Epidemiological characteristics of human adenovirus 2, 3 and 7 genetypes in hospitalized children with respiratory infection in a hospital of pediatric in Hebei Province from 2018 to 2020 / 中华预防医学杂志

Objective: To investigate the epidemiological characteristics of human adenovirus (HADV) 2, 3 and 7 in hospitalized children with respiratory infection. Methods: A total of 25 686 children with respiratory infection hospitalized at Children's Hospital of Hebei Province from January 2018 to December 2020 were retrospectively included.Deep sputum or nasopharyngeal aspirates of those children were collected. Then thirteen common respiratory pathogens were detected by multiplex PCR. 510 HADV positive specimens were randomly selected via random number and classified for type 2, 3 and 7 using a multiplex real-time quantitative PCR. SPSS 21.0 software was used to perform all of the statistical analyses. Enumeration data were expressed by frequency and percentage. χ2 test was used for comparison between groups. Results: The HADV-positive rate was 7.99% (2 052/25 686). Children at age 3-<6 years had the highest HADV-positive rate (11.44%). The HADV-positive rate in 2019 was highest (10.64%). Among the 510 HADV-positive specimens, the proportion of type 3 was the highest (31.16%), followed by type 7 (21.37%) and type 2 (11.18%). The rate of type 2 in 2019 was significantly lower than that in 2018 and 2020 (χ2=8.954 and 16.354; P=0.003 and <0.01), while the rate of type 3 was significantly higher than that in 2018 and 2020 (χ2=5.248 and 4.811; P=0.022 and 0.028). The rate of type 2, type 3 and type 7 were lowest in winter, spring and autumn, respectively. The rate of type 2 increased significantly in autumn and the rate of type 3 and type 7 increased significantly in winter.The co-detection rate of HADV with other respiratory pathogens was 43.33%(221/510). Among, the co-detection rate of type 3 was highest (47.32%), and the co-detection rate of type 2, 3 and 7 was significantly higher than the alone detection rate (χ2=20.438, P<0.01; χ2=42.105, P<0.01; χ2=27.573, P<0.01).The proportion of severe pneumonia in children with type 7 positive (15.89%) was higher than that in children with non-type 7 positive (8.23%) (χ2=5.260, P=0.022). Conclusion: HADV is one of the important pathogens of children with respiratory infection in Children's Hospital of Hebei Province. The susceptible population of HADV is preschool children aged 3 to 6 years. HADV often co-detects with other respiratory pathogens. Type 3 and 7 is likely to be the dominant genotypes in this region, and type 7 may be one of the risk factors of severe pneumonia in children.

Clinical Features of Infection in Newly Diagnosed Patients with Myelodysplastic Syndrome and Its Correlation with Curative Effect / 中国实验血液学杂志

OBJECTIVE@#To explore the characteristics of infection in patients with myelodysplastic syndromes (MDS), risk factors of serious infection, and their correlation with curative effect.@*METHODS@#The clinical data of 92 newly diagnosed MDS patients with nosocomial infection from January 2016 to June 2020 in our hospital were retrospectively analyzed.@*RESULTS@#A total of 306 courses of treatment were completed in 92 newly diagnosed MDS patients. The infection rate was the highest in the first course of treatment (84.8%, 78/92), and then decreased gradually. The top three infection sites were lung, upper respiratory tract, and gastrointestinal tract. A total of 90 strains of pathogenic bacteria were detected, of which 33.4% (30/90) were gram-negative bacilli, 23.3% (21/90) were gram-positive cocci, 23.3% (21/90) were fungi, and 20.0% (18/90) were viruses. The serious infection rate among 92 patients with MDS was 22.8% (21/92). Multivariate analysis showed that neutrophil deficiency>7 days (OR=10.875, 95%CI: 2.747-43.051, P=0.001) was an independent risk factor for serious infection in MDS patients. Compared with non-severe infection group, the total effective rate of severe infection group was lower (90.9% vs 63.6%, χ2=4.393, P<0.05).@*CONCLUSION@#The infection rate of MDS patients is high in the first course of treatment, and the most common infection site is the lung. Gram-negative bacteria is the most common pathogen. MDS patients with neutrophil deficiency>7 days have a high risk of serious infection and poor efficacy.

Effect of transcutaneous auricular vagus nerve stimulation on nocturnal autonomic nervous function in primary insomnia patients / 中国针灸

OBJECTIVE@#To observe the effect of transcutaneous auricular vagus nerve stimulation (taVNS) on the sleep quality and nocturnal heart rate variability (HRV) in patients with primary insomnia.@*METHODS@#Twenty-one patients with primary insomnia were included. Using SDZ-ⅡB electric acupuncture apparatus, Xin (CO15) and Shen (CO10) were stimulated with disperse-dense wave, 4 Hz/ 20 Hz in frequency, (0.2±30%) ms of pulse width and tolerable intensity. Electric stimulation was given once every morning and evening of a day, 30 min each time, for 4 weeks totally. Before and after treatment, the score of Pittsburgh sleep quality index (PSQI), objective sleep structure (total sleep time [TST], sleep latency [SL], wake after sleep onset [WASO], sleep efficiency [SE], the percentages of non-rapid eye movement period 1, 2, 3, and the percentage of rapid eye movement period to TST [N1%, N2%, N3%, REM%] ) and nocturnal HRV (high frequency [HF], low frequency [LF], the ratio of LF to HF [LF/HF], standard deviation for the normal RR intervals [SDNN], squared root of the mean sum of squares of differences between adjacent intervals RR [RMSSD], the percentage of adjacent RR intervals with differences larger than 50 ms in the entire recording [PNN50%], the mean of sinus RR intervals [NNMean] ) were compared in the patients separately.@*RESULTS@#After treatment, the score of each item and the total score of PSQI and SL were all reduced as compared with those before treatment (P<0.01, P<0.001); SE, N3%, LF, HF, LF/HF, SDNN, NNMean and RMSSD were all increased compared with those before treatment (P<0.001, P<0.01).@*CONCLUSION@#The taVNS improves the sleep quality and objective sleep structure in patients with primary insomnia, which is probably related to the regulation of autonomic nervous functions.

Effect of combined application of inorganic and organic fertilizers on growth and quality of Salvia miltiorrhiza / 中国中药杂志

The study is aimed through field experiments to study the effect of combined application of organic and chemical fertilizers on the growth and quality of Salvia miltiorrhiza, provide ideas for reducing fertilization while increasing the efficiency as well as improving the quality of produces. The experiment included 6 treatments viz., no fertilization(CK), full application of chemical fertilizer(F), 25% orga-nic fertilizer with 75% chemical fertilizer(M25), 50% organic fertilizer with 50% chemical fertilizer(M50), 75% organic fertilizer with 25% chemical fertilizer(M75), and fully apply organic fertilizer(M100). The results showed that:(1)from the perspective of yield and economic benefits, M75 was the best and M100 second;(2)for effective components, the combined application of organic and chemical fertilizers increased the content of main water-soluble components and the total content of effective components, among which M25 and M50 were better.

The Establishment and Identification of Acute Myeloid Leukemia NOD-SCID-IL2rg / 中国实验血液学杂志

OBJECTIVE@#To establish the in vivo traceable acute myeloid leukemia mice model with Luciferase-Expressing KG1a Cells.@*METHODS@#KG1a cells with stable luciferase gene expression (called as KG1a-Luc cells) were constructed by lentivirus transfection, then sifted out by puromycin. Eighteen male NOD-SCID-IL2rg@*RESULTS@#KG1a cells expressing luciferase stably were successfully obtained. The tumor luminescence wildly spread at day 17 captured by in vivo imaging. The KG1a-Luc tumor cells could be detected in the peripheral blood of the mice, with the average percentage of (16.27±6.66)%. The morphology and pathology result showed that KG1a-Luc cells infiltrate was detected in bone marrow, spleens and livers. The survival time of the KG1a-Luc mice was notably shorter as compared with those in the control group, the median survival time was 30.5 days (95%CI: 0.008-0.260).@*CONCLUSION@#The acute myeloid leukemia NOD-SCID-IL2rg

Doxorubicin Hydrochloride Liposome-Based CHOP Regimen in the Initial Treatment of Elderly Patients with Diffuse Large B-Cell Lymphoma: A Retrospective Study / 中国实验血液学杂志

OBJECTIVE@#To evaluate the efficacy and safety of CHOP regimen based on doxorubicin hydrochloride liposome in the initial treatment of elderly patients with diffuse large B-cell lymphoma (DLBCL).@*METHODS@#Thirty-one patients with DLBCL treated from January 1, 2012 to December 31, 2019 were analyzed retrospectively, their median age was 83 (71-95) years old, and all of them were in Ⅲ-Ⅳ stage, including 17 cases who had international prognostic index (IPI) ≥ 3. The patients were treated with R-CHOP and CHOP regimens based on doxorubicin hydrochloride liposome. The efficacy and safety were evaluated during and after treatment.@*RESULTS@#A total of 219 chemotherapy cycles and 7 median cycles were performed in 31 patients. The overall response (OR) rate and complete remission (CR) rate was 80.7% (25/31) and 61.3% (19/31), respectively, as well as 2 cases (6.5%) stable, 4 cases (12.9%) progressive. The main toxicities were as follows: the incidence of grade Ⅲ -Ⅳ neutropenia was 29% (9/31); two patients (6.5%) developed degree Ⅰ-Ⅱ cardiac events, which were characterized by new degree Ⅰ atrioventricular block; there were no cardiac events requiring emergency treatment and discontinuation of chemotherapy. The 1-year, 2-year and 3-year overall survival rate was 83.9%, 77.4% and 61.3%, respectively. The 1-year, 2-year and 3-year progression-free survival rate was 77.4%, 64.5% and 61.3%, respectively.@*CONCLUSION@#The chemotherapy regimen based on doxorubicin hydrochloride liposome has better efficacy and higher cardiac safety for elderly patients with DLBCL.

Expression and Significance of BTLA and Its Ligand HVEM in Patients with Chronic Myelomonocytic Leukemia / 中国实验血液学杂志

OBJECTIVE@#To investigate the expression and significance of B and T lymphocyte weakening factor (BTLA) in patients with chronic myelomonocytic leukemia (CMML).@*METHODS@#Real-time PCR was used to detect the expression of BTLA and its ligand HVEM mRNA in 11 patients with chronic myelomonocytic leukemia and 11 normal donors. Flow cytometry was used to detect expression of BTLA and its HVEM on the cell surface of peripheral blood T lymphocytes and γδ T cells.@*RESULTS@#The median values of BTLA and its ligand HVEM mRNA expression in peripheral blood of patients with CMML were 0.009% and 559.4%, respectively, which were significantly lower than those of normal controls (0.053% and 1031%)(P<0.001). The expression level of BTLA and HVEM on cell surface of peripheral lymphocytes was not significantly different from that in normal controls (P=0.3031 and 0.2576), however, the proportion of peripheral blood T lymphocytes in patients with CMML (median: 37.73%) was significantly lower than that in controls (median 69.23%)(P=0.0005). The expression of BTLA on the surface of γδ T cells in peripheral blood of patients with CMML (median: 23.26%) was significantly lower than that of the controls (median: 52.64%) (P<0.05), and there was no significant abnormality in HVEM expression (P=0.2791).@*CONCLUSION@#The expression of BTLA and its ligand HVEM, the proportion of T lymphocytes and the expression of BTLA on the surface of γδ T cells in patients with CMML are reduced. The effects of these abnormalities on T cell function and prognosis and efficacy of patients need to be further observed.

Cloning and Bioinformatics Analysis on CDS of SUS Gene in Dioscorea opposita / 中国实验方剂学杂志

Objective: To clone CDS sequence of Dioscorea opposita SUS gene and analyze the protein structure,in order to provide a theoretical basis for the regulation mechanism of SUS gene and the synthesis mechanism of D.opposita polysaccharides.Method: Total RNA in D.opposita was extracted and reverse-transcribed into first strand of cDNA.Specific primers were designed according to an annotated SUS gene sequence obtained from the laboratory D.opposita genome database,and the coding region of the SUS gene was obtained by gene cloning technique and the protein sequence characteristics were analyzed by protein prediction analysis software.Result: A 2 448 bp gene sequence was cloned with a complete open reading frame (ORF).The gene was named DoSUS1.The formula of protein encoded by DoSUS1 gene in D.opposita was C4209H6534N1115O1205S23,and the molecular weight was 9 788.32,the total number of amino acids was 815,the theory isoelectric point (PI) was 6.10,the extinction coefficient was 110 505,the aliphatic index (AI) was 94.15,the instability index was 32.18,and the grand average of hydropathicity (GRAVY) was-0.225.It was a stable and soluble acidic protein.There were phosphorylation sites in the DoSUS1 amino acid sequence,with no transmembrane region and signal peptide.The secondary structure and the tertiary structure showed that DoSUS1 was an α class protein.Functional domain predictions showed that DoSUS1 had sucrose synthesis domain and glycosyl transfer domain.The homology alignment showed that the amino acid sequence of DoSUS1 was more than 80% similar to the amino acid sequence of the aligned monocots.The phylogenetic tree showed that DoSUS1 was closely related to SUS of monocotyledon evolution.Conclusion: The coding sequence of SUS gene was cloned from D.opposita for the first time,and its protein structure was analyzed to lay a foundation for further studying the roles of SUS in the growth and polysaccharide synthesis of D.opposita.

Study on the antifungal and mucosal repair effects of chitosan gynecological soft gel on vulvovaginal candidiasis in rats / 中国实用妇科与产科杂志

OBJECTIVE: To establish the rat model of vulvovaginal candidiasis(VVC)and evaluate the antifungal and mucosal repair effects of water-soluble chitosan gynecological soft gel(Funingkang)on VVC.METHODS: From September 2018 to December 2018,animal experiments were conducted in Beijing Obstetrics and Gynecology Hospital,Capital Medical University.Thirty female Sprague Dawley(SD)rats were randomized into five treatment groups:control,infection model,Funingkang,nystatin and estrogen groups.The drug was administered continuously for 7 days according to the grouping.Vaginal secretions were collected after treatment and the clearance rate of pathogens was calculated.Vaginal specimens were assessed by hematoxylin-eosin(HE)staining,immunohistochemistry and transmission electron microscopy.RESULTS: The negative conversion rate of pathogen in Funingkang group was 100%(6/6)one day and four days after drug withdrawal.After treatment with Funingkang,the mean thickness of vaginal mucosa was significantly increased compared with that of infected rats[(114.15±12.65)μm vs.(74.47± 28.90)μm,P=0.001],and the morphology of vaginal epithelium returned to normal.In addition,the expression of interleukin(IL)-4 and interferon(IFN)-γ kept unchanged,but IL-17(P=0.035)and non B-IgG(P=0.003)were up-regulated after treatment with Funingkang.CONCLUSION: Funingkang can effectively eliminate the pathogen of Candida albicans,repair vaginal mucosa,and regulate the innate immune response.

Regulatory Effect of Exosomes Derived from Human Umbiilcal Cord Mesenchymal Stem Cells on Treg and TH17 Cells / 中国实验血液学杂志

OBJECTIVE@#To investigate the effects of exosomes from human umbilical cord mesenchymal stem cells on the development of Treg and TH17 cells.@*METHODS@#Exosomes from the serum-free-culture supernatants of hUC-MSC were harvested by ultracentrifugation. The electron microscopy, nanoparticle tracking analysis and western blot were used to identify the hUC-MSC-exosomes, such as the morphology, the paticle chameter, and the protein content. The PBMC stimulated with anti-CD3/CD28 were incubated with the exosomes for five days, and then the percentage changes of Treg and TH17 cells were analyzed by using flow cytometry.@*RESULTS@#The hUC MSC-derived exosomes were saucer-like in morphology the averge diameter was approximately 142 nm. They were identified as positive for CD9 and CD63. Flow cytometry showed that the proportion of CD4CD25Foxp3 Treg cells in the PBMC were significantly higher, but the proportion of CD4IL17A T cells in the hUC-MSC-exosome group was obviously lower than that in the group without the hUC-MSC-exosom (control group) (P<0.05).@*CONCLUSION@#The hUC-MSC-exosomes have an immunomodulatory effect on T cells in vitro by increasing the ratio of Treg and reducing the ratio of TH17 cells, expecting the hUC-MSC-exosom as a novel cell-free target for immunotherapy.

An interlaboratory comparison study on the detection of RUNX1-RUNX1T1 fusion transcript levels and WT1 transcript levels / 中华血液学杂志

Objective: To investigate the current status and real performance of the detection of RUNX1-RUNX1T1 fusion transcript levels and WT1 transcript levels in China through interlaboratory comparison. Methods: Peking University People's Hospital (PKUPH) prepared the samples for comparison. That is, the fresh RUNX1-RUNX1T1 positive (+) bone morrow nucleated cells were serially diluted with RUNX1-RUNX1T1 negative (-) nucleated cells from different patients. Totally 23 sets with 14 different samples per set were prepared. TRIzol reagent was added in each tube and thoroughly mixed with cells for homogenization. Each laboratory simultaneously tested RUNX1-RUNX1T1 and WT1 transcript levels of one set of samples by real-time quantitative PCR method. All transcript levels were reported as the percentage of RUNX1-RUNX1T1 or WT1 transcript copies/ABL copies. Spearman correlation coefficient between the reported transcript levels of each participated laboratory and those of PKUPH was calculated. Results: ①RUNX1-RUNX1T1 comparison: 9 samples were (+) and 5 were (-) , the false negative and positive rates of the 20 participated laboratories were 0 (0/180) and 5% (5/100) , respectively. The reported transcript levels of all 9 positive samples were different among laboratories. The median reported transcript levels of 9 positive samples were from 0.060% to 176.7%, which covered 3.5-log. The ratios of each sample's highest to the lowest reported transcript levels were from 5.5 to 12.3 (one result which obviously deviated from other laboratories' results was not included) , 85% (17/20) of the laboratories had correlation coefficient ≥0.98. ②WT1 comparison: The median reported transcript levels of all 14 samples were from 0.17% to 67.6%, which covered 2.6-log. The ratios of each sample's highest to the lowest reported transcript levels were from 5.3-13.7, 62% (13/21) of the laboratories had correlation coefficient ≥0.98. ③ The relative relationship of the reported RUNX1-RUNX1T1 transcript levels between the participants and PKUPH was not always consistent with that of WT1 transcript levels. Both RUNX1-RUNX1T1 and WT1 transcript levels from 2 and 7 laboratories were individually lower than and higher than those of PKUPH, whereas for the rest 11 laboratories, one transcript level was higher than and the other was lower than that of PKUPH. Conclusion: The reported RUNX1-RUNX1T1 and WT1 transcript levels were different among laboratories for the same sample. Most of the participated laboratories reported highly consistent result with that of PKUPH. The relationship between laboratories of the different transcript levels may not be the same.

Changes of WT1 mRNA expression level in patients with myelodysplastic syndromes after hypomethylating agents and its prognostic significance / 中华血液学杂志

Objective: To monitor the WT1 mRNA level and its dynamic changes in patients with myelodysplastic syndromes (MDS) after hypomethylating agents (HMA) , as well as to assess the significance of WT1 mRNA levels and its dynamic changes in evaluating the efficacy of HMA and distinguishing the disease status of heterogeneous patients with stable disease (SD) . Methods: Bone marrow or peripheral blood samples of 56 patients with MDS who underwent hypomethylating agents (≥4 cycles) from November 2009 to March 2018 were tested by real-time quantitative polymerase chain reaction (PCR) to detect the expression of WT1 mRNA, and to observe the correlation between the dynamic changes of WT1 mRNA expression and clinical efficacy and prognosis of patients. Results: WT1 mRNA expression levels of MDS patients decreased significantly after 3 cycles of hypomethylating agent treatment. Besides, the WT1 mRNA expression levels of patients increased significantly after diseases progression. According to the dynamic changes of WT1 mRNA expression levels during SD, 45 cases could be further divided into increased group and non-increased group. In those SD patients with increased WT1 mRNA expression level, the ratio of suffering disease progression or transformation to AML was 95.65% (22/23) , whereas the ratio turned to be 9.09% (2/22) for the non-increased group (χ(2)=33.852, P<0.001) . Compared with those SD patients reporting no increase in WT1 mRNA expression level, the overall survival[17 (95%CI 11-23) months vs not reached, P<0.001] and progression-free survival [13 (95%CI 8-18) months vs not reached, P<0.001] of those SD patients reporting increase in WT1 mRNA expression level were significantly shorter. Conclusion: WT1 mRNA expression level is a useful indicator to assess the efficacy of hypomethylating agents in MDS patients. Especially in patients with SD, detection of the changes in WT1 mRNA expression level is able to predict disease progression and help to make clinical decision.

Artesunate attenuate chronic graft-versus-host disease by regulating Th17/Treg balance / 中华血液学杂志

Objective: To investigate the effects of artesunate treatment on chronic graft-versus-host disease (cGVHD). Methods: Recipient BALB/c mice received 8 × 10(6) bone marrow cells with 8×10(6) spleen cells from B10D2 mice. Artesunate solubilized in acetone was injected intraperitoneally every day at the dose of 1 mg/kg at Day 28 after BMT. The clinical scores, survival and histopathological damage were analyzed. The frequency of Th17 and Tregs in PB and spleens from the mice were evaluated by flow cytometry. In addition, CD4(+) T cells from the spleens of mice were cultured in vitro, then stimulated with artesunate, the frequency of Th17 and Tregs in these splenocytes were evaluated by flow cytometry. Results: Artesunate administration diminished clinical and histopathological damage, and improved the survival of cGVHD mice[(46.57±7.83)% vs (55.71±6.99)%, χ(2)=5.457, P=0.020]; Artesunate contributed to Tregs development [(4.45±0.04)% vs (8.40±0.23)%, t=15.679, P<0.001; (6.62±0.24)% vs (10.48±0.48)%, t=6.587, P=0.003] while decreased Th17 cells [(1.51±0.18)% vs (0.58±0.19)%, t=7.233, P<0.001; (1.48±0.38)% vs (0.71±0.18)%, t=3.653, P=0.011] expressions in both PB and spleens, and decreased the Th17/Treg ratio (0.34±0.05 vs 0.09±0.03, t=7.621, P=0.002; 0.19±0.03 vs 0.06±0.02, t=6.993, P=0.002). Moreover, artesunate suppressed the Th17 cells expressions [(0.82±0.37) % vs (3.39±1.22) %, t=4.044, P=0.007] and contributed to Tregs development [(34.63±1.29) % vs (14.28±1.69) %, t=19.119, P<0.001], and also decreased the Th17/Treg ratio (0.24±0.09 vs 0.02±0.01, t=4.780, P=0.003) in vitro. Conclusions: Artesunate suppressed the Th17 cells expressions and contributed to Tregs development, which provided new sights into the development of a novel drug for cGVHD, e.g., artemisinin.

Effect of PDK1 on biological characteristics of lung cancer A549 cells / 中国病理生理杂志

AIM:To investigate the effects of 3-phosphoinositide-dependent protein-1(PDK1)on the biologi-cal characteristics of non-small-cell lung cancer cell line A549 and the underlying mechanisms.METHODS:The expres-sion levels of PDK1 in lung normal epithelial cell line BEAS-2B and different lung cancer cell lines H 460, SPCA1 and A549 were determined by Western blot and real-time PCR.Small interfering RNA was used to down-regulated PDK1 ex-pression in the A549 cells,and then cell viability and apoptosis were measured by CCK-8 assay and flow cytometry,respec-tively.The expression of cell cycle-and apoptosis-related molecules at protein level and the activation of Akt /FoxO1 path-way were measured by Western blot.Insulin-like growth factor-1(IGF-1,one of the most potent Akt activators)was used to evaluate the interaction between PDK 1 and Akt/FoxO1 pathway.RESULTS:Compared with lung normal epithelial cell line BEAS-2B,PDK1 expression in the lung cancer cell lines was obviously increased(P<0.05).Knockdown of PDK1 suppressed cell viability and cell cycle,but promoted the apoptosis of the A 549 cells.The results of Western blot showed that the protein levels of cyclin D1,CDK4,p-Rb,Bcl-2,p-Akt and cytoplasmic p-FoxO1 were significantly decreased after knockdown of PDK1,with increases in the protein levels of P27, cleaved caspase-3 and nuclear FoxO1.Pre-incubation with IGF-1 partly reversed the effect of PDK1 knockdown on Akt/FoxO1 pathway and increased the viability of A 549 cells. CONCLUSION:In human non-small-cell lung cancer A549 cells,knockdown of PDK1 suppresses cell viability and pro-motes cell apoptosis by regulating the expression of cell cycle-and apoptosis-related molecules via Akt/FoxO1 pathway, suggesting that PDK1 may be a potential target for diagnosis and theatment of lung cancer.

Comparison of the Efficacy and Prognostic Factors of Transarterial Chemoembolization Plus Microwave Ablation versus Transarterial Chemoembolization Alone in Patients with a Large Solitary or Multinodular Hepatocellular Carcinomas

OBJECTIVE: To evaluate the efficacy and prognostic factors associated with transcatheter arterial chemoembolization (TACE) combined with microwave ablation (MWA) versus TACE alone for a large solitary or multinodular hepatocellular carcinomas (HCCs). MATERIALS AND METHODS: This retrospective study involved 258 patients with a large solitary or multinodular HCCs (not more than 10 tumors) who underwent TACE + MWA (n = 92) or TACE alone (n = 166) between July 2011 and April 2015. Local tumor control, survival outcomes, and complications were compared between the two groups. Prognostic factors for time to progression (TTP) and overall survival (OS) were evaluated by univariate and multivariate analyses. RESULTS: The median duration of follow-up was 21.2 months (range, 4–45 months). The median TTP and OS were 12.5 months and 26.6 months, respectively, for the TACE + MWA group and 6.7 months and 17.1 months, respectively, for the TACE group (p < 0.001). The 1-, 2-, and 3-year OS rates were 85.9, 59.8, and 32.6%, respectively, for the TACE + MWA group and 59.0, 40.4, and 11.4%, respectively, for the TACE group (p < 0.001). The corresponding recurrence rates were 47.8, 78.3, and 94.6% for the TACE + MWA group, respectively, and 74.7, 96.4, and 97.6%, respectively, for the TACE group (p < 0.001). Logistic regression analyses showed that the treatment method, tumor size, and tumor number were significant prognostic factors for TTP and OS. CONCLUSION: TACE + MWA appears to have more advantages compared to TACE in prolonging OS, with a satisfactory TTP, for inpatients with solitary large or multinodular HCCs. Treatment method, tumor size, and tumor number are significant prognostic factors for TTP and OS. Further randomized, multi-center, prospective trials are required to confirm the findings of this study.

VSITA, an Improved Approach of Target Amplification in the Identification of Viral Pathogens / 生物医学与环境科学（英文）

<p><b>OBJECTIVE</b>Unbiased next generation sequencing (NGS) is susceptible to interference from host or environmental sequences. Consequently, background depletion and virome enrichment techniques are usually needed for clinical samples where viral load is much lower than background sequences.</p><p><b>METHODS</b>A viral Sequence Independent Targeted Amplification (VSITA) approach using a set of non-ribosomal and virus-enriched octamers (V8) was developed and compared with traditionally used random hexamers (N6). Forty-five archived clinical samples of different types were used in parallel to compare the V8 and N6 enrichment performance of viral sequences and removal performance of ribosomal sequences in the step of reverse transcription followed by quantitative PCR (qPCR). Ten sera samples from patients with fever of unknown origin and 10 feces samples from patients with diarrhea of unknown origin were used in comparison of V8 and N6 enrichment performance following NGS analysis.</p><p><b>RESULTS</b>A minimum 30 hexamers matching to viral reference sequences (sense and antisense) were selected from a dataset of random 4,096 (46) hexamers (N6). Two random nucleotides were added to the 5' end of the selected hexamers, and 480 (30 × 42) octamers (V8) were obtained. In general, VSITA approach showed higher enrichment of virus-targeted cDNA and enhanced ability to remove unwanted ribosomal sequences in the majorities of 45 predefined clinical samples. Moreover, VSITA combined with NGS enabled to detect not only more viruses but also achieve more viral reads hit and higher viral genome coverage in 20 clinical samples with diarrhea or fever of unknown origin.</p><p><b>CONCLUSION</b>The VSITA approach designed in this study is demonstrated to possess higher sensitivity and broader genome coverage than traditionally used random hexamers in the NGS-based identification of viral pathogens directly from clinical samples.</p>

Pharmacokinetics of Shengmai Injection and Shenmai Injection in Angina Pectoris Patients / 世界科学技术-中医药现代化

This study was aimed to compare the pharmacokinetics (PK) of Shengmai injection and Shenmai injection with a single injection administration using a constant speed in subjects with stable angina pectoris.A total of 20 subjects with stable angina pectoris were divided into two groups.Each group was administered with Shengmai and Shenmai injection.The liquid chromatography-mass spectrometry (LC/MS) was adopted to determine concentrations of ginsenosides in plasma at different time points.PK parameters were calculated for comparison.The results showed that after a single intravenous infusion of Shengmai and Shenmai injection,the Cm.of ginsenoside Rg1,ginsenoside Re,ginsenoside Rb1 and ginsenoside Rc in Shenmai group were higher than those of the Shengmai group with statistical significance (P ≤0.05).There were differences on the T1/2 of ginsenoside Rg1,AUC0-144h and CL of ginsenoside Rc,as well as Tmax of ginsenoside Rd (P ≤ 0.05).However,there was no significant difference shown on other PK parameters.It was concluded that after a single Shengmai or Shenmai injection,there were PK differences of ginsenoside Rg1,ginsenoside Re,ginsenoside Rb1 and ginsenoside Rc in the human body.The clinical medication selection should be based on syndrome differentiation and treatment of patients.

Effects of Shengmai Injection on Physiological Indices, C-reactive Protein and NO Levels in Experimental Beagle Dogs with Myocardial Ischemia / 世界科学技术-中医药现代化

This study was aimed to explore the effects of Shengmai(SM) injection on blood pressure (BP),heart rate (HR),electrocardiogram (ECG),and serum C-reactive protein (CRP) and NO levelin Beagle dogs with myocardial ischemia (MI).A total of 30 Beagle dogs were divided into 5 groups,which were the blank control group,model control group,SM injection low-dose group (0.80 mL· kg-1),SM injection high-dose group (3.20 mL· kg-1) and isosorbidemononitrate group (0.07 mL· kg-1).The MI model was established by the subcutaneous injection of isoprenaline hydrochloride,and the drug treatments were given at the same time.At 1 h,6 h,12 h,24 h after administration,changes of BP,HR and ECG were recorded;serum CRP and NO content were detected.The results showed that compared with the blank control group,the mean arterial pressure (MBP) was significantly decreased (P＜0.01),HR was significantly increased (P＜0.01,or P＜0.05),the ECG△ST value was significantly increased (P＜0.01) in the model group.SM injection could improve symptoms mentioned above,but the effectswereslow.SM injection had a significant antagonistic effect on the decreasing of CRP content and the increasing of NO content,compared with the model group.The difference was statistically significant (P＜0.01,or P＜0.05).It was concluded that SM injection could improve the physiological indices of Beagle dogs with MI,which might be related to the regulation of CRP and the inhibition of NO secretion.

Study on PK-PD Evaluation of Ginsenoside Rb1 in Subjects with Angina Pectoris Following Intravenous Administration of Shengmai Injection / 世界科学技术-中医药现代化

This study was aimed to establish the pharmacokinetics-pharmacodynamics (PK-PD) model of ginsenoside Rb1 following the intravenous administration of Shengmai injection in subjects with stable angina pectoris.A total of stable angina pectoris were selected and received Shengmai injection for 14 days.Plasma samples were collected at different time points.Plasma concentrations of ginsenoside Rb1 were determined by liquid chromatography-mass spectrometry (LC/MS).The concentration-time curves (AUC) were drawn,and then the PK parameters were calculated.The systolic pressure and diastolic pressure were monitored,and the combined PK-PD model was established based on the theory of effect compartment.The results showed that PK of ginsenoside Rb1 conformed to a mono-compartment model.The effect of Shengmai injection lagged behind the concentrations of ginsenoside Rb1 in plasma.The effect exhibited good correlation with ginsenoside Rb1 in effect compartment.The relationship between effect and plasma concentrations fits the Inhibitory Effect Imax model.It was concluded that the study successfully established the combined PK-PD model of ginsenoside Rb1 in subjects with angina pectoris.The model can efficiently evaluate the effective substance of Shengmai injection.

Effect of Rigorous Staging at the First Diagnosis on Prognosis of Patients with Follicular Lymphoma / 中国实验血液学杂志

<p><b>BACKGROUND</b>A survey of early stage follicular lymphoma(FL) revealed that the rigorously staged FL patients at first diagnosis had a better outcome as compared with non-rigorous staged FL patients, but there were no similar reports in China.</p><p><b>OBJECTIVE</b>To explore the relationship between the rigorous staging at first diagnosis and the prognosis of FL patients at different stages.</p><p><b>METHODS</b>The clinical data of 111 patients with newly diagnosed FL from 2008 to 2014 year were collected and analyzed. The rigorous staging included: (1) bone marrow aspiration and biopsy, (2) imaging examination of whole body including CT and ultrasounic scan, or PET/CT, either or both is defined as rigorous staging, or else as non-rigorous staging.</p><p><b>RESULTS</b>The FL patients at I-II stages by rigorous staging showed a superior progression-free survival(PFS) compared with non-rigorous staging patients(P=0.048). For all the patients, the age, serum LDH, bone marrow lesion and more than 3 foci of diameter larger than 3 cm correlated with prognosis in univariate analysis, and multivariate analysis revealed that the age, serum LDH and bone marrow imolvement were the independent prognostic factors.</p><p><b>CONCLUSION</b>Rigorous staging leads to better outcomes, suggesting that accurate and appropriate testing is important for the patients at the first treatment. The close correlation of bone marrow with prognosis indicates that the evaluation of bone marrow is very important for the daily clinical practice.</p>