Epidemiological characteristics of cardio-metabolic risk factors among children and adolescents aged 7-17 years in 4 provinces of China / 中华流行病学杂志

Objective: This study aimed to investigate the epidemiological characteristics of cardio-metabolic risk factors among children and adolescents aged 7-17 years in (Hebei, Zhejiang, Shaanxi, Hunan) 4 provinces of China and the influence of demographic and economic characteristics on them. Methods: A total of 1 747 children and adolescents aged 7-17 from a Community-based Cohort Study on Nervous System Disease in 2018 were selected. High waist circumference, central obesity, elevated TG, elevated TC, elevated LDL-C, decreased HDL-C, elevated blood pressure, elevated blood glucose, and clustering of risk factors was analyzed. χ2 test was used for univariate analysis, multivariate logistic regression was used to analyze the correlation between demographic and economic factors and risk factors, and the Cochran-Armitage trend test was used for trend analysis. Results: The detection rates of high waist circumference, decreased HDL-C, elevated blood pressure, elevated TG, elevated blood glucose, central obesity, elevated TC, and elevated LDL-C were 29.08%, 15.28%, 13.17%, 13.05%, 11.79%, 7.33%, 6.53%, and 5.15%, respectively. The rate of clustering of risk factors was 18.37%. Multivariate logistic regression analysis showed that the risk of high waist circumference in girls was higher than that in boys (OR=1.67, 95%CI: 1.26-2.22), and the risk of elevated blood glucose and clustering of risk factors was lower than that in boys (OR=0.69, 95%CI: 0.49-0.99; OR=0.72, 95%CI: 0.53-0.99). The risk of high waist circumference, decreased HDL-C, and clustering of risk factors in 13-17 years old group was higher than that in the 7-year-olds group (OR=2.24, 95%CI: 1.65-3.04; OR=1.59, 95%CI: 1.20-2.11; OR=1.75, 95%CI: 1.26-2.44), but the risk of central obesity was lower (OR=0.54, 95%CI: 0.37-0.78). The risk of elevated TC, elevated TG, and decreased HDL-C in children and adolescents in southern was higher than that in northern parts of China (OR=1.88, 95%CI: 1.25-2.83; OR=1.61, 95%CI: 1.17-2.22; OR=1.55, 95%CI: 1.19-2.04), but the risk of high waist circumference and central obesity was lower than that in northern China (OR=0.57, 95%CI: 0.43-0.75; OR=0.62, 95%CI: 0.42-0.90). The risk of decreased HDL-C in rural children and adolescents was higher than in urban children and adolescents (OR=1.36, 95%CI: 1.02-1.83). The risk of multiple risk factors increased with the increase in average monthly household income per capita and BMI level. Conclusions: High waist circumference, decreased HDL-C and elevated blood pressure were prominent cardio-metabolic risk factors among children and adolescents aged 7-17 years in 4 provinces of China in 2018. The region, average monthly household income per capita, and BMI were the main influencing factors of cardio-metabolic risk factors.

Relationship between nutrient-related dietary pattern and mild cognitive impairment in middle-aged and elderly people in 15 provinces of China / 中华流行病学杂志

Objective: To explore the relationship between nutrient-related dietary pattern and mild cognitive impairment (MCI) in middle-aged and elderly people. Methods: A total of 6 444 middle-aged and elderly people aged ≥55 years were selected in 2018 China Health and Nutrition Survey. MCI was evaluated by Mini-Mental State Examination, and the intakes of various foods were obtained by consecutive 3-day 24-hour dietary survey and weighing method. The intakes of various nutrients and total dietary energy were calculated based on the food composition table. Demographic and social information, lifestyle and health status of the respondents were obtained through questionnaire survey and physical measurements. In this study, vitamin C, vitamin E, zinc, iron, copper and selenium were selected as dependent variables. Nutrient-related dietary patterns were extracted by reduced rank regression method, and the relationship between dietary patterns and MCI was analyzed by multivariate logistic regression model. Results: Six dietary patterns were extracted in this study, and dietary pattern 1 with the highest explanatory degree was selected for subsequent analysis. Dietary pattern 1 was characterized by higher intakes of legume products, vegetables, fruits, nuts, pork, aquatic products and plant oil. Multivariate logistic regression analysis showed that the risk of MCI was lower in Q4 dietary score group than in Q1 dietary score group (OR=0.69, 95%CI: 0.49-0.98) in the 55-64 age group. In people with sleep duration of 8 hours per day, the risk of MCI was reduced in Q2, Q3 and Q4 dietary score groups compared with the Q1 dietary score group, with OR values of 0.68 (95%CI: 0.51-0.92), 0.67 (95%CI: 0.49-0.92) and 0.65 (95%CI: 0.45-0.92), respectively. Interaction analysis showed that the risk for MCI increased in those aged 65-74 years and ≥75 years compared with those aged 55-64 years in Q1 dietary score group. However, the risk for MCI decreased in both age groups as dietary pattern scores increased. Compared with those with sleep duration less or more than 8 hours per day in Q1 dietary score group, those with sleep duration of 8 hours per day in Q2 and Q3 dietary score groups had a reduced risk for MCI. Conclusion: Dietary patterns with higher intakes of legume products, vegetables, fruits, nuts, pork, aquatic products, and plant oil are negatively associated with MCI in people aged 55-64 years and those who slept 8 hours per day, and may reduce the risk of MCI with aging.

Association of Red Meat Usual Intake with Serum Ferritin and the Risk of Metabolic Syndrome in Chinese Adults: A Longitudinal Study from the China Health and Nutrition Survey / 生物医学与环境科学（英文）

Objective@#The present study aimed to investigate the association of red meat usual intake with metabolic syndrome (MetS), and explore the contribution of red meat usual intake to serum ferritin.@*Methods@#Based on the data from the longitudinal China Health and Nutrition Survey (CHNS), 2,797 healthy adults aged 18-75 years without hypertension, diabetes, and MetS were selected in 2009 as subjects and follow-up studies were carried out till 2015. We used the National Cancer Institute (NCI) method to estimate the usual intake of foods. Multivariable logistic regressions were performed to evaluate the association between red meat usual intake and the risk of MetS. Quantile regression analysis was used to study the relationship between red meat consumption and serum ferritin levels.@*Results@#After adjusting for potential confounders, red meat, and fresh red meat were positively associated with the risk of MetS ( = 1.41, 95% : 1.05-1.90 and = 1.37, 95% : 1.02-1.85, respectively). These relationships showed increasing trend ( < 0.05). The level of serum ferritin increased significantly with the number of MetS components ( < 0.05). The quantile regression analysis showed that red meat and fresh red meat usual intake had a significant positive association with serum ferritin levels across the entire conditional serum ferritin distribution ( < 0.05). Processed red meat did not exhibit a similar association.@*Conclusion@#Higher red meat usual intake was associated with an increased risk of MetS and elevated serum ferritin levels.

Epidemics of overweight and obesity among growing childhood in China between 1997 and 2009: Impact of Family Income, Dietary Intake, and Physical Activity Dynamics / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Obesity has become a major health problem among children and adolescents worldwide. This study aimed to examine the trends of overweight and obesity among childhood in China and assess their associations with family income, dietary intake, and physical activity (PA) between 1997 and 2009.</p><p><b>METHODS</b>Two waves of cross-sectional data of Chinese children and adolescents aged 7-17 years from the China Health and Nutrition Survey were used. Weight and height were measured following standardized procedures. Dietary intake was assessed by 3 consecutive 24-h recalls. Childhood overweight and obesity were defined using the International Obesity Task Force-recommended body mass index cut-offs. Multivariate linear regression analysis was used to examine the associations of family income with diet intakes and PA. Multivariate logistic regression analysis was conducted to assess the associations of overweight and obesity with family income, dietary intake, and PA.</p><p><b>RESULTS</b>The prevalence of childhood overweight and obesity increased from 12.6% in 1997 to 22.1% in 2009, particularly in the medium- and high-family income groups, which increased by 102.7% and 90.3%, respectively. Higher fat intake (% energy), and moderate and vigorous PA were significantly associated with overweight and obesity in final model (odds ratio [OR] = 1.01, 95% confidence interval [CI]: 1.00-1.02, P = 0.004; and OR = 0.99, 95% CI: 0.98-1.00, P = 0.036, respectively).</p><p><b>CONCLUSIONS</b>The prevalence of overweight and obesity among Chinese children and adolescents has increased between 1997 and 2009. Reducing fat intake and increasing PA may help obesity prevention.</p>

Proteomic analysis of peripheral blood mononuclear cells to identify potential markers of fibrosis in chronic hepatitis B / 中华肝脏病杂志

<p><b>OBJECTIVE</b>To identify non-invasive biomarkers for diagnosis and/or prognosis of liver fibrosis in chronic hepatitis B (CHB).</p><p><b>METHODS</b>Peripheral blood samples were obtained from 48 patients with CHB, including 24 with mild fibrosis (stage 1, S1) and 24 with severe fibrosis (stage 4, S4), and subjected to Ficoll density gradient centrifugation in order to obtain enriched samples of peripheral blood mononuclear cells (PBMCs).The PBMC proteomes of the two groups were assessed by first separating the total proteins by two-dimensional gel electrophoresis (2DE) and then identifying the differentially expressed proteins by liquid chromatography combined with tandem mass spectrometry (LCMS/MS).</p><p><b>RESULTS</b>The enriched PBMC samples from the S1 group and the S4 group had similar amounts of platelets [(19.268+/- 6.413) * 109/L and(19.480+/- 6.538) * 109/L, respectively); however, for both, the platelet amounts were 5 to 15-fold lower than that of the normal reference (100-300 *109/L). There was no significant difference found between the platelet amounts in the S1 patients and healthy controls (P=0.930). Twelve differentially expressed proteins were identified through 2DE-LC-MS/MS, including proteins such as moesin and NADH dehydrogenase [ubiquinone] iron-sulfur protein 3 that are involved in various biological processes like cell movement, cell adhesion, kinase signaling and transcription.</p><p><b>CONCLUSION</b>s The 12 proteins with differential expression in S1 and S4 patients with CHB and liver fibrosis may represent markers related to development and/or progression of liver fibrosis.</p>

Proteomic study on effect of tangcao pill on microsome CYP450 / 中国中药杂志

Tangcao pill is commonly applied in adjuvant and even alternative therapy for patients with AIDS. However, the herb contains complex ingredients, but with unknown effect against anti-HIV drug and unknown function. Because CYP450 emzyme is the main metabolic enzymes of the drug, it is of important significance to study the regulation of CYP450 enzymes before and after the combined administration of Tangcao pill and EFV. Proteomics, due to its high throughout and high sensitivity, has been widely applied in CYP450 enzyme study. In this paper, liver microsomes were separated through differential centrifugation. Their proteins were separated through SDS-PAGE. The three protein bands that CYP450 enzymes were located were cut and identified by liquid chromatography tandem mass spectrometry. Totally 16 CYP450 isoenzymes were identified. Furthermore, in order to make a quantitative analysis on the effect of tang herb on CYP450 emzyme, the multiple reaction monitoring (MRM) technology based on MS was adopted. The CYP2C11 was selected based on the results of the mass spectrum identification of proteins. The characteristic polypeptides were obtained through searching Expasy blast database. The m/z of the fragment ions was less than 800. In the paper, the m/z of ion pairs of CYP2C11 were 711.5/232.1, 711.5/319.2, 711.5/466.2 and 711.5/595.3, and the m/z of ESAT-6 (internal standard, IS) were 735.5/215.3, 735.5/389.3, 735.5/460.3 and 735.5/524.3. The relative peak (analyte/IS) area was adopted for the relative quantitative analysis. Compared with the EFV single administration group, the EFV and Tangcao pill combined administration group showed a 1.6-fold increase in CYP2C11. The results of the paper indicated that Tangcao pill may affect drug metabolism by regulating metabolic enzymes such as CYP2C11, but the specific mechanism still unknown.

Effects of maternal exposure to nano-alumina during pregnancy on neurodevelopment in offspring mice / 中华劳动卫生职业病杂志

<p><b>OBJECTIVE</b>To observe the effects of maternal exposure to nano-alumina during pregnancy on the neurodevelopment in offspring mice.</p><p><b>METHODS</b>Female ICR mice began to be exposed to nano-alumina 10 d before mating, and the nano-alumina exposure lasted till offspring mice were born. All the female mice were randomly divided into 5 groups: solvent control group (saline), nano-carbon group (11.76 mg/ml), micro-alumina group (50 mg/ml), 50 nm alumina group (50 mg/ml), and 13 nm alumina group (50 mg/ml). All the mice were treated by nasal drip (10 µl/time) 3 times daily till offspring mice were born. Physiological indices, reflex and sensory function test, endurance test, Morris water maze test, positioning and navigation test, and open field test were used to evaluate the neurodevelopment of newborn mice.</p><p><b>RESULTS</b>On day 28, the body weight of 13 nm alumina group (16.73±4.04 g) was significantly lower than that of solvent control group (20.45±2.50 g) (P<0.01); the 13 nm alumina group had significantly delayed time to ear opening compared with the solvent control group (4.91±0.78 d vs 4.45±0.50 d, P<0.01); compared with the solvent control group, the nano-carbon group, micro-alumina group, 50 nm alumina group, and 13 nm alumina group had significantly delayed time to eruption of teeth (10.05±0.23 d vs 10.32±0.48 d, 10.75±0.45 d, 10.32±0.47 d, and 10.79±0.49 d, P<0.05 or P<0.01). On days 4 and 7 after birth, compared with the solvent control group, other groups had significantly decreased proportions of mice which passed the cliff avoidance test (P < 0.05 or P < 0.01). On days 12 and 14 after birth, compared with the solvent control group, the nano-carbon group, 50 nm alumina group, and 13 nm alumina group had significantly reduced pre-suspension time in the endurance test (P < 0.05 or P < 0.01). The Morris water maze and positioning and navigation tests showed that the 13 nm alumina group had a significantly increased 5 d incubation period compared with the solvent control group (P < 0.05); compared with the solvent control group, other groups had significantly reduced numbers of platform crossings (P < 0.05 or P < 0.01). The open field test showed that the nano-carbon group and 13 nm alumina group had reduced numbers of rearings compared with the solvent control group (P < 0.05); compared with the solvent control group, other groups had significantly reduced numbers of modifications (P < 0.01).</p><p><b>CONCLUSION</b>Maternal exposure to nano-alumina (13 nm) during pregnancy has inhibitory effects on the physical development and early behavioral development in newborn mice and can also inhibit the learning and memory abilities and adaptability to new environment in offspring mice. The neurodevelopmental toxicity of nano-alumina to newborn mice increases as the particle sizes of nano-alumina decrease, which has been demonstrated by the endurance test and number of rearings.</p>

Plasma proteome analysis of chronic hepatitis B patients with different stages of liver fibrosis / 中华肝脏病杂志

<p><b>OBJECTIVE</b>To identify plasma biomarkers with specific relation to the various liver fibrosis stages that can be used to assess hepatitis B virus (HBV)-infected patients for non-invasive liver fibrosis and to evaluate the prognosis of the liver fibrosis.</p><p><b>METHODS</b>Plasma samples were collected from 80 HBV-positive patients at the Hepatitis Department of Shanghai Public Health Clinical Center between September 2008 and January 2011. The samples were grouped according to the patient's stage of hepatic fibrosis determined by liver biopsy: S0-1 (n = 40), S2-3 (n = 20), and S4 (n = 20). Each plasma sample was processed to remove the two most abundant proteins, albumin and immunoglobulin G (IgG), and then resolved by two-dimensional (2D) electrophoresis. ImageMaster 2D analysis software was used to identify differentially expressed proteins related to the liver fibrosis stages. After trypsin digestion, the differential proteins were identified by online reversed-phase nano-flow liquid chromatography coupled with electrospray ionization ion trap mass spectrometry (MS).</p><p><b>RESULTS</b>The patients in the three groups were not significantly different in age (range: 30-50 years; P = 0.053) or sex (x² = 0.155, P = 0.926). Low-abundance proteins were efficiently enriched by the albumin/IgG depletion method. Fourteen differentially expressed proteins were detected among the S0-1, S2-3 and S4 groups, all of which were identified by tandem MS and included fibrinogen gamma chain, haptoglobin, complement C3, Ig kappa chain C region, and apolipoprotein A-I.</p><p><b>CONCLUSION</b>Plasma proteomic analysis of chronic hepatitis B patients identified a panel of differentially expressed proteins related to different stages of liver fibrosis. These proteins may represent diagnostic and prognostic biomarkers of HBV-related hepatic fibrosis.</p>

Predisposing factors, diagnosis, treatment and prognosis of cerebral venous thrombosis during pregnancy and postpartum: a case-control study / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Previous investigations have demonstrated a relatively low incidence of stroke among young women, though both pregnancy and delivery can substantially increase the risk. Cerebral venous thrombosis may manifest different characteristics during pregnancy and postpartum as a result of their specific physiological statuses. This study aimed to identify the clinical manifestations, diagnosis, treatment, and prognosis of cerebral venous thrombosis during pregnancy and postpartum.</p><p><b>METHODS</b>We conducted a retrospective analysis of 22 patients with cerebral venous thrombosis who were assigned to either group A (during pregnancy) or group B (during postpartum). The relevant risk factors, initiation and development of the disease, clinical presentations, diagnosis, treatment, and prognosis were compared between the two stages.</p><p><b>RESULTS</b>Cerebral venous thrombosis occurred during both pregnancy and postpartum, but was more common postpartum. Patients in group A had a longer hospitalization period than those in group B. Confirmed predisposing factors in 85.7% of patients of group A were dehydration, infection, and underlying cerebrovascular disorders. No obvious predisposing factors were identified in group B. The most frequent symptom was headache, with epileptic seizures, hemiparalysis and aphasia being less frequent symptoms. Focal neurological symptoms (P = 0.022) and cerebral infarction (P = 0.014) occurred more frequently in group A than in group B. Anticoagulation therapy proved to be safe for cerebral venous thrombosis patients during puerperium, regardless of parenchymal hemorrhage. However, more attention should be paid to spontaneous in-site placental hemorrhage in pregnant patients. Both groups had similar prognoses (P = 1.000), with 36.3% patients suffering from consequential dysfunction or recurrent intracranial hypertension. Delayed diagnosis was associated with a poorer prognosis.</p><p><b>CONCLUSIONS</b>Cerebral venous thrombosis manifests different clinical characteristics during pregnancy and postpartum, though both have a good prognosis. Early diagnosis and prompt anticoagulation therapy are essential.</p>

Subcellular proteome analysis of immune or alcohol induced rat liver fibrosis / 中华肝脏病杂志

<p><b>OBJECTIVE</b>To study the mechanism of liver fibrogenesis and to find new non-invasive biomarkers.</p><p><b>METHOD</b>In this study, we used subcellular proteomic technology to study the plasma membrane proteins related to immune or alcohol induced liver fibrosis. Rat liver fibrosis models were induced by pig serum or alcohol injection. The liver fibrogenesis were detected by James's staining in the rat models after 2, 4, 6 and 8 weeks of treatment. The liver plasma membrane (PM) of the 2- and 8-week treatment model rats were enriched by two-step sucrose density gradient centrifugation. The purity of PM was verified by western blotting, and the plasma membrane proteins were extracted and analyzed by 2 DE. The differentially expressed proteins were identified by LC-MS/MS. Cellular location and function of these identified differential protein were classified.</p><p><b>RESULTS</b>Immune or alcohol induced liver fibrosis rat models were successfully established. Liver plasma membrane was significantly enriched after sucrose density ultracentrifugation treatment. 87 differential protein spots were find out by 2DE combined with LC-MS/MS from the liver plasma membrane proteins of the 2- and 8-week treatment rat models, which corresponded to 30 non-redundant proteins including annexin A2, keratin 8 and keratin 18.</p><p><b>CONCLUSIONS</b>A list of differentially expressed proteins relate to liver fibrosis were successfully identified. Differential proteins such as annexin A2, keratin 8 and keratin 18 could be new biomarkers for liver fibrosis diagnosis.</p>

Proteomic analysis of plasma membrane of HBV transgene mice livers / 中华肝脏病杂志

<p><b>OBJECTIVE</b>To study liver plasma membrane (PM) proteins affected by hepatitis B virus (HBV), and to study the molecular mechanism of HBV infection through plasma membrane proteome analysis of transgene mice livers.</p><p><b>METHODS</b>Plasma membrane was purified using second antibody superparamagnetic beads that combine subcellular fractionation and immunoisolation strategies. Western blot was used to verify the purification of plasma membrane and the expression of HBV envelope protein. The proteins from plasma membrane were extracted, quantified and separated by two-dimensional electrophoresis. The gels were stained by silver nitrate or Coomassie Blue and analyzed by Imagemaster software. The different expressed proteins were identified by matrix-assisted laser desorption/ionization time-of-flight/time-of-flight mass spectrometry (MALDI-TOF-TOF MS).</p><p><b>RESULTS</b>The plasma membrane of mice livers was enriched 3-fold and the contamination from mitochondria was reduced 2-fold in comparison with the density gradient centrifugation method. HBV envelope protein was found only in HBV transgene mice livers. More than 500 protein spots were separated in Coomassie Blue stained gels. Twenty-six proteins with two-fold differences were found through Imagemaster software analysis. Seven proteins were identified.</p><p><b>CONCLUSION</b>An optimized plasma membrane purification method was developed; protein profile of liver plasma membrane changed in the transgene mice livers; some proteins related to HBV infection were found, and this work may be helpful in the research of the molecular mechanism of HBV infection.</p>