sham-operated rats were used as controls. Rats were killed at 09:00 (light period) and 21:00 (dark period) 3days (acute phase) and 21days (chronic phase) after induction of esophagitis. The expression levels of clock gene mRNAs such as Per1, Per2, Per3, Cry1, Cry2, Arntl, and Clock in the esophagus were investigated by qPCR. Arntl expression was examined in stomach, small intestine, colon, and liver tissues. Serum melatonin and IL-6 levels were measured by ELISA.ResultsHistological examination of reflux esophagitis mainly revealed epithelial defects with marked inflammatory cell infiltration in the acute phase and mucosal thickening with basal cell hyperplasia in the chronic phase. Circadian variability of clock genes, except Cry1, was present in the normal esophagus and was completely disrupted in reflux esophagitis during the acute phase. The circadian variability of Per2, Per3, and Arntl returned to normal, but disruption of Per1, Cry2, and Clock was present in the chronic phase. Disruption of circadian variability of Arntl was observed in the esophagus, as well as in the stomach, small intestine, and liver tissues in reflux esophagitis during the acute phase. There were no significant differences in serum melatonin and IL-6 levels between control and reflux esophagitis animals in both acute and chronic phases.ConclusionsDisruption to circadian variability of clock genes may play a role in the pathogenesis of GERD.

引用

页码：2132 / 2139

页数：8

共 33 条

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