369Fabrication of 3D gel-printed ß-tricalcium phosphate/titanium dioxide porous scaffolds for cancellous bone tissue engineering.

Human bone is composed of cortical bone and cancellous bone. The interior portion of natural bone is cancellous with a porosity of 50%-90%, but the outer layer is made of dense cortical bone, of which porosity was not higher than 10%. Porous ceramics were expected to be research hotspot in bone tissue engineering by virtue of their similarity to the mineral constituent and physiological structure of human bone. However, it is challenging to utilize conventional manufacturing methods to fabricate porous structures with precise shapes and pore sizes. Three-dimensional (3D) printing of ceramics is currently the latest research trend because it has many advantages in the fabrication of porous scaffolds, which can meet the requirements of cancellous bone strength, arbitrarily complex shapes, and individualized design. In this study, ß-tricalcium phosphate (ß-TCP)/titanium dioxide (TiO2) porous ceramics scaffolds were fabricated by 3D gel-printing sintering for the first time. The chemical constituent, microstructure, and mechanical properties of the 3D-printed scaffolds were characterized. After sintering, a uniform porous structure with appropriate porosity and pore sizes was observed. Besides, biological mineralization activity and biocompatibility were evaluated by in vitro cell assay. The results demonstrated that the incorporation of TiO2 (5 wt%) significantly improved the compressive strength of the scaffolds, with an increase of 283%. Additionally, the in vitro results showed that the ß-TCP/TiO2 scaffold had no toxicity. Meanwhile, the adhesion and proliferation of MC3T3-E1 cells on scaffolds were desirable, revealing that the ß-TCP/TiO2 scaffolds can be used as a promising candidate for repair scaffolding in orthopedics and traumatology.

Progranulin correlated with rapid progressive interstitial lung disease in dermatomyositis with anti-melanoma differentiation-associated gene 5 antibody.

OBJECTIVES: This study aimed to detect the expression of progranulin (PGRN) and elucidate associations with clinical features in dermatomyositis (DM) patients with anti-melanoma differentiation-associated gene 5 (anti-MDA5) antibody. METHODS: We enrolled 40 DM patients with anti-MDA5 antibody, 20 patients with antisynthetase syndrome (ASS; disease control), and 20 healthy individuals (healthy control, HC). The clinical features of patients with anti-MDA5 antibody and anti-histidyl-tRNA antibody were collected. The level of PGRN in the serum was tested by ELISA. RESULTS: The PGRN levels in DM patients with anti-MDA5 antibody (166.74 ± 97.95 ng/ml) were significantly higher than those in patients with ASS (82.66 ± 40.50 ng/ml; p < 0.001) and in HC (42.34 ± 18.69 ng/ml; p < 0.001). Patients with rapid progressive interstitial lung disease (RP-ILD) in DM with anti-MDA5 antibody (213.57 ± 114.05 ng/ml) had higher levels of PGRN than those without RP-ILD (135.51 ± 72.41 ng/ml; p = 0.012). ROC analysis showed an AUC value at 0.715 (95% CI, 0.541-0.888) for diagnosis of RP-ILD in DM patients with anti-MDA5 antibody. The expression of PGRN was positively correlated with the levels of ALT, AST, CK, LDH and ferritin (all p < 0.05). CONCLUSIONS: Our results indicated PGRN had great potential as a valuable serum marker of RP-ILD in DM with anti-MDA5 antibody. Key Points The level of PGRN was elevated in DM patients with anti-MDA5 antibody, especially for those with RP-ILD.

Effects of Compound Danshen Dripping Pills on Contrast-induced Nephropathy after Percutaneous Coronary Intervention and Patients ’Prognosis / 中国药房

OBJECTIVE：To observe the effects of Compound danshen drip ping pills on the prevention of contrast-induced nephropathy（CIN）after percutaneous coronary intervention （PCI）and its influence on clinical prognosis. METHODS ：From Jan. to Jun. 2020，240 patients with coronary heart disease receiving PCI in Tianjin Chest Hospital were randomly divided into control group（120 cases）and Danshen dripping pills group （120 cases）according to random number table. The patients in both groups were injected with Lippaclitanol injection 1-5 mL slowly through radial or femoral artery sheath ，and intravenous hydration was performed before and after PCI ；Danshen dripping pills group was additionally given Compound danshen dripping pills 270 mg orally for a long term ，three times a day ，three days before and after PCI ，on the basis of the control group. The levels of renal function indexes [serum creatinine （Scr），blood urea nitrogen （BUN），cystatin C （Cys-C），creatinine clearance rate （Ccr）]， inflammatory reaction indexes [high sensitivity C-reactive protein （hs-CRP）， interleukin-6 （IL-6）] and oxidative stress index [malondialdehyde （MDA）] were observed in 2 groups before and 72 hours after PCI. The occurrence of CIN in 2 groups was recorded 3 days after PCI therapy ；the occurrence of major cardiovascular adverse events was also observed during 1-year follow-up period. RESULTS ：Before treatment ，there was no significant difference in serum renal function indexes ，inflammatory reaction indexes and oxidative stress index between 2 groups（P＞0.05）. Seventy-two hours after PCI ，serum levels of Scr ，BUN， Cys-C，hs-CRP，IL-6 and MDA were increased significantly in 2 groups than before treatment ，while the Ccr were decreased significantly；those indexes of Danshen dripping pills group were significantly better than those of control group （P＜ 0.05）. The incidence of CIN in Danshen dripping pills group was 4.2％ after treatment ， and total incidence of major cardiovascular adverse events was 13.3％ during follow-up period，which were sign ificantly lower than 13.3％ and 27.5％ of control group （P＜0.05）. CONCLUSIONS ：Compound danshen dripping pills may have a certain effect on the prevention of CIN in coronary heart disease patients after PCI ，and can reduce the incidence of major cardiovascular adverse events.

Clinical analysis of cutaneous delayed-type hypersensitivity caused by injection of equine tetanus antitoxin or equine anti-tetanus immunoglobulin F (ab′) 2 / 中华皮肤科杂志

Objective:To analyze clinical characteristics of cutaneous delayed-type hypersensitivity caused by injection of equine tetanus antitoxin (TAT) or equine anti-tetanus immunoglobulin F (ab′) 2. Methods:Clinical data were collected from 181 outpatients or inpatients with cutaneous delayed-type hypersensitivity caused by injection of equine TAT or anti-tetanus immunoglobulin from 2008 to 2020, and retrospectively analyzed.Results:Before the injection of equine TAT or anti-tetanus immunoglobulin, skin test was negative in 171 (94.47%) of the 181 patients, and the 10 (5.53%) patients with positive skin test responses received desensitization injection. Among the 181 patients, there were 118 males and 63 females aged from 11 to 68 years, with the disease duration of 1 to 7 days and alatency period of 4 to 14 days. There was no significant difference in the clinical manifestations between the patients receiving injection of TAT (130 cases) and those receiving injection of equine anti-tetanus immunoglobulin (51 cases) . Urticaria-like rashes were the main clinical manifestation, and infiltrative erythema occurred at the injection site in 12 patients, of whom 10 developed generalized urticaria all over the body. Of the 181 patients, 163 (90.06%) presented with generalized skin rashes, and 56 (30.94%) had systemic symptoms such as chest tightness, fever, etc, of whom 15 (26.79%) had a history of allergies and 6 with severe symptoms had no history of allergies. Thirty-four (18.78%) patients had single or multiple laboratory abnormalities, such as increased white blood cell counts, elevated C-reactive protein level and urinary glucose, and presence of occult blood in urine. All cases responded well to the treatment with antihistamines and glucocorticoids. The treatment duration ranged from 3 to 10 days, and the outcome was good.Conclusion:TAT-or anti-tetanus immunoglobulin-induced cutaneous delayed-type hypersensitivity may still occur in patients with a negative skin test or after desensitization treatment, and mainly manifests as urticaria-like rashes.

Protocatechuic Aldehyde Represses Proliferation and Migration of Breast Cancer Cells through Targeting C-terminal Binding Protein 1 / 한국유방암학회지

PURPOSE: C-terminal binding protein 1 (CtBP1) is a transcriptional co-repressor that is overexpressed in many cancers. CtBP1 transcriptionally represses a broad array of tumor suppressors, which promotes cancer cell proliferation, migration, invasion, and resistance to apoptosis. Recent studies have demonstrated that CtBP1 is a potential target for cancer therapy. This study was designed to screen for compounds that potentially target CtBP1.METHODS: Using a structure-based virtual screening for CtBP1 inhibitors, we found protocatechuic aldehyde (PA), a natural compound found in the root of a traditional Chinese herb, Salvia miltiorrhiza, that directly binds to CtBP1. Microscale thermophoresis assay was performed to determine whether PA and CtBP1 directly bind to each other. Further, clustered regularly interspaced short palindromic repeats associated Cas9 nuclease-mediated CtBP1 knockout in breast cancer cells was used to validate the CtBP1 targeting specificity of PA.RESULTS: Functional studies showed that PA repressed the proliferation and migration of breast cancer cells. Furthermore, PA elevated the expression of the downstream targets of CtBP1, p21 and E-cadherin, and decreased CtBP1 binding affinity for the promoter regions of p21 and E-cadherin in breast cancer cells. However, PA did not affect the expression of p21 and E-cadherin in the CtBP1 knockout breast cancer cells. In addition, the CtBP1 knockout breast cancer cells showed resistance to PA-induced repression of proliferation and migration.CONCLUSION: Our findings demonstrated that PA directly bound to CtBP1 and inhibited the growth and migration of breast cancer cells through CtBP1 inhibition. Structural modifications of PA are further required to enhance its binding affinity and selectivity for CtBP1.

Pathological characteristics of skeletal muscle in anti-synthase syndrome patients / 中华风湿病学杂志

Objective:To investigate the pathological characteristics of skeletal muscle and its association with anti-aminoacyl-tRNA synthetases(ARS) antibodies and clinical features in patients with anti-synthetase syndrome (ASS).Methods:Patients diagnosed as ASS at China-Japan Friendship Hospital from 2008 to 2018 were involved in this study. Immunohistochemistry staining of MHC-Ⅰ, CD3, CD4, CD8 and CD20 molecule were performed in all muscle specimen taken from these patients. According to the muscular pathological characteristics, all patients could be divided into six pathological subgroups: pathologic DM(pDM), pathologic PM (pPM), unspecified myositis(USM), necrotizing myopathies (NAM), only MHC-Ⅰexpression (MHC-Ⅰ) and normal pathology groups. Immunoblotting assay was used to detect anti-ARS antibodies. Statistical analysis was performed using Statistical Product and Service Solutions (SPSS) software. T-test, Mann-Whitney U test and Analysis of Variance (ANOVA) were used for the comparison of measurement data. Chi-square test or Fisher's test were used for categorical data. P<0.05 was considered statistically significant. Results:A total of 77 patients underwent muscle biopsy and anti-ARS antibodies test, with the average age of (50±12) years and disease course of 9(3-24) months. The prevalence of anti-Jo-1, anti-PL-7, anti-PL-12, anti-EJ and anti-OJ antibodies in these patients was 47%(36 cases), 29%(22 cases), 12%(9 cases), 13%(10 cases) and 0 respectively. Among all the ASS patients, the most common pathological type was USM(37/77, 48%), followed by pDM(14/77, 18%), the normal pathology(13/77, 17%), NAM(10/77, 13%) and MHC-Ⅰ (3/77, 4%) groups. There were no pPM subtypes in all groups. The frequency of pDM types was significantly different among the anti-ARS antibodies groups( χ2=9.075, P=0.028). The anti-EJ-positive patients had a higher frequency of pDM compared with anti-PL-7-group(40% vs 4%, χ2=6.555, P=0.024). Meanwhile, the CD20 expression in muscle tissue was observed in 30% of anti-EJ-positive patients and 4% of anti-Jo-1-positive ones. There was statistically significant difference in the positive rate of CD20 expression among anti-ARS antibodies groups ( χ2=12.837, P<0.01). Conclusion:The muscle pathological characteristics of ASS are polymorphic and relate to the anti-ARS antibodies. Performing muscle biopsy and distinguishing pathological types are helpful for the diagnosis and stratification of ASS.

The role of muscle biopsy score in assessing disease activity in adult patients with idiopathic inflammatory myopathies / 中华风湿病学杂志

Objective To investigate the role of muscle biopsy score in the assessment of the disease activity of idiopathic inflammatory myopathy (IIM) in Chinese adult patients.Methods Total 423 adult IIM patients charged in thedepartment of rheumatology of China-Japan Friendship Hospital from December 2008 to June 2017 were included in this study.The score of disease activity was assessed using International Myositis Assessment and Clinical Studies Group (IMACS) Core Set Measures of IIM.Muscle tissue specimens of IIM patients wasimmunohistochemically stained formajorhistocompatibilitycomplex (MHC)-Ⅰ,CD3 and CD20 molecules.The muscle biopsy score of each specimens was measured separately by four parts of muscle tissue according to muscle fiber,inflammation infiltrating,blood vessel and connective tissue.The correlation between disease activity and muscle biopsy score of IIM was analysed.Statistical analyses were performed using Statistical Product and Service Solutions (SPSS) software.Nonparametric Mann-Wittney U test,Wilcoxon rank sum test and Fisher's exact test were used for between-group comparisons.Nonparametric Spearman's rank correlation was used for correlation analysis.P＜0.05 was considered statistically significant differences.Results The degree of muscle biopsy score was associated with the overall disease activity (r=0.228,P＜0.05),muscle visual analog scale (VAS) (r=0.407,P＜0.05) and the serum levels of creatine kinase (CK) (r=0.466,P＜0.05) of IIM patients,respectively.Among 127 initial patients including 92 dermatoimyositis (DM) and 35polymyositis (PM),the muscle VAS of DM patients were positivelycorrelated to thetotal muscle biopsy score,the score of muscle fiber and inflammation infiltrating (r=0.30,0.312 and 0.241,P＜0.05),respectively.While,the high disease activity of PM patients was related to the increased muscle fiber score (r=0.478,P＜0.05).Conclusion Measurement of muscle biopsy score can be used as an effective tool to evaluate the disease activity of IIM.

The prevalence of snoring and its related family factors of children from 3 to 14 years old in Beijing / 中华耳鼻咽喉头颈外科杂志

Objective@#To investigate the snoring status and related family factors of children from 3 to 14 years old in Beijing.@*Methods@#From May to July, 2015, data of children from 3 to 14 years old were obtained from a status survey from 7 districts(Xicheng, Chaoyang, Changping, Shunyi, Fangshan, Huairou and Mentougou) in Beijing. A total of 11 420 children from 25 primary and middle schools were randomly selected. Pediatric Sleep Questionnaire (PSQ) and a self-administered questionnaire were carried out for the adopted children. Self-administered questionnaire included the snoring related family factors. Logistic regression was used to estimate the odd ratio(OR) with 95% confidence intervals for variables.@*Results@#A total of 9 198 children meet the inclusion criteria and are analyzed in the study, of whom 901 (9.80%) were found with snoring behavior. The incidence of boys is higher than girls. Obese children take higher risk of snoring. Compared with younger children (≤6 years old), older children (≥12 years old) have a significantly lower risk of snoring (OR=0.464, 95%CI 0.368-0.585). There is no statistical association between full-term infants, infant feeding pattern, parental cigarette smoking and child snoring.The children with family history of snoring have a significantly higher risk of snoring occurrence. The educational background of mother is statistically related to children snoring (OR=1.241, 95%CI 1.058-1.457).@*Conclusions@#The incidence of children snoring in Beijing is 9.80%, male gender, obesity, and young age are all risk factors for children snoring. There is a significantly statistical relationship between snoring and related family factors, such as family snoring history and education experience.

Analysis of sleep quality and related factors among children in Beijing / 中华耳鼻咽喉头颈外科杂志

Objective@#To investigate the sleep quality of children in Beijing and to analyze the related factors.@*Methods@#The data were collected from the survey of 3-14 years old children in 7 urban districts of Beijing in 2015. By using multi-stage stratified cluster random sampling method, 26 kindergartens and primary and secondary schools in 7 districts and counties, including Xicheng, Chaoyang, Changping, Shunyi, Fangshan, Huairou and Mentougou, were randomly selected, with a total of 11 420 children. Children′s sleep status was investigated with Children′s Sleep Questionnaire (PSQ), and the proportion of children with sleep quality problems when the PSQ score was greater than 7. Various sleep related factors were investigated with self-made questionnaire. A multilevel model was used to analyze the relationship between PSQ score and related factors.@*Results@#The average PSQ score of the children was 3.60±2.69. The proportion of children with sleep quality problems was 8.87%(816/9 198). Multilevel model analysis showed that the younger the children, the higher the PSQ score (<6 years old vs. 6~12 years old vs. >12 years old: 3.94±2.58 vs. 3.58±2.66 vs. 3.30±2.84, F=33.015, P<0.001); male PSQ score higher than female (3.89±2.75 vs. 3.30±2.60, t=10.560, P<0.001); and snoring, obesity, father/mother snoring, playing games before bed, surfing the internet, eating and other factors were statistically related to PSQ.@*Conclusions@#Sleep quality of children in Beijing should not be neglected, especially preschool children with high PSQ scores. Parents should pay attention to children′s snoring problems and try to reduce some pre-sleep behaviors that may affect sleep quality.

The prevalence of snoring and its association with academic performance among school-aged children in Beijing / 中华预防医学杂志

Objective@#To investigate the snoring status of school-aged children in Beijing and explore the association of snoring and academic performance.@*Methods@#A total of 7 925 children aged from 6 to 14 were selected from 15 primary and middle schools at 7 districts (Xicheng, Chaoyang, Changping, Shunyi, Fangshan, Huairou and Mentougou) in Beijing in 2015, using multi-stage stratified cluster random sampling method. The recruited children were asked to complete the Pediatric Sleep Questionnaire (PSQ) and a questionnaire related to sleep behavior. The multiplelogistic regression was used to analyze the association of snoring and academic performance.@*Results@#A total of 794 (12.44%) children showed a decline in academic performance among 6 383 eligible respondentsfor data analysis. 580 (9.08%) children with snoring was identified, of which 333 and 247 were in frequency of 1-2 times per week and frequency of ≥3 times per week, respectively; 357, 170 and 53 were in snoring grade Ⅰ, grade Ⅱ and grade Ⅲ, respectively. Compared with the children without snoring, the OR (95%CI) for children with 1-2 times per week and ≥3 times per week was 1.363 (1.000-1.857) and 1.605 (1.135-2.269), respectively; and the OR (95%CI) for children with grade Ⅰ, grade Ⅱ and grade Ⅲ of snoring was 1.226 (0.893-1.683), 1.595 (1.062-2.397) and 2.31 (1.17-4.565), respectively.@*Conclusion@#There is a statistical relationship between snoring and the decline of academic performance. The decline of academic performance positively associated with increased frequency and grade of snoring.

Role of CHOP-dependent endoplasmic reticulum stress signaling pathway in triptolide-induced apoptosis of A375 melanoma cells and its mechanisms / 中华皮肤科杂志

Objective To investigate the role of C/EBP homologous protein (CHOP)-dependent endoplasmic reticulum stress signaling pathway in triptolide-induced apoptosis of A375 melanoma cells,and to explore its mechanisms.Methods In vitro cultured human A375 melanoma cells were divided into several groups:experimental groups treated with triptolide at different concentrations of 12.5,25,50,100 and 200 nmol/L,and negative control group receiving no treatment.After 24-hour treatment,changes in the morphology of A375 cells were observed under a light microscope.After 24-,48-and 72-hour treatment,cell counting kit 8 (CCK8) assay was performed to evaluate the inhibitory effect of triptolide on cell proliferation.Flow cytometry was conducted to detect the apoptosis of A375 cells after annexin V-fluorescein isocyanate/propidium iodide double-staining,and transmission electron microscopy to observe the changes in the morphology of the endoplasmic reticulum.Western blot analysis was performed to determine the protein expression of glucose-regulated protein GRP78,protein kinase R-like endoplasmic reticulum kinase (PERK),phosphorylated PERK (p-PERK) and CHOP after 24-hour treatment,as well as to observe the changes in protein expression of GRP78 after treatment over time.Real-time fluorescencebased quantitative PCR (qPCR) was conducted to measure the mRNA expression of GRP78,PERK and CHOP.Results After the treatment with triptolide,A375 cells became long and thin,appeared fusiform with less cytoplasm,and varied in size.Their shape was irregular,and there were many protuberances on the cell surface.CCK8 assay showed that triptolide at different concentrations had inhibitory effects on the proliferation of A375 cells after 24-,48-and 72-hour treatment,and the inhibitory effects varied with the concentrations of triptolide and the duration of treatment (all P ＜ 0.05).The 50％ inhibitory concentration (IC50) of triptolide at 24,48 and 72 hours were 308,83 and 55 nmol/L respectively.The apoptosis rate of A375 cells was significantly higher in the 12.5-,25-,50-,100-and 200-nmol/L triptolide groups (10.3％ ± 0.1％,14.6％ ± 0.8％,17.4％ ± 0.7％,21.1％ ± 1.0％ and 29.5％ ± 1.1％,respectively) than in the negative control group (3.3％ ± 0.4％,all P ＜ 0.05).After 24-hour treatment with 200 nmol/L triptolide,damaged endoplasmic reticula were observed by using transmission electron microscopy.After 24-hour treatment with triptolide at different concentrations,the protein expression of GRP78,p-PERK,PERK and CHOP all gradually increased with the increase of triptolide concentrations (P ＜ 0.05).However,after 24-,48-and 72-hour treatment,the protein expression of GRP78 gradually decreased over time (P ＜ 0.05).qPCR showed that the mRNA expression of GRP78,PERK and CHOP gradually increased with the increase of triptolide concentrations after 24-hour treatment.Compared with the negative control group,all the experimental groups showed significantly higher mRNA expression of GRP78,PERK and CHOP (P ＜0.05) except the 12.5-nmol/L triptolide group with similar mRNA expression of PERK.Conclusion Triptolide can induce endoplasmic reticulum stress,and the apoptosis of A431 cells was induced by CHOP-dependent endo-plasmic reticulum stress along with the increase of triptolide concentrations and treatment duration.

Clinical value of dual-energy CT Volume software in quantitative analysis of urate crystals / 实用放射学杂志

Objective To assess the clinical value of dual-energy CT (DECT) Volume software in quantitative analysis of urate crystals.Methods The DECT data of 60 gout patients based on the American College of Rheumatology diagnostic criteria were analyzed retrospectively.The volumes of urate crystals were quantitatively analyzed by using Volume software with two senior radiologists.The results were statistically analyzed.Results Seventy-two joints of 60 gout patients were scanned by DECT.40 of 43 joints had urate crystals in foot and ankle with the average volume of (0.621±0.742) cm3;18 of 19 joints had urate crystals in knee with the average volume of (0.842±1.086) cm3;10 of 10 joints had urate crystals in hand and wrist with the average volume of (0.796±0.583) cm3.There was no statistical difference for volume measurement between two doctors (P>0.05).The volumes of urate crystals in 4 patients with regular medication were reduced.Conclusion Volume software of DECT can quantitatively analyze urate crystals with a good repeatability, which has high application value in clinical diagnosis and treatment monitoring of gout.

Differentially expressed genes identified in the muscle of patients with polymyositis by microarray analysis / 中华风湿病学杂志

Objective To profile the differentially expressed genes in the muscle of polymyositis (PM) patients.Methods A mRNA microarray analysis was performed to profile mRNAs from 5 treatment-naive PM patients and 5 healthy controls.Gene Ontology and KEGG pathway analyses were applied to delineate the functional roles of the differentially expressed mRNAs.Quantitative real-time PCR analysis was conducted to validate the microarray data.The Student's t-test was used to analyze the statistical significance of the microarray results,and Benjamini-Hochberg FDR was used for multiple-test correction.Results Microarray analysis revealed that a total of 1 905 mRNAs (787 up-regulated and 1 118 down-regulated) were significantly differentially expressed in PM patients compared with the healthy controls (fold change＞2,P＜0.05).Six mRNAs were selected to analyze by quantitative RT-PCR to validate their expression levels and the results were consistent with that of the microarray analysis,and thus provide reliable validation for the microarray results.Gene ontology and KEGG pathway analysis for the differentially expressed mRNAs revealed that these genes were mainly involved in the biological process of infection and cytotoxic effect.In addition,there were some common signaling pathways that shared by PM and other autoimmune diseases.Conclusion There are differences in gene expressions between PM patients and healthy controls.The muscle damage in PM patients may be due to multi gene involvement and multi gene regulation.

Characteristics of sleep apnea events in non-snoring children / 中华耳鼻咽喉头颈外科杂志

Objective@#To investigate the characteristics of sleep-related respiratory events in normal children and to provide normal polysomnographic parameters for diagnosing sleep-disordered breathing in children.@*Methods@#Normal subjects between 3 and 14 years old were enrolled from 1 July 2014 to 31 December 2015 and the subjects received overnight polysomnography at the sleep center of our hospital. They were children of our hospital employees or were recruited from the communities who did not have sleep and respiratory disorders. The children were divided into preschool group (3-5 years) and school-age group (6-14 years). Apnea index (AI), obstructive apnea index (OAI), central apnea index (CAI), and mixed apnea index (MAI) were compared between the two groups. Data for continuous variables that showed normal distribution were expressed as ±s. M(P25, P75) were used when data were not normally distributed. Continuous variables that showed normal distribution were compared by using an independent-sample t-test. Wilcoxon-test was performed when data exhibited non-normal distribution. Differences in categorical data were tested with Chi-square test. Pearson correlation test was applied for the correlation analysis. P<0.05 was considered statistically significant.@*Results@#A total of 115 normal children took part in the study including 40 in preschool group and 75 in school-age group. Children in both groups had a few sleep apnea events, most of which were central apneas, accounting for 80% and 70% of the total respiratory events respectively. Central apnea index in preschool children were significantly higher than that of school-age children (P<0.001), with median of 0.6 times/h and 0.1 times/h, respectively. Median OAI of both groups were 0.0 times/h without significant difference (P=0.748). Obstructive apnea events occurred mainly in the supine position in both groups.@*Conclusions@#Normal children may have a few apnea events in sleep that were predominantly central apnea. CAI of preschool children is significantly higher than that of school-age children. Obstructive sleep apnea is rare in normal children, and sleep apnea occurs mainly in the supine position.

Application of micro movement sensitive mattress sleep monitoring system in diagnosis of children with obstructive sleep apnea syndrome / 中华实用儿科临床杂志

Objective To evaluate the application value of the micro movement sensitive mattress sleep monitoring system(MSMSMS) in the diagnosis of children with obstructive sleep apnea syndrome (OSAS).Methods One hundred and twenty-nine children aged from 3 to 14 years who visited the sleep center of Beijing Children's Hospital Affiliated to Capital Medical University from June 2013 to June 2015 due to sleep snoring were enrolled.Children with acute respiratory infection,cranial facial abnormalities,chronic lung diseases and neuromuscular diseases were excluded.According to the criteria,36 children were diagnosed as OSAS with average age of (7.3 ± 2.5) years,including 28 males and 8 females.Ninety-three non-OSAS children were recruited with average age of (6.3 ± 2.3) years,including 61 males and 32 females.Subjects were monitored with polysomnography(PSG) and MSMSMS simultaneously.Apnea/hypopnea index (AHI) ＞ 5 or obstructive apnea index (OAI) ＞ 1 were used to define whether OSAS existed.The consistency between MSMSMS and PSG in the diagnosis of OSAS and the determination of sleep efficiency were compared.Results The Kappa consistency coefficient of MSMSMS and PSG in the diagnosis of OSAS was 0.70(95％ CI:0.57-0.84),Z =7.99,P ＜ 0.000 1,which indicated the consistency between PSG and MSMSMS was good.The consistency of sleep efficiency of MSMSMS and PSG were compared.Bland-Altman results showed that there were 3％ (5/129 cases)points out of 95％ consistency bound and the interclass correlation coefficient (ICC) was 0.69 which indicated the consistency of 2 methods was good in determination of sleep efficiency.MSMSMS was able to detect respiratory event that was associated with sub-cortical arousals with no electroencephalogram arousal or blood oxygen reduction.Conclusions There is an adequate consistency between MSMSMS and PSG in the diagnosis of children with OSAS and determination of sleep efficiency.The MSMSMS has an advantage in detection of sub-cortical arousals and respiratory event.

Bone marrow mesenchymal stem cells transplantation in the treatment of diabetic cystopathy / 中国组织工程研究

BACKGROUND:Stem cel transplantation has gained considerable support recently. It provides new opportunities for treating diabetic neurogenic bladder. OBJECTIVE:To summarize the research progress in bone marrow mesenchymal stem cel s (BMSCs)transplantation in the treatment of diabetic neurogenic bladder. METHODS:The first author retrieved Sciencedirect, PubMed, Embase, Wangfang and CNKI databases, for relevant articles of BMSCs transplantation in the treatment of diabetic neurogenic bladder, published from 2000 to 2016. The key words were“bone marrow mesenchymal stem cel s, diabetic neurogenic bladder, differentiation, transplantation”in Chinese and English, respectively. RESULTS AND CONCLUSION:In patients with diabetic neurogenic bladder, the transplantation of BMSCs may provide safer and longer-lasting outcomes by repairing the damaged bladder and urethra. And it can produce various bioactive substances, which wil have nutritional paracrine effects on the bladder microenvironment, including anti-inflammation, promoting cel proliferation and improving cel survival. On the one hand, the BMSCs have the ability to migrate to the injury site via the blood circulation. On the other hand, BMSCs can produce various growth factors, as wel as the cytokines that can inhibit the inflammatory response. While the current clinical studies are lacking, its efficacy and safety needs further verification.

The safety and efficacy of golimumab in treatment of 25 patients with active ankylosingspondylitis / 中华内科杂志

Objective To evaluate the efficacy and safety of golimumab in patients with active ankylosing spondylitis (AS).Methods This was a randomized, double-blind, placebo-controlled trial. The subjects were randomized to receive either golimumab 50mg subcutaneously or placebo every 4 weeks. Patients in both groups received golimumab 50mg from week 24 to week 48. The primary endpoint was the proportion of at least 20% improvement in the Assessment of Spondyloarthritis International Society (ASAS20) at week 14. The secondary endpoints included at least 40% improvement in the Assessment of Spondyloarthritis International Society (ASAS40), ASAS partial-remission, Bath AS functional index, Bath AS disease activity index, Bath AS metrology index, enthesitis index and Jenkins sleep evaluation questionnaire. Results A total of 25 subjects were included in this study, 13 with golimumab and 12 with placebo. At Week 14, 6(46.2%) subjects achieved ASAS20 in golimumab group and 2(16.7%) in placebo group. Significant improvements of other efficacy endpoints were also found in golimumab group. Golimumab was safe and well to lerated. Most of the adverse events were slightly impaired liver function, where as elevated aspartate aminotransferase and/or alanine aminotransferase returned to normal without drug with drawal.Conclusion Golimumab improves AS activity, clinical symptoms and sleep disturbance in patients with active AS with good safety and tolerability.

Meta analysis of adenoid bacterial distribution in children with adenoid hypertrophy / 中国耳鼻咽喉头颈外科

OBJECTIVE To illuminate the adenoid bacteria distribution in children with adenoid hypertrophy. METHODS PubMed, Embash, Medline, CNKI, VIP Information and Wanfang data were searched for studies on the adenoid bacteria distribution and adenoid hypertrophy. Random effects meta-analysis was used to pool data. RESULTS Nine studies were included in this meta analysis. The pooled detection rates of haemophilus influenza, staphylococcus aureus and streptococcus pneumonia were 0.21 (95%CI, 0.09-0.32), 0.14 (95%CI, 0.09-0.20) and 0.15 (95%CI , 0.08-0.22) respectively. CONCLUSION Haemophilus influenzae, staphylococcus aureus, and streptococcus pneumoniae are three main kinds of pathogenic bacteria of adenoid hypertrophy in children.

Primary stability of mini-screw：buccal cortical thickness in maxillary posterior area of malocclusion / 中国组织工程研究

BACKGROUND:Mini-screw stability is primarily related to alveolar bone cortical thickness. It is necessary to learn cortical thickness to choose suitable implanting sites and predict success rate. OBJECTIVE:To evaluate the buccal cortical thickness in maxilary posterior area of Class II Division I malocclusion adolescents. METHODS: Fifty-two adolescents (including 26 male and 26 female) of Class II Division I malocclusion scanned by Cone Beam Computer Tomography were involved in this study. The buccal cortical thickness of six posterior interradicular sites (14-15, 15-16, 16-17, 24-25, 25-26, 26-27) at four bone levels (2, 4, 6, 8 mm) from the alveolar crest in both boys and girls were measured. RESULTS AND CONCLUSION: (1) There was no statisticaly significant difference in alveolar cortical thickness between left and right sides in the girls (P > 0.05); cortical thickness of 5-6 and 6-7 at 8 mm was thicker than that at 2 mm (P 0.05). Al sites in this study were suitable for mini-screw implantation; from the first molar to posterior dental arch, buccal cortical thickness is wel-distributed; it is dangerous for implantation in the areas around the first molar more than 6 mm, where the frequent presence of the maxilary sinus is observed. There is an increase of buccal cortical thickness from crest to base of alveolar crest, obtaining good initial stability.

Application of non-invasive ventilation in children with airway obstructive diseases / 中华实用儿科临床杂志

Objective To investigate the application of non-invasive ventilation in children with airway obstructive diseases,especially those who had obstructive sleep apnea syndrome(OSAS).Methods A case follow-up study was conducted between October 2005 and October 2013 in children who had airway obstruction that led to OSAS or chronic respiratory failure and had been given non-invasive ventilation therapy.Children received non-invasive ventilation support,and pressure titration was performed manually in the sleep center while the mode was chosen according to their disease condition.Pulse rate,oxygen saturation or polysomnography were monitored during the treatment.Some patients went on receiving ventilation support when discharged home depending on their disease status.Patients were followed up every 3,6,or 12 months.Results Thirty-seven patients received non-invasive ventilation treatment till October 2013.Thirty-two cases were boys,and 5 cases were girls.The age ranged from 1 year old and 2 months to 12 years old and 6 months.The underlying diseases included OSAS with adenotonsillar hypertrophy,OSAS with mucopolysaccharidosis,mental retardation,cerebral palsy,morbid obesity,and bronchiolitis obliterans.All the OSAS patients had their snoring and apneas relieved,and respiratory distress and daytime symptoms were improved.Regarding the sleep study parameter,the apnea hypopnea index (P ＜ 0.001),obstructive apnea index (P =0.001),oxygen desaturation index(P =0.001),minimum oxygen saturation (P ＜ 0.001) were improved.Till the end of the study,18children (49％)were still receiving non-invasive ventilation,9 children (24％)stopped ventilation after discharge home,4 children (11％)ceased treatment as their symptoms disappeared and polysomnography data was normal,4 children (11％) lost follow-up 3 months after treatment,and 2 children (5％) died of underlying disease.Conclusions Some children with airway obstruction need non-invasive ventilation support.Non-invasive ventilation therapy can be successfully performed in pediatric population.