AIM To investigate the positive inotropic effect of aconitine on isolated hearts from cardiac dysfunctional rats when combined with pinacidil. METHODS In our experiment Langendorff perfusion equipment was used to investigate the following cardiac indexes:LVSP(left ventricular systolic pressure), LVDP(left ventricular diastolic pressure), +d p /d t max (the maximum going up rate of left ventricular pressure) and -d p /d t max (the maximum going down rate of left ventricular pressure) from rat hearts under two conditions:① aconitine only,② aconitine plus pinacidil(an agonist of K ATP channel) to observe the positive inotropic effect of aconitine on cardiac dysfunctional rat hearts. RESULS ①Aconitine had certain positive inotropic effect on isolated hearts from cardiac dysfunctional rats; ②Combing aconitine with potassium channel activator markedly winded the doses range between the effective and toxic concentration and enhanced the cardiotonic effect of aconitine. CONCLUSION Aconitine had positive inotropic effect on dysfunctional isolated rat hearts; the combination of aconitine with potassium channel activator markedly widened the cardiotonic doses range of aconitine and enhanced its cardiotonic effect.

Objective To investigate the effects of 1% ropivacaine injected epineurally or intraneurally on the recovery of sciatic nerve from acute injury in rats. Methods Seventy-two healthy male Wistar rats weighing 220-250 g were xandomly assigned into 4 groups ( n = 18 each): group Ⅰ epineural injection of normal saline(NS)(group C1); group Ⅱ intraneural injection of NS (group C2); group Ⅲ epineural injection of 1% ropivacaine (group Epi-R) and group Ⅳ intraneural injection of 1% ropivacaine (group Intra-R). The animals were anesthetized with intraperitoneal 3% pentobarbital 60 mg/kg. The sciatic nerve was exposed and crushed with blood vessel clamp for 2 min. NS or 1% ropivacaine 0.2 ml was injected epineurally or intraneurally after release of the clamp.Sciatic nerve function was measured and sciatic nerve function index (SFI) was calculated at day 1, 3, 7, 14, 21and 28 after operation. Six animals in each group were anesthetized on the 14th and 28th day after operation and the nerve conduction velocity (NCV) of the sciatic nerve was measured. The sciatic nerve was then removed for histologic examination. Results There was no significant difference in SFI and NCV at all time points among group C1 , C2 and Epi-R. SFI was almost normal on the 28th day after operation in the 3 groups. The NCV was significantly slower at day 14 and 28 after operation in intra-R group than in the other 3 groups. Conclusion Intra-neural injection of ropivacaine can significantly delay the recovery of sciatic nerve from acute injury.

Histone modification participates in the occurrence and development of the diseases though affecting gene transcrip-tion activity by acetylation,methylation,phosphorylation,and other forms.It is an important field in the study of epigenetics. Numerous studies have demonstrated that histone modification plays an important role in the occurrence and development of liv-er diseases.This paper reviews the recent progress in under-standing the role and mechanisms of histone modification in alco-holic liver disease,nonalcoholic fatty liver disease,viral hepati-tis,liver fibrosis and hepatocellular carcinoma,with an aim to provide a theoretical basis for the treatment of liver diseases and drug development.

Objective:To investigate the curative effect of electroacupuncture on urine retention following cervical cancer operation. Methods: A treatment group was treated with electroacupuncture according to classification based on syndrome differentiation and a control group, by a conventional method. One course of treatment consisted of 5 days. Results: The curative rate and cure rate were 96.67% and 76.67%, respectively, in the treatment group and 70% and 36.67%, respectively, in the control group. There were significant differences in curative rate and cure rate between the two groups (P＜0.01). Conclusion:Electroacupuncture is a good method for treating urine retention subsequent to cervical cancer operation.

Objective To explore the effects on self-efficacy and health behavior change in elderly patients with chronic diseases in community by motivational interviewing and to provide the basis for the health behavior management of elderly patients with chronic diseases in community.Methods The study was based on a cross-section investigation by random cluster sampling which included a sample of 287 elderly patients.The questionnaire was localized good life club questionnaire of Australia,including demographic data,prevalence of chronic diseases,health-related indicators,self-health assessment,psychological pressure measurement,life satisfaction scale and assessment of behavior change stage.A total of 265 valid questionnaires were effective,and the effective rate was 92.3％.Results The scores of self-reported symptoms and life satisfaction of patients with chronic diseases after motivational interviewing were significantly higher than before (F=8.527,7.697; P＜0.05),the scores of stress scale and behavior change stages were significantly lower than before (F=229.483,91.613; P＜0.01).The score differences with health self-assessment,functional status and social function evaluation were not statistically significant(F=0.222,2.084,P＞0.05).The number of patients who believed their health are better rose from 102 to 114,the number of patients whose life satisfaction were moderate and above rose from 255 to 265,and the number of high risk of psychological stress reduced from 5 to 1.In the stages of behavior change,the number of people in the action stage rose from 1 to 20,and the number of people in the preparation stage rose from 138 to 215 after the intervention.Conclusion Motivational interviewing can strengthen the self-efficacy in elderly patients with chronic diseases in community significantly and promote healthy behavior change.It is necessary to provide ongoing support for motivational interviewing to consolidate its behavior change outcomes,because of the complexity of the development process of behavior change stages.

Free lysine in a preparation of queen bee's embryo was isolated using cation exchange resin- The Q-aminoand carboxyl group of lysine was complexed with cupric ion and the E-amino group reacted with FDNB(Fluoro-dinitrobenzene). After acid treatment and extraction with ether,the absorbance of the solution at 395nm was determined by spectrophotometry. Variation coefficient of the determination was less than 6% and the recovery of lysine was 95 % ~ 110 %.

Aim To explore the inhibitory effect of li-gustrazine combined with paeonol on rat liver fibrosis induced by CCl4 and its mechanisms,so as to provide new treatment strategies for liver fibrosis in clinical. Methods Cleaning laboratory male SD rats were ran-domly divided into blank control group,model group (CCl4 ),ligustrazine group,paeonol group and combi-nation group (ligustrazine+paeonol).HE staining was used to observe the pathological change.Masson stai-ning and Sirius red staining was used to observe the collagen deposition.The levels of serum ALT,AST, ALP and hydroxyproline were detected by automatic bi-ochemistry analyzer.Western blot detected the markers of liver fibrosis.HSC-T6 cell was divided into model group,ligustrazine group,paeonol group and combina-tion group.The protein and gene expression of inflam-mation and apoptosis pathway was analyzed by Western blot and real time-PCR.Results Ligustrazine com-bined with paeonol could significantly improve liver tis-sue pathology changes caused by CCl4 .It could reduce serum ALT, AST, ALP and hydroxyproline levels. Moreover,it could also inhibit liver fibrosis marker protein expression,and thus reduce the deposition of collagen fibers.The effect was better than that in sin-gle intervention group.Combination group could inhib-it the inflammatory pathways related protein expression in HSC cells and promote the apoptosis of HSC cells. Conclusion Ligustrazine in combination with paeonol has significant anti-fibrosis effect,and the effect is bet-ter than both single intervention.The effect may be due to the interference with TNF-α/NF-κB pathway in the HSC cells,which promotes its apoptosis and inhib-its the generation of extracellular matrix.

We enrolled 60 patients with American Association of Anesthesiologists grade Ⅰ - Ⅱ undergoing unilateral total knee arthroplasty. All patients received combined epidural and spinal anesthesia,and a nerve stimulator was used to guide placement of a femoral nerve catheter. Patients were divided into three groups according to the catheter location on X-ray : psoas muscle group ( n = 18 ), iliacus muscle group (n = 19) and local group (n =23). Visual analog scale (VAS) pain scores were recorded at rest and with movement at 4, 24 and 48 h postoperatively and sensory blockade of the femoral, obturator and lateral femoral cutaneous nerves was recorded at 24 h.There were no significant differences in femoral nerve blockade among the three groups. Obturator nerve blockade was significantly better in the psoas muscle group than in the iliacus muscle and local groups, and was also better in the local group than in the iliacus muscle group. There was no significant difference in lateral femoral cutaneous nerve blockade between the psoas muscle and iliacus muscle groups, but there was better blockade in both these groups than in the local group. At 4 h postoperatively, VAS pain scores at rest were significantly lower in the psoas muscle group than in the iliacus muscle and local groups, but there were no significant differences in VAS pain scores with movement among the three groups. At 24 and 48 h postoperatively, VAS scores at rest and with movement were significantly lower in the psoas muscle group than in the iliacus muscle and local groups.

ObjectiveTo compare the efficacy of ropivacaine-lidocaine carbonate mixture versus equivalent ropivacaine for retrograde infraclavicular brachial plexus block.MethodsSixty ASA Ⅰ or Ⅱ patients of both sexes aged 18-64 yr weighing 49-98 kg undergoing elective upper limb surgery with ultrasoumd-guided retrograde infraclavicular brachial plexus block were randomly assigned into two groups ( n ＝ 30 each):group A 0.35％ ropivacaine 30 ml and group B 0.233％ ropivacaine mixed with 0.346％ lidocaine carbonate 30 ml.Sensory (by pinprick test) and motor block (by Bromage scale) were assessed every 5 min after block.The onset time of sensory and motor block of each brachial nerve,the effective rate of sensory and motor block at 30 min after brachial plexus block and complications were recorded.ResultsThere was no significant difference in the onset time of sensory and motor block of each brachial nerve and the effective rate of sensory and motor nerve block between the 2 groups.No severe complication occurred in either group.ConclusionsThe efficacy of retrograde infraclavicular brachial plexus block with ropivacaine-lidocaine carbonate mixture and equivalent ropivacaine is similar suggesting that lidocaine carbonate does not enhance the anesthetic efficacy.

Objective To investigate the existence of epithelial-mesenchymal transition(EMT)and its relation to the expression of HBx protein in hepatocellular carcinoma(HCC).Methods The expression of HBx protein,E-cadherin,β-catenin,N-cadherin and fibronectin were detected by immumnohistochemistry technique in 76 cases of HCC.Results Among 76 HCC samples,the loss of expressions of E-cadherin and β-catenin were 34%(26/76)and 20%(15/76),respectively.The positive expressions of HBx protein,N-cadherin and frbronectin were observed in 68%(52/76),55%(42/76),46%(35/76)of HCC samples,respectively.The loss of expression of E-cadherin significantly correlated with the positive expression of N-cadherin and HBx protein (P＜0.01).The positive expression of N-cadherin and fibronectin significantly correlated with the loss of expression of β-catenin and the positive expression of HBx protein(P＜0.05).Conclusions EMT exists in hepatocellular carcinoma,and the expression of HBx is significantly associated with EMT.