Colorectal cancer is a common malignancy in China.The incidence of it showed an increasing trend with the economic development,living standards improvement and lifestyle changes.The traditional treatment methods include surgery,radiotherapy and chemotherapy.In recent years,hyperthermia has become a method for treating tumor.Hyperthermia kills tumor cells by thermal effect and no-thermal effect.Not only does it have a direct therapeutic effect on tumor cells,hyperthermia also has some synergy combined with radiotherapy and chemotherapy.Hyperthermia combined with conventional therapy can improve the local control rate and extend survival for patients.In this paper,the efficacy of hyperthermia has been reviewed,combined with a variety of treatment methods for colorectal cancer in China.

Extensive researches suggest that the metastasis of colorectal cancer involves multiple factors and genes.Recurrence and metastasis after surgery are the important reasons for poor prognosis of thesc patients with colorectal cancer.Tumorigenesis is a dynamic process.The levels of tumor markers are changed in different stages.It has not yet been found any kind of tumor markers specific for a certain type of colorectal cancer.The sensitivity and specificity of diagnoising colorectal cancer by detecting an individual tumor marker are not ideal.The better combination of tumor markers has its advantages,can improve the early diagnostic rate.Combining detection of tumor markers will improve the diagnostic yield.

There is a long history of Toad venom in the treatment of cancer in China.Bufalin,extracted from Toad venom,is one of the biologically active compounds of anticancer.We elaborate the molecular mechanism of bufalin on anticancer activity from several aspects such as inducing cell apoptosis and differentiation,inhibitting cell proliferation and angiogenesis,enhancing the sensitivity of chemotherapeutics,which can provide the basis for in-depth study of Toad venom and its development and clinical medication.

Since the laparoscopic thyroidectomy carried out in China for ten years,this technique has become more and more mature,indications gradually broadened,and playing a vital role in the field of thyroid surgery.This article will explain this technique in the aspects of approaches,the establishment and maintenance of the surgical space,indications,antiindications and complications.

As one of the most major disease,malignant tumor is harmful to human health.Althought it' s exact pathogenesis is still not clear,it is certainly that the formation of cancer is typical of containing many factors and having gone through many steps.Resulting from the abnormal activation of a series of proto-oncogene as well as the inactivation caused by many anti-oncogene mutation,some signal pathways work abnormally.In recent years,the study of Hedgehog ( Hh),as the signal pathway,shows that Hh encodes a series of secreted signaling protein,having an important effect on the differentiation and proliferation of cells in the process of embryogenesis.The occurrence of abnormal activation of Hh signaling pathway plays a significant role in the process of tumorigenesis.Signal paths of Hh signaling protein include as much as following at least:patched(Ptch),smoothened (Smo),fused (Fu),suppressor of fused (SuFu),costaⅠ-2 (Cos)-2 and cubitus interruptus (Ci) and so on.In this paper,the function of Hh genetic family and the mechanism of its relation to many kinds of human cancers will be givien a brief overview.

Colorectal cancer is currently the world's fourth incidence of malignant tumors,the early clinical manifestations are not obvious,so the early diagnosis is difficult to find,most of them are in progress.Treatment of advanced stage with chemotherapy,interventional therapy,radiotherapy and other methods,in which chemotherapy in the killing of tumor cells at the same time,the normal cells of the body also has a killing effect.In recent years,all kinds of new nano targeting delivery system has been developed,which can be targeted to the tumor tissue,so it is more and more important in the treatment of intestinal tumor,especially with metastasis.The author has made an overview of the types of nano drug carrier materials,the research status and its application in the research of colorectal cancer.

It is to difficult to diagnose and treat hepatobiliary surgical diseases since its diverse clinical manifestations,which increases the difficulty of clinical internship.Taking clinical cases as teaching material,case-based learning was combined with teaching theme and was conducted by means of discussion and question and answer between teachers and students.Students can know about concepts or theories related to teaching theme.Case-based learning in internship can consolidate basic knowledge of hepatobiliary surgery,cultivate clinical scientific thinking and is helpful in analyzing and resolving problems of hepatobiliary surgical diseases.

Objective To study the effect of aquaporin 1 on intestinal capillary endothelial barrier in rats with experimental acute necrotizing pancreatitis (ANP).Methods In this study,160 male Sprague-Dawley rats were randomly divided into five groups:Control group ( n =32),ANP group (n =32),NS group,Dexamethasone group,and Acetazolamide group.Eight rats in each group were sacrificed at 3,6,12 and 18 h after induction of experimental models.Volume of ascites and levels of serum amylases were deternined at each time point.Pathological changes in intestine tissues were observed under electron microscope after HE staining.Capillary permeeabilities in intestine tissues were detected by Evans blue (EB) extravasation experiment.The mRNA and protein expressions of AQP1 in intestine tissue were determined by real-time PCR and Western blotting,respectively.Results Serum amylase level in ANP group was significantly higher than that in control group.Amylase level in dexamethasone group was lower than that in ANP group,and amylase level in acetazolamide group was higher than that in ANP group at 12 h (P ＜0.05 ) ; The concentration of EB in intestine tissues at each time point in ANP group was significantly higher than those in control group,and EB in dexamethasone group was lower than those in ANP group at 6,12 and 18 h.EB in acetazolamide group was higher than that in ANP group at 3 h ( P ＜ 0.05 ) ; The mRNA expression of AQPI in ANP group was significantly lower than that in control group.The expression of AQP1 in dexamethasone group was higher than those in ANP group at 6,12 and 18 h,and the expression of AQP1 in acetazolamide group was lower than that in ANP group at 3,6,12 h in intestine tissue ( P ＜ 0.05 ).Protein expression of AQPI in tissues in ANP group was significantly lower than that in control group.The expression of AQP1 in dexamethasone group increased more than that in ANP group at 3,6,12 h,and the expression of AQP1 in acetazolamide group was lower than that in ANP group at 3 h,6 h ( P ＜ 0.05 ).Conclusions The expression of AQP1 is down-regulated in intestine tissue in rats with acute necrotizing pancreatitis,and AQP1 could play an important role in the pathogenesis of capillary endothelial barrier dysfunction.

Background and purpose:Suppression of apoptotic signaling pathways is an important factor in tumor cell resistance. Research on cell apoptosis will open up a new way of reversing drug resistance and tumor treatment. This study examined the effects of a novel naphthalimide derivative 8c on multidrug resistant colon cancer HCT116/L-OHP cells and explored the molecular mechanisms underlying the apoptosis induction. Methods: The anti-proliferative effects of 8c were detected by CCK-8 assays and the effects on apoptosis induction were examined by lfow cytometry. The mRNA expression levels of p53, Bax and Bcl-2 were measured by real-time PCR;The protein expressions of p-p53, Bax, Bcl-2 and Cyt-c were detected by Western blot. Results:8c (IC50=8.16 μmol/L) seemed to be more potent than amonaifde (IC50=28.37 μmol/L) against HCT116/L-OHP cells. 8c induced apoptosis on HCT116/L-OHP cell lines through intrinsic or mitochondria dependent pathway. The protein expression of phosphorylation of p53 at Ser-15 was increased, but the mRNA level of p53 did not increase in HCT116/L-OHP cells. Bax protein and mRNA levels were signiifcantly increased, and Bcl-2 protein and mRNA levels were decreased, suggesting an increase of Bax/Bcl-2 ratios. Meanwhile, 8c induced a substantial release of cytochrome c from the mitochondria into the cytosol in HCT116/L-OHP cells. Conclusion: 8c induced cell death signal by inducing the activation p53 phosphorylation which subsequently activated related protein expressions of apoptotic pathway, which may be an important mechanism of 8c on inhibiting proliferation of HCT116/L-OHP resistant cells. All the results suggested that 8c was a potent compound to be developed as an anti-tumor and anti-resistance agent for clinic application in the future.

Objective To study the effect of brucine on the growth of a hepatocellular carcinoma cell line in vitro. Methods Brucine was added into a liver cancer cell line of SMMC-7721 in vitro, at drug concentration of brucine from 2. 5 μg/ml to 400 μg/ml. The inhibition rate of cell growth was measured by MTT technique after the cells were cultured for 72 hours. The protein and mRNA expression of PCNA,cyclin D1 and FAS were respectively assayed with Western blotting and fluorescent quantitation RT-PCR techniques at 24, 48, 72 h. Results The inhibition rate of liver cancer cell was near 100% when the brucine concentration was at 320 μg/ml. The protein and mRNA expression of FAS were of no significant difference at 24 h vs 48 h ( seperately F = 2. 547,1. 582, all P ＞ 0. 05 ), and significant difference existed at 24 h vs 72 h( seperately F = 1. 036, 1. 137, all P ＜ 0. 05 ). The protein and mRNA expression of PCNA,Cyclin D1 were of no significant difference between various time period( seperately PCNA F = 3.612,2. 174,3.029;Cyclin D1 F=2.361,2.915,1.976,all P＞0.05). Conclusions Brucine inhibits the growth of liver cancer cells, by inducing increased apoptosis of the cells probably through FAS overexpression.