Objective To comparative analysis the intracytoplasmic sperm injection (ICSI)result and rate of sperm DNA in-tegrity (DNA fragmentation index,DFI)about testicular and epididymis sperm.Methods Totally 183 obstructed azoospermia pa-tients were choosed to use ICSI.80 cycles by PESA and 103 cycles by TESA,compared two groups of sperm DNA integrity rate and ICSI outcome.Results Sperm DNA integrity rate,fertilization rate,cleavage rate,good-qualityembryo rate and pregnancy rate com-pared with no difference by ICSI(P >0.05).Conclusion DNA integrity rate and ICSI outcomes of the testis and epididymis sperm have no significant differences,clinicians can be based on personal experiences or patients,wills to select sperm for ICSI.

ObjectiveTo evaluate the multi-phase imaging ability of dual source CT coronary angiography and the effects of whole-phase interval reconstruction and the four dimensional(4D)mode of"Inspace"software on the imaging quality of dual source CT coronary angiography.MethodsFifty patients performed coronary CT angiography(CTA),and the images were reconstructed from 10% to 100% of the R-R interval(the reconstruction interval was 10%).The imaging quality scores of the three main coronary arteries were assessed by two experienced radiologists using the 4D mode of"Inspace"software On workstation.ResultsThe average scores of imaging quality in the RCA.LAD and LCX at all 10 reconstruction phases were 1.71,2.57 and 2.03 respectively. The scores of imaging quality in the three main coronary arteries were all over 2.0 when the reconstruction phase were at 30%,40%and 70%of the cardiac circle.The imaging quality scores in the three main coronary arteries reached 3 at least one phase both in systole(10%-40%)and in diastole(50%-100%)in 41 cases(82%).The imaging quality scores in the left anterior descending artery reached 2 at all phases in 25 cases(50%),and reached 3 in 5 cases(10%).Conclusion Dual source CT coronary angiography can achieve good image quality in mid-late systole(30%-40%)or mid-diastole(70%).

Objective To investigate the effects of the serum from rats with hemorrhagic shock and Shenfu injection, on the expression of endothelial cell protein C receptor (EPCR) in human umbilical vein endothelial cells (HUVECs) cultured with rat serum. Method The soluble endothelial protein C receptor (sEPCR) in supernatant, the expression of EPCR mRNA and protein level of EPCR in HUVECs were detected by using enzyme linked immunosorbent assay ( ELISA), reverse transcription polymerase chain reaction (RT-PCR), and western bloting (WB) in normal control group, hemorrhagic shock serum (3 h, 12 h, 24h, 72 h) group, and Shenfu-treated (3 h, 12 h, 24 h, 72 h) group, respectively. Results The mean levels of sEPCR and the expression of EPCR mRNA were significantly higher in hemorrhagic shock serum (12 h, 24 h) group, and Shenfu -treated(24 h)group than those in normal control group (all P ＜0.01 ),the mean levels of sEPCR and the expressions of EPCR mRNA were significantly higher in Shenfu-treated ( 12 h) group than those in normal control group ( all P ＜0. 05 ), while the levels of protein were lower in hemorrhagic shock serum ( 12 h, 24 h) group and in Shenfu-treated(24 h)group than those in normal control group ( both P ＜0.01 ), and the level of EPCR protein was lower in Shenfu-treated( 12 h) group than that in normal control group ( P ＜ 0. 05) . The mean levels of sEPCR and the expressions of EPCR mRNA were significantly lower in Shenfu-treated ( 12 h, 24 h) group than those in hemorrhagic shock serum ( 12 h,24 h) group (all P ＜0.05), while the levels of EPCR protein were higher in Shenfu-treated ( 12 h, 24 h)group than those in hemorrhagic shock serum ( 12 h, 24 h) group ( P ＜ 0.05 ). Conclusions These data suggest that Shenfu injectio could affect the expression of EPCR mRNA and the level of EPCR protein, thereby it might be effective in prevention of development of hemorrhagic shock.

OBJECTIVE：To provide reference for the drug retailers when making dual-channel pricing decisions in China. METHODS：Based on the analysis of the existing literature and the characteristics of drug supply chain ，taking the dual-channel drug retailers as the research object ，the effects of medical insurance payment policy ，consumers’risk aversion factor and inconvenience cost on consumers ’decision-making behavior were considered ，and dual-channel pricing strategy model for drug retailers was constructed. The reverse induction method was adopted to analyze and solve the model ，obtain the optimal pricing and optimal profit function of the drug retailer. The numerical simulation was adopted to simulate and analyze the effects of consumer medical insurance payment utility ，risk aversion factor and inconvenience cost on drug retailer dual-channel pricing and profits. RESULTS：When the utility of medical insurance payment increased ，the pricing of drugstores and the total profit of dual-channel of drug retailers would increase ；while consumers ’risk aversion factor and inconvenience cost showed a U-shaped trend with retailer ’s dual-channel total profits. In addition ，compared with existing e-commerce platforms ，retailers could make more profits by building their own e-commerce platforms. CONCLUSIONS ：Medical insurance payment policy has a great impact on the profits of dual-channel drug retailers. Drug retailers should continue to pay attention to the trend of relevant national policies and ensure their own profits by adjusting pricing in time. When medical insurance payment utility is in low level ，dual-channel drug retailers can ensure market demand by reducing the retail price of drugstores ，and should use flexible sales strategies to attract consumers. For consumers’risk aversion and inconvenience cost ，drug retailers can adopt strategies such as providing distribution services for consumers with high inconvenience cost.

Filamentous fungi are important industrial microorganisms. The focus on its metabolic engineering is to optimize the metabolic pathway with gene expression regulation technology to meet with the industrial production needs. Antisense RNA technology due to its simplicity compared with the gene knock-out technology has great perspectives in filamentous fungal metabolic control. It is an efficient method for regulating gene expression and a key tool for metabolic engineering. In this article, we addressed the mechanism of antisense RNA technology and its applications in filamentous fungal metabolic engineering. Additionally, future perspectives were discussed.
Fungi ; genetics ; Gene Expression Regulation, Fungal ; Genetic Engineering ; methods ; Industrial Microbiology ; methods ; Metabolism ; RNA, Antisense ; genetics ; metabolism

Objective To investigate the maternal and fetal outcomes of pregnant women with subclinical hypothyroidism, and clinical observation of thyroxine replacement. Methods From March 2014 to March 2015, the clinical records of 216 women with subclinical hypothyroidism(including 166 cases with thyroxine replacement), and hypothyroidism(n=69)during pregnancy who delivered at our hospital were reviewed. The maternal complications and neonatal outcomes were compared with 406 healthy women who delivered during the same period. Results The age, number of fetus, and morbidity rate of gestational hypertension were without significant differences in those groups. The morbidity of gestational diabetes in subclinical hypothyroidism group and hypothyroidism group were significantly higher than those in control group(13.4%, 17.4% vs 0.2%, P<0.05). The rate of thyroid peroxidase antibody and thyroglobulin antibody positive in subclinical hypothyroidism group and hypothyroidism group were significantly higher than those in control group(26.9%, 23.2% vs 9.9%; 15.7%, 23.2% vs 8.1%, all P<0.05). No matter treated or not treated in subclinical hypothyroidism group, the preterm birth, Apgar score, low birth weight, birth defects, and infant congenital hypothyroidism were without significant differences as compared to the control group(P>0.05). Further compared those between treated and untreated subclinical hypothyroidism, the results were also without significant difference(P>0.05). Conclusions Subclinical hypothyroidism had no significant influence on pregnancy outcomes and perinatal events. Thyroxine replacement in subclinical hypothyroidism pregnant women also had no significant influence on pregnancy outcomes and perinatal events.

Objective: To explore the association between different family factors and children’s puberty timing, and to provide a reference for further research on puberty development of children. Methods: A prospective cohort study was conducted on a total of 1 237 children in one district, Chongqing, using targeted sampling. Cox regression was used to analyze the association between family factors and the puberty timing of children. Results: The results of univariate analysis showed that baseline age and BMI were risk factors of early puberty timing in boys and girls (P<0.01). Breast development (HR=1.27, 95%CI=1.04-1.54) was observed earlier in vaginal delivery than in cesarean section. Self-conscious family economic condition is good is the protective factor for the early timing of girl’s menstruation (HR=0.81, 95%CI=0.66-0.99), pubic hair development(HR=0.80, 95%CI=0.65-0.97) and the boy’s puberty development (Testicular development HR=0.69, 95%CI=0.58-0.83, first ejaculation HR=0.62, 95%CI=0.49-0.78, external genitalia development HR=0.70, 95%CI=0.56-0.87, pubic hair development HR=0.66, 95%CI=0.54-0.80). The left-behind boys later observed testicular development (HR=0.74, 95%CI=0.57-0.96), first ejaculation (HR=0.71, 95%CI=0.50-0.99) and pubic hair development (HR=0.68, 95%CI=0.51-0.91). Testicular development (HR=1.26, 95%CI=1.01-1.58) was observed earlier in boys who felt their parents were close (P<0.05). The results of multivariate analysis showed that the timing of pubic hair development was later in floating girls (HR=0.79, 95%CI=0.65-0.96), and family factors had nothing to do with the puberty timing in boys. Conclusion In the study, left behind children, self-perceived of parents relationship and family economic conditions are the influencing factors of children’s puberty timing. However, after adjusted for age and BMI, this association was mainly found in pubic hair of girls. The association between family factors and other pubertal development events still needs to be confirmed by further follow-up investigation.

Objective: To analyze the characteristics of puberty growth of boys and to explore the relationship between puberty growth and sexual development of boys. Methods: Pubertal development of boys from grade 1 to grade 4 in Jiulongpo district of Chongqing was followed up once every six months. The data of height, weight, BMI, the age of first ejaculation and testicular development of boys from baseline to follow-up every 6 months for 5 years were analyzed. Based on peak height velocity (PHV), the average level of PHV and age at peak height velocity(PHA) were analyzed. ANOVA was used to compare the height growth rate of boys in different age groups before and after the first ejaculation. Kendall rank correlation was used to analyze the relationship between different stages of testicular development and BMI. Results: The mean age of PHA was (11.72±1.03) years in adolescent height speed cohort, and the mean age of first ejaculation was (12.45±0.98) years before and after the first ejaculation cohort. There was significant difference in the increment of height before and after one year of the age of first ejaculation (P<0.05), the younger the age of the first ejaculation, the greater increase of height in the following year. The height, weight, BMI of boys aged 11 to 14 years were positively correlated with testicular volume(P<0.05). Conclusion The height growth of boys reached its peak one year before the first ejaculation, and began to decrease after first ejaculation, and the age of the first ejaculation of boys was negatively correlated with the increment of height in the following year, while the testicular development of boys was positively correlated with height, weight and BMI.

Objective: Longitudinal data were used in this study to examine the predictive effects of psychological stress in early puberty on subsequent anxiety and depression symptoms. Methods: Objects from a puberty cohort of 998 children from 4 primary schools in Chongqing were included. Psychological stress was measured during their early puberty, and anxiety and depression were followed up after 4 years. Multiple linear regression was used to analyze the influence of psychological stress on anxiety and depression level in their middle puberty. Results: The average score of psychological stress during early puberty was (34.79±24.78), and scores of anxiety and depression were (11.20±10.89) and (12.06±6.69), respectively, with detection rates of 14.03% and 15.63%. Girls had higher anxiety and depression scores than boys(F=51.58,5.48，P<0.05). The depression scores of children with different parents’ educational levelsand perceived parental relationship were different(F=6.74, 7.38, 10.49, P<0.05). The results of multiple linear regression showed that girls(β=4.38), higher psychological stress(β=0.13), older age (β=0.89) were risk factors for higher anxiety level. Children with higher psychological stress(β=0.05), older age(β=0.57), perceived worse parents’ relationship(β=1.19), lower maternal education (β=-1.00) had higher depression scores(P<0.05). Conclusion The psychological stress level, and age during early puberty had a positive predictive effect on anxiety and depression after 4 years. Simultaneously, girls were more prone to anxiety, and poor parental relationship and low maternal literacy were risk factors for children’s depression.