1.Detection of ERG11 mutations in clinical isolates of Candida albicans resistant to fluconazole
Yonghao XU ; Lamei CHEN ; Chunyang LI
Chinese Journal of Laboratory Medicine 2008;31(10):1119-1123
Objeetive To detect ERG11 gene mutations in clinical isolares of Candida albicans resistant to fluconazole.and discuss their relationship with formation of drug resistance.Methods Clinical specimens were collected.CHROMagar mediuln and amplification of the fragment spanning the conserved sequence of 25S rDNA including some transposable introns.were used to identify subtype Candida albicans isolates.FIuconazole sensitivity was detected in vitro through microdilution and Rosco tablets.The other three fragment of ERG11 gene were amplified and followed by sequencing with resistant type strain ATCC 76615-19 and Candida albicans Darlington strain with two sensitive isolates as controh.Results Fifteen resistant isolates of Candida albicans were found,all of which were type A.Sixteen silent mutations and 11 missense mutations were detected.Mutations in ATCC 76615-19 and Darlington strain were same with what had been reported.In the 2 sensitive strains.G640A(E165K),A945C(E266D)and G1609A/G(V488I)occurred,as well as the other 9 silent mutations.Only G487T(A114S)and T916C(Y257H)existed in each of 14 resistant isolates.In the other one resistant isolate,T541C(Y132H),T495A(D116E),A530C (K128T)and T1493A(F449Y)occurred Mong with 8 silent mutations.Conclusions The occurrence of G487T(A114S)and 1916C(Y257H)in 14 isolates from different sources suggested they may involve in fluconazole resistance.The novel mutation T1493A(F449Y)can appear in resistant isolves of Candida albicans.
2.Therapeutic effect of electronic moxibustion apparatus and stone needle for 35 cases with primary dysmenor- rhea disease
Lamei TAO ; Xue ZHOU ; Jin LU ; Junxue GAN ; Zhizhong RUAN ; Dake XU
Chinese Journal of Primary Medicine and Pharmacy 2015;(5):679-681
Objective To observe the therapeutic effect of electronic moxibustion apparatus and stone needle for primary dysmenorrhea disease in 35 cases.Methods 70 patients were randomly divided into the treatment group of 35 cases by random number table ,using electronic moxibustion apparatus and stone needle for treatment;and con-trol group of 35 cases,only using electronic moxibustion apparatus for treatment from 5 days before menstruation ,the treatment was continuous for 5 days,a course including 3 menstruation cycles .The clinical therapeutic effect after one treatment course was observed .Results The curative effects of the two groups were respectively 91.42% and 88.57%(χ2 =0.16,P>0.05);recovery rates of the two groups were respectively 77.14%and 42.85%(χ2 =8.57, P<0.05).The scores of the VAS,CMSS of the treatment group were much lower than those of the control group after treatment (t=2.532,2.137,2.256,P<0.05).Conclusion Electronic moxibustion apparatus and stone needle therapy is an effective method to treat primary dysmenorrhea ,which is a safe and convenient method .
3.Incidence of cholecystolithiasis and influencing factors in 1iver cirrhosis
Xiaomin LIU ; Ping WANG ; Hongyun WANG ; Lamei ZHANG ; Xin ZHOU ; Jinjin XU ; Yingjian ZHANG
The Journal of Practical Medicine 2016;32(19):3212-3215
Objective To investigate the incidence of cholecystolithiasis in 1iver cirrhosis and analyze its influencing factors and clinical significance. Methods We selected 128 patients with 1iver cirrhosis who were di-agnosed and treated in the First Affiliated Hospital of Henan University of Science and Technology from Oct. 2014 to Aug. 2015 as the observation group. Meanwhile, 140 cases received medical examination served as the control group. The liver cirrhosis group were divided into class A (group A), class B (group B), class C (group C) ac-cording to the Child-Pugh grades. We measured the levels of fasting serum albumin (ALB) and cholecystokinin (CCK) of all subjects. The relationship of cholecystolithiasis in 1iver cirrhosis to gender, liver function Child-Pugh classification, ascites, levels of ALB and CCK was analyzed. Results (1) Univariate analysis revealed: compared with the control group, the incidence of cholecystolithiasis in 1iver cirrhosis group was higher (35.2%vs 8.6%, P<0.05). With increase of the degree of liver damage, the incidence of cholecystolithiasis increased. And the incidence of cholecystolithiasis in group B and group C were both higher than that of group A (group A 22.9% vs group B 35.0%vs group C 50.0%, P<0.05). The incidence of cholecystolithiasis in the 1iver cirrhosis group with ascites was significantly higher than that of the control group (38.6% vs 22.2% vs 8.6%, P < 0.05). With increase of the degree of liver damage, the level of ALB in liver cirrhosis group decreased compared with the control group (P<0.05), while the level of CCK was obviously higher than that of the control group (P < 0.05). The morbidity rate did not differ between the males and females with cirrhosis (P>0.05). (2) Multiple Logistic regression analysis re-vealed that the level of ALB is the main influencing factor (P<0.05). Other factors were not statistically significant. Conclusion Cholecystolithiasis frequently occurs in patients with liver cirrhosis, which has no correlation with the gender of patient, but it correlates with liver function, ascites, the levels of ALB and CCK. Among of them, the level of ALB is the main influencing factor.
4.Application of DNA microarray in the identification of Candida spp. and mutations of ERG11 gene resulting in fluconazole resistance
Yonghao XU ; Keyu WANG ; Ying LI ; Lamei CHEN ; Ying SU ; Qing SUN ; Chunyang LI
Chinese Journal of Dermatology 2009;42(1):38-41
Objective To investigate the performance of DNA microarray in identifying 6 common Candida spp. and validating ERG11 mutations resulting in fluconazolc-resistance in Candida albicans. Methods Oligonucleotide probes were designed and synthesized targeting the species-specific sequence in the internal transcribed spacer 2 (ITS2) region of rDNA of Candida albicans, Candida tropicalis, Candida glabrata, Candida dubliniensis, Candida parapsilosis and Candida krusei, as well as 6 sequences embracing the following mutations respectively in ERG11 gene leading to fluconazole-resistance, i.c., T541C, A 1090G, C1361T, G1537A, G1547A, and T1559C, then arranged onto a chip. Twelve 50-base-pair oligonucleotides were artificially synthesized based on the above specific sequences, and utilized to hybridize with the DNA microarray. Thirty-lbur Candida strains, including 29 C. albicans, 1 Candida tropicalis, 1 Candida glabrata,1 Candida dubliniensis, 1 Candida parapsilosis and 1 Candida krusei, were detected with microarray. Genomic DNA was extracted from these tested strains and underwent multiple PCR for the amplification of ITS2 region and ERGI 1 gene. Sequencing was performed to analyze the sequence of ERG11 in 29 strains of C. albicans and the results were compared with those of DNA microarray hybridization. Results Multiple PCR successfully produced ITS2 fragment of 307-415 bp from all the 34 strains, as well as ERG11 fragment of 1712 bp from 29 C. albicans strains. DNA microarray hybridization offered the same results in species identification of the 34 strains with their given information, as well as in mutation detection of the 29 strains of C. albicans with ERG11 sequencing results. Also, the 6 synthesized oligonucleotides containing the muta- tions were identified precisely as T541C, A1090G, C1361T, G1537A, G1547A, and T1559C, and the 6 species specific oligonucleotieds were identified correctly as C. albicans, C. tropicalis, C. glabrata, C. dubliniensis, C. parapsilosis and C. krusei Both the sensitivity and the specificity of the microarray were 100%. Conclu- sion DNA microarray is a quite reliable method to identify Candida spp. and fluconazole resistance-associ- ated mutations in the ERG11 gene of C. albicans.
5.Genotype of CTX-M-type extended-spectrum beta-lactamases by denaturing high-performance liquid chromatography
Huili DUAN ; Wenen LIU ; Lamei CHEN ; Hongling LI ; Jun PAN ; Mingxiang ZOU ; Li XU
Chinese Journal of Laboratory Medicine 2009;32(6):678-682
Objective To investigate the genotype distribution of CTX-M-type extended-spectrum β-1actamase(ESBLs) by denaturing high-performance liquid chromatography(DHPLC) in Hunan Province and the accuracy of DHPLC assay. Methods The blaCTX-M genes of standard strains and clinical ESBLs-producing Enterobacteriaceae were amplified by multiplex PCR followed by DHPLC and genotype determination. 25 isolates randomly selected were sequenced to assess the accuracy of DHPLC method. Results Among 142 ESBLs-producing isolates, 109 isolates carried blaCTX-M gene (76. 8% ). Four different CTX-M genotypes were detected by DHPLC, including CTX-M-3 (33 isolates), CTX-M-15 (19 isolates), CTX-M-14 (52 isolates) and CTX-M-9 (5 isolates). The DHPLC typing of 25 isolates suggested that 24 isolates were verified uniformly by the sequencing, but one CTX-M-15 isolate typed by DHPLC was shown to be CTX-M-82 by sequencing. Conclusion DHPLC is a powerful tool for genotyping of the resistance gene and is worth being applied in the clinical and scientific research with accurate, rapid and economic advantages.
6.Effect of supportive-expressive group therapy on alexithymia in lung cancer patients receiving chemotherapy
Feifei GUO ; Qiufang LI ; Qiuge WU ; Rui XU ; Lamei LIU ; Maoni ZHAO
Chinese Journal of Behavioral Medicine and Brain Science 2020;29(4):361-367
Objective:To explore the effect of supportive-expressive group therapy (SEGT) on alexithymia in patients with lung cancer.Methods:Totally 62 lung cancer patients were divided into control group( n=30) and intervention group( n=32) by coin flipping method.The intervention group received 6-week supportive-expressive group therapy and the intervention path was improved by action research method.There was no special intervention in the control group.The Toronto alexithymia scale (TAS-20) and hospital anxiety and depression scale (HADS) were used for measurement, and statistical analysis was carried out by SPSS 21.0. Results:The emotional recognition disorder (Wald groupχ 2=6.055, Wald interactionχ 2=15.157), emotional description disorder (Wald groupχ 2=5.736, Wald interactionχ 2=28.912), TAS-20 (Wald groupχ 2=7.181, Wald interactionχ 2=28.126), anxiety (Wald groupχ 2=4.905, Wald interactionχ 2=30.491), depression (Wald groupχ 2=9.580, Wald interactionχ 2=29.417) and HADA (Wald groupχ 2=8.140, Wald interactionχ 2=47.851) had significant group effect and interaction effect at the pre-test, post-test and 1 month after intervention(all P<0.05). There was no significant group effect in extroverted thinking (Wald groupχ 2=1.161, P>0.05), but the time effect (Wald timeχ 2=6.381, P<0.05) and the interaction effect (Wald interactionχ 2=6.339, P<0.05) were significant in the three time points.The group effect of emotional recognition disorder, emotional description disorder, TAS-20, anxiety, depression and HADA score at completed intervention and 1 month after intervention were significant(all P<0.05). Compared with before intervention, TAS-20((52.94±4.77) , (52.06±4.07)), emotional recognition disorder((17.72±2.23) , (17.78±1.64)), emotional description disorder((13.44±1.94) , (13.41±1.79)), HADA((14.41±2.63) , (13.75±2.97)), anxiety ((7.03±1.64), (6.84±1.51)), depression ((7.38±1.45) , (6.91±1.75) ) at completed intervention and 1 month after intervention decreased ( P<0.05), while the HADS of control group only decreased at completed intervention ( P<0.05). Conclusion:SEGT can reduce alexithymia in lung cancer receiving chemotherapy, and this intervention has positive effect on improving anxiety and depression in lung cancer patients received chemotherapy who are accompanied with emotional cognitive impairment and emotional somatic symptom recognition disorder.
7.Nutrition-related influencing factors of myopia among adolescents in Zhengding County, Shijiazhuang City
Yi YOU ; Fangfang LIU ; Hongyu QIN ; Lamei XU ; Ran JING ; Shuqing GAO
Chinese Journal of Child Health Care 2024;32(4):395-400
【Objective】 To analyze nutrition-related factors that affect the prevalence of myopia in adolescents, in order to provide reference for primary prevention of myopia. 【Methods】 A stratified sampling method was used to select 385 adolescents from Zhengding County in October 2021. Adolescents in this study took vision testing, physical examination and completed a questionnaire survey. One-way analysis of variance and lasso regression were used to screen the variables, and Logistic regression was used to determine the possible influencing factors of myopia. Factor analysis was adopted to extract the dietary patterns of adolescents in Zhengding County, then the association between dietary patterns and myopia was analyzed. 【Results】 A total of 385 adolescents were surveyed, with the prevalence rate of myopia of about 68.6%. Multivariate analysis revealed that fried food(OR=8.480, 95%CI:1.058 - 67.971) was a risk factor for myopia, while intake of milk and dairy products(OR=0.994, 95%CI:0.991 - 0.999), soybeans and nuts(OR=0.997, 95%CI:0.994 - 0.999), no myopia in either parent(OR=0.312, 95%CI:0.115 - 0.845), physical education class 4 times per week(OR=0.269, 95%CI:0.074 - 0.984) were statistically associated with a lower risk of myopia(P<0.05). Three dietary patterns was extracted through factor analysis, including diversified dietary pattern, soy-hybrid dietary pattern, and snack and beverage dietary pattern. Logistic analysis results indicated that soy-hybrid dietary pattern(OR=0.85, 95%CI:0.73 - 0.99,P<0.05) was statistically associated with myopia. 【Conclusions】 The problem of myopia among adolescents in Zhengding County is more serious. Increasing the intake of milk and dairy products, soybeans and nuts, reducing the intake of fried foods, and adjusting the overall dietary structure should be recommended in order to prevent the development of myopia in adolescents.