Benzene ; poisoning ; Humans ; Leukemia ; chemically induced

OBJECTIVETo explore the expression of hepatitis B-virus X gene (HBX) in adenoid cystic carcinoma (ACC) and determine its clinical significance.

METHODSBetween June 2008 and October 2012, in-hospital patients with salivary gland tumors who were treated at the Department of Oral and Maxillofacial Surgery, Affiliated Stomatology Hospital of Kunming Medical University, were enrolled to this study. HBeAb-positive patients were defined as those exposed to hepatitis B virus (HBV) or harboring persistent HBV infection regardless of being HBeAg positive or negative. According to the pathological results, all patients were divided into ACC group and control group. Immunohistochemical staining and polymerase chain reaction (PCR) were used to detect HBX expression in ACC group and control group.

RESULTSHBX expression was mostly detected in the cytoplasm of ACC cells. Minimal HBX expression was detected in the nucleus. HBX expression was significantly higher in ACC than in Warthin's tumor. A significant difference was observed between the two groups.

CONCLUSIONHBX is expressed in ACC and may be associated with the development of ACC. HBX might serve important functions in the carcinogenesis and development of ACC.

Objective To investigate the role of recombinant Vibrio vulnificus cytolysin (rVvhA) in inducing THP-1 cells damage and study the pathway of associated calcium influx .Methods Inverted mi-croscope, CCK-8 cell proliferation kit, Fluo3/AM staining and caspase activity detection were performed to analyze the damage of THP-1 cells induced by rVvhA and the pathway of calcium influx .Results rVvhA had cytotoxic effects on THP-1 cells in a dose-dependent manner .The concentrations of extracellular K +and LDH were respectively up-regulated after 1 h and 6 h of 12 μg/ml rVvhA intervention .Verapamil , Mibe-fradil and SKF-96365 could not prevent the influx of free Ca 2+induced by rVvhA .The activities of caspase-3 and caspase-9 were singanificantly enhanced by rVvhA in a time-dependant manner .Conclusion rVvhA can induce THP-1 cells damage through triggering extracellular calcium influx via porous channel on cell membrane.Moreover, rVvhA might induce THP-1 cell apoptosis through activating caspase-9/3-dependent pathway .

Diagnosis, Differential ; Female ; Humans ; Middle Aged ; Osteogenesis Imperfecta ; diagnosis ; therapy

With the advent of the modern medical mode,rehabilitation medicine teaching becomes an important part of the whole system of medical education.Theory on rehabilitation medicine education infiltrates clinical specialities and brings about a great advance in promoting subject development throughly during clinical education.

Objective To observe the curative effect of puerarin on Alzheimer's disease (AD) in ovariectomized versus non-ovariectomized rat.Methods 100 6-month-old female SD rats were randomly divided into 5 groups:the control group,non ovariectomized AD group,ovariectomized AD group,non-ovariectomized AD treatment group and ovariectomized AD treatment group (n =20each).Rat model of AD was made by treating with combined D-galactose and sodium nitrite for 60days.Treatment group rats were treated with puerarin for 8 weeks.At the end of the experiment,rats learning and memory abilities were tested by water maze,the serum estradiol,progesterone,follicle stimulating hormone and luteinizing hormone were measured,and the activities of cholinesterase (TchE) and superoxide dismutase (SOD),malondialdehyde (MDA) concentration in brain homogenate were determined.Results Compared with the control group,TchE activity and MDA content were increased,and SOD activity was reduced (all P＜0.01),and learning and memory abilities were significantly decreased in the ovariectomized and non-ovariectomized AD groups.Compared with the model groups,the activity of TchE and MDA concentration were reduced,and SOD activity was increased (all P＜0.01),and learning and memory abilities were significantly improved in the two treatment groups.As compared with non ovariectomized AD treatment group,the increase in SOD and TchE activities and decrease in MAD concentration were much more in ovariectomized AD treatment group (P＜0.05),and the improvement in learning and memory abilities was more significant.Conclusions Puerarin has a therapeutic effect on rat model of AD,even better on the ovariectomized rat model of AD.

Objective:To evaluate the efficacy and safety of rosuvastatin and atorvastatin in the treatment of the patients with primary hyperlipidemia in China.Methods:The related literatures in CNKI,VIP,Wanfang medicine network,PubMed/MEDLINE,CBM and Chinese dissertations full text database were retrievaled by computer from the establishment time of database to December 31,2015. Two researchers according to the inclusion and exclusion criteria independently selected the studies and extracted the data and assessed the quality of the literatures.The Revman 5.0 software was used to perform Meta analysis of all effect indicators in various groups.Results:A total of 7 randomized controlled trial (RCT)were included,and there was no significant abnormality in bias evaluation. 8 weeks after treatment, the total cholesterol (TC), triglyceride (TG), low density lipoprotein cholesterol (LDL-C)and high density lipoprotein cholesterol (HDL-C)levels of the patients in 5 mg rosuvastain group and 10 mg atorvastatin group had no significant differences between before and after treatment (P >0.05);the HDL-C levels of the patients in 10 mg rosuvastatin group and 10 mg atorvastatin group had significant differences between before and after treatment (P < 0.05),but the TG,TC,and LDL-C levels had no significant differences (P >0.05);the TG,TC,LDL-C and HDL-C levels of the patients in 5 mg and 10 mg rosuvastatin groups had no significant differences between before and after treatment (P > 0.05).12 weeks after treatment,there were no significant differences in the TC and LDL-C levels between 10 mg rosuvastatin group and 10 mg atorvastatin group (P >0.05),but there were significant differences in the TG and HDL-C levels (P <0.01).The incidence of adverse reactions of the patients in three groups had no significant differences (P >0.05).Conclusion:5 mg rosuvastatin and 10 mg atorvastatin in the treatment of the patients with primary hypercholesterolemia have similar lipid-lowering effect;with the the increase of the treatment time and the dose,10 mg rosuvastatin can obviously reduce the TG level and increase the HDL-C level of the patients,and the incidence of adverse reactions of two kinds of doses of rosuvastatin has no obvious difference.

Objective Recent studies suggest that the red blood cell distribution width ( RDW) may play a role in the diag-nosis and treatment of cardiovascular disease.The aim of this study was to investigate the correlation of red blood cell distribution width (RDW) with cardiovascular events in patients with Acute ST-segment elevation myocardial infarction (ASTEMI) in order to provide the basis for improving the diagnosis level and therapeutic effect. Methods Retrospective study was made on the clinical data of 189 patients with ASTEMI enrolled in Sichuan Provincial People′s Hospital from January 2013 to March 2014.The survival rates of patients with ASTEMI with different RDW were estimated by Kaplan-Meier and compared by Log-rank test and the prognosis factors were inves-tigated by Cox proportional hazard regression model. Results 97 patients′RDW levels were more than 13.7% and 92 patients′RDW levels were less than or equal to 13.7% in 189 ASTEMI patients. The hs-CRP, BNP, LVEF and HDL-C were significantly different be-tween two groups (P<0.05).The rates of recurrent myocardial in-farction, heart failure, sudden death cardiac in patients with highRDW were higher than that in patients with low RDW (22.7%vs 8.7%, 27.8%vs 10.9%, 15.5%vs 5.4%)(χ2 =6.915, 8.632, 5.019, P<0.05) .There were 60 patients with high RDW who experienced cardiovascular events and the 1-year cardiovascular event-free survival rate was 38.1%, and 20 patients with low RDW cardiovascular events was 79.3% in follow-up period (χ2 =30.959, P<0.001).Multivariate cox regression showed that age>65 (HR=2.43, 95%CI:1.09~5.44) and RDW>13.7%(HR=2.20, 95% CI:1.10~4.43) were risk prognostic factors. Conclusion There is a certain correlation between RDW and cardiovascular e-vents in patients with ASTEMI.The ASTEMI patients with high RDW hold higher risk of cardiovascular events and poorer prognosis.

Objective To evaluate cytotoxic effects of cytokine-induced killer cells (CIK cells) transfected with the interleukin-2 (IL-2) gene on malignant melanoma cells.Methods Mouse spleen cells were extracted,lymphocyte cells were separated,and CIK cells were prepared from these lymphocyte cells.PEGF-N1 plasmids containing IL-2 gene (PEGF-NI-IL-2) were transfected into CIK cells.Fluorescence microscopy was used to observe transfection products,and reverse transcriptase-polymerase chain reaction (RT-PCR) was conducted to determine the IL-2 mRNA expression.Then,effector cells such as CIK cells and IL-2-transfected CIK cells were separately co-cultured with target cells (B16 melanoma cells) at effector-target ratios of 10∶ 1,20∶1 and 40∶1,then 4-hour lactate dehydrogenase release assay was performed to evaluate cytotoxic effects of the two kinds of CIK cells on B 16 cells.After effector cells were cocultured with target cells at the effector-target ratio of 40∶1 for 48 hours,enzyme-linked immunosorbent assay (ELISA) was conducted to detect levels of IL-2,interferon-γ (IFN-γ) and tumor necrosis factor-α (TNF-α) in the supernatant of the two kinds of CIK cells.Finally,mouse models of melanoma were established,and a total of 28 melanoma-bearing mice were divided into 4 groups to be peritumorally injected with 0.2 ml sodium chloride physiological solution (control group),100 IU IL-2 solution (IL-2 group),CIK cell suspension at a cell density of 1 × 106 cells per milliliter (CIK group) and IL-2-transfected CIK cell suspension at a cell density of 1 × 106 cells per milliliter (IL-2-transfected CIK group) respectively.Tumor morphology,tumor inhibition rate and cell apoptosis rate were used to evaluate tumor growth in the above groups.If data were normally distributed,t-test was used for comparing means between two groups,and analysis of variance and least significant difference (LSD)-t test were used for comparing means among multiple groups.Results Fluorescence microscopy and RT-PCR both showed that IL-2 was successfully transfected into CIK cells.The cytotoxic effect of IL-2-transfected CIK cells on B16 cells was strongest at the effector-target ratio of 40:1.Levels of IL-2,IFN-γ and TNF-α were also significantly higher in the supernatant of IL-2-transfected CIK cells [(1107.26 ± 6.49) pg/ml,(50.01 ± 3.35) pg/ml,(39.86 ± 3.25) pg/ml] than those in that of CIK cells [(51.09 ± 3.85) pg/ml,(32.71 ± 2.43) pg/ml,(30.11 ± 3.08) pg/ml,t =442.60,14.93,6.89,all P ＜ 0.01].Animal experiments showed that the tumor volume obviously increased in the control group (P ＜ 0.05),but significantly decreased in the IL-2 group,CIK group and IL-2-transfected CIK group (all P ＜ 0.001) after intervention compared with those before intervention.Furthermore,the tumor volume in the IL-2-transfected CIK group was significantly less than that in the other three groups (all P ＜ 0.01),but no significant difference was observed between the IL-2 group and CIK group (P ＞ 0.05).In addition,the apoptosis rate was significantly higher in the IL-2 group,CIK group,and IL-2-transfeeted CIK group than that in the control group (all P ＜ 0.01).The apoptosis rate and tumor inhibition rate were significantly higher in the IL-2-transfected CIK group than those in the IL-2 group and CIK group (all P ＜ 0.01),but insignificantly different between the IL-2 group and CIK group (P ＞ 0.05).Conclusion IL-2-transfected CIK cells had stronger killing effects on malignant melanoma.

Objective Inflammation plays a critical role in the presence , development and maintenance of atrial fibrillation ( AF) , but it remains unclear what factors induce inflammation in AF patients , especially in those with valvular heart disease ( VHD) . The aim of this paper was to investigate the role of the shedding of Syndecan -4 in left atrial inflammation in patients with valvular atrial fibrillation. Methods Sixty VHD patients scheduled for valvuloplasty or valve replacement surgery were divided into three groups of equal number:sinus rhythm (SR), paroxysmal atrial fibrillation (PaAF), and persistent atrial fibrillation (PeAF).Another 10 pa-tients with congenital heart disease but no valve damage and atrial fibrillation were included in a control group .Baseline clinical data were recorded and tissues were obtained from the left atrial appendage during operation .The expressions of iNOS , HMGB1, and Syn-decan-4 in the left atrium were detected by Western blot , and the pathological changes of the left atrial tissue observed by HE staining . Results Western blot analysis was performed to detect expression levels of proteins .The iNOS level was significantly higher in pa-tients from the paroxysmal AF group (1.61 ±0.10) and persistent AF group (1.67 ±0.08) than those from sinus group (1.06 ± 0.11) and control group (1.02 ±0.12), as was the protein level of HMGB1 (0.63 ±0.05, 0.95 ±0.10, 0.45 ±0.07 and 0.46 ± 0.06 in paroxysmal AF group, persistent AF group, sinus group and controlgroup respectively ).Inflammatory cell infiltration in-creased, while syndecan 4 was down-regulated in AF groups.All these comparisons were significant (P<0.05). Conclusion The decreased expression of Syndecan-4 and enhanced inflammatory response in the left atrial tissue indicate that the shedding of Synde-can-4 may play a role in the presence and development of inflamma-tion in the left atrium .