Objective:To investigate the relationship between miR-211 and the occurrence of epithelial ovarian cancer,and its influence on the proliferation of ovarian cancer cells. Methods:To analyze the expression miR-211,CDK6 and Cyclin D1 of 30 cases of ovarian cancer and ovarian cancer cell lines,and 30 cases of non-ovarian cancer tissues and the normal ovarian epithelial cells were selected as the control group,and to analyze effects of miR-211 on the proliferation of ovarian cancer cells,as well as the Cyclin D1 and CDK6. Results:miR-211 relative expression level of ovarian cancer tissue was significantly lower than that in the normal group ( P<0. 05). Relative expression level of miR-211 of ovarian cancer cells was significantly lower than that in normal ovarian epithelial cells (P< 0. 05);in epithelial ovarian cancer cell line HO8910,cell number of miR-211 on the 3-day and the 4-day was significantly lower than that of miR-Ctrl group (P<0. 05);relative expression levels of Cyclin D1 and CDK6 in epithelial ovarian cancer were significantly higher than those in normal ovarian epithelial tissues (P<0. 05);miR-211 of epithelial ovarian cancer cell lines significantly inhibited Cyclin D1 and CDK6 expression;in ovarian cancer tissues,Spearman correlation analysis results showed that relative expression levels of miR-211 and Cyclin D1 and CDK6 was negatively correlated ( r=-0. 583, P= 0. 010 ) . Conclusion: miR-211 can inhibit the proliferation of ovarian cancer cells,and inhibit the expression of Cyclin D1 and CDK6;miR-211,Cyclin D1 and CDK6 in ovarian cancer may be involved in the regulation of ovarian cancer.

Human intestinal microbial flora has complex interaction with intestinal mucosal immune system,which maintains intestinal homeostasis. Inflammatory bowel disease( IBD)is a chronic and nonspecific intestinal inflammatory disease,the etiology and pathogenic mechanisms have not yet been fully clarified. Dysbiosis of intestinal microbiota is an important factor in the pathogenesis of IBD,and modulation of intestinal microbiota can be one of the measures for treatment of IBD. This article reviewed the dysbiosis of intestinal microbiota in IBD.

Anorectal malignant melanoma is a rare disease with atypical clinical symptoms and has a high misdiagnosis rate.Combined with rectal touch,endoscopy,ultrasonic inspection,CT,MRI,PET-CT,electron microscopy and the result of immunohistochemistry could help improve the diagnosis rate.This tumor tends to relapse and metastasis with poor prognosis,and there is no effective treatment.We should be on the alert for it,and the main point is early discovery,correct diagnosis,multi-disciplinary comprehensive treatment,in order to improve the survival rate of patients.

This research analyzed the current situation of English learning anxiety of TCM majors by means of conducting a questionnaire based on the English learning anxiety scale (ELAS).The questionnaire results showed that communication apprehension was most prominent in terms of extent and amount while test anxiety also accounted for an important part of anxiety.The research further analyzed the influences of English learning anxiety and proposed some measures to ease students' anxiety and to enhance learning efficiency from teachers' perspectives.

Objective To evaluate the effect of C-type natriuretic peptide (CNP) on paraquat-induced pulmonary fibrosis in mice.Methods Fifty-four male Kunming mice,aged 8-10 weeks,weighing 30-35 g,were randomly divided into 3 groups (n=18 each) using a random number table:control group (C group),pulmonary fibrosis group (PF group) and CNP group.Paraquat 10 mg/kg (in 0.1 ml of normal saline) was injected intraperitoneally once every 3 days for 5 times in total in PF and CNP groups,and in addition CNP 3 μg/kg (in 0.1 ml of normal saline) was simultaneously injected via the tail vein once every 2 days for 14 times in total in group CNP.The equal volume of normal saline was given instead of paraquat in group C.On days 1,8 and 15 after the end of administation of paraquat,6 mice were sacrificed,and lungs were removed for determination of wet to dry weight ratio (W/D ratio),hydroxyproline (HYP) content (using alkaline hydrolysis),and transforming growth factor-beta 1 (TGF-β1) content (using enzymelinked immunosorbent assay) in lung tissues.Results Compared with group C,the W/D ratio and contents of HYP and TGF-β1 in lung tissues were significantly increased at each time point after the end of administation of paraquat (P＜0.05),and the pulmonary fibrosis was obvious in group PF.Compared with group PF,the W/D ratio and contents of HYP and TGF-β1 in lung tissues were significantly decreased at each time point after the end of administation of paraquat (P＜0.05),and the pulmonary fibrosis was significantly attenuated in group CNP.Conclusion CNP can reduce paraquat-induced pulmonary fibrosis in mice.

Objective To investigate the causes of fever in systemic lupus erythematosas (SLE)patients and identify the characteristics of the fever caused by SLE fever infection after steroid therapy.Methods From January 2002 to May 2007, 487 SLE hospitalized patients with fever were admitted and their data were retrospectively studied. The clinical manifestations and medications were followed up. A case control design was carried out to identify the differences between fever caused by lupus and infection. Results Among all the 487 patients, 265 had infection, 206 had fever that was caused by SLE per se, fever caused by both lupus and concurrent infection was confirmed in 8 patients, malignancy and miscellaneous were the causes of fever in 4 respectively. The most common sites of infection were respiratory tract (61.3%), skin and mucosa (10.9%) and central nervous system (9.1%). The main microorganisms isolated were bacteria (77.4%), fungi (13.5%) and virus (7.8%). Prednisene ≤ 100 mg/d could suppress fever caused by lupus in 81.0% patients, usually within 1 to 5 days. In the case control study, lower C3, C4 and CH50, anemia, lymphocytosis, higher immunoglobulin levels, elevated anti-dsDNA antibodies, elevated anti-nuclear antibodies and higher SLEDA1 score were associated with SLE fever. Long SLE duration, old age, elevated CRP levels,leukocytosis, neutrophilia, high accumulated doses of prednisone and ever use of immunosuppressive medications were factors associated with infection. Conclusion The fever of in-patient SLE patients is mainly caused by infections and disease flare. Moderate dose of steroid therapy is effective to control the fever caused by lupus flare. The fever caused by SLE has different clinical features and laboratory results when compared to that caused by infection although both responses to steroid therapy.

Objective:To investigate the apoptosis by thiocoraline in combination with cisplatin on cervical cell line c4-1 and Hela and its mechanism. Methods:Different concentrations of thiocoraline and cisplatin alone or in combination used for cultured c4-1 and Hela cells. The inhibition of cell proliferation was detected by MTT assay,and the apoptosis was detected by Hoechst 33342 and AO-EB staining. The expressions of the protein Bax,Bcl2,p53,p21 were detected by Western blot. The cell cycle of c4-1 and Hela cells were detected by Flow cytometry. Results: The cell proliferation activity of c4-1 and HeLa cells were inhibited obviously by different concentrations of thiocoraline and cisplatin alone or in combination. The inhibition effect was in a dose-dependent manner. Meanwhile, when the concentrations of thiocoraline and cisplatin were 10 nmol/L and 4 μmol/L, respectivity the inhibitory effect was most significant (P<0. 05);Hoechst 33342 and AO-EB staining showed that the cell apoptosis effect was more obvious on thiocoraline in combination with cisplatin. The Western blot showed that the expressions of the protein Bax,p53,p21 were significantly up-regulated, and the Bcl2 was significantly down-regulated. Conclusion:Thiocoraline combination with cisplatin could up-regulate the expression of the protein Bax,p53,p21 and down-regulation the expression of Bcl2 to inhibition the proliferation and promotion apoptosis of cervical cell line c4-1 and Hela.

Objective: To study the effect of naringin on human cervical cancer HeLa cell line and its related mechanism.Methods:HeLa cells were cultured in vitro in the presence of different concentration naringin .The method of MTT was used to detect the growth of HeLa cell in 24 h, 48 , 72 h.Apoptotic cells were observed by Hoechst 33258 staining.The protein expressions of COX-2 in SCL-12 cells were analyzed by Western blot .Results: The inhibition ratio of the cell growth in middle dose group and high dose group significantly higher than control group ( P<0.05 ) and the inhibition ratio in low dose group was no significant change(P>0.05).The apoptosis ratio of the cell growth in middle dose group and high dose group significantly higher than control group( P<0.05 ) and the apoptosis ratio in low dose group was no significant change ( P>0.05 ) .The expression of COX-2 was significantly decreased in middle dose group and high dose group .Conclusion: Naringin plays a central role in the apoptosis of the human cervical cancer HeLa cell line ,which may be related to the expression of COX-2.

BACKGROUND:Bone marrow mesenchymal stem cells have potential to self-renewal and multi-lineage differentiation. But after a long period of culture in vitro, the proliferation and differentiation capacities of bone marrow mesenchymal stem cells gradual y loss, the mechanism underlying which is not clear now.
OBJECTIVE:To observe the expression of autophagy-related gene Beclin-1 in differentiation from human bone marrow mesenchymal stem cells into neuron-like cells in vitro.
METHODS:The changes of morphological characteristics of neuron-like cells differentiated from human bone marrow mesenchymal stem cells induced by epidermal growth factor were observed. The expression of neuron-specific enolase and glial fibril ary acidic protein in treated and untreated human bone marrow mesenchymal stem cells were detected using immunocytochemistry. The Beclin-1 protein expressions were detected by western blot before and after induction.
RESULTS AND CONCLUSION:After being induced, human bone marrow mesenchymal stem cells presented classical neuron-like morphology;the expressions of neuron-specific enolase and glial fibril ary acidic protein were 78.7%and 8.1%, respectively. The expression of Beclin-1 protein was changed correspondingly during the induction, which increased after 30 minutes of induction and decreased gradual y after 1 hour of induction. Human bone marrow mesenchymal stem cells could be induced into neuron-like cells in vitro by epidermal growth factor. Autophagy-related gene was highly expressed in the induction of early differentiation and the expression gradual y reduced until it remained at a low level during the differentiation.

Small molecule covalent inhibitors, or called as irreversible inhibitors, are a type of inhibitors that exert their biological functions by irreversibly binding to target through covalent bonds. Compared with non-covalent inhibitors, covalent inhibitors have obvious advantages in bioactivity. Nevertheless, these agents may also exhibit larger toxicity once off-target effects arise. This "double-edged swords" property often leads drug researchers to avoid attaching them. In recent years, some problems such as drug resistance are difficult to be solved with reversible inhibitors leading researchers to pay more attention on the covalent inhibitors. In this review, we shall make a short summary to the recent research progress of covalent inhibitors and the interaction modes between covalent inhibitors and their target protein residues.