Objective:To prepare doxorubicin liposome and investigate its effect on human MCF-7 in vitro. Methods:DOX liposome was prepared by(NH4)2SO4-gradient method.The MTT method was used to test cytotoxicity and reverse multidrug resistance of DOX liposome on MCF-7/DOX. Results:DOX was encapsulated by 90.77%. The results of liposome MTT experiment suggested that IC50 of free DOX was 4 times bigger than DOX liposome.The DOX liposomes’reversing effect on MDR was 4 times as much as that of free DOX. Conclusion:The method of(NH4)2SO4 gradient is suitable for producing DOX liposome and it has better cytotoxicity and reversing MDR effect on MCF-7 than free DOX.

Objective To evaluate atrial stunning after successful cardioversion in patients with atrial fibrillation by utilizing tissue Doppler imaging(TDI),M-mode echocardiography in left atria-ventricuhr annulus motion,together with pulsed Doppler echocardiography and apexcardiogram.Methods Thirtyeight patients with atrial fibrillation who in 1 hour after successfully underwent electrical or pharmacological cardioversion were involved.The peak motion velocity of mitral annulus during atrial contraction period(Am)and peak motion velocity during early diastolic period(Em) was detected by TDI.The biggest motion argument of mitral annulus during atrial contraction period(DAD)and biggest motion argument during early diastolic period(DED)was detected byM-mode echocardiography.The blood flow velocity of mitral during early diastole(E)and atrial contraction(A) was also measured by pulsed Dopphr echocardiography and pressure wave during atrial systole was recorded by apexcardiogram.The patients were divided into two groups according to whether they had atrial stunning(atrial stunning group and non-atrial stunning group).Results The incidence of atrial stunning occurred in left atrium was 28.9%(11/38)at 1 hour after successful cardioversion.There was no significant difference in cardioversion method between two groups(P>0.05).The patients in atrial stunning group had longer duration of atrial fibrillation and Larger left atrium(P<0.05).A,Am and DAD in the atrial systole period in atrial stunning group was 0.but in non-atrial stunning group was(43±34)cm/s,(6±4)cm/s,(0.27 ±0.18)cm,respectively,and there were significant difference between two groups(P<0.05).Conclusion Atrial stunning can happen in left atrium after successful cardioversion,and atrial stunning is related to the duration of atrial fibrillation and the dimension of left atrium.

Epithelial-mesenchymal transition (EMT) is a process by which the epithelial cells change to a mesenchymal phenotype.The highly conserved and fundamental process is integral in development, wound healing and contributes pathologically to fibrosis and cancer progression.The process can be activated by many transcription factors, growth factors or protein molecules, which involves complex molecular mechanism and signal transduction pathways.This paper reviews the development of molecular mechanisms of epithelial-mesenchymal transition and briefly summarizes the research progress of natural compounds targeting the EMT.

Objective To evaluate atrial stunning and the recovery of atrial function after successful cardioversion in the patients with atrial fibrillation by utilizing tissue Doppler imaging(TDI) and M-mode echocardiography in atria-ventricular annulus motion, together with pulsed Doppler echocardiography and apexcardiogram. Methods Thirty-four patients with atrial fibrillation received ultrasound examinations in 1 hour,1 day,1 week and 1 month after successful cardioversion. The results were compared with those of 20 age-matched healthy individuals. From the echocardiography apical 4-chamber views, the atrial mechnical activities in the mitral and tricuspid annulus were recorded using two-dimensional echocardiography guided M-mode and TDI. Furthermore, pulsed Doppler transmitral and transtricuspid inflow velocity and apexcardiogram were also recorded. Atrial stunning means the lack of atrial mechanical function after atrial electrical activity was recovered with successful cardioversion. Results Left and right atrial functions after cardioversion were both inferior to those of the healthy ones,but improved with time,up to 1 week right arial function turned basically to normal and 1 month left one recovered to normal.The incidence of atrial stunning in left and right atrium accounted for (20.6)% and (14.7)% respectively at 1 hour after successful cardioversion, (11.76)% and (14.7)% at 1 day, (6.5)% and (3.2)% at 1 week. Conclusions Both left and right atrial functions are lower than the normal after cardioversion,and atrial stunning happens in both atria.Left and right atria recover to normal respectively in 1 month and 1 week.

OBJECTIVE:To explore therapeutic efficacy and safety of Puerarin injection for elderly female patients with osteo-porosis and unstable angina pectoris,and its effects on serum inflammatory factors. METHODS:Totally 107 elderly women with osteoporosis and unstable angina were analyzed retrospectively and divided into control group(53 cases)and observation group(54 cases) according to drug use. Control group was given routine treatment as Caltrate D,Alendronate sodium tablet,Glyceryl trini-trate tablet ,Metoprolol tartrate tablet,Atorvastatin calcium tablet,Trimetazidine hydrochloride tablet. On the basis of control group, observation group was additionally given Puerarin injection 4 mL added into 5% Glucose injection 500 mL intravenously,once a day. Treatment course of 2 groups lasted for 2 weeks. Therapeutic efficacies of 2 groups were observed as well as the levels of se-rum inflammatory factors(hs-CRP,TNF-α,MMP-9,sCD40L),and the occurrence of ADR. RESULTS:The total response rates of angina pectoris and osteoporosis pain in observation group were significantly higher than control group,with statistical signifi-cance (P<0.05). Before treatment, there was no statistical significance in serum inflammatory factors as hs-CRP, TNF-α, MMP-9,sCD40L between 2 groups (P>0.05). After treatment,the levels of hs-CRP,TNF-α,MMP-9 and sCD40L in 2 groups were significantly lower than before,and the observation group was significantly lower than the control group,with statistical sig-nificance(P<0.05). No obvious ADR was found in 2 groups during treatment. CONCLUSIONS:Based on routine treatment,Pu-erarin injection shows significant therapeutic efficacy for senile female osteoporosis patients with unstable angina and can significant-ly reduce the levels of serum inflammatory factors with good safety.

OBJECTIVE:To develop a RP-HPLC method for simultaneous determination of benzoic acid and salicylic acid in compound benzoic acid ointment.METHODS:Chromatographic condition included Hypersil ODS column and mobile phase of a mixture of potassium dihydrogen phosphate-methanol(78∶22),the detection wavelength was254nm.RESULTS:The linear ranges of benzoic acid and salicylic acid were0.4～2.0mg/ml(r=0.9999)and0.2～1.0mg/ml(r=0.9999);the average re?coveries were98.74%(RSD=0.55%)and98.67%(RSD=0.59%);the intra-day RSDs were0.56%and0.73%(n=5);the inter-day RSDs were0.75%and0.82%(n=5)respectively.CONCLUSION:This method is simple,accurate and quick,and can be used for the quality control of the preparation.

Adult ; Dermatitis, Contact ; etiology ; Humans ; Male ; Middle Aged ; Nitrobenzenes ; poisoning ; Young Adult

The advantages of intense pulsed light therapy in the treatment of Meibomian gland dysfunction include non-invasive, painless and good results, which has been greatly developed in the ophthalmology field.This article reviews the current situation, mechanism of action, operating procedures, treatment outcomes, safety, and other aspects of intense pulsed light therapy in the treatment of Meibomian gland dysfunction.

Objective To study the changes of serum levels of adiponectin and tumor necrosis factor-?in the first-degree family relatives of patients with type 2 diabetic mellitus and the relationship of adiponectin and TNF-?with insulin resistance.Methods 45 families with type 2 diabetes were recruited.The observation group comprised 83 first-degree relatives who were with normal glucose tolerance(NGT).The normal control group comprised 76 NGT spouses of the probands and his/her siblings.The levels of fasting blood glucose,insulin,proinsulin,lipid,adiponectin and TNF-? were measured among two groups.Insulin resistance was calculated using the homeostasis assessment(HOMA).Results The levels of TG,fasting insulin(FINS),fasting proinsulin(FPI),TNF-? and HOMA-IR in first-degree relatives were significantly higher(P

Objective To explore the application and effect of scene imitation method in the education of patients before fiberoptic bronchoscopy.Methods 264 elective bronchoscopy patients between March 2007 and Decembet 2007 were randomly divided into control group(120 patients)and the experiment group(144 patients)Traditional health education was applied in the control group before bronehoscopy.Scene imitation method in health education was applied in the experiment group before bronchoscopy.Results The examination succes rate in the experiment group was significantly improved(P＜0.05).The medical order obeying behavior(MOOB)of the patients was significantly different between the two group(P＜0.01).Conclusion Before the use of fiberoptic bronchoscopy,the new scene simulation method Can help patients on the list obtain more cognitive ability about the testing.Comparing the traditional education,it establishes a sound relationship between doctors and patients,reduces complication and leads to more accurency of testing,thus helping patients to recover soon.