Objective To observe the effect of the emodin thermosensitive hydrogel on collagenase in gingival crevicular fluid of patients with chronic periodontitis and to evaluate the clinical efficacy.Methods Forty patients with chronic periodontitis were selected.For each patient after scaring and root planning,the one teeth on one side in a person was assigned at the test group and treated with the emodin thermosensitive hydrogel in the pocket once a week for four weeks.The teeth on the other side were assigned as the control group,just with the primary periodontal treatment.The PLI、SBI、PD、AL、MD and content of collagenase in gingival crevicular fluid were examined at baseline,before administration and after administration four weeks.The COL-II level in GCF was detected using ELISA method.Results There were no significant differences in PLI、SBI、PD、AL、MD and content of collagenase in gingival crevicular fluid before the treatment(P ＞ 0.05).While there are some evidences that periodontal indexes dropped down and the type Ⅱ collagenase level in gingival crevicular fluid also declined after using the emodin thermosensitive hydrogel than the control group(t =3.46,4.02,4.18,3.03,2.79,4.29,all P ＜ 0.05).Conclusion Ultrasonic scaling using the emodin thermosensitive hydrogelas was more effective in reducing the type Ⅱ collagenase level in gingival crevicular fluid.And improving clinical parameters associated with periodontal health in patients with chronic periodontitis.

Background Panretinal photocoagulation (PRP) is an effective method for diabetic retinopathy (DR).However,PRP causes macular edema and visual impairment.The application of compound anisodine,a vascular dynamic drug can alleviate the adverse effect of PRP,but its effectiveness is not verified yet.Objective This study aimed to investigate the clinical therapeutic effect of compound anisodine on retinal functional damage following PRP in the eyes with non-proliferative diabetic retinopathy (NPDR).Methods A prospective cohort study was carried out from August 2013 to February 2014 in Beijing Tongren Hospital.One hundred and ten eyes with NPDR were included and PRP were performed.The operative eyes were randomized into the compound anisodine group (64 eyes) and control group (46 eyes).Compound anisodine solution of 2 ml was injected via temporal subcutaneous tissue since the second day after photocoagulation,and the injection was performed once per day for 4 courses in 3-day interval between each course (1 course for 14 days) in the compound anisodine group,and no any drug was used in the control group.The visual acuity,30° to 60° ring visual field and flash electroretinaogram (F-ERG) were examined before photocoagulation and 1 day,1 month and 2 months after photocoagulation to compare the retinal function between the two groups.ResultsThe vision acuity improved in 55 eyes in the compound anisodine group with the rate 85.94％,and that in the control group was 11 eyes with the rate 23.91％,showing a significant difference between the two groups (x2 =15.425,P =0.000).The mean sensitivities of visual field were (4.15 ± 1.42),(3.94 ± 1.40) and (4.81 ± 1.41) dB in 1 day,1 month and 2 months after photocoagulation in the compound anisodine group,which were significantly higher than (3.76± 1.52),(3.53± 1.55) and (3.64 ± 1.50) dB of the control group (t =1.39,1.44,1.15,all at P＜0.05).The amplitudes of a-wave and b-wave of F-ERG were all higher in the compound anisodine group than those in the control group in various time points after photocoagulation (all at P＜0.05).Conclusions The injection of compound anisodine via temporal subcutaneous tissue can relieve visual functional damage caused by PRP in NPDR eyes.

Objective To compare the therapeutic effects of 577 nm laser and 532 nm laser panretinal photocoagulation (PRP) in the treatment of non-proliferative diabetic retinopathy (NPDR).Methods This is a prospective controlled study.A total of 23 patients (41 eyes) with clinically diagnosed severe NPDR were randomly divided into two groups including 577 nm group (11 patients,20 eyes) and the 532 nm group (12 patients,21 eyes).577 nm group and 532 nm group received 3-4 times PRP with single-point mode.The laser energy and the number of laser spots were compared,and the laser energy density was calculated.Before treatment and 1 day,1,3,6 and 12 months after treatment,the changes of best corrected visual acuity (BCVA),average threshold sensitivity,a/b-wave amplitude of flash ERG (F-ERG) in the 30°-60° visual field,and fundus fluorescein angiography (FFA) were compared between two groups.Results The response rate was 85.0％ and 23.8％,respectively in the 577 nm and 532 nm group,the difference was statistically significant (x2 =15.43,P ＜ 0.05).Compare to the pre-treatment measurement,the average threshold sensitivity,a/b wave amplitude of F-ERG and the 30°-60°visual field were reduced at 1 day after treatment both in the 577 nm and 532 nm group,the difference were statistically significant (F =8.68,7.57,4.52;P＜0.05).The average threshold sensitivity (t=2.41,3.48,1.23),a/b wave amplitude (a wave:t=5.82,4.45,7.83;b wave:t=5.40,3.23,4.67) of F-ERG were different between 577 nm and 532 nm group at 3,6 and 12 months after treatment (P＜0.05).There was no retinal neovascularization and non-perfusion region in two groups at 6 months after treatment.The average laser power were (436.25 ±54.65) and (446.43 ± 35.61) mW,number of laser spots were (1952.95 ± 299.09) and (2119.05 ± 302.69) spots,energy density were (7.60±1.30) and (7.60±3.00) mW× ms/μm2 in the 577 nm group and 532 nm group,respectively.There was no difference in average laser power (t=1.35),number of laser spots (t=2.85) and energy density (t=1.99) between two groups (P＞0.05).Conclusion Compared with the 532 nm laser,577 nm laser treatment has better visual outcomes for NPDR patients.

Objective To compare the therapeutic effects of 577 nm laser panretinal photocoagulation (PRP) between one time multi-point scanning mode and multiple time single-point mode in the treatment of eyes with non-proliferative diabetic retinopathy (NPDR).Methods This is a prospective controlled study from August 2013 to February 2014.A total of 29 patients (46 eyes) with clinically diagnosed severe NPDR were randomly divided into two groups including the treatment group (12 patients,22 eyes) and the control group (17 patients,224 eyes).The treatment group received one time PRP of multi-point scanning mode,and the control group received 3-4 times of PRP with single-point mode.In order to evaluate its efficacy,the best corrected visual acuity was measured before treatment,and 1 day,1,2,6 and 12 months after treatment.The average threshold sensitivity,a/b-wave amplitude of flash ERG (F-ERG) in the 30 °-60 ° visual field,and fundus fluorescein angiography (FFA) of the change were also compared between the 2 groups.The laser energy and the number of laser spots were compared,and the laser energy density was calculated.Results The response rate was 86.4％ and 79.2％,respectively in the treatment and control group,the difference was not statistically significant (x2 =0.414,P＞0.05).Compare to the pre-treatment measurement,the average threshold sensitivity,a/b-wave amplitude of F-ERG in the 30 °-60 ° visual field were reduced at 1 day after treatment both in treatment and control group,the differences were statistically significant (P＜0.05).The average threshold sensitivity,a/b-wave amplitude of F-ERG were no difference between treatment and control group at 2m,6m and 12m after treatment (P＞0.05).The average laser power,number of laser spots and energy density were (537.50 ± 64.69) mW and (339.09 ± 132.09) mW,(1934.32 ± 426.38) points and (2061.42 ± 375.49) points,(0.35±0.12) mW o ms/μm2 and (1.95 ± 0.86) mW · ms/μm2 in the treatment group and the control group,respectively.The average laser power and energy density was statistically different between the 2 groups (P＜0.05),while the number of laser spots was no difference (P＞0.05).Conclusions 577 nm multi-point scanning laser can complete the PRP at one time,and achieve the same therapeutic outcomes with the single-point mode which need several times to complete the PRP in the eyes with severe NPDR,and have lower energy density,and thus relative minor function damage.

Objective To analyse the detection of The Heidelberg Retina Tomograph Ⅱ (HRT-II ) for macular diseases. Design Retrospective observational case series. Participants 110 patients(201 eyes). Methods Fifty-two normal eyes, 74 eyes with macular edema, 23 eyes with macular hole, 31 eyes with macular premembrane and 21 eyes with choroidal neovascularization were examined with macular edema module(MEM) of HRT-Ⅱ. Main Outcome Measures Edema index (E value), signal width value (W value) and features of reflectance pictures. Results In normal eyes, E value and W value of some areas in macula were partly associated with age(r=0.207-0.359). E value and W value in macular diseases were significantly different from normal eyes (P=0.000). HRT-II could display macular edema cysts, configuration and size of macular holes, extension of macular premembrane and its relationship with retina and druen or subretinal neovascularization in age-related degeneration. Conclusion The reflectance pictures of HRT-Ⅱ have characteristic appearances in different macular diseases, and the measurements of E value and W value altered in pathologic stage of macular diseases. Especially E value of central zone can reflect changes of retinal thickness and light reflectance in macula, and it is obviously different in macular edema.

Objective To observe the therapeutic effects of endovascular stenting on the patients with drop attacks caused by carotid artery or vertebra-basilar artery stenosis.Methods Two drop attacks patients,who were diagnosed with symptomatic carotid artery or vertebra-basilar artery stenosis by DSA,were performed endovascular stenting.Case one had four serious artery stenoses at basilar artery,left vertebra artery and subclavian artery.Case two had double internal carotid artery.Six stents were placed,and filter protection devices were used in case two.After operating,the flowing up was performed for nine months or two years.Results The clinical symptoms of two patients were disappeared after operation.Case one performed flowing up for 9 months after operation,but he died by infarction of brain stem for his irregular taking medicine for 3 months since 6 months after operation.During flowing up for 2 years,case two was no relapse and no restenosis by DSA peoformed at 1 year after operating.Conclusions Endovascular stenting is a safe and efficient method for treating the patients with drop attacks caused by carotid artery or vertebra-basilar artery stenosis.

Objective To evaluate the application value of scanning laser angiography with a wide-field contact lens system in the diagnosis of choroidal melanoma. Methods Twenty-four patients with choroidal melanoma were randomly divided into two groups, who underwent fundus fluorescein angiography and indocyanine green angiography scanning with the wide-field contact and non-contact lens system respectively in order to acquire the 150? wide-field and 30? view image data. The quality of the images was comprehensively evaluated. Results Satisfying images were acquired from all of the 24 patients. Wide-field contact lens system indicated the accurate adjacent relation between the lesion position and the other dissection mechanisms, and also provided the general information about the size of the tumor and the perfusion of fluorescien or indocyanine green in the blood vessels. At the same time, it enlarged the view scope 3-5 times, which make for the screening of the peripheral lesions. Conclusions Scanning laser angiography with a wide-field contact lens system has important application value in the diagnosis of choroidal melanoma.

Objective To observe the effect of ligustrazine injection combined with chemotherapy on common immunological parameters in patients with advanced hepatocellular carcinoma.Methods Eighty cases diagnosed with advanced hepatocellular carcinoma from January 2013 to January 2015 in the hospital were randomly divided into observation group and control group, 40 patients in each group.The control group received only conventional treatment of chemotherapy and observation group received ligustrazine injection on the basis of control group.The levels of interleukin-1 (IL-1), IL-4 and transforming growth factor beta ( TGF-β) wwere compared based on the record between two groups pre-and post-treatment.Results There were no significant differences between two groups in IL-1,IL-4 and TGF-βlevels pre-treatment.After treatment, the IL-1, IL-4 and TGF-βlevels in observation group were lower than those in control group [(41.4 ±11.8)vs (76.0 ±12.2)ng/L,(118.5 ±39.9)vs(223.0 ±47.3)ng/L,(6.7 ±3.2)vs(11.7 ± 2.6)ng/mL, respectively, all P<0.05].Conclusion Ligustrazine injection combined with chemotherapy has an exact effect on improving the immunological parameters associated with advanced hepatocellular carcinoma without significantly increasing side effects, it is worthy of further research and application.

Objective To research the Annexin V-nanoscale ultrasound contrast agents'preparation, ultrasound imaging and the ability to binding apoptosis cells of tumor in vitro.Methods The nanoscale bubble (Nanobubbles,NBs ) packaged the octaflouropropane (C3 F8 ) gas was prepared by thin film hydration.The Annexin V-Nanobubbles (AVNBs ) solutions was acquired through conjugating the biotinylated-Annexin V to the surface of the NBs by biotin-streptavidin bridging chemistry.The size and zeta potential of AVNBs were measured by NanoPlus-3 zeta/nano particle analyzer.The shift in size distribution of AVNBs bubbles was analyzed for the stability,after it was stored at 4 ℃ for different time. AVNB's shape were measured by scanning electron microscopy.The AVNBs bubble was measured using an ultrasound system for echogenicity in vitro,and SonoVue was for control.Finally,the ability of AVNBs binding with apoptosis cells of tumor in vitro was determine via the fluorescence microscope.Results AVNBs has a size distribution of (640.2±32.1 )nm,and a mean zeta potential of (-23.30 ±5.71 )mV.Its size remained relatively constant and appeared to show less size variation within the 24 h analysis period. AVNBs solutions were visible milky white and slightly suspension liquid with the naked eye.Under scanning electron microscopy,AVNBs were uniform hollow sperical cavitation bubble with small size and larger dispersibility in solution.The AVNBs and SonoVue solution had the same higher grayscale signal intensity by ultrasonic imaging.The AVNBs binded well with apoptosis cells of tumor in vitro,and the rate of binding was (97.55 ± 1 .30 )%.Conclusions The AVNBs particles prepared by method of thin film hydration have a nanoscale size,good stability and echogenicity.It can be targeted binding with the apoptosis cells of tumor in vitro.

Objective To study the clinical effect of different tracheal intubation in patients with severe brain injury.Methods 82 patients with severe brain injury were selected and randomly divided into observation group and control group,each group had 41 cases.The observation group was given the dexmedetomidine induction combined with surface anesthesia on the basis of endotracheal intubation,and the control group was given traditional endotracheal intubation.The effects of the two groups were compared.Results The intubation time of the observation group was (26.7 ±13.8)s,which was significantly lower than (41.6 ±17.9)s of the control group(t =4.221,P =0.000).There were no differences in cardiovascular response indices between the two groups before intubation(t =0.122,P =0.903;t =0.296,P =0.768;t =1.128,P =0.263).After 10min,HR and MAP levels were significantly lower in the observation group than those in the control group(t =3.326,P =0.0.001;t =2.354,P =0.021).In the observation group,HR,MAP after intubation were lower than before intubation(t =2.548,P =0.013;t =3.626,P =0.000),the SpO2 of the two groups was higher than that before intubation(t =30.622,P =0.000;t =38.797,P =0.000),there were no differences in HR and MAP before and after intubation in the control group(t =0.846,P =0.400;t =1.824,P =0.072).There were no differences between the two groups before intubation(t =0.183,P =0.856;t =0.000,P =1.000;t =1.132,P =0.261),CK -MB,cTnT,BNP were significantly lower than those in the control group after 12h,respectively(t =2.030,P =0.046;t =2.264,P =0.026;t =3.785,P =0.000).CK -MB, cTnT,BNP were significantly lower than the control group after intubation in the two groups(t =7.845,P =0.000;t =8.591,P =0.000;t =22.757,P =0.000;t =5.525,P =0.000;t =2.264,P =0.000;t =22.149,P =0.000).The BCS and SS scores in the observation group were significantly higher than those in the control group(t =5.739,P =0.000;t =5.264,P =0.000).Conclusion The dexmedetomidine induction combined with topical anesthesia based uplink tracheal intubation scheme has significant effect,safety is good,it is worth of clinical application.