Objective To study the inhibitory effect of curcumin on the proliferation,migration and invasion of non-small cell lung cancer cell A549,and to discuss further if it is closely related to the expression of c-Jun N-terminal kinase (JNK) and relative protein p38.Methods A549 cells were cultured by conventional method,and then treated with different concentration of curcumin (10,20,40,80 μmol · L-1).The proliferation,migration and invasion of A549 cells were measured by real-time cellular analysis (RTCA).The expression levels of JNK,p-JNK,p38 and P-p38 were detected by real-time PCR and Western blotting.Results Curcumin showed an antiproliferation effect against A549 cells with IC50 =40 μmol · L-1,and curcumin exhibited obviously inhibitory effect on the migration and invasion of A549 cells.Additionally,compared with control group,curcumin suppressed the expression of JNK and p38 at the gene level,and significantly inhibited the expression of JNK,P-JNK,p38 and p38 (P＜0.05) at the protein level.Conclusion These results demonstrated that curcumin can inhibit the proliferation,migration and invasion of A549 cells via reducing the level of JNK,p38 phosphorylation,and blocking JNK signal transduction pathway.

Colorectal cancer (CRC) is the second most common cause of cancer-related death worldwide, and its high rates of relapse and metastasis are associated with a poor prognosis. Despite extensive research, the underlying regulatory mechanisms of CRC remain unclear. Long noncoding RNAs (lncRNAs) are a major type of noncoding RNAs that have received increasing attention in the past few years, and studies have shown that they play a role in many biological processes in CRC. Here, we summarize recent studies on lncRNAs associated with CRC and the signaling pathways and mechanisms underlying this association. We show that dysregulated lncRNAs may be new prognostic and diagnostic biomarkers or therapeutic targets for clinical application. This review contributes not only to our understanding of CRC, but also suggests novel signaling pathways associated with lncRNAs that can be targeted to block or eradicate CRC.
Biological Processes ; Biomarkers ; Colon ; Colonic Neoplasms ; Colorectal Neoplasms ; Neoplasm Metastasis ; Prognosis ; Recurrence ; RNA, Long Noncoding ; RNA, Untranslated

Intraoperative hemorrhage is the most common complication of laparoscopic radical gastrectomy,which is also the main cause of conversion to open surgery.With the popularization of laparoscopic surgery technology worldwide,how to complete high-quality surgery and effectively avoid intraoperative or postoperative complications is the goal pursued by all surgeons.Intraoperative hemorrhage in the laparoscopic radical gastrectomy is mainly divided into parenchymal hemorrhage,perigastric vascular injury-induced hemorrhage,lymph node hemorrhage and anastomotic bleeding.Compression,electrocoagulation,vascular clipping and vascular suture repair are the most common treatments for intraoperative hemorrhage.It is necessary to use above methods in clinical work.Proficiency in laparoscopic operation skills,familiarity with perigastric vascular anatomy and variation,and improved teamwork to reduce complications are the key to laparoscopic surgery for gastric cancer.Combined with literature reports,the authors summarize experience in laparoscopic surgery for gastric cancer,discuss the prevention and treatment of hemorrhagic complications during laparoscopic radical gastrectomy.

Objective To explore the clinical efficacy of modified totally laparoscopic intra-gastric surgery for the treatment of submucosal tumors adjacent to the cardia or pylorus.Methods The retrospective crosssectional study was conducted.The clinicopathological data of 48 patients with gastric submucosal tumors adjacent to the cardia or pylorus between September 2014 and March 2018 were collected.There were 22 males and 26 females,aged from 38 to 78 years,with an average age of 58 years.Patients were performed multi-port or singleport modified laparoscopic intra-gastric surgery.Observation indicators:(1) surgical treatments;(2) postoperative recovery;(3) results of postoperative pathological examination;(4) follow-up.Patients were followed up by outpatient examination and telephone interview to detect the postoperative complications and tumor metastasis and recurrence up to June 2018.Measurement data with normal distribution were expressed as Mean±SD and measurement data with skewed distribution were described as M (range).Count data were represented as absolute number or percentage.Results (1) Surgical treatments:48 patients underwent modified totally laparoscopic intra-gastric surgery successfully,including one patient combined with proximal gastrectomy,without conversion to open surgery.Of the 48 patients,43 underwent multi-port modified laparoscopic intra-gastric surgery and 5 underwent single-port modified laparoscopic intra-gastric surgery.The operation time and volume of intraoperative blood loss were 68 minutes (range,45-110 minutes) and 20 mL (range,5-100 mL).The oncologic evaluation of 48 patients:48 patients had complete resection of tumors,without tumor rupture.The tumor diameter and distance from margin to tumor were 32 mm (range,20-40 mm) and 6 mm (range,5-10 mm).(2) Postoperative recovery:the time for initial oral intake and duration of postoperative stay were 2.8 days (rang,1.0-5.0 days) and 5.3 days(range,3.0-11.0 days).There were 4,3,1 and 1 patients complicated with surgical infection,delayed gastric emptying,sub-phrenic hydrops and digestive leakage respectively in the 48 patients.(3) Results of postoperative pathological examination:the distance from tumor margin to gastric cardia or pylorus,tumor diameter,circumferential resection margin were 15 mm (range,0-30 mm),24 mm (range,10-65 mm),6 mm (range,5-10 mm),respectively.Growth patterns of cancer in the 48 patents included 27 of intraluminal type,12 of intermural type,9 of mixed type.Pathological types of 48 patients:there were 26 patients with leiomyoma,9 with gastrointestinal stromal tumor,4 with other rare tumors,2 with carcinoid,2 with mucosa associated lymphoma,2 with inflammatory fibrous polyps,2 with gastritis cystica profunda,1 with ectopic pancreas.(4) Follow-up:41 of the 48 patients were followed up for 3-48 months,with a median follow-up time of 22 months.No tumor recurrence was detected in 37 of 41 patients by 3 times of gastroscopy and no stenosis or dysfunction of cardia or pylorus was detected in 39 patients by 2 times of upper gastrointestinal imaging (one patient undergoing two examinations).During the follow-up,there was no surgery-related complication or tumorspecific death.Conclusion Modified totally laparoscopic intra-gastric surgery is safe and feasible for the treatment of gastric submucosal tumors adjacent to the cardia or pylorus.

Objective To investigate the influence of curcumin and its analogue H8 on glucose and lipid metabolism disorder in db/db mice. Methods The type 2 diabetes mouse model (db/db mice) was intragastrically administrated with curcumin and analogue H8 for 8 weeks.The blood biochemical indexes were measured.The expression of PEPCK and G6Pase mRNA was detected by real-time PCR in liver tissues.The expression of PEPCK and G6Pase protein was detected by Western blotting. Results Curcumin analogue H8 reduced blood glucose and lipids in db/db mice (P<0.01) and improved liver function related enzymes significantly.The levels of PEPCK and G6Pase mRNA in db/db mice were significantly decreased (P<0.01) and the expression levels of PEPCK and G6Pase protein were significantly decreased(P<0.01). Conclusion Curcumin analogue H8 improves the glucose and lipid metabolism disorder in db/db mice,and it is related to inhibiting the expression of PEPCK and G6Pase gene and protein.