AIM: To study the changes of plasma atrial natriuretic peptide(ANP), endothelin-1 (ET-1) and serum cardiac troponin I(cTnI) levels and the effects of ANP and ET-1 on myocardium in crush injury rats. METHODS: Crush injury was produced in SD rats,the serum levels of cardiac enzyme and cardiac troponin I,plasma levels of ANP and ET-1 were studied by automated biochemical analyzer,automated chemiluminescence assay and radioimmunoassay. RESULTS: The plasma ET-1 level was much lower ,the levels of plasma ANP and serum cardiac enzyme and cTnI were much higher after crush injury than those of the control group( P

Objective To investigate the effect of fluctuant high blood glucose on the pathology profile and BCL-2,BAX expression in neurons of the hippocampus from diabetic rats.Methods The diabetic rat models were developed by injection with l% streptozotocin(STZ),followed by insulin administration.Regular insulin was used to set up fluctuant high glucose group model.After 12 experimental weeks,the expression of Fas protein in hippocampus was checked by immunohistochemistry,pathological changes and ultrastructure were observed by using light microscopy and electron microscopy in three groups.Results Compared with those in N group,the expression of BCL-2 in pyramidal cells of diabetic rat's hippocampus was lower,while that of BAX was higher(P

Objective To investigate the best exposure condition for reducing the radiation dose of the chest radiography and obtaining the good quality of images. Methods With different tube voltage (kVp), tube current & time (mAs), and focus-film distance(FFD) adopted, X-ray detecting phantom was exposed by means of automatic exposure control(AEC). The dosage absorbed in skin was detected; Spatial resolution capacity, low contrast resolution capacity and low contrast sensitive degree were tested. The space and density resolution capacity were tested. The chest image quality was appraised by the way of visual observation and the measure of film density. Results The different kVp and FFD were related to the emitting skin dose (ESD), the higher kVp and the farther FFD follows the lower ESD; the higher or lower mAs has no effect on the image resolution capacity , but it had effect on image noise. The density value and seeing effect of chest film with low dose had reached good image density and needs of diagnostics. Conclusion Under the condition of 120 kVp high voltage, FFD150cm, AEC reduced density and adjusting to the processing parameters of the CR chest images, the radiation dosage of the chest computed radiography can be reduced efficiently and the good quality of images can be obtained.

Objective To explore the clinical features of nervous system involvement of acquired immunodeficiency syndrome (AIDS).Methods A retrospective clinical analysis of 15 admitted AIDS patients with neurological involvement in our hospital from February 2002 to February 2008.Eight of them visited department of neurology for the first time.Results There were 4 cases of human immunodeficiency virus (HIV) encephalopathy, 1 of them appearanced as general chorea, 1 HIV-associated encephalopathy accompanied with myopathy; 1 progressive multifocal leukoeneephalopathy (PML); 1 PML accompanied with toxoplasmosis; 1 HlV-associated myopathy; 1 multicranial nerve injury companied with myelopathy; 1 peripheral neuropathy; 1 drug-associated neuromuscular disease; 4 meningoencephalitis and 1 brain abscess cases.Conclusion The manifestations and AIDS neurological involvement are varied.A close attention should be paid to screening.

We determined molecular characteristics of Listeria monocytogenes foodborne isolates in Hangzhou and investigated the characterization of local strains.Multi-locus sequence typing(MLST) and pulsed-field gel electrophoresis(PFGE) were applied to identify molecular types of Listeria monocytogenes isolates.Results showed that a total of 133 strains of 6 serotypes were divided into 19 MLST types including a new type ST767.ST9 and ST121 were the major ST types.There were 33 and 45 PFGE patterns characterized by AscⅠ and ApaⅠ.The molecular types of Listeria monocytogenes strains were widely distributed in Hangzhou.It is indicated that the major clusters were Lineage Ⅰ and Lineage Ⅱ which will cause listeriosis.The contamination of Listeria monocytogenes in food is serious in Hangzhou and the surveillance and management should be strengthened to prevent the food borne diseases.

Objective To investigate and analyze oral health status of inpatients with schizophrenia.Method We selected 105 patients from Beijing Anding hospital included hospitalization length 1-5 years group (39 cases) and hospitalization length over 5 years (55 cases) were investigated with Self-made questionnaire and assessment guide for psychiatric care (OAG-PC).Results Tooth loss and oral health status of schizophrenia inpatients were both poor.There was significant difference in the number of people with tooth loss (x2 =7.68,P ＜ 0.05) and mean number of tooth loss (F =9.20,P ＜ 0.05) between two groups.The OAG-PC total score (F=11.1,P＜ 0.05),odour from the mouth (F=4.34,P＜ 0.05),saliva (F=3.93,P＜ 0.05),mucous membranes (F=5.64,P＜ 0.05),teeth or dentures (F=5.34,P＜ 0.05),calculus on teeth (F=15.34,P ＜ 0.05),looseness of teeth (F =14.14,P ＜ 0.05),and No.of teeth in the lower jaw (F =7.70,P ＜ 0.05) in the schizophrenia inpatients with hospitalization length 1-5 years group was better than those with hospitalization length over 5 years,there were significant difference between two groups.There were no significant difference in lips (F =0.69,P ＞ 0.05),tongue (F =0.65,P ＞ 0.05),gums (F =1.87,P ＞ 0.05),appearance of teeth (F=1.52,P＞ 0.05),and No.of teeth in the upper jaw (F=3.58,P ＞ 0.05) between two groups.Conclusions Patients with schizophrenia are special vulnerable people.The more course of the disease was longer,the more the oral health status was worse.Tooth loss,calculus,and looseness of teeth are much more serious and will influence chew function seriously.Society,medical institutions,and families should pay more attention to the oral health status of patients with schizophrenia.And taking the preventative measures against poor oral health can improve quality of life of patients with schizophrenia.

Objective To evaluate the protective effect of astragaloside Ⅳ against ultraviolet B (UVB)-induced photodamage to human HaCaT keratinocytes,and to investigate its mechanisms.Methods Culturedimmortalized human HaCaT keratinocytes were divided into four groups:blank control group receiving untreated,UVB group irradiated with 50 mJ/cm2 UVB,astragaloside Ⅳ group treated with astragaloside Ⅳ,UVB + astragalosideⅣ group treated with astragaloside Ⅳ for 24 hours before and after 50 mJ/cm2 of UVB radiation.The concentration ofastragaloside Ⅳ ranged from 10 to 200 mg/L in cell proliferation assay,and according to the results of proliferationassay,20 mg/L was determined as the optimal concentration in the other assays.At 24 hours after UVB radiation,cellcounting kit-8 (CCK8) assay was performed to evaluate cellular proliferative activity,flow cytometry to determineintracellular reactive oxygen species (ROS) levels,and Western blot to measure the expression levels of p53,p38,matrix metalloproteinase-9 (MMP-9) and high mobility group Al (HMGA-1) protein in HaCaT cells.ResultsCompared with the control group,astragaloside Ⅳ at 10 and 20 mg/L had no inhibitory effect (F =1.32,P ＞ 0.05),while astragaloside Ⅳ at 50,100 and 200 mg/L showed significantly inhibitory effect (F =20.20,P ＜ 0.05),on theproliferation of HaCaT cells.In addition,cellular proliferative activity in the UVB group was significantly lower thanthat in the control group (F =99.00,P ＜ 0.01).Compared with the UVB group,cellular proliferative activityincreased to different degrees in HaCaT cells treated with both UVB and astragaloside Ⅳ of 10-200 mg/L (F =19.08,P ＜ 0.01),with the strongest increase observed in those treated with UVB and astragaloside Ⅳ of 20 mg/L.Further experiments revealed reduced intracellular ROS levels in the UVB + astragaloside Ⅳ (20 mg/L) groupcompared with the UVB group (t =21.12,P ＜ 0.01).Western blot assay showed that the expression levels of p53,p38,MMP-9 and HMGA-1 protein were significantly higher in the UVB group than in the control group (all P ＜0.01),but significantly lower in the UVB + astragaloside Ⅳ (20 mg/L) group than in the UVB group (all P ＜ 0.01).Conclusion Astragaloside Ⅳ can effectively protect keratinocytes from UVB-induced photodamage.

Aim Paclitaxel(PTX)has shown an effect against human cancer. However, serious drawbacks hamper PTX clinical use.Overcoming paclitaxel limi-tations is one of the best approaches to enhance water solubility.Methods In this study,water-soluble pa-clitaxel prodrug was prepared,folic acid-polyethylene glycol-glutamic-paclitaxel (FA-PEG-Glu-PTX ) com-posed of folic acid (FA,target),amino acids (Glu, linker),and polyethylene glycol(PEG)in order to im-prove the solubilization and stability. The chemical structure and physicochemical property of prodrug were measured by LC-MS,solubility,drug release rate to e-valuate the antitumor activity and cytotoxicity of FA-PEG-Glu-PTX.MTT assays were conducted on MDA-MB-231,MCF-7,A549 and HELF cell lines.FA-PEG-Glu-PTX prodrugs were labeled with 5 amino flu-orescence visible fluorescent dye (5 AF ) for fluores-cence microscopy.Results The successful conjugation of FA-PEG-Glu-PTX was confirmed by LC-MS,and had better water solubility,release rate curve.In vitro studies indicated that foliate receptor(FR-α)mediated uptake of PTX-conjugated multi-small molecules carri-ers induced highly targeting ability,and antitumor ac-tivity,as well as reduced side toxicity effects of PTX. Conclusion FA-PEG-Glu-PTX has a good antitumor activity.

BACKGROUND: Due to glucocorticoid (GG) is used wildly on clinic, incidence rate of steroid-induced osteonecrosis of femoral head is increased.Apoptosis of bone cells plays a key role in steroid-induced osteonecrosis of femoral head during earlier period.OBJECTIVE: To induce models of femoral head necrosis of rabbits by steroid steroid so as to observe the effect of integrated Chinese and western medicine on preventing apoptosis of steroid-induced osteonecrosis of femoral head.DESIGN: Randomized controlled animal study.SETTING: Pharmacological Department and Anatomy Department of Medical College of Shaoguan University, Pathological Department of Yuebei People's Hospital of Guangdong Province.MATERIALS: The experiment was carried out at the Central Laboratory of Medical College of Shaoguan University from April to July 2005. A total of 30 adult New Zealand white rabbits were selected and randomly divided into blank control group, steroid group and preventive medicine group with 10 in each group.Xuesai tongpian, main component of panax notoginseng saponin, was provided by Yuxi Weihe Pharmaceutical Company Limited (batch number: 200410290; 25 mg/pill); zhibituo pian, main component of shanzha, baizhu, hongqu, was provided by Chengdu Di 'ao Jiuhong Pharmaceutical Factory (batch number: 0410063, 350 mg/pill); alendronate, main component of 4-amido-1-hydroxy butylidene-1, was provided by Hainan Mankexing Pharmaceutical Factory (batch number: 040501, 5 mg/pill); dexamethasone sodium phosphate injection was provided by Henan Tiankang Pharmaceutical Company Limited (batch number: 040905, 5 g/L).METHODS: ① One week later, rabbits in steroid group and preventive medicine group were injected with 1 mL dexamethasone sodium phosphate solution twice a week to establish models of steroid-induced osteonecrosis of femoral head. Animals in blank control group did not model and were injected with the same volume of saline at the same time point. ② Rabbits in preventive medicine group were prefused with 25 mg xuesai tong, 350 mg zhibituo and 5 mg alendronate at the same time for 8 weeks. Animals in steroid group and blank control group did not treat with any medicine. Benzylpenicillin was injected into muscle of animals in each group for infection prevention with the dosage of 50 000 u each rabbit twice a week. ③ One week after discontinue, apoptosis of femoral head was detected with in situ end-labeling (ISEL) method. Ten areas were selected from each carry sheet glass to calculate numbers of apoptosis in every 100 cells. Pathological changes of ultrastructure were observed with double staining of uranium acetic acid and lead citromalic acid.MAIN OUTCOME MEASURES: ① Results of apoptosis of femoral head; ② Results of pathological changes of ultrastructure of femoral head under electron microscope.RESULTS: A total of 30 adult New Zealand white rabbits were selected in this study. Because one rabbit in preventive medicine group died during process, 29 rabbits were involved in the final analysis. ① Results of apoptosis of femoral head: Buffy granulosum positive cells, i.e. apoptosis cells,were observed in nucleus in steroid group. Numbers of apoptosis every 100cells were more in steroid group than those in blank control group and preventive medicine group (24.14±5.46, 2.47±0.76, 8.12±3.23, q=8.76, q=13.45, P ＜ 0.01), and numbers in blank control group were similar to those in preventive medicine group (P ＞ 0.05). ② Results of pathological changes of ultrastructure of femoral head under electron microscope: Volume of nucleus in steroid group was decreased; chromatin was aggregated at edge; part of chromatin was dark and thick; density of electron was increased; structure was unclear; characteristics of apoptosis were shown. Nuclear membrane in preventive medicine group was complete under electron microscope, chromatin was steady, and the nucleus was accounted for one third of cell.CONCLUSION: The integrated application of xuesai tong,, zhibituo and alendronate can inhibit hormonal-induced apoptosis of femoral head after necrosis of femoral head induced by steroid steroid.

Objective To explore the effect of hospital-community-family integrated care on the physical and mental function of discharged stroke patients. Methods Sixty stroke patients discharged from the third people′s hospital of Bengbu were recruited from January 1, 2014 to April 30, 2015. The patients were divided into intervention group and control group by random number table, and 30 patients in each group. Rehabilitated nursing intervention including feeding, language, physical and psychological and psychological trainings were conducted in intervention group, while participants in control group only received routing nursing service. Then, the Barthel index scores, Fugl-Meyer motor function scores and Hanmilton Depression Scale (HAMD) scores were assessed in both two groups pre-intervention and six months after intervention. Results Intervened before and 6 months after the intervention group of patients with Barthel index score respectively (44.17 ± 11.21) points, (72.47 ± 15.36) points, Fugl-Meyer motor function scores were respectively (43.47±16.22) points, (62.39 ±15.41) points, HAMD scores were (26.81 ± 8.24) points, (17.42 ± 6.29). The difference was statistically significant (t=8.16, 4.64, 4.97, P <0.01). In contrast, the control group of patients with Barthel index score changes showed statistical significance (t=1.94, P=0.03), HAMD score also had differences (t=1.86, P=0.04) and the change was far less than the intervention group. Between the two groups after the intervention compared with Barthel index score, Fugl-Meyer motor function score and HAMD also had statistical significance (t=5.81, 3.55, 2.35, P = 0.00). Conclusions The rehabilitated nursing intervention has evident effects onliving environment,daily life, physical and mental function in discharged stroke patients, and the intervention approaches we used have certain clinical practice value.