白癜风患者外周血CD4+CD25+调节性T细胞的检测

Objective To determine the level of peripheral CD4+CD25+ regulatory T lymphocytes in patients with vitiligo at different stages and to study its relationship with the development of vitiligo. Methods Blood samples were collected from 34 outpatients with vitiligo, including 19 cases of progressive vitiligo and 15 cases of stable vitiligo, as well as from 20 normal human controls. Flow cytometry was used to detect the levels of peripheral CD4+ and CD4+CD25+ T lymphocytes in these samples. Results Compared with the controls, the percentage of CD4+CD25+ regulatory T lymphoeytes in peripheral lymphocytes was significantly lower in patients with progressive vitiligo than those in patients with stable vitiligo and normal human con-trois [(2.43±0.30)% vs (3.49±0.39)% and (3.34±0.24)%, both P <0.05], but no significant difference was found between patients with stable vitiligo and normal human controls (P＞0.05). A significantly nega-tive correlation was observed between the percentage of CD4+CD25+ regulatory T lymphocytes and lesion area in patients with progressive vitiligo (r = -0.48, P <0.05), but not in patients with stable vitiligo (P ＞0.05). There was no significant correlation between the course of disease and the percentage of peripheral CD4+CD25+ regulatory T lymphocytes in patients with progressive vitiligo or stable vitiligo (both P ＞ 0.05). Conclusion There is an abnormal proportion of peripheral CD4+CD25+ regulatory T lymphocytes in patients with vitiligo, which may be related to the development of vitiligo.     

三叶青黄酮对荷Lewis肺癌小鼠髓源性抑制细胞的作用

目的研究三叶青黄酮对荷Lewis肺癌小鼠髓源性抑制细胞(MDSCs)的作用,探讨三叶青黄酮抗肿瘤机制。方法 40只C57BL/6雌性小鼠随机分为5组,三叶青黄酮高(100 mg/m L)、中(50 mg/m L)、低剂量组(25 mg/m L)、造模组及正常组,每组8只。除正常组外各组小鼠建立肺癌模型,24 h后各组灌胃给药。14天后处死小鼠,剥取瘤组织,计算抑瘤率;流式细胞仪检测小鼠脾脏中MDSCs(GR-1~+CD11b~+)、CD4~+T和CD8~+T细胞的表达;酶联免疫吸附法测定小鼠外周血中一氧化氮合成酶(i NOS)和精氨酸酶1(Arg-1)表达。结果三叶青黄酮高、中、低剂量组抑瘤率分别为:44. 3%、29. 2%、15. 4%。与正常组比较,造模组MDSCs(GR-1~+CD11b~+)及Arg-1、i NOS含量及CD8~+T比例增高(P 0. 01)、CD4~+T比例、CD4~+T/CD8~+T比值降低(P 0. 01)。与造模组比较,三叶青黄酮各组MDSCs(GR-1~+CD11b~+)含量、CD8~+T细胞比例、Arg-1、i NOS含量降低,CD4~+T细胞比例、CD4~+T/CD8~+T比值升高(P 0. 01)。与三叶青黄酮高剂量组比较,三叶青黄酮中剂量及低剂量组MDSCs(GR-1~+CD11b~+)含量、CD8~+T细胞比例、Arg-1含量升高,CD4~+T细胞比例、CD4~+T/CD8~+T比值降低(P 0. 05,P 0. 01),同时三叶青黄酮低剂量组i NOS含量增高(P 0. 01)。结论三叶青黄酮可通过改善荷瘤小鼠肿瘤免疫抑制状态发挥抗肿瘤作用,其机制可能与三叶青黄酮可下调MDSCs及其相关炎症因子的表达有关。     

三叶青黄酮抗肺癌作用研究

目的研究三叶青黄酮对肺癌A549细胞增殖抑制和侵袭转移作用及其机制。方法采用MTT法检测三叶青黄酮对A549细胞增殖的抑制作用;集落形成试验检测三叶青黄酮对A549细胞抗癌活性的影响;划痕试验检测三叶青黄酮对细胞迁移力的影响;Transwell实验检测三叶青黄酮对A549细胞侵袭力变化;Western blot法检测MMP-2、MMP-9、TIMP-2等侵袭转移相关蛋白表达水平。结果三叶青黄酮抑制A549细胞增殖程度与用药浓度、时间呈正相关;随着药物浓度的增高,细胞集落形成的数量明显减少,细胞向划痕区的迁移速度不断减慢;穿过Transwell小室的侵袭细胞亦明显减少;MMP-2、MMP-9蛋白表达逐渐降低,TIMP-2蛋白表达升高,呈浓度依赖性。结论三叶青黄酮能够抑制肺癌A549细胞的侵袭转移,可能与降低MMP-2、MMP-9蛋白表达有关。     

白癜风患者外周血CD4+CD25+调节性T细胞的检测

Objective To determine the level of peripheral CD4+CD25+ regulatory T lymphocytes in patients with vitiligo at different stages and to study its relationship with the development of vitiligo. Methods Blood samples were collected from 34 outpatients with vitiligo, including 19 cases of progressive vitiligo and 15 cases of stable vitiligo, as well as from 20 normal human controls. Flow cytometry was used to detect the levels of peripheral CD4+ and CD4+CD25+ T lymphocytes in these samples. Results Compared with the controls, the percentage of CD4+CD25+ regulatory T lymphoeytes in peripheral lymphocytes was significantly lower in patients with progressive vitiligo than those in patients with stable vitiligo and normal human con-trois [(2.43±0.30)% vs (3.49±0.39)% and (3.34±0.24)%, both P <0.05], but no significant difference was found between patients with stable vitiligo and normal human controls (P＞0.05). A significantly nega-tive correlation was observed between the percentage of CD4+CD25+ regulatory T lymphocytes and lesion area in patients with progressive vitiligo (r = -0.48, P <0.05), but not in patients with stable vitiligo (P ＞0.05). There was no significant correlation between the course of disease and the percentage of peripheral CD4+CD25+ regulatory T lymphocytes in patients with progressive vitiligo or stable vitiligo (both P ＞ 0.05). Conclusion There is an abnormal proportion of peripheral CD4+CD25+ regulatory T lymphocytes in patients with vitiligo, which may be related to the development of vitiligo.     

白癜风患者外周血CD4+CD25+调节性T细胞的检测

Objective To determine the level of peripheral CD4+CD25+ regulatory T lymphocytes in patients with vitiligo at different stages and to study its relationship with the development of vitiligo. Methods Blood samples were collected from 34 outpatients with vitiligo, including 19 cases of progressive vitiligo and 15 cases of stable vitiligo, as well as from 20 normal human controls. Flow cytometry was used to detect the levels of peripheral CD4+ and CD4+CD25+ T lymphocytes in these samples. Results Compared with the controls, the percentage of CD4+CD25+ regulatory T lymphoeytes in peripheral lymphocytes was significantly lower in patients with progressive vitiligo than those in patients with stable vitiligo and normal human con-trois [(2.43±0.30)% vs (3.49±0.39)% and (3.34±0.24)%, both P <0.05], but no significant difference was found between patients with stable vitiligo and normal human controls (P＞0.05). A significantly nega-tive correlation was observed between the percentage of CD4+CD25+ regulatory T lymphocytes and lesion area in patients with progressive vitiligo (r = -0.48, P <0.05), but not in patients with stable vitiligo (P ＞0.05). There was no significant correlation between the course of disease and the percentage of peripheral CD4+CD25+ regulatory T lymphocytes in patients with progressive vitiligo or stable vitiligo (both P ＞ 0.05). Conclusion There is an abnormal proportion of peripheral CD4+CD25+ regulatory T lymphocytes in patients with vitiligo, which may be related to the development of vitiligo.     

白癜风患者外周血CD4+CD25+调节性T细胞的检测

Objective To determine the level of peripheral CD4+CD25+ regulatory T lymphocytes in patients with vitiligo at different stages and to study its relationship with the development of vitiligo. Methods Blood samples were collected from 34 outpatients with vitiligo, including 19 cases of progressive vitiligo and 15 cases of stable vitiligo, as well as from 20 normal human controls. Flow cytometry was used to detect the levels of peripheral CD4+ and CD4+CD25+ T lymphocytes in these samples. Results Compared with the controls, the percentage of CD4+CD25+ regulatory T lymphoeytes in peripheral lymphocytes was significantly lower in patients with progressive vitiligo than those in patients with stable vitiligo and normal human con-trois [(2.43±0.30)% vs (3.49±0.39)% and (3.34±0.24)%, both P <0.05], but no significant difference was found between patients with stable vitiligo and normal human controls (P＞0.05). A significantly nega-tive correlation was observed between the percentage of CD4+CD25+ regulatory T lymphocytes and lesion area in patients with progressive vitiligo (r = -0.48, P <0.05), but not in patients with stable vitiligo (P ＞0.05). There was no significant correlation between the course of disease and the percentage of peripheral CD4+CD25+ regulatory T lymphocytes in patients with progressive vitiligo or stable vitiligo (both P ＞ 0.05). Conclusion There is an abnormal proportion of peripheral CD4+CD25+ regulatory T lymphocytes in patients with vitiligo, which may be related to the development of vitiligo.     

白癜风患者外周血CD4+CD25+调节性T细胞的检测

Objective To determine the level of peripheral CD4+CD25+ regulatory T lymphocytes in patients with vitiligo at different stages and to study its relationship with the development of vitiligo. Methods Blood samples were collected from 34 outpatients with vitiligo, including 19 cases of progressive vitiligo and 15 cases of stable vitiligo, as well as from 20 normal human controls. Flow cytometry was used to detect the levels of peripheral CD4+ and CD4+CD25+ T lymphocytes in these samples. Results Compared with the controls, the percentage of CD4+CD25+ regulatory T lymphoeytes in peripheral lymphocytes was significantly lower in patients with progressive vitiligo than those in patients with stable vitiligo and normal human con-trois [(2.43±0.30)% vs (3.49±0.39)% and (3.34±0.24)%, both P <0.05], but no significant difference was found between patients with stable vitiligo and normal human controls (P＞0.05). A significantly nega-tive correlation was observed between the percentage of CD4+CD25+ regulatory T lymphocytes and lesion area in patients with progressive vitiligo (r = -0.48, P <0.05), but not in patients with stable vitiligo (P ＞0.05). There was no significant correlation between the course of disease and the percentage of peripheral CD4+CD25+ regulatory T lymphocytes in patients with progressive vitiligo or stable vitiligo (both P ＞ 0.05). Conclusion There is an abnormal proportion of peripheral CD4+CD25+ regulatory T lymphocytes in patients with vitiligo, which may be related to the development of vitiligo.     

三叶青提取物对人肺癌H1299细胞凋亡的影响及机制研究

目的探讨三叶青提取物对人肺癌H1299细胞增殖抑制、凋亡作用及其机制。方法采用Cell Counting Kit-8（CCK-8）检测三叶青提取物对H1299细胞增殖的抑制作用;采用倒置显微镜观察三叶青提取物对H1299细胞形态的影响;荧光显微镜观察三叶青提取物作用细胞后经Hoechst 33258染色的凋亡形态变化;流式细胞仪检测细胞凋亡率;蛋白印迹法（Western blot）检测pro-caspase-3、9,cle-caspase-3、9,poly-ADP-ribose polymerase（PARP）蛋白表达变化。结果与对照组比较,浓度为0.5、1、5、10 mg/m L三叶青提取物作用H1299细胞后抑制率升高（P〈0.05,P〈0.01）;同时作用时间越长,抑制率越高（P〈0.01）。倒置显微镜下观察给药后细胞形态明显改变,细胞减少;荧光显微镜下观察荧光染色后细胞核浓染和凋亡小体形成。流式细胞仪检测结果显示细胞凋亡率呈明显的量-效关系。Western blot结果表明：与对照组比较,浓度为5、10 mg/m L三叶青提取物明显抑制H1299细胞中pro-caspase-3、9和PARP蛋白表达,增加cle-caspase-3、9,cle-PARP蛋白的表达,差异有统计学意义（P〈0.05）。结论三叶青提取物对人肺癌H1299细胞具有明显抑制其增殖,促进细胞凋亡作用,且其机制可能与激活caspase蛋白表达有关。     

精准癌医学——中医肿瘤学的机遇与挑战

精准癌医学的"精准预防""精准治疗"目标与中医学的"未病先防""整体观念""辨证论治"等这些"以人为本"理念与相一致,是当代医学发展的一个热点方向。但中医肿瘤学在人才、理论体系、疗效评价等方面的短板存在巨大挑战。利用现代科技的发展,以证候、中药复方为突破点,打通中西医关节点,有可能实现弯道超车的机会,进而推动中医药事业走向新成就。     

白癜风患者外周血CD4+CD25+调节性T细胞的检测

Objective To determine the level of peripheral CD4+CD25+ regulatory T lymphocytes in patients with vitiligo at different stages and to study its relationship with the development of vitiligo. Methods Blood samples were collected from 34 outpatients with vitiligo, including 19 cases of progressive vitiligo and 15 cases of stable vitiligo, as well as from 20 normal human controls. Flow cytometry was used to detect the levels of peripheral CD4+ and CD4+CD25+ T lymphocytes in these samples. Results Compared with the controls, the percentage of CD4+CD25+ regulatory T lymphoeytes in peripheral lymphocytes was significantly lower in patients with progressive vitiligo than those in patients with stable vitiligo and normal human con-trois [(2.43±0.30)% vs (3.49±0.39)% and (3.34±0.24)%, both P <0.05], but no significant difference was found between patients with stable vitiligo and normal human controls (P＞0.05). A significantly nega-tive correlation was observed between the percentage of CD4+CD25+ regulatory T lymphocytes and lesion area in patients with progressive vitiligo (r = -0.48, P <0.05), but not in patients with stable vitiligo (P ＞0.05). There was no significant correlation between the course of disease and the percentage of peripheral CD4+CD25+ regulatory T lymphocytes in patients with progressive vitiligo or stable vitiligo (both P ＞ 0.05). Conclusion There is an abnormal proportion of peripheral CD4+CD25+ regulatory T lymphocytes in patients with vitiligo, which may be related to the development of vitiligo.