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Next-generation sequencing (NGS), also known as high-throughput sequencing, is more efficient compared with Sanger sequencing that has become the standard method of clinical DNA sequencing, and can obtain a large amount of information in a relatively short time at a lower cost.NGS has broad prospects in such aspects as diagnosing the pathogen of lower respiratory tract infection in children, identifying the pathogen of cross-infection in hospital, drug resistance research and vaccine development.It is still worth conducting further studies on the approach to improve the specificity and sensitivity of diagnosis and to optimize NGS.
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Objective@#To investigate the prospective effects of the consumption of protein and animal foods before menarche on the age at menarche among Chinese girls.@*Methods@#This paper was based on the data collected in the China Health and Nutrition Survey(CHNS) from 1997 to 2015. A total of 683 girls aged 6 and over who had completed information on age at menarche, height, weight, per capita annual household income, maternal education level and participated in at least one complete dietary survey within 1 to 4 years before menarche were included. Urban-rural stratified multivariable linear regression model was used to examine the effects of protein and animal foods intake before menarche on Chinese girls age at menarche in urban and rural areas.@*Results@#After adjusted for total energy intake, body mass index standard deviation score and per capita annual household income, the consumption of meat before menarche was negatively associated with the age at menarche among rural Chinese girls(B=-0.003, P=0.00), but not among urban Chinese girls(B=0.002, P>0.05). Total protein, dairy, eggs and aquatic products intake before menarche were not associated with Chinese girls age at menarche in urban and rural areas(B=0.002, -0.001, 0.003, 0.000; 0.001, 0.001, -0.001, -0.003, P>0.05).@*Conclusion@#Higher intake of meat before menarche might lead to earlier menarche onset in rural Chinese girls. The consumption of total protein, dairy, eggs, and aquatic products before menarche did not affect the age at menarche in Chinese girls.
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Basophils have been neglected for a long time as an immune cell.Recently, it gained respect because of its important role in helper T lymphocytes(Th)2 immune response.Basophils are involved in the pathogenesis of bronchial asthma through a variety of possible mechanisms.Basophils can act as initiators initiate and establish Th2 immune response by interacting with dendritic cells; basophils can act as immune regulators, regulate immune cell functions such as type 2 innate lymphoid cells by secreting cytokines such as interleukin 4 to consolidate allergic inflammation; basophils can also act as immune effectors participate in allergic airway inflammation through IgE-depended and non IgE-depended activation.In addition, clinical research is focused on the usage of basophil activation status as possible biomarker in predicting the outcome of allergic disease therapy, which is of great clinic value in individualized management of asthma.
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Family physicians on contract for rural families play an important role in primary medical and health services. This research raises for the first time the practical function and position of rural family physicians on contract. On this basis, a theoretical competency model of rural family physicians was constructed by referring to McClelland′s competency dictionary, relevant policy documents in China and literatures at hand. The model included six level-1 dimension indicators: achievement, management, service, cognition, influence, and self-efficacy, as well as 17 level-2 dimension indicators. At the same time, the paper explained in detail these indicators and compared them with the international indicators of family physicians, highlighting the working characteristics and practical needs of family physicians on contract in rural China.
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Objective@#To examine the association of pre-pregnancy body mass and weight gain during pregnancy with macrosomia. @*Methods@#From January 2015 to December 2015, a total of 20 477 pregnant women were recruited by probabilistic proportional scale sampling with simple randomization in Sichuan, Yunnan and Guizhou Provinces. Basic information of pregnant women, weight gain during pregnancy and weight of newborn were collected. A multiple logistic regression model was used to assess the association between the pre-pregnancy body mass and gestational weight gain indicators with macrosomia. @*Results@#20 321 mother-infant were included in the final analysis. 20 321 pregnant women were (30.09±4.10) years old and delivered at (39.20±1.29) weeks, among which 12 341 (60.73%) cases were cesarean delivery. The birth weight of 20 321 infants were (3 292.26±431.67) grams, and 970 (4.77%) were macrosomia. The multiple logistic regression model showed that after adjusting for the age of women, compared to the normal weight group in the pre-pregnancy, the overweight and obesity group elevated the risk of macrosomia, with OR (95%CI) about 1.99 (95%CI: 1.69−2.35) and 4.05 (95%CI: 3.05−5.39), respectively. After adjusting for the age, the pre-pregnancy BMI, delivery weeks, delivery mode and infant′s gender, compared to the weight-gain appropriate group, higher weight gain rate in the mid-pregnancy and excessive total gestational weight gain elevated the risk of macrosomia, with OR (95%CI) about 1.99 (95%CI: 1.66−2.39) and 1.80 (95%CI: 1.55−2.08), respectively. @*Conclusion@#The overweight before pregnancy, obesity before pregnancy, the rate of weight gain in the second trimester and the high total weight gain during pregnancy could increase the risk of macrosomia.
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Epstein-Barr virus (EBV) is a common viral pathogen in children.EBV infection can cause childhood tumors, immune-related diseases and respiratory-related diseases.The proportion of EBV infection in Chinese children is high and the age of primary infection is early.Its pathogenesis is closely related to B lymphocytes, natural killer cells and gene defects.Clinical EBV infection is not only associated with childhood tumors and immune-related diseases, but also causes respiratory-related diseases that deserve more attention.
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Epstein-Barr virus (EBV) is a common viral pathogen in children.EBV infection can cause childhood tumors,immune-related diseases and respiratory-related diseases.The proportion of EBV infection in Chinese children is high and the age of primary infection is early.Its pathogenesis is closely related to B lymphocytes,natural killer cells and gene defects.Clinical EBV infection is not only associated with childhood tumors and immune-related diseases,but also causes respiratory-related diseases that deserve more attention.
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Objective To explore the effects of both pre-gestational BMI and gestational weight gain (GWG) on the birth weight of neonates.Methods A total of 5 395 pregnant women were selected from the Southwest areas of China (Sichuan/Yunnan/Guizhou) and were divided into groups as pre-gestational underweight,normal weight,overweight and obesity,according to the WHO Recommendation on BMI Classification.Guidelines on Pregnancy weight were adopted from the Institute of Medicine to confirm the accuracy of GWG.Multinomial logistic regression model was used to assess the associations between pregestational BMI and GWG,on the birth weight of the neonates.Results After adjusting for related confounders,low pre-gestational BMI appeared as a risk factor for SGA (OR=1.91,95％CI:1.47-2.50),and was also associated with the decreased risk of LGA (OR=0.55,95％CI:0.47-0.66).Inadequate GWG was both associated with the increased risk of delivering SGA (OR=1.57,95％CI:1.21-2.03) and the decreased risk of LGA (OR=0.48,95％CI:0.41-0.57).Pre-gestational overweight/obesity (OR=1.85,95％CI:1.58-2.17) and excessive GWG (OR=1.87,95％CI:1.67-2.11) were both positively associated with the risks on LGA.Data from the stratified analysis indicated that inadequate GWG was positively associated with the risk of SGA among underweight or normal weight women (all P＜0.05),but not with those overweight/obese women.Conclusions Pre-gestational BMI and GWG were important influencing factors on the birth weight of neonates.Health education programs for pregnant women should be intensified and gestational weight gain should also be reasonably under control.
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Objective To explore the effects of both pre-gestational BMI and gestational weight gain (GWG) on the birth weight of neonates.Methods A total of 5 395 pregnant women were selected from the Southwest areas of China (Sichuan/Yunnan/Guizhou) and were divided into groups as pre-gestational underweight,normal weight,overweight and obesity,according to the WHO Recommendation on BMI Classification.Guidelines on Pregnancy weight were adopted from the Institute of Medicine to confirm the accuracy of GWG.Multinomial logistic regression model was used to assess the associations between pregestational BMI and GWG,on the birth weight of the neonates.Results After adjusting for related confounders,low pre-gestational BMI appeared as a risk factor for SGA (OR=1.91,95％CI:1.47-2.50),and was also associated with the decreased risk of LGA (OR=0.55,95％CI:0.47-0.66).Inadequate GWG was both associated with the increased risk of delivering SGA (OR=1.57,95％CI:1.21-2.03) and the decreased risk of LGA (OR=0.48,95％CI:0.41-0.57).Pre-gestational overweight/obesity (OR=1.85,95％CI:1.58-2.17) and excessive GWG (OR=1.87,95％CI:1.67-2.11) were both positively associated with the risks on LGA.Data from the stratified analysis indicated that inadequate GWG was positively associated with the risk of SGA among underweight or normal weight women (all P＜0.05),but not with those overweight/obese women.Conclusions Pre-gestational BMI and GWG were important influencing factors on the birth weight of neonates.Health education programs for pregnant women should be intensified and gestational weight gain should also be reasonably under control.
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<p><b>OBJECTIVE</b>To observe the effect of crocetin on autophagy in rat hepatocytes exposed to lipopolysaccharide (LPS) and D-galactosamine (D-gal) and explore the mechanism.</p><p><b>METHODS</b>Cultured rat hepatocytes were exposed to LPS (1 mg/L) and Dgal (60 mg/L) to induce cell injury and treated with crocetin, 3MA, or crocetin+3MA. Twelve hours after the treatments, the cells were examined for levels of ALT, AST and LDH in the supernatant using ELISA. LC3 fluorescence in the cells following immunofluorescence staining was observed using fluorescence microscopy. Autophagosomes in the cells were observed by transmission electron microscopy, and the cellular expressions of LC3, p62 and SIRT1 were detected using Western blotting.</p><p><b>RESULTS</b>The levels of ALT, AST and LDH in the hepatocytes were elevated after LPS- and D-gal-induced injury, reached the highest levels after 3MA treatment, but were decreased significantly by crocetin treatment. LC3 fluorescence increased obviously in the injured hepatoctyes, and the increment was the most obvious in crocetin-treated cells; LC3 fluorescence was decreased significantly after 3MA treatment. Cell injury induced obvious increase in autophagy in the hepatocytes, and the number of autophagosomes increased significantly after crocetin treatment but was reduced significantly after 3MA treatment. The cell injury caused an obvious up-regulation of LC3 and SIRT1 expression and down-regulated p62 expression. LC3 and SIRT1 expression levels were the highest and the expression of p62 was the lowest in cells with crocetin treatment. 3MA treatment significantly reduced the expression of LC3 and SIRT1 and increased the expression of p62 in the injured cells.</p><p><b>CONCLUSIONS</b>Autophagy is increased in injured rat hepatocytes, and crocetin can promote autophagy in the injured cells to reduce further cell injury.</p>