Objective To investigate the expression of interleukin-37 (IL-37) in placenta tissue and its relationship with the pathogenesis of severe preeclampsia. Methods All the patients were recruited in Qilu Hospital of Shangdong University from November 2012 to November 2013. Among them, thirty patients with severe preeclampsia were assigned to the preeclampsia group, and thirty-one healthy pregnant women were assigned to the control group. Immunohistochemistry of SP was used to detect the IL-37 protein expression in placenta tissue of the two groups. The expression level of IL-37 in placenta tissue of the two groups was detected by western blot. Besides, reverse transcription(RT)-PCR was used to detect the expression of IL-37 mRNA. The correlation between the expression of IL-37 mRNA and the delivery gestational age, body mass index(BMI)was analyzed. Results (1) IL-37 were detected in the placenta of both the preeclampsia group and the control group, and the expression site mainly located in the syncytiotrophoblast, with a small amount in cytotrophoblast.(2)The expression levels of IL-37 protein in the preeclampsia group and the control group were 0.59 ± 0.39 and 0.88 ± 0.22, respectively. The IL-37 mRNA levels in the preeclampsia group and the control group were 0.55 ± 0.17 and 1.11 ± 0.21, respectively. Both decreased significantly when compared to the control group (P<0.05). (3) Significant correlation between the expression of IL-37 mRNA and the delivery gestational weeks(r=0.209, P>0.05) was seen neither in the preeclampsia group nor in the control group(r=-0.053, P>0.05). In the severe preeclampsia group, the pregnant women′s BMI had no significant correlation with IL-37 mRNA expression of placenta tissue(r=0.102, P>0.05), neither did the control group(r=-0.115, P>0.05). Conclusion IL-37 expression is significantly lower in severe preeclampsia placenta tissue than that in the normal pregnant women, which may play a protective role in the course of severe preeclampsia.

Objective To investigate the expression of growth arrest-specific protein 6 (Gas6) in the placenta and decidua tissues and its relationship with the pathogenesis of preeclampsia. Methods All the patients were recruited in Qilu Hospital of Shangdong University from October 2013 to June 2014. Among them, thirty-two women with early-onset severe preeclampsia who received cesarean section were assigned to the preeclampsia group, and thirty healthy pregnant women who received cesarean section were defined as the control group. Blood glucose, blood lipids, platelet count, D-dimer levels and other clinical indicators of the two groups were detected. Immunohistochemistry of SP was conducted to identify the localization of Gas6 protein in the placenta and decidua tissues. And reverse transcription (RT)-PCR was performed for quantitative analysis of Gas6 RNA expression in placentas. The correlations between placental Gas6 mRNA levels with clinical indicators were analyzed. Results (1) The gestational age at delivery, blood pressure, serum albumin, platelet count and birth weight of fetuses showed statistically significant differences between the two groups(P<0.05). (2) The Gas6 protein expressed in the cytoplasm and nucleus of the syncytiotrophoblasts and decidual cells in the placenta and decidual tissues of the two groups. (3) The Gas6 mRNA expression elevated significantly in the placenta of preeclampsia group (0.60 ± 0.38) when compared to that of the control group (0.34±0.22;P<0.05). (4) The expression of Gas6 mRNA was positively related with body mass index, diastolic blood pressure, systolic blood pressure, free fatty acids and creatinine (P<0.05), while it was negatively associated with serum albumin(P<0.05). Conclusion The high expression of Gas6 in the placenta and decidua tissues may be related to the pathogenesis of severe preeclampsia.

To observe the effects of ursolic acid (UA) on insulin resistance and cell differentiation in 3T3-L1 adipocytes and to explore the mechanisms.

Objective To investigate whether there is correlation exists in the effection of chronic unpredictable stress on active avoidance behavior and electroencephalogram ( EEG) of rat. Methods Twenty male SD rats (weight～200 g) were randomly divided into control group( n= 10) and model group( n- 10). Rats in model group were subjected to chronic unpredictable stress . Active avoidance response were observed with GeminiTM avoid system and EEG power spectrum was evaluated with Powerlab system. Results The failure rate in active avoidance test was correlation with delta wave power in EEG. Compared with control group, rats in model group had reduced failure rate in active avoidance task(42 ±36)% vs (82 ±30)% , P＜0.05). The EEG power spectrum of model group rats increased in delta band((47.09 ±22.86)μV2 vs (22. 55 ± 11. 57) μV2, P＜0. 05), which had the significant difference between the two group rats. The failure rate of active avoidance task in model group rats was positive correlation with EEG power spectrum of delta wave (r = 0. 717, P ＜ 0. 05) . Conclusion Chronic unpredictable stress facilitated active avoid behavior and changed spontaneous EEG, which suggested chronic unpredictable stress actived the neurotransmitter network system involved with active avoidance task in central nervous system. Brain cognitive function correlated positively with brain electrophysiology activity measured in chronic unpredictable stress induced rat model.

Objective To investigate the effect of gut bacteria under chronic colitis on the progression of hepatoma in mice.Methods 22 hepatitis B virus (HBV) -transgenic mice ( male, 8 weeks) were randomly divided into two groups, one group (n =10) was fed the drinking water containing 2% dextran sodium sulphate(DSS)to induce chronic colitis and the control group(n =12)was fed with normal drinking water.In order to investigate the effect of gut microbes, 7 male HBV-transgenic mice(8 weeks, with no detectable hepatoma under microscopy) were cohoused with 4 mice with hepatoma for 16 weeks.Results No significant liver cell damage was observed in the group of the mice fed with 2% DSS-containing drinking water.By the 22 -week old,9 of the 10 mice(90.0%) fed with 2% DSS-containing drinking water, 2 of the 12 mice(16.7%) fed with normal drinking had hepatoma.Both the hepatoma incidence and the tumor numbers in the group of mice fed with DSS-containing water were significantly higher than that in the controls (P =0.002 and P =0.028respetively).Compared to controls, the bacteria family Prevotella (P =0.022) and Anaeroplasma (P =0.014) reduced significantly in the mice with induced chronic colitis.All the mice (n =7) cohoused with the mice with hepatoma had the liver tumor developed at 24 -week-old.Conclusion Alterations of gut bacteria under chronic colitis may promote the development of liver cancer.

This study was aimed to determine the solubility an d oil-water partition coefficient of main active com-ponents in Ge-Gen Qin-Lian (GGQL) Tablets (puerarin, baicalin and berberine hydrochloride) in phosphate buffer solution of different pH values and under the background of many components. Solubility of puerarin, baicalin and berberine hydrochloride in different medium pH, and oil-water partition coefficient of the octanol-water and oc-tanol-buffer system were determined by HPLC method. The results showed that the solubility and oil-water partition coefficient of puerarin, baicalin and berberine hydrochloride were varied with the change of pH, and varied under the background of components. At pH 7.4, the solubility was the biggest;puerarin was 7.56 mg·mL-1;baicalin was 17.07 mg·mL-1; berberine hydrochloride was 3.57 mg·mL-1. Oil-water partition coefficient P of these components at pH 1.0 was bigger;puerarin was 0.420 (lgP=-0.38);baicalin was 10.783 (lgP=1.03);berberine hydrochloride was 0.267 (lgP=-0.57). It was concluded that lipid solubility of puerarin, baicalin and berberine hydrochloride at pH 1.0 was better. It was speculated that better absorption in the stomach, and low lipid solubility under other pH. It was speculated that lipid solubility may be one of the reasons affecting the intestinal absorption.

Objective To identify primary gout biomarkers. Methods Isobaric tags for relative and absolute quantitation (iTRAQ) technique combined with liquid chromatography-tandem mass spectrometry (LC-MS/MS) was used to screen differentially expressed proteins, and to identify potential biomarkers by analysis of the biological process, cellular components, molecular functions, KEGG pathways and protein-protein interactions. Difference between two groups were measured byt test. Results We identified 95 differentially expressed proteins (50 up-regulated proteins and 45 down-regulated proteins, respectively), and 20 significant KEGG pathways. Among them, glyceraldehyde-3-phosphate dehydrogenase (GAPDH), α-enolase (ENOA), phosphoglycerate kinase (PGK1), glucose-6-phosphate isomerase (G6PI) and moesin might play a role in the pathogenesis of primary gout. Conclusion iTRAQ technology can detect differentially expressed proteins from proteome, provides a strong theoretical basis for the study of biomarkers and evidence for the mechanisms in primary gout. However, further studies are needed.

Objective: To analyze the association between non-school sedentary time and myopia among primary and secondary school students with different levels of physical activity, so as to provide data for precise measures to prevent and control myopia. Methods: From September to December 2019, stratified cluster sampling was used to select 7 872 primary and secondary students in grades 4 to 12, middle and high school students from Hefei, Suzhou, Chizhou and Wuhu Cities in Anhui Province. Face-to-face questionnaires and vision examinations were conducted to collect demographic information, physical activity time, sedentary study time and visual health status. Potential categories were analyzed for different types of physical activity time, and Logistic regression was used to assess the relationship between non-school sedentary time and myopia at different levels of physical activity. Results: A total of 2 976 primary and secondary school students were found with high physical activity levels and 4 896 primary and secondary school students with low physical activity levels. The proportion of low physical activity was higher in girls than in boys (68.7% vs . 55.6%), and the differences were statistically significant ( χ 2=143.97, P <0.01). The overall screening myopia rate was 48.2%, with statistically significant differences among female students (53.0%) compared with male students (43.3%), urban students ( 51.8 %) compared with rural students (44.5%), and longer non-school sedentary time students (60.6%) compared with average (45.1%) and shorter (42.1%) non-school sedentary time students, and the differences were statistically significant ( χ 2=73.15, 41.96 , 161.74, P <0.01). Adjusting for confounders such as residence, grade, gender, age, father s education, mother s education, and body mass index (BMI), multivariate Logistic regression analysis revealed that prolonged after-school sedentary study was positivety correlated with myopia among primary and secondary school students of low physical activity levels ( OR=1.52, 95%CI=1.27-1.83, P <0.01), and there was no statistical association between after-school sedentary time and myopia in primary and secondary school students with high physical activity levels ( P >0.05). Conclusion Attention should be paid to non-school sedentary time for primary and secondary school students with low physical activity levels. And students who spend a lot of time sitting outside of school should be encouraged to maintain high physical activity levels to reduce the risk of myopia.

Objective: To explore the association of vitamin D deficiency with anxiety and depressive symptoms as well as their comorbidity, so as to provide references for improving the mental health of children and adolescents. Methods: From October to December 2021, a total of 1 323 students from four middle schools in Shenzhen were selected by using convenience sampling method for a questionnaire survey and physical examination. Fasting blood samples were collected to detect vitamin D levels. The Chi square test and multiple Logistic regression model were used to analyze the association of vitamin D deficiency with anxiety and depressive symptoms and their comorbidity among middle school students. Results: The detection rates of anxiety, depressive, and thier comorbidities in middle school students were 33.0%, 21.5% and 16.3%, respectively. After adjusting for confounding factors, vitamin D deficiency was positively associated with the risk of anxiety symptoms ( OR=1.59, 95%CI =1.02-2.46), depressive symptoms ( OR=1.94, 95%CI =1.22-3.09) and anxiety depressive comorbid symptoms ( OR=1.75, 95%CI =1.06-2.90) in secondary school students ( P ＜0.05). Conclusion Vitamin D deficiency is associated with an increased risk of anxiety, depressive and their co morbidity symptoms in middle school students, and the directionality of the association should be further studied.

Objective To investigate six yearsˊ outcome of children with asthma. Methods Children with asthma diagnosed in the epidemiological survey of childhood asthma in urban area of Beijing in 2010 were selected in this study. The field follow-up was conducted in 2016(6 years later)to obtain information about asthma attack,di-sease control,medication usage,and comorbidities of allergic diseases. The skin prick test,lung function and exhaled ni-tric oxide were performed during field follow - up stage. Results Sixty - four children,aged 7 - 19 years old [(13. 59 ± 3. 48)years old],completed the field follow-up survey. Among 35. 9%(23/64 cases)children,the asth-ma symptoms still persisted within 2 years(without remission),while 64. 1%(41/64 cases)children had no symp-toms within 2 years and above(remission). The course of children without remission(9. 0 years)was significantly lon-ger than that of children with remission(5. 5 years),and there was statistical significance(z＝ -3. 775,P<0. 001). Among the children without remission,the number of uncontrolled children in the last month accounted for 13. 0%(3/23 cases),partially controlled for 17. 4%(4/23 cases),and under controlled for 69. 6%(16/23 cases). The majority of unrelieved children were treated with intermittent control drug[43. 5%(10/23 cases)υs. 12. 2%(5/41 cases), χ2 ＝8. 036,P<0. 01]. A total of 47. 8%(11/23 cases)of children without remission were completely unaffected by physical activity,while 92. 7%(38/41 cases)of children with clinical remission were completely unaffected by physi-cal activity(χ2 ＝14. 117,P<0. 001). The proportion of children without remission with eczema and atopic dermatitis lasting longer than 6 years old was 56. 5%(13/23 cases),which was significantly higher than that of children with re-mission[29. 3%(12/41 cases),χ2 ＝4. 598,P<0. 05]. In 2010 and 2016,there were 46 children with allergen re-sults. Compared with 2010,the proportion of animal fur and pollen allergy increased in 2016[19. 6%(9/46 cases)υs. 52. 2%(24/46 cases),36. 9%(17/46 cases)υs. 67. 4%(31/46 cases)],and there were statistical significances (χ2 ＝10. 632,8. 538,all P<0. 01). In 2016,the number and degree of total allergens in the clinical unrelieved chil-dren were higher than that in the relieved children. Further analysis showed that the unrelieved children had higher cigarette allergy positivity(21. 7% υs. 2. 5%,χ2 ＝4. 239,P<0. 05). There was no significant difference in lung func-tion and exhaling nitric oxide between the clinical unrelieved children and the relieved children. Conclusions Six years later,the proportion of animal fur and pollen allergy increased in children with asthma. Compared with children with remission,the children without remission had more treatment with intermittent control drug,with higher proportion of eczema and atopic dermatitis over six years old,and higher percentage of cigarette allergy positivity.