Background and purpose: Unbalance of apoptosis regulation plays an important role in tumor initiation and progression. Survivin and caspase-3 all take part in the regulation of cell cycle and apoptosis. The expressions of survivin and caspase-3 were detected in the tissues of gastric cancer to explore their association with the carcinogenesis of gastric cancer. Methods: The expressions of survivin and caspase-3 in 79 cases of gastric cancer and 30 cases of adjacent were detected by using reverse-transcription PCR (RT-PCR) and immunohistochemistry. Results: The expressions of survivin mRNA and caspase-3 mRNA were significantly related with the depth of invasion, lymph-node metastasis and TNM stage (P<0.05). The expressions of survivin mRNA and caspase-3 mRNA had significantly differences in gastric cancer (P<0.01). Conclusion: Survivin and caspase-3 are both important factors that cause tumorigenesis of gastric cancer, while survivin may promote the progression of gastric cancer through inhibiting the expression of caspase-3.

Objective To study the curative effect of minimally invasive surgery in the treatment of rectal cancer.Methods 100 patients with rectal cancer were researched.They were randomly divided into observation group and control group,50 cases in each group.The control group received traditional abdominal radical operation,the observation group was treated with minimally invasive surgery.The operation effect was compared between the two groups.Results The operation time,length of stay and feeding time after operation in the observation group were shorter than those in the control group[(78.45±12.34)min vs.(98.24±25.31)min,(3.12±0.43)d vs.(7.53±1.12)d,(1.23±0.30)d vs.(3.56±0.57)d](t=4.967,25.992,25.578,all P<0.05).The amount of bleeding during operation of the observation group was less than that of the control group[(11.23±2.31)mL vs.(26.58±4.04)mL](t=23.323,P<0.05).The incidence rate of postoperative complications of the observation group was significantly lower than that of the control group[6.00%(3/40) vs.20.00%(10/50)](x2=4.332,P<0.05).After surgery,the quality of life in the observation group was higher than that in the control group[(57.82±6.84)points vs.(48.23±4.50)points](t=8.282,P<0.05).After 1 year of follow-up,there were no significant differences in metastasis rate,recurrence rate and survival rate between the two groups[2.00%(1/50) vs.6.00%(3/50),0.00%(0/50) vs.4.00%(2/50),98.00%(49/50) vs.92.00%(46/50)](x2=1.042,2.041,1.895,all P>0.05).Conclusion The effect of minimally invasive surgery for patients with rectal cancer is significant,it is worthy of promoting.

Objective To explore the clinical significance of integrated screening of RET in a Chinese multiple endocrine neoplasia type 2A(MEN 2A)family and to evaluate the feasibility and effectiveness of prophy-lactic total thyroidectomy to MEN 2A-related medullary thyroid carcinoma ( MTC).Methods Medical history was obtained from 10 family members in a 3-generation south China family .Systemic investigations including bio-chemical tests, imaging examinations and germline RET screening were performed .3 asymptomatic mutation car-riers underwent prophylactic total thyroidectomy .Results RET screening showed a heterozygous missense muta-tion of TGC to CGC at codon 634 on exon 11 in 6 members(p.C634R), which was completely consistent with the clinical manifestations.There were 4 males and 2 females.The initial mean diagnostic age of 33.5 years(ranging from 19 years to 65 years) and the mean maximum diameter of MTC was 2.3 cm(ranging from 0.7 cm to 5.2 cm). Among them 3 members had palpable neck masses (1 case with diarrhea).Right total thyroidectomy +right level Ⅵlymph-node dissection with modified right neck dissection in one case , and bilateral total thyroidectomy +bilat-eral level Ⅵlymph-node dissection in 2 were performed .In other 3 asymptomatic mutation carriers , prophylactic total thyroidectomy +bilateral level Ⅵ lymph-node dissection were also performed .Among them, 1 case of a-symptomatic pheochromocytom ( PHEO) underwent cortical-sparing adrenalectomy before MTC .After the first op-eration, 4 patients still presented a high value of calcitonin , among whom 1 patient( T3N 1bM 0-1) underwent re-operation for 3 times after the initial operation and presented metastasis to bone after 130 months, taking vandet-anib orally up to now;2 patients underwent reoperation at 6 and 7 months after initial operation respectively (T1N 1bM0 and T2N 1bM0), and the other one patient was closely monitored and followed up for 22 months(T2N 1b M0).Moreover, The calcitonin levels dropped to normal in the other 2 asymptomatic cases(T1N0M0) who were followed up for 20 months.Conclusions Pedigree screening can work up an early diagnosis and improve the prognosis of MEN 2A.Integrated screening of RET and pre-operative calcitonin level measurement and prophylac-tic thyroidectomy for asymptomatic RET mutation carriers are reasonable and effective .

Objective To analyze the changes of serum fatty acid synthase (FAS),carcinoembryonic antigen (CEA) and carbohydrate antigen 72-4 (CA72-4) in patients with gastric cancer and its clinical diagnostic value.Methods Forty five patients with gastric cancer and 45 patients with benign gastric cancer treated in our hospital from January 2016 to December 2016 were enrolled in this study.Forty five healthy subjects were enrolled in this study.The levels of FAS,CEA,and CA72-4 in three groups were analyzed.Results The levels of FAS,CEA,and CA72-4 in patients with gasttric cancer [(12.73 ± 5.48) mg/L,(31.36 ± 14.51) ng/ml,and (39.32 ± 18.76) U/ml] were significantly higher than those in benign gastric cancer group [(2.26 ± 1.15) ng/L,(3.24 ± 1.47) ng/ml,and (3.75 ± 1.69) U/ml],and normal control group [(1.83 ± 0.92) mg/L,(2.71 ± 1.54) ng/ml,and (3.13 ± 1.82) U/ml] (P ＜ 0.05).FAS,CEA,and CA72-4 levels in patients with lymph node metastasis of gastric cancer [(13.58 ± 6.09) mg/L,(6.25 ± 11.54) ng/ml,and (41.31 ± 13.67) U/ml] were significantly higher than those without lymph node metastasis [(9.21 ± 5.42) mg/L,(28.38 ± 9.72) ng/ml,and (26.75 ± 11.86) U/ml] (P ＜ 0.05).The sensitivity of FAS,CEA,and CA72-4 in patients with gastric cancer was significantly lower than that in combined detection,the specificity of FAS,CEA,and CA72-4 in patients with gastric cancer was significantly higher than that in combination test (P ＜ 0.05).The sensitivity of FAS,CEA,and CA72-4 in patients with lymph node metastasis was significantly lower than that in combination test,and the specificity of FAS,CEA and CA72-4 was significantly higher than that of combined detection (P ＜ 0.05).Conclusions FAS,CEA,and CA72-4 can be used as indicators of gastric cancer and diagnosis of lymph node metastasis.Combined detection of three indexes can improve the diagnostic sensitivity and have good clinical significance.

OBJECTIVETo explore the clinical characteristics and significance of RET proto-oncogene screening in multiple endocrine neoplasia type 2A (MEN2A).

METHODSComprehensive medical history was obtained for 5 members from a 3-generation family from southern China. Clinical investigations have included biochemical testing, imaging, and screening of germline RET proto-oncogene mutations.

RESULTSGenetic screening has revealed a missense mutation at codon 618(TGC>CGC) of exon 10 in 3 patients(p.C618R), which was consistent with their clinical manifestations. For the 3 individuals, the age at diagnosis was 21, 26 and 36 yr, and the maximum diameter of medullary thyroid carcinoma was 22, 25 and 39 cm, respectively. The 36-year-old female patient initially underwent right total thyroidectomy plus right neck lymph node dissection. Four years later, she again underwent left adrenal tumorectomy and left total thyroidectomy plus left neck lymph node dissection. The 21-year-old male patient underwent right total thyroidectomy plus right modified neck dissection. The follow-up was respectively 146 and 26 months following the initial operation. Two patients still presented elevated calcitonin and had bilateral neck lymph node masses and/or left thyroid masses on imaging examination. The 26-year-old female patient, who presented bilateral thyroid masses and elevated calcitonin, has refused thyroidectomy.

CONCLUSIONCombined family survey and RET gene screening can facilitate early diagnosis and surgical treatment to improve the prognosis.

Adult ; Asian Continental Ancestry Group ; genetics ; Base Sequence ; Carcinoma, Neuroendocrine ; Exons ; Female ; Humans ; Male ; Molecular Sequence Data ; Multiple Endocrine Neoplasia Type 2a ; enzymology ; genetics ; Mutation, Missense ; Pedigree ; Proto-Oncogene Proteins c-ret ; genetics ; Thyroid Neoplasms ; enzymology ; genetics ; Young Adult

To investigate the effect of a novel EZH2 inhibitor GSK126 on cell growth, apoptosis and migration of prostate cancer cells.Prostate cancer PC-3 and DU145 cells were treated with GSK126 at different doses. Cell growth was detected by sulforhodamine assay. Cell apoptosis was assayed by Annexin V-/PI kit. Transwell chamber and wound healing assays were conducted to detect cell migration. The mRNA level was detected by quantitative PCR, and protein expression was detected by Western blot analysis.GSK126 showed significant effect on cell growth and apoptosis when the dose was higher than 50 μmol/L. Wound healing assay revealed that scratch space in PC-3 cells was significantly increased in a dose-dependent manner in GSK126-treated groups[(247.2±24.4),(347.2±19.2) and (410.5±18.1) μm in low, medium and high dose (5.0, 20.0, 50.0 μmol/L), respectively] as compared with the control group[(171.3±17.8) μm](all<0.05). Transwell assay showed that migrated PC-3 cells in control group was 322.0±17.9,while those in GSK126-treated groups were 198.3±15.4 (low),82.7±6.2 (medium) and 30.2±4.1 (high), and the differences between the control group and GSK126-treated groups were significant(all<0.05). In addition, GSK126 up-regulated E-cadherin mRNA expression and down-regulated N-cadherin and Vimentin mRNA expression, whereas had no significant effect on Snail, Fibronectin and VEGF-A mRNA expression. The protein expression of E-cadherin was elevated but VEGF-A protein did not change in GSK126-treated groups. Similar results were exhibited in DU145 cell.GSK126 can significantly inhibit cell migration and invasion in prostate cancer PC-3 and DU145 cells, which may be resulted from its effect on epithelial-mesenchymal transition. GSK126 may be used as a potential anti-prostate cancer dug in clinic.
Apoptosis ; drug effects ; Cadherins ; analysis ; drug effects ; metabolism ; Cell Line, Tumor ; drug effects ; Cell Movement ; drug effects ; Cell Proliferation ; drug effects ; Down-Regulation ; drug effects ; Drug Screening Assays, Antitumor ; methods ; Enhancer of Zeste Homolog 2 Protein ; analysis ; drug effects ; metabolism ; Fibronectins ; analysis ; drug effects ; metabolism ; Humans ; Indoles ; pharmacology ; Male ; Prostatic Neoplasms ; chemistry ; genetics ; physiopathology ; Pyridones ; pharmacology ; RNA, Messenger ; Up-Regulation ; drug effects ; Vascular Endothelial Growth Factor A ; analysis ; drug effects ; Vimentin ; analysis ; drug effects ; metabolism