缺血性脑血管病患者颈动脉斑块与TXB2、OxLDL、Lp(a)、Hcy相关性分析

目的探讨缺血性脑血管病的颈动脉斑块与TXB2、OxLDL、Lp(a)、Hcy的相关性,以更好的对该病进行预防、治疗。方法35例急性缺血性卒中患者和20名正常对照组行颈动脉血管彩色多普勒超声检测颈动脉斑块,采用ELISA双抗体夹心法测定血浆TXB2、OxLDL、Lp(a),采用荧光偏振免疫分析法测定Hcy的含量,两组相比,并作相关性分析。结果斑块最大厚度、血浆TXB2、OxLDL、Lp(a)、Hcy的含量均高于正常对照组(P<0.01)。斑块最大厚度与TXB2、OxLDL、Lp(a)呈正相关。结论颈动脉斑块,血浆TXB2、OxLDL、Lp(a)、Hcy可能与缺血性脑血管病相关;TXB2、OxLDL、Lp(a)可能参与促进颈动脉粥样硬化斑块的形成。     

Analysis of cell-cycle kinetics and sulfur amino acid metabolism in methionine-dependent tumor cell lines; the effect of homocysteine supplementation

Methionine dependence is a feature unique to cancer cells, exhibited as inability to grow in a methionine-depleted environment supplemented with homocysteine, the immediate metabolic precursor of methionine. This study explores the effect of methionine depletion and homocysteine supplementation on the viability, sulfur amino acid metabolism and cell-cycle kinetics of normal and cancer cells, as well as their ability to recover from the treatments. An array of cells including hepatomas (HTC, Phi-1), prostate adenocarcinomas (PC-3) and transformed (3T3) and normal (HS-27) fibroblasts, has been used aiming to evaluate the importance of tissue specificity. All cell lines proliferated well in methionine-complete media (M+H-), whilst only the normal fibroblasts HS-27 grew in methionine-depleted homocysteine-supplemented media (M-H+). None of the tested cell lines were able to grow in media without methionine or homocysteine (M-H-). HTC was the only cell line that did not recover from the M-H+ treatment whilst PC-3 did not recover from the M-H- treatment. Methionine and homocysteine depletion (M-H+ and M-H-) were found to induce arrest at different phases of the cell cycle, depending on the cell line: the methionine-dependent HTC, PC-3 and 3T3 arrested at the S and G2/M phase, whilst Phi-1 and the methionine-independent HS-27 accumulated in the G1 phase. The cell-cycle kinetics showed that the observed blockades were reversible. The information resulting from these studies is important for not only the behavior of cancer cells, but also for appreciating the potential of developing cancer therapies based on methionine-depletion strategies.     

丁苯酞软胶囊治疗脑梗死的临床研究

目的探讨丁苯酞软胶囊治疗脑梗死的临床疗效。方法选取2014年5月—2016年5月新汶矿业集团莱芜中心医院神经内分泌科收治的脑梗死患者97例为研究对象,所有患者随机分为对照组(49例)和治疗组(48例)。对照组在溶栓24 h无出血征象后口服阿司匹林肠溶片,300 mg/次,1次/d。治疗组口服丁苯酞软胶囊,0.2 g/次,3次/d。两组患者均连续治疗2周。观察两组的临床疗效,比较两组的血管内皮功能和血清同型半胱氨酸(Hcy)水平。结果治疗后,对照组和治疗组的总有效率分别为55.1%、77.1%,两组比较差异有统计学意义(P0.05)。治疗后,两组内皮素-1(ET-1)、Hcy水平显著降低,而一氧化氮(NO)、内皮型一氧化氮合酶(e NOS)水平显著升高,同组治疗前后比较差异有统计学意义(P0.05);且治疗组这些观察指标的改善程度明显优于对照组,两组比较差异具有统计学意义(P0.05)。两组不良反应发生率比较差异无统计学意义。结论丁苯酞软胶囊治疗脑梗死具有较好的临床疗效,能降低患者ET-1和Hcy水平,升高NO、e NOS水平,改善血管内皮功能,缓解神经功能损伤,具有一定临床推广应用价值。     

系统性红斑狼疮血清Hcy水平与病情严重程度的相关性研究

目的探讨系统性红斑狼疮(SLE)血清同型半胱氨酸(Hcy)水平与病情严重程度的相关性。方法收集我院近3年收治的80例系统性红斑狼疮患者,根据患者病情分为活动性SLE组(35例)和非活动性SLE组(45例),选取正常患者40例为对照组,分析血清Hcy水平与病情严重程度相关性。结果血清Hcy水平在三组间差异具有统计学意义(P<0.05),其中SLE活动组和SLE非活动组水平高于对照组,SLE活动组高于SLE非活动组,差异具有统计学意义(P<0.05);SLE活动组SLEDAI评分高于SLE非活动组,差异具有统计学意义(P<0.05);经过Pearson相关分析显示血清Hcy和SLEDAI评分呈现明显正相关关系(r=0.564,P<0.05)。结论血清Hcy水平与病情严重程度呈现正相关关系,患者病情越严重Hcy水平越高。     

芪丹通络颗粒联合硫辛酸治疗糖尿病周围神经病变的临床研究

目的探讨芪丹通络颗粒联合硫辛酸注射液治疗糖尿病周围神经病变的临床疗效。方法选取2015年5月-2018年5月在成都市青白江区人民医院治疗的86例糖尿病周围神经病变患者,根据用药差别分为对照组(43例)和治疗组(43例)。对照组静脉滴注硫辛酸注射液,12 mL加入生理盐水250 mL,2次/d;治疗组在对照组的基础上口服芪丹通络颗粒,8 g/次,3次/d。两组患者均经4周治疗。观察两组患者临床疗效,同时比较治疗前后两组患者MDNS和TCSS评分,神经传导速度,及血清同型半胱氨酸(Hcy)、核因子-κB(NF-κB)、内皮素-1(ET-1)和一氧化氮(NO)水平。结果治疗后,对照组临床有效率为62.79%,显著低于治疗组的86.05%,两组比较差异有统计学意义(P<0.05)。经治疗,两组MDNS评分、TCSS评分均明显降低(P<0.05),且治疗组下降更明显(P<0.05)。经治疗,两组患者正中神经和腓总神经的运动神经传导速(MNCV)、感觉神经传导速度(SNCV)均明显增快(P<0.05),且治疗组传导速度明显快于对照组(P<0.05)。经治疗,两组患者血清Hcy、NF-κB、ET-1水平均明显降低(P<0.05),NO水平明显升高(P<0.05),且治疗组患者血清Hcy、NF-κB、ET-1和NO水平明显好于对照组(P<0.05)。结论芪丹通络颗粒联合硫辛酸注射液治疗糖尿病周围神经病变可有效改善患者症状,促进神经功能恢复,具有一定的临床推广应用价值。     

卡维地洛联合缬沙坦氢氯噻嗪治疗顽固性高血压的临床研究

目的探讨卡维地洛联合缬沙坦氢氯噻嗪治疗顽固性高血压的临床疗效。方法选择2017年4月—2018年4月在延安大学附属医院治疗的顽固性高血压患者86例,根据用药差别分为对照组(43例)和治疗组(43例)。对照组口服缬沙坦氢氯噻嗪片,1片/次,1次/d;治疗组在对照组基础上口服卡维地洛片,起始6.25 mg/次,2次/d,根据血压情况成倍增减剂量,最大剂量小于50 mg/d。两组患者均治疗4周。观察两组患者临床疗效,同时比较治疗前后两组患者血压、HAMA评分、HAMD评分、SPIEGEL评分、SF-36评分、肱动脉内皮依赖性舒张功能(EDD)、肱动脉非内皮依赖的舒张功能(NMD)及血清C反应蛋白(CRP)、同型半胱氨酸(Hcy)、内皮素-1(ET-1)、血管性血友病因子(v WF)和血管紧张素Ⅱ(AngⅡ)水平。结果治疗后,对照组临床有效率为79.07%,显著低于治疗组的95.35%,两组比较差异具有统计学意义(P0.05)。经治疗,两组患者SBP、DBP均明显下降(P0.05),且治疗组患者收缩压(SBP)、舒张压(DBP)明显低于对照组患者(P0.05)。经治疗,两组HAMA、HAMD和SPIEGEL评分明显降低(P0.05),SF-36评分明显升高(P0.05),且治疗组患者HAMA、HAMD、SPIEGEL和SF-36评分明显优于对照组患者(P0.05)。经治疗,两组患者EDD、NMD均明显升高(P0.05),且治疗组患者EDD、NMD明显高于对照组患者(P0.05)。经治疗,两组患者血清CRP、Hcy、ET-1、v WF、AngⅡ均明显降低(P0.05),且治疗组患者上述血清细胞因子明显低于对照组(P0.05)。结论卡维地洛片联合缬沙坦氢氯噻嗪片治疗顽固性高血压可有效降低患者血压水平,促进血管内皮功能改善,改善患者焦虑、抑郁情绪,促进患者睡眠及生活质量提高。     

厄贝沙坦联合叶酸对H型高血压患者血压及血浆同型半胱氨酸水平的影响

目的:观察厄贝沙坦联合叶酸对H型高血压患者血压及血浆同型半胱氨酸水平的影响。方法:将100例H型高血压患者按随机数字表法均分为对照组和治疗组。对照组患者给予厄贝沙坦150 mg/次,qd,口服;治疗组患者在对照组治疗基础上给予叶酸0.4 mg,qd,口服。两组患者疗程均为3个月。观察两组患者治疗前后肱踝脉搏波传导速度(baPWV)、血浆同型半胱氨酸(Hcy)水平、血压的变化及不良反应发生情况。结果:治疗前,两组患者血浆Hcy、baPWV、舒张压、收缩压比较差异均无统计学意义(P>0.05);治疗后,两组患者血浆Hcy、baPWV、舒张压、收缩压均显著低于同组治疗前,且治疗组低于对照组,两组比较差异均有统计学意义(P<0.05)。两组患者治疗期间均未见明显不良反应发生。结论:厄贝沙坦联合叶酸可降低H型高血压患者血压,改善患者Hcy及baPWV水平。     

Dietary intake of S-(α-carboxybutyl)-dl-homocysteine induces hyperhomocysteinemia in rats

Betaine homocysteine S-methyltransferase (BHMT) catalyzes the transfer of a methyl group from betaine to homocysteine (Hcy), forming dimethylglycine and methionine. We previously showed that inhibiting BHMT in mice by intraperitoneal injection of S-(α-carboxybutyl)-dl-homocysteine (CBHcy) results in hyperhomocysteinemia. In the present study, CBHcy was fed to rats to determine whether it could be absorbed and cause hyperhomocysteinemia as observed in the intraperitoneal administration of the compound in mice. We hypothesized that dietary administered CBHcy will be absorbed and will result in the inhibition of BHMT and cause hyperhomocysteinemia. Rats were meal-fed every 8 hours an l-amino acid–defined diet either containing or devoid of CBHcy (5 mg per meal) for 3 days. The treatment decreased liver BHMT activity by 90% and had no effect on methionine synthase, methylenetetrahydrofolate reductase, phosphatidylethanolamine N-methyltransferase, and CTP:phosphocholine cytidylyltransferase activities. In contrast, cystathionine β-synthase activity and immunodetectable protein decreased (56% and 26%, respectively) and glycine N-methyltransferase activity increased (52%) in CBHcy-treated rats. Liver S-adenosylmethionine levels decreased by 25% in CBHcy-treated rats, and S-adenosylhomocysteine levels did not change. Furthermore, plasma choline decreased (22%) and plasma betaine increased (15-fold) in CBHcy-treated rats. The treatment had no effect on global DNA and CpG island methylation, liver histology, and plasma markers of liver damage. We conclude that CBHcy-mediated BHMT inhibition causes an elevation in total plasma Hcy that is not normalized by the folate-dependent conversion of Hcy to methionine. Furthermore, metabolic changes caused by BHMT inhibition affect cystathionine β-synthase and glycine N-methyltransferase activities, which further deteriorate plasma Hcy levels.     

Hcy联合凝血功能检测在早孕先兆流产中的应用

目的：探讨同型半胱氨酸（ Hcy）联合凝血功能相关指标的检测在早孕先兆流产患者中的应用价值。方法选取59例先兆流产患者为研究组,另选取81例正常妊娠妇女为对照组。测定Hcy、纤维蛋白原（ Fg）、D－二聚体（ D－D）、血小板（PLT）,并对结果进行分析。结果研究组的Hcy（5．53±1．13μmol／L）、Fg（4．00±0．89g／L）较对照组的Hcy（4．63±1．26μmol／L）、Fg（3．45±0．73g／L）明显升高,差异均有统计学意义（t值分别为3．82、4．64,均P＜0．05）;同样,在研究组中D－D和PLT水平也高于对照组,差异均有统计学意义（t值分别为1．75、6．96,均P＜0．05）。经Spearman相关性分析得出,Hcy分别与Fg、D－D及PLT呈正相关关系（r值分别为0．721、0．447、0．368,均P＜0．05）。对59例先兆流产患者进行随访,按妊娠结局分为顺利分娩、难免流产、过期流产3组,单因素方差分析显示3组Hcy、D－D水平比较差异均有统计学意义（ F值分别为59．348、15．916,均P＜0．05）,Fg和PLT水平比较差异均无统计学意义（均P＞0．05）。结论联合检测血Hcy、Fg、D－D、PLT水平可以判断早期妊娠妇女体内的高凝状态,从而为分析早期先兆流产病因提供依据,更加合理地指导临床治疗,以阻止不良妊娠结局的发生。     

血清hs-CRP、Hcy与妊娠期糖尿病及妊娠结局的关系

目的：探讨联合检测超敏C反应蛋白( hs-CRP)和同型半胱氨酸( Hcy)水平在妊娠期糖尿病( GDM)诊断及对妊娠结局的预测价值。方法选择2012年1月至2014年3月在安吉县第三人民医院门诊接受检查的GDM患者35例作为观察组;选择同期经临床排除GDM的正常孕产妇35例作为对照组。检测两组患者的hs-CRP和Hcy、空腹血糖和胰岛素水平,并跟踪两组妊娠结局。结果观察组患者空腹血糖、胰岛素、hs-CRP 和 Hcy 水平均高于对照组,均有显著性差异( t 值分别为13.07、12.02、3.65和12.02,均P<0.05);观察组不良反应发生率为34.3%(12/35),对照组为11.4%(4/35),具有显著性差异(χ2=5.19,P<0.05)。有16例发生不良妊娠结局,其与54例正常妊娠者的hs-CRP和Hcy水平比较均明显增高,并有显著性差异( t值分别为7.88、14.17,均P<0.05)。结论妊娠女性的hs-CRP和Hcy水平与GDM发生具有密切联系,且高水平hs-CRP和Hcy对不良妊娠结局具有一定的预测作用,应该引起产科注意。