Animals ; Cell Cycle Proteins ; biosynthesis ; genetics ; Cell Differentiation ; Cell Line, Tumor ; metabolism ; Gene Expression Regulation, Neoplastic ; drug effects ; Genes, Tumor Suppressor ; Humans ; Intracellular Signaling Peptides and Proteins ; Molecular Sequence Data ; Neoplasm Metastasis ; RNA, Messenger ; biosynthesis ; genetics ; Tretinoin ; pharmacology

2 000 mIU/ml,combined use of mifepristone(100 mg,twice daily,for 3 days) was employed. Results The treatment succeeded in 28 patients,with a success rate of 87.5%.Acute lower abdominal pain occurred in 4 patients and laparoscopic salpingectomies were carried out.The serum ?-hCG levels decreased by 23%~35% at 3 days after injection,by 38%~62% at 1 week,and to normal levels(≤6.1 mIU/ml) at 2~4 weeks.The mass completed subsided at 30～55 days after injection. Conclusions Transvaginal ultrasound guided methotrexate injection for the management of unruptured early tubal pregnancy is simple,safe, and effective.Further investigations should be carried out in respect of the recovery of tubal anatomy and physiological functions.

Objective To observe anti-sense phosphorothioate oligonucletide (ASPSODN) targeted directly to hTERT mRNA to its inhibiting effect on aimed gene and the influence on the telomerase activity, cellular proliferation, cell apoptosis of K562 cells. Methods Human leukemia cell line K562 was transfected with anti-sense oligonucleotide ASPSODN by liposome. The proliferation activity of K562 cell line was determined by using methyl thiazolyl tetrazolium assay, and telomerase activity was detected by TRAP-PCR-ELISA. Flow cytometry was adopted to examine apoptotic rate and cell cycle. RT-PCR was used to detect the expression of target gene hTERT mRNA. Results 0.6 μmol/L ASPSODN (0.42 ±0.16) was remarkably decreased the expression of hTERT mRNA, Telomerase relative activation was decreased by 52 %. According to 0.6 (μmol/L ASPSODN caused significant the inhibition of K562 cell growth. Apoptotic rate and cell cycle was examined by 0.6 μmol/L ASPSODN with flow cytometry. The cell apoptosis rate of 0.6μmol/L ASPSODN were 10.31 %. It showed the cells treated with 0.6 uU PSASODN arrested in G_1/C_0. The ratio of cells in G_2/M and S period was reduced. But there was no characteristic apoptosis peak. Conclusion ASPSODN targeted hTERT can inhibit the expression of target gene hTERT mRNA, and decrease the telomerase activity of K562 cells. ASPSODN can inhibit strongly the proliferation of K562 cell and induce cell apoptosis by decreasing telomerase activity.

Administration, Oral ; Adult ; Drug-Related Side Effects and Adverse Reactions ; nursing ; Female ; Humans ; Potassium Permanganate ; administration & dosage ; poisoning ; Powders

Animals ; DNA Methylation ; Epigenesis, Genetic ; Histones ; metabolism ; Humans ; Neoplasms ; genetics ; pathology ; Neoplastic Stem Cells ; metabolism ; pathology ; RNA, Untranslated

Objective To investigate the expression of PTPN13 in human gastric cancer and gastric cancer SGC-7901celllineanditsassociationwithproliferationandinvasion.Methods 106casesgastriccancertissuesamples and matched normal peritumorial tissues were collected .SGC-7901 cells were cultured and divided into two groups including pcDNA3.1-PTPN13 transfection group and without transfection group .Immunohistochemical technique was used to detecte protein expression of PTPN 13.The association of PTPN13 expression with tumor location , tumor size , depth of invasion and tumor metastasis were analyzed .The survival rate of patients with different PT-PN13 expression was calculated by Kaplan-Meier curves.CCK-8 assay was used to estimate the proliferation chan-ges.Using Trans-well assay analyzed the invasion of SGC-7901 cells.Moreover, Western blot was performed to de-tect the markers of EMT including E-cadherin, Snail and MMP9.Results Immunohistochemistry showed the expression rate of PTPN13 in gastric cancer tissues was lower than normal tissue (31 %vs 83%, P<0.05).The expression of PTPN13 in patients was related to with different tumor size , depth of invasion and tumor metastasis (P<0.05).The 2-year survival rate of patients with negative PTPN13 expression were lower.Overexpression reduced both proliferation and invasion in SGC-7901 cells.Up-regulated PTPN13 may increase E-cadherin level but decreases the level of Snail and MMP9 .Conclusions PTPN13 plays a role in gastric cancer tissue and cells as a tumor suppressor.Lower PTPN13 may predict a poor prognosis.PTPN13 may be used as therapy target in gastric cancer.

ObjectiveTo measure the changes of eye shape and axial length of the eyeball before and after removing the scleral encircling buckles. MethodsThis is a prospective and controlled study. Twenty eyes (20 patients) with rhegmatogenous retinal detachment and the fellow eyes were enrolled in this study.All patients underwent scleral encircling buckling, and the buckles were removed 2.0 - 3.5 years after the surgery. The eye shape and axial length of both eyes were measured by three-dimensional computed tomography (3D-CT) before and one, three, six months after the removing surgery. The axial length was also measured by intraocular lens (IOL)-Master. Results3D-CT showed that buckled eyeball depressed at the equator, resulting in a gourd-shaped eyeball.One month after removing the encircling buckle the depression disappeared.By 3D-CT scanning, the axial lengths of buckled eyes were (27.65 ± 1.22),(27. 3±1.56), (27. 29 ± 1.46) and (27. 12 ± 1.49) mm before and one, three, six months after the removing surgery respectively.The difference betweenbefore and after removing surgery was not statistically significant(t=2.89, P = 0.723). By IOL-Master, the axial length of operated eyes were (28. 32± 1.94), (28.17± 1.87), (28.21± 1.94), (28.25± 1.93) mm respectively.The difference between before and after removing the encircling band was not statistically significant (t = 3. 304, P =0.93). There was no significant difference in these two measuring modes (t= 3.705, P = 0.847).ConclusionsEncircling buckling can cause eyeball indentation, removing the encircling band can rescue the indentation. There are no changes in the axial length before and after removing the encircling buckles.

Objective To evaluate the efficacy of pregabalin combined with nerve block on postherpetic neuralgia (PHN). Methods 60patients were assigned into group A (n=30), who received pregabalin orally, and group B (n=30), who received nerve block (trigeminalnerve, intercostal nerve, lumbar nerve block) in addition. They were assessed with visual analogue scale (VAS) of pain, sleep score fromHamilton Rating Scale for Depression before and 3 d, 1 week, 2 weeks, 3 weeks, 4 weeks, 5 weeks, 6 weeks, 7 weeks, and 8 weeks aftertreatment. The incidence of pain decreased >50% and >30% were compared. Results The scores of VAS and sleep significantly reduced inboth groups 1~8 weeks after treatment (P<0.01), and decreased significantly 3 d after treatment in group B than in group A (P<0.05). The incidenceof pain decreased >50% and >30% were more in group B than in group A (P<0.05). Conclusion Nerve block combined with oralpregabalin is more effective on PHN.

Objective To discuss the imaging representations and its clinical significance of acute indigitation in infants.Methods The imaging representations including CT,ultrasonography stand abdominal plain film and gas clysters of indigitation comfirmed by operation in 58 infants were analysed.Results (1)Of 58 cases,33 were ileum-colon and ileum-caecal type,25 were ileum-ileum-colon,ilem-cecal-colon and ileum-colon-colon type;(2)The main imaging representations were as following:gas decreased in colon of small intestine (12 cases),inflation in intestine and incomplete ileus (18 cases),ileus of small intestine(17 cases),no abnormity on stand abdominal plain film (8 cases).Gas clyster showed the "goblet sign" and masses (28 cases).The sign of targed rings was seen on ultrasonography(3 cases).The layered homocentric round tumors showed by CT (1 case).Conclusion The imaging representations of acute indigitation in infants are typical,which are significant for the diagnosis.

Objective To select an efficient method to inhibit telomerase activity, antisenseoligodeoxynucleotide and plasmid-vector mediated RNAi against hTERT were used to inhibit telomerase activity. The inhibiting effects of the two methods were compared. Methods Against hTERT mRNA, siRNA and oligodeoxynucleotide were designed and transfected into K562 cells by liposome. Effective and specific siRNA strands were selected and then plasmid was constructed and transfected into K562 cells; followed by analysis of the results. Results hTERT mRNA were detected after the three chemo-synthesized strands were transfected. It was found that si-hTERT-1 and si-hTERT-2 were effective, but si-hTERT-3 had no effect. The inhibiting effect of hTERT mRNA lasted only 48 h and disappeared at 72 h. Two siRNA strands were sieved and plasmids were constructed and transfected into K562 cells. In the P-1 group, hTERT mRNA was 0.39±0.13 at 48 h, 0.57±0.32 at 72 h. In the P-2 group, hTERTmRNA was 0.55±0.20 at 48 h, 0.88±0.23 at 72 h.In the P-1 group, the relative telomerase activity was 0.42±0.07 at 48 h, 0.31±0.08 at 72 h. In the P-2 group was 0.49±0.27 at 48 h, 0.39±0.03 at 72 h. The best concentration of siRNA was 100 μmol/L. The best concentration of ASODN was 0.6 μ mol/L. hTERTmRNA was 0.42±0.16 at 24 h, 0.71±0.18 at 48 h. Relative telomerase activity was 0.52±0.002 at 24 h, 0.482±0.018 at 48 h. Conclusion Both ASODN and RNAi targeting hTERT can inhibit the expression of hTERT mRNA, and then inhibit telomerase activity. The inhibiting effect is closely relative to the targeting site. The inhibiting effect of RNAi is better than that of ASODN. RNAi has better efficiency and lasts for a longer time. Plasmid mediated RNAi has better inhibiting effect than the chemo-synthesized siRNA.