Objective To explore the clinical significance of hydrogen sulfide(H2S)and heme oxygenase-1(HO-1)on pulmonary hypertension(PH),by detecting their levels of patients with congenital heart disease(CHD).Methods Forty-eight patients with CHD who had left-to-right shunt were selected randomly from cardiac surgery in the Fourth Hospital of Hebei Medical University.Forty-eight patients were performed successfully on radical operation under complex intravenous anesthesia,and they were divided 3 groups according to pulmonary artery systolic pressure(PASP)detected by doppler echocardiography before operation:no PH group(PASP0.05).Conclusions H2S plays an important role in the formation of PH and restructure.There is no correlation between PASP and HO-1 activities in serum,but HO-1 may be play an indirect action in the formation of PH and restructure.Measuring the levels of H2S may be a reliable method to follow the change of pulmonary pressure and worsening of PH.

Objective To observe the effectiveness and salty of Xiaoer Dingfeng Decoction(Decoction to stop wind in children con- vulsion)in the treatment of syndrome of primary infantile convulsion due to phlegm-heat in tonic-clonic epilepsy.Methods Totally 90 infantile patients were randomized into three groups,which were treated by Xiaoer Dingfeng Decoction,Kangxian(Capsule to treat epilepsy)and Xifeng Capsule(Capsule to calm the wind)respectively.Frequency of seizure,lasting duration,and change of electroen- cephalogram(EEG)were observed 12 months later.Results The total effective rate of Xiaoer Dingfeng Decoction group was 86. 67%,better that that of Kangxian Capsule group(P0.05). It could greatly reduce the frequency of seizure,shorten the lasting duration,and improve the EEG.Conclusion Xiaoer Dingfeng De- coctions is effective and safe for the syndrome of primary infantile convulsion due to phlegm-heat in tonic-clonic epilepsy.

Age-related macular degeneration (AMD) is the leading cause of visual impairment among older population worldwide,and wet AMD is more threatened to vision because of the choroidal neovascularization.Some physical therapies are thought to destroy the lesions but can not improve the visual acuity.Therefore,anti-VEGF drug therapy is becoming a new approach to the management of wet AMD.Vascular endothelial growth factor(VEGF) is thought to play an important role in the complicated pathogenesis,which can be addressed by disease reduction strategies.Among the anti-VEGF drug therapies,anti-VEGF monoclonal antibodies are proved to maintain and improve visual acuity.Other therapies have been or now being developed for the treatment of neovascular AMD with the goal of inhibiting VEGF.These inhibitors include VEGF receptor decoy aflibercept,small interfering RNA-based therapies (bevasiranib) and tyrosine kinase inhibitors (vatalanib),which could offer the potential for further advances.To completely realize the active mechanism of VEGF in wet AMD is helpful for the rational use of anti-VEGF drugs.

Objective To prepare novel alkanethiol modified magnetic silver flower nanoparticles as SERS substrate to chloramphenicol for Raman detection and to determine their enhancement effect.Methods An alkanethiol was chosen as a surface modifier of the substrate and was self-assembled onto the magnetic silver flower nanoparticle surface.The chloram-phenicol molecules were enriched to the surface of the substrate by hydrophobic interaction and the effect for detection of chloramphenicol SERS signal was enhanced.Results It was found that the 1-hexanethiol-modified SERS substrate was able to lead to stronger enhancement than 1-dodecanethiol and octadecanethiol.Fe3 O4@SiO2-Ag-C6 was used to detect the chloramphenicol (10 -3 -10 -10 mol/L) and chloramphenicol in milk (10 -3 -10 -9 mol/L) by surface-enhanced Raman spectroscopy.The detection limits were 0.1 nmol/L (32 ppt) and 1 nmol/L (323 ppt) respectively.Conclusion Alkanethiol modified magnetic silver flower nanoparticles are a highly active SERS substrate, which can be used for detection of low concentrations of analytical substances.

Objective To determine the effect of bacille Calmette-Guerin-polysaccharide nucleic acid (BCG/PSN)on 2,4-dinitrochlorobenzene(DNCB)-induced atopic dermatitis-like skin lesions in Nc/Nga mice.Methods Fifteen mice were randomly and equally classified into 3 groups,i.e.,control group receiving topical acetone on foot pad and abdomen and intraperitoneal injection of physiological saline,model group receiving topical 5% DNCB solution and intraperitoneal injection of physiological saline,treatment group receiving 5% DNCB solution and intraperitoneal iniection of BCG/PSN,and all drugs were used every other day for 7 weeks.Further more,0.1% DNCB was topically applied on the ear and neck of Nc/Nga mice once a week from week 2 to week 7.The effects of BCG/PSN were evaluated by ear thickness,skin histopathology and immunological parameters.Results Repeated application of DNCB caused the development of eczematous dermatitis in mice.Mice in model group chnieally manifested skin dryness,erythema,edema and erosion with histopathological changes including dermal and epidermal thickening,hyperkeratosis,and inflammatory infiltration.The serum levels of IL-4 and IrE in model group were significantly higher than those in control group[(174.72±12.64)μg/L vs (17.32±3.56)μg/L,(91.49±6.32)ng/L vs (83.95±6.63)ng/L,both P<0.05].Increased serum IL-12 and IFN-γ and decreased serum IgE were observed in treatment group compared with the model group[(122.10±4.64)ng/L vs (20.14±6.15)ng/L(73.89±2.39)ng/L vs (51.53±3.45)ng/L, (84.27±9.35)μg/L vs (174.72±12.64)μg/L, all P<0.05].Conclusion BCG/PSN might be beneficial for the treatment of atopie dermatitis-like skin lesions in Nc/Nga mice by enhancing the secretion of IL-12 and IFN-γ and suppressing the synthesis of IgE.

While the medicine pattern of biomedicine turn to biological-psychology-society, the medical trouble communication becomes more and more important in the medical service. Good medical trouble communication ability is the essential condition of doctor. As oral cavity clinicians, only by gasping the principle of communication can we appropriately utilize some skills of communication exchange,establish the good medical trouble relations with the patient and achieve the good treatment result finally.

Carotenoids play an important role in regulating the hydrogen production of hydrogen-producing Rhodobacter sp. The carotenoids of hydrogen-producing Rhodobacter sp. grown in acetate medium were extracted by using acetone-methanol (7∶2,V/V) solvent and were separated by using thin-layer chromatography on silica-gel plate. The qualitative and quantitative of the carotenoids were analyzed by spectrometry. The results showed that the carotenoids were completely extracted three times with acetone-methanol (7∶2,V/V) in two hours. The ultrasonication had little effect on yield of carotenoids. The yield of carotenoids was 2.81mg/g wet cell. There were 4 spots on the silica-gel plate in the order of yellow, red, light red and light yellow. Yellow spot and red spot were the dominant composition of carotenoid in Rhodobacter sp. The spectrometry data showed that the yellow and red component might be the spheroidene and spirilloanthin respectively.

Argyrogramma agnata has been selected as a substitutive host insect for producing Dendrolimus punctatus Cytoplasmic Polyhedrosis Virus (DpCPV). In our experiment, it is very susceptible to DpCPV. The DpCPV produced in A. agnata is designated Aa-DpCPV. The cytoplasmic polyhedra body (CPB), the virion size and the shape of Aa-DpCPV are same as that of its original DpCPV (DpCPV-W1984). The RNA bands of Aa-DpCPV and DpCPV-W1984 all have 10 RNA segments respectively in 3% PAGE, which molecular weights ranged in size from 2.98×106 to 0.66×106 Dalton. Aa-DpCPV has the same strong toxicity as that of DpCPV-W1984 (from D. punctatus) to D. punctatus (Walker) larva. So it can be applied to the pine caterpillar control. The DpCPV yield in A.agnata is 2.5×108CPB/larva.

Objective To determine whether the susceptibility to ischemia-reperfusion injury in aged heart is higher than that in adult heart and,if so,to clarify the mechanisms underlying this change.Methods Wister rats(5-or 20-month-old)were randomly divided into 4 groups(6 animals in each group).The rats were subjected to 30 minutes of myocardial ischemia via ligating the left anterior descending coronary artery,followed by 3 hours of reperfusion(Young-MI/R group and Old-MI/R group);A silk suture around the left anterior descending coronary artery was not ligated in young and old rats(Young-sham group and Old-sham group).Myocardial apoptosis was detected by terminal deoxynueleotidyl transferase biotin-d UTP nick end labeling(TUNEL)staining and caspase-3 activity was detected by using a caspase-3 colorimetrie assay.Nitrotyrosine content,a footprint of in vivo ONOO~-formation,and total NO content were determined by ELISA and chemiluminescence method respectively.Results A significantly exacerbated cardiac reperfusion injury was found in Old-MI/R group as evidenced by increased TUNEL positive myocytes[(19.0?2.1)% vs.(14.6?1.7)%],and increased myocardial caspase-3 activity[(436?35)?mool/mg vs.(340?32)?mol/mg] compared with Young-MI/R group(P＜0.05).Aged hearts had a markedly increased basal NOx level compared with young adult hearts.Marked higher myocardial nitrotyrosine content was found in OId-MI/R group[(7.25?0.18)nmol/g]than that in Young-MI/R group[(4.68?0.15)nmol/g] (P＜0.05).Conclusions In aged hearts,high levels of NO might form highly toxie derivant, ONOO~-,and its subsequent nitrified protein.This may attribute to the increased susceptibility of the aged heart to isehemic-reperfusion injury.

OBJECTIVE:To explore the improvement effect of different polar parts of Sanye Chongcha on models rat with ul-cerative colitis(UC). METHODS:The total extract was obtained from Sanye Chongcha by extraction with 80% ethanol,and dis-persed in water,from which the extracts of corresponding parts were obtained after extraction successively with trichloromethane and ethyl acetate and drying. 60 rats were randomized into normal group,model group,positive group(sulfasalazine enteric-coated tablets,312.5 mg/kg),trichloromethane extraction part group(70 mg/kg),ethyl acetate extraction part group(35 mg/kg)and wa-ter extraction part group(320 mg/kg). The rats except for normal group received 2,4,6-trinitrobenzenesulfonic acid solution(TN-BS)to establish UC model. 24 h later,the rats in the drug administration groups were given corresponding drugs ig,while those in normal group and model group were given normal saline ig,once a day,for 14 consecutive days. For the rats,the pathological change of the colon tissue was observed,and the colon mucosa damage index(CMDI)was scored;the activity of superoxide dis-mutase(SOD)and the content of malondialdehyde(MDA)in serum were determined. RESULTS:Compared to normal group,the rats in model group had obvious UC-like lesion,higher CMDI,lower activity of SOD and higher content of MDA in serum(P<0.01). Compared to model group,the rats in the drug administration groups had the lesion which became less serious or improved and had lower CMDI score,among which those of the ethyl acetate extraction part group and the positive group demonstrated a sta-tistically significant difference(P<0.01);and the rats in the drug administration groups except for trichloromethane extraction part group had higher activity of SOD and lower content of MDA in serum,among which the activity of SOD of the ethyl acetate ex-traction part group and the activity of SOD and content of MDA of the positive group demonstrated a statistically significant differ-ence(P<0.05 or P<0.01). CONCLUSIONS:The ethyl acetate extraction part of Sanye Chongcha can reduce colonic lipid peroxi-dation and thus has obvious improvement effect on the rats with UC caused by TNBS.