磷酸肌酸钠对行腹部手术老年冠心病患者心肌保护作用的评价

目的：观察磷酸肌酸钠对老年冠心病患者动脉血氧分压、心肌酶及心律失常的影响。方法：选择60例ASAⅡ-Ⅲ级,行腹部手术的冠心病患者,随机分为对照组和实验组。实验组麻醉后使用磷酸肌酸钠,对照组使用生理盐水。两组分别在麻醉后、术后1h、术后2h及术毕时行血气分析观察动脉血氧分压的变化,于术后24h检测磷酸肌酸激酶同工酶（CPK—MB）和乳酸脱氢酶（LDH）水平。记录围术期Ⅱ导联心电图室性心律失常的发生情况。结果：与对照组相比,实验纽术中1h、术中2h和术毕动脉血氧分压明显提高;术后24h心肌酶较术前均升高,但实验组上升幅度较对照组明显减少;围术期实验组室性心律失常的发生率为10％,明显低于对照组。结论磷酸肌酸钠能提高老年冠心病患者围术期的动脉血氧分压,心肌酶得到明显改善,减少室性心律失常的发生,具有明显的心肌保护作用。     

磷酸肌酸对急诊经皮冠状动脉介入治疗术患者左心功能的影响

目的：评价急诊经皮冠状动脉介入治疗（PCI）中应用磷酸肌酸对左心功能的影响。方法：对40例急性前壁心肌梗死患者随机分为对照组（20）与治疗组（20）。治疗组20例在常规治疗的基础上,PCI术前后采用磷酸肌酸注射液静脉滴注,观察术后1h心电图ST段抬高总和回落百分比（sumSTR）、磷酸肌酸激酶同功酶（CK-MB）峰值及左心室射血分数（LVEF）。结果：治疗组患者术后CK-MB峰值低于对照组（P〈0.05）。sumSTR治疗组下降幅度较对照组明显（P〈0.05）。PCI后4周无论治疗组还是对照组LVEF均比3d时有明显改善（P〈0.05）,4周时治疗组LVEF较对照组改善更显著（P〈0.05）。结论：急性心肌梗死患者PCI术围术期静脉应用磷酸肌酸注射液能减轻心肌缺血-再灌注损伤,改善左心功能。     

血浆N末端脑钠肽前体测定在急性心肌梗死中的应用

目的探讨N末端脑钠肽前体(NT-proBNP)在急性心肌梗死(AMI)患者血浆中的变化水平及临床意义。方法选取32例健康体检者(对照组)和54例AMI患者,比较两组NT-proBNP、肌酸激酶同工酶MB(CK-MB)的变化情况。对AMI患者按照Killip分级法分级,分为Ⅰ～Ⅳ级,对比各级间NT-proBNP、CK-MB变化情况,同时观察AMI患者NT-proBNP浓度与CK-MB浓度的相关性。结果对照组和AMI患者组NT-proBNP、CK-MB浓度均存在显著差异(P<0.01),Kil-lip分级各组间NT-proBNP、CK-MB浓度存在显著差异(P<0.01),AMI患者NT-proBNP浓度与CK-MB浓度间呈正相关(P<0.001)。结论 NT-proBNP的检测不仅可以作为诊断急性心肌梗死的依据,而且其水平高低可以反映急性心肌梗死后心功能的情况。     

3种心肌损伤标记物在急性心肌梗死早期诊断中的价值

目的 探讨血清心肌钙蛋白Ⅰ(cTnI),肌红蛋白(Mb)和肌酸激酶同工酶(CK-MB)在早期诊断急性心肌梗死(AMI)中的价值.方法 对40例急性心肌梗死患者及40例健康老年人(对照组)进行cTnI、Mb和CK-MB检测.结果 急性心肌梗死组血清cTnI、Mb和CK-MB含量显著高于对照组(P＜0.01).结论 急性心肌梗死患者cTnI、Mb和CK-MB的联合检测有助于早期诊断急性心肌梗死和病情分析.     

皮肌炎患者外周血CD4~+ T细胞中TGF-β_1、IL-10 mRNA的表达及临床意义

目的:检测活动期皮肌炎(DM)患者外周血CD4+T细胞转化生长因子β1(TGF-β1)、白介素10(IL-10)的表达以及血清肌酸激酶(CK)含量。初步探讨CD4+T细胞TGF-β1、IL-10在DM发病机制中的作用。方法:收集15例活动期DM患者和15例健康对照者外周血,采用免疫磁珠分离获得CD4+T细胞,通过逆转录聚合酶链法(RT-PCR)检测出各组TGF-β1、IL-10表达水平。观察CD4+T细胞中TGF-β1、IL-10表达与血清CK含量的相关性。结果:活动期DM患者外周血CD4+T细胞中TGF-β1和IL-10表达量显著高于健康对照,血清CK含量与CD4+T细胞TGF-β1表达量呈中度正相关。结论:活动期DM患者外周血CD4+T细胞中TGF-β1和IL-10 mRNA表达显著升高,可能与DM疾病发生有关。     

Urine screening for patients with developmental disabilities detected a patient with creatine transporter deficiency due to a novel missense mutation in SLC6A8

Creatine transporter deficiency (CTD) is an example of X-linked intellectual disability syndromes, caused by mutations in SLC6A8 on Xq28. Although this is the second most frequent genetic cause of intellectual disabilities in Europe or America after Fragile X syndrome, information on the morbidity of this disease is limited in Japan. Using the HPLC screening method we have established recently, we examined samples of urine of 105 patients (73 males and 32 females) with developmental disabilities at our medical center. And we have found a family with three ID boys with a novel missense mutation in SLC6A8. This is the second report of a Japanese family case of CTD. A systematic diagnostic system of this syndrome should be established in Japan to enable us to estimate its frequency and treatment.     

Systemic and local myotoxicity induced by snake venom group II phospholipases A2: comparison between crotoxin, crotoxin B and a Lys49 PLA2 homologue.

The patterns of myotoxicity induced in mice by crotoxin, crotoxin B and a Lys49 phospholipase A(2) (PLA(2)) homologue were compared. Lys49 PLA(2)-induced local myotoxicity is reflected by creatine kinase (CK) loss in injected gastrocnemius muscle, and by a profile of CK increase in plasma characterized by a rapid increment and drop after intramuscular injection, and by a lack of CK increase in plasma after intravenous injection. In contrast, crotoxin and crotoxin B, which induce local and systemic myotoxicity, provoked a more prolonged increment in plasma CK activity upon intramuscular injection, and induced increments in plasma CK after intravenous injection. The three toxins promoted a similar extent of local myotoxicity, assessed by the loss of CK in injected gastrocnemius. A method for the quantitative assessment of the ability of toxins to induce systemic myotoxicity is proposed, based on the estimation of the ratio between the area under the curve in the plasma CK activity (total myotoxicity) to the loss of CK in injected gastrocnemius (local myotoxicity). The highest ratio corresponded to crotoxin, and the lowest corresponded to Lys49 PLA(2), the former being a systemic myotoxin and the latter a local myotoxin. Neutralization by antivenoms also differed between the toxins: a drastic reduction in plasma CK, with very poor neutralization of local CK loss, was achieved in the case of crotoxin B when antivenom was injected intravenously, whereas no neutralization was achieved in the case of Lys49 PLA(2). When tested in undifferentiated myoblasts in culture, Lys49 PLA(2) induced cytotoxicity, whereas crotoxin and crotoxin B did not, evidencing that the latter are devoid of widespread cytolytic activity. Molecular modeling analysis showed that Lys49 PLA(2) has a conspicuous cationic face, which is likely to interact with diverse membranes. In contrast, crotoxin B, despite its overall basic pI, has a lower density of positively charged residues at this molecular region. It is suggested that Lys49 PLA(2)s homologues interact, through this cationic face, with many different cell types, thus lacking specificity for muscle cells. In contrast, crotoxin B has a more selective interaction with targets in the muscle cell membrane. This selectivity might be the basis for the ability of crotoxin and crotoxin B to induce systemic myotoxicity.     

长期烫吸安钠咖血中安钠咖、肌红蛋白、肌酸激酶同工酶、C反应蛋白含量变化研究

目的:为了查找安钠咖滥用致血中生化变化。方法:应用化学发光、电化学发光免疫分析法,测定吸食安钠咖36例,正常对照14例,外周血液中MYO、CK-MB、CRP含量,对其进行比较分析。结果:吸食安钠咖组CK-MB明显高于正常对照(P<0.05),CRP测定组高于对照组,但无明显差异(P>0.05),MYO两组几乎相近(P>0.05)。结论:长期吸食安钠咖心肌梗死的危险性增加。     

糖尿病高渗状态横纹肌溶解症回顾性分析

目的了解糖尿病高渗状态诱发横纹肌溶解情况。方法回顾了16例（男9例，女7例）糖尿病高渗状态住院病例，其中6例（37．50％）生化指标提示横纹肌溶解。将横纹肌溶解组与非横纹肌溶解组的临床及生化指标进行比较。结果横纹肌溶解组血清肌酸磷酸激酶（CK）及肌红蛋白（Mb）分别是非横纹肌溶解组的30倍与50倍。血清葡萄糖（BG）、钠（Na^＋）水平及有效血浆渗透压明显高于非横纹肌溶解组（P〈0．05）。与之相反，血清钾（K^＋）及磷（P2^-）水平明显低于非横纹肌溶解组（P〈0．05）。两组肾功能衰竭差异无统计学意义（100．00％比60．00％。P=0．0736），但尿素氮（BUN）及肌酐（Cr）水平明显高于非横纹肌溶解组（P〈0．05）。无一例在住院期间被诊断横纹肌溶解。结论横纹肌溶解症在糖尿病高渗状态并非罕见，常被忽略。建议对糖尿病高渗状态患者入院后，常规进行有关肌酶尤其CK、Mb检测，以早期发现横纹肌溶解症，及时治疗。     

急性心肌梗死溶栓后检测肌红蛋白、肌钙蛋白I、肌酸激酶同工酶对冠脉再通的诊断价值

目的探讨血清肌红蛋白(Mb)、肌钙蛋白I(cTnI)和肌酸激酶同工酶(CK-MB)对急性心肌梗死溶栓冠脉再通的早期诊断价值。方法应用酶联免疫分析法测定106例急性心肌梗死患者溶栓治疗后Mb、cTnI、CK-MB浓度的变化,分析急性心肌梗死患者溶栓再通组(73例)和溶栓未通组(33例)上述指标的变化。结果急性心肌梗死溶栓再通组Mb、cTnI和CK-MB达到峰值浓度的时间较未通组明显提前(P<0.05),其中Mb较cTnI、CK-MB峰值出现更早,分别为(5.9±2.5)h、(14.5±3.2)h和(14.8±3.9)h(P<0.01);Mb、cTnI和CK-MB对判断冠脉再通的敏感性、特异性、预测值无显著性差异(P>0.05)。结论血清Mb、cTnI和CK-MB可以较好地预测急性心肌梗死患者溶栓再通,其中Mb较cTnI、CK-MB能更早的判定冠状动脉是否再灌注。