Animals ; Drug Combinations ; Drugs, Chinese Herbal ; chemistry ; pharmacokinetics ; pharmacology ; Humans ; Research Design

Congenital Abnormalities ; diagnosis ; therapy ; Ear, External ; abnormalities ; Ear, Middle ; abnormalities ; Humans

Objective To observe the transport of hepatitis B virus (HBV)-infected peripheral blood mononuclear cells (PBMC)through placental barrier set up by choriocarcinoma trophoblast cells (Bewo cells),and to explore the biological role of PBMC as a carrier for HBV transport.Methods Bewo cells and PBMC were cultured and their proliferation and activity were detected by cell counting kit (CCK)-8.One hundred μL serum containing 5 ×10 6 copy/mL HBV DNA was used to infect PBMC,and cells infected with HBV were labeled by fluorescent dye carboxyfluorescein diacetate succinimidyl ester (CFSE).A co-culture model of Bewo cells and HBV-infected PBMC was set up by transwell chamber. The migration of HBV-infected PBMC was detected by flow cytometry.Realtime fluorescence quantitative polymerase chain reaction method was used to detect HBV DNA contents of PBMC under transwell chamber.Results PBMC and Bewo cells proliferated at around 24 h and entered into growth stagnation at around 120 h.The contents of PBMC labeled by green fluorescent at 0,12,24 and 48 h during co-culture under chamber were (0.445 ±0.021)%,(21 .180 ± 4.653 )%,(34.830 ± 7.156 )% and (64.185 ± 3.161)%,respectively.The amount of PBMC marked green fluorescence increased over prolonged incubation time (F =68.983,P =0.001 ).PBMC HBV DNA contents at 24 and 48 h of co-culture under chamber were (1.925±0.431)×103 copy/mL and (2.565 ±0.361)×103 copy/mL,respectively,indicating that PBMC under chamber were infected with HBV.Conclusions PBMC may be a target for HBV infection in extrahepatic tissues.Placental trophoblastic barrier built by transwell chambers may provide new ideas to investigate HBV transmission across the placenta in vitro .

OBJECTIVE:To provide suggestions for the government decision of payment price of medicare drugs. METHODS:Investigation was conducted for the beginning of payment price policy of medicare drugs,effect of the implementation of policy in other countries and the encountered problems. The payment pricing mechanism was explored based on the combination of new medi-cal reform with theoretical analysis and empirical research. RESULTS:The reform of payment pricing mechanism of medicare drugs will have effect on current drug price,especially for R&D oriented pharmaceutical industries. The policy can decrease drug expendi-ture in medicare expenditure,and it is not sure whether it can decrease total medicare expenditure. CONCLUSIONS:It is suggest-ed to notice the related measures and government should keep balance between drug availability and encouraging R&D innovation.

Objective To observe the anti‐metastatic effect and mechanism of baicalin on the growth of HeLa cells was measured by MTT assay ,and cell migration baicalin on human cervical cancer HeLa cells .Methods The effects of baicalin on the proliferation and invasion of HeLa cells were analyzed by MTT method and Transwell assay .Moreover ,Real‐time PCR was used for investigating the expressions of MMP‐2 and MMP‐9 at the RNA level .Western blot was used for investigating the expressions of MMP‐2 ,MMP‐9 ,P38 and p‐P38 at the protein level .Results Baicalin could significantly inhibit the proliferation of HeLa cells in the dose‐dependent manner at the concentration above 60 μg/mL . Anti‐metastatic signaling induced by baicalin was characterized by down‐regulating the RNA and protein expressions of MMP‐2 and MMP‐9 ,and down‐regulating the phosphorylation level of P38 . Pre‐treatment of P38 signal pathway inhibitor could enhance the inhibitory effect of baicalin on the expressions of MMP‐2 and MMP‐9 .Conclusion These results indicate that baicalin‐induced anti‐metastatic effect involves the inhibition of MMP‐2 and MMP‐9 in HeLa cells through P38 signal pathway .

Objective To evaluate the effects of hepatitis B virus on liver function,liver fibrosis,and liver pathological staging at different immune stages.Methods We made a retrospective analysis of 657 patients with chronic hepatitis B diagnosed in the First Hospital of Lanzhou University.Their liver function parameters,liver fibrosis parameters,and hepatitis B virus load were measured by automatic biochemical analyzer,automatic gammaradiation immunity analyzer,and quantitative PCR analyzer,respectively.Effects of hepatitis B virus on liver function,liver fibrosis in different immune stages were analyzed by variance analysis.Effects of hepatitis B virus on liver pathological staging at different immune stages were analyzed by linear trend chi square test analysis.Results In ALT normal chronic hepatitis B patients group,viral load had mild effects on liver function and liver fibrosis parameters.However,in ALT abnormal chronic hepatitis B patients group,viral load had a significant effect on liver function and liver fibrosis parameters,and the effect was most obvious in ALT＞double upper limit of normal group.The specific manifestation was that with viral load increasing,liver function parameters including ALT,AST,TBiL,DBiL,and IBiL increased,while TP and ALB decreased.Liver fibrosis parameters HA,LN,PcⅢ,and CIV all increased (P＜0.05).In ALT normal chronic hepatitis B patients group,viral load had no relationship with liver pathological staging.However,in ALT abnormal chronic hepatitis B patients group,especially ALT≥double upper limit of normal group,viral load was significantly related to liver pathological staging.Conclusion The effects of hepatitis B virus on patients' liver function at different immune stages were different,thus providing evidence-based medicine support for clinical antiviral treatment.

Objective To evaluate the efficacy of dual stent placements for the treatment of occlusion/stenosis of subclavian artery associated with stenosis of adjacent vertebral artery initial site. Methods The clinical data of 9 patients with occlusion/stenosis of subclavian artery associated with stenosis of adjacent vertebral artery initial site were retrospectively analyzed. Stent implantations in the affected subclavian artery and vertebral artery were separately performed; the patients were followed up for 3-12 months after the treatment. The therapeutic efficacy was evaluated with the clinical symptoms and Doppler ultrasonic examination. Results Successful implantation of two stents was accomplished in all 9 patients, with the technical success rate of 100%. After the treatment, the blood flow in both the subclavian and vertebral arteries was unobstructed. Following-up examination showed that the subjective symptoms were obviously improved in all 9 patients, and no serious procedure-related complications occurred. Doppler ultrasound examination showed that no in-stent restenosis or stent displacement was observed. Conclusion For the treatment of occlusion/stenosis of subclavian artery associated with stenosis of adjacent vertebral artery initial site, dual stent placement technique is a safe and feasible means with satisfactory effect in improving vertebro-basilar arterial insufficiency.

Objective To analyze the clinical manifestations,diagnosis and treatment of idiopathic left ventricular tachycardia(ILVT)in infants and young children.Methods The clinical data,including manifestations,lab results and treatments of 37 cases of ILVT in infants and young children were analyzed retrospectively.Results ILVT were seen more in young children older than 1 year old and male infants.A total of 37 cases with ILVT showed diverse clinical manifestations,5 children had cardiac insufficiency with oliguria and edema,2 children had syncope.There were 8 children without any symptoms,and 22 children had some symptoms,which mainly included agitation and crying,weakness and sweaty,vomitting and pale com-plexion.Holter showed incessant ILVT in 20 cases(54.1%),and paroxysmal in 17 cases(45.9%).Of the 37 cases,9 cases presented tachycardia-induced cardiomyopathy(TIC),8 of them were secondary to the in-cessant ILVT.Children with TIC compared with those without TIC,the ventricular rate were faster[(206.2 ± 38.7)beats/min vs.(171.8 ±38.7)beats/min,P<0.05],the duration were longer[(22.6 ± 15.3)days vs. (9.8 ±6.0)days,P<0.05].A total of 34 cases were given by antiarrhythmic drugs,verapamil was higher effective in reversion to sinus rhythm.Radiofrequency ablations were conducted in 8 cases,resulting in ven-tricular tachycardia elimination.All of children were fine during following up periods.After successful control of tachycardia,left ventricular end-diastolic diameter and left ventricular ejection fraction in patients with TIC gradually recovered[(35.4 ± 7.2 )mm vs.(28.9 ± 5.6 )mm,P <0.05;(46.7 ± 4.0 )% vs.(70.1 ± 1 .5 )%,P<0.0 1 ] .Conclusion ILVT in infants and young children are rare,and present different manifes-tions.An incessant ILVT with faster ventricular rate and longer duration are more frequently complicated by TIC.Radiofrequency ablation is the effective way of radical cure of the disease.The diagnosis and treatment for the tachycardia are particularly important in early time,and the prognosis are good.

Objective To evaluate the clinical outcome of Osteoset artificial bone mixed Rifampicin for injection after radical debridement in the treatment of sacroiliac joint tuberculosis,and compare with debridement alone.Methods From May 2005 to August 2010,48 patients with sacroiliac joint tuberculosis patients underwent two different surgical methods were selected as analysis subjects in the Orthopedics Department of Chest Hospital of Hebei Province.Among them,27 cases underwent radical debridement and fusion with Osteoset artificial bone combined with Rifampicin for injection (Grafting group),and 21 case were treated with radical debridement only(Control group).The local wound healing,adverse reactions and regular imaging examination (pelvic X-ray and CT scan) were observed,and the surgical time,the intraoperative blood loss,postoperative 6 months and 12 months,18 months bone graft fusion rate,and Majeed scoring results of the patients were recorded and statistically analyzed.Results All patients were followed up from 20 to 30 months with an average of 24 months.There was no significant difference in terms of surgical time and operative bleeding between the two groups(P＞0.05).The rate of bone fusion in grafting group was 33.33％ (9/27) of 6 months after operation,88.9％(24/27) of 12 months after operation,and 96.3％ (26/27) of 18 months after operation.While that in control group was 4.76％ (1/21) of 6 months after operation,42.85 ％ (9/21) of 12 months after operation,and 42.85％ (9/21) of 18 months after operation.The differences of these parameters between the two groups were significant(x2 =5.85,20.92,15.90;P＜0.05).According to Majeed scoring system,the excellent and good rates were 100％ (27/27) in grafting group,76.19％ (16/21) in control group,the difference was statistically significant(x2=7.18 P＜0.05).Conclusion With Rifampicin loaded Osteoset artificial bone can recruit bone graft mass during the bone fusion for sacroiliac joint tuberculosis,and reduce the adverse reactions,achieve bone fusion earlier than the control group.

Objective To explore the effect of nuclear factor-kappaB(NF-?B) on cardiac myocyte apoptosis and understand the molecular mechanism of decrease of heart function in septic shock rats.Methods Twenty Wistar rats were randomly divided into the septic shock group and the normal control group.The septic shock group(n=10) were fixed with anaesthesia and made into 1.5 cm slices just along the abdomen midline.Then the roots of appendices were returned to the belly cavity after being ligated and punctured 4 times with the No.14 pinhead.After that,the slices were sewn up layer by layer.After 12 hours,the rats were all sacrificed,the blood taken and the serum separated.In the end,the heart specimens of the septic shock group were set aside.Meanwhile,the normal control group were dealt with in the same way except that they were not subjected to cecal ligation and puncture.Then NF-?B protein levels in cardiac tissue and the index of cardiac myocyte apoptosis were measured.Results NF-?B protein levels in the septic shock group(9 cases were strong masculine gender,1 case was middle masculine gender)elevated significantly compared with the normal control group(8 cases were negative gender,2 cases were weak masculine gender) in cardiac tissue(P