Extracorporeal Membrane Oxygenation ; Female ; Heart Failure ; therapy ; Humans ; Infant ; Postoperative Period ; Respiratory Insufficiency ; therapy ; Twins, Conjoined

Objective To study the therapeutic and protective effect of low tidal volume(LTV) ventilation in children with acute respiratory failure.Methods Forty-eight patients with respiratory failure were enrolled in our study.The patients were suffered from severe infection,trauma or after major operation.Besides general treatments,they were all given ventilation with LTV.Blood gas,ventilation parameters and complications related to ventilation were also measured.Results No significant difference was found between the patients with high tidal volume(HTV) and those with LTV in the results of improving respiratory acidosis.But the incidence of(ventilated-)induced lung injury(VILI) was lower in LTV patients.Conclusion LTV ventilation is preferable for children with acute respiratory failure and beneficial for alleviation of VILI.

Chorionic Gonadotropin, beta Subunit, Human ; blood ; Down Syndrome ; blood ; diagnosis ; Female ; Humans ; Pregnancy ; Pregnancy, Twin ; Prenatal Diagnosis ; alpha-Fetoproteins ; metabolism

Child ; Evidence-Based Medicine ; Guidelines as Topic ; Humans ; Nephrotic Syndrome ; diagnosis ; therapy ; Steroids ; therapeutic use

Objective To explore value of quantitative tissue velocity imaging(QTVI) in the regional systolic and diastolic myocardial function of hypertrophic cardiomyopathy(HCM) patients and healthy persons. Methods By Doppler myocardial imaging 20 HCM patients and 18 healthy subjects were collected,then the regional velocity were measured in the mid and basal segment in systolic,early diastolic and later diastolic period respectively. Results The parameters as systolic velocity(Vs),early diastolic velocity(Ve) and early systolic velocity/later diastolic velocity (Ve/Va) of the HCM group were significantly lower than those of the normal group,while later diastolic velocity(Va) showed no statistic difference between two groups. Conclusions The systolic and diastolic myocardial functions of hypertrophic cardiomyopathy patients are reduced. The abnormality of heart function in HCM patients could be accurately detected by QTVI.

Objective To investigate the efficacy of monotherapy or combination of ACEI and ARB in treating diabetic nephropathy(DN). Methods 183 patients with DN were randomly allocated into three treatment groups: benazepril,losartan or the combination of these two drugs for 12 weeks.The changes of blood pressure, proteinuria, serum potassium and creatinine, creatinine clearance(Ccr)were observed before and after treatment. Results Both of benazepril and losartan reduced blood pressure and proteinuria efficiently.And their effects were similar.In contrast, the reduction in proteinuria was greater in the combination therapy than in treatments of either drug alone(P<0.05), but their reductions in blood pressure were achieved to the same level(P>0.05).There were not significant differences in serum levels of potassium, creatinine and Ccr before and after treatment(P>0.05). Conclusion A combination of ACEI and ARB in patients with DN produces a better anti-proteinuric effect than either of the monotherapies.This protection is not dependent on changes in blood pressure.

Humans ; Infant, Newborn ; Lower Extremity ; pathology ; Lymphedema ; congenital ; Male

BACKGROUND: Reports regarding adipose-derived stern cells (ADSCs) differentiation into dopaminergic (DN) neurons are few in addition, there is not experimental evidence of the effect of ADSCs on maintaining the survival of DN neurons.OBJECTIVE: To investigate the effect of glial cell-derived neurokophic factor (GDNF)-modified adipose-derived stem cells on survival of DN neurons under co-cultured condition.DESIGN, TIME AND SETrlNG: The in vitro cytology experiment was conducted at the Institute of Otolaryngology-Head and Neck Surgery and Key Laboratory of Zoonoses of Ministry of Education between March and December 2007.MATERIALS: Wistar rats with 3-weeks-old, or 14 days of pregnancy were provided by Norman Bethune College of Medicine, Jilin University.METHODS: The GDNF recombinant adenovirus was constructed by using pAdTrackCMV and pAdEasy-1 system. DN neurons were obtained from the rostral mesencaphalic tegmentum of Wistar rat embryos by using trypsin and collagenase method. ADSCs isolated from rat inguinal fat pads were digested with collagenase Ⅱ, cultured and passaged in vitro. When the cells reached 60% cenfluency at the 3rd passage, cells were transfectad with 1×109vp/mL of Ad-GDNF for 1 hour and then transferred into growth medium for another 24 hours, and GDNF level in cell supematant was detected by ELISA assay. Meanwhile, the co-cultured of ADSCs and DN neurons were carried out for following 7 days. With GFP-modified ADSCs was served as a control group.MAIN OUTCOME MEASURES: The effect of co-cultured condition on the survival of DN neurons, as well as the differentiation of GDNF-modified ADSCs was detected by immunofluorescence staining.RESULTS: GDNF appeared in ADSCs supematant at 24 hours after Ad-GDNF transfection and reached a peak at 72 hours.There was approximately 80% GFP-positive labeled in ADSCs. The tyrosinase hydroxylase staining results demonstrated that the rate of survival DN neurons were significantly increased than in DA neurons cultured alone, co-cultured group of GFP-modified ADSCs and GDNF-modified ADSCs groups (55%, 15%, 25%, P < 0.01). However, there were no co-expressing TH and GFP positive cells appeared at 7 days of co-culture, which indicated that the co-cultured condition was not available to ADSCs differentiation.CONCLUSION: The co-cultured of GDNF modified ADSCs and DN neurons can promote the survival and growth of cultured DN neurons, however, it can not induce ADSCs differentiate into DN neurons.

AIM: To study the effect of genistein on c-myc mRNA expression induced by oxidized low density lipoprotein (ox-LDL) in human vascular endothelial cells (ECV304). METHODS: LDL were isolated from healthy human plasma by gradient ultracentrifugation and oxidized by CuSO4. ECV304 cells were exposed to ox-LDL 200 mg*L-1 in the presence or absence of genistein 100 μmol*L-1 for 1, 2, and 4 h in vitro. Northern blot was employed to measure c-myc mRNA levels of ECV304. RESULTS: In response to ox-LDL 200 mg*L-1, c-myc mRNA expression in ECV304 increased by 3 fold for 1h and 3.3 fold for 2 h and decreased below the control level at 4 h. Expressions of c-myc stimulated by ox-LDL in the presence of genistein 100 μmol*L-1 for 1 h and 2 h were separately 80 percent and 60 percent of that in the absence of genistein 100 μmol*L-1. CONCLUSION: Genistein can effectively inhibit c-myc mRNA expression in ECV304 induced by ox-LDL.