Objective To examine the changes of matrix metalloproteinase-9 (MMP-9) and tissue inhibitors of metalloproteinase-1 (TIMP-1) in gingival crevicular fluid after conventional mechanical therapy of adult patients with chronic periodontitis. Methods Gingival crevicular fluid samples from 15 patients and 15 healthy subjects were taken with filter paper strips by intra-pocket method initially, respectively, 1 month after scaling and root planning. MMP-9,TIMP-1 levels were measured by immunoblotting. Results MMP-9 levels in patients were redueed significantly after treatment[(2.2±1.4)AU vs (1.2±0.9)AU ]. The clinical parameters were positive correlation with MMP-9 level. TIMP-1 levels in patients were increased significantly after treatment[(1.3±1.2)AU vs (3.7±2.2)AU]. The clinical parameters were negative torrelation with TIMP-1 level. Conclusion MMP-9, TIMP-1 levels can act as objective parameters to evaluate the effect of periodontal therapy.

Objective To study the diagnosis and treatment of syncope by analyzing its etiology.Methods Ninety-six syncope patients admitted to our hospital from 2014-01-01 to 2016-12-21were included in this study.The etiology of syncope was analyzed.Results Of the 96 syncope patients included in this study,50 (52.1 ％) were diagnosed with nerve-mediated reflex syncope,31(32.3％) with orthostatic hypotensive syncope,10 (10.4％) with cardiogenic syncope due to arrhythmia,coronary atherosclerotic cardiopathy or pulmonary embolism,5 (5.2％) with other diseases.Conclusion Nerve-mediated reflex,orthostatic hypotension and cardiogenic factors are the causes of syncope.Attention should thus be paid to syncope caused by nervous system diseases.Clarification of the risk factors for syncope helps to reduce its potential risk.

Objective To construct a scientific and objective assessment to value nurse′s ability of scientific research in order to provide an objective unified standard and operable method to value nurse′s ability of scientific research and provide a standard for medical institutions to select nurses of scientific research. Methods After searching literatures and interviewing 7 experts, Delphi method was used to construct primary variables of nurse′s ability of scientific research. Then a second interview was given to each of 18 experts. The variables were weighted using analytic hierarchy process. Results Variables to assess nurse′s ability of scientific research included 2 first grade indices, 9 second grade indices and 35 third grade indices. Questionnaire return rates for two rounds of interviews were 84.00%(21/25) and 85.71%(18/21), respectively. Degree of authority Cr was 0.938. Scores of variables′importance ranged at 4.06-4.96. Ratios of full scores ranged at 33.33%-94.44%. Variable coefficients ranged at 0.05-0.25. The weight coefficients of 3 first grade indices (scientific research accumulation, explicit ability of scientific research, and intrinsic ability of scientific research) were 0.475 and 0.525, respectively. Conclusions The nurse′s ability of scientific research assessment system based on Delphi method and analytic hierarchy process is scientific and objective. This system combines quantitative and qualitative variables. It thus can calculate the ability of nurse′s scientific research according to the three grade indices. It is operable to be used to assess the ability of nurse′s scientific research.

Objective To provide basis for the diagnosis,treatment,prevention and control of pertussis by analyzing serological test findings and clinical features of inpatients.Methods Serological test findings (including outpatients and inpatients) of suspected cases and medical records diagnosed as pertussis (severe group and non-severe group) were analyzed in Shandong Provincial Hospital Affiliated to Shandong University from January 1,2012 to December 31,2014.This retrospective study was conducted to explore the epidemiological characteristics,clinical manifestations,image manifestations of pertussis in recent years.Results The incidence of pertussis was obviously higher in 2014 than the previous 2 years,nearly 10 times than that of 2013;summer and autumn were high-occurrence seasons;pertussis was found predominately in children under 6 years old,as 68％-80％,and the majority of them were 3 months-1 year old and 4-6 years old,and there was a notable increase in children more than 6 years old in 2014;the clinical manifestations tended to be atypical,primarily spasmodic cough (79.01％,64/81 cases),cyanosis (60.49 ％,49/81 cases),vomiting after cough (35.80％,30/81 cases),conjunctiva haemorrhage (22.22 ％,18/81 cases) apnea or heart rate decrease(9.88％,8/81 cases),and whooping cough (7.41％,6/81 cases).There were significant differences(all P ＜ 0.05) in age (t =2.940),paroxysmal cyanosis (x2 =4.505),elevated white blood cell count (x2 =4.410),and lymphocyte percentage increase(x2 =7.830) between severe group and non-severe group.There was no statistical difference in sex(x2 =0.847),season (x2 =0.178),spasmodic cough (x2 =0.097),whooping cough (x2 =0.002),conjunctiva hemorrhage (x2 =0.395),apnea (x2 =0.395) and fever (x2 =0.301) between the 2 groups (all P ＞ 0.05).Mixed infection with mycoplasma was most common.Imaging manifestations of pertussis were not specific,and they might manifest uneven density,patchy inflammatory infiltrates and atelectasis.Conclusions The morbidity of pertussis is rising and atypical cases is increasing in these years,and severe cases are seen most frequently in small infants,it is necessary to perfect the laboratory test methods and immunization strategy.

OBJECTIVE:To establish a method for simultaneous determination of 5 effective components in Luohua zizhu dry extract. METHODS:UPLC-MS/MS was conducted. The separation was performed on an Zorbax Eclipse Plus C18 column with mo-bile phase of acetonitrile-water(gradient elution)at the flow rate of 0.3 mL/min. The column temperature was set at 40℃and sam-ple size was 2 μL. The analytes were detected in the multiple reaction monitoring(MRM)mode. Nitrogen was used as drying gas and atomized gas. The temperature and flow rate of drying gas were 325 ℃ and 6 L/min. The pressure of atomized gas was 45 psi. The temperature and flow rate of sheath gas were 350℃and 12 L/min. The voltage of capillary were 4000 V(+)and 3500 V(-). The voltage of nozzle was 500 V. RESULTS:The linear ranges of luteoloside,acteoside,quercetin,luteolin and rutin were 0.5048-252.4 ng/mL(r=0.9999),0.7124-356.2 ng/mL(r=0.9990),0.5094-254.7 ng/mL(r=0.9962),0.3030-151.5 ng/mL(r=0.9998) and 0.6022-301.1 ng/mL(r=0.9996),respectively. RSDs of precision,stability and reproducibility tests were all less than 3.0%. The limit of quantitation were 0.42,0.87,0.33,0.12,0.76 ng/mL. The recoveries were 97.99%-101.20%(RSD=1.3%,n=6), 96.50%-101.20%(RSD=1.7%,n=6), 94.81%-99.34%(RSD=1.7%,n=6), 97.54%-100.51%(RSD=1.2%,n=6), 93.37%-98.70%(RSD=1.9%,n=6),respectively. CONCLUSIONS:The method is simple,precise,stable and reproducible, and can be used for simultaneous determination of 5 effective components in Luohua zizhu dry extract.

Objective To investigate the effects of ulinastatin on the number of peripheral blood lymphocyte and the percentage of its subsets in patients with severe sepsis. Methods The scores of APECHE II and SOFA, the number of lymphocyte and the percentage of different subsets in these sepsis patients at different treatment time were measured. Results After treatment, the scores of APECHE II and SOFA of severe sepsis patients were decreased, the number of lymphocyte elevated and the percentages of different subset were corrected. Sepsis caused by Gram- positive pathogens had stronger suppression of peripheral blood lymphocyte and subsets compared with Gram - negative pathogens. Conclusion Patients with severe sepsis had less peripheral blood lymphocyte and abnormal subsets. Ulinastatin could help to correct such abnormality.

Objective To investigate the reliability of Pediatric Evaluation of Disability Inventory (PEDI) in China. Methods 21 children with cerebral palsy were assessed with PEDI by 2 raters respectively. The intrarater and interrater agreement was analyzed. The internal consistency of the PEDI was also calculated. Results The ICC of intrarater and interrater was 0.919～0.993. The Cronbach α was 0.9597～0.9711 in self care, 0.9569～0.9799 in mobility, 0.9419～0.9830 in social function.Conclusion PEDI is reliable and internal consistent.

ObjectiveTo study the effects of individualized scalp acupuncture based on the focus and syndrome differentiation in traditional Chinese medicine on mobility ability of children with spastic cerebral palsy. Methods55 cases were randomly divided into 2 groups: treatment group (n=29) and control group (n=26). Treatment group received individualized acupuncture combined with rehabilitation and the control group received Jin's acupuncture combined with rehabilitation for 3 month. They were assessed with the mobility domains of the Pediatric Evaluation of Disability Inventory (PEDI). ResultsThe improvement of PEDI scores was more in treatment group than in control group （P＜0.01）.ConclusionScalp acupuncture combined with rehabilitation has active effects on mobility abilities of children with spastic cerebral palsy, and the individualized acupuncture do better than the Jin's acupuncture.

Objective:To investigate the features of gait disorders in patients with idiopathic normal pressure hydrocephalus(iNPH).Methods:Clinical data of 42 patients diagnosed with iNPH admitted to the neurological department of Aviation General Hospital from March 2017 to July 2020 were consecutively collected.The features of gait disturbance and activity of daily living were retrospectively studied.Results:Of the 42 patients, 29 cases(69%)were males, aged(73.0±8.3)years, and 13 cases were females, aged(73.0±8.3)years old.The mean course of disease was(3.5±3.0)years.There were 90.5% of patients(38/42)complained of gait disorders, and 61.9%(26/42)had fall histories.All patients had gait abnormalities.The time for 3m-Timed Up and Go(TUG)test were(27.8±17.0)seconds, and the proportion of patients with the time for 3m-TUG less than 10 seconds, 10~20 seconds and more than 20 seconds were 5.9%(2/34), 35.3%(12/34)and 58.8%(20/34), respectively.In the 10-meter walking test, 8 patients needed assistance.Of the 34 patients who could walk independently, 94.1%(32/34)had tandem walking disturbed and tendency toward falling, 76.5%(26/34)had turning disturbed, 44.1%(15/34)had wide based stride and small steps, 29.4%(10/34)had trunk balance disturbed, 23.5%(8/34)had reduced foot-floor clearance, and 8.8%(3/34)had start hesitation, 97.6%(41/42)had abnormal step counting and 90.5%(38/42)had abnormal time evaluation.The proportion of patients with activity of daily living(Barthel Index)scores of(mild dependence), moderate dependence and severe dependence were 71.4%(30/42), 28.6%(12/42)and 0%(0/42). Of the 30 patients with mild dependence, 56.7%(17/30)had fall histories.Conclusions:In our study, all patients have gait dysfunction, which causes some impact on activity of daily living and a higher risk of falls.Gait slowness, tandem walking disturbed, turning disturbed, tendency toward falling, wide based stride and small steps are the most involved gait characteristics.Early assessment of gait disorders is of great significance in early diagnosis and the prevention of falls and living ability decline.