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国家自然科学基金(81270583)

作品数:7 被引量:55H指数:3
相关作者:王小钦丁倩倩陈勤奋马燕林果为更多>>
相关机构:复旦大学更多>>
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Oleanolic acid attenuates liver ischemia reper-fusion injury by HO-1/Sesn2 signaling pathway被引量:16
2016年
BACKGROUND: Ischemia reperfusion injury (IRI) is unavoid-able in liver transplantation and hepatectomy. The present study aimed to explore the possible mechanism and the effect of oleanolic acid (OA) in hepatic IRI. METHODS: Mice were randomly divided into 6 groups based on different treatment. IRI model: The hepatic artery, portal vein, and bile duct to the left and median liver lobes (70% of the liver) were occluded with an atraumatic bulldog clamp for 90 minutes and then the clamp was removed for reperfusion. The mice were sacriifced 6 hours after reperfusion, and blood and liver tissues were collected. Liver injury was evaluated by biochemical and histopathologic examinations. The expressions of Sesn2, PI3K, Akt and heme oxygenase-1 (HO-1) were mea-sured with quantitative real-time RT-PCR and Western blotting. RESULTS: The serum aminotransferases level and scores of he-patic histology were increased after reperfusion. The increase was attenuated by pretreatment with OA (P<0.01). Compared with the IR group, OA pretreatment signiifcantly up-regulated the expression of Sesn2, PI3K, Akt and HO-1 in IR livers (P<0.05). Administration of zinc protoporphyrin (ZnPP), an inhibitor of HO-1, diminished the OA effect on HO-1 and Sesn2 expressions (P<0.05) and the protective effect of OA on IRI. CONCLUSIONS: Our results demonstrate that OA can attenu-ate hepatic IRI. The protective mechanism may be related to the OA-induced HO-1/Sesn2 signaling pathway.
Bao-Bin HaoXiong-Xiong PanYe FanLing LuXiao-Feng QianXue-Hao WangFeng ZhangJian-Hua Rao
关键词:HO-1
Effects of multimodal fast-track surgery on liver transplantation outcomes被引量:25
2017年
BACKGROUND: Fast-track surgery and enhanced recovery after surgery have been applied to many surgical procedures; however, data on fast-track surgery and enhanced recovery after surgery following liver transplantation is limited. This study aimed to conduct a prospective study to determine the effects of fast-track surgery on prognosis after liver transplantation. METHODS: This was a prospective, single-blinded, randomized study. One hundred twenty-eight patients undergoing liver transplantation were selected for the fast-track (FT group, n=54) or conventional process (NFT group, n=74). The primary endpoints were intensive care unit (ICU) stay and hospital stay. The secondary endpoints were as follows: operative time, anhepatic phase time, intraoperative blood loss, intraoperative blood transfusion volume, postoperative complications, readmission rate, and postoperative mortality. RESULTS: There was no significant difference in preoperative demographics between the two groups. The median ICU stay was 2 days (range 1-7 days) in the FT group and 5 days (range 3-12 days) in the NFT group (P<0.01). Furthermore, the hospital stay was also significantly reduced in the FT group (P<0.01). The operative time, anhepatic phase time, intraoperative blood loss, and intraoperative blood transfusion volume were decreased in the FT group compared with the NFT group (P<0.05). Based on Spearman correlation analysis, the ICU stay and hospital stay may be positively correlated with operative time, anhepatic phase time and intraoperative blood loss. There were no differences in the incidence of postoperative complications, readmissions, and postoperative mortality between the two groups. CONCLUSION: Fast-track procedures effectively reduce the ICU stay and hospital stay without adversely affecting prognosis. This study demonstrated that fast-track protocols are safe and feasible in liver transplantation.
Jian-Hua RaoFeng ZhangHao LuXin-Zheng DaiChuan-Yong ZhangXiao-Feng QianXue-Hao WangLing Lu
DNA甲基转移酶抑制剂地西他滨对SKM-1细胞P15^(INK4B)基因甲基化状态的影响被引量:2
2015年
目的探讨DNA甲基转移酶抑制剂地西他滨(DAC)对骨髓增生异常综合征(MDS)转白血病细胞株SKM-1 P15INK4B基因甲基化状态的影响。方法对数生长期的SKM-1细胞设4组,每组1×106个细胞,其中3组为DAC处理组,分别以1.5、3.0和6.0μmol/L DAC处理SKM-1细胞48 h,另1组未加DAC的SKM-1细胞培养48 h作为对照组。甲基化特异性PCR(MSP)检测各组细胞P15INK4B基因甲基化情况,实时荧光RT-PCR相对定量法检测P15INK4B基因mRNA表达情况,羟基荧光素二醋酸盐琥珀酰亚胺脂(CFSE)法检测细胞增殖抑制情况,碘化丙啶(PI)单染法检测细胞周期,Annexin V-FITC/PI双染法检测细胞早期凋亡情况。结果 1)对照组SKM-1细胞的P15INK4B基因完全甲基化,3个DAC处理组的甲基化条带逐渐变浅,非甲基化条带出现并逐步加深;2)P15INK4B基因mRNA表达水平:对照组与DAC为1.5、3.0、6.0μmol/L的3个处理组分别为1.00±0.12与0.91±0.13、0.51±0.06、0.43±0.04(P<0.05),3个DAC处理组之间差异甚微(P>0.05);3)CFSE平均荧光强度(MFI):对照组与DAC为1.5、3.0、6.0μmol/L的3个处理组分别为51.67±1.61与55.33±2.28、56.33±2.50、55.71±2.87,仅3.0μmol/L组较对照组变化较明显(P<0.05),而各DAC处理组之间变化差异很小(P>0.05);4)G1期细胞比例(%):对照组与DAC为1.5、3.0、6.0μmol/L的3个处理组分别为55.78±3.61与48.12±2.93、51.69±1.60、46.71±1.54,S期细胞比例(%):4个组分别为44.22±3.61与51.88±2.93、48.31±1.60、53.29±1.54,其中1.5、6.0μmol/L组较对照组变化较明显(P<0.05),而DAC各处理组中,6.0与3.0μmol/L组之间具明显差异(P<0.05);5)早期凋亡率(%):对照组与DAC为1.5、3.0、6.0μmol/L的3个处理组分别为2.91±0.26与7.77±0.22、12.45±0.28、13.86±0.27(P<0.05),DAC各处理组没有明显变化(P<0.05)。结论 DAC能逆转SKM-1细胞的P15INK4B基因完全甲基化状态,在一定程度上抑制SKM-1细胞的增殖,使细胞分化阻滞在S期,同时促进细胞凋亡,并随DAC浓度的增加而�
丁倩倩陈勤奋王小钦
关键词:骨髓增生异常综合征DNA异常甲基化地西他滨
Hepatic perivascular epithelioid cell tumor in three patients被引量:4
2016年
Perivascular epithelioid cell tumor (PEComa) is a rare, soft tissue tumor that can occur in various locations. The present report included three patients (one male and two females; age range, 25-51 years) with hepatic PEComas. The collected data included the clinical manifestations, diagnosis, management, treatment, and prognosis. Since it is difficult to diagnose hepatic PEComas by imaging, the patients were diagnosed by tumor tissue examination such as immunohistochemistry, which was positive for HMB-45, Melan-A, and SMA on all slides. The tumor was composed of diverse tissues including smooth muscle, adipose tissue, and thick-walled blood vessels. During the follow-up period, one of the tumors was malignant (double-positive for CD34 and Ki-67) and recurred 3 months after surgery. In addition, malignant hepatic PECo- mas were reviewed in the literature, indicating that the majority of hepatic PEComas are benign, but few hepatic PEComas exhibit malignant behaviors in older female patients (〉50 years of age) with abdominal discomfort and pain, larger tumor size (〉10 cm), or positive staining for CD34 and Ki-67. In conclusion, there is no effective method to diagnose PEComas. Currently, the diagnosis of PEComas depends on immunohistochemical staining. Tumor resection and close follow-up are the principal methods for the management of PEComas.
Bao-Bin HaoJian-Hua RaoYe FanChuang-Yong ZhangXin-Zheng DaiXiao LiYan LengFeng Zhang
关键词:DIAGNOSISHEPATECTOMYRECURRENCE
去铁胺(DFO)诱导骨髓增生异常综合征(MDS)细胞株SKM-1的P15^(INK4B)基因去甲基化被引量:3
2014年
目的探讨铁螯合剂去铁胺(deferoxamine,DFO)诱导骨髓增生异常综合征(myelodysplastic syndrome,MDS)细胞株SKM-1的P15INK4B基因去甲基化作用。方法以枸橼酸铁铵(ferric ammonium citrate,FAC)和DFO处理SKM-1细胞,按不同铁负荷分成3组:对照组、FAC组和FAC+DFO组,分别检测不同铁负荷组细胞内可变铁池(labile ironpool,LIP)、细胞内活性氧类(reactive oxygen species,ROS)、P15INK4B基因甲基化状态、P15INK4B基因mRNA表达情况、细胞增殖(CFSE的平均荧光强度MFI)、细胞早期凋亡率以及细胞周期。结果与对照组相比,FAC组的LIP(64.04%±2.12%vs.1.45%±0.65%)、ROS(45.57%±1.18%vs.33.38%±12.96%)、细胞增殖MFI(23.01%±5.20%vs.51.67%±1.61%)明显升高,P15INK4B基因mRNA表达水平(0.72±0.08 vs.1)和细胞早期凋亡率(13.97%±2.25%vs.22.53%±1.76%)明显减少,差异均有统计学意义(P<0.05);与FAC组相比,FAC+DFO组的LIP(8.34%±4.21%vs.64.04%±2.12%)、ROS(34.39%±2.12%vs.45.57%±1.18%)、细胞增殖MFI(37.34%±6.61%vs.23.01%±5.20%)明显减少,P15INK4B基因mRNA表达水平(1.50±0.15 vs.0.72±0.08)和细胞早期凋亡率(55.07%±1.30%vs.13.97%±2.25%)明显升高,差异均有统计学意义(P<0.05);3组细胞周期的差异无统计学意义。结论 DFO可使LIP和ROS降低,诱导铁过载的SKM-1细胞P15INK4B基因去甲基化,使其mRNA重新表达,并可抑制铁过载的SKM-1细胞增殖,促进其凋亡。
丁倩倩陈勤奋王小钦
骨髓增生异常综合征CpG岛甲基化模式的建立及其诊断价值研究被引量:3
2014年
目的 建立骨髓增生异常综合征(MDS)的CpG岛甲基化模式,为MDS的早期诊断和鉴别诊断提供新的生物学标志.方法 采用Illumina450k甲基化芯片和Agilent全基因组表达谱基因芯片进行差异基因筛选,筛选出高甲基化低表达基因,初步建立MDS的CpG岛甲基化模式.通过甲基化特异性PCR、重硫酸盐测序和实时荧光定量PCR进一步在MDS患者组及对照组(非恶性血液病患者)中进行验证,最终建立CpG岛甲基化模式.最后采用诊断试验评价的方法评价CpG岛甲基化模式诊断MDS的效能.结果 通过甲基化芯片和表达谱基因芯片的关联分析,以及在211例MDS患者组和60例对照组中进行验证,建立的MDS CpG岛甲基化模式为高甲基化低表达的6个基因.6个基因在MDS组发生甲基化的比例分别为ABAT (97%)、DAPP1 (98%)、FADD(89%)、LRRFIP1 (96%)、PLBD1 (89%)和SMPD3 (85%).5个或5个以上基因同时发生甲基化时诊断MDS的特异度和灵敏度为95.0%和91.4%,准确度为92.3%.结论 由ABAT、DAPP1、FADD、LRRFIP1、PLBD1、SMPD3这6个基因建立的MDS的CpG岛甲基化模式可以提高MDS诊断的准确性及鉴别诊断效能.
赵晓丽王小钦李爽李念夷马燕林果为
关键词:骨髓增生异常综合征CPG岛甲基化
ABAT基因在人类疾病中的研究进展被引量:2
2016年
ABAT基因是γ-氨基丁酸(γ-amino butyric acid,GABA)分解过程中关键酶γ-氨基丁酸转氨酶(γ-amino butyric acid transaminase,GABAT)的编码基因,不仅参与神经递质的代谢,而且对其他组织中的物质合成、细胞功能的发挥也起着不可或缺的作用。ABAT基因还参与许多疾病的发生和发展,包括精神系统、消化系统以及肿瘤性疾病。本文主要对ABAT基因在人类疾病中的研究进展作一综述。
赵光杰王小钦
关键词:Γ-氨基丁酸
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