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Objective@#To compare cooperation degree and visual acuity difference between Lea Symbols chart and ETDRS chart in Chinese preschool children.@*Methods@#A prospective self-control study design was performed.Two hundred and forty-one children aged from 42 months to 78 months in Quanzhou Quangang Experimental Kindergarten were enrolled and the mean age was (61.9±10.3) months.Among them, 132 pre-school children had normal refractive index.All children completed comprehensive ophthalmological examinations and measurement of monocular visual acuity using Lea Symbols chart and ETDRS chart.All monocular visual acuity scores were recorded in LogMAR form.This study followed the Declaration of Helsinki and this study protocol was approved by Medical Ethics Committee of The Second Affiliated Hospital of Fujian Medical University (No.2017[62]). Written informed consent was obtained from all guardians before entering the study.@*Results@#The cooperation degrees of Lea Symbols chart and ETDRS chart were 96.7% and 95.0% in 42-78 months of children, respectively, with no significant difference between the two visual acuity tables (χ2=1.669, P>0.05). The visual acuity measured by Lea Symbols chart was positively correlated with that measured by ETDRS chart (rs=0.726, P<0.001). The measurement consistency of the two chart was good (Kappa=0.531). Among 132 normal refractive children, the visual acuity level measured by Lea Symbols chart was higher than that measured by ETDRS chart (W=-7.461, P<0.001); the measurement consistency of the two visual acuity chart was good (Kappa=0.467). There was no significant difference between the two charts in measuring the binocular vision difference (W=-0.889, P=0.374); the visual acuity levels of boys measured by Lea Symbols chart and ETDRS chart were higher than those of girls, and the difference was statistically significant (U=-3.352, -4.679; both at P<0.001); the visual acuity values measured by Lea Symbols chart and ETDRS chart were negatively correlated with age (rs=-0.423, -0.437; both at P<0.001); the visual acuity measured by Lea Symbols chart was higher than that measured by ETDRS chart in different age groups, and the differences were statistically significant (all at P<0.001).@*Conclusions@#The measurement of visual acuity by Lea Symbols chart and ETDRS chart can be achieved with a high cooperation degree in 42 months and older children.The visual acuity measured by Lea Symbols chart is higher than that measured by ETDRS chart.In the preschool children's vision screening, we should pay attention to the difference between the two kinds of visual charts, and be careful to judge the abnormal vision.
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Objective To compare cooperation degree and visual acuity difference between Lea Symbols chart and ETDRS chart in Chinese preschool children. Methods A prospective self-control study design was performed. Two hundred and forty-one children aged from 42 months to 78 months in Quanzhou Quangang Experimental Kindergarten were enrolled and the mean age was (61. 9±10. 3) months. Among them,132 pre-school children had normal refractive index. All children completed comprehensive ophthalmological examinations and measurement of monocular visual acuity using Lea Symbols chart and ETDRS chart. All monocular visual acuity scores were recorded in LogMAR form. This study followed the Declaration of Helsinki and this study protocol was approved by Medical Ethics Committee of The Second Affiliated Hospital of Fujian Medical University ( No. 2017 [ 62 ] ) . Written informed consent was obtained from all guardians before entering the study. Results The cooperation degrees of Lea Symbols chart and ETDRS chart were 96. 7％ and 95. 0％ in 42-78 months of children,respectively, with no significant difference between the two visual acuity tables (χ2=1. 669,P>0. 05). The visual acuity measured by Lea Symbols chart was positively correlated with that measured by ETDRS chart (rs=0. 726,P<0. 001). The measurement consistency of the two chart was good ( Kappa=0. 531 ) . Among 132 normal refractive children, the visual acuity level measured by Lea Symbols chart was higher than that measured by ETDRS chart (W=-7. 461,P<0. 001);the measurement consistency of the two visual acuity chart was good (Kappa=0. 467). There was no significant difference between the two charts in measuring the binocular vision difference (W=-0. 889,P=0. 374);the visual acuity levels of boys measured by Lea Symbols chart and ETDRS chart were higher than those of girls,and the difference was statistically significant (U=-3. 352,-4. 679;both at P<0. 001);the visual acuity values measured by Lea Symbols chart and ETDRS chart were negatively correlated with age ( rs =-0. 423,-0. 437;both at P<0. 001 );the visual acuity measured by Lea Symbols chart was higher than that measured by ETDRS chart in different age groups,and the differences were statistically significant (all at P<0. 001). Conclusions The measurement of visual acuity by Lea Symbols chart and ETDRS chart can be achieved with a high cooperation degree in 42 months and older children. The visual acuity measured by Lea Symbols chart is higher than that measured by ETDRS chart. In the preschool children's vision screening,we should pay attention to the difference between the two kinds of visual charts, and be careful to judge the abnormal vision.
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Objective To investigate whether follicular helper T(Tfh) cells were involved in the development of Henoch-Sch?nlein purpura(HSP) and Henoch-Sch?nlein purpura nephritis(HSPN) in chil-dren through affecting CD40/CD40L axis. Methods Fifty-five subjects were enrolled in this study and di-vided into four groups as follows:22 children with HSP but without renal involvement(Group A),11 chil-dren with HSPN presenting with microhematuria(Group B),11 children with HSPN presenting with micro-hematuria and proteinuria (Group C) and 11 healthy children (control group). Flow cytometry was per-formed to detect the percentages of CD19+B cells and their subsets,CD19+B cells and CD19+CD38+B cells secreting different Ig classes,CD19+CD40+B cells and their subsets and Tfh cells expressing CD40 ligand (CD40L). Results Compared with the control group,the percentages of CD19+CD86+B,CD19+CD138+B and CD40L+Tfh cells significantly increased in Group C(P<0.05) and slightly increased in Groups A and B (P>0.05). No significant difference in the percentages of CD19+B cells, CD19+CD27+B cells, CD19+B cells or CD19+CD38+B cells expressing IgG, IgM, IgD, CD19+B cells or CD19+B cell subsets secreting CD40 was found between the control group and Groups A,B and C(P>0.05). Moreover,the percentages of CD19+B and CD19+CD38+B cells secreting IgA and IgE in Groups A,B and C were higher than those in the control group(P<0.05). Secretion of IgA by CD19+B and CD19+CD38+B cells were positively correla-ted with the expression of CD40L by Tfh cells(P<0.05). Conclusion Tfh cell-mediated abnormal expres-sion of CD40/CD40L might play an important role in the development of HSP and be related to the clinical severity of renal involvement in HSPN.
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In the study, fluorescent enzyme-linked immnoabsorbent assay for detection of Staphylococcus aureus was established with IgG from pig as capture antibody and quantum dot nanobeads (QBs) labeled vancomycin (QB-Vans) as testing antibody. Quantum dot of about 100 nm partical size nanobeads were prepared and linked with vancomycin. The optimum concentrations of salt ions were 0.01 mol/L, and the optimum pH was 6.0. Under the optimum conditions, the detection sensitivity for S. aureus was 10⁴ CFU/mL, and there was no cross-reaction with other pathogenic bacteria. Thus, the method could be used for rapid screening of S. aureus, for the clinical monitoring and foodborne pathogens detection.
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Objective To analyze the status of family hardiness and its influencing factors in children with refractory nephrotic syndrome (RNS).Methods A cross-sectional study was carried out in the family members of 120 children patients with RNS admitted to our hospital from January 2013 to February 2016.The general information questionnaire,family hardiness scale (FHI),general self-efficacy scale (GSES),self-rating anxiety scale (SAS),self-rating depression scale (SDS) and simplified coping style questionnaire (SCSQ) were used for investigation and evaluation.The status of family hardiness of children patients with RNS was summarized and its influencing factors were analyzed.Results (1)Among the scores of family hardiness in patients of children with RNS,the score of responsibility dimension was the highest,followed by the score of control dimension.The self-efficacy scores of the family members were in the middle level,the scores of anxiety and depression were in mild level,and the score of positive coping was relatively higher.(2)The univariate analysis showed that the treatment time,education level of family members,place of residence,family per capita monthly income and medical payment method were the related factors influencing the family hardiness score (P<0.05);the Pearson correlation analysis showed that self-efficacy score and positive coping score were positively correlated with the family hardiness score (r=0.425,P=0.011;r=0.536,P=0.002),while the anxiety and depression scores were negatively correlated with the family hardiness score (r=-0.581,P=0.001;r=-0.671,P=0.000).The multivariate regression analysis showed that the family per capita monthly income,self-efficacy score,anxiety score,depression score and positive coping were the independent factors influencing the family hardiness.Conclusion The family hardiness of patients of children with RNS is in the middle and upper level.The family income,self-efficacy of family members,positive coping style,anxiety and depression emotions are related factors influencing family hardiness.
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To observe local inflammation reaction and vein thrombosis on rabbit ear vein with methotrexate , ceftri-axone sodium and normal saline .With the extension use of drugs , the numbers of inflammation reaction and throm-bosis in each group were increased , and antibiotic and chemotherapy drug group had a higher rate than the normal saline group .There was a statistically significant difference of the inflammation reaction between the three test groups on the 3rd and 7th day (P<0.05), and a statistically significant difference of thrombosis between the three test groups on the 7 th day ( P<0.05 ) .The physical-chemical properties of drugs and use of time were factors in-fluencing inflammation reaction and thrombosis .
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A CdTe/ZnSe quantum-dot submicrobead ( QBs ) , which exhibited fluorescence intensity approximately 2800-fold stronger than that of single quantum dots, was conjugated with the anti-histidine rich protein( HRP )-Ⅱ mAbs using N-( 3-( Dimethylamino ) propyl )-N'-ethylcarbodiimide hydrochloride ( EDC ) method as fluorescence probe. The goat anti-HRP-Ⅱ polyclonal antibodies and donkey anti-mouse polyclonal antibodies were sprayed onto the nitrocellulose membrane as test line and control line, respectively. The resultant fluorescence probes were introduced to the immunochromatographic strip for the quantitative determination of Plasmodium falciparum. For determination of Plasmodium falciparum in serum, the QBs based immunochromatographic strips exhibited a good dynamic linear range from 5 . 8 Parasite/μL to 8010 Parasite/μL with a limit of detection of 5. 8 Parasite/μL. The detection time of the proposed QBs based immunochromatographic strips for each sample was only 15 min. Moreover, the recovery rates of the intra-and inter-assay ranged from 93. 0% to 111. 9%, and 98. 3% to 115. 1% respectively, while the relative standard deviations ( RSDs) of intra-and inter-assay were below 5%.
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Objective To explore the role of CD4~+CD25~+CD127~(lo) regulatory T cells (Tregs) and inter-leukin (IL)-6, transforming growth factor beta (TGF-β), IL-17 in the pathogenesis of lupus nephritis (LN) by detecting the levels of IL-10, IL-6, TGF-β, IL-17, CD4~+CD25~+CD127~(lo) Tregs in the peripheral blood of patients with active and inactive LN. Methods Three-colour flow cytometry was used to quantitatively measure proportions of Treg cells, the levels of TGF-β, IL-17 were detected by ELISA, and the levels of IL-10, IL-6 in the peripheral blood were detected by Cytometric Bead Array System. Results ① Compared with the inactive LN and the normal controls (P<0.01), the level of CD4~+CD25~+CD127~(lo) Tregs from patients with active LN was lower(P<0.01). When compared with the normal controls, the level of CD4~+CD25~+CD127~(lo) Tregs from LN inactive patients had no significant difference (P>0.05). ② Compared with patients with inactive LN, the levels of IL-10, IL-6 was higher (P<0.01) in patients with active LN. ③ Compared with the patients with inactive LN and the normal controls, the levels of TGF-β, IL-17 was not significantly different (P>0.05). ④ The level of CD4~+CD25~+CD127~(lo) T cell was correlated negatively with the levels of IL-10, IL-6 and SLEDAI (P<0.05), and was not correlated with C3 and C4. ⑤ SLEDAI was correlated positively with the levels of IL-10 and IL-6 (P<0.01). SLEDAI and the level of IL-10 were correlated negatively with C3 and C4 (P<0.01 for both). ⑥ The level of CD4~+CD25~+CD127~(lo) Tregs from LN was not correlated with TGF-β and IL-17. ⑦ TGF-β was correlated positively with the level of IL-17. Conclusion ① The level changes of Tregs and IL-10, IL-6, TGF-β in the peripheral blood of LN can be used as the indicators for the activity status of lupus nephritis. ② Tregs and IL-10, IL-6 in the peripheral blood of LN patients is negatively correlated. ③ The glucocorticoid hormone is helpful to elevate the level of Tregs but decrease IL-17. T cell level can vary in different body status, different microenvironmental and immune status.