1.Relationship between subclinical cervical human papillomavirus (HPV) infection and recurrence of condyloma acuminatum in patients
Hong LUAN ; Liya JIANG ; Xianmin MENG
Chinese Journal of Dermatology 2011;44(5):356-357
Objective To investigate the relationship between subclinical cervical HPV infection and recurrence of condyloma acuminatum (CA) in patients. Methods Cervical swabs were collected from 52 patients with frequently recurrent CA, 55 patients with infrequently recurrent CA, and 65 normal human controls. The Cenechip method was performed to detect the presence and type of HPV in cervical swabs followed by a statistical analysis. Results HPV was found in 67.3% (35/52) of swabs from patients with frequently recurrent CA, 5% (19/55) from patients with infrequently recurrent CA, and 4.6% (3/65) in the controls. There was a statistical difference among the three groups in the detection rate of HPV. Conclusion The subclinical cervical HPV infection may contribute to the recurrence of CA.
2.Effects of interleukin-17 on human laryngeal carcinoma Hep-2 cells
Shu FENG ; Junfu WANG ; Xuemei CHEN ; Junwen LUAN ; Qinghong SU ; Meng LUAN ; Xiaoqun XU
Journal of International Oncology 2017;44(4):241-245
Objective To investigate the effects of interleukin-17 (IL-17) on the cell proliferation, apoptosis and migration of human laryngeal carcinoma Hep-2 cells.Methods IL-17 was transiently transfected into Hep-2 cells, and at the same time empty vector group (pEGFP-N1) and normal control group were set up.The efficiency of transfection was evaluated by fluorescence microscope, and the mRNA and protein expressions of IL-17 were detected by reverse transcription-polymerase chain reaction (RT-PCR) and Western blotting.The proliferation of cells was detected by methyl thiazolyl tetrazolium (MTT) method, and the apoptosis was detected by flow cytometry.The migration ability was detected by wound-healing assay and Transwell assay.ResultsHep-2 cells transfected with empty vector pEGFP-N1 and IL-17 showed green fluorescence under the fluorescence microscope.Hep-2 cells expressed IL-17 at both mRNA and protein levels after transfection with IL-17.Compared with the normal control group, the proliferation of IL-17 transfected Hep-2 cells was significantly inhibited after 48 h transfection (0.34±0.03 vs.0.46±0.04, P=0.006).The apoptotic rate of IL-17 transfected cells was higher than that of normal control group (26.80%±0.80% vs.2.90%±0.31%, P=0.000).According to the wound-healing assay, compared with the normal control group, the scratch width of IL-17 transfected cells was significantly greater (1.59±0.01 vs.1.36±0.01, P=0.000).Transwell migration experiment showed that the migration of IL-17 transfected cells was significantly lower than that of the normal control group (26.33±2.08 vs.49.33±1.53, P=0.000).Conclusion IL-17 can inhibit the proliferation of human laryngeal carcinoma Hep-2 cells, reduce their migration ability and enhance their apoptosis ability.Therefore, IL-17 may inhibit the occurrence and development of laryngeal carcinoma through a variety of mechanisms.
3.Value of RDW for predicting death risk in acute pancreatitis and its correlation with Ret parameters
Xingwei LUAN ; Meng HUANG ; Meiling SUN ; Fei HUANG ; Jiajin YANG
International Journal of Laboratory Medicine 2017;38(4):439-441
Objective To investigate the value of RDW for predicting death risk in the patients with acute pancreatitis (AP) and its correlation with the Ret parameters.Methods A total of 164 patients with AP in the emergency surgery of Second Xiangya Hospital of Central South University from March 2015 to May 2015 were selected ,including 151 survival cases and 13 death cases , and other 175 healthy people were selected as the control group.The venous blood was collected for detecting whole blood RDW and Ret parameters by using the Sysmex XN-1000 automatic blood analyzer.The inter-group comparison was performed by Mann-Whitney U and Kruskal-Wallis H tests ;the diagnostic value of RDW for AP death risk was evaluated by receiver operating charac-teristic(ROC) curve and area under curve(AUC).Results The RDW level in the AP death group was[15.7% (14.1% -21.8% )] , which was significantly higher than that of AP survive group [13.3% (12.7% -14.5% )] ,the difference was statistically significant (Z=40.02 ,P<0.05);AUC of RDW ROC curve for diagnosing death risk was 0.835(95% CI:0.786-0.951);With the cutoff val-ue of RDW for diagnosing the AP death risk as ≥14.5% ,the sensitivity was 71.43% (95% CI:41.90% -91.60% )and specificity was 89.40% (95% CI:83.40% -93.80% );the RDW level of AP patients was positively correlated with Ret% ,IFR ,MFR and HFR(r=0.376 ,0.502 ,0.468 ,0.475 ,P<0.01) ,and was negatively correlated with LFR (r= -0.502 ,P<0.01).Conclusion The RDW level is a good indicator for early predicting AP death risk ,its elevated degree is closely correlated with Ret generation.
4.Localization of genetic susceptibility loci for bipolar disorder on chromosome 20 in Shandong peninsular
Meng LUAN ; Shanshan SHI ; Xing CHEN ; Peng ZHOU ; Xuerun CHANG ; Yuanxun WANG ; Gang CHEN
Chinese Journal of Nervous and Mental Diseases 2014;(12):736-740
Objective To identify the genetic loci associated with bipolar disorder in Chinese population by the ge?nome scan on chromosome 20 in bipolar disorder patients and healthy people from Shandong peninsula. Method Geno?typing was conducted on DNA pool samples of 104 bipolar disorder patients and 1000 controls using thirteen microsatel?lite markers on chromosome 20 spaced at intervals of approximately 10 cM and GeneMapper 4.0 software. CLUMP soft?ware was used to analyze multiallelic markers. Result Significant difference of allele frequencies was found at marker D20S186 (20p12.2) between patients and controls (P=0.022). Conclusion The data suggest that the D20S186 locus (20p12.2) is significantly associated with susceptibility to bipolar disorder in a Chinese Han population in Shandong pen?insula. Future studies should focus on the fine mapping of this region and assessment of candidate genes.
5.The clinical and EEG features and mutation analysisin a Chinese patient with severe hypoplasia of the cerebellum and pons
Meng-Yang Wang ; Xing-Zhou Liu ; Jing Wang ; Guo-Ming Luan
Neurology Asia 2014;19(3):319-322
We report here a Chinese female infant with severe hypoplasia of the cerebellum and pons, and
heterozygous mutation (c.18G >T, p.E6D) in the TSEN54 gene. This mutation was not present in her
parents and the 100 Chinese controls, which proved to be a de novo missense mutation. MR imaging
of the patient revealed severe hypoplasia of the bilateral cerebellar hemispheres and vermis with
moderate flattening of the pons. A video EEG during hospitalization demostrated abnormal background
activities and generalized burst and attenuation patterns during interictal stage. The spasms and tonic
spasms occurred frequently in clusters with generalized voltage attenuation.
6.Screening of candidate molecules interacting with protein kinase Wee1B from human ovary cDNA library and its regulation effect
Chao LIU ; Lili REN ; Zhidong LUAN ; Zhichao MENG ; Yimeng LIU ; Jianying XIAO
Journal of Jilin University(Medicine Edition) 2016;42(5):866-871
Objective:To screen the new candidate molecules interacting with protein kinase Wee1B by yeast two hybrid system, and to analyze their interaction with Wee1B in the early stage of mouse fertilized eggs by bioinformatics.Methods:The plasmid pcDNA3.1/V5-His-TOPO-Wee1B wild type encoding mouse Wee1B gene was used as template to construct bait plasmid pGBKT7 Wee1B and the bait plasmid pGBKT7-Wee1B was transformed into yeast competent cells at SD/Trp (SDO),SD/Trp/X-α-Gal (SDO/X)and SD/Trp/X α Gal/AbA plates (SDO/X/A)plates to detect the toxicity and self-activation ability of yeast and its expression in yeast using Western blotting method.The yeast cells containing pGBKT7-Wee1B were fused with human ovary cDNA library, the yeast plasmid transformation of Escherichia coli positive clones were sequenced after identified by yeast transformation.BLAST analysis was carried out in GenBank,and its effect on the development of mouse fertilized eggs was deduced according to the gene annotation.Results:The double enzyme digestion analysis and sequencing analysis results showed that the pGBKT7-Wee1B bait plasmid was successfully constructed.The plasmid was transformed into the yeast,and there were no clones in the SDO/X/A plates.The pGBKT7-Wee1B and pGBKT7 empty vectors were transformed into the yeast,the bacteria were inoculated on the SDO plates,and the clones were uniformly grown on the two SDO plates.The positive clones were picked and expanded in culture,the protein was extracted and Western blotting showed that pGBKT7 Wee1B was expressed in the yeast.The bait plasmids were fused with human ovary cDNA library and the positive clones inserted into the fragment were identified by PCR. Nine proteins which interacted with Wee1B protein kinase were screened out by sequencing and blast analysis,and the proteins which could be closely related to the development of mouse oocytes and the development of fertilized eggs were analyzed by bioinformatics analysis.Conclusion:Using the yeast two hybrid system from human ovary cDNA library,nine interacting proteins with Wee1B protein kinase are screened and these screened proteins may regulate mouse oocyte maturation and early embryo development through interacting with Wee1B.
7.Analysis on ADR monitoring of Chinese medical institutions based-on bibliometric
Lei MENG ; Zhipeng LUAN ; Wengong CHU
Journal of Pharmaceutical Practice 2016;34(3):227-231
Objective To discuss the development of ADR monitoring in Chinese medical institutions by the bibliomet-rics .Methods Literatures from CNKI .net ,VIP and Wanfang Database were retrieved ,then to compliant literatures were screened according to inclusion requirements ,and the bibliometric indicators were used to analyze by bibliometric metrology . Results 4079 literatures were screened compliantly .The trend in the annual number of literatures about medical institutions ADR reports was overall upward 1990-2015 .Top 20 of journals covered for 54 .55% of all papers analyzing ADR reports . Distribution of journals published ADR literatures publication showed significant Bradford features .The top six provinces pub-lished cumulative amount ratio close to 50% ,which showed regional distribution of literature .The proportion of published lit-eratures from medical institutions in the prefecture-level cities was the largest (50 .87% ) ,the average of literatures amount in the capital cities was largest ,5 mulriple of the county cities .Pharmacists were the main author group of writing papers which analyzing medical institutions ADR reports ,accounting for 87 .01% .Conclusion The changes in the annual number of litera-tures which analyzed medical institutions ADR reports could reflect the development process of ADR monitoring in China .The level of ADR monitoring research was related to the level of regional economic development .
8.Reference intervals for plasma presepsin in healthy elderly adults
Zhaotao ZHANG ; Xiaoping LIU ; Meng HUANG ; Xingwei LUAN ; Jiajin YANG
International Journal of Laboratory Medicine 2017;38(18):2529-2531
Objective To establish the reference intervals(RIs) for plasma presepsin in healthy population.Methods The document C28-A3 issued by CLSI was a guideline about how to define,establish,and verify reference intervals in the clinical laboratory.Plasma values were determined with CLEIA for 1 250 healthy adults(aged 20-90 years old),including 624 males and 626 females.The central 95 percentile of RIs were determined using nonparametric statistical methods.Results The presepsin values in elderly population showed a Gaussian distribution and age/sex related changes.The RIs for plasma presepsin in the reference population respective of age(ranged from 20-<30,30-< 60,60-< 90 years) were 50-195,47-170,41-142 pg/mL for males and 43-173,44-162,38-137 pg/mL for females respectively.Conclusion The RIs for plasma presepsin were established according to the gender and age groups in the healthy adults,and could provide a reference for the clinical and laboratory.
9.A screen for genetic loci associated with bipolar disorder on chromosome 4
Meng LUAN ; Jian TANG ; Peng ZHOU ; Xuerun CHANG ; Yuanxun WANG ; Shulin YANG ; Xing CHEN ; Wenmin LIU ; Wentian FAN ; Gang CHEN
Chinese Journal of Behavioral Medicine and Brain Science 2010;19(11):961-963
Objective To find out association mapping of loci related to bipolar disorder on chromosome 4 with microsatellite markers in DNA pooling samples from bipolar disorder cases and normal controls in Shandong province. Methods A total of 22 microsatellite markers on chromosome 4 spaced at approximately 10 cM were selected and two separated DNA pooling samples consisting of 104 bipolar disorder cases and 1000 normal controls were genotyped respectively. Statistic analysis was performed by Chi-square method with CLUMP software to compare the difference in the ratio of each allele in these loci between the two pooling samples. Result Significant statistic differences were found at D4S1592 and D4S402 on chromosome 4 between cases and controls(P<0.01 ).( D4S1592:x2 = 15.968, P=0.006; D4S402:x2 =31.553, P=0.002). Conclusion The loci of D4S1592 and D4S402 on chromosome 4 are found to be associated with bipolar disorder patients in Shandong province, further screening of the susceptibility genes around these loci is needed.
10.Isolation and identification of three Marek's disease virus strains and sequence comparison of genes involved in pathogenesis
Yingnan LIU ; Fanfeng MENG ; Yang LI ; Peng SUN ; Huaibiao LUAN ; Hongqin SU ; He CUI ; Shuang CHANG ; Peng ZHAO ; Zhizhong CUI
Chinese Journal of Veterinary Science 2017;37(8):1479-1484,1500
To understand epidemiological characteristics of Marek's disease virus (MDV) prevalent in china currently,3 Marek's disease (MD) strains were isolated and identified from white feather meat chickens vaccined with MDV CVI988 or 814 through necropsy,histopathological observation,virus isolation and IFA detection,named SDAU1501,SDAU1502 and SDAU1503,respectively.vIL8,pp38,MEQ gene of the three strains of MDV were amplified using PCR,and compared with reference strains.The homology between SDAU1501 and SDAU1502 and virulent strains was above 97%,suggesting some features of virulent strains;while meq gene of SDAU1503 lost P amino acid at the 194 th site as that in CVI988,But the distinctive 177 nucleotide insertion mutations was not existed,predicting that it may be a attenuated vaccine strain.New variations of MDV continued and different types of variants emerged,therefore,prevalence and genetic monitoring of MD should be proceeded;meanwhile,more attentions should be given to MDV vaccine development.