Background and purpose:HIF-1? (Hypoxia-inducible factor-1?) is an important transcription factor under hypoxia condition. It plays the role of dominating the expressions of correlative genes. It also promotes tumor deterioration, tumor metastasis and tumor invasion. The molecular role of HIF-1? has been intensively studied in cancer basic research. This article is to investigate the expression of HIF-1? under hypoxic and reoxygenation induced by CoCl_ 2 and the impact of hypoxia-inducible transcription factor-1? on human ovarian carcinoma cell line HO-8910PM. Methods:Semi quantitative reverse transcription-polymerase chain reaction (RT-PCR) is performed to detect the expression of HIF-1? mRNA in human ovarian carcinoma cell HO-8910PM exposed during the phase of hypoxia and reoxygenation. The relations of the quantity-efficiency and the time-efficiency were analyzed. The effects of HIF-1? gene on the proliferation, invasion and adhesion of HO-8910PM cell were estimated by either MTT, Boyden cell or cell adhesion tests.Results:There was endogenous expression of HIF-1? in human ovarian carcinoma cell line HO-8910PM. RT-PCR show that over-expression of HIF-1? mRNA could be measured under hypoxia induced by CoCl_ 2 (P

Objective To investigate the dangers of heart failure to the mother and fetal,and the diagnosis and treatment of pregnancy complicated with heart failure. Methods The clinical data of the causes,timing,management and outcomes of 87 cases of pregnant women complicated with heart failure from March 1993 to January 2006 were analyzed retrospectively. Results ①Thirty-one cases(35.6%) of heart failure in pregnancy were caused by rheumatic heart disease,26(29.9%) by pregnancy-induced hypertension(PIH),16(18.4%) by congenital heart disease,and 14(16.1%) by peripartum cardiomyopathy.②The heart failure appeared at the average of(32.69?5.57) weeks.③The average terminal time of pregnancy was(34.66?4.52) weeks.④There were 79 newborns with 6 cases of twins,and the perinatal mortality was 8.6%(8 cases).Hysterotomy was performed in 6 cases in mid-pregnancy.The average weight of babies was(2419.56?786.08) g.⑤The maternal mortality was 6.9%(6 cases).(Conclusion The main) causes of heart failure in pregnancy are rheumatic heart disease,PIH and congenital heart disease.Although the standard management of pregnancy complicated with heart failure is inotropic agents,diurectics and vasodilators,the treatment should be individualized according to the specific etiology and with the consideration of the safety of fetus as well.Pinpointing the causes of heart failure in pregnant patients and treating accordingly may be conducive to reduce the maternal and perinatal mortality.

Objective To examine the expression of Toll-like receptor(TLR)4 protein and the transcription of TLR4 mRNA in the peripheral blood mononuclear cells(PBMC)from patients with hepatitis B virus(HBV)infection and explore the relationship between TLR4 and chronic HBV infec- tion.Methods The expression level and transcription level of TLR4 were determined by flow cytometre and reverse transcriptase polymerase chain reaction respectively in PBMC from 37 chronic hepatitis patients,28 liver cirrhosis patients,31 severe hepatitis patients and 27 healthy controls. Meanwhile,liver function,as well as blood routine test,prothrombin test activity(PTA)and HBV DNA was measured.Results The expression level and transcription level of TLR4 in patients were higher than those in healthy controls(P

Objective To assess the effect of suppression of insulin-like growth factor-1 receptor (IGF1R)in HO8910PM cell line by small interference RNA(siRNA).Methods Transfection of siRNA using liporectamine 2000 was conducted to silence IGF1R gene expression,the expression levels of IGF1R mRNA and protein were evaluated,and the effects on the cell cycles at 48 hours of transfection were assessed by real-time PCR,western blot and flow cytometry(FCM)assay respectively.The cell growth was detected by cell counting kit-8(CCK-8)at 24,48,72,96 hours of transfection.After 24 hours of transfection,the cells were cuhured with difierent concentrations of cisplatin(DDP)for 24 hours,the cell growth inhibition rate Was evaluated by CCK-8.Following incubation with 10μg/ml DDP for 24 hours after 24 hours of transfection,the apoptosis cells and the protein expression level of apoptosis-related gene,B cell leukemia/lymphoma 2(Bcl-2),were identified by FCM and western blot respectively.Resuits (1)Expression levels of IGF1R mRNA and protein were markedly decreased respectively at 48 hours of transfection IGF1R siRNA.(2)Suppression of IGF1R accompanied the reduction of cell growth at 48,72,96 hours of transfection with IGF1R siRNA,absorbance were 1.71±0.13,2.32±0.23,2.79±0.28 respectively (P＜0.01).(3)IGF1R siRNA induces arrest of G2 phase,the G2 phase rate of cells were 24.37%(P＜0.05).(4)Following treatment with 2.5,5,10,20μg/ml DDP for 24 hours after 24 hours of transfection,the cell growth inhibition rates were(25.94±0.08)%,(40.25±0.05)%,(59.48±0.03)%and(74.18±0.08)%respectively(P＜0.01).(5)Treatment with 10μg/ml DDP for 24 hours after 24 hours of transfection,induces 17.95%of cells apoptosis(P＜0.05),and decreases Bcl-2 protein level.Conclusion RNA interference of IGF1R gene induces the IGF1R silence in HO8910PM cell line significantly,inhibits cell growth in vitro, arrests the G2 phase, and enhances the chemosensitization to DDP.

Animals ; Cardiovascular Diseases ; genetics ; pathology ; Cell Proliferation ; Genes ; Microfilament Proteins ; genetics ; Muscle Proteins ; genetics ; Muscle, Smooth, Vascular ; pathology ; Rats

Chitinases genes from Metarhizium anisopliae which is an important entomopathogenic fungus were considered one of the key factors to invade their hosts. One Metarhizium anisopliae HN1 strain was isolated and screened. A chitinase gene was amplified by RT-PCR from Metarhizium anisopliae HN1, The whole length of this gene was 1275bp,and the nucleotide sequence of the gene was 96% similarity to that of the M. anisopliae E6 accessed in GenBank ( AF02749). The gene has been registered in GenBank and its accession number is DQ011865. The gene was subcloned into prokaryon expression vector pET-22b( + ), transformed this recombinant expression plasmid into E. coli strain BL 21 and effective expressed. The SDS-PAGE analysis indicated that the recombinant protein was 42kDa which is same to the reported article. The expression level of recombinant protein was about 63. 3% of whole expressed proteins , And when recombinant E. coli were crushed by freeze and supersonic wave , the activity assay indicates that the chitinase expressed in bacteria possesses biological activity.

Secondary glaucoma is a kind of complications after vitrectomy, its etiologies are various and complex. Ineffective therapies might cause irreversible damage on optic nerves and visual field defect, even the loss in visual function. Nowadays, this project has been paid great attention by various researches both in China and abroad. Both the pathogens and therapies of secondary glaucoma after vitrectomy are analyzed as follows.

A series of isoindoline derivatives were designed, synthesized, and evaluated for their double inhibitory activities. All of them were new compounds, and their structures were confirmed by 1H NMR and HR-MS. Preliminary in vitro pharmacological tests showed that all compounds exhibited 5-HT or NE reuptake inhibition activity. Among the tested compounds, compound I-3 exhibited potent inhibitory activity against 5-HT and NE reuptake in vitro, and exhibited potent antidepressant activity in vivo. These compounds designed can be further optimized for finding more potent 5-HT/NE dual reuptake inhibitors and antidepressant candidates as well.
Antidepressive Agents ; chemical synthesis ; chemistry ; Biological Transport ; Drug Design ; Isoindoles ; chemical synthesis ; chemistry ; Serotonin Uptake Inhibitors ; chemical synthesis ; chemistry ; Structure-Activity Relationship

Adolescent ; Contracture ; complications ; Humans ; Male ; Osteopoikilosis ; complications ; genetics ; Pelvis