A Cross-Sectional Study on The Prevalence of Anemia in Maintenance Hemodialysis and Peritoneal Dialysis Patients and Its Related Factors

Objective:To study the prevalence of anemia,the proportion of hemoglobin(Hb)levels,the treatment methods,and the influencing factors of Hb levels in maintenance hemodialysis(MHD)and peritoneal dialysis patients.Methods:In this study,602 patients with maintenance hemodialysis and continuous ambulatory peritoneal dialysis were enrolled from December 2020 to December 2022 in our hospital,and their medical records were collected and summarized.The main contents included the patient’s gender,age,primary disease,dialysis duration,dialysis method,the use of erythropoietic stimulating agents(ESA),intravenous iron,and laboratory tests.A Hb index exceeding 110 g/L was set as the standard for the prevalence of anemia.Results:The rate of anemia in patients undergoing blood purification was 83%.The proportion of ESA use was 84.1%,and the proportion of iron use was 76.7%,of which the proportion of intravenous iron used was 17.0%,and the proportion of folic acid used was 28.3%.Conclusion:The incidence of anemia in MHD patients was relatively high,with a low proportion of patients reaching the standard Hb levels.Risk factors include albumin(ALB)levels,iron storage,white blood cells,C-reactive protein,cholesterol,etc.Nutritional support,iron supplementation,and prevention of micro-inflammatory reactions can effectively promote the improvement of Hb indicators in dialysis patients to prevent anemia.

Analysis of Factors Related to Vasovagal Response in Apheresis Blood Donors and the Establishment of Prediction Model Based on BP Neural Network Algorithm

Objective:To analyze the factors related to vessel vasovagal reaction(VVR)in apheresis donors,establish a mathematical model for predicting the correlation factors and occurrence risk,and use the prediction model to intervene in high-risk VVR blood donors,improve the blood donation experience,and retain blood donors.Methods:A total of 316 blood donors from the Xi'an Central Blood Bank from June to September 2022 were selected to statistically analyze VVR-related factors.A BP neural network prediction model is established with relevant factors as input and DRVR risk as output.Results:First-time blood donors had a high risk of VVR,female risk was high,and sex difference was significant(P value<0.05).The blood pressure before donation and intergroup differences were also significant(P value<0.05).After training,the established BP neural network model has a minimum RMS error of o.116,a correlation coefficient R=0.75,and a test model accuracy of 66.7%.Conclusion:First-time blood donors,women,and relatively low blood pressure are all high-risk groups for VVR.The BP neural network prediction model established in this paper has certain prediction accuracy and can be used as a means to evaluate the risk degree of clinical blood donors.

Analysis on Fuji Apple Tree Structures and Related Factors under Different Pruning Modes

To determine the correlations between the tree structuresof Fuji apple with different pruning modes and each factor, the data about 3 tree structures which were free spindle short shoot, free spindle long shoot and slenderspindle short shoot in Xingtang County of Hebai Province were investigated, then by SPSS anal- ysis, the correlations between the taperingness and each growth factor of inserted small branch were compared. The results showed that the taperingness of central trunk of free spindle dwarf-shoot Fuji apple treeshad negative correlations with each factor of inserted small branch, while the taperingness of central trunk of free spin- dle long-shoot Fuji apple treeshad positive correlations with each factor of inserted small branch, the taperingness of central trunk of slenderspindle short-shootFuji ap- ple treeshad negative correlation with total thickness of inserted small branch, but had positive correlations with other factors. This study can provide a scientifictheo- retical basis for the pruning technology of high-density planting trees grafting by dwarfing self-rooted rootstock.

Study on Self-consciousness of Children With Learning Disabilities and Related Factors

Objective To study the self-consciousness of children with learning disabilities (LD) and to identify related factors. Methods Five hundred and sixty pupils graded from 1 to 6 in an elementary school were investigated. According to the pupil rating scale revised screening for learning disabilities (PRS), combined Raven’s test (CRT) and achievement of main courses, 35 of 560 pupils were diagnosed as LD children. Thirty-five children were selected from the average children and 35 from advanced children in academic achievement equally matched in class, gender, and age with LD children as control groups. The three groups were tested by Piers-Harris children’s self-concept scale. Basic information of each subject was collected by self-made questionnaire. Results Compared with the average and advanced children, LD children got significantly lower scores in self-concept scale. Based on logistic regression analysis, 3 factors were identified, including family income per month, single child and delivery model. Conclusion The results suggest that self-consciousness of children with LD is lower than that of normal children.

Insulin-like growth factor binding protein related protein 1 knockdown attenuates hepatic ?brosis via the regulation of MMPs/TIMPs in mice

Background: Previous research suggested that insulin-like growth factor binding protein related protein 1(IGFBPrP1), as a novel mediator, contributes to hepatic fibrogenesis. Matrix metalloproteinases(MMP) and tissue inhibitors of metalloproteinases(TIMP) play an essential role in hepatic fibrogenesis by regulating homeostasis and remodeling of the extracellular matrix(ECM). However, the interaction between IGFBPrP1 and MMP/TIMP is not clear. The present study was to knockdown IGFBPrP1 to investigate the correlation between IGFBPrP1 and MMP/TIMP in hepatic fibrosis. Methods: Hepatic fibrosis was induced by thioacetamide(TAA) in mice. Knockdown of IGFBPrP1 expression by ultrasound-targeted microbubble destruction-mediated CMB-shRNA-IGFBPrP1 delivery, or inhibition of the Hedgehog(Hh) pathway by cyclopamine treatment, was performed in TAA-induced liver fibrosis mice. Hepatic fibrosis was determined by hematoxylin and eosin and Sirius red staining. Hepatic expression of IGFBPrP1, α-smooth muscle actin( α-SMA), transforming growth factor β 1(TGF β1), collagen I, MMPs/TIMPs, Sonic Hedgehog(Shh), and glioblastoma family transcription factors(Gli1) were investigated by immunohistochemical staining and Western blotting analysis. Results: We found that hepatic expression of IGFBPrP1, TGF β1, α-SMA, and collagen I were increased longitudinally in mice with TAA-induced hepatic fibrosis, concomitant with MMP2/TIMP2 and MMP9/TIMP1 imbalance and Hh pathway activation. Knockdown of IGFBPrP1 expression, or inhibition of the Hh pathway, reduced the hepatic expression of IGFBPrP1, TGF β1, α-SMA, and collagen I and re-established MMP2/TIMP2 and MMP9/TIMP1 balance. Conclusions: Our findings suggest that IGFBPrP1 knockdown attenuates liver fibrosis by re-establishing MMP2/TIMP2 and MMP9/TIMP1 balance, concomitant with the inhibition of hepatic stellate cell activation, down-regulation of TGF β1 expression, and degradation of the ECM. Furthermore, the Hh pathway mediates IGFBPrP1 knockdown-induced attenuation of hepatic fibrosis through the regulation of MMPs/TIMPs balance.

Interaction between insulin-like growth factor binding protein-related protein 1 and transforming growth factor beta 1 in primary hepatic stellate cells

BACKGROUND: We previously showed that insulin-like growth factor binding protein-related protein 1 (IGFBPrP1) is a novel mediator in liver fibrosis. Transforming growth factor beta 1 (TGF beta 1) is known as the strongest effector of liver fibrosis. Therefore, we aimed to investigate the detailed interaction between IGFBPrP1 and TGF beta 1 in primary hepatic stellate cells (HSCs). METHODS: We overexpressed TGF beta 1 or IGFBPrP1 and inhibited TGF beta 1 expression in primary HSCs for 6, 12, 24, 48, 72, and 96 hours to investigate their interaction and observe the accompanying expressions of a-smooth muscle actin (alpha-SMA), collagen I, fibronectin, and phosphorylated-mothers against decapentaplegic homolog 2/3 (p-Smad2/3). RESULTS: We found that the adenovirus vector encoding the TGF beta 1 gene (AdTGF beta 1) induced IGFBPrP1 expression while that of alpha-SMA, collagen I, fibronectin, and TGF beta 1 increased gradually. Concomitantly, AdIGFBPrP1 upregulated TGF beta 1, alpha-SMA, collagen I, fibronectin, and p-Smad2/3 in a time-dependent manner while IGFBPrP1 expression was decreased at 96 hours. Inhibition of TGF beta 1 expression reduced the IGFBPrP1-stimulated expression of alpha-SMA, collagen I, fibronectin, and p-Smad2/3. CONCLUSIONS: These findings for the first time suggest the existence of a possible mutually regulation between IGFBPrP1 and TGF beta 1, which likely accelerates liver fibrosis progression. Furthermore, IGFBPrP1 likely participates in liver fibrosis in a TGF beta 1-depedent manner, and may act as an upstream regulatory factor of TGF beta 1 in the Smad pathway.

Analysis of the psychological conditions and related factors of breast cancer patients

Sufferers of breast cancer are often plagued by various psychological problems. Mastectomy, which has a serious influence on the female sex characteristics, can bring about especially serious psychological problems. These problems affect not only the patients’ quality of life but also the beginning, development, and end of the disease. This paper reviewed the relationships between the patients’ personal factors, the disease itself, treatment factors, and other socio-psychological factors and psychological conditions so as to provide new ideas for the psychological intervention on breast cancer patients, comprehensive clinical diagnosis and treatment, and prevention and cure.

Risk factors related to chronic rhegmatogenous retinal detachment

AIM: To evaluate the clinical factors related to chronic rhegmatogenous retinal detachment (RRD). METHODS: A retrospective case-control study. A total of 103 consecutive patients (103 eyes) with primary RRD were studied to evaluate the clinical factors related to chronic RRD. RESULTS: Chi-square test was used to sift out the following associated factors with chronic RRD: younger patients(P=0.0028), better preoperative best corrected visual acuity (BCVA, P=0.0316), atrophic retinal break (P<0.0001), inferior retinal break (P<0.0001), smaller break (P=0.0005); then the independent risk factors related to chronic RRD was determined by stepwise logistic regression analysis as following: atrophic retinal break (odds ratio (OR)=7.997, P=0.007), inferior retinal break (OR=14.127, P<0.0001) and better preoperative BCVA (OR=1.636 P<0.0722). CONCLUSION: Atrophic retinal break, inferior retinal break and better preoperative BCVA are the independent risk factors related to chronic RRD.

Family-relatedFactorsThatInfluenceChildren’sAcademicAchievementsinSchool

This essay studies various family-related factors that influence a child’s academic achievement in school in P.R. China. The factors are illustrated under three categories: the family’s social class and education, early home environment and family material condition. The author discusses the relevant factors by way of relating the knowledge of social environment to his own experiences as a student and then teacher in China. The essay closes with a discussion directing the public’s attention to the concern about home-related factors influencing a child’s academic achievements in school.

The Impact of Finerenone on Changes in Pulse Wave Velocity, Arterial Pressure and Heart Related Deaths in Hemodialysis Patients—Study Perspective

The description in the abstract lacks clear logic and a comprehensive summary of this study, so please revise and improve it according to the design theme and main content of this study, and describe it in the order of (research background), purpose/aim, method, results and conclusions. The introduction of the abstract and preface is rather lengthy, but the summary of the whole study and the presentation of the research background are not perfect (mainly because the logic of the context is not clear and orderly), so it will appear a bit messy. Hope to be able to modify (this has been mentioned in the preliminary opinion). Cardiovascular events (CVE) pose a significant threat to individuals with end-stage renal disease (ESRD), yet these patients are often excluded from cardiovascular clinical trials, leaving prognostic factors associated with CVE in ESRD patients largely unexplored. Recent human studies have demonstrated elevated circulating aldosterone levels in ESRD patients, correlating with left ventricular hypertrophy. Additionally, animal models have shown improvements in uremic cardiomyopathy with spironolactone therapy, prompting interest in assessing the efficacy of spironolactone or eplerenone in reducing mortality and improving cardiovascular function in dialysis patients. Clinicians have historically been cautious about prescribing mineralocorticoid receptor antagonists (MRAs) to congestive heart failure patients with chronic kidney disease (CKD) due to hyperkalemia risk. However, the emergence of finerenone, a novel MR antagonist with a favorable safety profile and lower hyperkalemia risk, has renewed interest in MRA therapy in this population. Heart disease, including coronary artery disease, hypertension, and left ventricular failure, is alarmingly prevalent in dialysis patients, contributing significantly to elevated mortality rates compared to the general population. Arterial stiffness, as indicated by pulse wave velocity (PWV), progressively worsens with advancing CKD stages, peaking in severity among ESRD patients undergoing dialysis. High PWV serves as a crucial risk stratification tool in ESRD. Elevated NT-proBNP and BNP levels in ESRD patients are well-documented, with significant associations observed between baseline peptide concentrations and cardiovascular morbidity and mortality. By incorporating finerenone into our study, we aim to investigate its potential benefits in reducing arterial stiffness, lowering blood pressure, and ultimately mitigating heart-related mortality among hemodialysis patients. This study holds substantial implications for hypertension and cardiovascular risk management in this vulnerable patient population. Eligible participants must have been on chronic hemodialysis for at least three months, with ACE inhibitors or angiotensin receptor blockers included in their therapy at maximum tolerable doses. Serum potassium levels 5.7 mmol/L, left ventricular ejection fraction 50%, and PWV higher than age-estimated values are also prerequisites for study entry. Randomized allocation will be conducted using a permuted block design, stratified by center, with allocation communicated via signed study forms during initial examinations. All steps of this research will be conducted in accordance with the principles of the Helsinki Declaration.

Realities of Reflective Practice Skill among Public Health Nurses in Japan and Related Learning and Lifestyle Factors

Background: According to the diversification of the health needs and the expansion of health disparities, it is necessary to raise their reflective practice skills so that PHNs present more appropriate activities. The purpose of this study was to elucidate the realities of reflective practice skills among public health nurses in Japan and identify related factors. Methods: This study covered 1725 public health nurses in the Chugoku/Shikoku area. We conducted an anonymous self-completed questionnaire survey. As reflective practice skills (RPS), we adopted the six components of the six cycles of the Gibbs reflective model. We used the 20 criteria of the Scale for Practical Competence (SPC). We set 25 learning history/daily lifestyle items. The study plan was approved by the Ethics Committee of Okayama University. Results: We analyzed the 962 (55.8%) valid responses. Although years of experience as a public health nurse was highly correlated with practical skills as measured by SPC, with a correlation coefficient of 0.627, it was not closely related with RPS, with a correlation coefficient as low as 0.129. A logistic regression analysis of the eight learning history items and six daily lifestyle items associated with RPS, with the introduction of the high/low RPS groups as dependent variables, showed a convergence to five factors (odds ratio of 1.38 - 2.29). Conclusions: Going forward, we will need to consider how to accumulate learning on a daily basis and how to include positive health practice in PHN education, in connection with exploring the curriculum and method of training.

Effects of Yinzhihuang oral liquid and albumin on bilirubin, inflammatory factors, immune indexes and related factors in neonatal pathologic jaundice

Objective: To explore the effects of Yinzhihuang oral liquid and albumin on bilirubin, inflammatory factors, immune indexes and related factors in neonatal pathologic jaundice. Methods: A total of 134 neonates with pathologic jaundice admitted to our hospital from May 2017 to April 2018 were randomly selected as the control group (n=67) and the observation group (n=67), the control group was treated with albumin, the observation group was treated with Yinzhihuang Oral Liquid on the basis of the control group. The bilirubin, inflammatory factors, immune indicators, alpha-fetoprotein (AFP) and transferrin (TRF) were compared and analyzed before and after treatment. Results: After treatment, the levels of TBIL, DBIL and IBIL in both groups were significantly lower than those before treatment (P<0.05), and the levels of TBIL, DBIL and IBIL [(118.60±10.85) μmol/L, (6.95±1.52) μmol/L, (115.30±14.20)μmol/L] in observation group were significantly lower than those in control group;the levels of CRP and IL-6 in both groups were significantly lower than those before treatment (P<0.05), and the levels of CRP and IL-6 [(8.26±2.07) mg/L, (12.69±2.15) pg/mL] in observation group were significantly lower than those in control group (P<0.05);the levels of CD4+, CD4+/CD8+ in both groups were significantly higher than those before treatment (P<0.05), while the levels of CD8+ was significantly lower than that before treatment, the levels of CD4+, CD4+/CD8+ [(47.08±5.70)%, (2.08±0.41)] in observation group were significantly higher than those in control group (P<0.05), and the level of CD8+ [(22.90±2.05)%] was significantly lower than that in control group (P<0.05);the levels of AFP in significantly higher than before treatment (P<0.05), and the levels of AFP [(12.69±3.04)mg/L] in observation group were significantly lower than those in control group (P<0.05), the levels of TRF [(2.02±0.35) g/L] were significantly higher than those in control group (P<0.05). Conclusions: The combination of Yinzhihuang oral liquid and albumin can effectively reduce the bilirubin level in neonatal jaundice, inhibit its inflammatory reaction, enhance the cellular immune function and improve the expression of AFP and TRF, which is of clinical significance.

A Review of Systemic Lupus Erythematosus (SLE): Symptoms, Risk Factors, Treatment, and Health Related Quality of Life Issues

In this paper, we present a thorough review of one of the most life-threatening autoimmune diseases, Systemic lupus erythematosus (lupus). Symptoms, risk factors, including genetic and epidemiological factors are discussed. Treatment, life expectancies, and Health Related Quality of Life of patients with SLE will be discussed as well. Special attention will be given to Lupus Nephritis.

Subjective Well-Being among Empty-Nest Elderly and Its Related Factors:Taking Guangdong Province as an Example

Objective:To explore the the status of happiness and social support of empty nesters in Guangdong Province and analyze the relationship between the above two variables.Method:Totally 1148 empty nesters(776 males,734 females)from 5 cities in Guangdong province are selected by stratified random sampling and conducted with Memorial University of Newfoundland Scale of Happiness(MUNSH),Social Support Rating Scale(SSRS),Mini-Mental State Examination(MMSE)and a self-edited questionnaire on the general information.Results:The total score of MUNSH is(10.20±6.37).The total score and the scores of the 3 dimensions of objective support,subject support,the use of support in SSRS are(30.79±5.51),(9.24±2.37),(19.38±4.95)and(9.22±2.15)respectively.Multiple variable linear regression show that are positively associated with the total scores of MUNSH(B=.227,.115,.098,.158,.082,respectively,P<.05).was negatively associated with total score of MUNSH(B=-.097,P<.05).Conclusion:It suggests that the sort of leisure,gender,progress rank,family characteristics,such as family economic condition and father’s career may be related factors of undergraduates life satisfaction.

Association between complement factor I gene polymorphisms and the risk of age-related macular degeneration:a Meta-analysis of literature

AIM： To systematically review the association between complement factors I （CFI） polymorphisms and age- related macular degeneration （AMD） and to explore whether CFI polymorphisms are associated with AMD, METHODS： Meta-analysis of articles published from 1995 to January 2015 of articles involved with AMD and polymorphisms of the CFI gene. Eligible data were pooled in a Meta-analysis, analyzing using STATA software （version 12.0）, Review Manager （version 5.2） and different models based on the heterogeneity of effect sizes. Egger＇s test, Begg＇s rank correlation methods were used to evaluate for publication bias.~ RESULTS： Thirteen articles were eligible, describing two loci polymorphisms of the CFI gene （of which 12 articles focus on rs10033900T〉C and 3 articles focus on rs2285714C〉T）. For rs10033900T〉C, the results of our study revealed that having a mutant allele C, TC, CC and TC＋CC was associated with a decreased risk of AMD in all population groups studied （C versus T models, OR=0.84, 95%Ch 0.72-0.99, P=0.04; TC versus TT models OR= 0.89, 95%Ch 0.88-0.99, P=0.04;CC versus ＂1-1＂ models, OR=0.76, 95%Ch 0.60-0.98, P=-0.03; TC＋CC versus TT models, OR=0.81, 95%Ch0.65-0.99, P=0.04）. We found that C allele were related to lower AMD risk in the Caucasian population by subgroup analysis, but there was no association with AMD under the allele and genotypes comparison in Asian studies. For rs2285714 C〉T, the TC, TT genotypes contributed to a higher risk of AMD, compared with the CC carriers and CT＋CC （OR=1.34, 95%Ch 1.09-1.63, P=0.004; OR=1.50, 95%Ch 1.25-1.80, P〈0.0001）. CONCLUSION： This Meta-analysis suggests that CFI rs10033900T〉C and rs2285714C〉T polymorphisms may contribute to AMD.

Increased serum levels of soluble CD146 and vascular endothelial growth factor receptor 2 in patients with exudative age-related macular degeneration

AIM: To investigate serum levels of soluble CD146(s CD146) and vascular endothelial growth factor receptor 2(VEGFR2) in patients with age-related macular degeneration(AMD). METHODS: Eighty-eight patients with exudative AMD and 45 sex-and age-matched healthy controls were enrolled in this study conducted in China. Serum samples was obtained from the patients with exudative AMD and from the controls. Serum sCD146 and VEGFR2 protein levels were measured using an enzyme-linked immunosorbent assay.RESULTS: We found that serum sCD146 and VEGFR2 protein levels were significantly higher in the patients with exudative AMD group than in the controls(t=3.859, P<0.001 and t=3.829, P<0.001, respectively). Serum sCD146 levels were significantly higher in patients with classic choroidal neovascularization(CNV) than in those with occult CNV(t=9.899, P<0.001). There was a significant difference in the trend for exudative AMD in the highest versus lowest quartile of circulating sCD146 levels(χ2=10.29, P=0.001). The receiver operating characteristic curve analysis showed that the area under the curve was 0.696 for s CD146(95%CI: 0.601-0.791) with an optimum diagnostic cut-off value of 157.16 ng/mL, a sensitivity of 55.7%, and a specificity of 82.2%.CONCLUSION: The serum sCD146 level increases and may be a biomarker for exudative AMD.

Living-related liver transplantation in patients with variceal bleeding:outcome and prognostic factors

BACKGROUND:Liver transplantation currently represents the ultimate therapy for bleeding esophageal varices in patients with liver cirrhosis.It is the only therapy that cures both portal hypertension and the underlying liver disease.The outcome of liver transplantation is thought to be correlated with several factors.In this study,the clinical outcome of living-related liver transplantation(LRLT) was evaluated in patients with variceal bleeding,and the prognostic indicators of short-term survival in these patients were identified. METHODS:We reviewed retrospectively 121 patients with a history of variceal bleeding who had received LRLT from 1998 to 2006.The clinical outcomes were analyzed,and the risk factors for short-term survival were defined. RESULTS:The 3-month survival rate of patients with variceal bleeding was 83.4%,while that of non-bleeders was 87%.Sepsis was the commonest cause of death in both groups.Portal vein diameter and blood transfusion were the only independent prognostic factors for short-term survival among variceal bleeders. CONCLUSION:The outcome of LRLT in recipients with variceal bleeding is based on the improvement of portal hemodynamics,by minimizing intraoperative blood loss and subsequent blood transfusion.

Analysis on Factors Related with Slender Spindle Shaped Apple Trees

[Objectives] This study was to determine the correlations of stem taperingness with small central shaft total roughness,average roughness,total length,and average length by slender spindle pruning mode on different apple cultivars. [Methods]A total of 2 tree structures were selected,namely,the slender spindleshaped Zhongqiuwang from Shen County of Hebei Province and slender spindle-shaped short shoot Fuji from Xingtang County of Hebei Province,to investigate the growth indicators of the small central shafts. SPSS analysis was used to compare the correlations between the taperingness with the growth factors of the small central shafts. [Results]The stem taperingness on slender spindle-shaped Zhongqiuwang was positively correlated with the various growth factors of the small central shaft,and the difference in the positive correlation with average roughness reached the extremely significant level. The stem taperingness of slender spindle-shaped short shoot Fuji was negatively correlated with the total roughness of small central shaft,but was positively correlated with the average roughness,total length and average length. [Conclusions] The results provided scientific and theoretical basis for guiding the dense planting of dwarfing apple tree pruning technology.

Central Venous Catheter-related Thrombosis in Senile Male Patients: New Risk Factors and Predictors

Central venous catheterization（CVC）-related venous thrombosis is a common but serious clinical complication, thus prevention and treatment on this problem should be extensively investigated. In this research, we aimed to investigate the incidence rate of CVC-related venous thrombosis in senile patients and give a further discussion on the related risk factors and predictors. A total of 324 hospitalized senile male patients subjected to CVC were selected. Retrospective investigation and analysis were conducted on age, underlying diseases, clinical medications, catheterization position and side, catheter retention time, and incidence of CVC-related venous thrombosis complications. Basic laboratory test results during catheterization and thrombogenesis were also collected and analyzed. Among the 324 patients, 20 cases（6.17%） of CVC-related venous thrombosis were diagnoseds. The incidence rate of CVC-related venous thrombosis in subclavian vein catheterization was significantly lower than that in femoral vein catheterization（P〈0.01） and that in internal jugular vein catheterization（P〈0.05）. No statistically significant difference was found between femoral vein catheterization and internal jugular vein catheterization（P〉0.05）. Previous venous thrombosis history（P〈0.01）, high lactate dehydrogenase level（P〈0.01）, low high-density lipoprotein（HDL） level（P〈0.05）, and low albumin level（P〈0.05） were found as risk factors or predictors of CVC-related venous thrombosis in senile male patients. Subclavian vein catheterization was the most appropriate choice among senile patients to decrease the incidence of CVC-related venous thrombosis. Previous venous thrombosis history, high lactate dehydrogenase level, low HDL level, and low albumin level were important risk factors in predicting CVC-related venous thrombosis.

Expression of tumor necrosis factor related apoptosis inducing ligand receptor in glioblastoma

BACKGROUND： Receptors for tumor necrosis factor related apoptosis inducing ligand （TRAIL） include death receptor 4, death receptor 5, decoy receptor 1, and decoy receptor 2. Activation of death receptor 4 and 5 selectively kills tumor cells. OBJECTIVE： To detect TRAIL receptor expression in glioblastoma by immunohistochemistry and RT-PCR, and to compare this expression to that in normal brain tissue. DESIGN： Observational analysis. SETTING： Department of Pathology, the First Affiliated Hospital of Zhengzhou University; Henan Tumor Pathology Key Laboratory. PARTICIPANTS： Twenty-five patients （17 males and 8 females） who received glioblastoma resection were selected from the Fifth Affiliated Hospital of Zhengzhou University, between September 2003 to June 2004. All glioblastoma samples were diagnosed pathologically. Twenty patients （12 males and 8 females） with craniocerebral injury who received normal brain tissue resection were selected in the same time period. There were no significant differences in sex and age between glioblastoma patients or between craniocerebral injury patients （P 〉 0.05）. All patients and appropriate relatives provided informed consent, and this study was approved by the local research ethics committee. METHODS： Polyclonal antibody against TRAIL receptors and an immunohistochemical kit （batch number： 200502） were purchased from Boster Company, Wuhan. Immunohistochemistry： Expression of death receptor 4, death receptor 5, decoy receptor l, and decoy receptor 2 were observed in both glioblastoma and normal brain tissue. The experiment was performed according to the kit instructions, and positive staining was brown-yellow. Assessment： There were no positive signals （-）; weakly positive signals, positive cells 〈 25% （＋）; weakly positive signals, positive cells 25%-50% （＋＋）; strongly positive signals, positive cells 50%-75% （＋＋＋）; strongly positive signals, positive cells 〉 75% （＋＋＋＋）. Evaluation： Expression levels of TRAIL receptors were estimated in both normal brain tissue and glioblastoma. Expression of decoy receptor 1 and decoy receptor 2 mRNA in glioblastoma were detected by reverse transcription polymerase chain reaction, and expression of decoy receptor in glioblastoma was estimated. MAIN OUTCOME MEASURES： Comparison of death receptor and decoy receptor protein expression between glioblastoma and normal brain tissue; decoy receptor mRNA expression in glioblastoma. RESULTS： Death receptor protein expression was strongly positive （＋＋＋） in glioblastoma, while it was weakly positive （＋, ＋＋） in normal brain tissue. Therefore, expression rate of death receptor protein in the glioblastoma was significantly higher than that in the normal brain tissue （.~ 2 = 18.48, 23.03, P 〈 0.01）. Decoy receptor protein expression in the glioblastoma was significantly lower than that in the normal brain tissue （ x2 = 6.65, 18.76, P 〈 0.01）. The level of decoy receptor mRNA expression in glioblastoma was significantly higher than those of protein expression （ x 2 = 9.82, 10.09, P〈 0.01）. CONCLUSION： High expression of death receptor and low expression of decoy receptor are frequently observed in glioblastoma, suggesting that TRAIL receptor genes show an anti-tumor and expressive response during the initiation and development of the tumor. There are significant differences in decoy receptor expression between normal brain tissue and glioblastoma, suggesting that the restricted expression of decoy receptor in glioblastoma is regulated at the post-transcriptional level.