Eight phenolic compounds were isolated from Rhododendron phaeochrysum var. agglutinatum and their sructures were identified as phaeochrysin (1), (2R)-4-(3',4'-dihydroxyphenyl) -2-butanol (2), (-) -rhododendrol (3), rhododendrin (4), (+) -isolariciresinol (5), (-) -lyoniresinol (6), lyoniresinol-9'-O-β-D-xylopyranoside (7), and dihydrodehydrodiconiferyl-3a-O-α-L-rhamnopyranoside (8). Compound 1 is new, and compounds 2, 5-8 were isolated from this plant for the first time.
Drugs, Chinese Herbal ; chemistry ; Mass Spectrometry ; Molecular Structure ; Phenols ; chemistry ; Rhododendron ; chemistry

BACKGROUND:Hip arthroplasty and internal fixation are presently effective therapeutic methods in treatment of femoral neck fracture in the elderly. However, which method can reduce the incidence of postoperative complications remains controversial.
OBJECTIVE:To systematical y review the reoperation, postoperative complications and 1-year and 2-year mortality after hip arthroplasty and internal fixation in the elderly with femoral neck fracture.
METHODS:Pubmed/Medline, EMBASE, and Cochrane CENTRAL databases were retrieved by computer for articles published before May 2013. Systematic review on randomized control ed trials of hip arthroplasty versus internal fixation for femoral neck fractures in the elderly was conducted using the Cochrane Col aboration’s RevMan 5.2 software. Outcome measures included reoperation, main complications related to the surgery and mortality.
RESULTS AND CONCLUSION:Six published randomized control ed trials of nine literatures containing 1 496 cases were involved in this review. Meta-analysis results indicated that reoperation rate was greater in the internal fixation group within and more than 2 years after the surgery compared with the hip arthroplasty group (P<0.000 01). Compared with hip arthroplasty group, internal fixation significantly increased the main complications related to the surgery [OR=8.79, 95%CI(6.50-11.88), P<0.000 01]. No significant difference in 1-year and 2-year mortality after surgery was detected between the internal fixation and hip arthroplasty groups [OR=0.85, 95%CI(0.66-1.11), P=0.23;OR=0.88, 95%CI(0.70-1.10), P=0.27]. These data suggested that the long-term reoperation rate and incidence of main complications were obviously higher in internal fixation compared with hip arthroplasty for femoral neck fracture in the elderly, and no significant difference in 1-year and 2-year mortality after the surgery was detectable between the two methods. Clinical recommended hip arthroplasty in the repair of femoral neck fracture in the elderly.

Objective To investigate the typical value of gamma-radiation dose rate and its confidence interval in tank-transported copper ore by using bootstrap resampling techniques. Methods Bootstrap resampling method, coupled with kernel density estimation, introduced to acquire the typical value of gamma-radiation dose rate in copper ore. Results The typical value of gamma-radiation dose rate in copper ore was expressed as the central tendency of the means of resampling, and two kinds of confidence interval, empirical percentile and bias-corrected accelerated confidence interval, were provided as standard error. Conclusion It is clearly demonstrated that this method has an advantage to give a robust description in explanation of central tendency and variation range of gamma-radiation dose rate data profiles.

OBJECTIVE To investigate the relationship between the anti-post-traumatic stress disorder(PTSD)effect of sertraline and nitric oxide in fear conditioning rats. METHODS Conditioned fear stress was established by electric shock with a cue tone,and fear extinction training was carried out by giving the rats only tone signals the next day. The rats were treated with sertraline(15 mg · kg-1) intragastrically within 1 h before the experiment for 8 d. Freezing time was tested at the 1st,4th and 7th day after the extinction training in rats. The NO contents were detected by Griess method and the nNOS and iNOS level on amygdala was detected by Western blotting. RESULTS The behavior tests showed that compared with normal control group ,the freezing time was significantly increased in extinction control group and extinction training group(P<0.01),indicating that the conditioned fear model of rats was successfully established. At the 1st and 4th day after conditioned fear extinction training in the rats,freezing time in sertraline(15 mg·kg-1)group was decreased compared with extinction training group (P<0.05). At the 7th day,the freezing time was significantly decreased(P<0.01),indicating that ser?traline reversed the fear response. At the same time,the contents of NO,nNOS and iNOS on amygdala of rats in sertraline group were lower than that in extinction training group(P<0.01). CONCLUSION Sertraline can promote extinction of conditioned fear memory,suggesting that sertraline has anti-PTSD effects on the model of fear condition in rats. The underlying mechanisms may be connected with NO.

Objective To investigate the characteristics of hepatitis C viurs (HCV)infection and its genotypes in Yancheng area . Methods A total of 20 185 cases of subjects receiving healthy examination were collected ,and fasting blood levels of serum anti‐HCV were detected .Clinical data of patients with HCV infection were statistically analysed .HCV genotypes and levels of HCV RNA were detected ,and their clinical prognosis was judged by type‐B ultrasonic .Results The total infection rate of HCV was 1 .22% .The infection rate of male was higher than that of female and the infection rate was increased with the elevation of age .The genotype 1b was accounted for 73 .17% .The results of type‐B ultrasonic shown that all patients infected with genotype 6 and 1b/2a HCV only had liver damage .80 .77% of patients infected with genotype 2a HCV had liver damage ,which was higher than that of patients infected with 16 and 3a+3b genotypes .Conclusion Most of HCV infected patients are male ,and the infection rate might be increased with the elevation of age .The prognosis is in various different genotypes of HCV ,which indicates that the prognosis could be evaluated by genotyping .

A method was proposed for the separation and determination of paraffin waxes in food by HPLC-evaporative light scattering detection (ELSD). A normal-phase column was used to separate nonparaffinic and paraffinic materials without resolving the latter into individual components. The t-test method was adopted for the evaluation of mean difference between response factors of n-alkanes in paraffin waxes on ELSD detector. No mean difference was obtained between response factors, which can be used for quantitative determination of paraffin waxes in food. The determination results obtained by HPLC-ELSD were compared with those by GC-MS. The linear range for the determination of paraffin waxes was in the range from 10 to 500 mg/L with a correlation coefficient of 0.9988, and the limit of detection was 1.0 mg/L. With the spiking level of 10, 50 and 100 mg/kg, the recovery ranged from 84.6% to 105.4% and the relative standard deviation ranging from 5.4% to 7.2%. The proposed method is simple, fast and sensitive.

BACKGROUND: Blood stem cells (BSCs) are the most primitive cells in the immune system and can be differentiated into many kinds of cells. As the regulatory cells of immune response, dendritic cells (DCs) have been attracted more and more attention in the field of autoimmune diseases. Due to different resources of precursor cells, DCs have different cytokines, ideal cytokine matching,applying orders, and experimental cultured conditions. Furthermore, development, phenotypic expression, and mature degree are still different.OBJECTIVE: To investigate the influence of tumor necrosis factor- α (TNF- a ) and interleukin-4 (IL-4) on the culture system and provide improved method for inducing functional DCs in vitro, derived from cord blood CD34+ hematopoietic precursor cells (HPC).DESIGN, TIME AND SETTING: Observational study, which was performed in the Department of Microbiology and Immunology, Nanjing Medical University from March 2005 to November 2005.MATERIALS: The cord blood was collected from neonatal umbilical cord in the 81 Hospital of Nanjing City. CD34 monoclonal antibody coated magnetic bead system (MACS) was provided by Miltenyi Biotec Company, Germany; human recombinant granulocyte-macrophage colony-stimulating factor (rhGM-CSF), human recombinant interleukin-4 (rhlL-4), and human recombinant tumor necrosis factor-α (rhTNF-α) by Pepro Tech Company, USA.METHODS: CD34+HPC were isolated and purified from umbilical cord blood by using a high-gradient magnetic cell sorting system (MACS). Then the cells were cultured with different culture medium which contained different combinations of cytokines:GM-CSF and TNF-α (GT) or GM-CSF, TNF-α and IL-α (GTI) in order to be induced to differentiate into dendritic cells (DCs).The DCs derived from CD34+HPC were identified for their morphology and phcnotype by FACS and laser scanning con_focal fluorescence microscopy, and also for their abilities of inducing proliferation of allogenic T cells by 3H-TdR incorporation assay.RESULTS: The purity of selected CD34+ cells with MACS was more than 90%. DCs could be obtained from CD34+HPC by the culture in presence of GM-CSF and TNF-α or GM-CSF, TNF- o and IL-4. With the time of culture lasting, the cells expressed lower level surface antigen of CD34 and HLA-DR (P ＜ 0.05), and possessed the phenotypes of DCs characterized by higher expression of CD80, CD86, CD83 and CDIa. At 13-15 days, the cells possessed higher level of phenotypes of DCs compared to 7-9 days and 10-12 days. DCs induced with GTI culture system expressed higher levels of surface antigen CD80, CD86, CD83,CD 1 a and a lower level of CD 14 than those induced with GT culture system. DCs displayed typical morphology and property and expressed higher level surface antigen of CD86 and CD80, especially expressed CD86 when they were induced with proper cytokines of GM-CSF and TNF- α added at 0 hour, and of IL-4 added at 48 hours.CONCLUSION: DCs can be generated from CD34+HPC by proper culture system, the design of GM-CSF + TNF- α + IL-4(GM-CSF and TNF- α were added at 0 hour, IL-4 was added at 48 hours) is preferred.

Objective To observe the correlation between non-high density lipoprotein cholesterol levels and coronary artery disease(CAD),extent of angiographic coronary artery lesions and risk factors of CAD.Methods Serum total cholesterol ( TC ),triglyceride ( TG),high density lipoprotein cholesterol ( HDL-C ),low density lipoprotein (LDL-C),Lp(a),apoA-1 and apo B levels were measured in 282 patients with angiographic CAD meanwhile in 129 normal controls without angiographic coronary artery lesions.Non-HDL-C and LDL-C/HDL ratio was calculated.Logistic regression and partial correlation were used to find the correlation of serum non-HDL-C with CAD.Results Non-HDL-C[ (3.40 ± 1.01 ) mmol/L vs (3.08 ±0.65)mmol/L,P ＜0.05],LDL-C[ (2.63 ±0.84) mmo/L vs (2.40 ±0.54) mmol/L,P ＜0.05 ],TC[ (4.48 ± 1.07)mmol/L vs (4.23 ±0.69) mmol/L,P ＜0.05 ],and LDL-C/HDL ratio [ ( 2.52 ± 0.96) vs (2.21 ± 0.74 ),P ＜ 0.05 ] were significantly higher in the CAD group than in the control group.The four indexes also showed an increasing trend in the sequence of single,double and triple vessel lesions.Multivariate Logistic regression analysis found that among lipid factors,only non-HDL-C was independently associated with CAD.The results of partial correlation analysis demonstrated that non-HDL-C was positively correlated to the number of lesions( r =0.250,P ＜0.01 )and gensini score of CAD( r =0.116,P ＜0.05 ).Conclusion Non-HDL-C level is an independent risk factor for CAD and significantly correlated with the severity of CAD.

Objective To observe the protection of human keratinocyte cell line, HaCaT cell, from UVA damage by resveratrol and its possible mechanism. Methods HaCaT cells were incubated with or without 0.01 mmol/L or 0.1 mmol/L resveratrol after exposure to 5 J/cm2 UVA irradiation. Unirradiated HaCaT cells-without the treatment with resveratrol served as the control. After another 24-hour culture, MTT assay was used to detect the proliferation of cells, RT-PCR and Western-blot to measure the iNOS mRNA and protein expression respectively, electron microscopic technique to observe the changes in cell ultrastructure. Results After irradiation with UVA of 5 J/cm2, the proliferation of HaCaT cells decreased with the absorbance at 490 nm descending from 0.889±0.083 to 0.542±0.004, while a significant increase was observed in the relative expression level of iNOS mRNA and protein in HaCaT cells (1.532±0.041 vs 0.009±0.003, 1.331 ±0.046 vs 0.003±0.001, both P < 0.05) with the presence of typical apoptotic cells. The treatment with 0.01 and 0.1 mmol/L resveratrol significantly promoted the proliferation of irradiated cells with the absorbance at 490 nm being 0.753±0.435 and 0.892±0.173 respectively, but inhibited the mRNA (0.853±0.038 vs 1.532±0.041, 0.392±0.033 vs 1.532±0.041, both P< 0.05) and protein expression level (0.809±0.018 vs 1.331±0.046, 0.412±0.026 vs 1.331±0.046, both P< 0.05) of iNOS in irradiated cells, and the resveratrol of 0.1 mmol/L was more effective than that ofO.01 mmol/L in all tested parameters (P< 0.05). Furthermore, no apoptofic cells or necrotic cells were observed in irradiated ceils incubated with resveratrol. Conclusion Resveratrol effectively protects HaCaT cells from UVA damage, which may be related to the inhibition of UVA-induced iNOS expression by resveratrol.

AIM:To investigate the effect of signal transducer and activator of transcription 1 ( STAT 1 ) on proliferation and interferon-β(IFN-β) sensitivity of human non-small-cell lung cancer H1299 cells.METHODS:STAT1 or EGFP gene was transfected into H1299 cells by the lentiviral vectors system.The cell number was counted under a mi-croscope and cell proliferation was tested by MTT assay.In addition, the cells transfected with STAT1 and EGFP were trea-ted with IFN-βand cell viability was measured by MTT assay.The protein levels of p-STAT1, ICAM-1 and PCNA were de-tected by Western blot.RESULTS: Over-expression of STAT1 inhibited H1299 cell proliferation (P<0.05).H1299 cells transfected with STAT1 gene had a higher sensitivity to IFN-βthan the control cells transfected with EGFP ( P <0.05).Overexpression of STAT1 increased the protein level of p-STAT1, and reduced IACM-1 expression in H1299 cells. Moreover, STAT1 enhanced STAT1 phosphorylation and downregulated the expression of PCNA in H1299 cells treated with IFN-β.CONCLUSION:STAT1 inhibits the proliferation and enhances the IFN-βsensitivity of non-small-cell lung cancer H1299 cells.