目的   开发一种多功能纳米颗粒输送系统来刺激骨再生和血管形成，用于逆转骨质疏松症。方法   通过制备基于外消旋聚乳酸 Poly（D，L-lactide）即PLA的纳米颗粒来封装淫羊藿苷。随后，通过红细胞膜包被这些纳米颗粒以增强生物相容性。为了提高靶向特异性，进一步合成了由阿仑膦酸盐修饰的聚乙二醇-磷脂酰乙醇胺（PEG-DSPE） 组成的骨靶向聚合物脂质，并将其掺入细胞膜涂层中。结果   多功能纳米颗粒输送系统可通过调节骨髓间充质干细胞 （BMSC）功能，从而增强成骨和血管生成能力。结论   本研究结果表明，多功能纳米颗粒输送系统可以在体外刺激骨形成和血管形成，表明其有成为骨质疏松症先进治疗策略的潜力。

       Objective  To developed a multifunctional nanoparticle system to stimulate bone regeneration and vascularization as a therapeutics strategy for osteopovost．Methods  Poly（D，L-lactide）（PLA）-based nanoparticles were fabricated to encapsulate the icariin，which is renowned for its osteogenic potential．These nanoparticles were then coated with  red blood cell membranes to enhance biocompatibility．To further improve targeting specificity，a bone-targeted polymer-lipid consisting of alendronate-modified PEG-DSPE was synthesized and incorporated into the cell membrane coating．Results  The delivery system was designed to modulate the function of bone marrow mesenchymal stem cells，thereby enhancing both osteogenesis and angiogenesis．Conclusions  Our findings demonstrated that the therapeutic system could enhance bone formation and vascularization in vitro，indicating its potential as an advanced treatment strategy for osteoporosis．

目的 探讨食管胃静脉曲张精准断流术与改良“三明治”法治疗食管胃静脉曲张的临床疗效。方法 选取共50例食管胃底静脉曲张患者,按随机数字法分为精准治疗组和对照组,精准治疗组(n=25)行内镜下食管胃静脉曲张精准断流术,对照组(n=25)接受改良“三明治”法内镜治疗。分析对比两组的止血成功率、再出血率、治疗显效率、并发症发生率、聚桂醇和组织胶用量、治疗时间及住院天数等指标。结果 治疗后随访3个月,术后3天内止血率两组均为100％。再出血率精准治疗组为4%,对照组为32%,差异有统计学意义(P=0.010)。静脉曲张治疗显效率精准治疗组为84%,对照组出血率为52%,差异有统计学意义(P=0.015)。并发症发生率在两组间差异无统计学意义(P>0.05)。聚桂醇和组织胶平均用量在两组间差异无统计学意义(P>0.05)。精准治疗组平均治疗时间为(32.60±6.44)min,对照组为(40.60±7.26)min,差异有统计学意义(P<0.0001);精准治疗组平均住院天数为(8.12±1.24)d,对照组为(9.12±1.39)d,差异有统计学意义(P=0.010)。结论 内镜下精准断流术治疗食管胃静脉曲张再出血率低、效果好、安全性高。

Objective To investigate the clinical efficacy of endoscopic selective varices devascularization and the modified Sandwich method on the treatment of esophagogastric varices. Methods 50 patients with esophagogastric varices were divided into therapy (endoscopic selective varices devascularization)group (n=25) and control group (n=25) by random number table method. The therapy group (n=25) received the treatment of endoscopic selective varices devascularization. The control group (n=25) was treated with modified Sandwich method injection. The success rate of hemostasis, rate of recurrent bleeding, rate of varices disappearance, complication rate, dosage of lauromacrogol and tissue adhesive, time of therapy and hospitalization days were compared and analyzed between the two groups. Results During the 3-month followup, the success rates of hemostasis were 100% in both groups 3 days after the treatments. The rates of recurrent bleeding in therapy group and control group were 4% and 32% respectively, with statistically significant difference (P=0.010). The rates of varices disappearance in therapy group and control group were 84%and 52% respectively, the difference (P=0.015) was statistically significant. There was no statistically significant difference in complication rates between the two groups(P>0.05). There was also no statistically significant difference in the average dosage of lauromacrogol and tissue adhesive between the two groups(P>0.05). The average time of therapy in therapy group and control group were(32.60±6.44)minutes and(40.60±7.26)minutes respectively, with statistically significant difference between the two groups(P=0.000). The average hospitalization days in therapy group and control group were(8.12±1.24)days and(9.12±1.39)days respectively, which is statistically significant difference between the two groups(P=0.010). Conclusion Endoscopic selective varices devascularization has the obvious advantage of a significant efficacy, low recurrence rate and high safety.

目的 探讨激光心肌血运重建(Transmyocardial Laser revascularization, TMLR)辅助冠状动脉旁路移植术治疗严重冠心病的临床疗效及 11年随访结果。方法 25例严重冠心病患者行不停跳冠状动脉旁路移植术(off-pump coronary artery bypass, OPCAB)并辅以激光心肌血运重建术(TMLR组),回顾性总结了其术前、术中、术后及 11年随访资料,并与同期进行的 95例单纯不停跳冠状动脉旁路移植术(OPCAB组)病人资料进行比较分析。结果 TMLR组在平均远端吻合口数比 OPCAB组少,而手术时间、术后硝普钠用量比OPCAB组多,其他如术后机械通气时间、ICU停留时间、术后住院天数和术后常见并发症,2组之间均无差异;平均 11年随访资料中,胸闷痛、心衰、新出现 ST-T改变发生率、再发急性心梗、再次 PCI处理、LVEF和血管桥闭塞率,2组间无明显区别;死亡率二者之间也没有区别。结论 TMLR术辅助冠状动脉旁路移植术虽然手术时间比较长,血管活性药物应用较多,但术后康复和 11年随访资料显示与单纯 OPCAB术有相似的结果,说明 TMLR术作为冠状动脉旁路移植术的补充,对那些冠脉血管细小且钙化狭窄严重而不适合冠状动脉旁路移植术的冠心病患者是获益的。

Objective To explore and analyze the clinical effect of off-pump coronary artery bypass (OPCAB) combined transmyocardial laser revascularization(TMLR) of severe coronary artery disease and 11 years follow-up. Methods 25 cases with sever coronary artery disease were treated through OPCAB and TMLR, and the clinical data and 11 years follow-up data were summarized and analyzed retrospectively, compared with the data of the patients treated by only OPCAB. Results There were less mean bypass graft numbers in TMLR group than in OPCAB group. Operation time and the amount of sodium nitroprusside in TMLR group were more than that in OPCAB group. But intubation time, ICU stay time, postoperative stay time and postoperative common complications were not different between two groups. 11 years postoperative follow-up results indicated that chest pain, heart disfunction, ST-T alteration, AMI, PCI treatment again, LVEF and bypass graft occlusion rate were not obviously between two groups. Conclusion TMLR combined OPCAB may result in good outcome and improve long term survival.

目的 分析与比较不同血运重建策略对急性心肌梗死合并多支血管病变患者的疗效,以探讨其临床价值。方法 选取本院在2012年8月—2015年8月期间收治的急性心肌梗死合并多支血管病变患者,对每个患者均成功行PCI后,按随机数字表法分为实验组与对照组,实验组于发病后7～10天行预防性急诊PCI,并对非梗死相关血管病变进行干预;对照组则根据患者的缺血情况对非梗死相关血管病变行急诊PCI。随访2年,并记录2组患者主要心脏不良事件、其它心血管事件以及再次急诊PCI情况。结果 共有450例患者完成2年的随访,实验组患者有226例,对照组患者有224例。2组患者的全因病死率(χ²=7.040,P=0.008)、心脏不良事件(P均>0.05)以及心力衰竭发生率(χ²=1. 527,P=0.217)均无统计学差异。与对照组相比,实验组再发心绞痛(χ²=21.092,P<0.001)、心因性再住院(χ²=22.893,P<0.001)和再次支架治疗(χ²=17.835,P<0.001)的发生率均明显较低,而其相关血管血运重建率较高。且实验组随访2年时,β受体阻滞剂(χ²=7.040,P=0.008)和硝酸酯类药物(χ²=63.889,P<0.001)服用率均明显较高。结论 急性心肌梗死合并多支血管病变患者在成功行急诊干预梗死相关血管后,且预防性干预非梗死相关血管,可使再发心绞痛、再次支架治疗以及心因性再住院的发生率显著降低。

Objective By analyzing and comparing the effects of different revascularization strategies on patients with acute myocardial infarction complicated with multi-vessel disease, to explore its clinical value.Methods Selecting the patients with acute myocardial infarction complicated with multi-vessel disease from August, 2012 to August, 2015 in our hospital (Zhaoqing No.2 People's Hospital), after each patient was successfully treated with PCI, divided them into experimental group and control group by random number table method, the experimental groups were treated with preventive emergency PCI after the onset 7-10 days, and the intervention of non-infarct-related vascular diseases were done;the control groups were treated with emergency PCI for the non-infarct-related vascular diseases according to the patient's lack of blood. Visiting them randomly for 2 years, the main cardiac adverse events, other cardiovascular events and one more emergency PCI situation in the two groups were recorded.Results A total of 450 patients completed two years of follow-up, with 226 patients in the experimental group and 224 patients in the control group. All-cause mortality (χ2=7.040,P=0.008), cardiac adverse events (P> 0.05)and incidence of heart failure (χ2=1. 527,P=0.217) were no statistically significant difference between the two groups. Compared with the control group, the incidence of angina pectoris (χ2=21.092,P<0.001), cardiologic rehospitalization (χ2=22.893,P<0.001)and one more stent treatment (χ2=17.835,P<0.001) of the experimental group was significantly lower, but the revascularization rate was higher of their related blood vessels. And when the experimental group was followed up for 2 years, the taking rate of β-blockers (χ2=7.040,P=0.008) and nitrates (χ2=63.889,P<0.001) was significantly higher.Conclusion After the patients with acute myocardial infarction complicated with multi-vessel disease were successfully treated with emergency PCI to intervene the infarct-related blood vessels, and at the same time the intervention of the non-infarct-related blood vessels were done, the recurrence of angina pectoris, stent treatment and cardiopulmonary rehospitalization was significantly reduced.

目的 通过超声造影成像技术( CEUS)观察颈动脉斑块内新生血管的情况,探讨颈动脉斑块的厚度与新生血管的关系。方法 选择颈动脉粥样硬化患者40例,经常规超声确诊存在斑块,共64个,应用CEUS成像技术检测斑块内新生血管情况。结果 不同厚度的颈动脉斑块的增强强度与斑块厚度成正相关(r=0.897 6,P=0.000 0)。结论 超声造影成像技术可以在常规超声的基础上通过检测斑块内的新生血管,进而判断斑块的性质,提供更多有用的信息进一步评估颈动脉斑块内新生血管增强强度与斑块厚度存在线性正相关性。

Objective To evaluate the neovascularization in carotid plaques by gray-scale harmonic contrast echocardiography (CEUS), and to investigate the relationship between the thickness of carotid artery plaque and the neovascularization.Methods 40 patients with carotid atherosclerosis were selected, and 64 plaques were diagnosed by regular ultrasound. The neovascularization in plaques was detected by CEUS imaging technique.Results The enhanced strength of carotid plaques with different thickness was positively correlated with plaque thickness (r=0.8976,P=0.0000).Conclusion Ultrasound contrast imaging can detect angiogenesis within the plaque based on conventional ultrasound, and then determine the nature of the plaque. More useful information is provided to further evaluate the linear positive correlation between the intensity of neovascularization and the thickness of plaque in carotid plaque.

目的 研究分析牙髓血管再生术治疗年轻恒牙的临床应用疗效。方法 选取本院2012年1月—2013年12月间年轻恒牙牙髓血管再生治疗的60例患者为研究对象,按随机数方式分成两组,每组30例。对照组患者应用根尖诱导成形手术治疗,观察组患者应用牙髓血管再生术进行治疗,统计比较两组患者术后VAS评分及临床疗效。结果 观察组患者治疗总有效率为93.3%,相较于对照组患者的90.0%差异无统计学意义(P＞0.05);治疗前,两组患者VAS疼痛等级评分差异无统计学意义(P＞0.05);治疗后,患者VAS评分降低明显,且观察组显著低于对照组,差异有统计学意义(P＜0.05)。结论 临床中应用内封氢氧化钙糊剂血管再生术在年轻恒牙治疗中具有较好的应用效果,提高有效率,减轻疼痛,值得临床中应用与推广。