穴位埋线对实验性结肠炎大鼠的脾淋巴细胞核因子-κB p65及相关信号分子β2AR的影响

目的:探讨穴位埋线治疗溃疡性结肠炎的作用机制.方法:将18只SD大鼠随机分为3组:正常对照组、模型组、穴位埋线组,每组6只.除正常对照组未行造模外,其余2组大鼠均采用三硝基苯磺酸(TNBS)造摸.模型组不予干预,正常饮食,穴位埋线组于"上巨虚""天枢""大肠俞"处进行穴位埋线治疗.治疗15 d后观察大鼠的腹泻、便血症状和结肠病理组织学改变,用western blot法检测大鼠脾淋巴细胞核因子-κB p65(NF-κB p65)及相关信号分子β2肾上腺素受体(β2AR)蛋白的表达.结果:穴位埋线组的大鼠腹泻、黏液脓血便症状得到较快控制,大鼠黏膜组织损伤明显改善;与正常对照组相比,模型组大鼠脾淋巴细胞NF-κB p65增多(P<0.01),β2AR的表达减少(P<0.01),两组差异有统计学意义;与模型组比较,穴位埋线组大鼠脾淋巴细胞NF-κB p65减少(P<0.01),而β2AR的表达增多(P<0.01),两组脾淋巴细胞NF-κB p65和β2AR的表达存在明显差异.结论:穴位埋线治疗实验性结肠炎有明显效果,其作用机制可能是通过调节NF-κB p65及相关信号分子β2AR,从而发挥治疗作用.

Abstract：

T Objective To investigate the mechanisms of catgut implantation at acupoints onulcerative colitis. Methods Eighteen SD rats were randomly divided into a normal control group (NC),a model group (MO) and a catgut implantation group (CI) with 6 rats in each group. Animals in groupMO and group CI were treated by trinitro-benzene-sulfonic acid (TNBS) to establish model with colitis.symptoms of diarrhea and bloody stool, and changes in histopathology were detected 15 days afterthe treatment. Expressions of splenic lymphocyte nuclear factor κB p65 (NF-κB p65) and correlatedsignaling molecules (β2AR) were detected by the western blot method. Results Diarrhea and mucusbloody purulent stool were soon controlled, and mucous injures were obviously improved in group CI.The NF-κB p65 value of splenic lymphocytes was significantly increased (P<0.01) and expression ofβ2AR remarkably reduced in group MO (P<0.01), compared with group NC. But, the NF-κB p65 valuewas significantly decreased (P<0.01) and expression of β2AR remarkably increased in group CI (P<0.01), compared with group MO. Conclusion Catgut implantation at acupoints is obviously effectivein treating experimental colitis. Modulation of NF-κB p65 and the correlated signaling molecules β2ARmay be involved in the mechanisms.     

针刺治疗胃病腧穴配伍的研究近况

千百年的医疗实践，已充分证明了针刺防治胃病疗效可靠。而针灸处方在针刺防治胃病疗效的诸因素中起着重要作用，所以历代医家对针灸临床选穴都非常重视，并积累了丰富的经验。笔者整理近10年来针灸治疗胃病的文献，从针灸治疗胃病的临床选穴角度，尤其是现代配伍研究方面进行分析探讨，以期为进一步的临床和实验研究提供参考。     

针刺治疗胃病腧穴配伍的研究近况

千百年的医疗实践,已充分证明了针刺防治胃病疗效可靠.而针灸处方在针刺防治胃病疗效的诸因素中起着重要作用,所以历代医家对针灸临床选穴都非常重视,并积累了丰富的经验.笔者整理近10年来针灸治疗胃病的文献,从针灸治疗胃病的临床选穴角度,尤其是现代配伍研究方面进行分析探讨,以期为进一步的临床和实验研究提供参考.     

针刺治疗脑卒中后认知障碍研究进展

脑卒中后认知功能障碍的主要干预方法有药物治疗、认知功能训练及针刺治疗等,其中认知功能训练最为常用。临床实践与机理研究均证实,针刺对认知功能障碍具有治疗作用。在3种常用的针刺治疗方法中,醒脑开窍针刺法临床报道例数最多,机理研究也更为全面、详细。但针刺治疗的效果与认知功能训练缺乏对比,针刺结合认知功能训练对认知障碍是否具有更好的效果,需要进一步研究验证。     

TNBS诱导大鼠实验性结肠炎的致病机制

目的 探讨三硝基苯磺酸(TNBS)诱导大鼠实验性结肠炎的致病机制.方法 18只雄性SD大鼠随机分为3组,每组6只:正常组、模型组、美沙拉嗪组.除正常对照组未行造模外,其余两组大鼠均采用TNBS造模.模型组不设干预,正常饮食;美沙拉嗪组给予美沙拉嗪混悬液0.42 g/(kg·d)灌胃;治疗15 d后观察大鼠的结肠病理组织学改变,用免疫组化染色法观察大鼠结肠组织IL-17、β2AR、β-arrestin2、NF-κBp65的表达;用Western blot法检测大鼠脾淋巴细胞β2AR,β-arrestin2和NF-κBp65蛋白的表达;用RT-PCR法检测大鼠结肠组织STAT6 mRNA的表达.结果 美沙拉嗪组大鼠的腹泻、黏液脓血便症状得到较快改善,大鼠黏膜组织损伤也明显改善.与正常组相比,模型组大鼠NF-κBp65和STAT6 mRNA表达增多(P＜0.01),β2AR和β-arrestin2的表达减少(P＜0.01);与模型组比较,美沙拉嗪组大鼠脾淋巴细胞NF-κBp65和STAT6 mRNA表达减少(P＜0.01),而β2AR和β-arrestin2的表达增多(P＜0.01).IL-17在正常组和美沙拉嗪组呈低表达,而在模型组呈高表达.结论 IL-17、β2AR、β-arrestin2、NF-κBp65、STAT6在TNBS诱导大鼠实验性结肠炎的致病过程中发挥重要调节作用.     

Differentiation character of adult mesenchymal stem cells and transfection of MSCs with lentiviral vectors

This study examined the differentiation character and pluripotency of mesenchymal stem cells (MSCs) under different conditions. Adult MSCs were initially isolated from the bone marrow of rats, cultured in vitro and identified by flow cytometry. After MSCs were transferred to osteogenic and adipogenic medium respectively, the morphological characterization of induced cells was observed. The expression of marker genes was detected by RT-PCR analysis. Then MSCs were transfected with lenti- viral vectors pGC-FU-Sox9-EGFP. Enhanced green fluorescence protein (EGFP) expression and trans- fection efficiency were determined by fluorescence microscopy. The results demonstrated that EGFP caused no effect on the multilineage potential of adult MSCs. Sox9 gene expression of high level was maintained stable in the transfected MSCs and induced MSCs to differentiate into chondrocytes. Ag- gracan was positive in chondrogenic lineages and the expression of aggracan and type Ⅱ collagenwas significantly increased during MSCs chondrogenic differentiation. It was concluded that Sox9 gene-modified adult MSCs may be promising candidate cells for further studies on tissue engineering. EGFP facilitates the research on MSCs physiological behavior and application in tissue engineering during differentiation both in vitro and in vivo.     

电针腧穴“胃病方”对急性胃黏膜损伤模型大鼠延髓和下丘脑c-fos表达的影响

目的:观察腧穴"胃病方"的针刺信号在急性胃黏膜损伤模型大鼠延髓和下丘脑中的传导途径。方法:将40只清洁级Wistar大鼠随机分为空白组、假模型组、模型组、胃病方组4组,每组10只。造模采用无水乙醇灌胃法。胃病方组取内关、中脘和足三里,针刺入穴位后施以疏密波,频率10 Hz～30 Hz,电流强度以大鼠肢体微颤为宜。电针20 min,电针治疗结束1 h后,以免疫组织化学检测延髓和下丘脑的c-fos表达。结果:与模型组比较,经电针胃病方治疗后,延髓和下丘脑中c-fos阳性细胞个数明显增多。结论:腧穴"胃病方"在针灸刺激后,c-fos阳性细胞在延髓的孤束核、三叉神经背核及背侧网状亚核等核团和下丘脑背外侧区表达较多。     

STAT6 mRNA与NF-kB在实验性结肠炎大鼠中的表达

目的 研究信号转导和转录激活因子6 (STAT6 )与核因子(NF)-κB在实验性结肠炎大鼠中的表达.方法 18只SD雄性大鼠随机分为3组:正常对照组、模型组、美沙拉嗪组.每组6只.模型组和美沙拉嗪组大鼠均采用三稍基苯磺酸(TNBS)造模.模型组不设干预.正常饮食;美沙拉嗪组给予美沙拉嗪混悬液灌胃;治疗15d后观察大鼠的结肠病理组织学改变,用RT-PCR法检测大鼠结肠组织STAT6 rnRNA的表达,并用Western Blot法检测大鼠脾淋巴细胞NF-κB p65的表达.结果 STAT6 mRNA在溃疡性结肠炎组织中的表达明显高于正常结肠组织(P<0.01);大鼠脾淋巴细胞NF-κB p65蛋白在模型组的表达也明显高于正常组(P<0.01);与模型组相比.美沙拉嗪组STAT6 mRNA和NF-κB p65的表达明显下降(P<0.01).结论 STAT6 rnRNA和NF-κB p65在实验性结肠炎大鼠中呈现高表达.美沙拉嗪可能是通过STAT6和NF-κB双信号途径下调炎症,从而发挥治疗作用.     

电针保护大鼠急性胃黏膜损伤基本腧穴配伍“胃病方”的筛选

目的:通过对临床治疗胃病最常用的3个腧穴不同组合配伍的效应比较,选出最优的穴位组合。方法:将48只清洁级Wistar大鼠按析因设计随机分为8组,即模型组、足三里组、中脘组、内关组、足三里+中脘组、足三里+内关组、中脘+内关组、足三里+中脘+内关组。采用无水乙醇灌胃法制作急性胃黏膜损伤模型。除模型组外,其它组大鼠在相应穴位施以电针。电针治疗结束1 h后,取大鼠的胃黏膜组织,分别进行胃溃疡指数的计算、组织学观察,并运用透射电镜进行超微结构观察。结果:7个电针组与模型组相比,胃黏膜损伤指数和病理损伤积分显著降低(P<0.05)。足三里+中脘+内关组与其它6个电针组相比,两项指标降低更显著(P<0.05)。超微结构观察见模型组胃黏膜壁细胞、主细胞内线粒体肿胀,嵴排列紊乱、断裂,甚至溶解;各电针组胃黏膜细胞损伤程度减轻,足三里+中脘+内关组更为明显。结论:同时电针"足三里"内关"和"中脘"减轻胃黏膜损伤的作用优于其单穴或双穴使用,因而可作为治疗胃病的基本处方。     

随全国名老中医朱进忠临床学习心得-中西互补,辨证为要

朱进忠是全国第二批名老中医经验继承导师 ,享受国务院特殊津贴,同时也是山西省的著名中医专家,硕士研究生导师.朱老数十载的从医生涯,无论是理论还是实践都具有深厚的功底,尤其对疑难疾病的辨证治疗见长,对疑难疾病的治疗有自己的独特见解,曾提出从肝论治、杂病辨证脉为首的观点等.笔者有幸跟从朱老坐堂看病,感触颇深,现把心得与大家分享.