miR-106b Promotes Metastasis of Early Gastric Cancer by Targeting ALEX1 in Vitro and in Vivo.

Background/aims: Aberrant expression of miR-106b is a specific symptom of many solid carcinomas. Overexpression of miR-106b has been observed in gastric cancer. The effect of miR-106b on gastric cancer has been investigated in different cell culture models.

G9A promotes gastric cancer metastasis by upregulating ITGB3 in a SET domain-independent manner.

Tumor metastasis is the leading cause of death in patients with advanced gastric cancer (GC). Limited therapeutic regimens are available for this condition, which is associated with a poor prognosis, and the mechanisms underlying tumor metastasis remain unclear. In the present study, increased histone methyltransferase G9A expression in GC tissues correlated with advanced stage and shorter overall survival, and in vitro and in vivo experiments revealed that G9A promoted tumor invasion and metastasis.

Biglycan stimulates VEGF expression in endothelial cells by activating the TLR signaling pathway.

Biglycan (BGN) is an important component of the extracellular matrix (ECM) that is implicated in a variety of human cancers. In our previous study, we reported that BGN was overexpressed in gastric cancer (GC) tissues and promoted cancer metastasis. Moreover, the tubular formation capacity in HUVECs was promoted by stimulation with culture media from BGN-overexpressing GC cells, but the exact underlying mechanism is still unknown.

REG4 promotes peritoneal metastasis of gastric cancer through GPR37.

Being the major reason of recurrence and death after surgery, peritoneal metastasis of gastric cancer dooms the prognosis of advanced gastric cancer patients. Regenerating islet-derived family, member 4 (REG4) is believed to promote peritoneal metastasis, however, its mechanism is still a moot point at present. In the present study, we show that high expression of REG4 correlates with advanced stage and poor survival prognosis for gastric cancer patients.

Mitochondrial aldehyde dehydrogenase 2 protects gastric mucosa cells against DNA damage caused by oxidative stress.

Mitochondrial aldehyde dehydrogenase 2 (ALDH2) is a member of the aldehyde dehydrogenase superfamily and is involved with the metabolic processing of aldehydes. ALDH2 plays a cytoprotective role by removing aldehydes produced during normal metabolism. We examined the cytoprotective role of ALDH2 specifically in gastric mucosa cells.

MicroRNA-17/20a inhibits glucocorticoid-induced osteoclast differentiation and function through targeting RANKL expression in osteoblast cells.

Glucocorticoids act on the osteoblasts to up-regulate the expression of RANKL, which is very important in the etiology of glucocorticoid-induced osteoclast differentiation and bone resorption. The mechanisms of this process are still not completely understood. Recent studies have shown that glucocorticoids mediate osteoblast function by decreasing the expression of microRNA-17-92a cluster.

Tumor suppressor miR-24 restrains gastric cancer progression by downregulating RegIV.

Background: microRNAs are small noncoding RNAs that modulate a variety of cellular processes by regulating multiple targets, which can promote or inhibit the development of malignant behaviors. Accumulating evidence suggests miR-24 plays important roles in human carcinogenesis. However, its precise biological role remains largely elusive.

Biglycan enhances gastric cancer invasion by activating FAK signaling pathway.

Biglycan (BGN) is an important member of small leucine-rich proteoglycans family, and has been implicated in oncogenesis and development of various human cancer types. Here we report that BGN promotes tumor invasion and metastasis of gastric cancer both in vitro and in vivo. BGN expression is significantly higher in gastric cancer tissues and associated with lymph node metastasis, depth of tumor invasion and TNM stage.

Serum proteomics for gastric cancer.

According to the World Health Organization, 800,000 cancer-related deaths are caused by gastric cancer each year globally, hence making it the second leading cause of cancer-related deaths in the world. Gastric cancer is often either asymptomatic or causing only nonspecific symptoms in its early stages. By the time the symptoms occur, the cancer has usually reached an advanced stage, which is one of the main reasons for its relatively poor prognosis.

Identification of novel serum biomarkers for gastric cancer by magnetic bead.

Early diagnosis and early treatment is known to improve prognosis for gastric cancer. Magnetic affinity beads can be used to extract peptides from un-fractionated serum samples. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) can detect the presence and the molecular mass of peptides.

[Evaluation of the gastrointestinal decompression after gastrectomy: a prospective randomized controlled trial].

Objective: To evaluate the value of using nasogastric tube for patients after gastrectomy.

Methods: One hundred and eight patients undergone gastrectomy were divided randomizely into nasogastric decompression group(n=53) and non-nasogastric decompression group (n=55). Gastrointestinal function and postoperative complications were compared between the two groups.

Is PET-CT suitable for predicting lymph node status for gastric cancer?

Background/aims: To verify the value of PET-CT for predicting lymph node status of gastric cancer preoperatively.

Methodology: 78 gastric cancer patients accepted PET-CT preoperatively, the results of lymph node status were compared with the postoperative pathology. CT was used as control.

[Clinical value of routine haematoxylin-eosin stain in diagnosing submucosal lymphatic vessel infiltration in early gastric cancer].

Objective: To evaluate the value of routine haematoxylin-eosin(HE) stain for submucosal lymphatic vessel infiltration in early gastric cancer.

Methods: Four thousand four hundred and twenty early gastric cancer patients underwent D2 operation. Submucosal lymphatic vessel was detected by routine HE stain.

[The results of surgical treatment for pseudomyxoma peritonei].

The surgical results of 37 patients with pseudomyxoma pertonei are reported. Twenty eight patients received laparotomy and complete cytoreduction (CC-0) could be done in 6 patients. However, 13 patients received incomplete cytoreduction, and 9 patients underwent drainage of ascites and peritoneal washing.

The diagnostic value of PET-CT for peritoneal dissemination of abdominal malignancies.

Aim: To evaluate the diagnostic value of PET-CT for predicting peritoneal metastasis of abdominal malignancies.

Methods: One hundred fifty four (154) cases of malignant tumor, including 141 cases of gastric cancer, 9 cases of colon cancer, 2 cases of ovary cancer, and 2 cases of pseudomyxoma, had accepted PET CT from Nov. 2002 to Jan.

[Clinical effect of intraoperative peritoneal hyperthermic chemotherapy for advanced gastric cancer].

Objective: To investigate the clinical effect of intraoperative peritoneal hyperthermic chemotherapy (IPHC) for advanced gastric cancer (AGC).

Methods: A total of 118 AGC patients with serosal invasion were enrolled in this study from 1998 to 2001. Among these cases, 96 patients without macroscopic peritoneal metastases were selected for prophylactic study, including 42 cases with IPHC and 54 cases without IPHC as control.