Objective To investigate the expressions of stern cell markers CD133,nestin and CD44 in malignant melanoma and their significance.Methods Tissue samples were obtained from 30 patients with malignant melanoma and 30 patients with intradermal nevus.The expressions of three markers were immunohistochemically detected in the samples.Results In malignant melanoma specimens,the expression rate of CD133,nestin and CD44 was 53.33%(16/30),80.00%(24/30)and 20.00%(6/30),respectively,significantly difierent from that in intradermal nevus specimens [23.33%(7/30),53.33%(1 6/30)and 0,respectively,all P＜0.05].The percentage of cells positive for CD133,nestin and CD44 was 2.98%±5.62%,34.92%±34.89%and 1.28%±3.26%,respectively,in malignant melanoma specimens.0.10%±0.21%,7.26%±13.13%and 0,respectively,in intradermal nevus specimens;there was a significant difierence between the two groups of specimens(all P＜0.05).In malignant melanoma and intradermal nevus,the expression intensity of CD133.nestin and CD44 showed no significant correlation with patients'sex.age or disease course(all P＞0.05).ConclusionsCD133,nestin and CD44 are highly expressed in malignant melanoma,but weakly expressed or absent in intradermal nevus,suggesting that tumor stem cells might exist in malignant melanoma tissue.

Acute Disease ; Autonomic Nervous System Diseases ; Child ; Humans ; Male

Ebola virus-related papers covered in PubMed and CNKI were analyzed by co-occurrence and cluster analysis, respectively. The current situation in research of Ebola virus in China and foreign countries was com-pared. Some suggestions were proposed for research of Ebola virus in China, such as attaching importance to re-search of Ebola virus, enforcing research of its vaccine,and strengthening cooperation between domestic and foreign scholars.

Objective To retrospectively analyze the prognostic factors of advanced esophageal carcinoma (EPC) with concurrent chemoradiotherapy.Methods A total of 200 advanced EPC patients between January 2008 and December 2011 were reviewed,and all of them received concurrent chemoradiotherapy,either IMRT or CRT.Among them,there were 92 and 108 patients in the IMRT and CRT group,respectively.The chemotherapy scheme was paclitaxel combined with different platinum drugs (cisplatin,nedaplatin,oxaliplatin or lobaplatin).The number of chemotherapy cycles was 2-4.Results Patients who received IMRT had a significant higher 3-year overall survival (OS) than that who received CRT (63.6 ％ vs 38.9 ％,x2 =12.102,P =0.001).Three-year OS differed no significantly between different chemotherapy regimens.There were 44.6 ％,57.5 ％,52.5 ％ and 52.5 ％ for those who received cisplatin,nedaplatin,oxaliplatin and lobaplatin,respectively (x2 =2.756,P =0.431).Patients received different cycles of chemotherapy had comparable treatment outcome,and the overall survival were 44.1％,51.6 ％ and 57.4 ％ for those who underwent 2,3 and 4 chemotherapy cycles at 3 years,without any statistical significance (x2 =2.497,P =0.287).Univariate analysis indicated that lesion length on X-ray,M stage,6th edition UICC staging and radiotherapy methods were the potential predictive factors.Multivariate analysis shown that gender,lesion length on X-ray and radiotherapy methods were the significant prognostic factors.Conclusion The significant prognostic factors for advanced EPC with concurrent chemoradiotherapy are mainly lesion length on X-ray and radiotherapy methods.

In this paper,adverse drug reaction(ADRs)of two groups using ionic contrast media(ICM)and nonionic contrast media(NICM)respectively for conventional an- giography(CA),DSA and contrast enhanced CT(CTE)were analysed and compared with the recent literature. The results of this study indicated that(1)using ICM for CA,DSA and CTE,the in- cidence of ADRs is higher than that of NICM because of its high osmolarity,the effect of electric charge and chemotoxicity;however,even in the at-risk patients the incidence of ADRs; can be significantly decreased by using NICM.(2)the incidence of ADRs in patients with rapidly intraarterial injection is higher than that of intravenous injection;(3)the patients with ADRs to ICM previously could be reexamined by using NICM without inducing the ADRs (4)using lower concentration or/and volume of NICM than that of ICM may obtain superior images than the equivalent ICM because of the little influence of NICM on the plasma volume and the concentration of intravascular contrast midia;and(5)though NICM is surely a safe and ideal contrast midia,it still must be careful to use in at-risk patients. Because of its high cost limiting its universal use,a selective use in at-risk patients for the intavenous examinations is proposed by us.Excluding the usual high risk factors describ- ed in literature,we suggested that if the patients with the following factors,NICM should be the preferred choice for the angiography and CTE:(1)the post-operative patients of biain disease;(2)the patients with coma or shock;(3)the patients with peripheral aterial of ve- nous thrombosis and(4)the patients for interventional procedures of cardioascutlar system (CVIR). In addition to,the authors pointed out that some new problems concerning with the con- trast media(CM)must be noticed in the procedures of CVIR:the overdose of CM,he ad- verse effects resulted from the mixing of CM with other pharmaceutical products injected and the evaporated hyperc oncentatian decomposition,or carbonization of the CM resulted from the interaction within high energy equipment or under high temperature.

Objective To investigate clinieopathologic characteristics and therapy of local advanced welldifferentiated thyroid carcinoma.Methods Data of 23 cases of advanced well-differentiated thyroid carcinoma treated from Jan.1996 to Dec.2005 were retrospectively reviewed.The data included age,pathologic type,local invasion,operative plan,postoperative complications and survival duration.Results Histology showed there were 15 cases of papillary carcinoma,6 ca8es of follicular carcinoma,and 2 cases of papiIlary follicular carcinoma.8 cases had local invasion into recurrent laryngeal nerve,12 cases had invasion into trachea,3 cases had trachea and esophagus invasion,and 8 cases had suprahyoid muscle invasion.All the 23 cases underwent resection procedure.According to surgical procedure,they were divided into radical resection group(n=6),tumor resection group(n=14)and tumor debulking group(n=3).2 cases received radiotherapy after thyroidectomy in tumor debulking group.All patients were followed up.Overall survival rate after 1 year,3 years and 5 years Was 91.3%(21/23),82.6%(19/23),and 60.8%(14/23)respectively.Prognosis of radical tumor removal group and tumor resection group was obviously better than that of tumor debulking group.Conclusions Prognosis is good for local advanced well-differentiated thyroid carcinoma patients receiving resection.Protection of local organ function Can enhance postoperative life quality.

Objective To evaluate the short-term therapeutic effect and radiation reaction of stereotactic radiotherapy for early stage non-small cell lung cancer in the elderly patients. Methods Thirty-one patients with stage Ⅰ - Ⅱ non-small cell lung cancer were treated with stereotactic radiotherapy. Patients aged 70-88 years, median age 76; 21 were stage I patients, and 10 stage Ⅱ ; 14 patients had tumor

Fatty acids of Ralstonia solanacearum cultured under different temperatures, times, pH values and cultural media were detected by using gas chromatography (GC) method. Rs-J.1.4-010704-01v, a viru- lent strain of R. solanacearum isolated from ginger was chosen for the experiment. The results showed that the kind of fatty acid of Rs-J.1.4-010704-01v fluctuated from 14 to 33. The contents of its three plentiful fatty acids, C16:1?7c/C15:0 ISO 2OH, C16:0 and C18:1?7c (with retain times of 10.644, 10.950 and 14.177 min, respectively), also varied in a range of 55.66% to 75.69%. The diversification of the bacterium’s fatty acids at various cultural conditions was clustered into four groups by cluster analysis, according to the kinds and percentage contents of the fatty acids detected. The pathogenicities of Rs-J.1.4-010704-01v under 20?C and 25?C were deduced to be mid-virulent, with C16:0 less than C16:1?7c/C15:0 ISO 2OH. The bac- terium showed as a virulent strain under the other cultural conditions including 30?C~40?C, 24 h~96 h, pH 5~9 and four cultural media (LB、NA、TTC and TSB), with C16:0 more than C16:1?7c/C15:0 ISO 2OH.However, the difference between C16:0 and C16:1?7c/C15:0 ISO 2OH raised significantly from 2.35 to 13.23 under 40?C and 48 h~96 h. Meanwhile, the kind of fatty acid increased more than 30 as the cultural time increased. It was concluded that temperature and cultural time had more significant effects on the fatty acid composition of R. solanacearum than pH value and cultural medium.

Objective To find the effective therapeutic arrangement through investigating the clinical characteristics of chronic cardiac insufficiency with anaemia. Methods A total of 46 cases of anemia from 315patients who had been admitted to department of cardiology, the First Affiliated Hospital, Harbin Medical University for chronic cardiac insufficiency with anaemia were selected. They were divided into two groups. There were 22 patients in the first group who only accepted treatment to improve cardiac function (normal cardiac, diuretic,vasodilator therapy, etc.), and 24 patients in the second group who accepted treatment to improve cardiac function while receiving anti-anemia therapy treatment, oral ferrous sulfate tablets(0.3 g/tablet), 1 tablet each time, 3 times a day and(or) 2 times per week subcutaneous erythropoietin 3000 U. The hemoglobin(Hb), red blood cell(RBC) ,hematocrit (HCT), left ventricular ejection fraction (LVEF), fractional shortening (FS), stroke volume (SV) , cardiac output(CO) and E peak and A peak ratio(E/A) were observed before and after treatment. By logistic regression, grade grade Ⅱ , Ⅲ , Ⅳ, the incidence of anaemia were 7.9% (10/126), 19.2% (23/120) and 24.6% (17/69),respectively. Grade Ⅱ compared with grades Ⅲ, Ⅳ, the difference was statistically significant (x2 = 4.08, 3.12, all (3.49 ± 0.17) × 1012/L, (0.36 ± 0.08)%, (48.9 ± 3.11)%, (15.6 ± 1.8)%, (38.9 ± 3.7)%, (4.4 ± 1.6)% and (130.7 ±5.75)g/L, (4.12 ± 0.25) × 1012/L, (0.43 ± 0.02)%, (58.5 ± 2.65)%, (18.0 ± 2.5)%, (49.1 ± 7.7)%, (5.1 ± 1.2)%in the first and second groups, respectively. The difference between the two groups was statistically significant(t =value of Hb, RBC, HCT, LVEF, FS,SV, CO were (102.7 ± 6.93)g/L, (3.41 ± 0.12) × 1012/L, (0.35 ± 0.07)%,(47.5 ± 2.86)%, (16.0 ± 2.4)%, (38.2 ± 7.9)%, (3.7 ± 1.4)%, respectively. Compared with those after treatment,the difference was statistically significant (t = 15.632, 13.325, 5.569, 17.182, 3.186, 2.999, 3.074, all P ＜ 0.05);Ⅳ-level relative risk were 1.62, 3.14(P ＜ 0.05 or ＜ 0.01) . Conclusions Based on the standard treatment with treatment of anemia, cardiac contractile function can be improved.

This study aimed to construct the dual-gene expression vector pHsa-miR16-siRNA which can express human miR-16 and HBV X siRNA,and examine its regulatory effect on HBV gene expression in the HepG2.2.15 cell line.The expression vectors siR-1583 and pHsa-miR16-siRNA were designed and constructed.HepG2.2.15 cells were transfected with the empty vector,siR-1583,pmiR-16 and pHsa-miR16-siRNA,respectively.ELISA was performed to measure the expression of HBsAg and HBeAg in the culture supematant 48 and72 h post transfection.Fluorescence quantitative PCR was used to measure the HBV mRNA degradation efficiency and HBV DNA copy number.The results showed that the expression of HBV genes was significantly inhibited in HepG2.2.15 cells transfected with siR-1583,pmiR-16 and pHsa-miR16-siRNA,respectively,when compared with that in cells transfected with the empty vectors,with the inhibitory effect of pHsa-miR16-siRNA being the most significant.ELISA showed that the inhibitory rates of HBsAg and HBeAg in pHsa-miR16-siRNA transfected cells were correspondingly 87.3％ and 85.0％ at 48 h,and 88.6％ and 86.5％ at 72 h post transfection (P＜0.01vs.control group).RT-PCR showed that the level of HBV mRNA decreased by 80.2％ (t=-99.22,P＜0.01),the genomic HBV DNA by 92.8％ (t=-73.06,P＜0.01),and the supernatant of HBV DNA copy number by 89.8％ (t=-47.13,P＜0.01) in pHsa-miR16-siRNA transfected group.It was suggested that the dual-gene expression vector pHsa-miR16-siRNA can inhibit the replication of HBV more efficiently than a single-gene expression vector.