Adolescent ; Child ; Electroencephalography ; Female ; Fructose ; analogs & derivatives ; therapeutic use ; Humans ; Male ; Migraine Disorders ; diagnostic imaging ; drug therapy ; physiopathology ; Ultrasonography, Doppler, Transcranial

Objective To investigate the effect of clinical risk factors including maternal underlying medical conditions on the development of preeclampsia (PE) in order to improve and strengthen the early assessment of high clinical risk population of PE.Methods Clinical.observational data of patients with PE in Peking University Third Hospital from November 2008 to January 2011 were analyzed.Comparative analysis was made among medical conditions with PE (M-PE) sub-group and isolated PE (I-PE) sub-group and non-PE pregnancy with or without medical conditions (control group).Results Totally 159 cases,43.09％ (159/369) of total cases of PE had high clinical risk factors (multiple pregnancy and medical conditions) and 32.3％ (97/300) of singleton PE accompanied with medical conditions.The incidence of PE in singleton pregnancies with medical conditions was significantly higher than those without medical conditions [ 15.0％ (97/646) versus 4.45％ (210/4719),P ＜ 0.05 ].In M-PE sub-group,the average age [ ( 31.7 ± 4.5 ) versus ( 29.3 ± 5.2) year-old] and body mass index (BMI) in first trimester [ (26.0 ±5.6) versus (23.3 ± 3.7) kg/m2],the proportion with previous preeclampsia [ 11％ (11/97) versus 4.9％ (10/203) ] and pregnancy loss in third trimester [ 11％ ( 11/97 ) versus 3.0％ ( 6/203 ) ],were higher than those of I-PE sub-group ( all P ＜ 0.05 ).The onset of preeclampsia in M-PE sub-group was earlier than I-PE ( 32.9 versus 34.4 gestation weeks,P ＜ 0.05 ).The proportion serious cases of PE occurring before 32 gestational weeks were higher in M-PE than that of I-PE sub-group [ 45％ (44/97)versus 34.0％ (69/203),P ＜0.05].Multivariate regression analysis showed that previous history of late pregnancy loss and irregular prenatal care were clinical risk factors for early-onset PE whether early-onset was defined as ＜ 34 or ＜ 32 gestational weeks respectively (all P ＜ 0.05) ; medical conditions were risk factors for PE if early-onset was defined as ＜ 32 gestational weeks ( OR =1.718,95％ CI:1.005 - 2.937,P =0.048).Conclusions Multiple pregnancies and pregnancies with medical conditions exceed one-third of total subjects of PE.The onset of PE in subjects with maternal underlying medical conditions was earlier which is the subgroup should not be ignored.The difference of early pregnancy BMI may show the maternal heterogeneity in early onset and late onset of preeclampsia.Assessment of clinical risk factors including the underlying medical disorders for preeclampsia in early trimester should be strengthened.

Objective To investigate the relationship between potential maternal risk factors between potential maternal risk factors in different level hospitals as well as different prenatal care patterns and characteristics of preeclampsia. Methods A retrospective study of 300 preeclamptic singleton patients delivered in Peking University Third Hospital was performed.Patients were divided into three groups:regular prenatal care in tertiary hospitals (n =100),regular prenatal care in primary hospitals (n=81) and without prenatal care (n=119). The onset of preeclampsia and incidence of severe preeclampsia of different groups were analyzed. Non-parametric and Chi-square test were adopted for continuous and categorical variables respectively. Results (1) In total cases of preeclampsia subgroup (I-PE subgroup) and with chronic hypertension (CH subgroup),the diagnosis of preeclampsia was later in patient with regular prenatal care in tertiary hospital (patient-TH)[100,64 and 14 cases,37.1 (4.1),37.3 (1.7) and 36.3 (2.5) weeks respectively] than those with regular prenatal care in primary hospital (patient-PH) [81,54 and 9 cases,32.9 (6.7),33.8 (6.1)and 27.9(6.3) weeks respectively] (Z=72.29,51.30 and 14.58 respectively,P＜0.05) or the patient without regular prenatal care (patient-NP) [119,85 and 19 cases,31.6(6.6),31.9(6.7) and 30.3(4.7) weeks respectively] (Z=86.69,58.83 and 11.33 respectively,P＜0.05).The proportion of severe preeclampsia occurred earlier than 32 weeks [13.0％ (13/100) vs 55.5％ (66/119),9.4％(6/64) vs 50.6％(43/85),and 35.7％(5/14) vs 89.5％(17/19); x2=43.95,29.42 and 10.17respectively,P＜0.05] or earlier than 34 weeks [17.0％ (17/100) vs 65.5％ (78/119),14.1％(9/64) vs 61.2％(52/85) and 42.9％(6/14) vs 94.7％(18/19); x2 =47.71,31.18 and 10.61 respectively,P＜0.05] were lower in patient-TH than in patient-NP.(2) In patient-NP and patientPH,onset of preeclampsia was earlier in CH subgroup compared with I-PE subgroup (Z=26.61 and 22.82,P＜ 0.05). In patient-NP,the proportion of severe preeclampsia occurred earlier than 32 weeks (x2 =9.11,P＜0.05) or earlier than 34 weeks (x2 =7.95,P＜0.05) was higher in CH subgroup than in I-PE subgroup. Conclusions Regular prenatal care in tertiary hospital might effectively delay the onset of preeclampsia or severe preeclampsia,especially in patients with risk factors for preeclampsia. Assessment of risk factors for preeclampsia in early trimester should be strengthened and individualized prenatal care plan should be established.

OBJECTIVE To realize the situation of the infection of Ureaplasma urealyticum(Uu) and Mycoplasma hominis(Mh) and the drug resistance among the female patients with urogenital tract infection.METHODS Totally 813 specimens in the female patients with urogenital tract infection were collected,cultured and tested for drug sensitivity with mycoplasma test drug sensitivity kit.RESULTS From the specimens of 813 cases the infection of Uu was in 296 cases(36.4%),the infection of Mh in 13 cases(1.6%),and the mixed was in 71(8.7%) cases,totally 380 cases(46.7%) were infected.The results of drug sensitivity showed that the sensitivities of Uu and Mh to josamycin,doxycycline and minocyclin were remarkable and the drug resistance of Uu and Mh to ofloxacin was the most prominent.CONCLUSIONS The infection of Uu and Mh is high among the femalepatients with urogenital tract infection.Especially the infection of Uu is usual.Uu and Mh have high drug resistance to many antibiotics,especially to ofloxacin.There is some difference between the drug resistances of Uu,Mh and Uu+Mh.To treat the infection of Mycoplasma some antibiotics are good choices,such as josamycin,doxycycline and minocyclin.

ObjectiveTo explore the effect and mechanism of Toll-like receptor 4(TLR4) ligand LPS-mediated inhibition hepatitis B virus (HBV) replication in Bewo cells.MethodsFirst of all,2 μg 1.3-fold HBV recombinant vector pcDNA3.1 ( + )-HBV1.3 were transfected into Bewo cells,after 12 h,the cells were treated with LPS for 3 d.To observe the kinetics of IFN-β and TNF-α expression in Bewo cells,the Bewo cells were exposed to TLR4 ligand LPS.And the effect of pyrrolidine dithiocarbamate ( PDTC),an inhibitor of NF-κB,on LPS-induced cytokines was also observed.The HBsAg,HBeAg and HBV DNA level in the culture supernatant were detected by Microparticle Enzyme Immunoassay (MEIA) and fluorescence quantitative PCR,respectively,and the expression of IFN-β,TNF-α,TRIF and MyD88 was detected by ELISA and RT-PCR,respectively.ResultsCompared with control group,LPS could significantly suppress HBV replication in Bewo cells ( P ＜0.01 ),and it could induce the production of TNFα in Bewo cells ( P ＜ 0.05 ),in time-and dose-dependent manners.PDTC strongly inhibited LPS and induced TNF-α production,but had no much effect on IFN-β in Bewo cells ( P ＜ 0.001 ).Compared with control group,the mRNA levels of MyD88 were significantly induced by LPS in the Bewo cells transfected with this recombinant vector( P ＜ 0.001 ).ConclusionsTLR4 ligand LPS could significantly suppress HBV replication by inducing TNF-α production in Bewo cells mainly via the MyD88/ NF-κB signal pathway.

Objective To explore the relationship between TLR3 mRNA expression on peripheral blood mononuclear cells(PBMCs)and acute rotavirus(RV)diarrhea.Methods Sixty-one children with acute RV diarrhea served as study subject,the expression of TLR3 mRNA on PBMCs was detected by real-time fluorescence quantitative RT-PCR.the concentrations of IFN-γand TNF-α in serum were measured by the method of Enzyrme-linked immunosorbent assay(EUSA).Results The expression of TLR3 on PBMCs and the serum levels of IFN-γ and TNF-α in the serious diarrhea group were 0. 820±0.051,(33.67±12.88)Pg/ml, (62.21±14.65)pg/ml,respectively,while it were 0.717±0.040,(24.01±10.06)pg/ml,(50.99± 12.18)pg/ml in the slight diarrhea group,and 0.525±0.029,(12.52±5.19)pg/ml,(28.65±7.44)pg/ml in the control group.Compared with the control group.the expression of TLR3 on PBMCs and the serum levels of IFN-γ,TNF-α in the serious and slight diarrhea group were significantly higher(P<0.01).There were significant differences between the serious and slight diarrhea group(P<0.01).There were positive relationship between the expression of TLR3 on PBMCs and tHe serum IFN-γ,TNF-α levels(r=0.431,P< 0.05,r=0.372,P<0.05).Conclusion The expression of TLR3 on PBMCs in children with acute rotavirus dialThea iS up-regulated,TLR3 and its mediated immune response are associated with the development of acute rotavirus diarrhea.

Objective To investigate the correlation between plasma brain natriuretic peptide (BNP) ,central aortic systolic pres-sure with the degree of coronary artery lesion .Methods One hundred and fifty patients with coronary artery disease ,positive coro-nary angiographic results and without heart failure in the cardiological department of this hospital from March to June 2011 were selected and divided into the hypertension group (n=90) and the non-hypertension group(n=60) according to the blood pressure . The plasma BNP before angiography was detected by ELISA .The coronary lesion vessels and clinical scores were assessed after an-giography .The central aortic pressure before angiography was measured by the noninvasive measurement method and the diastolic blood pressure(DBP) ,systolic blood pressure(SBP) and pulse pressure(PP)were recorded .The correlation between PP and BNP was analyzed by Logistic regression .Results The plasma BNP concentration in the hypertension group was significantly higher than that in the non-hypertension group(P<0 .05) .The SBP level in 2 vessels ,3 vessels was significantly higher than that in the momal coronary group(P<0 .05) ,the PP in 3 vessels was significantly higher than that in the momal coronary group (P<0 .05) . The BNP level in 3 vessels ,2 vessels and single vessel of coronary artery lesion was significantly higher than that in the normal cor-onary artery group(P<0 .05) .The Logistic regression analysis on the PP influencing factors found that PP was closely related with the number of coronary artery lesion vessels ,lesion score ,LVEF and BNP ;the multiple correlation coefficient between PP with the number of coronary artery lesion vessels ,lesion score and BPN was 0 .91 ,its linear model was PP=0 .543 lesion vessels number +0 .656 lesion score + 0 .864 BNP .Conclusion PP of the central aortic pressure is a risk factor for the development and progress of coronary artery stenosis occurrence .BNP may be used as a plasma marker of the degree of coronary artery stenosis .

Objective To synthesize 99Tcm- (hydrazinonictinamide- [Lys3] -bombesin) (tricine)(trisodium triphenylphosphine-3,3',3"-trisulfonate) ((HYNIC-[Lys3]-BBS) (tricine) (TPPTS)) and evaluate its biodistribution and binding capability with tumor tissue in Balb/c nude mice bearing human pancreatic cancer xenografts. Methods HYNIC was conjugated to the [Lys3] -BBS at pH = 9.0 with SnCl2 as reducing agent and both tricine and TPPTS as coligands for 99Tcm-labeling. 99Tcm-HYNIC-[Lys3]-BBS)(tricine) (TPPTS) was purified by Sep-Pak C18 cartridge and was analysed by HPLC. The radiochemical purity and radiolabeling yield were measured. The stability of 99Tcm-(HYNIC-[Lys3]-BBS) (tricine)(TPPTS) in serum, biodistribution (% ID/g) in the normal mice and imaging of the Balb/c nude mice bearing human pancreatic cancer xenografts in vivo were studied. Results The radiolabeling yield was (90 ±2)% and the radiochemical purity was over 95%. The radiochemical purity after 4 h in serum was over 85%. The distribution in normal mice showed rapid clearance from blood (the uptake was (0.07 ±0.01) %ID/g at 2 h postinjection). 99Tcm-(HYNIC-[Lys3]-BBS) (tricine) (TPPTS) was excreted mainly via the kidney with little radioactivity accumulation in the liver and gastrointestinal tract (the uptake of liver, stomach, intestine was (0.27 ±0.03), (0.06 ±0.03), (0.04 ±0.00) %ID/g at 2 h postinjection). Marked uptake of radioactivity was found in tumor tissue of the Balb/c nude mice bearing human pancreatic cancer with maximum T/NT ratio of 3.71 ± 0.57 at 2 h postinjection. Conclusions 99Tcm-(HYNIC-[Lys3]-BBS)(tricine) (TPPTS) can be easily prepared with high radiolabeling yield and radiochemical purity. The stability in serum and good biodistribution charateristics make it useful for the diagnosis of human pancreatic cancer with over-expression of the gastric-releasing peptide(GRP) receptor.

Objective To observe the sensitivity of myocardium to ischemia/reperfusion (I/R) injury in mechanical trauma rats.Methods The mechanical trauma was established by Noble-Collip drum in the rats that were completely randomized into five groups:sham trauma group,trauma group,sham trauma and sham surgery group,sham trauma and I/R group,trauma and I/R group.The rats were subjected to 30 minutes of ischemia and one hour of reperfusion one week after trauma.The left ventricular systolic pressure (LVSP) and the left ventricular maximum rate of pressure rise and fall ( ± dp/dtmax ) were recorded with BL-410 biological signal recording and analysis system.The levels of serum creatine kinase isoenzyme MB (CK-MB) and cardiac troponinⅠ (cTnI) were detected by double antibody sandwich ABC-ELISA technique.At the end of reperfusion,the heart was excised and stained with Evan' s blue dye and triphenyltetrazolium chloride (TTC) to measure the infarct region with Image-Pro Plus 6.0 image analysis software.Results Compared with the sham traumatic I/R group,the cardiac function in vivo was significantly decreased in the traumatic I/R group ( P ＜ 0.01 ).While the serum CK-MB [ (4 960 ± 588 ) ng/ml:(2 925 ± 426) ng/ml,P ＜ 0.01 ],cTnI [ ( 18.10 ± 3.06 ) ng/ml:( 6.67 ±1.57 ) ng/ml,P ＜ 0.01 ] levels and myocardial infarct size [ ( 36.70 ± 7.42 ) ％:( 22.27 ± 4.54 ) ％,P＜0.01] were obviously higher in the traumatic I/R group compared with the sham traumatic I/R group.Conclusion Mechanical trauma increases the sensitivity of myocardium to I/R injury in rats.

OBJECTIVETo study the overexpression of Sox9 gene on rabbit bone marrow mesenchymal stem cells for repairing articular cartilage injury in vivo.

METHODSRabbit bone marrow mesenchymal stem cells (BMSCs) were transduced with lentivirus vector containing Sox9 gene and then cartilage specific molecule was detected by RT-PCR in vitro. Total 48 knee joints of 24 mature New Zealand white rabbits were randomly divided into 3 groups according to different defect treatment. After animals anesthesia,a full-thickness cylindrical cartilage defect of 4 mm diameter and 3 mm deep was created in the patellar groove using a stainlesssteel punch. Meanwhile, the transfected cells were implanted to repair the rabbit model with full-thickness cartilage defects. Cartilage defects tissue was observed with light microscope, electron microscope, HE and immunohistochemistry staining to assess the repair of defects by the complex at 6 weeks or 12 weeks after the implantation.

RESULTSAt 3 days after the transfection, Sox9 gene expression was highest and Sox9 gene expression decreased with the increase of time. At 3 days after the transfection, the expression of collagen type II began and reached the peak at 14 days. It showed that the bone marrow mesenchymal stem cells went into chondrogenic differentiation after transfected by Sox9 gene. Histological observation showed that at 6 weeks after the operation, the defects in the experimental group was filled with hyaline like cartilage tissue, 12 weeks after operation,the defects of cartilage and subchondral bone had satisfactory healing. Both at 6 and 12 weeks postoperatively, the defects were filled with fibrous tissues in control groups. Meanwhile, immunohistochemical staining of sections with type II collagen antibodies showed the proteins in the regenerated tissue stained positive for type II collagen and stronger than the control groups. The histological scoring system indicated that the cartilage repair of experiment groups were better than the two control groups with statistical significances.

CONCLUSIONOverexpression of Sox9 gene on rabbit bone marrow mesenchymal stem cells (BMSCs) promote the repair of cartilage defect.

Animals ; Bone Marrow Cells ; metabolism ; Bone Marrow Transplantation ; Cartilage, Articular ; injuries ; metabolism ; Cell- and Tissue-Based Therapy ; Female ; Genetic Vectors ; genetics ; metabolism ; Humans ; Lentivirus ; genetics ; metabolism ; Male ; Mesenchymal Stem Cell Transplantation ; Mesenchymal Stromal Cells ; metabolism ; Osteoarthritis ; genetics ; metabolism ; therapy ; Rabbits ; SOX9 Transcription Factor ; genetics ; metabolism ; Tissue Engineering