Objective To explore the relationship between bronchial asthma severity and the levels of nerve growth factor(NGF) in induced sputum.Methods One hundred and seventy children with asthma were divided into two groups, including 87 cases of chronic duration group and 83 cases of acute phase group.Before treatment lung function test was conducted, induced sputum was taken immediaitely, the levels of NGF were measured by enzyme-linked immunosorbent assay and Eosinophils (EOS)in induced sputum were count.Comparative analysis was conducted.Results The levels of NGF,FEV1 ,FVC,PEF and EOS in duration group were significantly elevated compared with acute phase group (all P ＜ 0.05).Significant differences in NGF, FEV1, FVC, PEF and Eos were found by comparison of different extent in chronic duration group and acute phase group (all P ＜ 0.05), the levels of NGF were positive correlated with illness severity (all P ＜ 0.05) in children with afsthma in chronic duration and acute phase, the levels of NGF were positive correlation with FEV1, FVC, PE-Fand EOS (all P ＜ 0.05) in children with asthma in chronic duration, the levels of NGF were positive correlation with FEV1 and PEF in children with Asthma in acute phase,but the levels of NGF has no correlation with FVC and EOS (all P ＞ 0.05) in children with Asthma in acute phase.Conclusion The levels of NGF in induced sputum of children with asthma in acute phase are markedly elevated compared with children with asthma in chronic duration, the levels of NGF are positive correlated with illness severity in children with asthma in chronic duration and acute phase.

ObjectiveTo study the effect of astragaloside Ⅳ(AS-Ⅳ) on glucose-induced podocyte adhesion and its possible mechanism. MethodsConditionally immortalized mouse podoeytes were treated with 10, 50, 100 mg/L AS-Ⅳ and with 100 mg/L AS-Ⅳ for 3, 6, 12, 24 h. Cell attachment was measured by fluorescence and centrifugation cell adhesion assays, respectively. Expression of α3β1 integrin mRNA and protein was examined by real-time PCR and Western blot. ResultsHigh glucose induced a significant reduction in adherent podocytes compared to normal glucose group (P<0.05). AS-Ⅳ improved high glucose-induced podocyte adhesion in a time- and dose-dependent manner. Real-time PCR and Western blot analysis revealed that high glucose-induced down-regulation of α3β1 integrin in podocytes were significantly meliorated by AS-Ⅳ (P<0.05). ConclusionAstragaloside Ⅳ improved high glucose-induced podocyte adhesion which may be mediated through α3β1 integrin up-regulation.

The hydrophilicity of the normal decoction pieces (NDP) of Indigo Naturalis is not good, therefore, it is not suit for decoctions. In this paper, powder modification technology is used and some NDP and alcohol are ground together in the vibromill to prepare the hydrophilic decoction pieces (HDP) of Indigo Naturalis. Initially, the properties of NDP, ultrafine decoction pieces (UDP) and HDP are compared, the hydrophilicity of UDP was promoted slightly, that of HDP is promoted dramatically. Then, three batches of Indigo Naturalis are prepared to HDP separately, but there is no obvious difference in the contact angle. Furthermore, the size distribution, surface area and micro-shape of HDP are bigger than that of UDP and smaller than NDP. The contents of indigo and indirubin in three decoction pieces are the same, as well as the species of inorganic substance, although there is a little difference in the proportion of five inorganic substances. The fact suggests the change of physical state and the qualitative and quantitative change of organism and inorganic substances are not the main factors to influence the hydrophilicity. In addition, hydroxyl, methylene and methyl can be identified at the wavenumber of 3 356 cm(-1) and 1 461 cm(-1) in infrared spectrum; the content of alcohol in HDP is 0.67% measured by gas chromatogram. The stability of HDP in the heating condition is studied, the fact suggests the hydrophilic effect of HDP at 40 degrees C is relatively stable. All above research suggests that the alcohol is the main factor to influence the hydrophilicity and maybe the intermolecular force which fixed alcohol molecule on the surface of Indigo Naturalis is the basic principle to produce the hydrophilicity.

Objective:To prepare the lithium-doped poly-glycerol sebacate (PGS-Li) scaffold using the specific effects of lithium ions and the excellent performance of PGS, and to provide the basis for its application prospects in cementation tissue engineering scaffold.Methods:The scaffolds were divided into two groups.The PGS-Li scaffolds prepared by adding lithium phosphate during the PGS cross-linking process were used as PGS-Li group, and the PGS scaffolds synthesized by the equal-purification of sebacic acid and glycerol were used as PGS group.The molecular weights of the scaffolds in two groups were determined by gel permeation chromatography.The structures of the scaffolds in two groups were analyzed by fourier transform infrared spectroscope.The surface morphology and the porosities and the pore sizes of the scaffolds in two groups were observed by scanning electron microscope.X-ray photoelectron (XPS) spectroscope and inductively coupled plasma optical emission spectrometer were used to determine the Li ion contents in the scaffolds in two groups.Thermogravimetric analyzer was used to analyze the thermal stabilities of the scaffolds in two groups.Contact angle measuring instrument was used to compare the hydrophilicities of the scaffolds in two groups.In vitro weight loss test was used to determine the degradation rates of the scaffolds in two groups.The OCCM-30cells were divided into experimental group (added with PGS-Li scaffold extract) , PGS group (added with PGS scaffold extract) and blank control group (added with DMEM culture medium) .MTT assay was used to detect the proliferation activities of cells in various groups at different time (24, 48and 72h) ;the cell morphology was observed by calcein-AM staining.Results:The gel permeation chromatography results showed that the molecular weight of the PGS-Li scaffold was slightly larger than that of the PGS scaffold.The specific absorption peak of phosphate was detected in the fourier infrared spectrum of the PGS-Li scaffold.The scaffolds in two groups had irregular three-dimensional network structures under scanning electron microscope, and the pore size was 20-160μm, the porosity of PGS scaffold was (53.92±2.18) ％, and the porosity of PGS-Li scaffold was (53.58±1.73) ％, there was no statistical difference between two groups (P＞0.05) .The XPS results showed that a peak appeared at 54.9eV in PGS-Li group, which coincided with the Li 1s binding energy, while the inductively coupled plasma emission spectrometer results showed that the Li ion content in the PGS-Li scaffold was 0.084％.The thermogravimetric analysis results showed that PGS-Li scaffolds began to degrade at a higher temperature and ceased at a lower temperature compared with PGS scaffolds.The contact angle measurement results indicated that both the materials were hydrophilic materials;the contact angle of PGS scaffold meterial was 78.26°±2.00°, and the contact angle of the PGS-Li scaffold material was 69.78°±1.15°;there was statistical difference between two groups (P＜0.05) .The in vitro degradation experiments showed that the degradation rate of PGS-Li scaffolds was faster than that of PGS scaffolds.The proliferation activity of OCCM-30cells in PGS-Li group had no significant difference compared with PGS group and blank control group (P＞0.05) .The calcein-AM staining results showed the green fluorescence in the OCCM-30cells in PGS and PGS-Li groups, and there were no significant changes in the morphology of cementoblasts.Conclusion:PGS-Li scaffolds have similar composition and structure to PGS scaffolds, and have better performance in hydrophilicity and thermal stability.PGS-Li scaffolds have no effect on the proliferation of cementoblasts and have broad application prospects in cementum tissue engineering.

Objective: To explore the relationship between sleep quality and mental health among middle school students, so as to provide scientific basis for improving mental health among adolescents. Methods: From September to December 2023, a stratified cluster random sampling method was employed to select 5 713 middle school students aged 13-18 from Shanghai, Suzhou, Taiyuan, Wuyuan, Xingyi, and Urumqi. Sleep quality and mental health were assessed using the Pittsburgh Sleep Quality Index (PSQI) and the Brief Adolescent Mental Health Assessment Questionnaire. Spearman correlation analysis and linear regression analysis were used to explore the relationship between sleep quality and various dimensions of mental health among middle school students. Results: There was a statistically significant difference in the total PSQI score among middle school students of different age groups ( H=226.49, P <0.01), and there was no statistically significant difference in the psychological health scores of middle school students in different age groups ( H=5.37, P >0.05). In terms of gender, the total PSQI score for girls [5.00 (3.00, 6.00)] was higher than that for boys [4.00 (2.00, 6.00)]; additionally, boys had higher mental health scores [85.00 (75.00, 90.00)] than females [83.00 (70.00, 89.00)], with statistically significant differences ( Z=-10.90, -8.16, P <0.01). Spearman correlation analysis revealed a negative correlation between total PSQI scores and mental health scores ( r=-0.51, P <0.05) among middle school students. After controlling for variables such as maximum oxygen uptake, physical activity and nutritional status, linear regression analysis further confirmed that higher PSQI scores were associated with lower mental health scores ( B=-3.76, 95%CI = -4.15 to -3.38, P <0.01). Conclusion There is a negative correlation between PSQI scores and mental health scores among middle school students, indicating that improving sleep quality may contribute to better mental health among middle school students.

Objective:To evaluate the diagnostic value of rapid on-site evaluation (ROSE) performed by endoscopists for solid pancreatic lesions requiring tissue for immunohistochemistry (IHC) staining with different approach of endoscopic ultrasound-guided tissue acquisition (EUS-TA).Methods:After screening 1 573 cases who underwent EUS-TA operation at the Endoscopy Center of Peking Union Medical College Hospital between August 2018 and October 2022, a total of 65 cases of solid pancreatic lesions whose diagnosis rely on IHC staining was collected and summarized with clinical data of each case. Among 65 cases, there were 46 cases of pancreatic neuroendocrine tumors (PNETs), 13 cases of pancreatic solid pseudo-papillary tumors (SPTs), and 6 cases of lymphomas and mesenchymal. Patients were categorized into ROSE group (36 cases) and non-ROSE group (29 cases) according to the presence or absence of endoscopists performed ROSE during EUS-TA operation. They were further divided into subgroups of FNA-ROSE (26 cases), FNB-ROSE (10 cases), FNA-non-ROSE (24 cases) and FNB-non-ROSE (5 cases) according to the type of EUS-TA. Diagnostic accuracy and IHC success rate were compared between different groups and subgroups. Binomial logistic multifactorial regression analysis was used to evaluate the influence of ROSE and EUS-TA type on diagnostic accuracy and IHC success rate.Results:There were no statistically significant differences between ROSE group and non-ROSE group in terms of age, gender, bilirubin level, CA19-9 level, lesion site, lesion size, composition ratio of diagnosis, and surgical rate. The differences in mean size of lesions, needle gauge, location of puncturation, and number of needle pass between subgroups were not statistically significant. The diagnostic accuracy was 88.9% in ROSE group and 79.3% in non-ROSE group, and the difference between the two groups was statistically significant ( P=0.023). The diagnostic accuracy of FNA-ROSE group was higher than that of FNA-non-ROSE group (88.5% vs 75.0%), but the difference was not statistically significant ( P>0.100). The differences in diagnostic accuracy and success rate of IHC between FNB-ROSE group and FNB-non-ROSE group were not statistically significant. Binomial logistic multifactorial regression analysis did not reveal any independent influences on diagnostic accuracy. Conclusions:ROSE performed by endoscopists improved diagnostic accuracy of EUS-TA in solid pancreatic lesions requiring IHC staining, and therefore is potentially valuable for improving the diagnostic efficiency of EUS-TA for such diseases.

To determine the main components of the fishy smell of the Eupolyphaga Steleophaga, and to provide a theoretical basis for deodorizing the Eupolyphaga Steleophaga. METHODS Head space-solid phase microextraction-gas chromatography-mass spectrometry was used to identify the components of 10 batches of Eupolyphaga Steleophaga, and area normalization method and chemometrics method were used to analyze the smelly gas of different batches. Odor activity value(OAV) was used to evaluate the contribution of odor components and identify key odor components. RESULTS A total of 87 volatile odor components were identified, the key fishy smell compounds(OAV≥1) were m-methylphenol, dimethyltrisulfide, 4-methylphenol, 2-methyliso-borneol, 2-etzol, 4-methylvaleric acid, iso-valeric acid, etc. Modified fishy gas composition(0.1