Objective To determine the clinical value of hysteroscopy technology in high risk planned abortion. Methods A retrospective study of clinical manifestation, medical tests, treatment methods and effects of 97 cases (hospitalized from June, 2013 to October 2014) was made in the research. Of the 97 cases, 53 underwent UAE, and 44 did not undergo UAE. The risk factors and treatment features were concluded. Results The hemorrhage risk relates to menopause period. The longer menopause period, the higher the hemorrhage risk will be. The hemorrhage risk has nothing to do with HCG. For those whose menopause is less than 56 days, hemorrhage risk showed no difference between groups with or without UAE. For those whose menopause is less than 56 days, hemorrhage risk decreases in group with UAE. Hemorrhage risk and hysterectomy possibility are higher if menopause has happened for more than 11 weeks. Conclusion Cesarean scar pregnancy needs to be detected and treated early, in this way, the possibility for complications can be lowered. For cases whose menopause has been more than e weeks, hemorrhage risk should be cautioned.

Objective:To analyze the result of smooth pursuit test(SPT) in unilateral vestibular peripheral vertigo and investigate its influencing factors.Method:Smooth pursuit test (SPT) and spontaneous nystagmus (SN)were examined in one hundred and eighty-five patients with unilateral peripheral vertigo(case group) and 51 normal persons(control group) by Video-Nystagmography (Synapsys, France), and the gain of SPT and SN were selected as the observation parameters in order to analyze the waveform and gain of SPT and the relativity between SN and the gain of SPT.Result:Of the 185 patients, 105(56.8%),72(38.9%) and 8(4.3%) cases producedⅠ,Ⅱ and Ⅲ waveforms respectively. Of these patients, 58(31.4%) demonstrated SN and none had Ⅳ waveform. While of 51 normal persons, 38(74.5%), 13(25.5%) persons producedⅠand Ⅱwaveforms repectively and there were no Ⅲ, Ⅳ waveforms or SN. There was statistical significance between the stong and weak gain of SPT in these two groups. Weak gain was significantly different between two groups. The stong and weak gain of SPT in case group were 0.86±0.06,0.80±0.06; 0.78±0.09, 0.65±0.1; 0.68±0.13, 0.45±0.12. The relativity between SN and the gain of SPT was positive when they had same direction(r_s=-0.63,P＜0.05)and negative when opposite (r_s=0.34,P＜0.05).Conclusion:Ⅰ,Ⅱ,Ⅲ three waveforms of SPT could appear in unilateral vestibular peripheral vertigo and the corresponding gains are gradually decreasing.SN is the influencing factor of SPT.

In this cross-sectional survey,2 682 traffic policemen in Tianjin were enrolled,and they were tested with Occupational Stress Inventory-Revised (OSI-R) and Symptom Checklist 90 (SCL-90).Body mass index,blood pressure,fasting blood glucose,triglycerides,and high-density lipoprotein-cholesterol ( HDL-C ) were also determined at the same time. Correlation analysis showed that body mass index was positively correlated with somatization ( r =0.039,P =0.045 ),hostility ( r =0.046,P =0.01 8 ),and psychoticism ( r =0.041,P =0.036).Systolic blood pressure was positively correlated to somatization (r =0.056,P =0.004 ),obsessive-compulsiveness ( r =0.044,P =0.023 ),interpersonal sensitivity ( r =0.041,P =0.034 ),depression ( r =0.039,P =0.043),anxiety ( r =0.055,P =0.004 ),and psychoticism ( r =0.051,P =0.009 ).Diastolic blood pressure was positively correlated to somatization ( r =0.047,P =0.015 ),interpersonal sensitivity ( r =0.042,P =0.030 ),anxiety ( r =0.050,P =0.010 ),and psychoticism ( r =0.047,P =0.014 ).Fasting blood glucose was positively correlated to somatization ( r=0.042,P=0.028 ).Multiple regression analysis showed that occupational stress factors were role boundary,physical environment,responsibility,recreation,role ambiguity,role overload,and cognitive coping.Among these factors,role ambiguity and cognitive coping reduced occupational stress while others increased the stress.The results of the unconditional logistical regression analysis showed that there is an independent association of metabolic syndrome with somatization,role insufficiency,and physical strain for the task and body tension ( P＜0.01).

Background Epidemiological investigation showed that 15％-29％ of patients with cataract have preexisting astigmatism of ＞ 1.50 D.So to control astigmatism is very important to the improvement of visual function after cataract surgery.The implantation of Toric intraocular lens (IOL) is a new option for the correction of preexisting astigmatism during cataract surgery,now.Short-term clinical studies of cataract patients with AcrySof Toric IOL implantation have revealed a good stability.However,the evaluation of long-term clinical result is seldom.Objective This study was to evaluate the long-term clinical results of Toric intraocular lens(IOL) implantation.Methods A serial case-observational study was designed.One hundred and twenty eyes of 78 cataract patients were included in this study.Phacoemulsification combined with AcrySof Toric IOL implantation was performed and the patients received a 2-year follow-up.Uncorrected distance visual acuity (UCDVA),best corrected distance visual acuity(BCDVA),residual cylinder,IOL rotation,vector analysis and accuracy of astigmatic correction were clinically evaluated in 1 day,1 month,3 months,6 months,1 year and 2 years,respectively.Comparison of these results of different follow-up periods were made.Results Sixty-seven patients (101 eyes)finished the follow-up and 19patients(19 eyes)lost visit due to other diseases affected.At 2 years visit after AcrySof SN60TT implantation,UCDVA,BCDVA,residual cylinder,absolute value of IOL rotation degree,vector magnitude of surgically induced astigmatism (SIA) was 0.16 (0.20),0 (0.1),0.75 (0.5) D,(2.9± 1.8) °,(1.2 ± 0.6) D,and the correction index (CI)was 0.90±0.41.A positive correlation was found between SIA and TIA(r=0.74,P =0.000).Compared to 1 month,3,6 months and 1 year,there was a mild tendency of decrease in accuracy of astigmatism correction and CI.Residual cylinder and degree of IOL rotation at 2 years after surgery were also slightly higher.However these changes were not statistically significant (P＞0.05).Conclusions After 2 years of follow-up,patients with AcrySof Toric implantation remain good visual acuity.AcrySof Toric IOL presents excellent long-term rotational stability and accuracy of astigmatism correction.

Objective To express EV71 VP1 in prokaryotic expression system,initially evaluate the ability of blocking EV71 infection and the neutralizing activity of its polyclonal antibody.Methods Construct the prokaryotic expression plasmid pET30a (+)-VP1.Induced expression in Transetta (DE3) with IPTG and identified by Western blot.After purified with HisBind Protein Purification Kit,its ability of blocking EV71 infection and the neutralizing activity of its polyclonal antibody were analyzed.Results Plasmid PET-30a(+)-VPI was constructed successfully and the objective protein was expressed effectively.The ELISA titer of the polyclonal antibody was 1:3200 while neutralizing titer was 1:16 and the recombination protein lost the ability of blocking EV71 infection.Conclusion The recombination protein can stimulate mice to produce antibodies and the polyclonal antibody shew neutralizing activity but the recombination protein lost the binding activity to receptors probably due to the wrong advanced structure.

In this study, we designed and synthesized 12 novel aloperine derivatives with different core structures. Among them, compound 3 with a ten-membered ring core was obtained through a special ring expansion reaction after γ-H Huffman elimination of quaternary ammonium salt, and the structure was verified by X-single crystal diffraction. Furthermore, their antiviral activity against human β-coronavirus HCoV-OC43 was evaluated by CCK-8 assay. Quaternary ammonium salt 2a and 3 had a good inhibitory effect against HCoV-OC43, and 2a had the highest anti-HCoV-OC43 activity with an EC₅₀ values of 3.77 μmol·L^-1 and a SI value of over 53.1. Schrӧdinger molecular docking results showed that both 2a and 3 might display their anti-HCoV-OC43 activity by directly acting on host TMPRSS2 and SR-B1. The results expanded the structural types of endocyclic aloperine and the function against coronavirus, and provided useful scientific data for the development of pharmaceutical applications of these compounds.

Objective Increasing evidence suggest that aberrant activation of PI3K/Akt is involved in many human cancers, and that inhibition of the PI3K/Akt pathway might be a promising strategy for cancer therapy. The study is to evaluate the effects of combined therapy of PI3K inhibitor (LY294002) and Ad-PTEN in athymic mice xenogeneic transplant model of human glioma and to reveal the possible mechanisms involved.Methods Twenty-four athymic mice were randomly divided into 4 groups (DMSO、Ad-vector plus DMSO、LY294002 alone and Ad-PTEN plus LY294002), and were treated, respectively. Athymic mice xenogeneic transplant model was established by inoculation (sc) with LN229 glioma cells. Body mass (BM) and diameter of tumor mass were measured. Furthermore, The protein expressions of PTEN、p-Akt、CyclinD1、Caspase-3、MMP-2、p-FAK in tumor tissues were analyzed with immunohistochemistry.Results The tumor-inhibiting rate of was significantly higher in Ad-PTEN plus LY294002 than in the LY294002 alone (92.46 vs 65.59%)( P <0.05).The protein expressions of PTEN and Caspase-3 were significantly higher, while PCNA、CyclinD1、bcl-2 and MMP-2、p-FAK was significantly lower in Ad-PTEN plus LY294002 group than in the other three groups ( P <0.05).Conclusions LY294002 plus Ad-PTEN achieve better outcome than either alone in treating glioma possibly through enhancement of the inhibitory action of PI3K/Akt pathway and Ad-PTEN pathway.

OBJECTIVETo study the genotoxicity of components of diesel engine exhausts with ethanol-diesel blending fuel. To provide scientific arguments to find more economical and less polluted fuels.

METHODSAmes test, comet assay and GC-MS technique were used to test the genotoxicity and 16 kinds of PAHs on diesel engine exhausts with different proportions of ethanol (E0, E5, E10, E20).

RESULTSBoth Ames test and comet assay were positive. It shows that diesel engine exhausts can lead to mutation and DNA damage, especially in pure diesel oil. But the content of 16 kinds of PAHs and DNA damage level decreased in exhausts of E5. With the increase of ethanol proportion in diesel oil, the content of 16 kinds of PAHs and DNA damage level increased.

CONCLUSIONCompared with pure diesel oil and high proportion of ethanol fuel, E5 can reduce the genotoxicity and the brake specific exhausts of PAHs.

Air Pollutants ; toxicity ; Air Pollution ; Carbon Monoxide ; Comet Assay ; DNA Damage ; Ethanol ; toxicity ; Gasoline ; toxicity ; Mutagenicity Tests ; Particulate Matter ; Vehicle Emissions ; toxicity

In order to reveal genetic diversity of domestic Andrographis paniculata and its impact on quality, genetic backgrounds of 103 samples from 7 provinces in China were analyzed using SRAP marker and SNP marker. Genetic structures of the A. paniculata populations were estimated with Powermarker V 3.25 and Mega 6.0 software, and polymorphic SNPs were identified with CodonCode Aligner software. The results showed that the genetic distances of domestic A. paniculata germplasm ranged from 0. 01 to 0.09, and no polymorphic SNPs were discovered in coding sequence fragments of ent-copalyl diphosphate synthase. A. paniculata germplasm from various regions in China had poor genetic diversity. This phenomenon was closely related to strict self-fertilization and earlier introduction from the same origin. Therefore, genetic background had little impact on variable qualities of A. paniculata in domestic market. Mutation breeding, polyploid breeding and molecular breeding were proposed as promising strategies in germplasm innovation.
Andrographis ; classification ; genetics ; China ; Genetic Variation ; Phylogeny ; Polymorphism, Single Nucleotide

This study was aimed to investigate the immunological effect of modified dendritic cells (DC) which inducing cytotoxic T cells (CTL) against lymphoma cells. The DC were isolated from the lymph node and peripheral blood of patients with diffuse large B cell lymphoma (DLBCL). DC were transfected with recombinant adenovirus vector carrying human p53 gene (rAd-p53-DC). The expression of p53 gene was detected by flow cytometry. Western-blot was used to detect the expression of P53. ELISA was used to detect IL-12 level in supernatant. The mixed lymphocyte reaction (MLR) was used to detect the proliferative ability of auto-lymphocyte stimulated by DC. The lactate dehydrogenase (LDH) release test was used to determine the cytotoxicity of CTL. The results indicates that the expressions of DC surface molecule (except for CD1a) such as CD83, CD80, CD86 and HLA-DR were significantly higher in experiment group than that in control group and blank control group. The secretion of IL-12 in supernatant was higher in experiment group than that in control group. The autologous T lymphocyte proliferation and cytotoxic activity against the same kind of DLBL-cells increased in experiment group as compared with control group and blank control group (P < 0.05). The ability to stimulate T lymphocyte proliferation increased with the rising of the ratio of DC and T lymphocyte. However, there was statistically significant difference between rAd-p53-DC derived from Lymph node and peripheral blood (P < 0.05). It is concluded that rAd-p53-transfected DC can induce CTL response in vitro against lymphoma cells.
Adenoviridae ; Cell Line, Tumor ; Dendritic Cells ; cytology ; immunology ; Genes, p53 ; Genetic Vectors ; Humans ; Lymphocyte Activation ; Lymphocyte Culture Test, Mixed ; Lymphoma, Large B-Cell, Diffuse ; blood ; immunology ; Transfection