Background: Poor habits can worsen gastroesophageal reflux disease (GERD) and reduce treatment efficacy. Few large-scale studies have examined lifestyle influences, particularly eating habits, on GERD in China, and research related to eating quickly, hyperphagia, and eating hot foods is quite limited. The aim of this study was to evaluate the relationship between GERD pathogenesis and lifestyle factors to produce useful information for the development of a clinical reference guide through a national multicenter survey in China. Methods: Symptom and lifestyle/habit questionnaires included 19 items were designed. The questionnaire results were subjected to correlation analysis relative to GERD symptom onset. A standard proton pump inhibitor (PPI) was advised to correct patients with unhealthful lifestyle habits. Results: A total of 1518 subjects (832 GERD, 686 non-GERD) enrolled from six Chinese hospitals completed symptom and lifestyle/habit questionnaires. The top lifestyle factors related to GERD were fast eating, eating beyond fullness, and preference for spicy food. Univariate analysis showed that 21 factors, including male gender, a supra-normal body mass index (BMI), smoking, drinking alcohol, fast eating, eating beyond fullness, eating very hot foods, and drinking soup, among others, were associated with GERD ( p < 0.05). Logistic multivariate regression analysis revealed the following risk factors for GERD [with odds ratios (ORs)]: fast eating (4.058), eating beyond fullness (2.849), wearing girdles or corsets (2.187), eating very hot foods (1.811), high BMI (1.805), lying down soon after eating (1.544), and smoking (1.521). Adjuvant lifestyle interventions improved outcomes over medication alone ( z = –8.578, p < 0.001 Mann–Whitney rank sum test). Conclusions: Lifestyle interventions can improve medication efficacy in GERD patients. Numerous habits, including fast eating, eating beyond fullness, and eating very hot foods, were associated with GERD pathogenesis. The present results may be useful as a reference for preventive education and treatment.
A gene named GCRG213 was identified in human gastric adenocarcinoma. It encoded an APE-like protein which was probably a new member of the APE family. GCRG213 was over-expressed not only in gastric cancer, but also in its precancerous leisions. The role of GCRG213 expression in carcinogenesis needs further study.
A novel gene named GCRG224 was identified from human gastric mucosal tissue. It overexpressed in almost all gastric mucosal epithelium but only a small portion of cancer and precancerous leisions. The role of GCRG224 expression in gastric epithelium needs further study.
AIM:To analyze the expression profiles of a human gastriccancer-related gene, GCRG123 , in human gastric signetring cell carcinoma tissues, and to perform bioinformatics analysis on GCRG123 . METHODS:In situ hybridization was used to explore the GCRG123 expression pattern in paraffin-embedded gastric tissues, including 15 cases of signet-ring cell carcinoma, 15 of intestinal-type adenocarcinoma, and 15 of normal gastric mucosa. Northern blotting was used to analyze the differences in GCRG123 expression between stomach signet-ring cell carcinoma and intestinal-type adenocarcinoma tissues. Online software, including BLAST, Multalin and BLAT, were applied for bioinformatics analysis. National Center for Biotechnology Information (NCBI) and the University of California Santa Cruz (UCSC) databases were used for the analyses. RESULTS:The in situ hybridization signal appeared as blue precipitates restricted to the cytoplasm. Ten out of 15 cases of gastric signet ring cell carcinoma, normal gastric mucosal epithelium and pyloric glands showed high GCRG123 expression. Low GCRG123 expression was observed in gastric intestinal-type adenocarcinoma and normal gastric glands. Northern blotting revealed that GCRG123 was up-regulated in signet-ring cell carcinoma tissue but down-regulated in intestinal-type adenocarcinoma tissue. BLAST and Multalin analyses revealed that the GCRG123 sequence had 92% similarity with the ORF2 sequence of human long interspersed nuclear element retrotransposons (LINE-1, L1).BLAT analysis indicated that GCRG123 mapped to all chromosomes. GCRG123 was found to integrate in the intron-17 and -23 of Rb, 5' flanking region of IL-2 and clotting factor Ⅸ genes. LINE-1 family member GCRG123 gene is up-regulated in human gastric signet-ring cell carcinoma. World
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