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1.
Article in Chinese | WPRIM | ID: wpr-921707

ABSTRACT

The indirect competitive enzyme-linked immunosorbent assay(ic-ELISA) and direct competitive enzyme-linked immunosorbent assay(dc-ELISA) were performed for the rapid detection of aflatoxin B_1(AFB_1) in Astragali Radix, Zingiberis Rhizoma Recens, Jujubae Fructus, and Nelumbinis Semen with self-made antigens and antibodies. Different extraction methods were investigated to reduce the matrix effects of different medicinal parts in Chinese herbal medicines. The sensitivity of dc-ELISA method was improved by optimizing the molar ratio of AFB_1 to horseradish peroxidase(HRP). In this study, the sensitivity(IC_(50)) of ic-ELISA and dc-ELISA was 0.046 and 0.023 ng·mL~(-1), with the limit of detection(LOD) of 0.007 and 0.004 ng·mL~(-1), respectively. The detection time was 3 h and 50 min for ic-ELISA and dc-ELISA, respectively. The recovery rates were within the range of 62.96%-104.4%, with RSDs of less than 10%. Confirmed by LC-MS/MS, three positive samples of Nelumbinis Semen were detected from 53 samples. Two ELISA methods established in this study were accurate, rapid and sensitive, and can be used for rapid screening of AFB_1 in Chinese herbal medicines such as Astragali Radix, Zingiberis Rhizoma Recens, Jujubae Fructus, and Nelumbinis Semen. In addition, the advantages and limitations of the two methods were compared and discussed, which can provide a reference for the testing institutions to choose the proper method.


Subject(s)
Aflatoxin B1/analysis , China , Chromatography, Liquid , Enzyme-Linked Immunosorbent Assay , Tandem Mass Spectrometry
2.
Article in Chinese | WPRIM | ID: wpr-908355

ABSTRACT

Objective:To summarize the genetic etiology, clinical characteristics and outcomes of neonatal hypotonia in the early stage of NICU, to provide basis for clinicians to early identify diseases and choose reasonable treatments.Methods:The clinical data of neonates with hypotonia admitted to the Department of Neonatology of Children′s Hospital of Xinjiang Uygur Autonomous Region and People′s Hospital of Xinjiang Uygur Autonomous Region from July 2017 to July 2020 were analyzed.Results:A total of 49 children were enrolled in the study, all clinically manifested as unexplained hypotonia, accompanied by special appearance 29 cases(59.18%), metabolic abnormality 18 cases(36.73%), and cranial imagin abnormality 23 cases(46.93%). After gene sequencing a, total of 22(44.89%)patients were confirmed.Thirteen (26.53%) of them were copy number variation, and gene mutation in nine cases(18.36%). The oldest age of these patients was 3 years and 2 months now, while the youngest was 4 months.A total of 16 patients were dead(32.65%). Four (8.16%) patients were lost to follow-up.At present, eighteen (62.07%) patients had mental retardation, and eleven (37.93%) of whom still existed severe physical retardation.Conclusion:We could conduct genetic testing in NICU to improve the diagnosis rate of neonates with unexplained hypotonia, which have high rate of adverse events.Neonates with a clear diagnosis should be treated promptly and give the genetic counseling to reduce the risk for the next children.

3.
Article in Chinese | WPRIM | ID: wpr-906189

ABSTRACT

Objective:To explore the potential targets and related mechanism involved in the paclitaxel resistance to ovarian cancer. Method:Ovarian cancer A2780 cells and A2780 paclitaxel-resistant cells (A2780/T) were treated by 2, 4, 8, 16, 32, 64, 128, 256 μmol·L<sup>-1</sup> paclitaxel (PTX) for 24 h or 48 h respectively <italic>in vitro</italic>. The proliferation rate of A2780 cells and A2780/T cells treated with paclitaxel was determined by methyl thiazolyl tetrazolium (MTT) colorimetric method assay. A2780 and A2780/T cells were analyzed by LC-MS/MS Label-Free quantitative proteomics to identify and screen differentially expressed proteins in the two groups of cells. Gene ontology (GO) annotation and Kyoto encyclopedia of genes and genomes (KEGG) pathway analysis were used to determine the potential biomarkers of paclitaxel resistance in ovarian cancer. Conventionally cultured A2780 cells were used as a control group, and A2780/T cells were treated with 0, 1, 4 μmol·L<sup>-1</sup> PTX. Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR) and Western blot methods were used to detect and verify the mRNA and protein expression levels of potential target transforming growth factor-<italic>β</italic>-activated kinase 1 binding protein 1 (TAB1) and its downstream related molecules transforming growth factor-<italic>β</italic>-activated kinase (TAK1) and p38. Result:After PTX treatment for 24 h and 48 h, the cell viability of A2780 and A2780/T cells decreased. The inhibitory rate of PTX on A2780 cells was significantly higher than that of A2780/T cells. In A2780 cells, the IC<sub>50</sub> of PTX treatment for 48 h was 0.002 μmol·L<sup>-1</sup>, while in A2780/T cells, the IC<sub>50 </sub>of PTX was greater than the maximum concentration of 128 μmol·L<sup>-1</sup>, indicating that A2780/T cells were resistant to PTX compared with A2780 cells. 441 differentially expressed proteins and 421 special differentially expressed proteins between A2780/T and A2780 cells were screened by label-free quantitative proteomic analysis. GO function enrichment analysis showed that the binding proteins accounted for the majority (80%) among the differentially expressed proteins. According to the results of KEGG pathway analysis and expression site analysis, TAB1 might be a potential biomarker in paclitaxel-resistant ovarian cancer. Compared with A2780 cells, mRNA and protein expression levels of TAB1 in A2780/T cells were significantly reduced (<italic>P</italic><0.01). mRNA expression of TAK1 and p38 that interacted with TAB1 were also significantly reduced (<italic>P</italic><0.05, <italic>P</italic><0.01), while there was no significant change in protein expression. Conclusion:TAB1 may be a potential biomarker of paclitaxel resistance to ovarian cancer , and its mechanism may be related to the TAB1/TAK1/p38 MAPK pathway.

4.
Acta Pharmaceutica Sinica ; (12): 274-282, 2021.
Article in Chinese | WPRIM | ID: wpr-872620

ABSTRACT

Seventy-nine injectable herb extractions have been approved by the Chinese Food and Drug Administration (CFDA) and are frequently administered intravenously for various diseases. Unfortunately, herb-drug interactions are under-investigated and sometimes overlooked in the clinic. In the present investigation the in vitro inhibition of 9 drug metabolizing enzymes including CYP1A, CYP2A6, CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP2D6, CYP2E1, and CYP3A was assessed using an appropriate probe substrate for each enzyme with human liver microsomes. Metabolite formation was quantified using a validated and sensitive high-performance liquid chromatography-tandem mass spectrometry (LC-MS/MS) assay. The IC50 of each herb extract was estimated using a concentration range from 5% to 0.5%, and the time-dependent inhibition of the nine CYP450 isoenzymes was also determined. Of the 79 approved iv herb injectables, 37 inhibited CYP1A, 24 inhibited CYP2A6, 41 inhibited CYP2B6, 36 inhibited CYP2C8, 31 inhibited CYP2C9, 41 inhibited CYP2C19, 13 inhibited CYP2D6, 25 inhibited CYP2E1, and 42 inhibited CYP3A with 50% or greater inhibition at a test concentration of 5% (v/v). IC50 differences were noted between pre-incubation or co-incubation assays with HLM for 30 min, with the time-dependent inhibitory (TDI) effects were observed with 2 injectables on CYP1A, 5 injectables on CYP2A6, 5 injectables on CYP2B6, 6 injectables on CYP2C8, 1 injectable on CYP2D6 and 6 injectables on CYP3A. Collectively, the results demonstrate that potential herb-drug interactions (HDIs) can occur with the concomitant use of herb injectables and prescription drugs that are cleared by CYP450 enzymes, and further investigation is warrant for the clinical relevance of these interactions.

5.
Chinese Journal of School Health ; (12): 1047-1051, 2021.
Article in Chinese | WPRIM | ID: wpr-886321

ABSTRACT

Objective@#To explore the relationship between daily physical activity and sleep quality among college students during COVID-19 epidemic, so as to provide scientific basis for improving physical health and sleep of college students.@*Methods@#A stratified random sampling method was used to select a total of 2 808 college students from two universities (one in each of sports and non sports categories) in Beijing, Tianjin, and Wuhan in March 2020. The Pittsburgh Sleep Quality Index scale and the Bouchard Physical Activity Diary were used to collect sleep status and sleep duration (SD), sedentary behavior (SED), low intensity physical activity (LPA), and moderate to vigorous physical activity (MVPA). The Mann Whitney U test or Kruskal Wallis test was used to analyze the variability of parameters among college students. Multiple Logistic regression was used to analyze the relationship between physical activity and sleep quality.@*Results@#During the epidemic, male students had higher MVPA times(0.5 h) than female students(0 h) ( Z =-4.21, P <0.01); students aged 18 and younger had higher SED times(11.1 h) than students aged 19 to 21 and older(9.3,10.3 h) ( F =7.90, P <0.05). The SED was higher for students living in urban, combined urban rural areas(10.5,9.5 h) than for their rural counterparts(9.5 h) ( F =9.56, 10.73, P <0.01). Sport majors had higher LPA and MVPA times(3.9, 1.0 h) than non sports majors(3.0,0 h) ( Z =-2.99, -4.73, P <0.01), and lower SED and sleep times(8.3,9.8 h) than non sports majors(11.1,11.1 h) ( Z =-4.73, -2.42, P <0.01). The LPA time of students with general sleep quality and sleep disorder was lower than that of students with good sleep quality ( F =7.67, P <0.05), and SED time was higher than that of students with good sleep quality ( F =8.62, P <0.05). After controlling for gender, age, place of residence, and specialty, multiple Logistic regression analysis showed that LPA time deficit was a risk factor for sleep quality ( OR =0.84, 95% CI =0.71-0.99, P <0.05).@*Conclusion@#During the COVID-19 epidemic period, college students generally suffer from excessive sedentary time and insufficient physical activity, which vary in sex, region and specialty. The overall sleep quality of students is not optimistic, and the lack of low intensity physical activity may increase the risk of sleep disorders.

6.
Article in Chinese | WPRIM | ID: wpr-883103

ABSTRACT

Objective:To explore the application effect of medical science competition in nursing interns whocontribute to "healthy China" , and to improve their health education awareness, ability, method and self-confidence.Methods:A total of 205 nursing interns who worked in Union Hospital of Tongji Medical College of Huazhong University of Science and Technology from 2019 to 2020 were selected as the research objects. They were divided into the control group (105 cases) and the experimental group (100 cases) according to whether they participated in the medical science competition. The control group learned the form and method of health education in clinical rotation according to the traditional practice teaching plan. The experimental group volunteered to participate in the medical science competition, which required the dissemination of health knowledge through various forms. Before and after the competition, the health education ability assessment scale was used for comparison.Results:Before the medical science competition, there was no significant difference in the total score of assessment, planning, implementation, evaluation and health education between the control group and the experimental group ( t values were 0.765 - 1.749, all P>0.05). After the medical science competition, the total scores of assessment, planning, implementation, evaluation and health education ability of nursing interns in the experimental group were (24.38 ± 4.72), (17.98 ± 3.98), (25.16 ± 5.36), (12.57 ± 2.96) and (80.09 ± 15.65) respectively, while those in the control group were (22.45 ± 6.29), (16.61 ± 4.77), (23.04 ± 6.55), (11.31 ± 3.46) and (73.41 ± 19.69).The differences between the two groups were statistically significant ( t values were 2.226 - 2.795, all P<0.05). Conclusions:The medical science competition can improve the health education ability of assessment, planning, implementation, evaluation of nursing interns and contribute to "healthy China" .

7.
Article in Chinese | WPRIM | ID: wpr-888009

ABSTRACT

Eucommiae Cortex is an authentic medicinal material with broad growing areas( such as Hunan and Sichuan provinces in China. It is well-known for its efficacy in tonifying liver and kidney,strengthening muscles and bones,and stabilizing fetus. It has also been proven in pharmacology to possess the functions such as lowering blood pressure and lipids. Hence,Eucommiae Cortex has attracted increasing attention. The current quality standards of Eucommiae Cortex vary in different countries or regions. The quality of Eucommiae Cortex products on the market is affected by mix-ups of non-medicinal parts and insufficient growth years. In view of these problems,this paper summarizes the current quality standards and research progress of Eucommiae Cortex in China and overseas,aiming to provide a reference for the establishment of the quality standards of Eucommiae Cortex.


Subject(s)
China , Drugs, Chinese Herbal , Eucommiaceae , Humans , Reference Standards
8.
Article in Chinese | WPRIM | ID: wpr-781770

ABSTRACT

OBJECTIVE@#To explore the epidemiologic characteristics of acupuncturists who are sensitive to stimulation of moxa smoke, which could provide further direction for safety protection of exerting moxibustion and to further verify the feasibility of internet survey.@*METHODS@#A self-made questionnaire regarding body response to moxa smoke was established, which was used to conduct a face-to-face survey among acupuncturists who had performed long-term moxibustion. The Logistic regression model was used to analyze the factors affecting the stimulation response of acupuncturists and the epidemiological characteristics of acupuncturists was obtained.@*RESULTS@#A total of 733 valid data was obtained. The multivariate Logistic regression analysis showed that the history of chronic respiratory disease was the main risk factor of stimulus response including cough, phlegm in the throat, asthma, dyspnea, shortness of breath and nasal dryness after exposure to moxa smoke (<0.05, <0.01). The risk of stimulus response such as cough, tearing and nasal dryness was higher in women than in men (<0.05, <0.01). The risk of dry eyes and eyes pain in smokers was higher than those in non-smokers (<0.05). The risk of shortness of breath in those who were exposed to second-hand smoke was higher than those who were not exposed to second-hand smoke (<0.05). The analysis of index trend line showed that the results of internet survey were similar to those of face-to-face survey.@*CONCLUSION@#The stimulus response of acupuncturist after long-term exposure to moxa smoke is related to the history of chronic respiratory disease, being female, smoking or exposure of second-hand smoke, therefore more attention should be paid to those populations. In addition, the internet survey can be used for the epidemiological investigation of safety of moxa smoke.


Subject(s)
Cough , Female , Humans , Male , Moxibustion , Mucus , Smoke , Surveys and Questionnaires
9.
Article in Chinese | WPRIM | ID: wpr-864476

ABSTRACT

Objective:To explore the relationship between work-family support, psychological capital and presenteeism, and to explore the mediating role of psychological capital in work-family support and presenteeism.Methods:A total of 499 nursing staff from the top three hospitals were surveyed using the Work-Family Support Scale, the Nurses' Psychological Capital Scale and the Stanford Presenteeism Scale. Using AMOS.21 to build a mediating effect model, the non-parametric percentile Bootstrap method of bias correction was used to test the mediating effect of psychological capital in the process of work-family support affecting presenteeism.Results:Work-family support was significantly negatively correlated with presenteeism ( r value was -0.342, P <0.01). Work-family support was significantly positively correlated with psychological capital ( r value was 0.565, P<0.01), psychological capital and presenteeism was significantly negatively correlated ( r value was -0.364, P<0.01). Psychological capital played an intermediary role between work-family support and presenteeism, and mediation effect value accounted for 71.4% of the total effect. Conclusions:Nursing managers need to increase the psychological capital of nurses in order to reduce the loss of presenteesim, so as to enhance the intervention effect of work-family support on presenteesim.

10.
Article in Chinese | WPRIM | ID: wpr-828035

ABSTRACT

This study aims to establish a quantitative method of 4 aristolochic acids-DNA adducts in mice kidney and liver based on high performance liquid chromatography-tandem mass spectrometry(HPLC-MS/MS) for monitoring the content changes of aristolochic acids-DNA adducts. A Shiseido Capcellpak AQ C_(18) column(3 mm×100 mm, 3 μm) was used, with a mixture of 0.2% acetic acid-5 mmol·L~(-1) ammonium acetate as the aqueous phase and methanol as the organic phase for gradient elution. The multiple reaction monitoring(MRM) scanning method under positive mode by electrospray ionization(ESI) was performed for the detection of the aristolochic acids-DNA adducts which formed by combining aristolochic acid Ⅰ/Ⅱ with deoxyadenosine, deoxyguanosine, and deoxycytidine, respectively. Balb/c mice were given Guanmutong extract by gavage, and the relative content of aristolochic acids-DNA adducts in liver and kidney samples were analyzed within 60 days. It was found that the concentration of 4 aristolochic acids-DNA adducts in the kidney was significantly higher than that in the liver, and there were about 15.87 adducts in per 1×10~6 normal deoxynucleosides, which was 4.5-7.5 times than that of the liver. What's more, some adducts can still be detected on the 30 th day after administration. The concentration of the adducts in the liver was highest on the first day after administration, and a second peak appeared during the 7 th to 14 th days. The results indicated that aristolochic acids-DNA adducts are difficult to eliminate in vivo, and it is of great significance to study the mechanism of liver and kidney injury of aristolochic acid.


Subject(s)
Animals , Aristolochic Acids , Chromatography, High Pressure Liquid , DNA Adducts , Liver , Mice , Spectrometry, Mass, Electrospray Ionization , Tandem Mass Spectrometry
11.
Article in English | WPRIM | ID: wpr-827790

ABSTRACT

This study engineered β-carotene ketolase CrtW and β-carotene hydroxylase CrtZ to improve biosynthesis of astaxanthin in Escherichia coli. Firstly, crtW was randomly mutated to increase CrtW activities on conversion from β-carotene to astaxanthin. A crtW* mutant with A6T, T105A and L239M mutations has improved 5.35-fold astaxanthin production compared with the wild-type control. Secondly, the expression levels of crtW* and crtZ on chromosomal were balanced by simultaneous modulation RBS regions of their genes using RBS library. The strain RBS54 selected from RBS library, directed the pathway exclusively towards the desired product astaxanthin as predominant carotenoid (99%). Lastly, the number of chromosomal copies of the balanced crtW-crtZ cassette from RBS54 was increased using a Cre-loxP based technique, and a strain with 30 copies of the crtW*-crtZ cassette was selected. This final strain DL-A008 had a 9.8-fold increase of astaxanthin production compared with the wild-type control. Fed-batch fermentation showed that DL-A008 produced astaxanthin as predominant carotenoid (99%) with a specific titer of 0.88 g·L without addition of inducer. In conclusion, through constructing crtW mutation, balancing the expression levels between crtW* and crtZ, and increasing the copy number of the balanced crtW*-crtZ cassette, the activities of β-carotene ketolase and β-carotene hydroxylase were improved for conversion of β-carotene to astaxanthin with higher efficiency. The series of conventional and novel metabolic engineering strategies were designed and applied to construct the astaxanthin hetero-producer strain of E. coli, possibly offering a general approach for the construction of stable hetero-producer strains for other natural products.

12.
Chinese Journal of School Health ; (12): 893-896, 2020.
Article in Chinese | WPRIM | ID: wpr-822535

ABSTRACT

Objective@#To understand the relationship between the main body components and blood pressure in adolescents and to understand the association between major body components and blood pressure in adolescents provides a basis for reducing the risk of hypertension.@*Methods@#A total of 366 middle school students in Tianjin aged 12-15 with the normal intelligence and no serious disease, willing to participate in the research were selected. Inbody 520 human body composition analyzer was used to analyze their body composition. Systolic blood pressure diastolic pressure curve fit for the dependent variable selection, the optimal model of the selection criteria for goodness of fit value maximum and the minimum AIC value.@*Results@#The percentage of body fat of girls was higher than that of boys(t=-4.73, P<0.01). The systolic blood pressure pulse pressure difference of liposuction body weight was lower than that of boys(t=8.68, 2.38, 2.37, P<0.05). The systolic and diastolic blood pressure of the mixed obesity group was significantly higher than that of the normal body type group(F=6.59, 4.78, P<0.01). In the six fitting models, except for the secondary model between body fat percentage and diastolic blood pressure, the AIC value and R2 value of boys were not statistically significant, the other models were statistically significant(P<0.05). There was no statistical significance in the three-time model between body fat weight and systolic blood pressure, the linear and logarithmic model between body fat percentage and diastolic blood pressure, the linear, logarithmic, quadratic, cubic, AIC value and R2 value of the combined model, but the other models had statistical significance(P<0.05).Besides, the quadratic and power equations between body weight and systolic and diastolic blood pressure of female students meet the minimum of AIC value and the maximum of corrected goodness of fit R2, the percentage of body fat, body weight and systolic and diastolic blood pressure of male and female students meet the minimum of AIC value and the maximum of corrected goodness of fit R2.@*Conclusion@#Compared with boys, adolescent girls are more prone to obesity and other diseases, and obesity is closely related to blood pressure. It is suggested that the effective control of the growth rate of body fat percentage is conducive to improving physical fitness, preventing and reducing the risk of hypertension, and promoting the healthy growth of adolescents.

13.
Article in Chinese | WPRIM | ID: wpr-848156

ABSTRACT

BACKGROUND: Dual-task walking is more common in daily life, and more challenging than single-task walking. It is more conducive to find potential gait abnormalities in daily life activities. It is widely used to evaluate the changes in motor performance and gait control when attention is distracted. OBJECTIVE: The three-dimensional gait analysis system was applied to compare the difference of gait characteristics under dual-task walking between healthy young people and elderly people so as to provide reference for preventing the elderly people from falling. METHODS: In the youth group, there were 21 cases aged (24.57±2.27) years old and with the height of (1.64±0.08) m. In the elderly group, there were 25 cases aged (62.72±2.39) years old and with the height of (1.60±0.07) m. The two groups of subjects performed the calculation task of “minus 1 (reciprocal) starting from any number within 100” during level walking. Motion Analysis system and Visual 3D software were applied to collect and analyze the gait data. The differences of gait spatiotemporal and kinetic parameters between the two groups were compared when performing dual-task walking. RESULTS AND CONCLUSION: (1) Spatiotemporal parameters: Compared with youth group, both stride length [(1.14±0.09) m vs. (1.20±0.07) m, P < 0.05] and right step length [(0.57±0.04) m vs. (0.60±0.04) m, P < 0.01] were smaller in the elderly group. (2) Kinetic parameters: Compared with the youth group, the left second peak hip abduction moment was higher [(0.94±0.1) Nm/kg vs. (0.86±0.16) Nm/kg, P < 0.01]; the left ankle plantar flexor moment was lower [(1.27±0.11) Nm/kg vs. (1.35±0.15) Nm/kg, P < 0.05]; and bilateral ankle valgus muscle moments were lower [(0.31±0.14) Nm/kg vs. (0.45±0.16) Nm/kg, P < 0.01; (0.38±0.15) Nm/kg vs. (0.51±0.14) Nm/kg, P < 0.01] in the elderly group. (3) These results suggest that the walking automation ability of the elderly group was lower than youth group during dual-task walking. Dual-task walking mainly affects the hip and ankle joints of the elderly, which may be related to the challenge of dual-task walking to the elderly so that they could adapt the corresponding compensatory mode to maintain stability. The characteristics of gait changes in the elderly under dual tasks can be considered as a reference for the prevention of falls.

14.
Article in Chinese | WPRIM | ID: wpr-846579

ABSTRACT

The outbreak of COVID-19 coronavirus pneumonia in December 2019 has aroused great concern worldwide. At present, the COVID-19 coronavirus pneumonia is highly contagious, rapid and widespread. It has been reported that COVID-19 virus is spread by respiratory droplets and direct contact transmission, and it has various clinical manifestations and recurrent is common. Some patients do not even appear obvious fever and have negative results for throat swab virus culture at the onset of the disease, but the rapid deterioration in their clinical condition usually occurred, which bring difficulties to scientific diagnosis and treatment. At present, western medicine treats most patients with anti-viral drugs, hormones and other drugs, or treats critically ill patients with ECMO oxygenation, important organ function support and other emergency treatments. Traditional Chinese medicine (TCM) based on syndrome differentiation and treatment has obtained curative effects in this outbreak. In order to improve the effects and safety of Chinese and western drug therapy, we applied literature-mining method and network pharmacology, summarized the potential liver injury during the application of western medicine and discussed hepatotoxicity networks and potential pathway targets of ingredients in Chinese patent medicine and Chinese herbal compound. This study not only summarizes essential information regarding potential drug-induced liver injury and biomarkers for pharmacovigilance, but also provides insights for liver protection by TCM or TCM in combination with western medicine in the treatment of novel coronavirus.

15.
Article in Chinese | WPRIM | ID: wpr-828679

ABSTRACT

OBJECTIVE@#To study the value of fractional anisotropy (FA) of regions of interest (ROI) on magnetic resonance diffusion tensor imaging (DTI) in bilirubin-induced neurological dysfunction in neonates.@*METHODS@#A total of 91 neonates with hyperbilirubinemia who were hospitalized from January 2017 to January 2018 were enrolled. According to the peak level of total serum bilirubin, they were divided into three groups: mild/moderate increase (n=45), severe increase (n=35), and extremely severe increase (n=11). According to the presence or absence of abnormal neurological manifestations, they were divided into two groups: neurological dysfunction (n=20) and non-neurological dysfunction (n=71). Ten healthy full-term infants were enrolled as the control group. Head DTI was performed for all neonates to measure the FA values of the bilateral globus pallidus, the anterior limb of the internal capsule, the posterior limb of the internal capsule, and the cerebellar dentate nucleus.@*RESULTS@#The extremely severe increase group had significantly lower FA values of the globus pallidus than the control, mild/moderate increase, and severe increase groups (P<0.05). The severe increase group had significantly lower FA values of the globus pallidus than the control group (P<0.05). The extremely severe increase group had significantly lower FA values of the posterior limb of the internal capsule than the control, mild/moderate increase, and severe increase groups (P<0.05). The neurological dysfunction group had significantly lower FA values of the globus pallidus and the posterior limb of the internal capsule than the non-neurological dysfunction group (P<0.05).@*CONCLUSIONS@#Serum bilirubin level combined with the changes in the DTI FA values of the globus pallidus and the posterior limb of the internal capsule can be used to predict the injury of cerebral nuclei and white matter fibers.


Subject(s)
Anisotropy , Bilirubin , Brain , Diffusion Magnetic Resonance Imaging , Diffusion Tensor Imaging , Humans , Infant, Newborn , Magnetic Resonance Imaging , Magnetic Resonance Spectroscopy , White Matter
16.
Article in Chinese | WPRIM | ID: wpr-828396

ABSTRACT

Forsythiae Fructus is divided into Qingqiao and Laoqiao due to different harvesting periods. So far, the accumulation of heavy metals in the two types of Forsythiae Fructus has not been reported. In this study, the residual levels of copper(Cu), lead(Pb), chromium(Cr), arsenic(As), cadmium(Cd) and mercury(Hg) in 29 batches of Laoqiao and 60 batches of Qingqiao were determined by inductively coupled plasma mass spectrometry(ICP-MS). The samples were collected from Shanxi, Shaanxi, Henan, and Hebei Provinces. In addition, the diversity and correlation of harmful elements in Qingqiao and Laoqiao were analyzed by multivariate statistical method. Furthermore, principal component analysis(PCA) was used to analyze the harmful elements concentrations of Qingqiao and Laoqiao. The results showed that there was a significant difference on the residual levels of heavy metals and harmful elements between Qingqiao and Laoqiao. Among them, the content of Pb in Laoqiao is significantly higher than that in Qingqiao(P<0.01), while the content of Cu is significantly lower than that in Qingqiao. However, the difference in harmful elements among different producing areas of Forsythiae Fructus is not significant. PCA analysis showed that Qingqiao and Laoqiao were successfully grouped into two categories. This study suggests significant difference in the residual levels of heavy metals and harmful elements between Qingqiao and Laoqiao. Besides, Forsythiae Fructus has a certain enrichment of Pb in the fruit ripening stage(Laoqiao). This study provides a reference for the quality classification and safety of Forsythiae Fructus.


Subject(s)
Arsenic , Copper , Drugs, Chinese Herbal , Metals, Heavy
17.
Article in Chinese | WPRIM | ID: wpr-828369

ABSTRACT

A highly sensitive monoclonal antibody against aflatoxin B_1(AFB_1) was prepared and an indirect competition enzyme-linked immunosorbent assay(ic-ELISA) was established based on the antibody which was used for high-throughput and rapid screening of AFB_1 contamination in Chinese herbal medicines to ensure the safety of medication. In this study, the structure of AFB_1 was modified by improved oxime method, and the carrier protein was coupled by EDC-NHS method to obtain the complete antigen of AFB_1, which was more convenient and environmental friendly. The Balb/c female mice were immunized using increasing the immunization dose and various ways of injection, and finally the AFB_1 monoclonal antibody was prepared. The AFB_1 monoclonal antibody belongs to IgG_(2 b) immunoglobulin by identifying its immunological characteristics, and its sensitivity(IC_(50)) can reach 0.15 μg·L~(-1), and the affi-nity is 2.81×10~8 L·mol~(-1). The cross-reaction rates of AFB_2, AFG_1, and AFG_2 were 35.07%, 8.75%, and 1.15%, respectively, and there was almost no cross-reactivity with other mycotoxins. Based on the high sensitivity and specificity of the antibody, an ic-ELISA method was established and applied to the determination of AFB_1 contamination in Ziziphi Spinosae Semen. According to the matrix matching standard curve, the linear concentration range for AFB_1 was 0.05-0.58 μg·L~(-1)(R~2=0.992), the recoveries were 88.00%-119.0%, and the detection limit was 1.69 μg·kg~(-1). The AFB_1 in 33 batches of Ziziphi Spinosae Semen samples was determined by ic-ELISA, and the contamination level was 3.62-206.58 μg·kg~(-1). The linear correlation coefficient between the detection results of ic-ELISA and UHPLC-MS/MS was 0.996, and there were no false positive and false negative cases. It indicates that the established ic-ELISA is accurate and reliable, and could provide a simple and effective technique for fast screening of AFB_1 contamination in Ziziphi Spinosae Semen, and also could be considered as the reference for the detection and monitoring of AFB_1 contamination in other Chinese herbal medicines.


Subject(s)
Aflatoxin B1 , Animals , Antibodies, Monoclonal , Drug Contamination , Enzyme-Linked Immunosorbent Assay , Female , Mice , Semen , Chemistry , Tandem Mass Spectrometry
18.
Article in Chinese | WPRIM | ID: wpr-775070

ABSTRACT

OBJECTIVE@#To study the level of circulating Alarin in obese children and its association with various metabolic parameters.@*METHODS@#A total of 86 obese children with a body mass index (BMI) above the 95th percentile were enrolled as the obesity group, and 82 healthy children, matched for age and sex, with a BMI below the 85th percentile were enrolled as the healthy control group. According to the presence or absence of insulin resistance (IR), the obesity group was further divided into an IR group with 27 children and a non-IR group with 59 children. Related anthropometric parameters, including body height, body weight, systolic blood pressure (SBP), and diastolic blood pressure (DBP), were measured, and BMI was calculated. Total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), uric acid (UA), fasting insulin (FINS), and fasting blood glucose (FBG) were measured. The area under the receiver operating characteristic curve (AUC) for glucose and insulin, Homeostasis Model Assessment of Insulin Resistance (HOMA-IR), and whole-body insulin sensitivity index (WBISI) were calculated. ELISA was used to measure the level of circulating Alarin.@*RESULTS@#The obesity group had a significantly higher level of circulating Alarin than the healthy control group (P<0.01). The IR group had a significantly higher level of circulating Alarin than the non-IR group (P<0.01). Circulating Alarin was positively correlated with BMI, TG, FBG, AUC-glucose, AUC-FINS, and HOMA-IR (P<0.05) and was negatively correlated with WBISI (P<0.05). The circulating Alarin level had a linear regression relationship with BMI, FBG, and HOMA-IR, among which HOMA-IR had the greatest influence on the circulating Alarin level (P<0.05).@*CONCLUSIONS@#There is a significant increase in the circulating Alarin level in obese children, which may be associated with the development of obesity and IR.


Subject(s)
Blood Glucose , Body Mass Index , Child , Galanin-Like Peptide , Humans , Insulin , Insulin Resistance , Obesity
19.
Article in Chinese | WPRIM | ID: wpr-773253

ABSTRACT

In this paper,the effects of active fractions of Ferula ferulaeoides on the growth and apoptosis of human gastric cancer cell MGC-803 transplantation tumor were systematically studied. The subcutaneous ectopic transplantation tumor model was established in human gastric cancer MGC-803 nude mice by cell suspension implantation method. The anti-tumor rate and organ index were used to evaluate the anti-tumor effect of the active fractions of F. ferulaeoides on the tumor-bearing nude mice. HE staining,TUNEL staining,RT-PCR,Western-blot and ELISA were used for pathological examination,apoptosis observation,and detection of apoptosis-related genes,proteins and cytokines expression. The results showed that as compared with the model group,the low,medium and high doses of the active fraction of F. ferulaeoides had inhibitory effects on xenografts in nude mice,respectively,in a dose-dependent manner; the apoptotic ratio was increased with the increase of drug concentration. As compared with the model group,F. ferulaeoides could down-regulate the expression of survivin mRNA in nude mice,and the protein expression levels of Bax,Bcl-2,caspase-3 and caspase-9 in tumor tissues of nude mice could be increased to different degrees in F. ferulaeoides groups. The contents of IL-10 and TGF-β1 in plasma of nude mice were decreased in high dose group of F. ferulaeoides active fractions. The results indicated that F. ferulaeoides can significantly inhibit the growth of human gastric cancer MGC-803 subcutaneously transplanted tumor,and its mechanism may be related with down-regulating the expression of survivin mRNA,and up-regulating the expression of apoptosis-related proteins Bax,caspase-3 and caspase-9.


Subject(s)
Animals , Apoptosis , Caspase 3 , Metabolism , Cell Line, Tumor , Cytokines , Metabolism , Ferula , Chemistry , Humans , Mice , Mice, Inbred BALB C , Mice, Nude , Neoplasm Transplantation , Plant Extracts , Pharmacology , Proto-Oncogene Proteins c-bcl-2 , Metabolism , Stomach Neoplasms , Drug Therapy , bcl-2-Associated X Protein , Metabolism
20.
Article in Chinese | WPRIM | ID: wpr-773187

ABSTRACT

The element speciation analysis for heavy metals in herbal medicines is still in the beginning stage. In this study,the total amount of arsenic( As) in 103 batches of 17 commonly used Chinese medicines( including 16 plant medicines and 1 medicinal fungus) was detected by inductively coupled plasma mass spectrometry( ICP-MS). Furthermore,based on HPLC-ICP-MS,the simultaneous detection methods of six As speciation kinds in traditional Chinese medicines were established. An AS7 anion exchange column was selected and the As forms in 17 traditional Chinese medicines was systematically analyzed. The results showed that the method of pretreatment of medicinal materials by microwave digestion and the detection of total amount of As by ICP-MS was stable and reliable. As for the speciation analysis of As,the high-speed ultrasonic extraction method was adopted,and it showed that the linear relationship of the six As speciation was satisfied with the correlation coefficient R2>0. 999 9. The LOQ of six kinds of As speciation were 0. 20,0. 10,0. 15,0. 10,0. 25,0. 10 μg·L~(-1) for arsenic betaine( As B),arsenious acid [As( Ⅲ) ],dimethyl arsenic( DMA),arsenic choline( As C),monomethyl arsenic( MMA),arsenic acid[As( Ⅴ) ],respectively. The recoveries were between 84. 24% and 121. 5%,and the relative standard deviations were 2. 7% to 11%. Among the 103 batches of medicinal materials,only one batch of sample As exceeded the Chinese Pharmacopoeia limit standard; As( Ⅲ) and As( Ⅴ) had high detection rate in 103 batches of Chinese herbal medicines,within which As( Ⅴ) was the main detected form,and inorganic As accounted for the ratio reached 80. 90%-98. 73%; some samples detected DMA,MMA and As B,As C was not detected in any batch. This study established an analytical method suitable for the speciation of As in Chinese herbal medicines,and provided basic data for As residual residue in Chinese herbal medicines,which can provide important reference for the risk assessment and quality standards.


Subject(s)
Arsenic , Chromatography, High Pressure Liquid , Drugs, Chinese Herbal , Reference Standards , Mass Spectrometry
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