AIM: To investigate the effects of chronic hy poxia and antagonistic effects of aminophylline on airway inflammation and oxida tive lung damage in rats. METHODS: Thirty-four male Wistar rats were randomly divided into three groups: normal control group (n=10); hypoxia group (n=12); aminop hlline-treated group (n=12). The last two groups were both exposed to hypoxi a 7 hours per day for 21 days. The third group was treated with aminophlline (1 00 mg?kg -1?d -1) before exposed to hypoxia. The level of tumor ne c rosis factor (TNF) -?, interleukin (IL)-10, lipid peroxide (LPO) and the activi ty of superoxide dismutase (SOD) were determined in blood and homogenates of lung tissue. RESULTS: Compared to the control group, the levels of TNF-?, IL -10 and LPO were significantly increased (P

Objective To construct eukaryotic expressing vector of mouse soluble CD160 and stably transfect into CHO cells for eukaryotic expression.Methods Recombinant soluble CD160(rsCD160) was constructed by gene recombination.Total RNA was extracted from the spleen of C57BL/6 mice.cDNA was amplified for the soluble form of CD160.Then,the PCR product was cloned tO pcDNA3.1 and pEGFP-N1.The recombinant plasmid was identified by restriction map and sequence analy-sis.The soluble CDl 60 expression in CHO cells transfected with recombinant psCDl 60 was verified by RT-PCR and Westernblot.The binding ability of psCD160 tO its ligand was detected by FACS.Results 520 bp mouse soluble CD160 gene was obtained.Recombinant mouse psCD160 was successfully constructed.After transfection,soluble CD160 expression in the culture supernatant of CHO cells was successfully detected.FACS analysis indicated that soluble CD160 could bind tO its ligand.Conclusion Recombinant mouse psCD160 is successfully constructed,which will benefit our further study on soluble CD160 for immune therapy against tumor in the future experiments.

Objective To prepare the human papillomavirus (HPV) 16 peptide vaccine and explore the effect in vitro and in vivo. Methods (1) Prediction of the major histocompatibility complex (MHC) class I restricted T cell epitopes by bioinformatics target at transporter associated with antigen processing (TAP) and named by E7Pa, E7Pb, E7Pc separately. (2)In vivo, the C57BL/6 mice were divided into five groups with same amounts randomly after loading with TC-1 cells (HPV 16 positive tumor cells from C57BL/6 mouse), named as E7Pa + CpG,E7Pb + CpG,E7Pc + CpG (as experiment groups, and added 50 μg/ml E7Pa, E7Pb, E7Pc, respectively), CpG(as positive control group and added Con A with 12 mg/L final concentration) and blank control group (without any treatment). The T cell proliferation was detected by methyl thiazolyl tetrazolium (MTT) assay at different time points;the lactate dehydrogenase (LDH) delivery method was used to test the cytolytie T lymphocyte (CTL) activity of mouse splenic lymphocyte in different ratio of effector cells and target cells (E:T);the related cytokines in tumor tissue and mouse peripheral blood were evaluated by real-time PCR and enzyme-linked immunosorbent assay (ELISA), respectively. The tumor volumes were measured to contrast the therapeutic effect in different groups. Results (1) Three peptide named E7Pa, E7Pb, E7Pc were successfully preparated which had high affinity and specificity. (2) After vaccination of 24, 48, 72,96 hours, MTT results shown that the proliferation rate in E7Pa + CpG group were(131±32)%, (302±15)%, (552±28)%, (731±24)% individually, which were much higher than those in blank control [(72± 15) %, (120 ± 57) %, (176 ±41)%, (288±29)% ;P<0.01], and the other groups i. e. E7Pb + CpG,E7Pc +CpG and CpG groups all proliferated much higher than those in blank control group with statistic signification (P<0. 05), but there was no significant difference between groups(P>0.05);the LDH delivery assay showed that when the ratio of E:T was 100:1, the activity of CTL in the E7Pa + CpG group was most powerful than the other groups with statistic signification (P<0. 01). Meanwhile, the ratio of E:T was concentration-dependent. Compared E7Pb + CpG, E7Pc + CpG or CpG groups with blank control group, there were significantly difference(P<0. 05) ,while there was no significant difference between groups(P >0. 05). The mRNA levels of interferon γ (IFN-γ), interleukin-2 (IL-2) in tumor tissue and peripheral blood in E7Pa + CpG group were significantly higher than those in blank control group (P<0. 01), which was the similar results when compared E7Pb + CpG, E7Pc + CpG or CpG groups with control group (P < 0. 05), and without significant difference between groups(P > 0. 05). The tumor volumes were suppressed obviously in all the experiment groups, especially at the 60th days, the volumes in ETPa + CpG group were much smaller than that in blank control group with statistic signification (P < 0. 01),which was the similar results that E7Pb + CpG, E7Pc + CpG or CpG groups had difference than blank control group with statistic signification (P < 0. 05), and without significant difference between groups(P >0. 05). Conclusion The HPV16 E7 peptide target at TAP combination with CpG as a vaccine could treat effectively the HPV16 E7 positive tumor in experiment.

Objective: To evaluate the clinical value of 16-slice spiral CT low dose chest scanning in the diagnosis of pulmonary tuberculosis. Methods: From June 13, 2014 to June 20, 2017, 80 patients with pulmonary tuberculosis in Yuyao People's Hospital were selected in the study.The conventional chest dose(control group) and low dose(observation group) of 16-slice spiral CT were used.The diagnostic accuracy, radiation dose of the two methods, lymph node or vascular space display and image features were observed. Results: The diagnostic accuracy of the two methods had no statistically significant difference (P>0.05). The dose product length, the CT dose index in the observation group were (32.98±2.57) mGycm, (44.29±3.47), respectively, which were significantly lower than those in the control group[(127.66±5.03)mGycm, (44.29±3.47)](t=106.01, 21.05, all P<0.05). The display clarity of lymph nodes or vascular space of the observation group was 90.00%, which of the control group was 92.50%, there was no statistically significant difference between the two groups (P>0.05). The rates of ground glass shadow, burr of the observation group were 29.32%, 31.58%, respectively, which were significantly lower than those of the control group(41.35%, 47.37%), the differences were statistically significant (χ²=4.21, 6.94, all P<0.05). Other signs detection probability are similar between the two groups and had no statistically significant differences (all P>0.05). Conclusion The low dose chest CT scan with 16 rows spiral CT has high clinical value, low radiation dose and high diagnostic accuracy in the diagnosis of pulmonary tuberculosis.

The purpose of this study was to pool information in epithelial ovarian cancer by combining studies using Affymetrix expression microarray datasets made at different laboratories to identify novel biomarkers. Epithelial microarray expression information across laboratories was screened and combined after preprocessing raw microarray data, then ANOVA and unpaired T test statistical analysis was performed for identifying differentially expressed genes (DEGs), followed by clustering and pathway analysis for these DEGs. In this work, we performed a combination analysis on microarrays from three different laboratories using gene expression data on ovarian cancer and obtained a list of differential expression profiles identified as potential candidate in aggressiveness of ovarian cancer. The clustering and pathway analysis explored the different molecular basis of different ovarian cancer stages and potential important regulatory pathways in ovarian cancer development. Our results showed that combination of microarray data from different laboratories in the same platforms may overcome biases derived from probe design and technical features, thereby accelerating the identification of trustworthy DEGs, and demonstrating the advantage of integrative analysis in gene expression studies on epithelial ovarian cancer research.

AIM: To reproduce hypercapnic models and approach some pathophysiological changes in rats. METHODS: The mixed gases of high concentrated carbon dioxide (8% CO 2, 21% O 2, 71% N 2) were given to wistar rats 7 hours a day for 28 days. The various indexes were compared between control group (group A) and hypercapnic group (group B). RESULTS: The PaCO 2 [(55.90?4.34) mmHg] and the lipid peroxides (LPO) contents in plasma, lung tissue and right ventricle were significantly higher in group B than those in group A ( P

BACKGROUND:Exercise has a regulatory effect on intestinal flora dysbiosis,which can effectively protect the beneficial flora and improve the intestinal environment.However,the effect of treadmill exercise on the structure and diversity of intestinal microbial community in Parkinson's disease and the specific mechanism are not clear. OBJECTIVE:Using 16S rDNA technique to analyze the effect of treadmill exercise on the structure and diversity of the intestinal flora of rats with Parkinson's disease,and to investigate the mechanism of non-pharmacological treadmill exercise to improve Parkinson's disease. METHODS:Twelve of the 18 Sprague-Dawley rats were randomly selected to make animal models of Parkinson's disease using unilateral 2-point nigrostriatal injection of 6-hydroxydopamine.The remaining six rats were used as sham-operation group,which were injected with the same dose of saline containing 0.2%ascorbic acid using the same positioning and injection method.After successful modeling,12 rats with Parkinson's disease were randomly divided into model group and treadmill exercise group(n=6 per group).The treadmill exercise group was subjected to a middle and low intensity tread mill exercise,10 m/min,30 minutes per day,5 days per week for 4 weeks.Fresh feces were collected and stored in liquid nitrogen 24 hour after the last exercise session,and the changes in fecal flora were analyzed by 16S rDNA sequencing technique. RESULTS AND CONCLUSION:Treadmill exercise significantly improved behavior and nigrostriatal tyrosine hydroxylase-positive cell expression in rats with Parkinson's disease model and alleviated changes in the structure and diversity of the gut microbial community caused by Parkinson's disease,increased the number of operational taxonomic units and modulated Alpha and Beta diversity in rats.At the phylum and genus levels,the abundance ratio of Firmicutes/Bacteroidetes in the model group decreased compared with the sham-operated group,while beneficial bacteria such as Prevotella,Bacteroides,and Clostridium_XlV increased significantly after treadmill exercise.To conclude,treadmill exercise has a significant modulating effect on behavioral abnormalities,toxic damage to dopaminergic neurons and gut microbial imbalance caused by Parkinson's disease,alleviates the symptoms of flora-related diseases,and has a positive effect on the improvement of Parkinson's disease.

Objective: To observe the safety and efficiency of face-lift combined with fat grafting in facial rejuvenation. Methods: We performed a retrospective study, which included 23 patients. SMAS suspension and multi-site suspension were combined to correct the nasolabial fold, mid-cheek aging and malar mounds. Structural fat grafting was performed to treat the volume loss in mid-face. Results: All patients demonstrated a significant improvement in midfacial appearance. No infection or nerve injury were found in this study. Only three patients did not get primary healing in temple region, which led to temporal hair loss from secondary healing. Conclusions This study demonstrates that fat grafting and multiple layers face-lift are efficient method for facial rejuvenation. These approaches appear to be very promising for facial anti-aging techniques.

The purpose of this study was to pool information in epithelial ovarian cancer by combining studies using Affymetrix expression microarray datasets made at different laboratories to identify novel biomarkers.Epithelial microarray expression information across laboratories was screened and combinedafter preprocessing raw microarray data,then ANOVA and unpaired T test statistical analysis was performed for identifying differentially expressed genes(DEGs),followed by clustering and pathway analysis for these DEGs.In this work,we performed a combination analysis on microarrays from three different laboratories using gene expression data on ovarian cancer and obtained a list of differential expression profiles identified as potential candidate in aggressiveness of ovarian cancer.The clustering and pathway analysis explored the different molecular basis of different ovarian cancer stages and potential important regulatory pathways in ovarian cancer development.Our results showed that combination of microarray data from different laboratories in the same platforms may overcome biases derived from probe design and technical features,thereby accelerating the identification of trustworthy DEGs,and demonstrating the advantage of integrative analysis in gene expression studies on epithelial ovarian cancer research.

Objective:To analyze the efficacy of second-line regimens and prognostic factors in patients with first-relapsed multiple myeloma (MM) treated with bortezomib, cyclophosphamide, and dexamethasone (BCD).Methods:A retrospective cohort study. Clinical data were collected in first-relapsed MM patients after BCD treatment from three tertiary hospitals in north China from July 2009 to October 2022. Patients were classified according to the second-line regimen into the immunotherapy group, single novel agent group [either proteasome inhibitor (PI) or immunomodulatory drug (IMiD)], combination treatment group (both PI+IMiD), and traditional treatment group. Responses to second-line regimens and survival data were analyzed. The Kaplan-Meier method was used for survival analysis and the Cox proportional risk model was used for univariate and multivariate analyses.Results:A total of 217 patients were enrolled including 8.8% (19/217) in the immunotherapy group, 48.4% (105/217) in the PI/IMiD group, 29.9% (65/217) in the PI+IMiD group, and 12.9% (28/217) in the traditional treatment group. The median age was 62 years (range 31-83 years) and 56.2% (122/217) were males. The overall response rates (ORRs) in the four groups were 94.7% (18/19) vs. 56.2% (59/105) vs. 73.8% (48/65) vs. 32.1% (9/28) ( χ2=24.55; P<0.001), respectively. The progression-free survival (PFS) of the second-line regimens (2ndPFS) was 17.7 vs. 9.0 vs. 9.2 vs. 4.6 months ( χ2=22.74; P<0.001), respectively, among which patients in the PI/IMiD and PI+IMiD groups had comparable 2ndPFS ( χ2=1.76; P=0.923). Patients with high-risk cytogenetic abnormalities (HRCAs) achieved the longest 2ndPFS of 22.0 months in the immunotherapy group ( χ2=15.03; P=0.002). Multivariate analysis suggested that immunotherapy ( HR=0.11, 95% CI 0.05-0.27), achievement of efficacy of partial response or better ( HR=0.47, 95% CI 0.34-0.66), and non-aggressive relapse ( HR=0.25, 95% CI 0.17-0.37) were independent prognostic factors of 2ndPFS. Conclusion:In this real-world study, immunotherapy was associated with a more favorable efficacy and PFS for first-relapsed MM patients after BCD treatment, with similar outcomes in patients with HRCAs.