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Objective:To explore the value of biphasic quantitative CT on small airway disease and emphysema injury in patients with smoking combined with chronic obstructive pulmonary disease (COPD).Methods:A total of 186 male physical examination subjects who underwent biphasic CT and pulmonary function (PFT) examinations in the Affiliated Hospital of Yan′an University from July 2018 to September 2020 were enrolled in this retrospective study. These subjects were divided into 121 smokers with COPD (COPD group), aged 34 to 84 (64±8) years old and 65 smokers without COPD (non-COPD group) aged 34 to 72 (61±5) years old. According to the guidelines of the COPD global initiative, patients in COPD group were divided into Global Initiative for Chronic Obstructive Pulmonary Disease (GOLD) Ⅰ-Ⅳ grades. The original DICOM data of CT were imported into the "Digital Lung" test and analysis platform. Quantitative parameters of functional small airway disease percentage (fSAD%) and emphysema area percentage (Emph%) of each lobe were calculated. The differences of CT quantitative parameters among non-COPD group and each grade in COPD group were analyzed by One-Way ANOVA or Kruskal-Wallis H test. The correlation between the smoking index and CT quantitative parameters was analyzed by Spearman correlation analysis. Results:There were significant differences in fSAD% and Emph% of each lobe among non-COPD group and COPD group GOLD Ⅰ-Ⅳ ( P<0.001). Except that the Emph% in right middle lobe of GOLD grade Ⅰ was higher than that of GOLD grade Ⅱ in COPD group, the fSAD% and Emph% in other lobes increased gradually with the increase of GOLD grade in COPD group. The fSAD% and Emph% were larger in the right middle lobe and both upper lobes of COPD group GOLD Ⅰ-Ⅳ. The comparison among each lobe showed that the differences were statistically significant ( P<0.01), except for the fSAD% and Emph% of GOLD Ⅳ ( P=0.395, 0.840). The smoking index was positively correlated with fSAD% and Emph% in each lung lobe. Among them, smoking index was highly correlated with fSAD% in the lower right lobe and Emph% in the lower left lobe ( r=0.474, 0.619, P<0.001). Conclusion:The biphasic quantitative CT can early and sensitively reflect the degree of small airway disease and emphysema injury in smoking combined with COPD, which is of great significance for the early diagnosis and evolution of COPD.
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Objective: To investigate the expression of IL-38 and MIP-2 in lung tissue of rats with pulmonary fibrosis induced by bleomycin, and to explore the significance of IL-38 and MIP-2 in pulmonary fibrosis in rats. Methods: 45 Wistar rats were randomly divided into saline control group ( group N), bleomycin group ( group B) and dexamethasone group ( group D) according to the random and control principle. On the 7 th, 14 th, and 28 th day, 5 rats were killed in each group. The pathological changes of lung tissue were observed by hematoxylin-eosin ( HE) staining in lung tissue. The expression of IL-38 and HYP in lung tissue of rats was measured by enzyme linked immunoassay ( ELISA) and the expression of MIP-2 in lung tissue of rats was measured by RT-PCR method. Results: (1) HE staining showed that the lung tissue from group B and group D developed from normal to inflammatory changes to pulmonary fibrosis. (2) The expression of IL-38 in group B and D decreased gradually, and the decrease was most obvious at 28 th day, which was lower than that in group N ( P＜0. 05), and the expression of IL-38 in group B was lower than that in D group, and the difference was statistically significant ( P＜0. 05). (3) The expression of MIP-2 and HYP increased gradually in group B and D, which were higher than those in group N, and the difference was statistically significant ( P＜0. 05). The MIP-2 and HYP expressions in group B were higher than those of group D in the same period, and the difference was statistically significant ( P＜0. 05). Conclusion: IL-38 and MIP-2 play an important role in the occurrence and development of bleomycin induced pulmonary fibrosis in rats. The application of dexamethasone can improve the degree of pulmonary fibrosis in rats. The effect may be related to the up-regulation of IL-38 and the downregulation of MIP-2.
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Objective To preliminarily optimize the acupuncture protocol in treating migraine in acute stage. Method Ninety patients with migraine in acute stage were observed, with Visual Analogue Scale (VAS) as the evaluation index and an orthogonal design. Acupoints groups [Taiyang (EX-HN5), Fengchi (GB20), Taiyang (EX-HN5) and Fengchi (GB20)], insertion directions (perpendicular, downward penetration, and backward penetration), stimulation dosage (1 needle, 3 needles, and 5 needles) and acupuncture duration (30 min, 1 h, and 2 h), altogether 4 factors and 3 levels, formed up different acupuncture protocols to observe the analgesic efficacy in treating migraine in acute stage, so as to determine the role of the four factors (Chi-square test), advantage of the 3 levels (multiple comparisons) and the optimal grouping of the 4 factors and 3 levels. Result Acupoints group, insertion direction and stimulation dosage were the major factors in acupuncture analgesia, and the acupuncture duration was the secondary factor (P<0.05). The analgesic effect of Taiyang (EX-HN5) and Fengchi (GB20) was more significant than either Taiyang (EX-HN5) or Fengchi (GB20) (P<0.05). Penetration puncture from Naokong (GB19) towards Fengchi (GB20) (downward penetration) produced a more significant analgesic effect than from Fengchi (GB20) towards Wangu (GB12) and from Tianyou (TE16) towards Fengchi (GB20) (both backward penetration) (P<0.05). Acupuncture with Five needles and 3 needles (parallel horizontal insertion) were superior to that with 1 needle (P<0.05); acupuncture with 5 needles was better than that with 3 needles but without a statistical significance (P>0.05). Needle retaining for 2 h produced a better analgesic effect than retaining for 30 min and 1 h, but without statistical significances (P>0.05). Conclusion Taiyang (EX-HN5) plus Fengchi (GB20), downward penetration acupuncture, 5-needle parallel horizontal acupuncture, and 2-h needle retaining combine an optimal acupuncture protocol in treating migraine in acute stage. Nevertheless, 3-needle parallel acupuncture with 30-60-min needle retaining can also be chosen according to the condition of the patients.
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The chemical consituents from the stems and leaves of Psychotria serpens were separated and purified by column chromatographies with silica gel, ODS, Sephadex LH-20 and PR-HPLC. The structures of the isolated compounds were identified on the basis of physicochemical properties and spectroscopic analyses, as well as comparisons with the data reported in literature. 18 compounds were isolated from the 90% ethanol extract of the stems and leaves of P. serpens, which were identified as chrysin(1), acacetin(2), genkwanin(3), chrysoeriol(4), rhamnocitrin(5), isorhamnetin(6), tricin(7), jaceosidin(8), dillenetin(9), kumatakenin(10), ayanin(11), isosakuranetin(12), eriodictyol(13), homoeriodictyol(14), taxifolin(15), pomonic acid(16), fupenzic acid(17) and euscaphic acid(18). All compounds were isolated from the genus Psychotria for the first time.
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Drugs, Chinese Herbal , Plant Leaves , Plant Stems , PsychotriaABSTRACT
Objective To investigate the expressions of miR-20a-5p/miR-20b-5p in gastric cancer cells and gastric carcinoma tissues,analyze their target genes and enriching signal pathways using bioinformatics methods,and explore their biological behavior and function.Methods The expression levels of miR-20a-5p/miR-20b-5p in gastric cancer cells with different differentiation such as high,middle or low differentiation,normal gastric mucosa cells,gastric cancer tissues and adjacent tissues were detected by real-time fluorescent quantitative PCR,and their clinical significance was analyzed.The target genes of miR-20a-5p/miR-20b-5p were predicted using 10 softwares affiliated to mirWALK web database,and the genes supported by more than three softwares were selected as target genes.The signal pathways of target genes were enriched by online DAVID 6.7 software.Results The expression levels of miR-20a-5p/miR-20b-5p in gastric cancer cells with different differentiation were significantly higher than that in normal gastric mucosa cells (all P ＜0.05),and that in gastric cancer tissues higher than adjacent tissues (P ＜ 0.05).The up-regulated expression of miR-20b-5p was closely related to lymph node metastasis and invasion depth (all P ＜ 0.05).Bioinformatics analysis showed that the enriched target genes of miR-20a-5p/miR-20b-5p existed in multiple signaling pathways associated with cancer.Conclusion MiR-20a-5p/miR-20b-5p may be a promising biomarker of gastric cancer,which is highly expressed in gastric cancer and is related to lymph node metastasis and invasion depth.
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Sox5 gene is located on 12p12.1 containing 29 exons.The gene can transcript 5 variants, thus produce 5 isoforms.L-SOX5A is an isoform with multiple functions , include regulate embryonic development , and determine cell differentiation .Sox5 also plays a role in pathogenesis of prostate cancer , breast cancer and lymphoma .
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<p><b>OBJECTIVE</b>To develop a method for evaluating the feasibility of prenatal screening using local median value and determining the cut-off value.</p><p><b>METHODS</b>With receiver operating characteristic curve (ROC) analysis, results of second trimester prenatal screening calculated by a local median value in a new model and the built-in median value in 2T software were compared. The cut-off value was set by serial analysis of true and false positive rates and other relevant data.</p><p><b>RESULTS</b>The ROC curve has accurately estimated the difference in the screening efficacy between a local median value and that embedded in the 2T model, and established a reasonable cut-off value for the laboratory based on false positive rate and detection rate.</p><p><b>CONCLUSION</b>The method of ROC curve can be used to evaluate the performance of local median value in prenatal screening and to test the rationality of cut-off value established in the laboratory. As the result, a better cut-off value may be derived.</p>
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Female , Humans , Male , Pregnancy , China , Epidemiology , Down Syndrome , Diagnosis , Epidemiology , Genetics , Pregnancy Trimester, Second , Genetics , Prenatal Diagnosis , Methods , Reference Standards , ROC Curve , SoftwareABSTRACT
<p><b>OBJECTIVE</b>Using two antithrombotic treatment (clopidogrel vs. clopidogrel combined warfarin) strategies after femoral-popliteal artery angioplasty prospectively, to evaluate which strategy is more effective for the restenosis prevention.</p><p><b>METHODS</b>Totally 50 patients referred for endovascular treatment (including the percutaneous transluminal angioplasty (PTA) and stent implantation) of the superficial femoral artery and popliteal artery from January 2008 to May 2009 were randomly divided into clopidogrel group (group A, 25 cases, 30 limbs) and clopidogrel plus warfarin group (group B, 25 cases, 33 limbs) before operation. Clinical outcomes and restenosis rate of the target lesions were evaluated at 3, 6 and 12 months after operation.</p><p><b>RESULTS</b>Totally 88 patients were screened for participation in the study, 56 patients were included after the follow-up of 12 months. At 3 months, the rates of restenosis were 16.7% in group A and 18.2% in group B (χ² = 0.025, P = 0.874). At 6 months, the accumulated restenosis rates were 36.7% in group A and 36.4% in group B (χ² = 0.001, P = 0.98). At 12 months, the accumulated restenosis rates were 53.3% in group A and 42.4% in group B (χ² = 0.75, P = 0.387). Analysis for the critical limb ischemia sub-group showed that follow-up of 12 months, the accumulated restenosis rate was 8/10 in group A and 6/12 in group B (χ² = 1.023, P = 0.312).</p><p><b>CONCLUSION</b>The clopidogrel alone treatment for PTA or PTA plus stent implantation of femoral popliteal artery has no statistically significant difference in comparison with the clopidogrel combined warfarin treatment in terms of the cumulative vascular restenosis rate at 3, 6, 12 months postoperatively.</p>
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Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Angioplasty, Balloon , Arterial Occlusive Diseases , Femoral Artery , General Surgery , Popliteal Artery , General Surgery , Postoperative Complications , Prospective Studies , Ticlopidine , Therapeutic Uses , Warfarin , Therapeutic UsesABSTRACT
OBJECTIVE@#To explore the easily applicable indicators of practical value to evaluate the prognosis of acute respiratory distress syndrome (ARDS).@*METHODS@#Blood and biochemical tests and blood-gas analyses were performed upon entry into the ICUs, 12 h, 24 h, 48 h and 72 h after that in 72 ARDS patients (who were admitted to the ICUs of our hospital from January 2000 to December 2009). Then APACHE II scores were achieved by combining relevant physiological parameters and laboratory results.@*RESULTS@#There was a statistical difference between the death group and survival group at different time points upon entering the ICUs in terms of APACHE II score, alveolar-arterial oxygen difference and arterial blood lactate clearance rate. PaO(2)/FiO(2) values were recorded to be statistically different between the death group and survival group 24 h, 48 h and 72 h, respectively after entry into the ICUs. In addition, registered linear regression existed between APACHE II score, alveolar-arterial oxygen difference or PaO(2)/FiO(2) value and time. APACHE II score 24 h and 72 h after entering ICUs predicted mortality with an area under the ROC curve (AUC) standing respectively at 0.919 and 0.955. Arterial blood lactate clearance rate 12 h, 24 h, 48 h and 72 h after entering ICUs predicted mortality with an area under the ROC curve (AUC) at 0.918, 0.918, 0.909 and 0.991, respectively.@*CONCLUSIONS@#APACHE II score applied in combination with arterial blood lactate clearance rate is of clinical significance in assessing the prognosis of ARDS patients.