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Objective@#To investigate the prevalence and influencing factors of electronic cigarette (e-cigarette) use among adolescents in Haidian District, Beijing, so as to provide insights into tobacco control among adolescents.@*Methods@#The students in junior high school, high school and vocational high school were recruited from Haidian District using the stratified cluster random sampling method in October of 2019, and subjects' demographic features and use of e-cigarettes were collected using the Questionnaire for Survey on Tobacco Prevalence among Adolescents in China in 2019. The factors affecting e-cigarette use were identified among adolescents using the multivariable logistic regression analysis.@*Results@#A total of 658 adolescents were investigated, including 315 junior high school students ( 47.87% ), 221 high school students ( 33.59% ), and 122 vocational high school students ( 18.54% ), and there were 261 boys ( 39.66% ), and 397 girls ( 60.34% ). There were 605 students that had heard of electronic cigarettes ( 91.95% ), 63 students that had used e-cigarettes (9.57%), and 23 students with current use of e-cigarettes ( 3.50% ), and there were 39 students that had never used electronic cigarettes but had a tendency of use in the future ( 6.55% ). Multivariable logistic regression analysis identified parental smoking ( OR=2.408, 95%CI: 1.179-4.916 ), close friends' smoking ( OR=3.597, 95%CI: 1.715-7.544 ) and cigarette smoking ( OR=23.029, 95%CI: 11.092-47.812 ) as factors affecting e-cigarette use among adolescents.@*Conclusions@#The prevalence of electronic cigarette uses is 9.57% among adolescents in Haidian District, Beijing. Parental smoking, peer smoking and use of cigarettes may facilitate the use of e-cigarettes among adolescents.
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Objective@#To observe the differences in specific IgE of allergic diseases.@*Methods@#The allergens in 1 028 patients (including 606 cases of eczema/specific dermatitis, 319 Cases of urticaria, 103 cases of papular urticaria and prurigo) were detected by German Allergy Screen Immune mark method.@*Results@#There were statistically significant differences (P<0.05) in the positive rate of allergens among the four allergic diseases, including Penicillium notatum/ Piptocephalis/ aspergillus fumigatus/aspergillus niger/Alternaria (χ2=6.663), milk (χ2=10.320) and cashew nut (χ2=14.325); The common allergen in <1-year-old group was cat dander (22.75%), egg white (35.93%); The common allergen in 1 to 3 years old group was dog dander (22.17%), milk (61.82%) and crab (3.45%). The common allergen in>3-year-old group was dust mite (10.77%), cockroach (3.52%), Penicillium notatum/Piptocephalis/ aspergillus fumigatus/aspergillus niger/Alternaria (21.32%), Short ragweed/artemisia/Humulus scandens/quinoa (14.73%). The positive rate of specific IgE against house dust in the third quarter was the highest (17.78%) and the difference was statistically significant (χ2=14.443, P=0.002). Among the statistically significant difference in the positive rate of specific IgE between eczema/atopic dermatitis in different age groups (χ2=10.204, P=0.006), the positive rate in the group of 1 to 3 years was the highest.@*Conclusions@#Different diseases, ages, and seasonal specific allergens are different, individualized treatment can be carried out according to disease types, ages and seasons.
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Objective To explore the diagnostic value of flow cytometry in detecting HPV E6／E7 mRNA of human papilloma virus (HPV) in the diagnosis of cervical lesions. Methods From January 2017 to September 2018,119 women with suspected cervical lesions in the department of gynecology and obstetrics of Shanxi Maternal and Child Health Hospital were selected. Flow cytometry was used to detect HPV E6 ／ E7 mRNA in cervical exfoliated cells of women,and the DNA of HPV was detected by the method of hybrid capture 2 (HC2). Results 31. 09%(37／119) HPV E6／E7 mRNA and 57. 14%(68 ／ 119) HPV DNA were positive in 119 cases. The positive rate of HPV E6／E7 mRNA in cervical intraepithelial neoplasia ( CIN)2+ group was 77. 78%(28／36),which was statistically significant compared with 20. 00%(4／20) in CIN1 group (χ2＝15. 246,P＜0. 01),and was statistically significant compared with 7. 94%(5／63) in nilm group (χ2＝50. 286,P＜0. 01) . In nilm group,HPV E6 ／ E7 mRNA positive rate was 7. 94%(5／63) and HPV DNA positive rate was 30. 16%(19 ／ 63),which was statistically significant (χ2＝10. 088,P＝0. 001) . In cin1 group,HPV E6／ E7 mRNA positive rate was 20. 00%(4 ／ 20) and HPV DNA positive rate was
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Objective To observe the differences in specific IgE of allergic diseases.Methods The allergens in 1 028 patients (including 606 cases of eczema/specific dermatitis,319 Cases of urticaria,103 cases of papular urticaria and prurigo) were detected by German Allergy Screen Immune mark method.Results There were statistically significant differences (P ＜ 0.05) in the positive rate of allergens among the four allergic diseases,including Penicillium notatum/ Piptocephalis/ aspergillus fumigatus/aspergillus niger/Alternaria (x2 =6.663),milk (x2 =10.320) and cashew nut (x2 =14.325);The common allergen in ＜ 1-year-old group was cat dander (22.75％),egg white (35.93％);The common allergen in 1 to 3 years old group was dog dander (22.17％),milk (61.82％) and crab (3.45％).The common allergen in ＞ 3-year-old group was dust mite (10.77％),cockroach (3.52％),Penicillium notatum/Piptocephalis/aspergillus fumigatus/aspergillus niger/Altemaria (21.32％),Short ragweed/artemisia/Humulus scandens/quinoa (14.73％).The positive rate of specific IgE against house dust in the third quarter was the highest (17.78％) and the difference was statistically significant (x2 =14.443,P =0.002).Among the statistically significant difference in the positive rate of specific IgE between eczema/atopic dermatitis in different age groups (x2 =10.204,P =0.006),the positive rate in the group of 1 to 3 years was the highest.Conclusions Different diseases,ages,and seasonal specific allergens are different,individualized treatment can be carried out according to disease types,ages and seasons.
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Objective:To optimize the extraction process of the water extract of Zhenwutang and study on the preparation of gran -ule of Zhenwu decoction to provide reference for the development and utilization of Zhenwutang granule .Methods: Heating refluxing was used, and the effects of the ratio of solid to liquid , extraction time and times were investigated by orthogonal test .As the synthetic indices of evaluation , the yield of extraction and the contents of paeoniflorin and benzoylmesaconine measured by HPLC were deter -mined to confirm the optimal water extraction process of Zhenwutang granule .Besides, granularity pass rate, moisture, loss on drying, solubility and angle of repose of the granule were regarded as the indices to evaluate the best ratio of the excipients in the preparation of the granule by single factor test.Results:Paeoniflorin and benzoyl mesaconitine had good linearity within the range of 5.45-32.70μg (r=0.9996) and 3.24-16.80 μg(r=0.9997), respectively.The average recovery was 99.62％ (RSD =1.34％ , n=6) and 1017.2 ％(RSD=1.74％, n=6), respectively.The optimum extraction process was as follows :the ratio of solid to liquid was 1:12 with twice refluxing extraction ( 2h for each time) .The optimum granule forming process was as follows:the pharmaceutical excipients were a mixture of dextrin and soluble starch with the best ratio of 1:3. The granularity pass rate , moisture, loss on drying, solubility and angle of repose of the granule was94 .12％ ,4.87 ％, 0.93％,89 .23％ and 36.18°, respectively.Conclusion:The optimized re-fluxing extraction process is stable , reliable and feasible , and the prepared granule is in good formability and melting .
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Objective To study the difference of detection rate between PCR and high-resolution melt (HRM)for detecting the bacterial drug resistance gene aac(6′)-Ib-cr.Methods The PCR method was adopted to detect the aac(6′)-Ib gene in 299 strains of common Gram-negative bacilli,and the PCR positive products of aac (6′)-Ib were digested with BtsCI.Meanwhile Aac (6′)-Ib and aac (6′)-Ib-cr genes in above bacterial strains were detected by adopting the HRM technique.Results A total of 29 isolates were i-dentified as aac (6′)-Ib gene,and 21 mutations were aac (6′)-Ib-cr,with a mutation rate of 72.4% (21/29)for PCR and restriction enzyme digestion.And the results of the HRM test were in good agreement with each other.Conclusion PCR and HRM are similar for the detection of the bacterial resistance gene aac (6′)-Ib-cr,and aac (6′)-Ib-cr gene could be detected by a simpler HRM tech-nique instead of PCR and enzyme digestion,especially for a large number of screening.
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Objective To analyze the compliance and the influencing factors of the children with congenital hypothyroidism (CH).Methods 231 children with CH were collected for this study.The questionnaire survey and referring the case were used to collect relative factors.According to regular follow -up treatment,the children were divided into two groups,one group was good compliance and the other one was bad compliance.The results were ana-lyzed by two -independent sample t -test,2 -test and unconditioned logistic regression analysis.Results (1)Blood TSH(χ2 =59.870,P =0.00) and blood FT4 (χ2 =6.468,P =0.01) were normal,short distance from the hospital (χ2 =16.375,P =0.00),level of education of their mothers was high(χ2 =7.483,P =0.02),and regular compli-ance treatment of children with CH(χ2 =7.483,P =0.024) was good.(2) Logistic stepwise regression analysis showed that serum TSH value(OR =17.135),the short distance(OR =1.692) and diagnosis of CH(OR =4.028) were introduced into the logistic regression model (all P <0.05).Conclusion It is essential to take measures actively and reinforce the management of children with long distance,low -educated,and the diagnosis of TSH.More-over,enhancing the regular treatment compliance of children with CH is the key to improve the growth and develop-ment status of children with CH.
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<p><b>OBJECTIVE</b>To explore the interaction between folate deficiency and aberrant expression related to fragile histidine triad (FHIT) gene in the progression of cervical cancerization.</p><p><b>METHODS</b>A total number of 80 patients with histological diagnosis of cervix inflammation (CI), 55 cervical intraepithelial neoplasm I (CIN I), 55 cervical intraepithelial neoplasm II/III (CIN II/III) and 64 cervical squamous cell carcinoma (SCC) were included in this study. Levels of serum folate were detected by microbiological assay method and the methylation status of FHIT gene CpG islands was tested by methylation-specific PCR (MSP). FHIT protein levels were measured by Western blot. In vitro, cervical cancer cell lines CaSki (HPV16-positive) was treated with different concentrations of folate. Proliferation and apoptosis of cells, methylation of FHIT gene and the levels of FHIT protein expression were measured in each group. All analyses were performed with SPSS (version 17.0) statistical software. Differences among groups were assessed by chi-square test, Kruskal-Wallis test. Spearman correlation, and the interaction effects were evaluated by additive model.</p><p><b>RESULTS</b>The levels of serum folate (H = 59.08, P < 0.001) and FHIT protein expression (H = 50.93, P < 0.001) decreased gradually along with the severity of cervix lesions, while the methylation rates of FHIT gene CpG islands increased (trend χ² = 28.34, P < 0.001). Both levels of serum folate levels and FHIT protein expression were positively correlated (r = 0.213, P = 0.001), with an additive interaction seen between them in CIN I, CIN II/III, SCC groups. In vitro, both rates related to proliferation inhibition (r = 0.98, P < 0.001) and apoptosis (r = 0.99, P < 0.001) together with the levels of FHIT protein expression (r = 0.97, P < 0.001) were all increased gradually with the increase of folate concentration while the methylation status of FHIT gene CpG islands all changed from positive to negative gradually.</p><p><b>CONCLUSION</b>Results from our study revealed that both folate deficiency and FHIT protein aberrant low expression might increase the risk of developing cervical cancer and cervix precancerous lesions, and thus play a synergistic action in the progression of cervical cancerization.</p>
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Female , Humans , Acid Anhydride Hydrolases , Metabolism , Apoptosis , Carcinoma, Squamous Cell , Pathology , Uterine Cervical Dysplasia , Pathology , Disease Progression , Folic Acid , Blood , Folic Acid Deficiency , Epidemiology , Human papillomavirus 16 , Neoplasm Proteins , Metabolism , Polymerase Chain Reaction , Uterine Cervical Neoplasms , PathologyABSTRACT
<p><b>OBJECTIVE</b>To explore the effect of folate on cell proliferation and apoptosis as well as on DNA methylation, expression of mRNA and protein of fragile histidine triad (FHIT)gene in cervical cancer cells.</p><p><b>METHODS</b>Cervical cancer cell lines including CaSki (HPV16-positive) and C33A (HPV-negative)were cultured in vitro with different folate concentrations. Cell proliferation and apoptosis were determined by viable cell counting and flow cytometry while FHIT gene DNA methylation was used with methylation specific PCR (MSP). Both gene expression of FHIT protein and mRNA were detected by Western blot and Real-time PCR, respectively.</p><p><b>RESULTS</b>Folate could inhibit the proliferation and promote the apoptosis in two kinds of cervical cancer cells. The number of viable cells decreased (C33A:r = 0.98, P < 0.001; CaSki:r = 0.98, P < 0.001) and the apoptosis rate increased (C33A:r = 0.98, P < 0.001; CaSki:r = 0.99, P < 0.001) along with the increase of folate concentration. FHIT gene DNA methylation showed all positive at the folate concentration levels of 1 µg/ml and 10 µg/ml, partially positive at 100 µg/ml and 250 µg/ml, but negative at 500 µg/ml and 1 000 µg/ml in both C33A and CaSki cells. Comparing with the control group, the mRNA or protein relative expression levels of FHIT gene in different folate concentrations were statistically significant in two kinds of cells, and showing that the FHIT gene mRNA expression (C33A:r = 0.96, P < 0.001; CaSki:r = 0.94, P < 0.001) and protein expression (C33A:r = 0.96, P < 0.001; CaSki:r = 0.97, P < 0.001) both increased along with the increase of folate concentration.</p><p><b>CONCLUSION</b>Our findings indicated that adequate folate seemed to be able to effectively inhibit the proliferation of cervical cancer cells and facilitate their apoptosis in vitro, so would reverse the aberration mRNA and protein expression of FHIT gene.</p>
Subject(s)
Female , Humans , Acid Anhydride Hydrolases , Genetics , Metabolism , Apoptosis , Cell Line, Tumor , Cell Proliferation , Culture Media , Chemistry , DNA Methylation , Folic Acid , Pharmacology , Neoplasm Proteins , Genetics , Metabolism , Uterine Cervical Neoplasms , Genetics , PathologyABSTRACT
Objective To explore the effect of folate on cell proliferation and apoptosis as well as on DNA methylation,expression of mRNA and protein of fragile histidine triad(FHIT)gene in cervical cancer cells. Methods Cervical cancer cell lines including CaSki(HPV16-positive)and C33A(HPV-negative)were cultured in vitro with different folate concentrations. Cell proliferation and apoptosis were determined by viable cell counting and flow cytometry while FHIT gene DNA methylation was used with methylation specific PCR(MSP). Both gene expression of FHIT protein and mRNA were detected by Western blot and Real-time PCR,respectively. Results Folate could inhibit the proliferation and promote the apoptosis in two kinds of cervical cancer cells. The number of viable cells decreased (C33A:r=0.98,P<0.001;CaSki:r=0.98,P<0.001) and the apoptosis rate increased(C33A:r=0.98,P<0.001;CaSki:r=0.99,P<0.001)along with the increase of folate concentration. FHIT gene DNA methylation showed all positive at the folate concentration levels of 1μg/ml and 10μg/ml,partially positive at 100μg/ml and 250μg/ml,but negative at 500μg/ml and 1 000μg/ml in both C33A and CaSki cells. Comparing with the control group,the mRNA or protein relative expression levels of FHIT gene in different folate concentrations were statistically significant in two kinds of cells,and showing that the FHIT gene mRNA expression(C33A:r=0.96,P<0.001;CaSki:r=0.94,P<0.001)and protein expression (C33A:r=0.96,P<0.001;CaSki:r=0.97,P<0.001) both increased along with the increase of folate concentration. Conclusion Our findings indicated that adequate folate seemed to be able to effectively inhibit the proliferation of cervical cancer cells and facilitate their apoptosis in vitro,so would reverse the aberration mRNA and protein expression of FHIT gene.
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Objective To explore the effect of folate on cell proliferation and apoptosis as well as on DNA methylation,expression of mRNA and protein of fragile histidine triad(FHIT)gene in cervical cancer cells. Methods Cervical cancer cell lines including CaSki(HPV16-positive)and C33A(HPV-negative)were cultured in vitro with different folate concentrations. Cell proliferation and apoptosis were determined by viable cell counting and flow cytometry while FHIT gene DNA methylation was used with methylation specific PCR(MSP). Both gene expression of FHIT protein and mRNA were detected by Western blot and Real-time PCR,respectively. Results Folate could inhibit the proliferation and promote the apoptosis in two kinds of cervical cancer cells. The number of viable cells decreased (C33A:r=0.98,P<0.001;CaSki:r=0.98,P<0.001) and the apoptosis rate increased(C33A:r=0.98,P<0.001;CaSki:r=0.99,P<0.001)along with the increase of folate concentration. FHIT gene DNA methylation showed all positive at the folate concentration levels of 1μg/ml and 10μg/ml,partially positive at 100μg/ml and 250μg/ml,but negative at 500μg/ml and 1 000μg/ml in both C33A and CaSki cells. Comparing with the control group,the mRNA or protein relative expression levels of FHIT gene in different folate concentrations were statistically significant in two kinds of cells,and showing that the FHIT gene mRNA expression(C33A:r=0.96,P<0.001;CaSki:r=0.94,P<0.001)and protein expression (C33A:r=0.96,P<0.001;CaSki:r=0.97,P<0.001) both increased along with the increase of folate concentration. Conclusion Our findings indicated that adequate folate seemed to be able to effectively inhibit the proliferation of cervical cancer cells and facilitate their apoptosis in vitro,so would reverse the aberration mRNA and protein expression of FHIT gene.
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OBJECTIVE To study the risk factors of extended-spectrum beta-lactamases(ESBLs) producing bacteria infection in children,and provide reference to prevent and control the prevalence of bacterial strain of ESBLs.METHODS In a case and control studys the samples were selected randomly from 2007 to 2009 in the Children′s Hospital of Shanxi Province.The samples of case and control were all 100.RESULTS ?2 Test showed that boy and baby,previous history,pneumonia,medical ward,hospital infection and using antibiotics before admission to hospital were the risk factors;t-test showed that high white blood cell and neutrophil were the protective factors;Logistic regression showed that boy,previous history,hospital infection,using antibiotics before admission to hospital and medical ward were the risk factors and anal tube was a protective factor.CONCLUSIONS Increasing the rate of bacteriological test to the children who have the relative risk factors is very important to prevent and control the prevalence of ESBLs strain.
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Objective To compare the specificity, sensitivity, titers, and rapidity of four methods including papain technique, anti-globulin technique, polybrene test, and micro-column gel test for determination of IgG red blood cell antibodies. Methods Twelve kinds of IgG red blood cell antibodies such as anti-D, anti-E, anti-C, anti-c, anti-e, anti-Jk a, anti-Jk b, anti-Fy a, anti-Fy b, anti-k, anti-S, and anti-s were checked by the four methods. Results Seven kinds of IgG red blood cell antibodies including anti-D, anti-E, anti-C, anti-c, anti-e, anti-Jk a, and anti-Jk b were detected using papain technique (7/12). All of the 12 kinds of IgG antibodies were detected by anti-globulin technique (12/12). Eleven kinds of IgG red blood cell antibodies except anti-k were examined with polybrene test (11/12) and all the antibodies were also determinated by micro-column gel test (12/12). The titers of the antibodies determination suggested that papain technique was less sensitive than other three methods, while the micro-column gel test was more sensitive than other three methods in examination of all the antibodies. The lasting time of four techniques were: papain technique 45 min, anti-human globulin technique 60 min, polybrene test 5 min, and micro-column gel test 30 min. Conclusion Papain technique has some limitation in determination of IgG antibodies and anti-globulin technique is complicated because of long period incubation and multiple wash of red blood cells. Polybrene test is the most simple and convenient technique for determination of IgG antibodies. Micro-column gel test is the most sensitive method in determination of IgG antibodies.