A novel method for assaying the enzymatic activity of ribosome-inactivating proteins(RIPs) has been developed.The principle of the method is based on that RIP can remove some adenine bases from double-stranded supercoiled DNA molecules,subsequently,the deadenylated DNA was cleaved into nicked and linear form.After treatment with acidic aniline,the deadenylated DNA was degraded into many small fragments,and run out of the gel.The enzymatic activities of two RIPs(trichosanthin and cinnamomin) were tested using this method,the limit of sensitivity is about 50 ng(trichosanthin) and 5 ng(reduced cinnamomin) .It should be emphasized that the merit of this method is to avoid the preparation of ribosome.

Objective To observe the law of removing dampness, melting phlegm and tonifying spleen on blood lipids in hyperlipidemia rat and its vascular endothelial protective effect. Methods Animals were randomly divided into 6 groups, the high-fat diet of 35 d, 16 d orbital check blood lipids to confirm modeling success and gavage was given by different experimental requirements. NOS and vascular endothelial gene expression were determined at 3rd and 7th day. Results After treatment, NOS expression in experimental rats compared with the normal group, P

Objective: To explore the relationship between prenatal anxiety and cesarean section (c-section) with non-medical indication.
Methods: Nested case-control study was used to analyze the risk factors for c-section with no medical needs: 433 pregnant women with gestational age longer than 24 weeks were enroled in this study. According to the mode of delivery, we divided them into a vaginal delivery group, a c-section group without medical need and a c-section group with medical need.
Results: The c-section rate was 62.1%, 55.8% of which was c-section without medical need at family request. The score of state anxiety (S-AI) and trait anxiety (T-AI) was 42.53±11.04 and
44.40±10.23 respectively, much higher than that of normal population. After the adjustment of maternal social economic status and other prenatal statuses for this pregnancy, the prenatal anxiety was still associated with c-section with non-medical indication. The adjusted odd ratio for prenatal anxiety state, prenatal trait anxiety state and c-section with non-medical indication was 1.41 (95%CI: 1.06-1.87) and 1.23 (95% CI: 1.08-1.40), respectively.
Conclusion: Prenatal anxiety state is a risk factor for c-section with non-medical indication.

Viral myocarditis (VMC) is a clinical frequent cardiovascular disease with extremely high mortality and disability rate ,which seriously impairs the health of children and young adults ,and its pathogenesis has not been fully elucidated .It is generally believed that VMC pathogenesis is mainly related to direct damage on myocardial cells ,immune damage ,cell apoptosis and cytokines .The present article made a summary about the research progress of its pathogenesis .

AIM:To explore the effect of aldosterone on visfatin gene expression and secretion in 3T3-L1 preadipocytes or adipocytes.METHODS:Aldosterone at concentration of 10-8 or 10-6 mol/L with or without 10-6 mol/L spironolactone was added to cultured 3T3-L1 preadipocytes or adipocytes for 24 h or 48 h.The mRNA levels of visfatin and mineralocorticoid receptor were measured using real time PCR.The concentration of visfatin in the culture medium was determined by ELISA.RESULTS:In 3T3-L1 preadipocytes treated with aldosterone,the mRNA expression of visfatin reduced and the mRNA expression of mineralocorticoid receptor(MR) increased,but the concentration of visfatin in culture medium was not regulated significantly by aldosterone.In adipocytes with aldosterone treatment,the mRNA expression of visfatin and visfatin concentration in culture medium reduced,and mRNA expression of MR increased.The effect of aldosterone was blocked by spironolactone to some extent.CONCLUSION:Aldosterone inhibits the gene expression and protein secretion of visfatin in 3T3-L1 adipocytes.

Objective To investigate the relationship between the degree of serum cortisol suppression by low-dose dexamethasone (1 mg) and full serum cortisol suppression (suppression rate > 50% ) by high-dose dexamethasone (8 mg) in patients with Cushing syndrome, and to evaluate these tests in Cushing disease. Methods Ninty-one patients with Cushing syndrome were studied retrospectively. The relationship of 20%, 30%, 40%, and 50% cortisol suppression by overnight 1mg dexamethasone with full serum cortisol suppression by overnight 8 mg dexamethasone was analyzed, and the sensitivity and specificity in the diagnosis of Cushing disease were evaluated. Results The degree of cortisel suppression during overnight 1 mg dexamethasone suppression test was correlated with that during overnight 8 mg dexamethasone suppression test (r=0. 649,P<0. 001 ). 30, 22, 13, and 9 patients had greater than 20%, 30%, 40%, and 50% serum cortisol suppression respectively during overnight 1 mg dexamethasone suppression test. Among them, 23 ( 76. 7% ), 20 (90. 9% ), 12 (92.3%), and 9 ( 100.0% )patients had full serum cortisol suppression during overnight 8 mg dexamethasone suppression test. The sensitivity of the cutoff of greater than 20%, 30%, 40%, and 50% serum cortisol suppression for the diagnosis of Cushing disease was 52.8%, 32.7%, 22.6%, and 15.7%, and the specificity was 94.7%, 94.7%, 97.4%, and 97.4% respectively. Conclusions In patients with Cushing syndrome, greater than 20% serum cortisol suppression during overnight 1 mg dexamethasone suppression test is usually associated with full serum cortisol suppression during overnight 8 mg dexamethasone suppression test, and most of them are finally diagnosed as Cushing disease.

Objective To investigate relationship between adiponectin and cardiac damage induced by aldosterone in SD rats. Methods Male SD rats were treated with aldosterone infusion for 4 weeks, systolic blood pressure (SBP) was measured every week. At the end of experiment, the myocardial structure was observed, the levels of adiponectin in plasma and adiponectin mRNA expression of adipose tissue in epididymal fat pad were measured. 3T3-L1 adipocytes treated with 10-8 and 10-6 moL/L aldosterone for 24 and 48 h, adiponectin mRNA expressions and adiponectin concentrations in culture medium were measured. Results Aldosterone induced only a slight increase in the SBP of SD rats[(123±7)mm Hg, P<0.05]. However, aldosterone significantly induced cardiac ultrastructure changes, such as mitochondrial swelling and disordered internal structures. Furthermore, the level of plasma adiponectin decreased 22.8% after aldosterone treatment for 4 weeks ( P<0. 05 ). When 3T3-L1 adipocytes were treated with 10-8 and 10-6 mol/L aldosterone for 24 h, adiponectin concentrations in culture medium decreased 21.8% and 27. 2%, respectively (P < 0. 05); for 48 h, adiponctin mRNA expressions decreased 22.1% and 37.4%, respectively ( P<0. 05 ). The effect of aldosterone was reversed by spironolactone,which was partly independent of SBP. Conclusions Low level of adiponectin may be involved in cardiac damage induced by aldosterone in SD rats.

Objective To study the effect of mental intervention on pregnant result in patients undergoing IVF-ET treatment.Methods 206 patients undergoing IVF-ET treatment in the hospital from February 2012 to Jan-uary 2013 were selected and randomly divided into two groups. The experiment group (n=103) was followed by mental intervention after the patients enrolled the IVF-ET treatment, the control group (n=103) enrolled the IVF-ET treatment without mental intervention.Results The HAMA and HAMD quantity grades for anxious and depression of patients in the experiment group were significantly lower than those of control ( <0.01), and the pregnancy rate of experiment group (45.63%) was higher than that of control (30.10%) <0.05. Conclusion Mental intervention for patients undergoing IVF-ET treatment could alleviate their anxiety-depression and improve the pregnancy rate of IVF.

The ratio of plasma aldosterone concentration to plasma renin activity (ARR) is a practical parameter in screening for primary aldosteronism (PA).However,variations of the cutoff value of ARR in different studies have been reported due to plenty of influential factors that may affect the secretions of renin and aldosterone. Lack of standardization of assays for ARR also makes direct comparisons among different studies difficult.The associated influential factors on ARR were introduced in this review.

Objective To study and distinguish the sonographic characteristics of chronic lymphocytic thyroiditis (CTL) and its nodules.Methods Ultrasonographic characteristics of 107 patients with histologically confirmed CTL was observed with a 7.5-12 MHz transducer and confirmed with the operation and pathology.Seventy four cases of CTL were examined by color Doppler flow image (CDFI),serum thyroid hormone levels were determined in 38 cases of CTL.Results In 57 cases of CTL,the pattern of diffuse low echoes was found in 14 cases (24.6 %),and nodulose pattern in 43 cases (75.4 %) in which diffuse numerous hypoecoie microdules in 16 (37.2%),and sporadic small nodules in 27 (62.8 %).All cases showed degeneration and disappearance of thyroid follicles,lymph cells invasion in varying degrees on pathology.Nodular goiter was commonly detected in 40 cases CTL (37.4 %),adenoma in 4 cases (3.7 %),hyperthyroidism in one case,non-Hodgkin lymphoma in one case,thyroid carcinoma in 4 cases (3.7 %).Color dopple flow imaging showed in 74 cases,0-Ⅰ 34 cases,Ⅱ 38 cases,Ⅲ 2 cases.The increased flow were observed in 38 cases in both Anti-Tpo and Anti-TG,and in 26 cases in TSH.Conclusion Ultrasonography is complex in CTL,with more complications.Ultrasonography are distinguished between the nodule of CTL and the nodule in the other thyroid diseases.Ultrasonography could help to avoid unnecessary surgical intervention,and provide strong evidence for CTL and its complication in clinic treatment.