Matrix metalloproteinases-9(MMP-9) is an important gene in coloreetal cancer occurrence and development.MMP-9 can induce cell proliferation,angiogenesis and neoplasm infiltration,and then leads to coloreetal cancer invasion and metastasis.MMP-9 can not only play the role individually in coloreetal canccr invasion and migration,but also can cooperate with other genes.MMP-9 is a key protease in terminal metastasis of coloreetal cancer.

Triptolide (TL) is a major active component extracted from Chinese traditional herb Tripteryginm wil-fordii Hook. In this article, the effects of TL on mixed lymphocyte culture (MLC),suppressor T cell(Ts) activity, delayed type hypersensitivity (DTH) reaction, IL - 2 secretion activity and Th/Ts ratio were evaluated, In vitro TL 0. 5~10 ?g ? L-1suppressed one-way MLC,Lymphocytes induced in first MLC with TL of 5,10 ?g ? L-1 suppressed the second MLC after irradiation with 3000 rad 60Co source. This suggests that TL may induce Ts cell-s. In vivo, DTH reaction sensitized to dinitrofluo-robenzene (DNFB) monitored by the increase in weight of the ears challenged with antigen was suppressed by TL at doses of 0. 12 to 0. 50 mg ? kg-1(ip,qd?5) and the IL -2 activity secreted by spleen cells of these mice was inhibited at doses of 0. 25 and 0. 5 mg ? kg-1. TL 0. 25, 0. 5 mg ? kg-1(ip,qd?8) also had prominent suppres-sive effects on enhanced DTH reaction which was induced by cyclophosphamide(250 mg ? kg-1,ip). Th/Ts ratio of mouse thymus cells were reduced after given 0. 25 mg ? kg-1 of TL for 5 consecutive days. The above-mentioned data suggest that TL has suppressive effects on cellular immunity function and the suppressive mechanism may be related to the suppression of Th cells and IL-2 secretion activity and the induction of Ts cells.

Objective To explore the effect and mechanism of atorvastatin on pulmonary hyper-tension in chronic pulmonary heart disease.Methods Sixty eight patients with chronic pulmonary heart disease were randomly divided into treatment group (n=35) and observation group ( n=33 ).Thirty healthy people were picked up from people taking physical examination at the same stage as control group.Patients in both treatment and observation groups were given routine treatment and the observation group were given atorvastatin (20 mg/d) supplement.Changes in pulmonary function,ultrasound cardiogram,plasma high-sensitive C-reactive protein (hs-CRP) and interleukin (IL-8) were observed before and after 6 months of treatment.Results The levels of hs-CRP,IL-8 and pulmonary arterial pressure in treatment and observation groups are higher than that in normal group before treatment (t=2.87,2.79,3.01,3.28,3.31,3.15,respectively,and P =0.005,0.007,0.004,0.001,0.001,0.002,respectively).The pulmonary arterial pressure,hs-CRP,IL-8 in observation group after treated for 6 months were significantly lower than those before treatment and in treatment group (t=2.17,2.59,2.63,1.91,1.86,1.74,respectively,and P =0.039,0.008,0.007,0.031,0.037,0.042,respectively).The pulmonary function indexes including FEV1 and FEV1/FVC in observation group were much better than those in treatment group after 6 months treatment (t=1.84,2.13,respectively,and =0.037,0.024,respectively).There were no significant differences on these indicators in treatment group after 6 months treatment when compared with before treatment ( P ＞ 0.05 ).Conclusion Atorvastatin can effectively improve the life quality and pulmonary function,decrease pulmonary arterial pressure of patients with chronic pulmonary heart disease.These effects may be related to the inhibition of inflammation in pulmonary vessels.

Homeodomain-interacting protein kinase 2(HIPK2)is a member of a member of the serine/threonine protein kinase family which localized in the mucleus.It is not only involved in advanced stage embryogenesis,development of nerve tissue,retina and muscular tissue,but also takes part in regulation of tumor signaling transduction,down-modulated expression of oncogene,induced apoptosis of tumor cells,and inhibited angiogeuesis of tumor.The regulation of HIPK2 in tumor signaling transduction pathway is associated with P53 signaling,Wnt/β-catenin pathway and hypoxia.

HIF-1α, a transcriptional activator regulating cells and tissues' response to hypoxia, can induce expression of a variety of factors and facilitate adaptation to hypoxia. Tumor hypoxic microenvironment and expression of HIF-1α is closely related to the occurrence of colorectal cancer, development, invasion, metastasis and prognosis, which becomes a hot spot in colorectal cancer research. To further clarify the process of colorectal cancer and to explore new treatment methods in colorectal cancer, HIF-1α in colorectal cancer studies was briefly reviewed.

ObjectiveTo elucidate the association between aquaporins (AQPs) expression in kidney tissue and edema of nephrotic syndrome(NS) patients.MethodsNS patients were divided into edema group (14 cases) and non-edema group (8 cases).Ten patients without NS were used as control group.Expressions of AQP1,AQP2,and AQP4 in renal tissues of 3 groups were detectedbyimmunohistochemistrywithstandardtechniquesandsemi-quantitativeanalysis.Association between AQPs expression and edema was examined.ResultsThe positive index of AQP1 expression in proximal tubules in edema group was 0.0373±0.0110,which was significantly lower as compared to non-edema group (0.0510±0.0120) and control group 0.0574±0.0100),while the difference between non-edema and control groups was not significant.The positive index of AQP1 expression in glomerulus was 0.0106±0.0037 in edema group,which was significantly higher than that in non-edema group(0.0021±0.0013) and control group(0.0020±0.0012),while no significant difference was found between the last two groups.AQP2 mainly localized in the collecting duct system.The positive indexes of AQP2 expression were 0.0498±0.0081,0.0370± 0.0072 and 0.0255±0.0103 in edema group,non-edema group and control group,respectively.The differences were significant among 3 groups.AQP4 expression was not found in the renal cortex and collecting duct system.ConclusionsAQPs expression is different in renal tissues of NS patients.AQP2 may play an important role in the edema of NS patients,and AQP1 may involve in the occurrence of edema.

Objective To investigate the changing of endothelial progenitor cells and nitric oxide in patients with pulmonary arterial hypertension secondary to chronic obstructive pulmonary disease.Method Mononuclear cells from 20 healthy persons (the control group, n = 20) , COPD patients without PAH (COPD non-PAH group, n =30) and patients with PAH secondary to COPD (COPD and PAH group, n=30) were investigated. Total mononuclear cells were isolated from peripheral blood by Ficoll density gradient centrifugation. EPC number and migration were assayed by colony forming unit-EPCs (CFU-EPCs) assay and modified Boyden chamber assay , respectively. EPC adhesion assay was performed by replanting those on fibronectin-coated dishes , then adherent cells were counted. The concentration of NO was measured with method of nitrate reductase.Result The numbers of CFU and migration, adhesion activity of circulating EPCs in COPD[ (21.9±3. 9)CFU-EPC] and PAH group[ (14. 2 ±3. 5)CFU-EPC] were significantly lower than that in non-COPD group and COPD non-PAH group [ ( 24.9 ±4.1) CFU-EPC ]. It was also observed that a strong negative correlation between the levels of PAH and the numbers of CFU and adhesion, migration activity of circulating EPCs. The NO level in the PAH group [ (43. 6 ±4. 8)ng/ml] was significantly lower than that in control group [ ( 67. 17±4.9 ) ng/ml ] ( P < 0.01). The NO level was positively correlated with number and migration ability of EPCs( r =0. 77,0.71, P <0.01) , but not correlated with adhesion ability.Conclusion The number of CFU and migratory, adhesive activity of EPC in patients withPAH secondary to COPD was significantly decreased. These changes may be associated with low level of plasma NO.

Objective To evaluate effects of three modalities with intravenous immrnoglobulin(IVIG) infusion in the treatment of Kawasaki disease(KD). Methods 76 KD cases were treated by the IVIG in the Deparment of Pediatric of Kaiping Central Hospital from 1998 to 2004.The three modalities were as follows: four days treatment(0.4 g/kg,for four days continuance),two days treatment(1 g/kg,for two days continuance),one day treatment(2 g/kg,for one day).Results(1) In treatment of fever,conjunctiva congest and mouth change,and recover in white blood cell and erythrocyte sedimentation,one day treatment and two days treatment had better curative effects with significantly difference(P0.05).(3)In the prevention of coronary artery dilate(CAD),one day treatment and two days treatment had better curative effects significantly difference(P

Objective To detect the protective mechanism of trehalose in tracheal cryopreservation.Methods Inbred male Sprague-Dawley (SD) rats were sacrificed with intraperitoneal injection of ketamine(150mg?kg -1).The tracheas were removed and immersed immediately in the freezing medium of low potassium dextran (LPD) solution only(Group Ⅰ) ,containing with 10% dimethylsulfoxide(DMSO)(Group Ⅱ), containing with 0.15mol?L -1 trehalose (Group Ⅲ),and containing with 10% DMSO and 0.15mol?L -1 trehalose (Group Ⅳ) respectively. A sterile plastic tube containing a 1-cm-long trachea was filled with the freezing medium,sealed,and frozen to -80℃ at rate of -1℃ per minute in a programmable freezer.Then the tube was stored in liquid nitrogen(-196℃) for 20 days. Then the specimen was thawed in a 37℃ water bath and rinsed with physiologic saline solution 10 times.Histologic changes before cryopreservation and after thawing were examined in each group. After the specimens were embedded in paraffin,5-(m-thick sections were stained with hematoxylin and eosin.The epithelium and cartilage was assessed. We also observed Bcl-2 and Bax gene expression by immunohistochemistry. At last, some tracheas(SD) after cryopreservation were thawed and transplanted into the abdominal cavity of Wistar rats. The transplanted tracheas were retrieved and assessed histologically.Results Microscopic findings of the tracheas in Group Ⅲ and Group Ⅳ showed their structure were intact and Bax gene expression was lower in cartilage after cryopreservation(20d) compared with other groups,especially in Group Ⅳ.The tracheas in Group Ⅲ and Group Ⅳ grew well after they were transplanted into cavity of Wistar rats heterotopically,too.There were no significant differences among 4 groups in Bcl-2 gene expression.Conclusion In tracheal cryopreservation the trehalose can protect the trachea by protecting the tracheal cartilage.It is one of the protective mechanism that the trehalose inhibit the Bax gene expression of cartilage cells.The concomitant use of trehalose and DMSO has a synergistic effect.

Objective The clinical manifestations of Parkinson''s disease (PD) are divided into non-motor symptoms and motor symptoms.Constipation is one of the common symptoms of non-motor symptoms of the disease.Constipation symptoms in PD generally occur earlier for 5~20 years, while drug treatment for PD constipation can lead to gastrointestinal damage.This study investigated the improvement in the treatment of anorectal dynamics and constipation symptoms in Parkinson''s disease by oral mosapride and press-needle therapy of Shu-Mu point.Methods 60 patients diagnosed as constipation of Parkinson''s disease were randomly divided into control group and treatment group, 30 cases in each group;patients in the control group were treated with oral mosapride tablets, while patients in the treatment group received press-needle therapy, three times per week.The observation course in both groups last for three months and follow-up visits were conducted before and after the course.Efficacy evaluation, PAC-QOL scale and anorectal dynamic examination were applied in the follow-up visit.Results The efficiency of treatment group was 81.7%, significantly higher than control group (70%), representing significant difference between the two groups (P<0.05).Both the methods could improve the PAC-QOL scale, and significant difference was found in comparison to that before the treatment(P<0.01), while no statistical significance was found between treatment group and control group after treatment(P>0.05).As to the anorectal dynamics, significant difference was found before and after the treatment in both groups (P<0.05, P<0.01), while no statistical significance were found between the two groups after treatment(P>0.05).Conclusion Both oral mosapride and press-needle can improve the quality of life and anorectal dynamics for PD patients, representing no significant difference.However, compared with mosapride, the overall efficacy of press-needle is better in improving the symptoms of constipation in PD, featuring more convenience, higher safety, less pain and no side effect, and it is worthy of clinical application.