ABSTRACT
BACKGROUND: Plasma epidermal growth factor receptor (EGFR) mutation tests are less invasive than tissue EGFR mutation tests. We determined which of two kits is more efficient: cobas EGFR Mutation test v2 (cobasv2; Roche Molecular Systems, Pleasanton, CA, USA) or PANAMutyper-R-EGFR (Mutyper; Panagene, Daejeon, Korea). We also evaluated whether pleural effusion supernatant (PE-SUP) samples are assayable, similar to plasma samples, using these two kits. METHODS: We analyzed 156 plasma and PE-SUP samples (31 paired samples) from 116 individuals. We compared the kits in terms of accuracy, assessed genotype concordance (weighted κ with 95% confidence intervals), and calculated Spearman's rho between semi-quantitatively measured EGFR-mutant levels (SQIs) measured by each kit. We also compared sensitivity using 47 EGFR-mutant harboring samples divided into more-dilute and less-dilute samples (dilution ratio: ≥ or <1:1,000). RESULTS: cobasv2 tended to have higher accuracy than Mutyper (73% vs 69%, P=0.53), and PE-SUP samples had significantly higher accuracy than plasma samples (97% vs 55–71%) for both kits. Genotype concordance was 98% (κ=0.92, 0.88–0.96). SQIs showed strong positive correlations (P<0.0001). In less-dilute samples, accuracy and sensitivity did not differ significantly between kits. In more-dilute samples, cobasv2 tended to have higher sensitivity than Mutyper (43% vs 20%, P=0.07). CONCLUSIONS: The kits have similar performance in terms of EGFR mutation detection and semi-quantification in plasma and PE-SUP samples. cobasv2 tends to outperform Mutyper in detecting less-abundant EGFR-mutants. PE-SUP samples are assayable using either kit.
Subject(s)
Epidermal Growth Factor , Genotype , Plasma , Pleural Effusion , ErbB ReceptorsABSTRACT
Objective To evaluate the intervention effect of iodine deficiency disorders (IDD) health education on primary students.Methods Using random cluster sampling,five towns were selected from five directions and a primary school was selected in every town in 2017.Health education was carried out to 1 505 students from grade 4 to grade 6.After 5 months intervention,the IDD awareness rate and the change in attitude were compared before and after the intervention.Results After the health education,IDD awareness rate and correct answer rate among students were all improved from 60.29％ (9 032/14 980),60.83％ (4 556/7 490) to 84.64％ (12 653/14 950),83.05％ (6 208/7 475),with statistically significant differences (x2 =2 221.33,915.01,P ＜ 0.01).Conclusion Health education and intervention is an effective measure to improve the knowledge level of the IDD prevention control among primary students in Cixi City.
ABSTRACT
Objective To understand the differences of brucellosis knowledge and prevention behavior before and after health education,and provide information for targeted health education of brucellosis.Methods Using a method of random cluster sampling,we did health education and behavioral intervention among professional people from January to June in 2016.Anonymous questionnaire was issued among professional people.Consulting knowledge about prevention and control of brucellosis questionnaire in Zhejiang Province to write our questionnaire,and questionnaire survey was conducted before and after the intervention.Results After the health education,the health knowledge rate,reasonable attitude rate and behavior related to brucellosis were all improved from 46.80％ (2 457/5 250),46.13％ (1 453/3 150),45.41％ (1 669/3 675) to 81.93％ (4 277/5 220),80.40％ (2 51813 132) and 67.43％ (2 464/3 654).The differences were statistically significandy before and after the intervention (x2 =902.17,132.11,198.78,P ＜ 0.01).The most popular ways to get knowledge among professional people were TV programme,lecture and handbook.Conclusion Health education is a effective measure in preventing brucellosis among professional people.
ABSTRACT
Objective:To investigate the expression of receptor for advanced glycation end products (RAGE)in the thyroid tissue of diabetes mellitus (DM)rats.Methods:The rat model of DM was established by high-lipid diet and vena caudalis injection of streptozocin.The rats of DM models were then randomly divided into three groups:DM group(n=17),insulin intervention group(n=16)and aminoguanidine intervention group(n=16).Nine normal rats were taken as controls.Twelve weeks after the establishment of DM model,rats were sacrificed and the thyroid tissue was taken to determine RAGE mRNA and the protein expression with the method of RT-PCR and Western Blot.Results:The levels of RAGE mRNA and protein expression were higher in the thyroid tissue of DM rats than those in controls (P＜0.05).The levels of RAGE mRNA and protein expression were lower in the thyroid tissue of insulin intervention group and aminoguanidine intervention group than thor of DM group (P＜0.05).Conclusion:The levels of RAGE mRNA and protein expression were up-regulated in the thyroid tissue of DM rats,which can be restrained by controlling blood glucose and blocking the formation of advanced glycation end products.
ABSTRACT
Objective To investigate the thyroid ultrastructural pathological changes of diabetes mellitus (DM) rats as well as the intervention effects of insulin and aminoguanidine. Methods Totally 87 rats were treated with streptozotocin to establish DM animal models and divided into DM group(n=27),insulin intervention group(n=32) and aminoguanidine intervention group(n=28),25 rats were taken as normal controls. Twelve and 20 weeks after the animal model establishment, animals were sacrificed, thyroid tissue was taken and ultrastructure was observed. Results In the thyroid of DM rats, follicular epithelial cells present as applanate shape, microvilli were depleted, rough endoplasmic reticulum dilated to irregular vesicular. None pinocytotic vacuole and casual primary or secondary lysosome were seen. Follicular cavity was dilated, colloid in the cavity had higher electronic-density. Interstitial edema, capillary base lamian was thickened at different stage. Proteo-substance deposition with granulo-shape, cloud shape or homogeneity appeared. The number of thyroid parafollicular cells increased. But endocrine granule in parafollicular cells was few. When compared with DM group, the thyroid tissue injury of insulin intervention group and aminoguanidine intervention group were lessened to different degree. Conclusion The hypofunctional thyroid follicular cells, large quantity of proteo-substance deposition in the interstitium and increased parafollicular cells of DM rats may be related with hyperglycemia toxicity. Insulin and aminoguanidine treatment have some protection effects.