Anemia,a global public health problem,has significant adverse consequences on the cognitive development of children and the work capacity of adults;affecting social and economic development.Globally,roughly 43%of chil...Anemia,a global public health problem,has significant adverse consequences on the cognitive development of children and the work capacity of adults;affecting social and economic development.Globally,roughly 43%of children under five years of age,38%of pregnant women,and 29%of nonpregnant women had anemia.Anemia during pregnancy significantly increases the risk of low birth weight and preterm birth.A 10 g/L increase in hemoglobin has been estimated to decrease the risk of maternal and perinatal mortality by 29%and 28%.展开更多
Objective To assess the effect of sodium iron ethylenediaminetetraacetate(Na Fe EDTA)-fortified soy sauce on anemia prevalence in the Chinese population. Methods A systematic review was performed to identify potential...Objective To assess the effect of sodium iron ethylenediaminetetraacetate(Na Fe EDTA)-fortified soy sauce on anemia prevalence in the Chinese population. Methods A systematic review was performed to identify potential studies by searching the electronic databases of Pub Med, Cochrane Library, WHO Library, High Wire, CNKI, and other sources. The selection criteria included randomized controlled trials that compared the efficacy of Na Fe EDTA-fortified soy sauce with that of non-fortified soy sauce. Anemia rates and hemoglobin levels were the outcomes of interest. Inclusion decisions, quality assessment, and data extraction were performed by two reviewers independently. A total of 16 studies met the inclusion criteria for anemia rate analysis, of which 12 studies met the inclusion criteria for hemoglobin analysis. All included studies assessed the effect of Na Fe EDTA-fortified soy sauce on anemia rates and hemoglobin concentrations. Results After the intervention, the hemoglobin concentration increased and anemia rates decreased significantly as compared with the non-fortified soy sauce groups. For anemia rates, data from 16 studies could be pooled, and the pooled estimate odds ratio was 0.25(95% CI 0.19-0.35). For hemoglobin concentrations, data from 12 studies could be pooled, and the pooled weighted mean difference was 8.81 g/L(95% CI 5.96-11.67). Conclusion Na Fe EDTA-fortified soy sauce has a positive effect on anemia control and prevention in the at-risk population.展开更多
Objective To establish and evaluate a protein microarray method for combined measurement of serum ferritin(SF) and soluble transferrin receptor(sTfR).Methods Microarrayer was used to print both anti-SF antibodies I an...Objective To establish and evaluate a protein microarray method for combined measurement of serum ferritin(SF) and soluble transferrin receptor(sTfR).Methods Microarrayer was used to print both anti-SF antibodies I and anti-sTfR antibodies I on each protein microarray.Anti-SF antibodies II and anti-sTfR antibodies II were used as detection antibodies and goat antibodies coupled to Cy3 were used as antibodies III.The detection conditions of the quantitative analysis method for simultaneous measurement of SF and sTfR with protein microarray were optimized and evaluated.The protein microarray was compared with commercially available traditional tests with 26 serum samples.Results By comparison experiment,mouse monoclonal antibodies were chosen as the probes and contact printing was chosen as the printing method.The concentrations of SF and sTfR probes were 0.5 mg/mL and 0.5 mg/mL respectively,while those of SF and sTfR detection antibodies were 5 μg/mL and 0.36 μg/mL respectively.Intra-and inter-assay variability was between 3.26% and 18.38% for all tests.The regression coefficients comparing protein microarray with traditional test assays were better than 0.81 for SF and sTfR.Conclusion The present study has established a protein microarray method for combined measurement of SF and sTfR.展开更多
Objective To research a protein chip method which can simultaneously quantitative detectβ‐Lactoglobulin(β‐L) and Lactoferrin(Lf) at one time.Methods Protein chip printer was used to print both anti‐β‐L antibodi...Objective To research a protein chip method which can simultaneously quantitative detectβ‐Lactoglobulin(β‐L) and Lactoferrin(Lf) at one time.Methods Protein chip printer was used to print both anti‐β‐L antibodies and anti‐Lf antibodies on each block of protein chip. And then an improved sandwich detection method was applied while the other two detecting antibodies for the two antigens were added in the block after they were mixed. The detection conditions of the quantitative detection for simultaneous measurement of β‐L and Lf with protein chip were optimized and evaluated. Based on these detected conditions, two standard curves of the two proteins were simultaneously established on one protein chip. Finally, the new detection method was evaluated by using the analysis of precision and accuracy.Results By comparison experiment, mouse monoclonal antibodies of the two antigens were chosen as the printing probe. The concentrations of β‐L and Lf probes were 0.5 mg/m L and 0.5 mg/m L,respectively, while the titers of detection antibodies both of β‐L and Lf were 1:2,000. Intra‐ and inter‐assay variability was between 4.88% and 38.33% for all tests. The regression coefficients of protein chip comparing with ELISA for β‐L and Lf were better than 0.734, and both of the two regression coefficients were statistically significant(r = 0.734, t = 2.644, P = 0.038; and r = 0.774, t = 2.998, P =0.024).Conclusion A protein chip method of simultaneously quantitative detection for β‐L and Lf has been established and this method is worthy in further application.展开更多
Objectives To evaluate the distribution by age and sex of serum high-sensitivity C-reactive protein(hsCRP)in an urban Chinese population and to provide a profile prediction for the risk of bacterial infection,inflamma...Objectives To evaluate the distribution by age and sex of serum high-sensitivity C-reactive protein(hsCRP)in an urban Chinese population and to provide a profile prediction for the risk of bacterial infection,inflammatory diseases,or tissue damages in the body.Methods Serum hsCRP was determined using the Roche Tina-quant immuno-turbidimetric assay on a Hitachi 7600–010 automatic biochemical analyzer(Roche Diagnostics)in 1,572 males and 1,800 females,including 78 pregnant women,who were derived from the National Health and Nutrition Survey in2010–2012.Results The average hsCRP concentration in urban China was 0.68 mg/L for males and 0.65 mg/L for females.Significant differences in hsCRP were found among different age groups(P<0.05).Monitoring results showed no significant differences among the 6–11,45–59,and≥60-year-old groups in the comparison of hsCRP between males and females in large cities.However,hsCRP concentration was significantly higher in men aged 12–17 and 18–44 years than in women.Conclusion The distribution of the hsCRP status of residents in large cities in China was influenced by age and gender,and the hsCRP levels of both sexes increased gradually with age.In addition,hsCRP concentration was higher in healthy pregnant women than in non-pregnant women.Basing on our results,we recommend that this parameter be included in future national and international screening for early detection of various illnesses.展开更多
Iron deficiency anemia(IDA)is one of the most important nutrition issues in China[1-2].Data from the2002 National Nutrition and Health Survey showed that the average anemia prevalence in China was20.1%and the prevalen...Iron deficiency anemia(IDA)is one of the most important nutrition issues in China[1-2].Data from the2002 National Nutrition and Health Survey showed that the average anemia prevalence in China was20.1%and the prevalence in women of child-bearing age and of children in some poor regions展开更多
Research on nutrigenomics has accumulated sufficient data in the past two decades that have dem on strated phe no types of single n ucleotide polymorphisms (SNPs) betwee n healthy and micronutrient-deficient populatio...Research on nutrigenomics has accumulated sufficient data in the past two decades that have dem on strated phe no types of single n ucleotide polymorphisms (SNPs) betwee n healthy and micronutrient-deficient populations. For instance, Zhang et al. showed that the genes MTHFR C677T, MTRR A66G, and MTR A2756G were the genetic factors resp on sible for low absorptio n and bioavailability of vitamins such as folate, B6/ and B12. It has also been reported that these nutrients are closely associated with the prevale nee of neural tube defects in newborn infants。展开更多
Objective This study optimizes three-dimensional(3D) culture conditions of HepG2 using response surface methodology(RSM) based on the VitroGel system to facilitate the cell model in vitro for liver tissues.Method HepG...Objective This study optimizes three-dimensional(3D) culture conditions of HepG2 using response surface methodology(RSM) based on the VitroGel system to facilitate the cell model in vitro for liver tissues.Method HepG2 cell was 3D cultured on the VitroGel system.Cell viability was detected using Cell Counting Kit-8(CCK-8) assay of HepG2 lived cell numbers.The proliferation of HepG2 cell and clustering performance was measured via fluorescence staining test.Albumin concentration in the culture medium supernatant as an index of HepG2 cell biological function was measured with ELISA kit.Independent factor tests were conducted with three key factors:inoculated cell concentration,cultured time,and dilution degree of the hydrogel.The preliminary results of independent factor tests were used to determine the levels of factors for RSM.Result The selected optimal culture conditions are as follows:concentration of inoculated cells was4.44 × 10^(5)/mL,culture time was 4.86 days,and hydrogel dilution degree was 1:2.23.The result shows that under optimal conditions,the predicted optical density(OD) value of cell viability was 3.10 and measured 2.978 with a relative error of 3.94%.Conclusion This study serves as a reference for the 3D HepG2 culture and constructs liver tissues in vitro.Additionally,it provides the foundation for repeated dose high-throughput toxicity studies and other scientific research work.展开更多
Triclosan(TCS)is widely used in personal-care products because of its bactericidal and antibacterial properties.However,TCS and its toxic byproducts have been detected in aquatic environments,animals,and plants worldw...Triclosan(TCS)is widely used in personal-care products because of its bactericidal and antibacterial properties.However,TCS and its toxic byproducts have been detected in aquatic environments,animals,and plants worldwide.TCS is a common phenolic environmental endocrine disruptor,and TCS in the environment enters the body mainly through diet and water.Most of the absorbed TCS is metabolized by the human kidneys and is eliminated in the urine[1].Some epidemiological studies have suggested a positive correlation between the TCS exposure level in urine and albumin(a biomarker of renal function),which could cause renal dysfunction[2].However,the potential effects of TCS on the mammalian kidney and its mechanisms are currently unknown.Consequently,we initiated an in vitro trial to study the molecular mechanism of cytotoxicity of TCS to glomeruli.展开更多
To explore interleukin-6(IL-6)production and characterize lipid accumulation in L02 hepatocytes induced by sodium oleate.L02 hepatocytes were incubated with 0,37.5,75,150,300,600,or 1,200μmol/L sodium oleate for 24 h...To explore interleukin-6(IL-6)production and characterize lipid accumulation in L02 hepatocytes induced by sodium oleate.L02 hepatocytes were incubated with 0,37.5,75,150,300,600,or 1,200μmol/L sodium oleate for 24 h,and the supernatant was collected to detect the concentration of IL-6.L02 hepatocytes were incubated with 300,150,75,or 0μmol/L sodium oleate for 0–24 h.The supernatant was collected for detection of IL-6 and free fatty acids.L02 hepatocytes treated with 300μmol/L sodium oleate for 0–24 h were stained with Oil Red O.With extended sodium oleate incubation time,IL-6 levels increased,and free fatty acids decreased.After 24 h incubation,IL-6 levels increased as sodium oleate increased from 37.5 to 300μmol/L(P<0.05 for 37.5μmol/L,P<0.01 for 75μmol/L and P<0.001 for concentrations 150μmol/L or higher).Lipid accumulation increased as the sodium oleate concentration and incubation time increased.Oil Red O staining intensified with incubation time extending beyond 2 h.IL-6 production and lipid accumulation in L02 hepatocytes are influenced by sodium oleate in a dose-and time-dependent manner.展开更多
基金funded by the National 13th 5-Year Key Research grant from the Ministry of Science and Technology of the People’s Republic of China[2018YFC1602105]National Institute for Nutrition and Health Chinese Center for Disease Control and Prevention。
文摘Anemia,a global public health problem,has significant adverse consequences on the cognitive development of children and the work capacity of adults;affecting social and economic development.Globally,roughly 43%of children under five years of age,38%of pregnant women,and 29%of nonpregnant women had anemia.Anemia during pregnancy significantly increases the risk of low birth weight and preterm birth.A 10 g/L increase in hemoglobin has been estimated to decrease the risk of maternal and perinatal mortality by 29%and 28%.
基金supported by National Special Fund for Health(No.201202012)
文摘Objective To assess the effect of sodium iron ethylenediaminetetraacetate(Na Fe EDTA)-fortified soy sauce on anemia prevalence in the Chinese population. Methods A systematic review was performed to identify potential studies by searching the electronic databases of Pub Med, Cochrane Library, WHO Library, High Wire, CNKI, and other sources. The selection criteria included randomized controlled trials that compared the efficacy of Na Fe EDTA-fortified soy sauce with that of non-fortified soy sauce. Anemia rates and hemoglobin levels were the outcomes of interest. Inclusion decisions, quality assessment, and data extraction were performed by two reviewers independently. A total of 16 studies met the inclusion criteria for anemia rate analysis, of which 12 studies met the inclusion criteria for hemoglobin analysis. All included studies assessed the effect of Na Fe EDTA-fortified soy sauce on anemia rates and hemoglobin concentrations. Results After the intervention, the hemoglobin concentration increased and anemia rates decreased significantly as compared with the non-fortified soy sauce groups. For anemia rates, data from 16 studies could be pooled, and the pooled estimate odds ratio was 0.25(95% CI 0.19-0.35). For hemoglobin concentrations, data from 12 studies could be pooled, and the pooled weighted mean difference was 8.81 g/L(95% CI 5.96-11.67). Conclusion Na Fe EDTA-fortified soy sauce has a positive effect on anemia control and prevention in the at-risk population.
基金funded by the 863 Program entitled as"The research and exploration of nutrition fortified food for improving growth and development(2010AA023004)"performed by the Trace Elements Nutrition Key Laboratory of the Ministry of Health
文摘Objective To establish and evaluate a protein microarray method for combined measurement of serum ferritin(SF) and soluble transferrin receptor(sTfR).Methods Microarrayer was used to print both anti-SF antibodies I and anti-sTfR antibodies I on each protein microarray.Anti-SF antibodies II and anti-sTfR antibodies II were used as detection antibodies and goat antibodies coupled to Cy3 were used as antibodies III.The detection conditions of the quantitative analysis method for simultaneous measurement of SF and sTfR with protein microarray were optimized and evaluated.The protein microarray was compared with commercially available traditional tests with 26 serum samples.Results By comparison experiment,mouse monoclonal antibodies were chosen as the probes and contact printing was chosen as the printing method.The concentrations of SF and sTfR probes were 0.5 mg/mL and 0.5 mg/mL respectively,while those of SF and sTfR detection antibodies were 5 μg/mL and 0.36 μg/mL respectively.Intra-and inter-assay variability was between 3.26% and 18.38% for all tests.The regression coefficients comparing protein microarray with traditional test assays were better than 0.81 for SF and sTfR.Conclusion The present study has established a protein microarray method for combined measurement of SF and sTfR.
基金Sponsored by the Young Scholar Scientific Research Foundation of China CDC[2015A202]:The establishment of testing platform of quantitatively detecting main protein of cow milk by using protein chip technique
文摘Objective To research a protein chip method which can simultaneously quantitative detectβ‐Lactoglobulin(β‐L) and Lactoferrin(Lf) at one time.Methods Protein chip printer was used to print both anti‐β‐L antibodies and anti‐Lf antibodies on each block of protein chip. And then an improved sandwich detection method was applied while the other two detecting antibodies for the two antigens were added in the block after they were mixed. The detection conditions of the quantitative detection for simultaneous measurement of β‐L and Lf with protein chip were optimized and evaluated. Based on these detected conditions, two standard curves of the two proteins were simultaneously established on one protein chip. Finally, the new detection method was evaluated by using the analysis of precision and accuracy.Results By comparison experiment, mouse monoclonal antibodies of the two antigens were chosen as the printing probe. The concentrations of β‐L and Lf probes were 0.5 mg/m L and 0.5 mg/m L,respectively, while the titers of detection antibodies both of β‐L and Lf were 1:2,000. Intra‐ and inter‐assay variability was between 4.88% and 38.33% for all tests. The regression coefficients of protein chip comparing with ELISA for β‐L and Lf were better than 0.734, and both of the two regression coefficients were statistically significant(r = 0.734, t = 2.644, P = 0.038; and r = 0.774, t = 2.998, P =0.024).Conclusion A protein chip method of simultaneously quantitative detection for β‐L and Lf has been established and this method is worthy in further application.
基金supported by the National Key Research and Develepment Program of China 2016YFD0400602。
文摘Objectives To evaluate the distribution by age and sex of serum high-sensitivity C-reactive protein(hsCRP)in an urban Chinese population and to provide a profile prediction for the risk of bacterial infection,inflammatory diseases,or tissue damages in the body.Methods Serum hsCRP was determined using the Roche Tina-quant immuno-turbidimetric assay on a Hitachi 7600–010 automatic biochemical analyzer(Roche Diagnostics)in 1,572 males and 1,800 females,including 78 pregnant women,who were derived from the National Health and Nutrition Survey in2010–2012.Results The average hsCRP concentration in urban China was 0.68 mg/L for males and 0.65 mg/L for females.Significant differences in hsCRP were found among different age groups(P<0.05).Monitoring results showed no significant differences among the 6–11,45–59,and≥60-year-old groups in the comparison of hsCRP between males and females in large cities.However,hsCRP concentration was significantly higher in men aged 12–17 and 18–44 years than in women.Conclusion The distribution of the hsCRP status of residents in large cities in China was influenced by age and gender,and the hsCRP levels of both sexes increased gradually with age.In addition,hsCRP concentration was higher in healthy pregnant women than in non-pregnant women.Basing on our results,we recommend that this parameter be included in future national and international screening for early detection of various illnesses.
基金supported by the Global Alliance for Improved Nutrition(Project No.NFA-CHN-FE-2003-01-00)
文摘Iron deficiency anemia(IDA)is one of the most important nutrition issues in China[1-2].Data from the2002 National Nutrition and Health Survey showed that the average anemia prevalence in China was20.1%and the prevalence in women of child-bearing age and of children in some poor regions
基金supported by Rural compulsory education student nutrition improvement plan-student nutrition and health condition in-depth monitoring and evaluation project [2016-019]
文摘Research on nutrigenomics has accumulated sufficient data in the past two decades that have dem on strated phe no types of single n ucleotide polymorphisms (SNPs) betwee n healthy and micronutrient-deficient populations. For instance, Zhang et al. showed that the genes MTHFR C677T, MTRR A66G, and MTR A2756G were the genetic factors resp on sible for low absorptio n and bioavailability of vitamins such as folate, B6/ and B12. It has also been reported that these nutrients are closely associated with the prevale nee of neural tube defects in newborn infants。
基金funded by Toxicity Evaluation of Key Contaminants in Health Food by Cell-based Test Models and the Mechanism Analysis [2018YFC1602104]
文摘Objective This study optimizes three-dimensional(3D) culture conditions of HepG2 using response surface methodology(RSM) based on the VitroGel system to facilitate the cell model in vitro for liver tissues.Method HepG2 cell was 3D cultured on the VitroGel system.Cell viability was detected using Cell Counting Kit-8(CCK-8) assay of HepG2 lived cell numbers.The proliferation of HepG2 cell and clustering performance was measured via fluorescence staining test.Albumin concentration in the culture medium supernatant as an index of HepG2 cell biological function was measured with ELISA kit.Independent factor tests were conducted with three key factors:inoculated cell concentration,cultured time,and dilution degree of the hydrogel.The preliminary results of independent factor tests were used to determine the levels of factors for RSM.Result The selected optimal culture conditions are as follows:concentration of inoculated cells was4.44 × 10^(5)/mL,culture time was 4.86 days,and hydrogel dilution degree was 1:2.23.The result shows that under optimal conditions,the predicted optical density(OD) value of cell viability was 3.10 and measured 2.978 with a relative error of 3.94%.Conclusion This study serves as a reference for the 3D HepG2 culture and constructs liver tissues in vitro.Additionally,it provides the foundation for repeated dose high-throughput toxicity studies and other scientific research work.
基金supported by the National 13th 5-Year Key Research grant from the Ministry of Science and Technology of the People’s Republic of China[2018YFC1602104]performed under the project"Toxicity Evaluation of Key Contaminants in Health Food by Cell-based Test Models and the Mechanism Analysis"
文摘Triclosan(TCS)is widely used in personal-care products because of its bactericidal and antibacterial properties.However,TCS and its toxic byproducts have been detected in aquatic environments,animals,and plants worldwide.TCS is a common phenolic environmental endocrine disruptor,and TCS in the environment enters the body mainly through diet and water.Most of the absorbed TCS is metabolized by the human kidneys and is eliminated in the urine[1].Some epidemiological studies have suggested a positive correlation between the TCS exposure level in urine and albumin(a biomarker of renal function),which could cause renal dysfunction[2].However,the potential effects of TCS on the mammalian kidney and its mechanisms are currently unknown.Consequently,we initiated an in vitro trial to study the molecular mechanism of cytotoxicity of TCS to glomeruli.
基金Toxicity Evaluation of Key Contaminants in Health Food by Cell-based Test Models and the Mechanism Analysis[2018YFC1602104]。
文摘To explore interleukin-6(IL-6)production and characterize lipid accumulation in L02 hepatocytes induced by sodium oleate.L02 hepatocytes were incubated with 0,37.5,75,150,300,600,or 1,200μmol/L sodium oleate for 24 h,and the supernatant was collected to detect the concentration of IL-6.L02 hepatocytes were incubated with 300,150,75,or 0μmol/L sodium oleate for 0–24 h.The supernatant was collected for detection of IL-6 and free fatty acids.L02 hepatocytes treated with 300μmol/L sodium oleate for 0–24 h were stained with Oil Red O.With extended sodium oleate incubation time,IL-6 levels increased,and free fatty acids decreased.After 24 h incubation,IL-6 levels increased as sodium oleate increased from 37.5 to 300μmol/L(P<0.05 for 37.5μmol/L,P<0.01 for 75μmol/L and P<0.001 for concentrations 150μmol/L or higher).Lipid accumulation increased as the sodium oleate concentration and incubation time increased.Oil Red O staining intensified with incubation time extending beyond 2 h.IL-6 production and lipid accumulation in L02 hepatocytes are influenced by sodium oleate in a dose-and time-dependent manner.
