[Correlation of the degree of band 3 protein absence on erythrocyte membrane by eosin-5'-maleimide binding test and clinical phenotype in hereditary spherocytosis]

目的

探讨伊红-5′-马来酰亚胺标记的流式细胞术（EMA结合试验）检测红细胞膜骨架带3蛋白缺失程度与遗传性球形红细胞增多症（hereditary spherocytosis，HS）临床表现型的关系。

方法

分析258例未行脾切除术治疗的HS患者临床和实验室特征，评估EMA结合试验结果与贫血程度、溶血和造血代偿参数的关系。

结果

258例HS患者中，男128例，女130例，中位年龄23（2~70）岁。代偿性溶血91例、轻度贫血53例、中度贫血78例、重度贫血36例。EMA结合试验荧光强度减低中位数为29.97%（16.09%~47.34%），平均数为（29.70±6.28）%。荧光强度减低程度与红细胞平均体积呈负相关（r=−0.343，P<0.001），与红细胞平均血红蛋白浓度呈正相关（r=0.223，P<0.001），与网织红细胞比例（r=−0.015，P=0.813）和绝对值（r=0.080，P=0.198）均无明显相关性，与血清间接胆红素水平无明显相关（r=−0.009，P=0.902），与HGB水平无明显相关性（r=−0.067，P=0.280）。按EMA标记缺失程度四分位区间分组，不同EMA标记缺失组与HS贫血严重程度分组亦无明显相关性（C=0.150，P=0.746）。

结论

EMA结合试验结果与HS贫血程度无关。

[Comparison of efficacy and safety of two different dose of recombinant human thrombopoietin regimens in severe aplastic anemia patients with immunosuppressive therapy]

目的

比较不同重组人TPO（rhTPO）方案联合免疫抑制剂治疗重型再生障碍性贫血（SAA）的近期疗效。

方法

回顾性分析接受一线免疫抑制治疗（IST）的61例成人SAA初诊患者资料，对比分析18例IST联合rhTPO每日1次（连续组）与43例IST联合rhTPO隔日1次（间日组）患者的疗效差异。

结果

两组患者在IST前基础临床特征差异无统计学意义。IST后3个月和6个月进行疗效评估，连续组与间日组患者总体血液学反应率比较差异无统计学意义（3个月：50.0%对51.2%，P= 0.934；6个月：77.8%对69.8%，P=0.525）。连续组IST后3个月良好血液学反应率明显高于间日组（38.9%对9.3%，P=0.011）。rhTPO应用后4周和8周两组脱离红细胞输注率差异无统计学意义（4周：22.2%对18.6%，P=0.736; 8周：55.6%对46.5%，P=0.519），而治疗后8周脱离血小板输注率连续组明显高于间日组（88.9%对48.8%，P=0.003）。每日连续应用rhTPO治疗并不增加不良反应事件的发生。

结论

每日1次较隔日1次应用rhTPO促进SAA造血恢复和减少血小板输注依赖更为有效。

[Analysis of the compliance of chronic rhinosinusitis surgical treatment for adults]

Objective:To investigate the factors which effect the compliance of treatment for chronic rhinosinusitis(CRS) patients. Method:Offering disease education to 386 patients who suffered from CRS, then find out the reason why some of them refuse to accept surgery through a half-year follow-up by phone and analysis the clinical information. Result:One hundred and ninety-seven accepted surgery while.Not among 386 patients the compliance rate was 51.04%，we found out that the factors affecting compliance were educational level and VAS scale using χ² test and logistic regression. Conclusion:Patients with higher educational level, lower VAS score,turned to be less compliable; and we should still work on how to improve the patients' compliance.

[Clinical characteristics and prognosis in 12 patients with adult T cell leukemia/lymphoma confirmed by HTLV-1 provirus gene detection]

Objective: To analyze the clinical characteristics and prognosis of adult T cell leukemia/lymphoma (ATLL). Methods: Peripheral blood samples from patients who were suspected as ATLL from March, 2013 to July, 2015, were collected for HTLV-1 provirus genes detection in genomic DNA extraction by PCR. Cases showing positive results were confirmed as ATLL. Clinical and laboratory characteristics, therapeutic outcomes and survival evaluation were collected. Results: 12 out of 23 suspected patients were confirmedly diagnosed as ATLL through HTLV-1 provirus genes detection by PCR. Eight patients were male and four patients were female. Median age was 51 (range 28-66) years old. All of those patients came from coastal cities of Fujian province where a HTLV-1 epidemic area locates. In the subtype classification of these 12 ATLL, 11 patients were classified as acute type and one case as lymphoma type ATLL. As one of the clinical characteristics of ATLL, ' flower cells ', with typical or atypical morphology had been observed in a high rate (81.8%). Clinical symptom such as hepatomegaly, splenomegaly and lymphadenectasis were detected in most of patients, and hypercalcemia and elevated LDH were also noted commonly. The ATLL cells immunophenotype were typical, and the major subtype was CD4+ CD8- type. Confection of hepatitis B virus was detected in a high rate (54.5%). Ten patients received chemotherapy, and 2 cases in complete remission after chemotherapy received allogeneic hematopoietic stem cell transplantation. At the end of the follow-up, 7 cases died, 4 cases survived, 1 case was lost, and the median survival was 2.8 (0.9-10.8) months. We found a case had HTLV-1 provirus negative after transplantation. Conclusion: In the coastal area of Fujian Province, ATLL is not rare. Characteristics of those ATLL are typical. But prognosis is still unsatisfactory.

Expression profile analysis of ascorbic acid-related genes in response to temperature stress in the tea plant, Camellia sinensis (L.) O. Kuntze

Ascorbic acid (AsA), also known as ascorbate or vitamin C, is a natural organic compound in green plants that has antioxidant properties, and is an essential nutrient for humans. The tea plant, Camellia sinensis (L.) O. Kuntze, is an important global economic crop. Here, the expression profiles of genes related to AsA biosynthesis and recycling were analyzed in tea plants in response to temperature stress. Eighteen genes involved in AsA biosynthesis and recycling pathways were identified based on the transcriptome database. The expression levels of CsPGI1 in two varieties of tea plants ('Yingshuang' and 'Huangjinya') increased, peaked at 4 h, and then decreased in response to cold stress. In 'Yingshuang', the genes involved in AsA biosynthesis pathway rapidly responded to heat stress and substantially increased their expression levels at 1 h. The expression levels of CsMDHAR, CsDHAR1, and CsDHAR2 increased sharply at 1 h in response to heat stress in 'Yingshuang'. In contrast, the expression levels of CsMDHAR, CsDHAR1, and CsDHAR2 in 'Huangjinya' gradually increased during heat treatment from 1 to 24 h. The expression trends of two DHAR isoforms differed in 'Huangjinya' during cold stress. The expression patterns of AsA-related genes differed in the different tea plant varieties and depended on temperature. The genes involved in AsA biosynthesis and recycling pathways were induced by heat and cold stress. Our study provides useful data with which to improve the resistance of tea plants to cold and heat stress.

[Application of three risk assessment models in occupational health risk assessment of dimethylformamide]

Objective: To investigate the application of United States Environmental Protection Agency (EPA) inhalation risk assessment model, Singapore semi-quantitative risk assessment model, and occupational hazards risk assessment index method in occupational health risk in enterprises using dimethylformamide (DMF) in a certain area in Jiangsu, China, and to put forward related risk control measures. Methods: The industries involving DMF exposure in Jiangsu province were chosen as the evaluation objects in 2013 and three risk assessment models were used in the evaluation. EPA inhalation risk assessment model: HQ=EC/RfC; Singapore semi-quantitative risk assessment model: Risk= (HR×ER) ^1/2; Occupational hazards risk assessment index=2^{Health effect level}×2^{exposure ratio}×Operation condition level. Results: The results of hazard quotient (HQ>1) from EPA inhalation risk assessment model suggested that all the workshops (dry method, wet method and printing) and work positions (pasting, burdening, unreeling, rolling, assisting) were high risk. The results of Singapore semi-quantitative risk assessment model indicated that the workshop risk level of dry method, wet method and printing were 3.5 (high) , 3.5 (high) and 2.8 (general) , and position risk level of pasting, burdening, unreeling, rolling, assisting were 4 (high) , 4 (high) , 2.8 (general) , 2.8 (general) and 2.8 (general) . The results of occupational hazards risk assessment index method demonstrated that the position risk index of pasting, burdening, unreeling, rolling, assisting were 42 (high) , 33 (high) , 23 (middle) , 21 (middle) and 22 (middle) . The results of Singapore semi-quantitative risk assessment model and occupational hazards risk assessment index method were similar, while EPA inhalation risk assessment model indicated all the workshops and positions were high risk. Conclusion: The occupational hazards risk assessment index method fully considers health effects, exposure, and operating conditions and can comprehensively and accurately evaluate occupational health risk caused by DMF.

[The expression of MiR-148a in nasopharyngeal carcinoma and its effect on tumor cell biology functions in nasopharyngeal carcinoma]

Objective:Nasopharyngeal carcinoma(NPC) is a common malignant tumor, in recent years,most of studies have found that micro RNA played an important role in the development of NPC.This study was to explore the expression level of MiR-148a and its effect on the biological functions of NPC cells.Method:The expression of MiR-148a in NPC cell line CNE2 was detected by Real-time PCR method.MTT,clone formation assay and flow cytometry were applied to detect cell proliferation and apoptosis. We predicted that EGFR was the downstream target genes of MiR-148a through the analysis of bioinformatics software. Then the expression change of EGFR was measured by Real-time PCR and Western blot.Result:Comparing with normal nasopharyngeal epithelial tissue cells,MiR-148a expression level was significantly reduced in NPC cell line CNE2.MTT,clone formation assay and flow cytometry test show that overexpression of MiR-148a can inhibit cell proliferation and promote cell apoptosis.Real-time PCR and Western blot test show that MiR 148a can reduce the expression of EGFR.Conclusion:MiR-148a can affect the proliferation and apoptosis of NPC cell,and it is likely to be involved in the development and progression of NPC.

[The clinical application of balloon dilation Eustachian tuboplasty in patients with Eustachian tube dysfunction]

Objective:To evaluate the clinical application of balloon dilation Eustachian tuboplasty (BET) in patients with Eustachian tube dysfunction (ETD). Method:Twenty-five patients who were diagnosed as ETD and reserved BET surgery were retrospectively analyzed in this study. Result:After 1-year's follow-up, among 25 ETD patients, the total cure rate was 55.9% and the effective rate was 85.3%. The cure rate and effective rate was 52.9% and 76.5% in the delayed opening of the ET group; 58.8% and 94.1% in the unopened group, which was higher than the other one. Conclusion:BET surgery is safe and effective in the treatment of BET patients.

The association between the -2518A/G polymorphism in the MCP-1 gene and the risk of pulmonary tuberculosis in Sichuan Chinese population

OBJECTIVE

The -2518A/G polymorphism in the Monocyte chemotactic protein-1 (MCP-1) gene may play an important role in regulating immunological reactions and may be associated with pulmonary tuberculosis (PTB). However, the relationship for the populations in Sichuan province of China remains unknown. The objective of the current study was to analysis that association.

PATIENTS AND METHODS

A total of 386 PTB patients and 398 controls were recruited. The genotypes were identified using PCR-RFLP and sequencing method. Data was analyzed using SPSS 11.0 software.

RESULTS

Significant association was found between the polymorphism and the risk of PTB: AG vs. AA: OR = 1.37, 95% CI = 0.98-1.92 and p = 0.06; GG vs. AA: OR = 1.69, 95% CI = 1.14-2.50 and p = 0.009; AG+GG vs. AA: OR = 1.47, 95% CI = 1.07-2.01 and p = 0.02; G vs. A: OR = 1.31, 95% CI = 1.08-1.60 and p = 0.007.

CONCLUSIONS

The current study suggested that the 2518A/G polymorphism in the MCP-1 gene was associated with risk of PTB in population of Sichuan province in China.

Step-edge self-assembly during graphene nucleation on a nickel surface: QM/MD simulations

Quantum chemical molecular dynamics simulations of graphene nucleation on the Ni(111) surface show that graphene creates its own step-edge as it forms. This "step-edge self-assembly" is driven by the formation of thermodynamically favorable Ni-C σ-bonds at the graphene edge. This dynamic aspect of the Ni(111) catalyst is in contrast to the commonly accepted view that graphene nucleates on a pre-existing, static catalyst step-edge. Simulations also show that, simply by manipulating the subsurface carbon density, preferential formation of single-layer graphene instead of multi-layer graphene can be achieved on nickel catalysts.

Computational study on redox-switchable second-order nonlinear optical properties of ferrocene-tetrathiafulvalene hybrid

Redox-switchable second-order nonlinear optical (NLO) responses of a series of ferrocene-tetrathiafulvalene (Fc–TTF) hybrids have been studied based on density functional theory calculations.

First Report of Coleus blumei viroid 5 from Coleus blumei in India and Indonesia

Coleus blumei, which was found originally in Indonesia, is an ornamental plant grown worldwide. It can be infected by several viroids of the genus Coleviroid, family Pospiviroidae. Six main viroids that infect coleus have been reported: Coleus blumei viroid 1 through 6 (CbVd-1 ~ CbVd-6). Although CbVd-1 was first reported in a commercial coleus in Brazil in 1989 (1), and then in Germany, Japan, Canada, Korea, China, and India, CbVd-5 was reported only in China in 2009 (2). Symptoms caused by CbVd-5 varied depending on different cultivars, and in case of an unknown cultivar of "Red with dark green edge," are very clear albino symptoms. From 2010 to 2011, 60 and 3 leaf samples of coleus were collected from Hyderabad, India, and Java, Indonesia, respectively, and subjected to low molecular weight RNA extraction according to Li et al. (3). The results of dot-blot hybridization using CbVd-5 cRNA probes and RT-PCR using CbVd-5 specific primers (CbVd-5-P_F: 5'-TGACTAGAACAGTAGTAAAG-3' / CbVd-5-P_R: 5'-AATTGAGGTCAAACCTCTTT-3') demonstrated that 28 out of the 60 samples from India and all three samples from Indonesia were positive for CbVd-5. The resulting RT-PCR fragments from one sample selected randomly from each country were cloned into the pMD18-T vector (Takara) and transformed into E. coli DH5α competent cells. Five positive clones of each sample were sequenced. The result of sequence analysis revealed that the similarities of CbVd-5 between the sequences we obtained and the reference sequence (GenBank Accession No. NC003683) were 97.8 to 100%. Bioassay using nine viroid-free coleus plants from three cultivars (three from each cultivar), inoculated with CbVd-5 infectious clones by stem slashing, demonstrated that CbVd-5 could induce albino symptom on the leaves of the unknown cultivar "Red with dark green edge" 2 months after inoculation. To our knowledge, this is the first report of CbVd-5 from India and Indonesia, and the second report of CbVd-5 in the world. Considering the effect of CbVd-5 on the appearance of coleus and its recombination ability, a certification program may be needed to control the spread of this viroid. References: (1) M. E. N. Fonseca et al. Fitopatol. Bras. 14:94, 1989. (2) W. Y. Hou et al. Arch. Virol. 154:315, 2009. (3) S. F. Li et al. Ann. Phytopathol. Soc. Jpn. 61:381, 1995.

First Report of Kudzu mosaic virus on Pueraria montana (Kudzu) in China

Kudzu (Pueraria montana), a weed widely distributed in southern China, is common in the Fuzhou region of Fujian Province, where many plants show yellow vein mosaic disease. In September 2008, four leaf samples from different plants exhibiting yellow vein mosaic symptom were collected in suburban district of Fuzhou (25°15' N, 118°08' E). Whitefly (Bemisia tabaci) infestation was also observed in this region. Total DNA was extracted from all samples using a CTAB method (4). Universal primers (PA/PB) were used to amplify part of the intergenic region and coat protein gene of DNA-A of begomoviruses (1). An amplicon of approximately 500 bp was obtained from all four samples and then sequenced. Comparison of 500-bp fragments (GenBank Accession Nos. FJ539016-18 and FJ539014) revealed the presence of the same virus (98.8 to 99.4%). A pair of back-to-back primers (Yg3FL-F: 5'-GGATCCTTTGTTGAACGCCTTTCC-3'/Yg3FL-R: 5'-GGATCCCACATGTTTAAAGTAAAGC-3') were designed to amplify the full-length DNA-A from the Chinese isolate identified as Yg3. Sequence analysis showed that full-length DNA-A of Yg3 isolate comprised 2,729 nucleotides (GenBank Accession No. FJ539014) and shared the highest nucleotide sequence identity (91.9%) with Kudzu mosaic virus (KuMV, GenBank Accession No. DQ641690) from Vietnam. To further test the association of DNA-B fragments with the four samples from southern China, rolling circle amplification (RCA) was performed (3). When RCA products were digested with Sph I, approximately 2.7 kb was obtained from all samples. Yg3 isolate was chosen to be sequenced. Sequence analysis showed that full-length DNA-B of Yg3 isolate comprised 2,677 nucleotides (GenBank Accession No. FJ539015) and shared the highest nucleotide sequence identity (76.8%) with KuMV DNA-B (GenBank Accession No. DQ641691) from Vietnam. Based on the current convention of begomovirus species demarcation of <89% sequence identity cut-off criterion (2), Yg3 was identified as an isolate of KuMV. To our knowledge, this is the first report of association of KuMV with yellow vein mosaic symptom of kudzu in China. References: (1). D. Deng et al. Annals Appl. Biol. 125:327, 1994. (2). C. M. Fauquet et al. Arch. Virol. 148:405, 2003. (3). D. Haible et al. J. Virol. Methods 135:9, 2006. (4). Y. Xie et al. Chinese Sci. Bull. 47:197, 2002.

Effect of secondary ligands' size on energy transfer and electroluminescent efficiencies for a series of europium(III) complexes, a density functional theory study

In this paper, a quantum chemistry method was used to investigate the effect of different sizes of substituted phenanthrolines on absorption, energy transfer, and the electroluminescent performance of a series of Eu(TTA)(3)L (L = [1,10] phenanthroline (Phen), Pyrazino[2,3-f][1,10]phenanthroline (PyPhen), 2-methylprrazino[2,3-f][1,10]phenanthroline(MPP), dipyrido[3,2-a:2',3'-c]phenazine(DPPz), 11-methyldipyrido[3,2-a:2',3'-c]phenazine(MDPz), 11.12-dimethyldipyrido[3,2-a:2',3'-c]phenazine(DDPz), and benzo[i]dipyrido[3,2-a:2',3'-c]phenazine (BDPz)) complexes. Absorption spectra calculations show that different sizes of secondary ligands have different effects on transition characters, intensities, and absorption peak positions. The larger secondary ligands DPPz, MDPz, DDPz and BDPz lead to incomplete energy transfer from the triplet states of ligands to the (5)D(0) of the Eu(3+) ion compared with smaller ones (PyPhen and MPP) due to their lower S(1) or T(1) state energy levels than that of TTA or (5)D(0) of Eu(3+). "Small polaron" stabilization energy (SPE) results reveal that electron trapping is the dominant electroluminescence (EL) mechanism in these materials due to their lower LUMO energies than 4,4'-N,N'-dicarbazolebiphenyl (CBP). Reorganization energy (l) values show that these materials have better electron than hole transporting properties. In addition, the reasons for the origin of the 500 nm emission in Eu-PyPhen- and Eu-MPP-based OLED devices were investigated, and we suppose this emission may result from 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), not from Alq(3).

[Effect of octadecyl amine (ODA) on the complex titration of magnesium and calcium ions studied with UV-visible spectrophotometry]

The effect of flotation agent octadecyl amine (ODA) on the complex titration of both magnesium and calcium ions was studied with two groups of comparative experiments: (1) Before titration, the suspension was not filtered. In this case, ODA had a great effect on the complex titration of both magnesium and calcium ions. The titration end-point of magnesium ions was difficult to be determined. Although the titration end-point of calcium ions could be determined, there was an obvious experimental error compared with the blank solution without ODA. These results were confirmed by the UV-Visible spectrum analyses of the related solutions. (2) Before titration, the suspension was filtered. In this case, the influence of ODA on the complex titration of both magnesium and calcium ions could be removed. UV-Visible spectrum studies showed that, in this case, both the spectra and time scanning curves of the tested solutions were similar to those of the blank solutions.