Objective To investigate the effect of different doses of dexmedetomidine on myocardial injury (in perioperative peri‐od) on cardiopulmonary bypass (CPB) in patients with rheumatic heart valve replacement surgery .Methods Patients undertook rheumatic heart valve replacement surgery with mitral stenosis were divided into three groups (n=20) in randomized and double‐blind method :control group (group C) ,dexmedetomidine 0 .3 μg/kg group (DEX1 group) ,dexmedetomidine 0 .6 μg/kg group (DEX2 group) .Central venous blood was drawn respectively before anesthesia induction (T0 ) ,2h after CPB (T1 ) ,24 h after CPB (T2 ) ,48 h after CPB (T3 ) ,72 h after CPB (T4 ) .Plasma muscle calcium protein I (cTnI) and creatine kinase (CreatineKinase MB , CK‐MB) were measured and mean arterial pressure and heart rate were recorded at each time point .Furthermore ,extubation time , ICU stay ,postoperative inotropic score 24 h after operation ,drainage 24 h after operation ,cardio auto‐resuscitation rates and ad‐verse cardiovascular events were recorded .Results Compared with T0 ,HR was significantly lower in the T1 time point in DEX2 group .Compared with group C ,HR ,plasma CK‐MB ,inotropic score 24 h after operation and cardiovascular adverse events was sig‐nificantly reduced in the T1 time points in DEX1 group (P<0 .05) ,but the heart auto‐resuscitation rate did not significantly im‐proved .HR at T1 ,plasma CK‐MB values at T1 and T2 ,and plasma cTnI values at T2 -T4 were significantly reduced ;the heart re‐suscitation significantly increased ,myocardial contraction power ratings 24 h after operation and the incidence of cardiovascular e‐vents was significantly lower in DEX2 group (P<0 .05) .The extubation time ,ICU stay time and drainage 24 h after operation did not change significantly in both groups .Conclusion Dexmedetomidine has a protective effect on perioperative myocardial injury in patients with rheumatic heart valve replacement surgery ,and the effect would be better when the dexmedetomidine was infused at 0 .6 μg · kg -1 · h-1 after a loading dose of 0 .6 μg/Kg continuously .

OBJECTIVE:To explore consumers’perceptions for pharmaceutical care by community pharmacist when purchas-ing OTC drugs. METHODS:Semi-structured interview was conducted for 100 consumers who were recruited in Xingqing District, Jinfeng District and Xixia District of Yinchuan,Ningxia Hui Autonomous Region,their expection for pharmaceutical care by com-munity pharmacists was summarized. RESULTS:Totally 100 residents were interriewed,and 97 completed a full interview with ef-fective interview rate of 97%. Consumers still did not clearly on distinguishing the OTC drugs. The majority of consumers chosen OTC drugs were based on experience and brand,a handful of consumers were under the guidance of community pharmacists. Con-sumers were most concerned about the efficacy,adverse reactions and drug quality in using OTC drugs. Most consumers were not satisfied with the pharmaceutical care in purchasing OTC drugs. Nevertheless,due to a lack of medicine knowledge,consumer had a great demand for pharmaceutical care and willingness to accept it. Low professional level of community pharmacist and staff in current community pharmacy and lack of effective communication between pharmacist and consumer were the obstacles of develop-ing pharmaceutical care. CONCLUSIONS:Because of their distrust on competence of community pharmacist,consumers seek less pharmaceutical care of OTC drugs at community pharmacy though they had expectations on pharmaceutical care of OTC drugs by community pharmacist. Consumers’rely on self-choice of drugs make them exposed to more drug risks.

Free radicals are highly reactive molecules generated predominantly during cellular respiration and normal metabolism. Imbalance between cellular production of free radicals and the ability of cells to defend against them is referred to oxidative stress (OS). OS has been implicated as a potential contributor to the pathogenesis of ischemic cerebrovascular diseases. After brain injury by ischemia, the production of reactive oxygen species (ROS) may increase, leading to tissues damage via several different cellular molecular pathways. Radicals can cause damage to cardinal cellular components such as lipids, proteins, and neucleic acids, leading to subsequent cell death by modes of necrosis or apoptosis. Treatment with antioxidants may prevent propagation of tissues damage and improve both the survival and neurological outcome. The present paper reviews the antioxidants therapy in ischemic cerebrovascular disease, discusses probable reasons of inconsistency between animal experiments and clinical trials on antioxidants, and puts forward strategies against oxidative stress in the treatment of ischemic cerebrovascular diseases.

Objective: To observe whether transforming growth factor-beta 1 (TGF-β1) can improve the mechanical properties of tissue engineered heart valve (TEHV) prepared by TGF-β1 and myofibroblasts. Methods: Myofibroblasts were isolated, cultured, identified, and seeded onto the decellularized aortic valve leaflet. In the experimental group, TEHV were cultured with DMEM containing 10 ng/ml TGF-β1 for 14 days. In the control group, TEHV were cultured with DMEM only for 14 days. The contents of lysyl oxidase (LOX) and hydroxyproline, the expression of LOX and COLL-1 mRNA, and the mechanical properties of the TEHVs were analyzed in each group. Results: The contents of LOX and hydroxyproline, expression of LOX and COLL-1 mRNA, Max-load, and Max-stress were significantly higher in the experimental group than those in the control group (all P<0.05). However, the experimental and control group showed comparable values of Max-strain and elastic modulus. Conclusion: TGF-β1 can increase expression of LOX and COLL-1 mRNA in the seeded cells during TEHV construction, increasing the production and cross-linking of collagen, and improve the mechanical properties of the TEHV.

Neurofibromatosis type 1 is a term of Von Recklinghausenan.It is an autosomal dominant inherited disease which derived by neural crest cell.Prevalence of this disease is 1/3000 1/3500 and is a disease with the highest mutation rate.The pathogenesis of neurofibromatosis type 1 is associated with the deficiency of NF1 gene.Recently,the genetics and genomics research of neurofibromatosis make a great progress.With the development of gene linkage and position cloning technology,the gene sequence of neurofibromatosis type 1 has been found.Recent research of genetics and genomics of NF1 and the structure and function,abnormal expression,the relation of genotype and phenotype,the mutation sensitivity domain of NF1 gene were reviewed.

Objective To explore the relationship between the expression of nestin protein and the expression of vascular endothelia growth factor(VEGF)in hypoxia-ischemia brain damage(HIBD)of neonatal SD rats.Methods Fifty-six 7-day postnatal SD rats were randomly divided into 2 groups,sham operation(n=28)and hypoxic ischemic(HI)group(n=28).Animals were killed in 0,3,12,24 h,3,7,14 d after HIBD rat models established.The brain tissue was obtained to make paraffin section.Expressions of nestin and VEGF protein were examined with immunohistochemical staining and image quantitative analysis.Results The number of VEGF positive cell in the hippocampus and cortex increased reactively after HI and reached peak at the 12th hour and persistent to the 24th hour,which returned the normal level on d3,however,the number of nestin positive cell reached peak on d7 and returned the normal level on d14 after HI.Conclusions VEGF and nestin may contribute to neurolproctetive effects against HIBD.Studying the way to facilitate the coexpression of the nestin and VEGF may have important rolls to enhance the repairment and regeneration.

Background It is very important for us to understand retinal function change in the patient with diabetic mellitus in clinic. At present,the study about diabetic mellitus associated with macular edema includes fundus fluorescense angiography ( FFA) and multifocal electroretinogram ( mfERG) etc.. However, seldom research is performed in the mfERG findings for different types of diabetic macular edema. Objective This study aimed to investigate the mfERG change in different types of diabetic macular edema compared with normal population. Methods Fifty-seven eyes with diabetic macular edema from 40 patients and 35 eyes from age-and gender-matched normal subjects were enrolled in this study. The eyes with diabetic macular edema were assigned to local macular edema group (n=16) ,diffuse macular edema group (n = 22) and cystoid macular edema ( n = 17 ) based on the manifestation of FFA. MfERG was recorded in all the individuals. The informed consent was obtained from each subject prior to any the medical examination. Results In focal diabetic macular edema group,the response density of P1 wave was significantly attenuated in ring 1 , showing a statistical difference in comparison with controls (t =2. 170,P = 0.038) ,and the latencies of P1 and N1 waves showed obvious prolong in ring 4 and 5 (t = 2.519,P = 0. 017 ;t = 2. 451 ,P = 0. 020). In diffuse diabetic macular edema group,the response densities of P1 and N1 waves were declined in ring 1,3,5 and ring 1,3,4,5 respectively,and the latencies of P, in ring 3,4 were significantly delayed respectively in comparison with controls (all P < 0. 05 ). In cystoid diabetic macular edema group, the response densities of P1 and N1 waves were lowed from ring 1 through 5 respectively, and the latencies of P1 and N1 waves were significantly longer from ring 3 through 5 and ring 4 respectively with the statistically significant difference from controls (all P<0. 05). The visual function of fovea was badly damaged. Conclusion These studies indicate that the most serious damage of visual function is in foveal area in cystoid diabetic macular edema group, and is then parafoveal area of diffuse diabetic macular edema group and perifoveal area in focal diabetic macular edema group. The outcome of mfERG presents a good consistency with FFA findings in the patients with diabetic macular edema.

[Objective]To evaluate the clinical results of the patients with severe kyphosis and paraplegia in differnt spine segment due to tuberculosis of thoracic and lumbar which had been treated by different surgical procedure. [Methods]There were a total of 23 patients, 16 male and 7 female in this stuady. The average age were 25 years, ranging from 12~56 years old. Tuberculosis lesion were located in different spine segment(T1~4)four cases, (T5~10)four cases, (T11~L2) nine cases,(L3~5) six cases, two vertebral bodies were involved in 8 patients and three vertebralbodies involved in 12 patients. Surgical procedure:four patients treated through modified anterior cervico-thoracic approach.Five patients treated through one stageposterior total vertebral osteotomy, other patients combined with anterior-posterior approach, according to the patient's surgical situation, twelve patients accepted anterior and posterior combined operation, two patients were treated by two stages.The period of bone grafting fusion, kyphosis deformity correction degree ,and neurological function recovery record were investigated postoperatively.[Results]All patients got solid fusion in a average of seven months. The kyphosis deformity was corrected 49? in average, which was maintained well within follow-up period. Patients neurological function deficiency achieved completely recovery, the longest time being within 10 months. All patients were cured thoroughly and there was no seroius complication.[Conclusion]Different surgical procedure should be selected, according to different spine segments due to tuberculosis of thoracic and lumbar vertebrae with the extent of severe kyphosis and paraplegia, it can achieve thoroughly debridement of tubereulosis, solid interbody fusion, good correction of deformity and forever stability of spine with anterior or posterior internal fixation.It could get successful rehablitation for patient’s neurological function and improve the patient’s life quality.

Objective:To observe whether transforming growth factor-beta 1 (TGF-?1) can improve the mechanical properties of tissue engineered heart valve (TEHV) prepared by TGF-?1 and myofibroblasts.Methods:Myofibroblasts were isolated,cultured,identified,and seeded onto the decellularized aortic valve leaflet.In the experimental group,TEHV were cultured with DMEM containing 10 ng/ml TGF-?1 for 14 days.In the control group,TEHV were cultured with DMEM only for 14 days.The contents of lysyl oxidase (LOX) and hydroxyproline,the expression of LOX and COLL-1 mRNA,and the mechanical properties of the TEHVs were analyzed in each group.Results:The contents of LOX and hydroxyproline,expression of LOX and COLL-1 mRNA,Max-load,and Max-stress were significantly higher in the experimental group than those in the control group (all P

Objective To determine whether focal adhesion kinase (FAK) signal pathway was involved in migration of hepatocarcinoma cells by inhibiting focal adhesion kinase (FAK) phosphorylation in HepG2 cells with focal adhesion related nonkinase (FRNK). Methods The recombinant of FRNK and pEGFP-C2, an endogenous inhibitor of FAK activation,was transfected into HepG2 cells. HepG2 migration was examined by transmembrane assay. FAK and phosphatinositol 3-kinase (PI3-K) phosphorylation were detected by immunoprecipitation method. Confocal scanning microscopy was used to verify nuclear translocation of nuclear factor-kappa B (NF-?B). Results The transfection of FRNK recombinant plasmid could inhibit HepG2 migration, FAK and PI3-K phosphorylation decreased by 50.2 percent and 39.5 percent respectively. Furthermore, NF-?B translocation was down-regulated from 3.495?0.227 to 1.182?0.106. Conclusion These results suggested FAK was a main signal pathway in mediating HepG2 migration. Over expression of FRNK might inhibit signal transduction of FAK via depression of the phosphorylation of PI3-K and NF-?b activation, resulting in the decrease in migration of hepatocarcinoma cell.