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 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.

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.

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 %.

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.

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.

BACKGROUND: As a kind of polypeptide, angiotensin-converting enzyme (ACE) inhibitory peptide can lower the blood pressure of human body through restraining the formation of angiotensin Ⅱ.OBJECTIVE: To investigate the influence of AGE inhibitory peptide on endothelial cell proliferation and endothelin expression in cultured human umbilical vein cells based on cellular and molecular levels in order to provide the experimental evidences for ACE inhibitory peptide to be the potential blood pressure-lowering health food.DESIGN: Repeated measures design.SETTING: School of Bioscience and Bioengineering, South China University of Technology; School of Applied Chemistry and Biological Technology,Shenzhen Polytechnic.MATERIALS: The experiment was carried out in the Institute of Applied Chemistry and Biological Technology, Shenzhen Polytechnic from September 2004 to March 2005. The AGE inhibitory peptide was provided by the Institute of Applied Chemistry and Biological Technology, Shenzhen Polytechnic. Under certain circumstance, 15 μ mol/L of the inhibitor was needed to decrease half of the AGE activity. The human umbilical vein endothelial cells of the 4th generation were cultured randomly in 7 groups with different concentrations: medium group, 150, 300 and 600 mg/L ACE inhibitory peptide groups, captopril group, norepinephrine(NE) group, and ACE inhibitory peptide+NE group.METHODS: ①The endothelial cells were cultured as recommended. The medium was M199+FBS(0.15, v/v)+penicillin(10 000 U/mL)+streptomycin (100 mg/L). After cellular fusion, the cells were carried on the passage with the ratio of 1:2. The 4th generation cells were used for experiment. ②M199(0.15, v/v) was contained in each group. ACE inhibitory peptides were added to make the final concentration 150, 300 and 600 mg/L in the 150, 300 and 600 mg/L ACE inhibitory peptide groups respectively. Captopril was added to make the final concentration 10-5 mol/L in the captopril group. NE was added to make the final concentration 100 μg/L in the NE group. ACE inhibitory peptide and NE were added to make the final concentration 300 mg/L and 100 μg/L in the ACE inhibitory peptide+NE group respectively. ③The state of cell growth was determined with cytometry. The contents of endothelial cells in the medium with different culture times were determined with radioimmunoassay. The expression of endothe lin mRNA was determined with reverse transcriptase-polymerase chain reaction. The expression of cellular endothelin protein was determined with immunohistochemical method.MAIN OUTCOME MEASURES: ①The influence of ACE inhibitory peptide on endothelial cell proliferation. ②The influence of ACE inhibitory peptide on the endothelin mRNA and endothelin protein.RESULTS: ①The influence of ACE inhibitory peptide on endothelial cell proliferation and endothelin secretion: Compared with the medium group,in the captopril and 150, 300, 600 mg/L ACE inhibitory peptide groups,the growth of endothelial cells was restrained and the endothelin content in the medium was lowered(P ＜ 0.01 or 0.05). NE could promote the growth of endothelial cells and the secretion of endothelin, but the cell density and endothelin content after treatment with ACE inhibitory peptide were similar to those in the medium group (P ＞ 0.05). ②The influence of ACE inhibitory peptide on the expressions of endothelin mRNA and protein in endothelial cells: Compared with the medium group, the expressions of endothelin mRNA and protein might be lowered in the captopril and 150,300, 600 mg/L ACE inhibitory peptide groups(P ＜ 0.01 or 0.05). The expressions of endothelin mRNA and protein could be up-regulated by NE.The gene expression after treatment with ACE inhibitory peptide was similar to that in the medium group(P ＞ 0.05).CONCLUSION: The ACE inhibitory peptides of different dosages can all restrain the growth of endothelial cells, lower the endothelin content, decrease the expression of endothelin gene and resist NE improved growth and secretion of endothelial cells in umbilical vein cell effectively.

BACKGROUND:Crainocerebral missile wound (CMW) is the common severe trauma of war. Environmental factor is the important factor that aggravates the development of sickness and threatens the life of the sick and wounded at early stage. The study on basic theory and treatment of CMW under hyperthermia and high-humidity is the major task in military medicine.OBJECTIVE: To observe the characters of bacterial growth in wound cavity and peripheral tissue after CMW in cats under hyperthermia and high-humidity so as to provide the reference data to the tissue repair and its functional recovery in CMW.DESIGN: Randomized controlled experiment.SETTING: Surgery Department of Neurology in Zhujiang Hospital affiliated to Southern Medical University(First Military Medical University).MATERIALS: The experiment was performed in Department of Tropical Medicine and Hygiene in Southern Medical University from April to May 2003. In the experiment, 24 hybrid cats were employed, of clean grade, of either sex, body-weighted (2.5±0.2) kg, provided from Experimental Animal Center of Southern Medical University. The animals were randomized into 4 groups, named the control at common temperature (5 cats), common temperature group (8 cats), hyperthermia and high-humidity group (8 cats) and blank control (3 cats).METHODS: After weighted, the cat was injected abdominally with 30 g/L pentobarbitol sodium solution at 30 mg/kg. After successful establishment of craniocerebral blindgut wound model, in common temperature group, the cats were placed in simulated climatic cabin at 25 ℃ and 50% relevant humidity for 6 hours and in hyperthermia and high-humidity group, the cats were placed in the hyperthermia and high-humidity environment for 6 hours. With biopsy, the fragmented brain tissue in wound tract and the brain tissue on the wall of wound tract far from 0-5 mm and 5-10 mm were collected and preparedinto successively natural solution and homogenate, and counting was done in 24 hours of bacterial culture to calculate bacterial content in wound cavity and peripheral tissue. In blank control, the cats were sacrificed with anesthesia and the material was collected directly, the rest steps were same as the control at common temperature.MAIN OUTCOME MEASURES: Bacterial content in wound cavity and peripheral tissue in each group.RESULTS: Totally 23 animals were employed in outcome analysis. Bacterial contents in same regions were different remarkably in different groups (F=171.423, P=0.000). It was indicated in paired comparison that significant difference happens between the control at common temperature, common temperature group and hyperthermia and high-humidity group and blank control successively (P ＜ 0.01). The difference was not significant in the comparison among the control at common temperature, common temperature group and hyperthermia and high-humidity group (P ＞ 0.05). Bacterial contents at different distances from the wound cavity were different remarkably in each group (F=14.865, P = 0.000).CONCLUSION: Hyperthermia and high-humidity does not impact significantly the bacterial growth of CMW in 6 hours and bacterial reproduction has not entered high-rate increasing stage yet, due to which, it is still safe for debridement repair.

Objective To investigate the risk factors associated with cranial nerve impairment in patients with tuberculous meningitis.Methods A total of 121 patients with tuberculous meningitis who were admitted to Huashan Hospital from 2000 to 2011 were reviewed retrospectively.Demographic data (gender,age),course of disease,initial results of cerebral spinal fluid (CSF) tests,occurrence of cranial nerve impairment and prognosis of these patients were collected.All the patients were followed up for at least 3 months,and for those with cranial nerve impairment,the minimum follow-up period was 1 year in order to judge the recovery of cranial nerve impairment.Multivariate analysis was performed to study the associated risk factors.Results Out of 121 patients,22 (18.2 ％)developed cranial nerve impairment.Nerves involved were abducens nerve,oculomotor nerve,optic nerve and auditory nerve,and impairment of single nerve occurred in 9 (40.9 ％),8 (36.4 ％),7(31.8％) and 1(4.5％) patient,respectively.Three cases had more than one group of cranial nerves involved,accounting for 13.6％ of the 22 patients with cranial nerve impairment.The incidence of conscious disturbance was significantly higher in patients with cranial nerve impairment than those without impairment (77 ％ vs 45 ％,P=0.020).Delay in diagnosis (OR =1.017,95 ％ CI:1.001-1.033,P=0.040) and occurrence of conscious disturbance (OR =3.242,95 ％ CI:1.142-9.205,P=0.027) were independent predictive factors of cranial nerve injury.During one-year follow-up,90.9％ of patients were fully recovered from cranial nerve impairment,with a median duration of 1 month (range 0.5-6.0 months).Conclusions Cranial nerve impairment is a common complication in patients with tuberculous meningitis.Delay in diagnosis and occurrence of conscious disturbance were independent predictive factors.Most cranial nerve impairment were reversible,and timely diagnosis and treatment are important ways to reduce complications.