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OBJECTIVE: Many studies have revealed that long non-coding RNAs (lncRNAs) are related to various cancers, including colorectal cancer (CRC). This study aims to explore the biological function of lncRNA PSMA3-AS1 in CRC progression. MATERIALS AND METHODS: The expression levels of PSMA3-AS1 and miR-4429 were assessed by RT-qPCR. CRC progression was explored by cell viability, migration, and invasion using CCK-8 and transwell assays. The interaction between PSMA3-AS1 and miR-4429 was verified by bioinformatics analysis, Dual-Luciferase assay, and RIP assay. RESULTS: It was found that PSMA3-AS1 expression was increased and miR-4429 expression was decreased in CRC tissues and cells. In addition, PSMA3-AS1 interference markedly hindered the proliferation, migration, and invasion of CRC cells. MiR-4429 was a direct target of PSMA3-AS1, and the knockdown of PSMA3- AS1 significantly suppressed miR-4429 expression. The depletion of PSMA3-AS1 inhibited CRC progression, which was neutralized by miR-4429 inhibitor. CONCLUSIONS: PSMA3-AS1 accelerated CRC progression by regulating miR-4429 expression, which could be used as a potential therapeutic target for CRC patients. [ABSTRACT FROM AUTHOR]

AIM: To evaluate the value of Lugol's iodine solution staining combined with endoscope on the diagnosis of non-erosive reflux disease (NERD). PATIENTS AND METHODS: A total of 96 gastroesophageal reflux disease patients were selected to participate in this study. The patients were stained on esophageal mucosa by Lugol's iodine solution and examined at routine endoscopy. The shallow staining and/or non-staining group patients were treated with esomeprazole and mosapride citrate, and then the changes in Lugol's iodine staining, Gerd Q (Gerd questionnaire) scoring and histological characters of esophageal mucosa were recorded before and after treatment. RESULTS: As the results, a total of 68 patients were diagnosed as NERD, and 36 of 68 patients were observed with uniform staining and 32 of 68 patients were observed with shallow staining and/or non-staining. After 4 weeks for treatment, 28 of 32 patients with shallow staining and/or non-staining became uniform staining and 4 of 32 patients were still with shallow staining and/or non-staining. Before and after treatment, the Gerd Q scoring of uniform staining groups and shallow staining and/or non-staining groups all had a significant difference (p < 0.05). Compared to the routine endoscopy, the detection rate of abnormal esophageal mucosa was significantly increased by Lugol's iodine solution staining combined with endoscope. CONCLUSIONS: Lugol's iodine solution staining combined with routine endoscopy, Gerd Q scoring and histomorphology can be used to evaluate the diagnosis and therapeutic effect of NERD. [ABSTRACT FROM AUTHOR]