ObjectiveTo systematically review the complications and quality of life (QoL) in patients with esophageal cancer after esophagectomy using gastric tube. MethodsRandomized controlled trials (RCTs) about the postoperative complications and QoL of patients using gastric tube and the whole stomach reconstruction were electronically searched in PubMed, EMbase, The Cochrane Library, Web of Knowledge, CBM, CNKI, VIP and WanFang Data from inception to September 30th, 2013. Two reviewers independently screened literature according to the inclusion and exclusion criteria, extracted data, and assessed methodological quality. Then meta-analysis was performed using RevMan 5.2 software. ResultsA total of 10 RCTs involving 1 085 patients were included. The results of meta-analysis showed that, in terms of postoperative complications, the incidences of reflux esophagitis (OR=0.19, 95%CI 0.12 to 0.32, P < 0.000 01) and intrathoracic stomach syndrome (OR=0.11, 95%CI 0.04 to 0.32, P < 0.000 1) with gastric tube were significantly lower than those of the whole stomach; in terms of QoL, the scores of QoL in the 6th month (MD=18.71, 95%CI 7.72 to 29.71, P=0.000 9) and in the 12th month (MD=22.95, 95%CI 8.21 to 37.69, P=0.002) with gastric tube were significantly higher than those of the whole stomach. In terms of satisfaction degree of QoL, the satisfaction degree of QoL in the 6th month (OR=1.78, 95%CI 1.10 to 2.88, P=0.02) and the 12th month (OR=2.73, 95%CI 1.67 to 4.47, P < 0.000 1) with gastric tube were both significantly higher than those of the whole stomach. ConclusionCompared with the whole stomach reconstruction, the method of gastric tube reconstruction has beneficial effects in reducing the incidences of postoperative complications (such as reflux esophagitis, intrathoracic stomach syndrome) and improves patients' QoL. But there are many uncertain factors about postoperative anastomotic complication and its influence on patients' long-term QoL remains uncertain. Thus, further studies should be conducted.
ObjectiveTo explore the feasibility of organoid culture derived from the patients with gastric cancer by suspension culture. MethodsThe fresh gastric cancer tissues of the 3 patients with gastric cancer were selected, which were digested with mixed enzymes and then made into cell suspensions, and were inoculated into ultra-low attachment plates to culture organoid by suspension. When the organoid growth was dense, the passage and freezing were carried out. The formation process of organoid was observed under the inverted microscope (IM). Further the consistency between the organoid and primary gastric cancer tissue was evaluated by hematoxylin-eosin (HE) and immunohistochemical (IHC) staining. ResultsIn this study, an organoid that could be passaged and frozen was successfully established in one patient. The results under the IM showed that the organoid was initially spherical in shape (cultured on day 5), then gradually became short rod-shaped on day 10, showed a branching like change on day 15, and formed irregular glandular tubular structures on day 20. The structures between the organoids and primary gastric cancer tissues were highly similar by HE staining. The IHC staining results showed that the expressions of low molecular weight cytokeratin (CK-LMW), p53, and Ki67 in the organoid and its corresponding primary gastric cancer tissue were basically the same. That was, the CK-LMW and p53 expressions were positive in the organoid and primary gastric cancer tissue, and the Ki67 was highly expressed (with a positive rate of approximately 70%). ConclusionBased on the preliminary research results of this study, it suggests that the suspension culture can be used to establish organoid derived from patients with gastric cancer, which is in accordance with primary tumor tissue at the tissue and cellular levels.