Objective To investigate the expression and correlation of hypoxia-inducible factor-1?(HIF-1?),vascular endothelial growth factor(VEGF)and sFlt-1 in the preeclampsia placenta,and discuss their significance in the pathogenesis of preeclampsia.Methods Placentas were collected from 20 pregnant women with preeclampsia as study group and 15 normal pregnant women as control group.The expressions of HIF-1?,VEGF and sFlt-1 protein were semi-quantitatively analyzed with immunohistochemical assay and mRNA level was determined using reverse transcription polymerasc chain reaction(RT-PCR)technique. Results(1)the expression of HIF-1?and sFlt-1 protein in preeclampsia group obviously increased.Strong (+++)positive expression was observed in 9 and 11 cases respectively,significantly higher than in control group(2 and 3 cases)(P＜0.05),however,VEGF expression obviously reduced in preeclampsia group(P＜0.01).(2)the level of HIF-1?and sFlt-1 mRNA in preeclamptic placenta was 0.604?0.013, 0.898?0.041,significantly higher than 0.208?0.007 and 0.559?0.244 in normal placenta(P＜0.05). Although the level of VEGF mRNA increased in preeclampsia placenta,it was not significantly different from that in normal placenta(P＞0.05).The ratio of VEGF mRNA/sFlt-1 mRNA obviously reduced in preeclampsia group and was significantly lower than in control group(P＜0.05).(3)in preeclampsia group,HIF-1?mRNA expression was positively correlated with the expression of sFlt-1 mRNA(r=0.577, P＜0.05),and negatively correlated with the ratio of VEGF mRNA/sFlt-1 mRNA(r=-0.376,P＜0.05).Conclusion Abnormal high HIF-1?expression in preeclampsia placenta indicates that HIF-1?might play an important role in the pathogenesis of preeclampsia,possibly through affecting the cytotrophoblastic invasion and placental vascular reconstruction via the modulation of VEGF and sFlt-1 gene transcription.

Adult ; Aged ; Coal Mining ; Health Promotion ; methods ; Humans ; Male ; Middle Aged ; Occupational Health ; statistics & numerical data ; Young Adult

ObjectiveTo investigate the diagnosis and treatment of hepatic venous outflow obstruction(HVOO) after pediatric liver transplantation.MethodsFrom Jan.2000 to Dec.2009,48 children received liver transplantation in the Department of Liver Transplantation,First Central Hospital,Tianjin.There were 3 patients who developed HVOO (2 received liver transplantation in our center,while the third from another centre).The HVOO was diagnosed by color Doppler ultrasound (CDUS),computed tomography (CT),and angiography of inferior vena cava (IVC).The patients received balloon dilation and/or stent placement and followed-up with regular monitoring.ResultsIn our center,the incidence rate of HVOO was 4.17％ (2/48).The time of onset was 2 months to 1 year postoperatively.The pressure gradient between the hepatic vein and the right atrium was from 6 to 30mmHg.After treatment,the venous pressure gradient decreased from 4 to 10mmHg.Resolution of clinical symptoms was achieved in these patients.HVOO relapsed in two patients who received balloon angioplasty only.The clinical symptoms were relieved after repeated balloon dilation in one and stent placement in the other.There were no further complications after these procedures.All patients were alive at a follow-up from 2 months to 9 years.ConclusionThe incidence of HVOO after pediatric liver transplantation was not high,but HVOO led to serious consequences.Balloon dilation and/or stent implantation were safe and efficacious treatments for HVOO after pediatric liver transplantation.

Objective The influenza monitoring results in Huzhou city were analyzed to understand the characteristics of influenza pandemic and to provide a scientific basis for prevention and control of influenza. Methods The influenza-like cases(ILI)were collected from two sentinel hospitals in Huzhou according to the protocol of The National Influenza Surveillance Program. Pharynx swab samples of the ILI were taken randomly for the test of influenza virus. Results Among 5 322 788 patients who went to the sentinel hospitals in Huzhou from 2011 to 2017, 185 010 were ILI. The percentage of ILI was 3.48% and there was a slowly rising trend in ILI% of month from 2011 to 2017(trend χ² = 2 970.93, P < 0.001). Winter /spring and summer seasons marked the peaks in influenza epidemics. Patients were mostly children under 14 years old(accounting for 89.1%). In a total of 11 490 throat swabs collected from ILI, 1 975 were tested to be positive for influenza virus(positive rate 17.19%). These included A type H3N2, 1 008; A type H1N1, 350; B type, 614(160 Victoria type, 238 Yamagata, 216 unclarified B type), and 3 mixed type. The correlation between positive rate of influenza nucleic acid test and ILI% is statistically significant(r = 0.40, P < 0.001). Conclusion The incidence peaks of influenza in Huzhou are mainly in the winter /spring and summer periods. The influenza is mainly occurs in young people under 14 years old and the main type virus is A(H3N2). The prevalence of influenza B and H1N1 occurs at intervals. There is a positive correlation between influenza activity and ILI%.

OBJECTIVETo explore the effect of terbutaline on sodium transport in rat alveolar type I (ATI) and type II (ATII) cells of rats.

METHODSThe whole cell currents were recorded from ATII cells isolated from rat lungs perfused with or without amiloride (inhibitor of epithelial sodium channel) and ZnCl(2) (inhibitor of cyclic nucleotide-gated cation channel) in the whole cell recording mode using the patch-clamp technique. The effect of terbutaline on the currents was examined.

RESULTSThe main currents recorded from ATII cells were amiloride-sensitive and Zn(2+)-sensitive. The amiloride-sensitive and Zn(2+)-sensitive current shared a similar proportion (P>0.05). Both currents could be significantly increased by terbutaline (P<0.05), and the proportion of amiloride-sensitive current was 1.7 times that of Zn(2+)-sensitive current (P<0.05).

CONCLUSIONThere are functional epithelial sodium channels (ENaC) and cyclic nucleotide-gated cation channels (CNG) on freshly isolated ATII cells, both serving as the main channels for sodium transport. Terbutaline increases the absorption of alveolar fluid primarily by increasing sodium transport of ENaC and CNG on ATI and AT II cells.

Amiloride ; pharmacology ; Animals ; Chlorides ; pharmacology ; Cyclic Nucleotide-Gated Cation Channels ; antagonists & inhibitors ; drug effects ; Male ; Peptides ; pharmacology ; Pulmonary Alveoli ; cytology ; metabolism ; Rats ; Rats, Sprague-Dawley ; Sodium ; metabolism ; Sodium Channels ; drug effects ; Terbutaline ; pharmacology ; Zinc Compounds ; pharmacology

Objective: To evaluate the impact of coronavirus disease 2019 ( COVID-19 ) prevention and control measures in Huzhou on influenza epidemic strength and characteristics in 2020, so as to provide reference for formulating influenza prevention measures. Methods: Using the influenza surveillance data of the national influenza sentinel surveillance system from January 2015 to July 2020, the seasonal characteristics of influenza epidemic were analyzed, the proportion of influenza-like illness cases ( ILI% ) and the positive rate of influenza virus in January to July of 2020 were compared with those of the same period in 2015-2019, in order to evaluate the impact of COVID-19 prevention and control measures. Results : The ILI% and the positive rate of influenza virus in Huzhou were 3.90% and 15.32% during 2015-2019, while were 4.41% and 12.63% from January to July of 2020. The trends of ILI% during 2015-2019 fluctuated similar, but continued to drop since January 2020. The positive rate of influenza virus peaked from December to March in 2015-2019, also peaked from December 2019 to January 2020, but decreased to 0 in March. ILI% was positively correlated with the positive rate of influenza virus ( r=0.682, P<0.05). The growth rates of ILI% from January to July 2020 were 4.75%, -11.27%, 0.68%, 19.84% and 0.92%, compared with the same period of 2015-2019, respectively. The growth rates of ILI% in January 2020 were much higher ( >57.00% ) and from April to July were much lower ( <-33.00% ) . The growth rates of influenza virus positive rate from January to July 2020 were -47.96%, -36.53%, -3.44%, -35.92% and -39.37%, compared to the same period of 2015-2019, respectively. The growth rates of influenza virus positive rate in January 2020 were much higher ( >11.00% ) and from February to March were much lower ( <-61.00% ). Conclusion Since COVID-19 prevention and control measures were implemented in January 2020 in Huzhou, the ILI% and the positive rate of influenza virus in sentinel hospitals decreased significantly.

OBJECTIVE: Using CO II sequences to identify common species of carrion-breeding flies and larvae. METHODS: flies and larvae were collected on the corpses of rats in Zhengzhou district, DNA was extracted, CO II sequences were amplified and sequenced. Clustalx and MEGA 4.0 software were used to analyze the gene sequences and to construct the phylogenetic trees. RESULTS: There was no significant gene difference between adults and larvae. COII gene sequences could be used to identify Boettcherisca peregrina, Aldrichina grahami and Lucilia illustris but they could not distinguish Lucilia cuprina from the Lucilia sericata because of their close evolutionary distance and single nucleotide polymorphisms in aldrichina grahami and Lucilia illustris populations were found. CONCLUSION CO II sequence of mtDNA in Zhengzhou district can be used effectively to identify some common species of carrion-breeding fly. The method is simple and accurate.
Animals ; Base Sequence ; China ; DNA Primers ; DNA, Mitochondrial/genetics* ; Diptera/genetics* ; Electron Transport Complex IV/genetics* ; Entomology ; Forensic Medicine/methods* ; Genes, Insect ; Larva/genetics* ; Phylogeny ; Polymerase Chain Reaction/methods* ; Rats ; Sequence Analysis, DNA ; Species Specificity

Cloning of differentially expressed genes is one of the hottest topics in biology.It is very important in cloning genes correlated with phenotype and diseases at molecular level.Here we utilized a simple and rapid PCR-based protocol to detect and isolate cDNA fragments from differentially expressed genes of IL-6-induccd and IL-6-uninduced U937 cells in tWO easy steps.To generate cDNAs from most mRNAs,the first step was reverse transcription using three fully degenerated 6-mer oligonucleotides as primers.The second step was PGR amplification of internal regions of the cDNAs with two or three longer primers with arbitrary but defined sequences.The PCR amplification was repeated on the same cDNA templates(first step) with different sets of primers.DNA fragments were easily displayed by 2% agarose gel electrophoresis and then the differential recovered fragments were used directly in cloning,sequencing,and RNA reverse Northern blot analysis.In this study,seven differential ESTs are obtained;two Sequences not found in GenBank,are novel ESTs.They were proved to be differentially expressed genes related with IL-6 effect by reverse Northern hybridization.

Objective To understand patient pathway and clinical characteristics of chronic diseases in urban areas of Shanghai. Methods A total of 10 002 residents were enrolled and assigned to the chronic disease group (including hypertension, diabetes, coronary heart disease, myocardial infarction, and ischemic stroke) and the non-chronic disease group. Body mass index,fasting blood glucose, triglyceride,total cholesterol, high-density lipoprotein cholesterol and low-density lipoprotein cholesterol were tested.Difference of patient pathway and clinical characteristics of those chronic diseases was compared. Results Above chronic diseases were observed in 37.7% participants. About 2/3 diseases were confirmed and 80% patients were followed up in healthcare units not far away from home. Patients with coronary heart disease and myocardial infarction showed more outpatient visit to tertiary hospitals (P＜0. 05 ). However, patients with ischemic stroke had health check, rehabilitation and pharmacy done mainly in local healthcare centers (P＜0. 05 ). Diastolic blood pressure of patients visiting local doctors was significantly decreased (P＜0. 05). Conclusion Some differences in patient pathway were found in this study. Communication and cooperation between medical institutions should be intensified for effective chronic disease control.

OBJECTIVETo discuss the clustering of Yunnan unexplained sudden death (YUSD) in household and village.

METHODSFifty-two cases were found by YUSD surveillance system in 2005. Poisson distribution and beta-binomial distribution (BBD) were employed in studying the household distribution of the disease. Poisson distribution and negative binomial distribution (NBD) were employed in studying the village distribution of the disease.

RESULTSBBD were fitted household distribution of YUSD very well (chi(2) = 0.25, P = 0.62), while Poisson distribution was consistent with it (chi(2) = 46.01, P < 0.001). And NBD were fitted village distribution of YUSD very well (chi(2) = 0.05, P = 0.58), however the consistency in Poisson distribution was not observed (chi(2) = 110.57, P < 0.001).

CONCLUSIONHousehold and village clustering of YUSD does exist.

Bias ; Binomial Distribution ; Cause of Death ; China ; epidemiology ; Death, Sudden ; epidemiology ; Family ; Humans