Placentation,which is critical for maternal-fetal exchange of nutrients and gases,is a complicated process comprising stepwise vasculogenesis and angiogenesis.Hypoxia caused by impairedtrophoblast invasion may cause various angiogenic abnormalities in human placenta.The Notchl signaling pathway plays an important role in the regulation of angiogenesis.The angiogenesis of human umbilical vein endothelial cells (HUVECs) under normal/hypoxic conditions and the mRNA/protein level of Notchl/Dell4/Jaggedl were investigated in this study.The effects of DAPT/JAG-1 on the migration of HUVECs were also assessed by cell wound healing assay,so as to discover the possible role of notchl signaling pathway in the angiogenesis of human placenta.The results showed that angiogenic ability of HUVECs was seriously reduced under hypoxic conditions.The mRNA and protein levels of Notchl/Dell4/Jaggedl were decreased in the hypoxic group compared to the control one.In addition,the migration capability of HUVECs was significantly obstructed when treated with DAPT and under hopoxic condition,but promoted when treated with JAG-1.The above results demonstrate that hypoxia downregulates the angiogenesis in human placenta via Notch 1 signaling pathway.

Objective To explore into the condition of fluoride content of the drinking water and the present status of water-improving projects in the endemic fluomsis areas in Shanxi province,and to provide the evidence for making scientific and effective tactics in prevention and control.Methods In 2007,according to "The National Technical Scheme for Endemic Disease Control",screening for drinking water fluoride content was carried out in non-improving water villages of 15 counties(cities,districts).The investigation of all water-improving projects was carried out in 10 counties(cities).The fluoride content in drinking water was determined by fluoride selective ion electrode(GB/T 8538-1995).Results Screening for drinking water fluoride content was carried out in 969 non-improving water villages in 15 counties(cities,districts).Average water fluoride content was≤1.0 mg/L in 497 villages,accounting for 51.29%(497/969).Average water fluoride content was>1.0 mg/L in 472 villages.accounting for 48.71%(472/969).The overall standard drinking water fluoride content was mainlv>1.0-4.0mg/L,and the maximum average water fluoride content was 8.96 mg/L.The investigation of 290 water-improving projects was carried out in 10 counties(cities).Among 290 water-improving projects 213 water-improving projects were running normally,accounting for 73.45%(213/290);77 water-improving projects were running abnormally,accounting for 26.55%(77/290).Water fluoride content was≤1.0 mg/L in 158 projects,accounting for 54.48%(158/290).Water fluoride content was>1.0 mg/L in 132 projects,accounting for 45.52%(132/290).The maximal water fluoride content was 5.20 mg/L.Conclusions The situation of drinking water fluoride content over the national standard is serious in Shanxi province.The qualification rate was lower for the fluoride content of water-improving projects.Therefore,we should strength water-improving projects to raise the effectiveness of prevention and treatment and assure their quality.

OBJECTIVETo explore effect of interleukin 10 (IL-10) gene-modified bone marrow-derived liver stem cells (BDLSCs) transplantation on hepatic inflammatory response and liver regeneration in rats with liver fibrosis.

METHODS50 female Wistar rats were randomly divided into 4 groups: (1) control group: 10 rats were subcutaneously injected with olive oil for 8 weeks; (2) fibrosis groups: 16 rats were subcutaneously injected with carbon tetrachloride (CCl4) for 8 weeks to induce liver fibrosis; (3) BDLSC group: 12 rats were subcutaneously injected with CCl4 for 8 weeks, and were transplanted with 2 x 10(5) BDLSC at week 4; (4) BDLSC/IL-10 group: 12 rats were subcutaneously injected with CCl4 for 8 weeks, and were transplanted with 2 x 10(5) IL-10 gene-modified BDLSC at week 4. IL-10 and tumor necrosis factor alpha (TNFa) in liver tissues were detected by ELISA. HE stained liver tissues were observed under light microscope. The expression of hepatocyte growth factor (HGF) was quantified by real-time RT-PCR, and the expression of proliferating cell nuclear antigen (PCNA) was determined by immunohistochemistry.

RESULTSThe ratio of IL-10/TNFa in fibrosis group (0.05+/-0.01) was lower than that in control group (0.26+/-0.04) (P < 0.01). Transplantation of untreated BDLSCs did not improve the ratio (P > 0.05), however, transplantation of IL-10 modified BDLSCs improved the ratio significantly (P < 0.01). Severe inflammatory response and fibrosis were observed in fibrosis group. Inflammatory response was alleviated to some extent in the BDLSC group, and the histopathology of BDLSC/IL-10 group was not significantly different from that of the control group. Compared to the control group, the expression of HGF mRNA and PCNA protein was increased in the fibrosis group (P < 0.01). The expression of HGF and PCNA was further increased by BDLSCs or IL-10 modified BDLSCs transplantation. Compared to BDLSCs, IL-10 gene-modified BDLSCs were more potent to induce the expression of HGF and PCNA.

CONCLUSIONTransplantation of IL-10 gene-modified BDLSCs can alleviate hepatic inflammatory response and promote liver regeneration in hepatic fibrosis rats.

Adenoviridae ; genetics ; Animals ; Bone Marrow Cells ; cytology ; Cell Proliferation ; Disease Models, Animal ; Female ; Genetic Therapy ; methods ; Hepatocyte Growth Factor ; genetics ; metabolism ; Immunohistochemistry ; Interleukin-10 ; genetics ; Liver ; metabolism ; pathology ; Liver Cirrhosis ; genetics ; pathology ; therapy ; Liver Regeneration ; RNA, Messenger ; genetics ; metabolism ; Rats ; Rats, Wistar ; Reverse Transcriptase Polymerase Chain Reaction ; Stem Cell Transplantation ; methods ; Transduction, Genetic ; Tumor Necrosis Factor-alpha ; metabolism

Factor VII Deficiency ; diagnosis ; genetics ; Female ; Humans ; Middle Aged ; Pedigree ; Phenotype

Adult ; Cause of Death ; China ; epidemiology ; Embolism, Amniotic Fluid ; mortality ; Female ; Humans ; Maternal Mortality ; Postpartum Hemorrhage ; mortality ; Pre-Eclampsia ; mortality ; Pregnancy

Objectives:To construct a fraud risk prediction model for basic medical insurance holders, discover the main characteristics of fraud,and then establish a risk assessment index system to provide decision support for an apposite supervision of medical insurance funds. Methods : Using the large-scale real data including more than 183 million records of basic medical insurance diagnosis and treatment in China,the integrated risk assessment model for basic medical insurance holders is constructed using XGBoost algorithm and EasyEnsemble method. On this basis, this paper further identifies and quantifies the potential characteristics of fraud enforcement, and thus constructs a fraud risk assessment index system. Results : The proposed integrated model predicted the fraud risk with the accuracy of 83％,balance predictive value of 95％,and the balance sensitivity was 85％,respectively. Most importantly, the probability of the insured fraud being correctly evaluated was 82％ in this fraud risk assessment model. Besides, the amount of various expenses incurred at each stage of assessment,and the number of various types of projects are important indicators to distinguish the fraud from the normal insurance holders. Conclusions : The fraud risk assessment index system constructed based on the XGBoost integrated model is effective for the identification of potential fraudsters among the basic medical insurance holders. Establishing a risk assessment index system and developing an apposite supervision system based on big data of medical insurance play an essential role in improving the level of medical insurance management services,which ensures the safety of medical insurance funds,and safeguards the social health insurance fairness.

Objective To become aware of the present distribution of drinking water source with high fluoride in endemic fluorosis disease areas in Shanxi Province, and to provide the evidence for making scientific and effective tactics in prevention and control. Methods According to "The National Technical Scheme for Endemic Disease Control" in the year 2004 to 2006, the investigation points were selected in 60 counties at 8 cities of Shanxi Province. The fluoride levels of water were determined by fluoride selective ion electrode. Results The fluoride content of water was determined in 2990 villages in 60 counties. Water fluorides content of 1658 villages were above 1.00 mg/L, accounted for 55.45%(1658/2990). The highest water fluoride content was 9.72 mg/L. Villages with high fluoride water in Taiyuan, Datong, Xinding, Linfen, Yuncheng basins accounted for 89.63% (1486/1658) among villages with high fluoride in Shanxi Province. In Shanxi Province the villages with high fluoride water were mainly distributed over 5 basins and scattered on the other areas. The distribution of drinking water source with high fluoride were different in 5 basins(H=316.10, P<0.05). The Water fluorides content in Datong basin(2.32 mg/L) was significantly higher than that of the other basins (P<0.05) and the ratio of drinking water fluoride levels under the national standard was 81.16%(336/414) in Datong basin. Conclusions Drinking water source with high fluoride are widespread distributed in Shanxi Province and mainly distributed in 5 basins. The situation of drinking water fluoride levels under the national standard is serious. The task of prevention and control for endemic fluorosis is still arduous. Therefore, we should strength water improving to raise the effect of prevention and treatment.

OBJECTIVETo explore the level and feature of neonate deformity in water arsenic exposure areas, as to finding out an evidence for the study and prevention of the arsenic exposure.

METHODSThe birth situation of neonate was surveyed from 1998 to 2004 in water arsenic exposure areas according to cross-sectional survey. The results were classified in accordance with ICD-10 and common surveillance of china. The population of Shanyin County served as the common people and the data were analyzed by SPSS 11.5 for windows.

RESULTSThe neonates surveyed were 2467 cases. There were 49 neonates deformity found in this investigation, giving a neonate deformity rate of 198.62 per 10,000 cases, which was shown significantly higher in water arsenic exposure areas than in the normal (U = 3.23, P < 0.01), with types of nervous system deformity, limbs deformity and congenital heart disease as in system classification. There was no significant difference of deformity rate in different sex neonates (chi2 = 0.32, P > 0.05).

CONCLUSIONThe drinking high-arsenic water over a long period of time should be a risk factor of neonate deformity. Prevention and treatment of endemic arsenic exposure should be urgently needed.

Arsenic ; analysis ; Arsenic Poisoning ; complications ; epidemiology ; Congenital Abnormalities ; epidemiology ; etiology ; Cross-Sectional Studies ; Environmental Exposure ; analysis ; Female ; Humans ; Infant, Newborn ; Male ; Water ; analysis ; Water Pollutants, Chemical ; analysis ; Water Supply ; analysis

OBJECTIVETo investigate the occupational stressors and modifiers of pediatricians and nurses in order to find the measurements for control of the job stress.

METHODS427 pediatricians and nurses working in five hospitals of a city served as subjects. Of them, the staff in section of pharmacy and toll offices in each hospital mentioned above served as control group. The General Job Stress Questionnaire was used to investigate the job stress by self-assessment.

RESULTSThe scores of job demand, job risk, drug using, daily job stress, positive feelings, patient A behavior, physical environment and feeling balance in pediatricians and nurses were higher than those of control group, but the scores of job-person conflict, environmental control, technology utility, mental health, responsibility on things were lower than those of control group (P<0.05). The points of job future, job locus of control, self-esteem, job satisfaction, job load variance, depression in nurses were higher than those of pediatricians, and non-work activities, job risk and daily life stress were lower than those of doctors (P<0.05). The main affecting factors on job strain of pediatric staff included job monotony, higher job demand, more non-work job, lower job control, more job risk, job future ambiguous, poorer social support, lower job locus control and lower self-esteem.

CONCLUSIONThe stress degree of pediatric staff is higher than that of controls. The pediatricians have more job stress than that of nurses. The main stressors of pediatric staff are job monotony, higher job demand, more non-worker activity, lower job control, higher job risk and ambiguous job future. The main modifiers are good social support, external job locus of control and higher self-esteem.

Adult ; Burnout, Professional ; Female ; Humans ; Male ; Medical Staff, Hospital ; psychology ; Nursing Staff, Hospital ; psychology ; Pediatrics ; Surveys and Questionnaires ; Young Adult

OBJECTIVETo provide the basis for AIDS intervention, the study on the relationship between AIDS related risk behaviors and the related factors was carried out among prostitutes, injection drug users and long-distance truck drivers.

METHODSQuestionnaire investigation and statistical analysis as chi(2) test, F test, logistic regression were adopted to analysis the relationship between AIDS related risk behaviors and the correlated factors.

RESULTSKnowledge about AIDS seemed to be related to their level of understanding the problem (in commercial sex workers r = 0.307, P = 0.000, in injection drug users F = 93.07, P = 0.000, in truck man F = 30.06, P = 0.000). Condom use when entertaining their clients last time was related to the knowledge of HIV transmission in commercial sex workers and truck drivers (OR = 1.171, 1.145) and knowledge of HIV prevention (OR = 1.081, 1.397), in drug users regarding gender difference (OR = 2.121).

CONCLUSIONThis study addressed that the effective means to reduce the rate of AIDS risk behaviors and to lessen the harm of AIDS are to improve the knowledge of AIDS and the effective methods to prevent AIDS in the high risk population.

Acquired Immunodeficiency Syndrome ; prevention & control ; Automobile Driving ; China ; Health Education ; Humans ; Risk-Taking ; Sex Work ; Substance-Related Disorders ; Surveys and Questionnaires