To evaluate the efficacy of interferon inhalation by PARI inhaler boy with bronchiolitis, 110 children were randomly divided into two groups. Group 1 included 64 cases who received interferon inhalation by PARI inhaler boy(made in Germany) and the other 46 patients who didn' t received interferon by PARI inhaler boy served as group 2. The effects were compared between the two groups in term of wheezing rale disappearance time, rale absorbing time and hospital stay time. Our results showed that wheezing rale disappearance time in group 1 was shorter than that in group 2( t = 6. 143, P＜ 0.01 ); rale absorbing time in group 1 was significantly shorter than that in group 2 ( t = 2.03, P＜0.05); hospital stay time in group 1 was significantly shorter than that in group 2( t = 3. 195, P＜0.0). It is concluded that interferon inhalation by PARI inhaler boy is an effective auxiliary treatment forbronchiolitis.

Objective To explore the clinical value of detecting serum cystatinC (CysC) combined with β2‐microglobulin(β2‐MG) in assessing early kidney damage for patients with hypertensive disorder complicating pregnancy (HDCP) .Methods Totally 108 patients with HDCP were selected ,including 41 cases of gestational hypertension ,30 cases of mild preeclampsia ,37 cases of se‐vere preeclampsia ,moreover ,40 normal pregnant women were selected as control .The levels of serum CysC ,serum β2‐MG and ser‐um creatinine(Cr) were tested with automatic biochemistry analysator .Results The levels of serum CysC and β2‐MG in gestational hypertension group ,mild preeclampsia group and severe preeclampsia group were significantly higher than the control group (P<0 .05) .There were significantly differences among gestational hypertension group ,mild preeclampsia group and severe preeclampsia group of levels of CysC and β2‐MG (gestational hypertension group < mild preeclampsia group < severe preeclampsia group ,P<0 .05) .The level of Cr of severe‐preeclampsia group was significantly higher than the control (P< 0 .05) ,but it had no significant difference among gestational hypertension group ,mild preeclampsia group and control group (P> 0 .05) .In addition ,the results of correlation analysis showed there was a positive correlation among Cys‐C ,β2‐MG and Cr in the patients with HDCP .Conclusion There will be an important clinical value to evaluate the progression of the disease and diagnose early kidney damage through joint detectation of serum Cys‐C ,β2‐MG and and Cr .

Objective To investigate the clinical effectiveness of dynamic hip screw (DHS) internal fixation and proximal femoral nail (PFN) internal fixation for intertrochanteric femoral fractures.Methods One hundred and sixty-five patients with intertrochanteric femoral fractures were randomly divided into 2 groups,85 patients were in DHS group and 80 patients were in PFN group.The clinical effectiveness,index in operative procedure and complications were compared between two groups.Results The fine rate of DHS group and PFN group was 75.3％(64/85 ) and 83.8％( 67/80 ) (P ＞ 0.05 ).The indexes of function recover time,fracture healing time,amount of bleeding in operation,operation time in PFN group were significant lower than those in DHS group [(54.3 ± 11.7 ) d vs.(92.6 ± 10.5 ) d,(63.8 ± 12.2) d vs.(71.3 ± 10.6) d,(453.3 ± 50.7) ml vs.(627.5 ± 46.8) ml,(77.9 ± 25.2) min vs.( 115.7 ± 32.8) min](P＜0.05 ).The rate of short-term complications was 16.2％ (13/80) in PFN group,and 12.9 ％ ( 11/85 ) in DHS group(P ＞ 0.05 ).The rate of long-term complications was 1.2％( 1/80 ) in PEN group and 4.7％(4/85 ) in plts group (P ＜ 0.05).Conclusions As the treatment of intertrochanteric femoral fractures,PFN internal fixation has less bleeding and better efficacy,and can improve function recovery.PFN internal fixation is a better method for unstable femoral fracture.

ABSTRACT:Objective To construct V-set and immunoglobulin domain containing 4 (Vsig4)nanobodies (Nbs) as specific macrophage probes so as to use them as molecular probes of macrophagocytes.Methods A nanobody phage library was generated by using peripheral blood lymphocytes isolated from an alpaca immunized with recombinant Vsig4 protein.After three rounds of selection against recombinant Vsig4.The Nbs were subjected to sequencing and genome alignment to obtain VHH sequence.Nbs were isolated and tested for Vsig4 specificity in an ELISA using recombinant Vsig4.The affinity capacity of Nbs was verified by the cell line stably expressing Vsig4. Results A nanobody phage library with an estimated 7.27 × 107 clones with 70% insertion was successfully constructed.Totally 1 3 6 Vsig4-positive clones were sequenced and aligned according to different CDR3 sequences. In summary,1 5 Vsig4 nanobodies were obtained and grouped into 3 different CDR3 epitopes.The affinity of representing nanobody and Vsig4 was analyzed via ELISA;Nb1 1 9 showed the highest affinity against both recombinant and native Vsig4.Conclusion We successfully constructed and screened Vsig4 specific nanobody number 1 1 9 with high affinity and specificity.It can help with macrophage detection and in vivo monitoring.

Research collaboration and interdisciplinary integration is anecessary trend of the development of science and technology,and is especially true in biomedical field.This paper describes the interdisciplinary practice of the projects at Peking University Health Science Center in recent years.Problems and the efficiency of the management is also analysed.

AIM: To study the relationship between renin-angiotensin-aldosterone system and hypertension in coal miners. METHODS: The coal miners received questionnaire investigation and their blood pressure, height and weight were measured, plasma renin activity(PRA), plasma angiotensin Ⅱ(AngⅡ) and aldosterone(ALD) were tested by means of radioimmunoassay in coal miners with hypertension and nor-hypertension. RESULTS: It was found that levels of PRA,AngⅡ and ALD were significantly higher in hypertensive group than in nor-hypertensive group(all P

Objective To preliminarily test the value of gastroesophageal reflux disease questionnaire (GERD-Q) in auxiliary diagnosis of gastroesophageal reflux disease(GERD) in infants and young children.Methods From January 2011 to February 2014,148 infants and 87 young children with suspected GERD symptoms were enrolled in the outpatient and inpatient departments of Wuhan Women and Children's Medical Care Center.The diagnosis of GERD were made through 24 h esophageal pH monitoring and upper gastrointestinal hysterosalpingography.Those with any examinations being positive were brought into GERD group,and the others into the control group.All cases had been surveyed with GERD-Q.Using SPSS17.0 statistical software,the ratio was compared with chi-square test,and the difference of the scores between groups with t test.Results In infants (1 to 11 months),the individual symptom scores (ISS) of the 6 symptoms in the GERD group (n =111) were all higher than those in the control group (37 cases) (P ＜ 0.05),and the composite and symptom scores (CSS) [(131.43 ± 66.56) scores] in the GERD group was higher than that [(33.70 ± 40.03) scores] in the control group (t =8.42,P ＜ 0.05).In young children (1 to 3 years old),the ISS in the GERD group(55 cases) were all higher than those in the control group(32 cases),and the CSS[(98.58 ± 66.75) scores] in the GERD group was also higher than that [(28.50 ± 35.95) scores] in the control group(t =5.49,P ＜ 0.05).Conclusions There is a good correlation for age-specific GERD-Q to distinguish GERD symptoms in infants and young children,which is suitable for the assessment of GERD.

Objective:To investigate the correlation between neutrophil to lymphocyte ratio (NLR) and 30-day clinical outcomes in patients with spontaneous cerebral hemorrhage and whether adding NLR to ICH score improve the accuracy of predicting poor outcomes.Methods:Patients with spontaneous intracerebral hemorrhage admitted to the Department of Neurology, the Second People's Hospital of Hefei from March 2018 to April 2019 were enrolled retrospectively. The demographic and baseline clinical and imaging data were documented. The absolute neutrophil counts and absolute lymphocyte counts within 24 h of onset were obtained and NLR was calculated. At 30 d after the onset of cerebral hemorrhage, the modified Rankin Scale was used to evaluate the outcomes. Good outcome was defined as ≤2, and poor outcome was defined as >2. Multivariate logistic regression analysis was used to determine the independent risk factors for poor outcomes. The receiver operating characteristic (ROC) curve was used to evaluate the predictive value of baseline NLR, ICH score and NLR+ ICH score for poor outcomes in patients with spontaneous cerebral hemorrhage. Results:A total of 159 patients with spontaneous cerebral hemorrhage were enrolled, including 106 males (66.67%), age 62.29±15.10 years. Neutrophil count was (7.30±3.95)×10 9/L, lymphocyte count was (1.41±0.67)×10 9/L, and NLR was 6.94±7.66. Baseline hematoma volume was 17.93±25.87 ml, median ICH score 0 (interquartile range 0-1). The outcomes of 60 patients (37.7%) were poor at 30 d. Univariate analysis showed that coronary heart disease, systolic blood pressure, diastolic blood pressure, high-sensitivity C-reactive protein, fasting blood glucose, white blood cell count, neutrophil count, NLR, hematoma broken into the ventricle, hematoma volume, NIHSS and ICH scores in the poor outcome group were significantly higher than those of the good outcome group (all P<0.05). Multivariate logistic regression analysis showed that NLR was an independent predictor of poor outcomes at 30 d after the onset of spontaneous cerebral hemorrhage (odds ratio 1.135, 95% confidence interval 1.092-2.321; P=0.038). The ROC curve analysis showed that the best cut-off value of NLR was 6.679, and the sensitivity and specificity of predicting poor outcomes were 51.67% and 76.77% respectively; the best cut-off value of ICH score was 1.0, and the sensitivity and specificity of predicting poor outcomes were 69.71% and 89.80% respectively; the sensitivity and specificity of the combined application of NLR + ICH score to predict poor outcomes were 74.58% and 82.65% respectively. Conclusions:NLR was independently associated with poor outcomes at 30 d after the onset of spontaneous cerebral hemorrhage. Adding it to the ICH score could improve the accuracy of predicting poor outcome.

Objective To investigate the protective effect of Honokiol on the airway inflammation induced by particulate matter 2.5(PM2.5)in the asthmatic mice and its mechanism.Methods Fifty male specific pathogen free (SPF)Balb/c mice were randomly divided into 5 groups.Group A:normal control group;group B:asthmatic model group;group C:PM2.5 exposure asthmatic group;group D:TAK -242 group;group E:Honokiol group. Asthmatic mouse models were established by ovalbumin(OVA)sensitization and challenge.On days 0 and 7,the mice in B-E groups were injected intraperitoneally with injection 100 mg/L OVA and aluminum hydroxide for sensitization;on days 14 to 21,10 g/L OVA solution was given 30 min per day to challenge.During challenge phrase,the mice in C -E groups received intratracheal injection of PM2.5,every other day,4 times totally.On this basis,the mice in group D re-ceived TAK-242 intraperitoneal injection,and the mice in group E received honokiol intragastric administration.Group A was given saline instead of OVA.Animals were sacrificed 24 h after the final inhalation challenge,and the bronchoal-veolar lavage fluid(BALF)of the left lung was used for differential inflammatory cell counts.The expressions of Toll-like receptors 4(TLR4)and nuclear factor(NF)-κB at mRNA level were detected by real-time quantitative PCR. Flow cytometry analysis was performed to measure the levels of Th17 and Treg cells.Results Compared with group A,mice in group B and group C expressed more serious disorders of bronchial epithelial cells,alveolar wall congestion and edema,increased mucus secretion in the airway and infiltration of inflammatory cells in the lung,and those in group C were more obvious than those of group B and group E significantly reduced respiratory inflammation;compared with group A[(4.15 ± 1.35)×108/L,0.012 0 ± 0.002 3],the total number of inflammatory cell counts[(16.79 ± 5.62)×108/L and(24.58 ± 13.46)×108/L],eosinophils proportions(0.113 8 ± 0.022 3 and 0.197 8 ± 0.084 9)in group B and group C,were significantly higher,and the differences were statistically significant(all P<0.05);The total number of inflammatory cell counts and eosinophils proportion in group E(8.56 ± 3.28)×108/L and 0.041 5 ± 0.013 5)were significantly lower than those in group C,and the differences were statistically significant(all P <0.05);The expressions of TLR4 mRNA and NF-κB mRNA in group B and C(1.85 ± 0.56,1.82 ± 0.28 and 2.97 ± 0.41,2.83 ± 0.32)were significantly higher,and the differences were statistically significant(all P <0.05);The expressions of TLR4 mRNA and NF-κB mRNA in group E(1.60 ± 0.28,1.54 ± 0.25)was significantly lower than those in group C,and the differences were statistically significant(all P<0.05);the expressions of Th17 in group B and C[(2.89 ± 0.61)% and(4.96 ± 0.27)%]were significantly higher than those of group A[(1.03 ± 0.35)%] (all P<0.05);The expression of Th17 in group E[(1.83 ± 0.23)%]was significantly lower than that of group C,and the differences were statistically significant(P<0.05);the expressions of Treg in group B and C[(4.96 ± 0.35)%and(2.27 ± 0.41)%]were significantly lower than those of group A[(7.37 ± 0.56)%],and the differences were sta-tistically significant(all P<0.05);The expression of Treg in group E was significantly increased[(6.45 ± 0.38)%] compared with that in group C,and the difference were statistically significant(P<0.05);and those of group D and E were improved remarkably.Conclusions Honokiol can relieve PM2.5 exposure of asthmatic airway inflammation through down-regulating the expression of TLR4 and NF-κB and Th17 and regulating the balance of Th17 and Treg cells.

Objective To explore the effect of particulate matter (PM 2.5) on airway inflammation in asthmatic mice and the intervention effect of Honokiol.Methods Fifty female BALB/c mice were divided into 5 groups according random number table,group A:normal control group;group B:asthma model group;group C:PM 2.5 low dose exposure asthma group;group D:PM 2.5 high dose exposure asthma group:group E:Honokiol group.Asthmatic mouse models were established by ovalbumin(OVA) sensitization and challenge.On day 0 and 7,B-E groups were intraperitoneally with injection 100 mg/L OVA and Al (OH)3 for sensitization;on day 14 to 21,10 g/L OVA solution was given 30 min per day to challenge.During challenge phrase,C-D groups were received different doze intratracheal injection of PM 2.5 respectively,every 7 days,total 4 times.On this basis,the mice in group E received Honokiol intragastfic administration.The mice in group A were carried out by using saline instead of OVA.Mice were sacrificed 24 h after the final inhalation challenge,and for the recovered bronchoalveolarlavage fluid(BALF) of the left lung was used for differential inflammatory cell counts,HE staining and pathological examination were performed on the right lung.The expression of Toll-like receptor 4 (TLR4) and nuclear factor (NF)-κB at mRNA level were detected by real-time flurescence quantitative polymerase chain reaction (qPCR).Flow cytometry analysis was performed to measure the levels of Th17 and Treg cells.Results Compared with group A,mice in group B,group C and group D expressed more serious disorsers of bronchial epithelial cells,alveolar wall congestion and edema,increased mucus secretion in the airway and infiltration of inflammatory cells in lung,and those in group D was more obvious than those in group C and group E,significantly reduced respiratory inflammation compared with group E[(8.56 ± 3.28) × 108/L,0.041 5 ± 0.013 5],the total number of inflammatory cell counts in group C and group D were (20.28 ± 11.16) × 108/L and (27.38 ± 14.64) × 108/L,eosinophils proportion were 0.177 8 ±0.064 9 and 0.229 1 ±0.098 7,there were statistically significant differences(all P ＜ 0.05);compared with group E (1.60 ± 0.28,1.54 ± 0.25),the expression of TLR4 mRNA and NF-κB mRNA in group C and group D (2.56 ± 0.49,3.21 ± 0.61;2.42 ± 0.30,2.83 ± 0.32) were significantly higher,and there were statistically significant differences(all P ＜0.05),group D was more higher than those in group C (all P ＜ 0.05);compared with group E(0.018 3 ± 0.002 3),the expression of Th17 in group C and group D (0.043 9 ±0.008 9 and 0.052 2 ±0.011 8) were significantly higher,and there were statistically significant differences(all P ＜0.05);compared with group E(0.064 5 ±0.003 8),the expression of Treg in group C and group D (0.038 2 ± 0.004 2) and (0.022 7 ± 0.003 3) were significantly lower,and there were statistically significant differences(all P ＜ 0.05);and those of group E were improved remarkably.Conclusion PM 2.5 exposure can aggravate airway inflammation in asthmatic mice,and the damage to airway is more obvious when exposed to high dose of PM 2.5,Honokiol can relieve PM 2.5 exposure of asthmatic airway inflammation through down regulation the expression of TLR4 and NF-κB and Th17 and regulating the balance of Th17 and Treg cells.