ObjectiveTo observe the effect of dehydroepiandrostrone (DHEA) on retinal capillary pericytes’ proliferation under high glucose and research the prevention and treatment of diabetic retinopathy (DR).MethodsRetinas were dissected from eyes of fresh killed cattle and retinal capillary pericytes were separated and cultured.The effect of DHEA (10、50、100、500、1 000nmol/L) on pericytes’ proliferetion was evaluated by 3H-thymidine incorporation and li-quid scintillation techniques.ResultsThere was significant difference between DHEA (50、100、500、1 000nmol/L) and control culturing for 48h.The increasing rate was 42.67% in DHEA of 500nmol/L.ConclusionDHEA could promote pericytes’ proliferation under high glucose.This provided reliable evidence for selecting effective drugs for prevention and treatment of DR clinically.

Objective　To observe the effect of high glucose on retinal capillary pericytes in vitro and research the pathogenesis of diabetic retinopathy (DR). Methods　Retinas dissected from eyes of fresh killed cattle were separated and retinal capillary pericytes were cultured. The effect of high glucose on pericytes was evaluated by measurement of lactate dehydrogenase(LDH),3H-thymidine incorporation and liquid scintillation techniques.Morphological changes were observed under microscope and electric microscope.Results　There was no significant difference in LDH activity in the supernatants between high glucose(10、20、40mmol*L-1) and normal glucose(5mmol*L-1)cultured for 48h or 96h. High glucose had an effective inhibition on pericytes' proliferation cultured for 48h,96h and 144h, and the inhibition rate increased when the glucose concentration rised and time passed by. The inhibition rate of pericytes was 78.09% after cultured in high glucose (40mmol*L-1) for 144h. Conclusion　High glucose has an effect inhibition on pericytes' proliferation, and the inhibition rate increase when the glucose concentration rises and time passes by.

OBJECTIVE:To evaluate the efficacy and safety of salmon calcitonin plus Xianling gubao for osteoporosis and ostealgia in postmenopausal women. METHODS:160 women with postmenopausal osteoporosis and ostealgia were randomized to 3 groups (treatment group and 2 control groups):the treatment group received(500 IU q.d) salmon calcitonin nasal spray plus Xianling gubao(1.5 g b.i.d orally); the control group Ⅰ received(500 IU q.d) salmon calcitonin nasal spray alone and the control group Ⅱ received Xianling gubao(1.5 g b.i.d orally) alone. All the patients received oral Caltrate D (1 tablet q.d). A course was defined as 30 days. After treatment for a total of 3 courses,the nature and degree of ostealgia in all the patients were assessed,and the outcome indexes were measured and the adverse drug reactions were recorded. RESULTS:There were significant differences between the treatment group and two control groups in total effective rates(92.59% for treatment group vs. 69.81% for control group Ⅰ and 67.92% for control group Ⅱ,P0.05). CONCLUSION:Treatment of osteoporosis and ostealgia in postmenopausal women with salmon calcitonin plus Xianling gubao has been proved to be safe and effective in that the bone density can be increased effectively and the osteoporotic pain of lumbar and back of the patients can be relieved.

Objective To explore the effect of nursing interventions on the postpartum psychogenia. Methods Nursing intervention measures were put into practice continuously for the prenatal and postnatal women. Results The incidence rate of the postpartum psychogenia by nursing interventions was significantly reduced. Conclusion To bring the continuous nursing interventions into effect,women after delivery can optimistically acclimatize oneself to the new role and their Flexibility to the new role and the peripheral relationship was improved.The incidence of the postpartum psychogenia was effectively reduced and their quality of life was significantly improved.

Objective Angiotensin(AngⅡ)is an important proinflammatory mediator in the cardiovascular system.The present study is aimed at investigating the correlation between ceramide and p53 and apoptosis of human umbilical endothelial cells induced by AngⅡ.Methods Human umbilical endothelial cells were cultured in vitro and treated with AngⅡalone or in combination with Losartan(an in- hibitor of AT1),PD123319(an inhibitor of AT2),FB1(an inhibitor of ceramidase),PFT-?(an inhibitor of p53),respectively.The ap- optosis of cells was detected with TUNEL,and p53 expression at protein and mRNA was assessed with Western blotting and reverse tran- scription-polymerase chain reaction(RT-PCR).Results Compared to AngⅡgroup,PD123319 and FB1 could inhibit endothelial cells ap- optosis induced by AngⅡat 24h;hut Losartan and PFT-?could not.Compared to the control group,no statistical difference existed be- tween PD123319 and FB1,but it did exist between Losartan and PFT-?.FB1 and PFT-?down-regulated the p53 expression at the protein and mRNA levels.Conclusion In the process of apoptosis induced by AngⅡ,AngⅡcan induce the activation of ceramide by binding with AT2.AT2 and Ceramide play a key role in the endothelial cells apoptosis induced by AngⅡ.Ceramide may be situated in the upper stream of p53 and induce the apoptosis by p53 pathway.

Aim To investigate the effects of quercetin and psoralen on the proliferation of human breast carcinoma cells in vitro.Methods Effects of quercetin and psoralen on the cell proliferation was tested in ER-positive MCF-7 cells by flow cytometer and Western blot.And the estrogen-like effect of psoralen and its relation with the estrogen-receptor were evaluated by pure estrogen receptor antagonist ICI182,780 as a tool.Results ① Psoralen(10 ?mol?L-1) and quercetin(10 ?mol?L-1) stimulated proliferation of MCF-7 cells compared with vehicle control,and the cell cycle was impulsed from G1 to S,DNA synthesizing was enhanced.It was also found the above function on boosting MCF-7 cell proliferation could be inhibited by adding estrogen receptor antagonism ICI182,780.② Psoralen(10 ?mol?L-1) and quercetin(10 ?mol?L-1) up-regulated ER? protein levels without altering ER? levels.The above up-regulation on ER? protein could be inhibited by adding estrogen receptor antagonism ICI182,780.Conclusions Psoralen and quercetin have the estrogen-like activities through the estrogen response pathway.And they exert estrogenic activity to MCF-7 cell proliferation through interaction with ER? expression.

OBJECTIVE:To explore the effects and safety of atorvastatin combined with probucol on the vascular elasticity in patienits with hypertension. METHODS:246 hypertensive patients were randomly divided into control group and observation group,123 cases in each group. All patients received conventional antigypertensive treatment,based on it,control group was given 10 mg Atorvastatin tablet,qd;observation group was additionally given 0.25 g Probucol tablet,qd,on the basis of control group. They were treated for 1 year. Clinical efficacy,lipid levels(total cholesterol,triglyceride,low density lipoprotein cholesterol,high density lipoprotein cholesterol),cystatin C (Cys-C),C-reactive protein (CRP),elastic parameters of common carotid artery and lower limb artery(stiffness,pressure-strain elastic modulus,compliance,augmentation index,pulse wave velocity)before and af-ter treatment in 2 groups were observed,and the incidence of adverse reactions was compared. RESULTS:Before treatment,there were no significant differences in lipid levels,Cys-C,CRP and elastic parameters of common carotid artery and lower between 2 groups (P>0.05);after treatment,the above-mentioned indexes were significantly improved,and the improvement degree in ob-servation group was superior to control group,the differences were statistically significant(P<0.05). And there were no severe ad-verse reactions during treatment in both 2 groups. CONCLUSIONS:Atorvastatin combined with probucol can improve lipid level and elasticity of common carotid artery and lower limb artery,with good safety.

ObjectiveTo investigate the extracorporeal clearance rate of imipenem in severe infection patients in the mode of continuous vena-venous hemofiltration (CVVH) during continuous renal replacement therapy (CRRT), in order to approach if the concentration of imipenem in plasma could achieve effective levels of anti-infection, and to explore the effect of time and anticoagulation measure on imipenem clearance during CRRT treatment.Methods A prospective observational study was conducted. All adult severe infection patients complicating acute kidney injury (AKI) in the Department of Critical Care Medicine of the Fourth Hospital of Hebei Medical University from March 2013 to September 2014, who were prescribed imipenem as part of their required medical care, and CRRT for treatment of AKI were enrolled. 0.5 g doses of imipenem was administered intravenously every 6 hours or 8 hours according to random number table, and infused over 0.5 hour. The unfractionated heparin was used for anticoagulation in the patients without contraindications, and no anticoagulation strategy was used in the patients with high risk of bleeding. At 24 hours after first time of administration, postfilter venous blood and ultrafiltrate samples were collected at 0, 0.25, 0.5, 0.75, 1, 2, 5, 6, and 8 hours after imipenem administration. The concentration of imipenem in above samples was determined with liquid chromatography-mass spectrometer/mass spectrometer (LC-MS/MS).Results A total of 25 patients were enrolled. Thirteen patients received imipenem intravenously every 6 hours, and 12 patients, every 8 hours. The anticoagulation was conducted with heparin in 13 cases, and 12 cases without anticoagulation. The intra-day precision, inter-day precision, matrix effect, and recovery rate in low, medium, and high concentration of plasma and ultrafiltrate, and the stability of samples under different conditions showed a good result, the error of accuracy was controlled in the range of±15%. With the application of Prismaflex blood filtration system and AN69-M100 filter, under the mode with CVVH, the total clearance rate of imipenem was (8.874±2.828) L/h when the actual dose of replacement fluid was (31.63±1.48) mL·kg-1·h-1, the total CRRT clearance rate of imipenem in vitro was (2.211±0.539) L/h, which accounting for (30.1±15.7)% of the total drug clearance. In 6 hours interval dosage regimen, the percentages of the time> 4×minimum inhibitory concentration (MIC) at specific 4×MIC of 2, 4, 6, and 8μg/mL of imipenem were more than 40% of the dosing interval. But in the 8 hours interval dosage regimen, when the level was above the 4×MIC of 4μg/mL, maintaining time would drop below 40% of the dosing interval, with significant differences compared with that in 6 hours interval dosage regimen [4×MIC = 2μg/mL: (60.84±20.25)%vs. (94.01±12.46)%,t = 4.977,P = 0.001; 4×MIC = 4μg/mL: (39.85±15.88)% vs. (68.74±9.57)%,t = 5.562, P = 0.000; 4×MIC = 6μg/mL: (27.58±13.70)% vs. (53.97±8.36)%,t = 5.867,P = 0.000; 4×MIC = 8μg/mL:(18.87±12.43)% vs. (43.48±7.83)%,t = 5.976,P = 0.000]. No significant change in sieving coefficient of imipenem was found within a short time (6 hours), which indicated that there was no effect of anticoagulation on clearance of imipenem by AN69-M100 filter, and no statistical significance was found with repeated measure analysis (F = 0.186, P> 0.05).ConclusionsThe clearance rate of imipenem is increased significantly in vitro under the mode of CVVH with the actual dose of replacement fluid was (31.63±1.48) mL·kg-1·h-1 in severe infective patients with severe sepsis complicating AKI, affecting the level of plasma drug concentration, need to adjust the dosage regimen. When the time of the dosing interval was shortened, the concentration of imipenem in patients' plasma could be increased significantly. In a short period of time, the sieving coefficient of imipenem through AN69 filter is not affected by anticoagulation measures and time cleaning efficiency will not decline.

Objective To study the technical skill and therapeutic effect of aortic isolation for treating DeBakey Ⅲ dissecting aneurysm.Methods Among 20 cases of DeBakey Ⅲ dissecting aneurysm,7 cases were with DeBakey Ⅲ a and 13 cases were with DeBakey Ⅲb.Imaging examinatin showed that among the 20 cases there were 5 cases with more than two tearings at difreret site.Covered stent was used to close left subclavian artery in 7 cases and distaI aortic isolation of left subclavian artery was conducted in other 13 cases.Restuls All cases were followed up for 3-40 months,finding that 19 cases survived but one case died because of pseudocoele bronchial fistula hemoptysis 18 months later.Conclusions Endovasular covered stent grafts is the simple,safe and effective way to treat dissecting aneurysm.