排序方式: 共有28条查询结果,搜索用时 15 毫秒
1.
2.
目的 系统评价高体质指数(body mass index,BMI)对胃癌切除术患者预后的影响。方法 计算机检索PubMed、EMBASE、Scopus、Cochrane Library、万方和中国知网等数据库,搜集关于BMI与胃癌切除术患者预后的相关研究,检索期限为建库至2018年12月31日。按照纳入和排除标准筛选文献,提取相关数据并评价纳入文献的质量。采用Review Manager 5.3软件进行Meta分析。结果 共纳入35篇文献,包括32 113例原发性胃癌患者,其中女性11 356例,男性20 757例。Meta分析结果显示,无论是开腹还是腹腔镜手术,高BMI组胃癌患者术后并发症的发生风险均高于低BMI 组患者(RR=1.29,95%CI:1.14~1.46,P<0.001;RR=1.24,95%CI:1.04~1.47,P=0.01)。高BMI组患者的5年总生存率较低BMI组患者差(RR=0.87,95%CI:0.79~0.96,P=0.006),但高BMI对胃癌患者的围手术期死亡率无显著影响(RR=0.79,95%CI:0.51~1.22,P=0.29)。结论 相对低BMI患者,高BMI胃癌患者术后并发症发生率较高,5年生存率较低,但不增加围手术期死亡率。 相似文献
3.
《中山大学学报(医学科学版)》2016,37(5)
【Objective】 To investigate the prognostic values of growth -regulated oncogene -1 (GRO -1) and preliminary mechanism in the hepatocellular carcinoma (HCC). 【Methods】 The serum of 179 consecutive HCC patients, who received radical resection were collected from our prospective established tumor resource bank. According to the sequence, the first 103 cases were divided to the training cohort and the second 76 cases were divided to the validation cohort. GRO -1 was analyzed in the serum samples from 179 HCC patients by using bead -based Luminex technology. Five HCC cell lines (MHCC -97H, QGY -7703, SMMC7721, Hep3B, and CRI2234) were used to detect the secretion of GRO -1. Neutralizing antibody to GRO -1 was administrated to HCC cell lines, the inhibitory effects on cell proliferation, migration and invasion were observed by MTS assay and transwell assay. 【Results】 The secreted level of GRO -1 was 23 to 1 553 pg/mL, and the median was 300 pg/mL. In the training cohort, the value of GRO -1 closet to the point with both maximum sensitivity and specificity was selected as the cutoff score. The univariate analysis showed that GRO -1 was significant risk factors affecting disease free survival (DFS). Using the cutoff score in validation cohort, GRO-1 was still found to be significant risk factors affecting DFS. By multivariate analysis, tumor size, tumor multiplicity, and GRO-1 were identified as the independent predictors of DFS. In HCC cell lines, Hep3B and CRI2234 were detected the secretion of GRO-1. Neutralizing antibody to GRO-1 inhibited the proliferation, migration and invasion of HCC cell lines in a dose-dependent manner. 【Conclusions】 GRO-1 play an important role in the proliferation, migration and invasion in HCC, which was identified as independent predictors of DFS. 相似文献
4.
目的:利用LC-MS分析技术快速鉴定单面针中的生物碱结构。方法:采用XAqua C_8色谱柱(150 mm×2.1 mm,5μm);以乙腈-0.1%甲酸水溶液为流动相梯度洗脱;体积流量:0.3 mL·min~(-1);ESI源正离子模式检测;根据对照品的裂解规律和参考文献推测生物碱的结构。结果:从单面针的甲醇提取物中鉴定了20个化合物结构。结论:LC-MS方法能快速、准确地鉴定单面针中的化学成分,为单面针活性成分的开发利用提供科学依据。 相似文献
5.
《中山大学学报(医学科学版)》2012,33(6)
【Objective】 Mitochondria thioredoxin (thioredoxin 2) and its modulated antioxidant enzymes compose the critical endogenous antioxidant system in human body to scavenge reactive oxygen species (ROS). We aimed to investigate the patterns of alteration to thioredoxin2 expression and antioxidants capacity in liver tissue during 24 h after liver transplantation in rats. 【Methods】 Forty Sprague Dawley (SD) rats were randomly divided into sham group, and 4, 8, 16, and 24 h after autologous orthotopic liver transplantation (AOLT) group. Rats in sham group only suffered from the process of laparotomy and vascular separation, while in other groups all subjected to AOLT. Liver tissues were collected for detection of pathological changes by light microscope, Trx2 expressions by Western blot, and changes of ROS levels and activities of antioxidants. 【Results】 AOLT resulted in severe liver injury in rats during 24 hours after reperfusion manifested as significant elevations in liver pathological scores as early as 4 hours after AOLT. There was also obvious oxidative damage that was evidenced with 1.6 to 2.0 fold increases of O2· or ·OH and MDA levels, accompanied with significant decreases (~30%) in the activity of SOD or catalase and a dramatic (~70%) decrease in level of TOC at 4 h and 8 h (P < 0.01 vs. Sham group). All the parameters restored gradually at 16 and 24 hours after AOLT. The expression of Trx2 in liver increased significantly as early as 4 hours and peaked at 24 hours after AOLT (~2.0 fold)(P < 0.05 vs. Sham group). 【Conclusion】 AOLT could result in severe liver injury, the extent of which coincidence with the oxidant/antioxidant system state manifested as exacerbating first and then alleviating gradually. Up-regulation of Trx2 expression was beneficial to synthesizing antioxidants and further enhancing the antioxidant capacity of liver tissue subjected to ischemia/ reperfusion injury during AOLT. 相似文献
6.
《中山大学学报(医学科学版)》2012,33(6)
【Objective】 Double-stranded RNA-dependent protein kinase (PKR) is a hot pot in cancer research. However, it should be confirmed that whether PKR is an independent prognostic variable in the patients with non-small cell lung cancer (NSCLC). In the present study, we investigated the correlation between PKR and metabolism related biomarkers for NSCLC, identified the markers that could further improve the prognostic significance of PKR. On the other hand, we planned to study the relationship between PKR and some tumor metabolism related products, such as IGF-1R inhibitors and mTOR inhibitors, so as to improve the outcome of individualized target treatment. 【Methods】 Tissue samples obtained from 212 lung cancer patients were stained with an anti-PKR and anti-IGF-1R. Immunohistochemical expression was scored and used for Kaplan-Meier survival analysis. Western blotting was used to analysis PKR and p-PKR expression in 13 lung cancer cell lines, and Sulforhodamine B method (SRB) was used to detect drug inducing Cell inhibitory rate. 【Results】 The 5-year overall survival rate in PKRlow/IGF-1Rhigh patients (21.6%) was significantly lower than that of PKRhigh/IGF-1Rlow patients (74.6%) and others patients (58.2%) (P < 0.0001). Univariate and multivariate Cox analyses revealed that this PKR/IGF-1R combination was an independent predictor of overall survival. SRB suggested that IGF-1R inhibitor PPP can significantly inhibit cell growth in all of the six cell lines in 3 μmol/L dose in d1-3. In 0.3 μmol/L doses, PPP can inhibit the cell growth in H1792 and H292 cells,which weakly expressed PKR and/or p-PKR. There were no significant difference when treated in mTOR inhibitor Rapamyc in 3 dose levels(1,0.1 and 0.01 μmol/L) in 6 cell lines. 【Conclusion】PKR/IGF1-R is a significant predictor of prognosis for NSCLC. PKR/IGF1-R may be a promising approach to improving screening efficiency and predicting prognosis in NSCLC patients. H292, H1792, which are low expression of PKR, are sensitive to IGF-1R inhibitor PPP , but not to mTOR inhibitor Rapamycin. What’s more, it’s valuable to select the NSCLC patients who are sensitive to the IGF-1R inhibitor with the detection of PKR expression. 相似文献
7.
【目的】 探讨肾部分切除术后急性肾损伤指标早期监测效能。【方法】76例肾癌患者在我院接受肾部分切除术,术后根据急性肾损伤诊断标准将患者分为两组:急性肾损伤组和非急性肾损伤组,采用受试者工作特征曲线评价急性肾损伤生化指标判断急性肾损伤的效能。【结果】 24例(31.6%)患者术后发生急性肾损伤,其余52例(68.4%)患者术后未发生肾损伤,肾损伤组患者术中肾血管阻断的时间(min)较非肾损伤组长(30 ± 19 vs 24 ± 9, P = 0.03),肾损伤组有5例(20%)患者术中接受输血而非肾损伤组仅有8例(15%)患者接受输血(P = 0.011),肾损伤组患者住院时间较非肾损伤组患者长(P = 0.017)。术后24 h和48 h血清胱抑素C水平具有良好预测急性肾损伤效能,其AUC分别为0.790 [95%CI 0.688 ~ 0.893, P = 0.000 )和0.754 (95% CI 0.646 ~ 0.863, P = 0.000)。多元回归分析发现术后急性肾损伤危险因素包括输血 (P = 0.028)和术后24 h血清胱抑素C浓度(P = 0.018)。【结论】术后血清胱抑素C可能是肾部分切除术后急性肾损伤早期监测指标,输血和术后血清胱抑素C浓度可能是术后急性肾损伤独立危险因素。 相似文献
8.
评述金粟兰科草珊瑚属药用植物草珊瑚和海南草珊瑚的化学成分和分析方法、生物学活性和药理学作用、安全性、临床应用。尽管已从草珊瑚属药用植物中分离鉴定出三萜、苯丙素、香豆素、木脂素、黄酮、酚、酚酸等类型化合物,但倍半萜类化合物无论是在含量上,还是在化学结构多样性上,占绝对优势地位,它们可能是草珊瑚属药用植物的重要生物活性物质基础之一。 相似文献
9.
《中山大学学报(医学科学版)》2016,37(1)
Abstract: 【Objective】 To investigate the fibroblast growth factor 21 (FGF21) expression in liver tissue and serum from different stage of mice nonalcoholic fatty liver disease (NALFD) and its correlation with SREBP. 【Method】C57BL/6 mice were fed with chow diet and high fat diet (HFD) for 1, 9, and 18 weeks. Expressions of FGF21 and SREBP in liver tissue of mice were detected by western blot and real time RT -PCR. Serum FGF21 was examined using ELISA. The correlation of FGF21 and SREBP was statistically analyzed. 【Result】 The liver of mice exhibited typical appearance of fatty liver after 9 weeks of HFD. A large amount of fat granules accumulation was found in hepatocytes from mice fed with HFD for 18 weeks. Compared with mice fed with chow diet, FGF21 mRNA level in liver tissue from mice fed with HFD began dramatically higher on 9th and 18th week of HFD (both P < 0.05), with positive correlation to the duration of HFD (r = 0.952, P = 0.000) and the SREBP mRNA level (r = 0.725, P = 0.000). On the other hand, FGF21 protein expression in liver tissue from mice fed with HFD statistically decreased on 9th and 18th week of HFD compared with mice of chow diet (both P < 0.05). Opposite changes were found in the expression of SREBP protein. Furthermore, compared with mice of chow diet, serum FGF21 of HFD mice wasobviously higher on 9th and 18th week of HFD (both P < 0.05), with positive correlation to the duration of HFD (r = 0.944,P = 0.000) and the FGF21 mRNA level of liver tissue(r = 0.910, P = 0.000), and negative correlation to the protein expression of FGF21 in liver tissue(r = -0.704,P = 0.000). 【Conclusion】 In the course of mice NAFLD, FGF21 mRNA level of liver tissue increased, protein expression decreased, and serum level became higher, accompanying by the elevation of SREBP in liver. That suggests a high secretion of FGF21 would appear with a high level of transcription and synthesis of FGF21 in liver under HFD, which is closely correlated with hepatic steatosis. 相似文献
10.
《中山大学学报(医学科学版)》2015,36(6)
Abstract: 【Objective】 To identify the receptors involved in PGE2 promoting human CD34+cells proliferation. 【Methods】 18 samples of peripheral blood mobilized by G -CSF from 2013.6~2014.10 was collected. Human CD34+ cells were isolated by magnetic activated cell sorting (MACS) microbeads kits, and the purity of CD34+ cells was identified by flow cytometry. Four PGE2 receptors (EP1 ~ EP4) expressed on human CD34+ cells which were treated with dmPGE2 were detected by qRT -PCR. The human CD34+ cells were divided into 6 groups. Each group cells were treated with control, PGE2, EP2 agonist (EP2A), EP2A+EP2 antagonist (EP2AA), EP4 agonist (EP4A) and EP4A+EP4 antagonist (EP4AA), respectively. Twenty four hours later, burst forming unit -Erythrocyte (BFU -E) number, colony forming unit -Erythrocyte (CFU -E)number, colony forming unit -Granulocyte (CFU -G) number, colony forming unit -Monocyte (CFU -M) number, colony forming unit -Granulocyte monocyte (CFU -GM) number and colony forming unit-Granulocyte, Erythrocyte, Monocyte and Megakaryocyte (CFU -GEMM) were evaluated by colony -forming assay. Furthermore, cell cycle distribution was analyzed by flow cytometry, and the expression of survivin mRNA,β -catenin and survivin protein of human CD34+ cells was detected by qRT -PCR and Western blot,respectively. 【Results】 Human CD34+ cells could express four PGE2 receptors. While the relative expression of EP2 and EP4 mRNA were significantly higher than EP1 and EP3 mRNA. The EP2 and EP4 mRNA relative expression in human CD34+ cells which were treated with dmPGE2 were significantly up -regulated compared with control groups, while the EP1 and EP3 mRNA relative expression had no obviously changed. After exposured to PGE2, EP2A, EP2A+EP2AA,EP4A and EP4A+EP4AA, we observed that EP4A stimulates CFU -E, BFU -E, CFU -GEMM, CFU -G, CFU -M and CFU -GM formation, while EP4AA plays a negative effects on those colony formations. We also found that EP4A induces human CD34+ cells entering into cell cycle (G2/M phase) from rest period (G0/G1 phase). In addition, we found that EP4A elevates survivin mRNA, survivin and β -catenin protein expression by real time -PCR and Western blot analysis. 【Conclusion】 PGE2 enhancing human CD34+ cells proliferation could mainly mediate by EP4 prostanoid receptor. 相似文献