抗纤维化短肽对血清诱导的心脏成纤维细胞增殖和胶原合成与Ⅰ、Ⅲ型胶原表达抑制作用的实验研究

①目的 探讨N-乙酰基-丝氨酰-天门冬酰-赖氨酰-脯氨酸(AcSDKP)对不同浓度血清(FBS)诱导的大鼠心脏成纤维细胞增殖和胶原合成的调节作用.②方法 选用新生大鼠心脏成纤维细胞;采用3H-TdR掺入法检测心脏成纤维细胞的增殖;采用3H-脯氨酸掺入法检测心脏成纤维细胞胶原的合成,采用westernblot法检测心脏成纤维细胞Ⅰ型与Ⅲ型胶原的表达.③结果 在0.4%、2%和10%几种血清浓度的条件下,随着血清农度的增加,反映心脏成纤维细胞增殖3H-TdR掺入量和胶原合成的3H-脯氨酸掺入量增加.表明一定浓度的血清能诱导心脏成纤维细胞增殖和胶原合成.与0.4%血清的基础培养条件相比较,10%高浓度血清能刺激心脏成纤维细胞Ⅰ、Ⅲ型胶原蛋白的表达.在10-10～10-8mol/L浓度范围内.AcSDKP对10%诱导的心脏成纤维细胞增殖和胶原合成有抑制作用.并且在10-9mol/L时,AcSDKP对心脏成纤维细胞增殖、胶原合成抑制作用最强.同时10-9mol/L的AcSDKP对心脏成纤维细胞Ⅰ、Ⅲ型胶原蛋白的表达也有明显的抑制作用.④结论 AcSDKP对血清介导的心脏成纤维细胞增殖、胶原合成以及Ⅰ、Ⅲ型胶原蛋白的表达有明显抑制作用.     

干扰素α对肝纤维化鼠星状细胞Ⅰ和Ⅲ型前胶原mRNA表达及胶原沉积的影响

目的　观察干扰素α对大鼠肝纤维化时星状细胞增殖、Ⅰ、Ⅲ型前胶原mRNA表达和肝脏胶原沉积的影响。方法　以CCl4制造肝纤维化模型 ,培养肝星状细胞 ,抽提RNA ,用地高辛标记Ⅰ、Ⅲ型前胶原和胶原酶cDNA探针 ,Northern杂交分析Ⅰ、Ⅲ型前胶原和胶原酶mRNA表达 ,Dotblot测定大鼠肝Ⅰ、Ⅲ型胶原沉积。分别用3H TdR和3H 脯氨酸掺入观察干扰素α对星状细胞增殖和胶原合成的影响。结果　干扰素α对3H TdR和3H 脯氨酸掺入的星状细胞 ,在 4、2 4、4 8小时与空白对照比较 ,呈明显抑制作用 ,其抑制率分别为 16%、19%、2 7%。干扰素α浓度≥ 12 5U/ml时呈现明显抑制作用 ,且随浓度增加抑制作用加强。在鼠肝纤维化早、中、晚期 ,干扰素α组星状细胞Ⅰ、Ⅲ型前胶原mRNA表达与模型对照组比较均降低。星状细胞间质胶原酶mRNA表达 :在模型对照组早、中期均高于正常对照组 ,而晚期与正常对照组差异无显著意义 ;在干扰素α组早、中、晚各期 ,星状细胞间质胶原酶mRNA表达与模型对照组差异无显著意义。肝内Ⅰ、Ⅲ型胶原沉积 :干扰素α组早、中期均低于模型对照组 ,而晚期与模型对照组差异无显著意义。结论　干扰素α可抑制星状细胞的增殖和胶原合成 ,下调肝纤维时Ⅰ、Ⅲ型前胶原mRNA表达 ,减少肝脏Ⅰ、Ⅲ型胶原沉积。     

高糖状态下心肌成纤维细胞Ⅰ、Ⅲ型胶原表达变化的观察

目的探讨高糖对大鼠心肌成纤维细胞Ⅰ、Ⅲ型胶原表达的影响。方法采用胰酶消化法和差速贴壁分离法获取心肌成纤维细胞,采用正常糖(5.5mmol/L,对照组)和高糖(25mmol/L,高糖组)干预。用实时荧光定量PCR(Real-time PCR)方法检测Ⅰ、Ⅲ型前胶原mRNA表达,酶联免疫吸附测定法(ELISA)观察Ⅰ、Ⅲ型胶原蛋白水平的变化。结果与对照组比较,高糖刺激12h可使心肌成纤维细胞Ⅰ、Ⅲ型前胶原mRNA表达增加,Ⅰ、Ⅲ前胶原mRNA表达在12h升高,在24h达高峰,Ⅰ型前胶原mRNA升高幅度高于Ⅲ型前胶原mRNA;高糖刺激48h可使Ⅰ、Ⅲ型胶原蛋白表达增加,Ⅰ型胶原蛋白升高幅度高于Ⅲ型胶原。结论高糖可促进大鼠心肌成纤维细胞合成Ⅰ、Ⅲ型胶原。     

抗纤维化短肽对血清诱导的心脏成纤维细胞增殖和胶原合成与I、III型胶原表达抑制作用的实验研究

①目的探讨N-乙酰基-丝氨酰-天门冬酰-赖氨酰-脯氨酸(AcSDKP)对不同浓度血清(FBS)诱导的大鼠心脏成纤维细胞增殖和胶原合成的调节作用。②方法选用新生大鼠心脏成纤维细胞;采用3H-TdR掺入法检测心脏成纤维细胞的增殖;采用3H-脯氨酸掺入法检测心脏成纤维细胞胶原的合成,采用westernblot法检测心脏成纤维细胞I型与III型胶原的表达。③结果在0.4%、2%和10%几种血清浓度的条件下,随着血清浓度的增加,反映心脏成纤维细胞增殖3H-TdR掺入量和胶原合成的3H-脯氨酸掺入量增加。表明一定浓度的血清能诱导心脏成纤维细胞增殖和胶原合成。与0.4%血清的基础培养条件相比较,10%高浓度血清能刺激心脏成纤维细胞I、III型胶原蛋白的表达。在10-10~10-8mol/L浓度范围内,AcSDKP对10%诱导的心脏成纤维细胞增殖和胶原合成有抑制作用,并且在10-9mol/L时,AcSDKP对心脏成纤维细胞增殖、胶原合成抑制作用最强。同时10-9mol/L的AcSDKP对心脏成纤维细胞I、III型胶原蛋白的表达也有明显的抑制作用。④结论AcSDKP对血清介导的心脏成纤维细胞增殖、胶原合成以及I、III型胶原蛋...     

YC-1对低氧诱导的大鼠肺动脉外膜成纤维细胞增殖及胶原合成的影响

目的初步探讨低氧诱导因子抑制剂3-(5'-羟基甲基-2'-呋喃基)-1-苯基吲哚(YC-1)对低氧诱导的大鼠肺动脉外膜成纤维细胞增殖和胶原生成的影响,以及可能的分子机制。方法在低氧条件下培养的大鼠肺动脉成纤维细胞,将细胞随机分为常氧组、低氧组、低氧+YC-1(0.01、0.05和0.1 mmol/L)组。分别采用MTT法检测细胞增殖情况,3~H-脯氨酸掺入法测定胶原合成,蛋白免疫印迹法检测低氧诱导因子-1α(HIF-1α)蛋白的表达,逆转录-聚合酶链反应检测转化生长因子-β1(TGF-β1)mRNA表达情况。结果低氧组的成纤维细胞增殖及3~H-脯氨酸掺入量显著高于常氧组(均P0.01)。YC-1组的成纤维细胞增殖及3~H-脯氨酸掺入量显著低于低氧组,但仍高于常氧组;低氧组HIF-1α蛋白、TGF-β1 mRNA的表达明显高于常氧组(P0.01),YC-1呈剂量依赖性抑制缺氧刺激的HIF-1α蛋白、TGF-β1 mRNA表达,其中YC-1 0.1 mmol/L组中HIF-1α蛋白及TGF-β1 mRNA的表达分别抑制了65%和61%(均P0.01)。结论 YC-1能抑制低氧诱导的大鼠肺动脉外膜成纤维细胞增殖及胶原合成,并呈剂量依赖关系,其作用可能与下调HIF-1α、TGF-β1 mRNA表达有关。     

甲状腺素对血管紧张素Ⅱ所致心肌成纤维细胞胶原合成改变的影响

目的 :以AngⅡ处理培养的心肌成纤维细胞 ,促使细胞中胶原的合成发生改变 ,观测T3对AngⅡ所致细胞胶原合成改变的影响。方法 :以AngⅡ及T3分别或同时作用于培养的大鼠心肌成纤维细胞 ,通过测定3H TdR和3H Leu掺入来了解成纤维细胞增殖率和蛋白质合成率 ,同时用免疫细胞化学方法检测成纤维细胞中Ⅰ、Ⅲ型胶原的表达。结果 :AngⅡ使成纤维细胞3H TdR和3H Leu掺入增加 ,同时细胞中Ⅰ、Ⅲ型胶原的表达也显著增加。T3组成纤维细胞3H TdR和3H Leu掺入虽然也增加 ,但T3组细胞中Ⅰ、Ⅲ型胶原的表达却呈显著性降低。当T3与AngⅡ共同作用于成纤维细胞时 ,与T3组和AngⅡ组比较 ,3H TdR和3H Leu的掺入率没有发生显著性的变化 ;与AngⅡ组比较 ,细胞中Ⅰ、Ⅲ型胶原的表达显著性降低 ,与对照组的表达一致。结论 :T3能降低AngⅡ所致的心肌成纤维细胞中Ⅰ、Ⅲ型胶原合成的增加     

干扰素α对肝纤维化鼠星状细胞I和Ⅲ型前胶原mRNA表达及胶原？…

目的 观察干扰素α对大鼠纤维化时星状细胞增殖,Ｉ,Ⅲ型前胶原ｍＲＮＡ表达和肝脏胶原沉积的影响。方法 以ＣＣｌ４制造肝纤维化模型,培养肝星状细胞,抽提ＲＮＡ,用地高辛标记Ｉ,Ⅲ型前胶原和胶原酶ｃＤｎＡ探针,Ｎｏｒｔｈｅｒｎ杂交分析Ｉ,Ⅲ型前胶原和胶原酶ｍＲＮＡ表达,Ｄｏｔｂｌｏｔ测定大鼠肝Ｉ,Ⅲ型胶原沉积,分别用＾３Ｈ－ＴｄＲ和＾３Ｈ－脯氨酸掺入观察干扰素α对星状细胞增殖和胶原合成的影响。结果 干扰     

脂多糖对正常人皮肤成纤维细胞Ⅰ、Ⅲ型前胶原及胶原酶mRNA表达的调控及意义

目的研究细菌脂多糖（LPS）对增生性瘢痕患者正常皮肤成纤维细胞Ⅰ、Ⅲ型前胶原及胶原酶mRNA表达的影响,以了解LPS在增生性瘢痕形成中的生物学作用。方法体外培养增生性瘢痕患者瘢痕组织及正常皮肤成纤维细胞,应用不同浓度（0．005—1．0μg／m1）的大肠杆菌LPS（E．coli055：B5）对正常皮肤成纤维细胞进行刺激,并对刺激后细胞传代至表型稳定（第8代）,采用逆转录-聚合酶链反应（RT—PCR）法检测LPS对正常皮肤成纤维细胞Ⅰ、Ⅲ型前胶原及胶原酶mRNA的表达的调控作用,观察剂量一效应关系。分别以同一个体相同代数的瘢痕组织成纤维细胞和未经LPS刺激的正常皮肤成纤维细胞做阳性对照和阴性对照。结果LPS刺激浓度在0．005．0．5μg／ml范围内促进正常皮肤成纤维细胞Ⅰ、Ⅲ型前胶原mRNA表达,抑制胶原酶mRNA表达（均P〈0．01）,均在0．1μg／ml浓度点作用达高峰;当LPS刺激浓度到达1．0μg／ml时,抑制正常皮肤成纤维细胞Ⅰ、Ⅲ型前胶原mRNA表达,促进胶原酶mRNA表达,且均显著低于阴性对照组（均P〈0．01）。当LPS刺激浓度为0．1μg／ml时,正常皮肤成纤维细胞Ⅰ、Ⅲ型前胶原mRNA和胶原酶mRNA表达量与阳性对照组近似（均P〉0．05）。结论在一定浓度范围内LPS促进成纤维细胞Ⅰ、Ⅲ型前胶原mRNA表达、抑制胶原酶mRNA表达。LPS可能是增生性瘢痕形成的原始诱导因素之一。     

干扰素α-2b局部治疗对增生性瘢痕Ⅰ、Ⅲ型胶原蛋白及前胶原蛋白基因原位表达作用的研究

目的探讨干扰素α-2b在活体上对增生性瘢痕Ⅰ、Ⅲ型胶原的作用及作用环节.方法对局部注射干扰素α-2b后3天及7天的6例增生性瘢痕应用免疫组织化学和原位杂交技术,进行了Ⅰ、Ⅲ型胶原蛋白和Ⅰ、Ⅲ型前胶原mRNA的原位表达的测定. 结果①干扰素α-2b在局部注射后7天,Ⅰ型胶原蛋白量减少(P＜0.05),但Ⅲ型胶原蛋白量无明显减少(P＞0.05);②干扰素α-2b在局部注射后3天,Ⅰ、Ⅲ型前胶原mRNA表达明显抑制 ,至注射后7天,Ⅰ型前胶原mRNA被进一步抑制,而对Ⅲ型前胶原mRNA抑制缓解.③干扰素α-2b对Ⅰ型前胶原mRNA表达的抑制要比Ⅲ型前胶原mRNA强. 结论干扰素α-2b通过抑制前胶原基因的表达从而抑制Ⅰ、Ⅲ型胶原蛋白的合成.     

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…     

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.     

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     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

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.