Objective: To explore the relationship between air pollutants and pediatric outpatient volumes in Baoshan District, Shanghai Municipality. Methods: Data of meteorological factors, air pollutants and pediatric outpatient volumes in four general hospitals were collected in Baoshan District from 2015 to 2019, and a generalized additive model was used to fit the Poisson-like distribution. The exposure-response relationship between fine particulate matter (PM2.5), sulfur dioxide (SO2), nitrogen dioxide (NO2), ozone (O3) and total pediatric outpatient volumes and pediatric respiratory outpatients. Results: The median of the average daily temperature and relative humidity were 18.7 (interquartile range, 14.4) ℃ and 74.5% (interquartile range, 18.0%) in Baoshan District from 2015 to 2019, respectively. The median of the average daily concentrations of PM2.5, SO2, NO2 and O3 were 35.0 (interquartile range, 35.0), 11.0 (interquartile range, 7.0), 45.0 (interquartile range, 31.8) and 84.5 (interquartile range, 50.0) μg/m3, respectively. The median of the average daily total and respiratory pediatric outpatient volumes were 680 (interquartile range, 246) and 392 (interquartile range, 253). Spearman rank correlation analysis showed that temperature, relative humidity, PM2.5, SO2, NO2 and O3 were associated with total and respiratory pediatric outpatient volume (all P<0.05). Under the single pollutant model, the excess risk of total and respiratory pediatric outpatient volume due to PM2.5 (ER=0.318, 0.257), SO2 (ER=1.610, 2.546), and NO2 (ER=0.808, 0.839) reached the maximum effect on the same day, and the effect of O3 (ER=0.102, 0.222) reached its maximum at the first day of lag. Under the multi-pollutant model, after O3, SO2, NO2 and PM2.5 were introduced, a exposure-response relationship between air pollutants and total pediatric outpatient volumes was the largest on the sixth day after the lag (ER=0.419). There was no exposure-response relationship between air pollutants and respiratory pediatric outpatient volumes. Conclusion PM2.5, SO2, NO2 and O3 are associated with total and respiratory pediatric outpatient volumes, and the lag effects due to different air pollutants are different.

ObjectiveTo compare the incidence of respiratory and allergic diseases in children in Xuhui District， Shanghai in 2013 and 2020， and to determine the influencing factors. MethodsAnnual average levels of air pollutants including PM_2.5， PM₁₀， O₃， SO₂， and NO₂ were collected and described in Shanghai from 2013 to 2020. A cross-sectional survey was conducted by using a questionnaire among grade 3 to 5 students in a school in Xuhui District， Shanghai， in September 2013 and 2020， respectively. The questionnaire collected variables including living environment， daily habits， family history of respiratory and allergic diseases， and incidence of these diseases in children. Chi-square test was used to determine the difference across respiratory and allergic diseases. Logistic regression was conducted to determine the influencing factors. ResultsA total of 1 398 valid questionnaires were collected （705 in 2013 and 693 in 2020）. Compared with 2013， annual average concentrations of PM_2.5， PM₁₀， O₃， SO₂， and NO₂ in 2020 significantly decreased. The prevalence of bronchial asthma， bronchitis， persistent cough and persistent expectoration in 2013 were significantly higher than those in 2020 （P<0.05） in Xuhui District. Multivariate analysis showed that severe air pollution， boys， parents with asthma or allergy， parents with higher educational levels， and more allergens in household were the risk factors associated with the incidence of bronchial asthma， bronchitis， allergic rhinitis and atopic eczema （P<0.05）. Parents with allergy history， high smoking frequency of family member， and more allergens in household were the risk factors associated with the incidence of persistent cough and persistent expectoration （P<0.05）. ConclusionTo 2013，2020 air pollution in Shanghai has been mitigated and prevalence of bronchial asthma and bronchitis of children has decreased. Childhood respiratory and allergic diseases are associated with indoor and outdoor environment， family medical history， and family daily habits.

ObjectiveTo explore the association between air pollutants and hospital outpatient visits in a district of Shanghai. MethodsDaily meteorological data， environmental data， data of outpatient visits to two secondary hospitals and two tertiary hospitals in this district from January 1， 2015 to December 31， 2019 were collected. A Poisson regression generalized linear model was used to analyze the exposure-response relationship between the air pollutants and hospital outpatient visits in this area. ResultsDuring the study period， the total number of outpatient visits in the included hospitals was 17 802 634， with an average daily total of （9 750±4 191） outpatient visits，and an average daily of （761±341） respiratory outpatient visits. In the lag effect of single pollutant model， when the concentration of air pollutant increased by 10 μg·m^-3， PM_2.5， SO₂， NO₂ had the maximum lag effect on the number of outpatient visits in the department of internal medicine for respiratory diseases on lag day 4， day 5 and day 7， respectively. And the RR values and 95%CI were 1.002 0（1.001 3‒1.002 6）， 1.0154（1.012 3‒1.018 5）， and 1.006 1（1.005 3‒1.006 9）， respectively. ConclusionThere is a exposure-response relationship between air pollutants and the number of outpatient visits in each department of the hospitals， and different pollutants have different degrees of lag effects.

Background Air quality health index (AQHI) has been widely used to quantify the health effects of multiple pollutants observed in population-based epidemiological studies, and can better reflect the widespread linear non-threshold between air pollution and health effects. Objective To explore an AQHI for pediatric respiratory diseases (AQHI_r) in Shanghai and evaluate its feasibility. Methods The daily numbers of hospital outpatient visits for pediatric respiratory diseases from 2015 to 2019 were obtained from five general hospitals in Xuhui, Baoshan, Hongkou, Jinshan, and Chongming Districts of Shanghai. Monitoring data on air pollutants (PM_2.5, PM₁₀, SO₂, NO₂, and O₃), air quality index (AQI), and meteorological variables (temperature, relative humidity, air pressure, and wind speed) were collected from five air quality monitoring sites nearest to selected hospitals. Time-series analysis using generalized additive model (GAM) was conducted to estimate the associations between respiratory-related pediatric outpatient visits and the concentrations of air pollutants. The sum of excess risk (ER) of hospital outpatient visits was used to construct AQHI_r. To assess the predictive power of AQHI_r, the associations of AQHI_r and AQI with the number of pediatric respiratory outpatient visits in three hospitals in Xuhui, Hongkou, and Chongming districts were compared. Results Air pollutants had various effects on respiratory diseases outpatient visits. PM_2.5, NO₂, and O₃ had most significant impacts on lag0 day and the associated ERs of hospital outpatient visits for each 10 μg·m⁻³ increase in pollutant concentration were 1.27% (95%CI: 0.88%-1.66%), 0.75% (95%CI: 0.40%-1.11%), and 0.36% (95%CI: 0.10%-0.62%), respectively. PM₁₀ and SO₂ had most significant impacts on lag3 day and the associated ERs of hospital outpatient visits for each 10 μg·m⁻³ increase in pollutant concentration were 0.81% (95%CI: 0.51%-1.12%) and 5.64% (95%CI: 3.37%-7.96%), respectively. There were significant effects of combinations of two pollutants among PM_2.5, PM₁₀, NO₂, SO₂, and O₃ except for PM₁₀+NO₂, SO₂+PM_2.5, and SO₂+NO₂ (P<0.05). According to the results of single-pollutant and two-pollutant models, PM_2.5, NO₂, SO₂, and O₃ were selected to construct AQHI_r. The comparison showed that for every interquartile range increase in AQHI_r, the ER for pediatric outpatient visits was higher than that for the value corresponding to AQI. Conclusion Air pollutants in Shanghai have an impact on the number of pediatric respiratory outpatient visits. The AQHI_r based on and outpatient visits for pediatric respiratory diseases can be a sensitive index to predict the effects of air pollution on children's respiratory health.

Objective To investigate the expression level and clinical significance of melanoma antigen gene A (MAGEA) in osteosarcoma patients. Methods Compare gene expression profiles in osteosarcoma cell lines and osteoblasts with gene microarrays. Validation of differentially expressed genes was carried out by real-time polymerase chain reaction analysis. Corresponding protein levels were measures by Western blot analysis in osteosarcoma cell lines and by immunohistochemistry in osteosarcoma tissues. The staining intensity of immuno-histochemistry was correlated with clinical outcome , and its prognostic significance was analyzed. Results Sev-eral genes belonging to MAGEA increased significantly in all osteosarcoma cell lines and tumor tissue , but not in normal osteoblast cell. Patients with MAGEA expression has higher risk of lung metastasis (relative risk 2.79, 95% confidence interval, 1.12-6.93; P = 0.028) and lower five-year survival rates (39.6% ± 8.4% vs. 80% ± 8.9%, P = 0.01) compared with patients without MAGEA expression. Conclusions The expression of MAGEA increased in osteosarcoma , which inversely correlating with outcome of osteosarcoma patients.

Objective To study the growth inhibition,apoptosis induction effects of cinobufagin(CB)on human osteosarcoma(OS) cell line U2OS,MG63 and SaO2 in vitro and the underlying mechanism of action of cinobufagin in OS cells.Methods Cell viability was assessed by MTT assay.Cell-cycle status,apoptosis-inducing effects were evaluated by flow cytometry,fluorescent staining and DNA fragmentation assays.Inhibitors of apoptosis proteins (IAPs) and Bcl-2 family proteins including Bax,cleaved-PARP,xIAP,cIAP-1,survivin and p65 were tested by Western blot.Results MTT assay showed that CB could inhibited the growth of U2OS,MG63 and SaO2 cells in a dose-and time-dependent manner.The 48 h IC50 of CB on U2OS,MG63 and SaO2 cells were (104.83± 16.96) nmol/L,(47.07±7.5) nmol/L,and (136.72±10.08) nmol/L respectively.The induction of G2/M cell-cycle arrest was seen in the cells treated with CB.After cells were cultured for 12 h in the presence of 100 nmol/L CB,the percentages of cells in the G0/G1 phase were decreased,while G2/M phase were increased in U2OS,MG63 and SaOS2 cells,respectively.The results showed CB inhibited the proliferation of osteosarcoma cells through blocking the cell cycle in G2/M phase.Induction of apoptosis was confirmed by Hoechst 33258 and Annexin V/PI staining.After treating with 100 nmol/L CB for 48 h,the extents of apoptosis were 33.6％±6.4％,36.4％±7.8％ and 29.3％±5.1％,respectively.These results indicate that the anti-tumor activity of cinobufagin in osteosarcoma cells was due to a G2/M cell cycle arrest and apoptosis inducing effect.Western blot showed that CB could induce the apoptosis related family proteins Bax,cleaved-PARP up-regulation,xIAP,cIAP-1,survivin and p65 downregulation in OS cells.Conclusion CB can inhibit the cell viability and induce G2/M cell cycle arrest and apoptosis in U2OS,MG63 and SaO2 cells.The apoptosis-inducing effect of CB is confirmed by the regulation of apoptosis related proteins IAPs and Bcl-2 in vitro.

OBJECTIVETo detect the expression of SCUBE3 in human osteosarcoma cell lines and surgical specimens of osteosarcomas and investigate its association with the patients' prognosis.

METHODSThe expression of SCUBE3 protein was detected in 5 osteosarcoma cell lines using Western blotting. CCK8 assay was used to assess the effect of SCUBE3 suppression mediated by two specific small interfering RNAs (siRNAs) on the proliferation of U2OS osteosarcoma cells, and the cell cycle changes were detected using flow cytometry. Immunohistochemistry was performed to detect the expression of SCUBE3 in 60 osteosarcoma tissues, and Kaplan-Meier method was performed for survival analysis of the patients.

RESULTSCompared with osteoblast hFOB1.19 cells, the osteosarcoma cell lines all showed significantly higher expressions of SCUBE3. In U2OS cells, suppression of SCUBE3 expression by siRNA significantly inhibited the cell proliferation (P<0.05). Kaplan-Meier survival analysis indicated that patients with high SCUBE3 expression had worse prognosis than those with low SCUBE3 expression (P=0.036).

CONCLUSIONSCUBE3 is up-regulated in the 5 osteosarcoma cell lines and in primary osteosarcoma tissues to promote the proliferation of osteosarcoma cells. A high SCUBE3 expression in osteosarcoma tissues is associated with a poor prognosis of the patients, suggesting that SCUBE3 can serve as a potential therapeutic target for osteosarcoma.

Bone Neoplasms ; metabolism ; pathology ; Calcium-Binding Proteins ; metabolism ; Cell Cycle ; Cell Line, Tumor ; Cell Proliferation ; Flow Cytometry ; Humans ; Immunohistochemistry ; Kaplan-Meier Estimate ; Osteosarcoma ; metabolism ; pathology ; Prognosis ; RNA, Small Interfering ; Up-Regulation

Objective To detect the expression of SCUBE3 in human osteosarcoma cell lines and surgical specimens of osteosarcomas and investigate its association with the patients' prognosis. Methods The expression of SCUBE3 protein was detected in 5 osteosarcoma cell lines using Western blotting. CCK8 assay was used to assess the effect of SCUBE3 suppression mediated by two specific small interfering RNAs (siRNAs) on the proliferation of U2OS osteosarcoma cells, and the cell cycle changes were detected using flow cytometry. Immunohistochemistry was performed to detect the expression of SCUBE3 in 60 osteosarcoma tissues, and Kaplan-Meier method was performed for survival analysis of the patients. Results Compared with osteoblast hFOB1.19 cells, the osteosarcoma cell lines all showed significantly higher expressions of SCUBE3. In U2OS cells, suppression of SCUBE3 expression by siRNA significantly inhibited the cell proliferation (P<0.05). Kaplan-Meier survival analysis indicated that patients with high SCUBE3 expression had worse prognosis than those with low SCUBE3 expression (P=0.036). Conclusion SCUBE3 is up-regulated in the 5 osteosarcoma cell lines and in primary osteosarcoma tissues to promote the proliferation of osteosarcoma cells. A high SCUBE3 expression in osteosarcoma tissues is associated with a poor prognosis of the patients, suggesting that SCUBE3 can serve as a potential therapeutic target for osteosarcoma.

Objective To detect the expression of SCUBE3 in human osteosarcoma cell lines and surgical specimens of osteosarcomas and investigate its association with the patients' prognosis. Methods The expression of SCUBE3 protein was detected in 5 osteosarcoma cell lines using Western blotting. CCK8 assay was used to assess the effect of SCUBE3 suppression mediated by two specific small interfering RNAs (siRNAs) on the proliferation of U2OS osteosarcoma cells, and the cell cycle changes were detected using flow cytometry. Immunohistochemistry was performed to detect the expression of SCUBE3 in 60 osteosarcoma tissues, and Kaplan-Meier method was performed for survival analysis of the patients. Results Compared with osteoblast hFOB1.19 cells, the osteosarcoma cell lines all showed significantly higher expressions of SCUBE3. In U2OS cells, suppression of SCUBE3 expression by siRNA significantly inhibited the cell proliferation (P<0.05). Kaplan-Meier survival analysis indicated that patients with high SCUBE3 expression had worse prognosis than those with low SCUBE3 expression (P=0.036). Conclusion SCUBE3 is up-regulated in the 5 osteosarcoma cell lines and in primary osteosarcoma tissues to promote the proliferation of osteosarcoma cells. A high SCUBE3 expression in osteosarcoma tissues is associated with a poor prognosis of the patients, suggesting that SCUBE3 can serve as a potential therapeutic target for osteosarcoma.

OBJECTIVETo detect the expression of CXCL14 in human osteosarcoma cell lines and tissues and investigate its association with the prognosis of the patients.

METHODSRT-PCR, enzyme-linked immunosorbent assay (ELISA) and real-time PCR were used to detect the expression of CXCL14 in 4 osteosarcoma cell lines and in 40 pairs of osteosarcoma tissues and adjacent muscular tissues. CCK8 assay and colony formation assay was used to assess the effect of CXCL14 suppression mediated by two specific siRNAs on the proliferation of U2OS osteosarcoma cells. Immunohistochemistry was performed to detect the expression of CXCL14 in 58 osteosarcoma tissues, and Kaplan-Meier method and log-rank test were performed for survival analysis of the patients.

RESULTSSignificant up-regulation of CXCL14 expression was found in the osteosarcoma cell lines and in osteosarcoma tissues compared with the adjacent muscles (P<0.01). In U2OS cell, suppression of CXCL14 expression by siRNA significantly inhibited the cell proliferation (P<0.01) and colony formation rate (P<0.05). Kaplan-Meier survival analysis indicated that patients with high CXCL14 expression had worse prognosis than those with low CXCL14 expression (P=0.02).

CONCLUSIONCXCL14 is up-regulated in both osteosarcoma cell lines and primary osteosarcoma tissues to promote the proliferation of osteosarcoma cells. A high CXCL14 expression in osteosarcoma tissues is associated with a poor prognosis, suggesting the that CXCL14 serve as a potential therapeutic target for osteosarcoma.

Bone Neoplasms ; metabolism ; pathology ; Cell Line, Tumor ; Cell Proliferation ; Chemokines, CXC ; metabolism ; Humans ; Osteosarcoma ; metabolism ; pathology ; Prognosis