合并室间隔缺损的大动脉转位所致肺动脉高压的可逆性程度及其分子机制

Objective Explore the reversibility and potential molecular mechanisms of pulmonary hypertension in pa-tients with complete transposition of the great arteries (cTGA) combined with ventricular septal defect (VSD) in comparison with those with simple VSD. Methods Twenty-four patients with pulmonary hypertension (mean pulmonary arterial pressure was greater than 30 mmHg) were enrolled in our study, in which 10 patients suffered from cTGA with VSD, and the rest 14 pa-tients suffered from simple VSD. Lung specimens were taken from the right middle lobe of lung before cardiopulmonary bypass. The extent of pulmonary hypertension was then graded according to the Heath-Edwards classification. ELISA was used to exam-ine the expression of eNOS, iNOS, ET-1, ET-AR, ET-BR, MMP-2, MMP-9 and TIMP in all the specimens. Results No statistically significant differences in age, height, weight, the size of VSD, and the pulmonary artery pressure before operation were found between the groups. The level of hemoglobin, aortic and pulmonary arterial oxygen saturation, and the reduction value of pulmonary arterial pressure after surgery were significantly higher in the cTGA patients than that in the simple VSD pa-tients (P < 0.05). All patients had grade 0 - Ⅱ Heath-Edwards changes in their lung biopsy samples. The expression of eNOS and MMP-2 was significantly lower in the TGA group than that in the simple VSD group [eNOS: (280.13 ± 101.92) ng/mg vs. (488.41±249.6) ng/mg, P<0.05; MMP-2:(31.68±15.36)ng/mg vs. (69.28±49.12)ng/mg, P<0.05]. There were no statistically significant differences between the two groups regarding the expression of iNOS, ET-1, ET-AR, ET-BR,MMP-9 or TIMP. Conclusion The imbalance of the NOS/ET system and the MMP/TIMP system involves in the development of pulmonary hypertension in patients with TGA combined with VCD. In patients with cTGA, the high oxygenation state in pul-monary circulation may decrease the expression of MMP2 and eNOS, and may affect the progress of pulmonary hypertension to a certain extent.     

低强度激光照射对大鼠骨髓间充质干细胞生物学性状影响的实验研究

目的 探讨低强度635 nm激光照射对体外培养的大鼠骨髓间充质干细胞(bone marrow derived mesenchymal stem cells,BM-SCs)增殖及分泌功能的影响.方法 体外培养的第2代SD大鼠BMSCs以InGaAsP半导体激光(635 nm,60 mw)不同能量密度(0,0.5,1.0,2.0和5.0 J/cm2)照射,24 h后酶联免疫吸附法(ELISA)测定上清液中血管内皮生长因子(VEGF)及神经生长因子(NGF)含量;BrdU法绘制BMSCs增殖曲线.结果 低强度635 nm半导体激光照射能够促进体外培养的大鼠BMSCs的增殖,最佳能量密度为0.5 J/cm2;大鼠BMSCs能够在体外培养条件下分泌VEGF、NGF;5.0 J/cm2低强度半导体激光照射能够显著促进BMSCs分泌VEGF、NGF.结论 635 nm波长低强度半导体激光照射能够显著促进体外培养的大鼠BMSCs增殖及分泌功能,且与照射剂量有关.     

冠状动脉旁路移植术同期干细胞移植治疗冠心病慢性心衰的中期结果

目的利用冠状动脉旁路移植手术同期经冠状动脉桥血管内移植自体骨髓单个核细胞的方法治疗冠心病陈旧性心肌梗死伴慢性心功能不全患者,评价治疗的安全性和中期临床效果。方法选择需要外科手术治疗的冠心病陈旧心梗伴左室功能不全患者,应用冠状动脉旁路移植手术同期经冠状动脉桥血管内移植自体骨髓单个核细胞的治疗方法。评价干细胞移植后左室功能改变、不良事件、生存时间和中期随访情况。结果全组19例患者接受冠状动脉旁路移植术同期经冠状动脉桥血管内移植干细胞治疗。1例术后第3天因脑栓塞死亡。全组患者治疗后早期无心梗发生,无肝、肾功能衰竭,无新发恶性,12,律失常出现。18例患者平均随访2年全部存活,超声检测左室射血分数上升,心功能和心绞痛症状明显改善并具有统计学意义。结论冠状动脉旁路移植术同期经冠状动脉桥血管内移植自体骨髓单个核细胞治疗冠心病陈旧性心肌梗死的方法是可行的。手术后早、中期随访结果观察,此种治疗是安全的。     

疏肝解郁胶囊联合理疗在焦虑抑郁患者中的应用及对患者应激反应的影响

目的：探讨疏肝解郁胶囊联合理疗在焦虑抑郁患者中的应用及对患者应激反应的影响。方法：将 104 例焦虑抑郁患者应用信封法分为研究组和对照组各 52 例。对照组采取疏肝解郁胶囊治疗，研究组在对照组基础上联合理疗治疗，2 组疗程均为 4 个月。观察比较 2 组应激反应激素水平、焦虑抑郁情绪评分以及临床疗效。结果：研究组临床总有效率（94.2%）高于对照组 （84.6%），差异有统计学意义 （χ2=7.154，P＜0.05）。治疗前，2 组促肾上腺皮质激素 （ATCH）、促肾上腺激素释放激素（CRH）、皮质醇 （CORT）、生长素 （HGH） 水平比较，差异无统计学意义 （P＞0.05）。治疗后，2 组 ACTH、CRH、CORT 水平较治疗前降低，HGH 水平较治疗前升高 （P＜0.05）；且研究组 ACTH、CRH、CORT 水平低于对照组，HGH 水平高于对照组（P＜0.05）。治疗前，2 组汉密尔顿焦虑量表（HAMA-14）评分及汉密尔顿抑郁量表（HAMD-17）评分比较，差异无统计学意义（P＞0.05）。治疗后，2 组 HAMA-14 评分及 HAMD-17 评分较治疗前降低，且研究组 HAMA-14 评分及 HAMD-17 评分低于对照组，差异均有统计学意义（P＜0.05）。结论：疏肝解郁胶囊联合理疗治疗焦虑抑郁患者效果确切，可调解应激反应指标水平及改善患者焦虑抑郁评分。     

发泡餐具，禁了又解让人费解

为老百姓把守产品质量安全关,是政府职能部门的职责。解禁发泡餐具的理由,有必要向公众说清楚     

冠状动脉旁路移植同期桥血管内移植骨髓单个核细胞的可行性☆◆

背景：目前细胞移植治疗缺血性心脏病的大部分临床试验是针对急性心肌梗死患者梗死相关冠状动脉再通后骨髓单个核细胞的移植,结合外科手术同期予以细胞移植治疗陈旧性心肌梗死的报道相对较少。 目的：探讨冠状动脉旁路移植术中骨髓单个核细胞经桥血管进行移植的可行性及安全性。 设计：自身前后对照,病例分析。 对象：2004-11/2005-06阜外心血管病医院收治的冠状动脉旁路移植手术患者10例,既往有陈旧性心肌梗死,需要进行冠状动脉旁路移植,术前左心室射血分数低于40%。 方法：患者进行手术的同时,抽取自体骨髓血,采用Ficoll密度梯度离心法分离骨髓单个核细胞。在桥血管远端吻合口完成后,将骨髓单个核细胞悬液10 mL注射到前降支,其他桥血管经近心端将骨髓单个核细胞悬液10 mL分别注射到回旋支和右冠状动脉内。 主要观察指标：术后通过心脏超声、磁共振评价心功能。 结果：10例患者术后均恢复顺利,术中采集骨髓血45~60 mL,分离骨髓单个核细胞数量平均为4.1×107个,锥虫蓝排斥试验测定细胞活性> 95%。心脏超声检查结果显示,与术前比较,术后1周及1,3个月患者左心室射血分数明显提高;术后心肌酶、肌钙蛋白T未见异常增高,心电图未发现围手术期心肌梗死改变。磁共振扫描结果显示,与术前比较,术后3个月左心室射血分数明显增加(P < 0.01);左室舒张末期直径、左室收缩末期直径均明显缩小(P < 0.05)。手术过程中及术后均未见与骨髓血采集以及细胞经冠状动脉桥血管内移植的相关并发症发生。 结论：作为一种辅助性治疗手段,骨髓单个核细胞通过桥血管进行心肌内移植是安全可行的。     

合并室间隔缺损的大动脉转位所致肺动脉高压的可逆性程度及其分子机制

Objective Explore the reversibility and potential molecular mechanisms of pulmonary hypertension in pa-tients with complete transposition of the great arteries (cTGA) combined with ventricular septal defect (VSD) in comparison with those with simple VSD. Methods Twenty-four patients with pulmonary hypertension (mean pulmonary arterial pressure was greater than 30 mmHg) were enrolled in our study, in which 10 patients suffered from cTGA with VSD, and the rest 14 pa-tients suffered from simple VSD. Lung specimens were taken from the right middle lobe of lung before cardiopulmonary bypass. The extent of pulmonary hypertension was then graded according to the Heath-Edwards classification. ELISA was used to exam-ine the expression of eNOS, iNOS, ET-1, ET-AR, ET-BR, MMP-2, MMP-9 and TIMP in all the specimens. Results No statistically significant differences in age, height, weight, the size of VSD, and the pulmonary artery pressure before operation were found between the groups. The level of hemoglobin, aortic and pulmonary arterial oxygen saturation, and the reduction value of pulmonary arterial pressure after surgery were significantly higher in the cTGA patients than that in the simple VSD pa-tients (P < 0.05). All patients had grade 0 - Ⅱ Heath-Edwards changes in their lung biopsy samples. The expression of eNOS and MMP-2 was significantly lower in the TGA group than that in the simple VSD group [eNOS: (280.13 ± 101.92) ng/mg vs. (488.41±249.6) ng/mg, P<0.05; MMP-2:(31.68±15.36)ng/mg vs. (69.28±49.12)ng/mg, P<0.05]. There were no statistically significant differences between the two groups regarding the expression of iNOS, ET-1, ET-AR, ET-BR,MMP-9 or TIMP. Conclusion The imbalance of the NOS/ET system and the MMP/TIMP system involves in the development of pulmonary hypertension in patients with TGA combined with VCD. In patients with cTGA, the high oxygenation state in pul-monary circulation may decrease the expression of MMP2 and eNOS, and may affect the progress of pulmonary hypertension to a certain extent.     

冠状动脉旁路移植术同期经旁路血管移植自体干细胞治疗缺血性心衰

目的 评价冠状动脉旁路移植手术同期经旁路血管移植自体骨髓干细胞治疗缺血性心衰的可行性和安全性.方法 40例需外科手术治疗的陈旧性心梗伴左室功能不全病人,在冠状动脉旁路移植手术同期经旁路血管移植自体骨髓单个核细胞.结果 全组手术死亡1例.手术早期无心梗发生,无肝、肾功能衰竭,无新发恶性心律失常.结论 冠状动脉旁路移植术同期经旁路血管移植自体骨髓单个核细胞治疗冠心病陈旧心梗,为缺血性心衰病人提供了一个全新的综合治疗选择.