Purpose To explore the clinicopathological features,immunophenotype,differential diagnosis and prognosis of the composite pheochromocytoma (CP)-ganglioneuroma.Methods 3 cases of CP-ganglioneuroma were stained by immunohistochemical SP method,and the related literatures were reviewed.Results 3 cases of CP-ganglioneuroma were one male and 2 females,the age were 37-64.Case 3 were of primary mediastinal.Microscopically,the tumor tissues were composed of two components:one type of tumor cells were arranged in nests with a predominant Zellballen pattern,round or oval nuclei,fine granular cytoplasm and rare mitotic,another part of the neoplasm showed scattered and aggregated distributed ganglion cells in the background of neurofibromatosis which aligned bundles and interwoven,the edge of the tumor was still residual adrenal tissue.Immunohistochemically,components of pheochromocytoma were positive for CD56,CgA,Syn,vimentin and negative for SMA,Melan-A,α-inhibin NF with low Ki-67 proliferation index.S-100 was positive in supporting cells,ganglioneuroma components were positive for NF,S-100 with low Ki-67 proliferation index.CgA and Syn were weakly positive or negative in the ganglion cells.Conclusion CP is a relatively rare tumor,which can not be distinguished from pheochromocytoma in clinical and radiological diagnosis.The corresponding clinical treatment and follow-up management should be taken according to the different ingredients (benign or malignant).

Objective:To explore the vailation of serum sP-selectin,sE-selectin,levels in the patients of pre-diabetic,simple type 2 diabetes mellitus (T2DM) and T2DM with coronary heartdisease(CAD).To investigate the possible mechanism that sP-selectin, sE-selectin accelerate type 2 diabetes mellitus.Methods: Level of serum sP-selectin, sE-selectin was assayed by ELISA in type 2 diabetes with or without coronary heart disease (32 and 34 cases respectively),pre-diabetic (32 cases) and control group(32 cases). Meanwhile BMI,BP,FBS,FINS,TG,CHO,HDL-C,LDL-C,HbA1C were determined in all cases as well as in control group.Results:The serum levels of sP-selectin and sE-selectin in pre-diabetic,type 2 diabetes mellitus with or without coronary heart disease groups were significantly higher than the control group ( P<0.01 ).There was significant positive correlation between serum levels of sP-selectin,sE-selectin and these items including FBG ,FINS,TG,HbA1C,HOMA-IR(P<0.01);but sE-selectin was negatively correlated with HDL-C (P<0.05).Conclusion:sP-selectin,sE-selectin,are risk factors in the initiation and progression of pre-diabetic,type 2 diabetes with or without coronary heart disease;sP-selectin and sE-selectin possibly accelerate type 2 diabetes by inducing insulin resist-ance.

In recent years,stem cell research has been developing quickly in biological science.As the key of regenerative medicine,stem cell therapy becomes another innovative treatment following drug therapy and surgery.In vivo stem cell tracking,including optical imaging,radionuclide imaging and MRI,can trace the viability,distribution and function of engrafted cells.Multimodal imaging integrates two or more types of imaging techniques to obtain the combined advantages of each technology,and therefore is able to accurately and effectively trace stem cell in vivo,hopefully promoting its clinical transformation.This paper reviews the application of multimodal imaging in stem cell research.

To deepen the teaching reform on comprehensive medical function experiment in our school,the mode of opening system of experiment teaching of medical function is proposed.The definition and characteristics of the opening system is discussed in this paper,and its theoretical foundation,guideline,goal location,effect and pending problems are also explored preliminarily.

Objective To analyze the genotype-phenotype correlations of Angelman syndrome ( AS ) , and to discuss the advantage of applying array-based single nucleotide polymorphisms comparative genomic hybridization ( SNP aCGH) in diagnosis of AS. Methods Examination of electroencephalogram( EEG) and intelligence quotient( IQ) evaluation were done for 11 cases diagnosed as AS clinically. Gesell scares were chosen as the evaluation criterion of IQ. The screening techniques was methylation polymerase chain reaction( MS-PCR) ,then SNP aCGH was used to make genetic diagnosis. Results (1)Eleven cases of AS were confirmed:1 case had UPD(uniparental disomy),10 cases were type of deletion, from which 6 cases were deletion (Ⅱ) , 4 cases were deletion (Ⅰ) . ( 2 ) The copy number variations were detected in the region of 15q11-q13,which contained genes like MKRN3,MAGEL2,NDN,SNRPN, SNURF,GABRB3,GABRA5,GABRG3,UBE3A,OCA2,ATP10A. To search online Mendelian inheritance in man,genes above were correlated with AS manifestation. (3)All cases of deletion were 3-5 standard deviation(SD) in weight and height to normal children at the same age and with the same sex,while UPD was below 1. 5 SD. Gesell scares showed that the deletion(Ⅰ) was the most serious in mental retardation,deletion(Ⅱ) was moderate,and the UPD was mild. Eight cases were hypopigmentation,and one was the UPD. EEG revealed that 1 case of deletion(Ⅰ) and the UPD were spike occasionally,another one deletion(Ⅰ) was limit EEG. The rest cases displayed slow and spike waves paroxysmal-ly,with amplitude of medium or high,2. 5-3. 0 Hz. Conclusions Not only can SNP aCGH make a diagnosis of AS but discriminate the types of genetic pathology. Since different type contributes to a diverse of clinical features and the rate of recurrence is also different,it is significant for family genetic consultation. Moreover,the technology is advantageous for the study on the pathogenesis and gene function.

Objective By using array-based single nucleotide polymorphisms comparative genomic hybridization (SNP-aCGH) to detect and fine mapping copy number variations (CNVs) in children with unexplained mental retardation/brain development delay(MR/BD),then the CNVs were analyzed to determine diagnosis and offer genetic counseling,finally to discuss the application of SNP-aCGH in genetic diagnosis of MR/BD with unknown causes.Methods Ninety-two children with unexplained MR/BD were recruited.SNP-aCGH was used to get CNVs from the whole genome-wide,and the correlation of CNVs and phenotype was analyzed to definit disease genes or pathogenic fragment.Statistics was performed to analyze the common phenotype between positive cases (case with CNVs) and negative cases.Results (1) The CNVs were detected in 10 cases with a detection rate of 10.86％,from which 8 cases showed subtelomeric aberration,5 cases without subtelomeric aberration,and the rate was 8.70％,5.40％,respectively.The CNVs related to MR/BD involved 10 different subtelomeric regions (9p,21q,3p,2p,15q,4p,12p,22q,16p,17p),and 7 different regions without subtelomeric (1p,4q,2p,14q,15q,12q,22q).The deletions involved 11 zones (size:1.05-8.80 Mb),and duplications referred to 8 zones (size:1.33-31.25 Mb).(2) One case was diagnosed as 9p duplication syndrome,for candidate genes:DOCK8,VLDLR.A case was detected with a gene fracture (CRBN).One case was diagnosed as Coffin-Sirrs syndrome combined with a deletion of 15q26.3-qter,for candidate genes:SOX11 and LINS1,respectively.One case referred to 12p13.3 deletion syndrome,for candidate genes:ELKS,ERC1.One case referred to 22q13.2-qter deletion,for candidate genes:SHANK3.Two cases were diagnosed as ATR-16 syndrome with 17p13.3 deletion syndrome,their candidate genes:HBA1,HBA2,SOX8 for the former,YWHAE,LIS1 for the latter.(3)There were statistically significant differences in comparison of positive cases to the negative ones for growth delay,internal organs deformity,low birth weight infant(LBW) and premature infant (all P ＜0.05).Conclusions (1) Besides MR/BD in different degrees in all the positive cases,they also showed growth delay,a portion of them with internal organs deformity,low birth weight infant and premature infant.(2) Subtelomeric aberrations are related to MR/BD,while the submicroscopic rearrangement in regions without subtelomeric is suspiciously pathogenic,and need to be further studied.(3) SNP-aCGH can fine mapping the region of CNVs by high resolution from the whole genome-wide,which does contribute to limit the zones for finding pathogenic region and candidate genes,as well as to offer a technology platform for investigating about the correlation of phenotype and genes or CNVs.

Objective To synthesize poly asparagine derivatives and to evaluate its safety at the cellular level, which provide research platform for its potential application as drug carrier. Methods Polysuccinimide was synthesized by ther?mal polymerization of L-polyaspartic acid, and the target product of PSI-Phe-EA was obtained by the ring-opening reaction of polysuccinimide using L-phenylalanine methyl ester hydrochloride and ethanol amine. The structure of PSI-Phe-EA were characterized by 1H NMR. The rate of ring-opening of PSI was calculated by internal standard method of 1H NMR. The change of hydrophilicity was studied by the comparison of solubility. The cytotoxicity and morphology modification by PSI-Phe-EA at designate concentrations was investigated by MTT method and inverted microscopy respectively. The effects on cell cycles were analyzed by flow cytometry after propidium iodide (PI) staining. Results 1H NMR results confirmed the structure of PSI-Phe-EA and the ring-openning rate of PSI was 40%. The hydrophilicity of PSI-Phe-EA was greatly in?creased upon ring opening using ethanol amine. MTT test showed that the cell survival rates of NIH 3T3 and HepG2 cells were higher than 80%under the examined concentration (<100 mg/L). Inverted microscopy showed that 50 mg/L of PSI-Phe-EA treatment had no adverse effects on cell morphology. Cell cycle analysis indicated that PSI-Phe-EA treatment had no in?fluence on cell cycles of NIH 3T3 and HepG2 cell lines. Conclusion PSI-Phe-EA showed high hydrophilicity without sig?nificant effects on the cells survival, cells morphology and cell cycles. It is a kind of safe polymer material.

Objective:To explore the role of cytokines in the pathogenesis of Graves′disease(GD),by detecting the levels of IFN-γ,IL-6,IL-17 and TGF-β1 in GD patients who were newly diagnosed.Methods:A total of 23 patients with new onset GD and 23 gender-and age-matched healthy controls were examined.The levels of serum IFN-γ, IL-6, IL-17 and TGF-β1 were measured by ELISA,FT3,FT4 and TSH levels were determined by ECL IA;TrAb levels were tested by RRA.Results: There were no significant difference among GD and NC group in sex and age match ( t=0.334 8 ,P>0.05;χ2=0.410 7 ,P>0.05 ).The levels of serum IFN-γ,IL-6,IL-17 and TGF-β1 in the GD group were significantly higher than the control group ( P<0.05 ) .Correlation analysis revealed that IFN-γ,IL-6,IL-17 and TGF-β1 were positively correlated with FT3,FT4(r=0.324 6,0.453 2,0.431 0,0.463 8;0.413 2,0.441 5, 0.436 2,0.467 1;P<0.05 ).Conclusion: IFN-γ, IL-6, IL-17 and TGF-β1 are highly expressed in the newly diagnosed GD patients.They play an important role in the pathogenesis of GD ,and provide helpful evaluation indices of immune dysfunction to Graves disease.

This study was aimed to show the extraction research of cpDNA in Gentiana straminea Maxim. and G. crassicaulis Duthie ex Burk., which will increase the knowledge about the chloroplast genome sequence characteris-tics, understand its genetic diversity and improve the efficiency of breeding schemes. G. straminea Maxim. and G. crassicaulis Duthie ex Burk. were taken as study objects. The improved sucrose-gradient centrifugation and purifica-tion methods were used to obtain the cpDNA, measure the concentration, detect the OD value, and amplify the ITS2 sequence to verify the nucleus pollution. The results showed that the high quality and purity cpDNA (0.1 - 0.4 μg/10 g) was demonstrated without other pollution after ITS2 sequence amplification, which met to the subsequent effi-cient sequencing of chloroplast genomes. The purity and mass have an important influence on the accuracy and cred-ibility of the cp genome sequencing. It was concluded that this study improved the sucrose-gradient centrifugation and purification with great effect of the purity and mass of cpDNA, and guaranteed the obtaining of complete cpDNA of Gentiana.

Objective To investigate the changes of cardiac function at pre -and post -treatment in preterm infants with patent ductus arteriosus (PDA)in order to guide drug treatment.Methods Totally 84 preterm infants with PDA admitted to Neonatal Intensive Care Unit of Xuzhou Hospital Affiliated to Medical College of Southeast University from July 201 2 to June 201 4 were divided into 4 groups according to treatment drug:Ibuprofen group (27 cases),Indo-methacin group (24 cases),control group (1 1 cases),and Paracetamol group (22 cases).Patients were also divided into symptomatic PDA group (38 cases)and asymptomatic PDA group (46 cases)according to severity;PDA closed group (69 cases)and PDA unclosed group (1 5 cases)according to sequel.The level of plasma brain natriuretic pep-tide (BNP),cardiac troponin I (cTnI),correct QT intervals dispersion (QTcd)were monitored pre -and post -treat-ment.Data were analyzed by using SPSS 1 9.0 software.Results Three cardiac markers at post -treatment were of no significant difference among 4 treatment drugs.The changes of the cTnI and QTcd at pre -and post -treatment were of no significance.The level of BNP in symptomatic PDA group was significantly higher than that in asymptomatic PDA group at pre -treatment [(378 ±94)ng/L vs (1 47 ±75)ng/L,t =2.584,P =0.01 4].In the symptomatic PDA group,the level of BNP at post -treatment [(1 82 ±81 )ng/L]was significantly decreased than that at per -treatment (t =2.741 ,P =0.009).In the asymptomatic PDA group,there was no significant difference between the pre - and post -treatment [(1 21 ±61 )ng/L]in the level of BNP (t =1 .254,P =0.207).There was no significant difference in the level of BNP at per -treatment between PDA closed group and PDA unclosed group [(274 ±91 )ng/L vs (289 ± 87)ng/L,t =-0.874,P =0.391 ].In PDA closed group,the level of BNP at post -treatment [(1 21 ±74)ng/L] was significantly decreased compared with that at per -treatment (t =3.580,P =0.000).In PDA unclosed group, there was no significant difference between the pre - and post -treatment [(245 ±74)ng/L]in the level of BNP (t =0.854,P =0.392).Conclusion Early medication intervention for symptomatic PDA of preterm infants is benefi-cial for the closure of PDA and for attenuating negative effects on cardiac function of PDA.