G-protein signaling modulator 2 is a member of the GPSM family, with emerging significance in various diseases including Chadley-McCullough syndrome, rheumatoid arthritis, and systemic lupus erythematosus. Furthermore, its involvement extends to tumor pathogenesis, encompassing non-small-cell lung cancer, breast cancer, hepatocellular carcinoma, pancreatic carcinoma, serous ovarian cancer, Ewing's sarcoma, and osteosarcoma, influencing proliferation, invasion, and metastasis. There is no relevant review on the mechanism of GPSM2 in tumor progression. This paper will summarize the research progress on GPSM2 in tumors in recent years, focusing on its role and mechanism, with the aim of providing references and guidance for further research.

Objective To investigate the effects of long non-coding RNA (lncRNA) taurine up-regulated gene 1 (TUG1) on the proliferation, migration, and angiogenesis of gastric cancer cells. Methods The expression levels of LncRNA TUG1 in gastric cancer tissues and adjacent non-cancerous tissues were analyzed based on public databases. The expression of lncRNA TUG1 in gastric cancer cell lines was detected by real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR). SGC-7901 gastric cancer cells were transfected with si-TUG1 and si-NC, and the effects of knocking down lncRNA TUG1 on cell proliferation, colony formation, migration, and angiogenesis were analyzed using the Cell Counting Kit-8 (CCK-8) assay, colony formation assay, Transwell assay, and Matrigel tube formation assay. The correlation between alkB homolog 5 (ALKBH5) gene and lncRNA TUG1 was analyzed based on public databases. The regulatory relationship between ALKBH5 and lncRNA TUG1 was verified using Actinomycin D experiments. The effects of knocking down ALKBH5 on the proliferation, colony formation, migration, and angiogenesis of gastric cancer cells were analyzed through cell function experiments. Results LncRNA TUG1 was up-regulated in gastric cancer tissues and cell lines. After knocking down lncRNA TUG1, the proliferation, colony formation, migration, and angiogenesis abilities of SGC-7901 cells were lower than those of control cells(P < 0.05). Database analysis results showed that ALKBH5 was positively correlated with lncRNA TUG1 expression in gastric cancer (r=0.37, P < 0.05). Compared with control cells, the RNA stability of lncRNA TUG1 in SGC-7901 cells with knocked-down ALKBH5 decreased, and the cell proliferation, colony formation, migration, and angiogenesis abilities were also reduced (P < 0.05). Conclusion ALKBH5 promotes the proliferation, colony formation, migration, and angiogenesis of gastric cancer cells by inducing the expression of lncRNA TUG1.

Early postoperative inflammatory small bowel obstruction is one of the complications after abdominal surgery. Most obstructions will resolve on their own after nutritional support. However, the recovery of intestinal function takes a long time, which leads to high costs and is prone to occur related complications. Early postoperative inflammatory small bowel obstruction is also one of the risk factors for secondary adhesive intestinal obstruction. A few patients with ineffective conservative treatment have to undergo high-risk surgical treatment. Cases of early postoperative inflammatory small bowel obstruction complicated by superior mesenteric artery syndrome are relatively rare. Comprehensive treatment including acupuncture, hormones, and water-soluble contrast agents as well as early placement of enteral nutrition tubes is the key to the treatment of such patients.

Objective:To evaluate the role of permanent sigmoid colostomy created through the extraperitoneal route combined with pelvic floor peritoneal reconstruction after laparoscopic Miles surgery for lower rectal cancer.Methods:A total of 88 patients undergoing laparoscopic Miles surgery at Gastrointestinal Center of Northern Jiangsu People's Hospital from Apr 2016 to Apr 2020 were divided into extraperitoneal ostomy group(40 cases) and transperitoneal ostomy group (48 cases).Results:There were no significant differences in operating time, stoma-forming time, intraoperative blood loss, first exhausting time, first defecation time and hospital stay between the two groups (all P>0.05). There were 17 cases of complications in observation group vs. 16 cases in control group ( χ2=0.782， P=0.376). After 12 months, the complications in observation group were significantly less than control group ( χ2=8.601， P=0.003). There was no parastoma hernia in observation group vs.7 in control group ( χ2=4.502， P=0.034). The satisfaction rate of ostomy control defecation in observation group (70%) was significantly higher than that in control group (38%) after 12 months ( P=0.001). Conclusion:A permanent sigmoid colostomy created through the extraperitoneal route combined with pelvic floor peritoneal reconstruction during laparoscopic Miles surgery is safe and feasible, with fewer complications and better defecation function than that of the stoma through transperitoneal approach.

Objective:To explore the clinical value of laparoscopic abdominoperineal resection(LAPR) with pelvic peritoneum closure for patients with low rectal cancer.Methods:The clinicopathological data of 90 patients with low rectal cancer who underwent laparoscopic abdominoperineal resection from Mar 2014 to Jan 2019 at the Subei People's Hospital of Jiangsu Province were retrospectively analyzed. These patients were divided into closed pelvic floor peritoneum group (study group, n=42) and without pelvic floor peritoneum group (control group, n=48) . Results:The postoperative hospital stay of the study group was shorter than that of the control group[(10.8±3.0) d vs. (12.4±3.1) d, t=2.569, P=0.013]. There was no statistically significant difference in the operation time , intraoperative blood loss , time to first flatus ,first time of getting out of bed between the two groups. Perineal incision infection and perineal incision dehiscence occurred in 2 cases and 1 case in the study group, and 10 cases and 9 cases in the control group respectively (χ 2= 5.007, P=0.025; χ 2=6.077, P=0.033). In the study group, there were 0 cases of perineal hernia, 1 case of pelvic floor peritoneal hernia and 2 cases of adhesive intestinal obstruction, while those in the control group were 7 cases, 8 cases and 9 cases, respectively (χ 2=6.642, P=0.013; χ 2=5.079, P=0.033; χ 2=4.085, P=0.043). Conclusion:Laparoscopic abdominoperineal resection with pelvic peritoneum closure significantly reduces the incidence of postoperative perineal-related complications and shorten postoperative hospital stay.

Objective:To evaluate the safety and feasibility of laparoscopic selective lateral lymph node dissection (LLND) for radical resection of rectal cancer.Methods:From Dec 2018 to Jul 2020, at the Department of Gastrointestinal Surgery of Northern Jiangsu People's Hospital laparoscopic radical resection of rectal cancer was performed in 32 cases and radical resection plus selective LLND in 26 cases.Results:The operation time in the LLND group was significantly longer than that in the simple radical resection group [247(179-405) min vs. 146(118-258) min, Z=-5.169, P<0.001], but there was no significant difference in intraoperative bleeding [68(45-500) ml vs. 56(25-500) ml, Z=-1.598, P=0.110], postoperative ventilation time [2.5(1-6) d vs. 3.0(1-6) d, Z=-0.120, P=0.905], postoperative hospital stay [9.0(7-17) d vs. 9.5(6-14) d, Z=-1.050, P=0.294] and hospitalization costs [(49 000±3 000) RMB vs. (48 000±3 000) RMB, t=-1.072, P=0.289] between the two groups. The incidence of postoperative complications in the two groups was 19% and 27% respectively (χ 2=0.551, P=0.458). The number of lateral lymph node dissection in LLND group was 8(6-16), 5 of 26 patients had lateral lymph node metastasis, with a metastasis rate of 19%. Conclusion:Laparoscopic radical resectim plus selective LLND for rectal cancer harvests more lateral lymph node metastasis without causing higher complications .

Objective:To compare laparoscopic-assisted distal gastrectomy (LADG) and laparoscopy-assisted pylorus-preserving gastrectomy (LAPPG) for early gastric cancer (EGC). Methods:Firty-two EGC patients from Sep 2018 to Aug 2020 in Northern Jiangsu People's Hospital were divided into LAPPG group ( n=21) and LADG group ( n=31). Results:The average operation time in the LAPPG and LADG groups was (173±30) min and (144±31)min, respectively ( t=3.34, P=0.002). The average levels of Hb and albumin (ALB) in the LAPPG group were (128.7±16.0) g/L and (41.2±4.8) g/L respectively 3 months after gastrectomy, ( t=2.482, P=0.016 and t=2.097, P=0.041) compared to LADG group at (118.2±14.1) g/L, (38.4±4.7) g/L. According to the Clavien-Dindo classification, the incidence of complications above grade Ⅱ was 19.0% in LAPPG group and 22.6% in LADG group, and the difference was not statistically significant ( χ2=0.007, P=0.934). The PGSAS-45 questionnaire scoring results show that LAPPG scores were lower in the dumping syndrome and life dissatisfaction subscales ( t=-2.706, P=0.008 and t=-2.893, P=0.004) Conclusion:LAPPG procedure for the treatment of EGC patients is safe and feasible, promoting early postoperative nutritional recovery. In adition to less dumping syndrome and better postoperative quality of life .

Objective: To analyze the effect and adverse reactions of radiotherapy in patients with primary orbital lymphoma. Methods: A total of 28 patients with primary orbital lymphoma from Tianjin Union Medical Center, the First Central Hospital of Tianjin and Tianjin Dagang Oil Company Hospital between March 2006 and August 2012 were retrospectively analyzed. All the patients received orbital tumor dissection or biopsy, then received radiation therapy. Three patients received chemotherapy with CHOP protocol before radiotherapy. Radiotherapy was delivered routinely with 3D-conformal radiation therapy (CRT) technique with daily 2-2.5 Gy for 5 times per week and 3-5 fields. Total dosage was 20-50 Gy. There were 18 cases of 30 Gy, 1 case of 22 Gy, 1 case of 25 Gy, 1 case of 20 Gy, 1 case of 28.8 Gy, 3 cases of 40 Gy, 1 case of 42 Gy, 1 case of 46 Gy and 1 case of 50 Gy. Results: All the patients had complete remission (CR) after radiotherapy during follow-up. One patient recurred after radiotherapy of 4 months and received CR with radiotherapy again. One patient died of lung infiltration. Acute complications during radiotherapy were conjunctivitis (28 cases, 100.0%) and keratitis (1 case, 3.6%), long-term complications with ophthalmoxerosis (10 cases, 35.7%) and decreased visual acuity (1 case, 3.6%). Conclusion Radiotherapy is an effective method for primary orbital lymphoma, and the adverse reactions can be tolerated for most patients.

Objective To compare the early outcomes of laparoscopic and open resection and evaluate the safety and feasibility of laparoscopic surgery in patients with colorectal cancer aged ≥ 70 years.Methods A total of 91 consecutive patients with colorectal adenocarcinoma underwent surgery in Yizheng City People's Hospital between Jan.2009 and Dec.2015.In 91 patients included in this study,38 received laparoscopic surgery and 53 underwent open surgery.Main outcome measures were clinical data,postoperative recovery status and short-term outcomes.Results There were no significant differences between two groups with respect to demographic indicators,clinicopathological results and chronic comorbidities had no significant difference between two groups.No death cases occured in both groups.One patient in the laparoscopic group required conversion to open surgery due to ureteral injury.Laparoscopic surgery was associated with significantly longer operating time [(238 ± 71.3) minutes vs (175 ± 60.8) minutes,P ＜ 0.001],less estimated blood loss [(145 ± 58 ml) vs (186 ± 45) ml,P ＜ 0.001)],a shorter postoperative hospital stay [(11.9 ± 3.9) days vs (14.5 ± 3.7) days],lower overall postoperative complication rate (23.7％ vs 45.3％,P =0.035),wound-related complication rate (2.6％ vs 22.6％,P =0.017) when compared with open surgery.Quality of surgical specimen,lymph nodes harvested were not significantly different between two groups.Conclusion Laparoscopic colorectal cancer surgery is safe and feasible in elderly patients,associated with better short-term outcomes when compared with open surgery.