Objective To find out the difference in expression of glial fibrillary acidic protein and neuron-specific enolase in hippocampi and olfactory bulb of Alzheimer's disease rats,and the relationship between olfactory and Alzheimer's disease.Methods Adult rats,the expression of GFAP and NSE in hippocampi and olfactory bulb was measured by immuhistochemical after a single intracerebroventricular injection of ?-amyloid peptide,and change of these protein in olfactory.Results Comparing the hippocampi and olfactory of model and control,the expression of GFAP in model group increased evidently,the expression of NSE descended animals.Conclusion There is significant difference in olfactory system between Alzheimer's disease model and control group rats.

Objective:To investigate the stability of flurbiprofen axetil lipid microspheres injection combined with 0. 9% sodium chloride injection or 5% dextrose injection, and provide theoretical basis for the clinical application. Methods:The content changes of flurbiprofen axetil in the mixture of flurbiprofen axetil lipid microspheres injection and 0. 9% sodium chloride injection or 5% dextrose injection were determined in 5 h at 25℃ away from light, and the changes in the appearance and particle size of flurbiprofen axetil lip-id microspheres were investigated. The changes in the appearance and particle size of flurbiprofen axetil lipid microspheres in the mix-ture of flurbiprofen axetil lipid microspheres injection and 0. 9% sodium chloride injection before and after freezing and thawing were also investigated. Results:The appearance, particle size and content had no significant changes in all mixtures in 5 h at 25 ℃ away from light. The appearance and particle size of flurbiprofen axetil lipid microspheres in the mixture before and after freezing and thawing had no significant changes as well. Conclusion:The mixture of flurbiprofen axetil lipid microspheres injection and 0. 9% sodium chlo-ride injection or 5% dextrose injection is stable in 5 h away from light.

OBJECTIVE To study the characteristic of auditory brain stem responses (ABRs) to air-and bone-conducted tone pip recorded in adults with normal hearing, to access the feasibility of estimating pure tone behavioral thresholds using tone-pip evoked ABR and to examine the effects of bone-conducted ABR to tone pips on differentiating the type of hearing loss. METHODS Air-and bone-conducted ABR to tone pips were recorded from otologically normal persons (n=20, male/female 10/10) using Smart EP auditory evoked potential system. RESULTS ABR thresholds to air-conducted tone pips were (24.8?7.3) , (16.1?6.5) , (13.5?5.5) , (11.9?5.8) dB nHL for 0.5, 1, 2 and 4 kHz, and were (9.5?9.3) , (13.4? 6.6) , (12.2?6.0) , (12.2?7.2) dB higher than the pure tone behavior thresholds respectively; The ABR thresholds to bone-conducted tone pips were (28.4?9.2) , (19.0?7.4) , (15.1?7.7) , (13.6?6.4) dB nHL for 0.5, 1, 2 and 4 kHz, and were (32.0?10.3) , (19.4?10.0) , (14.2?8.2) , (16.1 ?6.9) dB higher than the pure tone behavioral thresholds respectively. There were no statistically significant differences between the ABR thresholds to AC and BC tone pips. The wave forms of tone-evoked ABR were similar to those of click-evoked ABR. The detectability of Wave Ⅰ and Wave Ⅲ decreased with the decrease of tone pip frequency. The wave latencies of tone-pipevoked ABR were longer than those of click-evoked ABR, and they prolonged with the decrease of tone pip frequency. The Wave Ⅴ latency of ABR to BC 0.5 and 1 kHz tone pips at thresholds were longer compared that to AC. CONCLUSION The thresholds of tone-pip evokedABR were useful in estimating the pure tone behavioral threshold and bone-conducted tone-evoked ABR might be helpful in differentiating the type of hearing loss.

Objective To compare the accuracy of auditory brain stem response (ABR) thresholds to tone burst and tone burst ipsilaterally masked by notched noise in estimating puretone thresholds of adults with normal hearing.To study characteristics of ABRs evoked by tone burst and tone burst in notched noise of two different intensities.These three kinds of ABRs were named as follows:tb-ABR,amtb-ABR and bmtb-ABR.Methods Puretone audiometry,ABRs to tone burst and tone burst ipsilaterally masked by notched noise of different intensities were tested in 20 adults (totally 40 ears) with normal hearing.Results ①Thresholds for tb-ABR,amtb-ABR and broth-ABR of each frequency all approximated each other,and there were no statistically significant differences between them.②The mean differences between puretone thresholds and thresholds for tb-ABR,amtb -ABR and bmtb-ABR of each frequency were all less than 15 dB.Those mean differences of different ABRs of the same frequency were approximate to each other and had no statistically differences.③No matter what kind of ABR was tested,the latencies of wave V shortened with increase of frequency in each ABR at the same intensity.When the intensity and frequency of the tone burst were the same,the latency of wave V of tb-ABR was always statistically shorter than that of amtb-ABR.The latter was also always statistically shorter than that of bmtb-ABR.Conclusion Thresholds for ABRs to tone burst and tone burst ipsilaterally masked by notched noise were useful in predicting puretone thresholds.

Objective To determine the level of awareness about thrombolytic therapy for acute ischemic stroke among community residents in Yuzhong district,Chongqing,China.Methods We used multi-stage sampling to select 1500 households distributed in 3 Street of Yuzhong district,and then one member of each household answered the survey.A trained interviewer conducted a face to face survey about the questions regarding stroke warning signs and thrombolytic therapy in acute stroke.Results A total of 1101 participants completed the survey.Only 257 (23.3％,95％ CI 20.8-25.8) participants were aware of thrombolytic therapy for acute stroke and 59.9％ of them (154/257,95％ CI53.9-65.9) knew the time window of thrombolytic therapy.The rate of thrombolytic therapy awareness was higher among people with young age,well-educated,with higher household income with health insurance,and those who knew all 5 stroke warning signs.People aged ≥75 years had higher rate of awareness of the time window.Multivariate logistic regression analysis showed that age,education level,health insurance and knowledge of stroke warning signs were independently associated with the rate of thrombolytic therapy awareness.Conclusions In this population-based survey the community residents had poor awareness of thrombolytic therapy for acute ischemic stroke.It is necessary to improve the level of public knowledge about thrombolytic therapy for acute stroke by health education.

Objective To evaluate the effect of oxidative injury induced by peroxide oxidase on Klotho expression in mouse renal tubular epithelial cells (TCMK-1) and to explore the possible pathway.Methods TCMK-1 cells were exposed to H2O2 of different concentrations.Reactive oxygen species (ROS) was examined byflow cytometrry.Cell viability was assessed by CCK-8.Cell apoptosis was evaluated by flow cytometry and Hoechst 33258 staining.The expression of Klotho,apoptosis-associated proteins and anti-oxidant enzymes were determined by Western blotting.Results Compared with control group,after H2O2 stimulating TCMK-1 cell,ROS was dramatically elevated (all P ＜ 0.05) and the expression of anti-oxidant enzymes,SOD2 and CAT went down (all P ＜ 0.05);the expression of Klotho was inhibited (all P ＜ 0.05);cell viability of TCMK-1 cells was decreased (all P ＜ 0.05) in a dose-dependent manner (0.3 to 0.9 mmol/L);cell apoptosis was significantly increased in TCMK-1 cells following the concentration of H2O2 (all P ＜ 0.05);Bax/Bcl-2 and the phosphororation of JNK and p38 were obviously elevated in TCMK-1 by H2O2 induction (all P ＜ 0.05).Conclusion Oxidative injuries induced by H2O2 significantly suppresses the expression of Klotho in TCMK-1 cells.And cell apoptosis was increased,p38 and JNK pathway was activated.

Aim To investigate the effect of berberine on the expression of nephrin, podocin and intergrinα3β1 in diabetic nephropathy ( DN ) rat model, and further probe in to the renoprotective effects of berber-ine and its potential mechanisms. Methods The rat model of DN was induced by intraperitoneal injection of streptozotocin ( STZ ) after fed with high-sugar and high-fat diet for six weeks. The rats were assigned into 6 groups randomly: normal control group, DN model group, BBR (50,100 and 200 mg·kg-1 ) treatment group and enalaprilat positive control group ( 1 mg · kg-1 ) . The distribution and expression of kidney podocyte related proteins nephrin, podocin and interg-rinα3β1 were detected by immunohistochemical meth-od following electron microscopy observation ( × 1000 ) and high magnification observation( × 400) and West-ern blot. Results The podocyte related protein neph-rin, podocin and intergrin α3β1 were mainly distribu-ted in podocyte, but slightly different. Compared with normal control group, the expresion of podocyte related protein nephrin, podocin and intergrin α3β1 was de-creased obviously; compared with model group, BBR (100 and 200 mg·kg-1 ) treatment group could sig-nificantly suppress the abnormalities of pathological changes of the kidney and upregulate the expression levels of podocyte specific protein nephrin, podocin and intergrin α3β1 in the kidney of diabetic rats with nephropathy. Conclusions Berberine could alleviate the abnormalities of kidney pathological changes and proteinuria production in the DN model rats, which may be related to the upregulation of the expression of the podocyte proteins nephrin, podocin and intergrinα3β1.

Objective To compare the results of TEOAE and DPOAE in the same population of normal newborns, to provide information on choosing appropriate screening tools.Methods A two-steps protocol was taken with the first screening during the first 48 to 72 hours of birth and rescreened from one to two months old if the newborns failed the first screening.For each step of screening, TEOAE and DPOAE were performed simultaneously using AccuScreen hearing screening instrument (Madsen-GN Otometrics, Taastrup, Denmark).A total of 1 062 normal newborns (F/M=508/554) delivered in Peking Union Medical College Hospital were enrolled in this research for the first screening.Infants who failed either TEOAE or DPOAE screening in the first screening were referred to a second screening.Among them, 135 performed both DPOAE and TEOAE in the second step.The newborns who failed the second screening would receive ABR when they were 3 months old.Results In the first screening,the failure rate for TEOAE was 11.0% (117/1 062) and 13.7% (145/1 062) for DPOAE.In the second screening step, the failure rates were 17.8% (24/135) and 20.7% (28/135) for TEOAE and DPOAE, respectively.Chi-square and Fisher's test showed that the failure rates of DPOAE were significant higher than TEOAE for both steps (P<0.001).The agreements between TEOAE and DPOAE were 96.0% and 95.6% for the first and second steps respectively, and the kappa values were 0.817 and 0.857.As to the average time taken to accomplish the screening for one ear, TEOAE was 24±25 s and DPOAE was 40±34 s during the first screening;in the rescreening, TEOAE was 52±41 s and DPOAE was 73±62 s.Paired-t tests showed that the differences between DPOAE and TEOAE testing time were statistically significant (P=0.000) in both screening steps.Finally, 7 newborns (10 ears) were diagnosed conductive hearing loss(except 1 ear was sensorineural hearing loss).Conclusion As a screening tool, TEOAE got lower refer rates and took less time than DPOAE implicating TEOAE a better screening tool for normal neonates.

AIM:To investigate the effect of puerarin on acute high glucose-induced attenuation of ACh relaxation in isolated rat aortic rings, and to elucidate its underlying mechanism. METHODS: The thoracic aortic rings with endothelium of male Sprague-Dawley rats were mounted on a bath system. Isometric relaxation of aortic rings was measured. RESULTS: ① After incubation with high concentration of glucose (44 mmol/L), the vascular relaxation responses to ACh decreased. ② After coincubation with puerarin (10-10-10-8 mol/L) and high glucose, the high glucose-induced attenuation of ACh relaxation responses of artery was partly inhibited in a dose-dependent manner. ③ After incubation with puerarin for 2 h, the HO-1 activity of thoracic aorta increased. ZnPPIX (an inhibitor of heme oxygenase-1) abrogated the protective effect of puerarin. CONCLUSION: Puerarin prevents the acute high glucose-induced attenuation of endothelium-dependent relaxation in aortic rings. The mechanism might be involved in the activation of heme oxygenase-1.

Objective To study the effect of electroencephalograph (EEG) bionic electrical stimulation at Wangu (GB12), Tianzhu (BL10), Neiguan (PC6) on cerebral blood flow and metabolism in patients with persistent vegetative state (PVS). Methods 60 patients with PVS were divided into observation group (n=30) and control group (n=30) according to the random number table. The control group received routine treatment, including basic management, hyperbaric oxygen therapy, awaking medicine, sensory stimulation, and so on; while the observation group received EEG bionic electrical stimulation at bilateral Tianzhu, Wangu (cheif electrodes) and Neiguan (auxiliary electrodes) in addition. They were treated for 30 days. They were assessed with the PVS score, and observed with transcranial Doppler ultrasound (TCD) and magnetic resonance spectroscopy (MRS) one day before and one day after treatment. Results The incidence of improvement was 86.67% in the observation group, more than 60.00% in the control group (P<0.05). The difference of blood flow velocity before and after treatment (ΔVm) of anterior-middle cerebral artery was more in the observation group than in the control group respectively (P< 0.001), as well as those of posterior cerebral-vertebral-basilar artery (P<0.01). The N-acetyl aspartic acid/creatine (NAA/Cr) increased more in the observation group than in the control group respectively (P<0.01), and the choline/creatine (Cho/Cr) decreased more (P<0.01), after treatment. Conclusion EEG bionic electrical stimulation can improve the cerebral circulation and metabolism in patients with PVS, which may associate with the wake promoting.