埃他卡林对ＥＴ-１诱导的人肺动脉平滑肌细胞ＫＡＴＰ通道蛋白表达的影响

目的:研究新型ATP敏感性钾通道(KATP)开放剂埃他卡林对内皮素-1(ET-1)诱导的人肺动脉平滑肌细胞(HPASMCs)上KATP蛋白表达的影响.方法:原代培养人肺动脉平滑肌细胞,随机分成对照组,ET-1组,ET-1 埃他卡林组,ET-1 吡那地尔组,ET-1 埃他卡林 格列本脲组,ET-1 吡那地尔 格列本脲组,用Western-blot方法分析各组KATP蛋白磺酰脲受体亚单位(SUR2B)和内向整流性孔区亚单位(Kir6.1)表达变化情况.结果:与ET-1的作用相反,埃他卡林能使ET-1诱导下的SUR2B亚基表达升高,特异性KATP阻断剂格列本脲可逆转埃他卡林引起的SUR2B亚基表达升高;但各组对Kir6.1亚基表达无明显影响.结论:埃他卡林通过上调KATP的SUR2B亚基表达而发挥其在治疗低氧性肺动脉高压(HPH)中的作用,可望成为治疗低氧性肺动脉高压的新药.     

吡那地尔对人肺动脉平滑肌细胞KATP通道mRNA表达的影响

目的:研究经典KATP开放剂吡那地尔对原代培养人肺动脉平滑肌细胞 KATP 通道mRNA表达的影响,以探讨KATP通道在肺动脉高压发生发展中的分子生物学机制.方法:分离人3～4级肺小动脉,原代培养人肺动脉平滑肌细胞.分成ET-1组、ET-1 吡那地尔组及ET-1 吡那地尔 格列本脲组.以Trizol法抽提总RNA,逆转录为cDNA,采用Real-time PCR方法检测各组细胞KATP通道SUR2B和Kir亚单位mRNA表达量.结果:ET-1 组 KATP通道SUR2B mRNA表达量较对照组明显减少,为对照组的0.09±0.01倍(P<0.05,n=3).加用吡那地尔可拮抗ET-1作用,提高SUR2B mRNA表达量,为ET-1组的10.94±1.13倍,为对照组的0.97±0.03倍(P>0.05,n=3).格列本脲可拈抗吡那地尔作用,减少SUR2B mRNA表达量,为ET-1 吡那地尔组的0.10±0.01倍,为对照组的0.07±0.02倍(P<0.05,n=3).各组细胞KATP通道 Kir6.1 mRNA 表达量无统计学差异.结论:KATP 开放剂吡那地尔可增加原代培养人肺动脉平滑肌细胞KATP通道SUR2B mRNA表达量,这可能是其调节肺动脉平滑肌细胞KATP通道表达和功能的机制.     

PPARα和IL-1βmRNA在妊娠期子宫肌层的表达及相关性

目的 探讨人类妊娠的不同阶段过氧化物酶体增殖物激活受体α(PPARα)和白细胞介素-1β( IL-1β)mRNA在子宫肌层的表达,以及在维持妊娠、发动分娩中的作用.方法 收集10例未孕(NP组)、10例未足月未临产(PL组)、20例足月未临产(TNL组)及20例足月临产(TL组)育龄期妇女的子宫平滑肌组织,采用荧光定量(real time) PCR技术检测PPARα及IL-1βmRNA的表达.以NP组作为对照,采用2△△CT法分析目的基因组间差异性表达.结果 PPARα在PL组的表达较其他各组均明显升高(P＜0.05),在TL组的表达降低(P＜0.05).IL-1β.在PL组的表达明显降低(P＜0.05),在TL组的表达与其他各组比较则明显升高(P＜0.05).TNL组PPARα及IL-1β的表达与NP组比较差异均无统计学意义(P＞0.05).PPARα与IL-1β呈负相关(r=-0.767,P＜0.05).结论 PPARα及IL-1β在妊娠的不同时期均有明显变化.抗炎因子PPARα可能在维持妊娠中起重要作用,促炎因子IL-1ββ可能参与分娩发动.     

分娩相关基因在早产和足月产子宫肌层的差异表达及其意义

目的研究分娩相关基因白介素-8(IL-8)、缩宫素受体(oxytocin receptor,OTR)和前列腺素H合成酶-2(prostaglandin H synthase type-2,PGHS-2)在早产和足月产子宫肌层的差异表达。方法选取17例早产临产(preterm labour,PTL)和31例早产未临产(preterm no labour,PTNL)孕妇作为研究组,6例足月临产(term labour,TL)和6例足月未临产(termno labour,TNL)孕妇作为对照组,活检取子宫(下段)肌层组织,采用实时荧光定量PCR(qRT-PCR)及Westernblot法检测各组子宫肌层中IL-8、OTR和PGHS-2mRNA及蛋白的表达水平,结合临床资料对检测结果进行统计学分析。结果子宫下段肌层中,IL-8mRNA的表达在PTL组显著低于TL组(P0.01),但均显著高于对应的未临产组(PTNL,P0.05;TNL,P0.01);PGHS-2mRNA表达水平在PTL组显著低于TL组(P0.05),而后者又显著高于TNL组(P0.01);OTR mRNA和蛋白表达水平在各组中均未见显著差异(P0.05);PGHS-2蛋白表达在TL组要显著高于TNL组(P0.05)而在PTL与PTNL组间则未见明显区别(P0.05)。Spearman非参数相关性分析显示在PTNL组中IL-8基因表达与孕周显著相关(r=0.294,P=0.042)。多元线性回归显示,早产组IL-8、OTR及PGHS-2基因表达均存在一定程度的相互影响,但在足月产组中则不明显。结论早产与足月产子宫肌层分娩相关基因表达存在显著的差异,可能与早产进程相关。     

过氧化物酶体增殖物激活受体对人绒毛膜前列腺素代谢酶的调节

目的 探索不同妊娠状态人绒毛膜上过氧化物酶体增殖物激活受体(PPARs)各亚型的基因和蛋白表达差异及其与前列腺素代谢酶15-羟基前列腺素脱氢酶(PGDH)蛋白表达的相关性,进一步浅探PPARs对PGDH可能的调节机制和在分娩启动中可能发挥的作用。方法 收集2019年1月至12月正常足月妊娠未临产择期剖宫产分娩(TNL)、足月妊娠自然临产分娩(TL)的绒毛膜组织各40份,早产临产组(PL)22份,免疫组织化学实现PPARs和PGDH在绒毛膜滋养细胞内的定位,用RT-PCR和Western blot方法检测PPARs的mRNA及蛋白表达,检测同一份样本上PGDH的mRNA和蛋白表达,并统计PPAR各亚型蛋白表达与PGDH蛋白表达的相关性;收集足月妊娠顺产的绒毛膜组织,行绒毛膜滋养细胞培养,给予不同浓度PPARγ的特异性激动剂罗格列酮和拮抗剂GW9662处理细胞,检测PGDH的mRNA和蛋白表达。结果 PPARs和PGDH均在人绒毛膜组织上滋养细胞核表达。TL组PPARγmRNA和蛋白表达均低于TNL组(P<0.05),而两组PPARα、PPARβ的mRNA和蛋白表达差异无统计学意义(...     

NF-κB对Aβ1-42诱导神经元KATP亚基Kir6.2/SUR1表达的影响

目的 研究神经细胞核转录因子-κB(NF-κB)对β-淀粉样蛋白(Aβ1-42)诱导原代培养皮层及海马胆碱神经元ATP敏感性钾通道(KATP)亚基Kir6.2/SUR1蛋白表达的影响,探讨NF-κB的可能作用。方法 实验分为空白对照组、Aβ1-42组、Aβ1-42+SN50组和SN50组。运用细胞原代培养的方法培养大鼠皮层及海马胆碱神经元并进行鉴定,用Western blotting法检测药物干预后的Kir6.2/SUR1蛋白及NF-κB亚基p65蛋白表达的变化。结果 加入药物处理神经细胞72h后,与空白对照组相比,Aβ1-42组的p65蛋白和Kir6.2/SUR1蛋白表达均显著升高(P均<0.05);与Aβ1-42组相比,Aβ1-42+SN50组的Kir6.2/SUR1蛋白表达显著降低(P<0.05)。结论 NF-κB信号通路在Aβ1-42诱导神经元Kir6.2/SUR1蛋白的表达中起保护作用。     

Aβ1-42对大鼠基底前脑神经元KATP通道各亚基蛋白表达的影响

目的研究β淀粉样蛋白（Aβ_1-42）对原代培养基底前脑胆碱能神经元ATP敏感性钾通道（KATP）各亚基蛋白表达的影响,探讨阿尔茨海默病发病的细胞毒性分子机制。方法 运用细胞原代培养的方法培养大鼠基底前脑胆碱能神经元并进行鉴定, 用2μmmol/L的Aβ_1-42对原代培养细胞进行干预, 免疫荧光双染及免疫印记观察干预后不同时间(分别为0, 24, 72h)细胞KATP通道各亚基Kir6.1、Kir6.2和SUR1、SUR2蛋白表达水平的变化。结果与正常对照组比较,Aβ_1-42作用胆碱能神经元24h后, KATP通道亚基Kir6.1及SUR2蛋白表达显著增多(P<0.05),而亚基Kir6.2及SUR1蛋白表达无明显变化。但Aβ_1-42作用时间达72h后, KATP通道各个亚基蛋白表达均显著升高(P<0.05)。 结论 Aβ_1-422作用胆碱能神经元不同的时间段（24h和72h）,细胞KATP通道各亚基蛋白表达有不同程度的增加,且增加速度不一致。可能由此改变KATP通道的结构和功能,从而影响Aβ_1-42的神经细胞毒性作用。     

格列美脲对2型糖尿病GK大鼠KATP通道表达的影响

目的观察磺脲类药物格列美脲对2型糖尿病GK大鼠心肌组织ATP敏感性钾通道（KATP）表达的影响。方法自发性糖尿病GK大鼠48只随机分入糖尿病对照组、糖尿病胰岛素治疗组、糖尿病格列本脲组、糖尿病格列美脲组，另设正常对照组（n=12）。放射配体结合法检测SUR2蛋白含量，半定量RT-PCR法检测KATP通道亚单位SUR2和Kir6.2 mRNA表达。结果干预12周后糖尿病组、糖尿病胰岛素治疗组和正常对照组SUR2受体密度、SUR2 mRNA及Kir6.2 mRNA表达水平无显著差异；格列美脲治疗组SUR2受体密度较正常对照组和糖尿病组无明显改变；SUR2 mRNA及K ir6.2 mRNA表达水平无明显改变。第24周，糖尿病大鼠SUR2 mRNA表达水平较12周下降，也低于同期正常对照大鼠，但尚无统计学意义；格列美脲治疗组SUR2受体密度无明显改变；KATPmRNA表达水平变化不大。结论自发性糖尿病GK大鼠的糖尿病状态不影响心肌KATP通道表达水平；治疗剂量的格列美脲对糖尿病大鼠心肌组织KATP通道表达无明显影响。     

无感染性休克的腹膜炎患者肠系膜血管KATP通道表达减少

目的 探讨KATP通道在确诊无感染性休克的腹膜炎患者肠系膜血管中的表达.方法 收集16例腹膜炎患者和14例非腹膜炎患者的肠系膜动脉血管,检测其KATP通道的mRNA表达.结果 腹膜炎组(n=16)Kir 6.1 mRNA相对表达量为(0.358±0.150),SUR2B mRNA相对表达量为(0.324±0.211);非腹膜炎组(n=14)Kir 6.1 mRNA相对表达量为(1.125±0.554),SUR2B mRNA相对表达量为(1.058±0.338);无感染性休克发生时,腹膜炎组KATP通道表达较非腹膜炎组减少,差异有统计学意义(P<0.01).结论 在单纯腹膜炎到脓毒血症的发展过程中,血管KATP的表达水平是变化的,该研究可能为寻找治疗腹膜炎感染性休克的时间窗提供了线索.     

大电导钙敏感钾通道在人足月妊娠子宫平滑肌组织中的表达

目的了解大电导钙敏感钾通道（large-conductance calcium-sensitive potassium channel,BKCa）蛋白在人足月妊娠未临产及临产子宫下段平滑肌组织中的表达情况,探讨BKCa在分娩启动中的作用。方法采用Western blot分别测定人足月妊娠未临产及临产子宫下段平滑肌组织中BKCa蛋白α亚单位的表达。结果人足月妊娠未临产子宫下段平滑肌组织中BKCa蛋白α亚单位的相对表达量为1.18＋0.20 （n=9）,足月妊娠临产子宫下段平滑肌组织中BKCa蛋白α亚单位的相对表达量为0.60＋0.08（n=11）,二者统计学差异显著（P=0.009）。结论人足月妊娠未临产子宫下段平滑肌组织BKCa 蛋白的表达高于临产子宫下段平滑肌组织,提示BKCa在宫缩发动中具有一定作用。     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

Development on Adjustable Calibration Marker for Shock Wave Focus

Shock wave lithotripsy （SWL） is a treatment of choice for upper urinary stones. However, this procedure is inappropriate for obese patients because the focus is often unable to reach the target owing to the limited focal distance in shock wave source. Although treating such patients in a blast path may increase the application length of shock wave source, it＇s difficult to find this path on the lithotripter monitor. For this reason, we invented an adjustable calibration marker in order to set an effective focus in the shock wave hath.     

Study on the TCM Pathogenesis of Angiopathic Complications of Type II Diabetes

Excess production of reactive oxygen species(ROS)of mitochondrion mediated by hyperglycemia is the common pathogenesis of angiopathic complications of diabetes.TCM holds that the damp from the dysfunction of spleen.kidney and liver is the causative factor of complications of diabetes.This is similar to the mechanism of Ros resulting in angiopathic complications of diabetes.When the angiopathic complications of type II diabetes mellitus(T2DM)are difierentiated as caused by turbid damp in TCM can be explained as ROS.Since the obstruction of pathogenic damp in channels and collaterals is said to be the main pathogenesis,the treating principle should be dissolving the damp to remove the obstruction.     

Leptin, Ghrelin and TNF-α before and after Hypo-caloric Traditional Chinese Diet and Auricular Acupuncture

INTRODUCTION Obesity is a complex emergent problem, which can be possibly solved not only by the diet but also by the life style and promotion of a constant physical exercise. 1, 2 No doubt careful attentions must be given to the nutritional condition of obese people, the dietary habits, the somatic build (i.e. distribution of fat mass) and the organic functions linked to formation of the fat mass. All the parameters should be constantly monitored before, during and after a diet treatment. 3, 4, 5     

Relationship between Dysglycemia and Carotid Atherosclerosis in Tibetan Population

People with dysglycemia are at high risk for atherosclerotic diseases. This study aims at investigating the atherosclerotic vascular damage in dysglycemia and its metabolic origin in Tibetan population.     

Acupuncture Combined with Spinal Tui Na for Treatment of Primary Dysmenorrhea in 30 Cases

Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.     

Luo Lingjie's Experience in Treating Chronic Nephropathy

In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.     

Dr.Zhang Ren's Experience in the Acupuncture Treatment of Different Diseases with the Same Therapeutic Principle

Dr.Zhang Ren,the chief physician,is the chairman of Shanghai Acupuncture and Moxibustion Association.Having been engaged in medicine for about 40 years,he is experienced in treating various intractable diseases.In his long years of clinical practice,he advocates taking the TCM differentiation as the basis to seek for the acupuncture method for treatment of modern intractable diseases.The author of this essay had the fortune to follow Dr.Zhang in study.The following is a summary of Dr.Zhang's experience in the acupuncture treatment for different intractable diseases with the same therapeutic principle.