This paper introduces a first-aid system in allusion to cardiopathy patient based on mobile communication networks.It samples ECG data of the patient by mobile instrument and sends them to the nearest hospital.According to the data,doctors draw a treat plan and prepare for the treatment.Further more,this system can be used for the custody of the illness.

Objective To investigate the effect of transurethral holmium YAG laser in treatment of bladder calculi.Methods F5 laser fiber in the holmium YAG laser was used to treat 40 patients with bladder calculi.Then the effect was observed.Results All 40 cases were successfully done by the operation time range from 15 to 120 minutes.There were no major complications,such as TRUS,bladder rupture or major bleeding.There was no residue stone.Conclusion F5 laser fiber in the holmium YAG laser treatment could be protected by the transurethral scope.It was safe,effective and has shorter operation time in treatment of bladder calculi.

15 rat dams were divided into 2 groups: selenium treated group drank water containing 2 ppm selenium during pregnancy and breast-feeding period, control group drank tap water. The concentration of selenium in brain tissue for dams were 0.73 ?0.11 (Se-treated) and 0.54 ?0.09 ug/g wet tissue (control), for neonates 0.32?0.02 (Se-treated) and 0.25 ? 0.03 (control), and for 20 days old pups 0.53?0.04 (Se-treated) and 0.44?0.06 (control). The results showed that the selenium administered orally could be transfered through placenta or blood-brain barrier of fetus, young pup and adult rat.

Background: Dust generated during the processing of building materials enterprises can pose a serious health risk. The study aimed to compare and analyze the results of ART and the Monte Carlo model for the dust exposure assessment in building materials enterprises, to derive the application scope of the two models. Methods: First, ART and the Monte Carlo model were used to assess the exposure to dust in each of the 15 building materials enterprises. Then, a comparative analysis of the exposure assessment results was conducted. Finally, the model factors were analyzed using correlation analysis and the scope of application of the models was determined. Results: The results show that ART is mainly influenced by four factors, namely, localized controls, segregation, dispersion, surface contamination, and fugitive emissions, and applies to scenarios where the workplace information of the building materials enterprises is specific and the average dust concentration is greater than or equal to 1.5 mg/m3. The Monte Carlo model is mainly influenced by the dust concentration in the workplace of building materials enterprises and is suitable for scenarios where the dust concentration in the workplace of the building materials enterprises is relatively uniform and the average dust concentration is less than or equal to 6mg/m3. Conclusion ART is most accurate when workplace information is specific and average dust concentration is > 1.5 mg/m3; whereas, The Monte Carlo model is the best when dust concentration is homogeneous and average dust concentration is < 6 mg/m3.

Objective: To investigate the association of ambient fine particulate matters (PM_2.5) exposure with anxiety in middle-aged and elderly people in China. Methods: Using a stratified random sampling method, 5 997 middle-aged and elderly people (aged 40-89) who resided in the region for more than 2 years and had no hearing or language impairment were selected from 32 districts/counties in the key areas for air pollution prevention and control in China from October 10^th, 2017 to February 7^th, 2018. Information about demographic characteristics, socioeconomic factors and health status were collected by questionnaire survey and physical examination. The anxiety symptoms were assessed by 7-item Generalized Anxiety Disorder Scales. Three-year moving average concentrations of PM_2.5 were calculated to estimate exposure level. The multivariate logistic regression model was conducted to assess the association between PM_2.5 exposure and anxiety. The interaction of age, gender, overweight, education, smoking, drinking and chronic diseases was also analyzed by likelihood ratio test. Results: There were 2 995 (49.94%) males subjects, 4 092 (68.23%) subjects with education of secondary school or above and 2 576 (42.95%) subjects with self-reported chronic diseases among the 5 997 middle-aged and elder participants. The prevalence of anxiety was 6.64% (n=398). The mean±SD of 3-year moving average concentrations of PM_2.5, O₃ and SO₂ were (53.50±13.38), (90.58±13.26) and (40.29±12.56) μg/m³, respectively. PM_2.5 had significantly association with anxiety, and the corresponding OR value was 1.17 (95%CI: 1.05,1.31) with a 10 μg/m³ increment of 3-year moving average concentrations of PM_2.5. Compared with female (OR (95%CI)=1.07 (0.93,1.23)), those with no chronic diseases (OR (95%CI)=1.06 (0.93,1.20)) and those with primary school degree or below (OR (95% CI)=0.90 (0.75,1.09)), the association between PM_2.5 and anxiety was stronger among male (OR (95%CI)=1.35 (1.12,1.63)) and those with chronic diseases (OR (95%CI)=1.77 (1.31,2.38)), middle school education (OR (95%CI)=1.43 (1.22,1.67)), college education and above (OR (95%CI)=1.68 (1.05, 2.67)), all the P interaction values were <0.05. Conclusion PM_2.5 exposure has significantly positive association with anxiety. The associations are stronger in male, people with higher educational qualifications and patients with chronic diseases.

Objective:To discuss the effect of curcumin on the proliferation,migration,and invasion of the human prostate cancer C4-2 and LNCaP cells,and to clarify its possible mechanism.Methods:The lentiviral transfection system was used to transfect the C4-2 and LNCaP cells,regarded as shCD147-C4-2 group and shCD147-LNCaP group.RNA interference technology was used to prepare the CD147-silenced cells;the cells transfected with an empty vector were regarded as negative control and divided into shNC-C4-2 group(shNC-C4-2 cells)and shNC-LNCaP group(shNC-LNCaP cells).The C4-2 and LNCaP cells at logarithmic growth phase,as well as shCD147-C4-2 and shCD147-LNCaP cells,were treated with 20 μmol·L-1 curcumin.The morphology of the cells in various groups was observed under microscope at 0 and 24 h of treatment;MTT method was used to detect the proliferation activities of the cells in various groups;cell scratch assay was used to detect the migration rates of the cells in various groups;Western blotting method was used to detect the expression levels of apoptosis,invasion,and migration-related proteins in the cells in various groups.Results:Compared with C4-2 group,the expression of CD147 protein in the cells in shCD147-C4-2 group was significantly decreased after CD147 gene silenting.Compared with LNCaP group,the expression level of CD147 protein in the cells in shCD147-LNCaP group was significantly decreased after CD147 gene silenting.Compared with 0 h of treatment,some cells in C4-2 and LNCaP groups after 24 h of treatment with 20 μmol·L-1 curcumin,showed apoptosis signs with the presence of typical apoptotic bodies.The apoptotic phenomena in shCD147-C4-2 and shCD147-LNCaP groups was reduced.The MTT assay results showed that compared with C4-2+0 μmol·L-1 curcumin group,the proliferation activities of the cells in C4-2+20 μmol·L-1 curcumin group,C4-2+40 μmol·L-1 curcumin group,C4-2+60 μmol·L-1 curcumin group,and C4-2+80 μmol·L-1 curcumin group were decreased(P<0.01).Compared with LNCaP+0 μmol·L-1 curcumin group,the proliferation activity of the cells in LNCaP+20 μ mol·L-1 curcumin group,LNCaP+40 μmol·L-1 curcumin group,LNCaP+60 μmol·L-1 curcumin group,and LNCaP+80 μmol·L-1 curcumin group were decreased(P<0.01).Compared with shNC-C4-2 group,the proliferation activity of the cells in shNC-C4-2+20 μmol·L-1 curcumin group was decreased(P<0.01).Compared with shNC-C4-2+20 μmol·L-1 curcumin group,the proliferation activity of the cells in shCD147-C4-2+20 μmol·L-1 curcumin group was increased(P<0.01).Compared with shNC-LNCaP group,the proliferation activity of the cells in shNC-LNCaP+20 μmol·L-1 curcumin group was decreased(P<0.01);compared with shNC-LNCaP+20 μmol·L-1 curcumin group,the proliferation activity of the cells in shCD147-LNCaP+20 μmol·L-1 curcumin group was significantly increased(P<0.01).The cell scratch healing assay results showed that compared with C4-2 group,the migration rates of the cells in C4-2+20 μmol·L-1 curcumin group and C4-2+40 μmol·L-1 curcumin group after 24 h of treatment were decreased(P<0.01);compared with LNCaP group,the migration rates of the cells in LNCaP+20 μmol·L-1 curcumin group and LNCaP+40 μmol·L-1 curcumin group were increased(P<0.01);compared with shNC-C4-2 group,the migration rate of the cells in shNC-C4-2+20 μmol·L-1 curcumin group was decreased(P<0.01);compared with shNC-C4-2+20 μmol·L-1 curcumin group,the migration rate of the cells in shCD147-C4-2+20 μmol·L-1 curcumin group was significantly increased(P<0.05);compared with shNC-LNCaP group,the migration rate of the cells in shNC-LNCaP+20 μmol·L-1 curcumin group was decreased(P<0.01);compared with shNC-LNCaP+20 μmol·L-1 curcumin group,the garation rate of the cells in shCD147-LNCaP+20 μmol·L-1 curcumin group was significantly increased(P<0.05).The Western blotting results showed that compared with C4-2 group,the expression levels of Bcl-2-associated X protein(Bax),cleaved Caspase-3,and poly ADP-ribose polymerase 1(PARP1)proteins in the cells in C4-2+20 μmol·L-1 curcumin group and C4-2+40 μmol·L-1 curcumin group were significantly increased(P<0.01),and the expression levels of Bcl-2 protein was significantly decreased(P<0.05 or P<0.01);compared with LNCaP group,the expression levels of Bax,cleaved Caspase-3,and PARP1 proteins in the cells in LNCaP+20 μmol·L-1 curcumin group and LNCaP+40 μmol·L-1 curcumin group were significantly increased(P<0.01),and the expression level of Bcl-2 protein in the cells in LNCaP+40 μmol·L-1 curcumin group was decreased(P<0.01);compared with shNC-C4-2 group,the expression levels of Bax,cleaved Caspase-3,and PARP1 proteins in the cells in shNC-C4-2+20 μmol·L-1 curcumin group were significantly increased(P<0.05 or P<0.01),and the expression level of Bcl-2 protein was significantly decreased(P<0.05);compared with shNC-C4-2+20 μmol·L-1 curcumin group,the expression levels of Bax and cleaved Caspase-3 proteins in the cells in shCD147-C4-2+20 μmol·L-1 curcumin group were significantly decreased(P<0.01);compared with shNC-LNCaP group,the expression levels of Bax,cleaved Caspase-3,and PARP1 proteins in the cells in shNC-LNCaP+20 μmol·L-1 curcumin group were significantly increased(P<0.05 or P<0.01),and the expression level of Bcl-2 protein was significantly decreased(P<0.05);compared with shNC-LNCaP+20 μmol·L-1 curcumin group,the expression levels of Bax,cleaved Caspase-3,and PARP1 proteins in the cells in shCD147-LNCaP+20 μmol·L-1 curcumin group were significantly decreased(P<0.05 or P<0.01),and the expression level of Bcl-2 protein was significantly increased(P<0.05).Compared with C4-2 group,the expression levels of E-cadherin protein in the cells in C4-2+20 μmol·L-1 curcumin group and C4-2+40 μ mol·L-1 curcumin group were significantly increased(P<0.01),and the expression levels of N-cadherin and Vimentin proteins were significantly decreased(P<0.01);compared with LNCaP group,the expression levels of E-cadherin protein in the cells in LNCaP+20 μmol·L-1 curcumin group and LNCaP+40 μmol·L-1 curcumin group were significantly increased(P<0.01),and the expression levels of N-cadherin and Vimentin proteins in the cells in LNCaP+40 μmol·L-1 curcumin group were significantly decreased(P<0.01);compared with shNC-C4-2 group,the expression levels of N-cadherin and Vimentin proteins in the cells in shNC-C4-2+20 μmol·L-1 curcumin group were significantly decreased(P<0.01);compared with shNC-C4-2+20 μmol·L-1 curcumin group,the expression level of E-cadherin protein in the cells in shCD147-C4-2+20 μmol·L-1 curcumin group was significantly decreased(P<0.01),and the expression levels of N-cadherin and Vimentin proteins were significantly increased(P<0.01);compared with shNC-LNCaP group,the expression level of E-cadherin protein in the cells in shNC-LNCaP+20 μmol·L-1 curcumin group was significantly increased(P<0.01),and the expression levels of N-cadherin and Vimentin proteins were significantly decreased(P<0.01);compared with shNC-LNCaP+20 μmol·L-1 curcumin group,the expression level of E-cadherin protein in the cells in shCD147-LNCaP+20 μmol·L-1 curcumin group was significantly decreased(P<0.01),and the expression level of N-cadherin was significantly increased(P<0.05).Conclusion:Curcumin inhibits the proliferation,migration,and invasion of the prostate cancer cells in vitro and induces the apoptosis;silencing the CD147 gene partially reduces its inhibitory effect and its ability to induce the apoptosis.

The establishment of the endometrial receptive state,the implantation of activated blastocysts,and the decidualization of the uterine stroma are essential conditions for successful implantation in mammals and play decisive roles for subsequent pregnancy outcomes.The Wnt signaling pathway is associated with a variety of key functions such as proliferation,differentiation,apoptosis,and regeneration.During the embryo implantation,the Wnt signaling pathway plays an indispensable role.Studies have shown that the abnormal expression of Wnt signaling pathway can lead to endometriosis,endometrial cancer,and other reproductive diseases that seriously affect human health and quality of life.In this article we summarize the roles of Wnt signaling pathway in the establishment of uterine receptivity,blastocyst activation,embryo implantation,and decidualization and its regulatory mechanisms.

In recent years, the petroleum-based plastic pollution problem has been causing global attention. The idea of "degradation and up-cycling of plastics" was proposed for solving the environmental pollution caused by non-degradable plastics. Following this idea, plastics would be firstly degraded and then reconstructed. Polyhydroxyalkanoates (PHA) can be produced from the degraded plastic monomers as a choice to recycle among various plastics. PHA, a family of biopolyesters synthesized by many microbes, have attracted great interest in industrial, agricultural and medical sectors due to its biodegradability, biocompatibility, thermoplasticity and carbon neutrality. Moreover, the regulations on PHA monomer compositions, processing technology, and modification methods may further improve the material properties, making PHA a promising alternative to traditional plastics. Furthermore, the application of the "next-generation industrial biotechnology (NGIB)" utilizing extremophiles for PHA production is expected to enhance the PHA market competitiveness, promoting this environmentally friendly bio-based material to partially replace petroleum-based products, and achieve sustainable development with carbon-neutrality. This review summarizes the basic material properties, plastic upcycling via PHA biosynthesis, processing and modification methods of PHA, and biosynthesis of novel PHA.
Polyhydroxyalkanoates ; Plastics ; Biotechnology ; Petroleum ; Carbon