Objective:To study the significance of detection o f lymph node micrometastas is by immunohistochemical method with monoclonal anti-karatin antibody in patie nts with colorectal cancer.Methods:We examined 331 lymph nodes obtai ned from 47 colo rectal cancer patients who underwent a curative operation and diagosed by using immunohistochemistry SB techniques.Monoclonal mouse anti-keratin antibodies (AE1,AE1/AE3,AE3)were used as the primary reagents to identify tumor cells both in tumor tissues and lymph nodes.Results:A total of 36 micrometa stasis among 331 lymph nodes(11.9%) were found.Duke's C staging patients had more lymph nodes m etastasis than that in Duke's B staging patients(P＜0.05).Postoperative fol low-up revealed that recurrence rate was high and the latent period of distant metastasis was much shorter in patients with occult mirometastasis th an those without.Conclusions:Even in histologically negative lym ph nodes,there i s a considerable possibility that micrometastasis may exist.The immunohistochemical detection of monoclonal anti-keratin antibody can explica te clinical staging a nd as an indication for colorectal cancer therapy.

Objective:To study the significance of detection of lymph node micrometastasis by immunohistochemical method with monoclonal anti-karatin antibody in patients with colorectal cancer.Methods:We examined 331 lymph nodes obtained from 47 colorectal cancer patients who underwent a curative operation and diagosed by using immunohistochemistry SB techniques.Monoclonal mouse anti-keratin antibodies(AE1,AE1/AE3,AE3)were used as the primary reagents to identify tumor cells both in tumor tissues and lymph nodes.Results:A total of 36 micrometastasis among 331 lymph nodes(11 9%) were found.Duke's C staging patients had more lymph nodes metastasis than that in Duke's B staging patients(P

Objective This study was to explore the inhibitory effect of shRNA-VEGF - C on growth of human colon cancer cell line Lovo in vitro and vivo. Methods Recombinant VEGF-C short hairpin RNA (shRNA) plasmid was constructed and transfected into Lovo cells. The expression of VEGF-C was detected at mRNA and protein levels by real-time reverse transcription-polymerase chain reaction (RT-PCR). In vivo study, xenograft tumors were established by injecting LOVO cells into nude mice, then shR-NA-VEGF-C were injected into the tumors, the tumor volume and weight and the incidences of lymph node metastasis were detected. Immunohistochemical staining was used to detect the lymphatic microvessel density of colon cancer tissues. Results After transfection of shRNA-VEGF-C, the mRNA of VEGF-C in Lovo cells were down-regulated. Four weeks after injection, the tumor volume and tumor weight in VEGF-C-shR-NA group were significantly smaller than that in empty plasmid group and NS group [(324. 9 ± 64. 8 ) mm3 vs. (553.5±90. 1)mm3 and (570. 1±85.4)mm3; (3.01 ±0.55)g vs (4.65 ±0.65)g and (4.75 ±0. 75)g]. The incidences of lymph node metastasis (30. 1% ) were significantly inhibited compared with empty plasmid group (50. 2% ) and normal saline group (53. 1% ). In shRNA-VEGF-C group, and microlymphatic density (15.5 ± 6. 90) was also decreased compared with empty plasmid group (24. 18 ±6. 45 ), and normal saline group (29. 59 ± 8. 21 ) ( all P <0. 01 ). Conclusion shRNA-VEGF-C can inhibit the growth of LOVO cells in vitro and vivo. VEGF-C may inhibit the lymph node metastasis of colon cancer by suppressing lymphangiogenesis.

Objectiv To investigate the expression and clinical significance of CA125 and CA15-3 in human breast cancer. Methods Radioimmunoassay method was used to determine the serum levels of CA125 and CA15-3 in 80 patients with breast carcinoma, 60 patients with benign breast diseases and 80 normal adults. Results The levels of serum CA125 and CA15-3 in patients with stage Ⅲ-Ⅳ breast carcinomas were significantly higher than those in patients with benign breast diseases,normal adults and stage Ⅰ～Ⅱ breast cancer patients (P0.05). Conclusion CA125 and CA15-3 are helpful to diagnose breast cancer, and can serve as a biological marker for monitoring tumor progression and evaluating prognosis in breast cancer.

Gynostemma pentaphyllum belonged to the Cucurbitaceae family.It was also called theQi-Ye-Dan,licorice stem,Gong-Luo Guo-Di,and etc.It contained saponin,flavonoids,polysaccharides,terpenoids and other chemical compositions.Its pharmacological effects included cholesterol-lowering activity,antitumor activity,hypoglycemic activity,anti-aging and boost immunity.This paper reviewed the research progress on chemical constituents,pharmacological effects and in vivometabolism of gynostemma pentaphyllum,in order to provide a theoretical basis for its further research and development.

Objective To explore the feasibility and value of laparoscopic-assisted surgery(LAS) for colorectal cancer.Methods The clinical data of 51 cases of LAS for colorectal cancer were reviewed retrospectively.Of them,3 cases were converted to open operation,and in 48 cases LAS for colorectal cancer was completed.Among them,9 cases underwent right hemicolectomy,8 cases left hemicolectomy,14 cases sigmoid resection,9 cases rectal anterior resection,and 6 cases Miles operation.Results No intra-operative deaths occurred. The average operation time was 195(150-320)min with 120(40-300)mL average blood loss.The average number of lymph nodes excised was 8(2-26).The time of bowel function recovery was 20-72h after operation.The average hospital stay after operation was 8(7-10)d.No major intra-operative blood loss nor postoperative complications were observed.The follow-up time was from 3-54months for 45(88.2%) patients.Two cases with Ducke′s C rectal cancer died,one died of liver metastasis 17 months after operation,and the another died of diffuse peritoneal metastasis 19 months after operation.There was no trocar port tumor metastasis and no local tumor recurrence at the small abdominal incision.Conclusions LAS of colorectal cancer is technically feasible and has advantages such as less surgical trauma,less bleeding and quick recovery.It is a mini-invasive,safe and efficient treatment for colorectal cancer.

Objective To investigate the expression level of RECK-mRNA and MMP-9-mRNA in breast cancer(BC) and fibroadenoma tissues and its significance.Methods The mRNA level of tissues of 39 cases of breast cancer and 14 cases of fibroadenoma was measured by RT-PCR technique and its correlation was analyzed.Results The mRNA level of RECK gene in breast cancer tissues was markedly lower than that in fibroadenoma tissues,while the MMP-9 level was higher in BC tissues.Conclusions RECK is a tumor suppressor gene, the expression in benign and malignant breast tissues is a negative relationship.BECK can inhibit the expression of MMP-9 and thus,inhibit the growth and metastasis of breast cancer.

Objective To observe the clinical efficacy ofXing Nao Kai Qiao (brain-awakening and orifice-opening) needling plus thunder-fire moxibustion in treating vertebrobasilar ischemia.Method Fifty-five patients with vertebrobasilar ischemia were randomized into a treatment group of 26 cases and a control group of 29 cases. The treatment group was intervened byXing Nao Kai Qiao needling plus thunder-fire moxibustion, while the control group was by oral administration ofYangxue Qingnao granules. The blood flow of vertebrobasilar arteries were observed by using ultrasonic Doppler blood-flow detector before and after intervention, and the clinical efficacies were compared between the two groups.Result The recovery and markedly-effective rate and total effective rate were respectively 61.5% and 96.2% in the treatment group, versus 34.5% and 89.7% in the control group, and the differences were statistically significant (P<0.01,P<0.05). The VS and VD of vertebral arteries and VS of basilar arteries were significantly changed after intervention in the treatment group (P<0.05). The VS of basilar arteries was significantly changed after intervention in the control group (P<0.05). After treatment, The VS of vertebral and basilar arteries in the treatment group was significantly different from that in the control group (P<0.05).ConclusionXing Nao Kai Qiao needling plus thunder-fire moxibustion is an effective approach in treating vertebrobasilar ischemia.

Objective To construct the eukaryotic expression plasmid containing human epidermal growth factor(hEGF) gene with signal peptide(SP).Methods After two pairs of primers were designed and synthesized,the cDNA fragment of hEGF and SP genes were amplified from total RNAs. The amplified cDNA fragments were cloned into pGEM-T vector.The expression plasmids were verified by double endonuclease digestion and DNA sequence analysis. Results With RT-PCR using two pairs of primers,two bands(about 90bp and 180bp) were obtained and confirmed as signal peptide and EGF cDNA fragment with electrophoresis analysis and DNA sequencing after cloned into pGEM-T vector.The SP and EGF cDNA fragments were inserted into plasmid pcDNA3.1(+).The bands of 240bp and 5.4kb were obtained and identified as the full length of SP-EGF cDNA fragment by DNA sequence analysis.Conclusion The eukaryotic expression plasmids containing hEGF gene is successfully constructed.

Objective To investigate the relationship between NF-kB activity of pancreatic acinar cells(PAC) and blood inflammatory cytokines ( IL-2, IL-6, IL-10, TNF-? and ICAM-1) in rat's ANP. Methods Fourty rats were randomly divided into two groups: ANP model group and contrast group. ANP was induced by retrograde injection of 5% sodium taurocholate into the pancreatic duct. NF-KB activity in the cell nuclear and IkBa activity in the cell spasm of PAC were measured by EMSA and Western-blot. Inflammatory cytokines were measured by ELISA. Results ANP model's NF-KB activity increased [(31.4?5.7) ?mol/L vs. (8.3?2.4) ?mol/L.(39. 4 ? 6. 4) ?mol/L vs. (10.7 ?2.6) ?mol/L. (33. 8?6.0)?mol/Lvs. (11. 5 ?2. 7) ?mol/L.(25. 7 ?4. 9) ?mol/L vs. (9.4 ?2.6) ?mol/L](P