Effects of Electro-acupuncture Preconditioning on Focal Cere bral Blood Flow in Artery and Vein of Rats with Middle Cere bral Artery Occlusion

Objective:To investigate the effects of electro-acupuncture preconditioning on focal cerebral blood flow(CBF)in artery and vein of rats with middle cerebral artery occlusion(MCAO),and to provide experimental evidences for primary prevention of ischemic stroke.Method:Eighteen male Sprague-Dawley rats(two months old)were divided into 3 groups:electro-acupuncture preconditioning group(EA group),ischemia group(Is group)and Dazhui and Baihui sham group(six rats per group).The rats in the EA group were given electro-acupuncture preconditioning at Dazhui and Baihui with 2/15 density wave current for 30 minutes per day,5 days consecutively.After preconditioning,enhanced laser speckle contrast analysis was implemented to get false color images before making middle cerebral ischemia occlusion model.Then getting false color images two hours during ischemia by laser speckle contrast analysis again.Result:④Relative CBF in focal cortical artery:There were significant differences at every time point in EA group and Is group(P<0.01,P<0.05)comparing with that before occlusion respectively.Compared with that before ischemia,there was significant difference at 120 min after ischemia in sham group(P<0.05);compared with that at 30 min after occlusion,there was significant difference at every time point in EA group from the time point 60 min after occlusion;there was significant difference at every time point in EA group and Is group(P<0.05)comparing with sham group;Compared with sham group,there was significant difference at 30min and 60 min after ischemia in EA group(P<0.05).④Relative CBF in focal cortical vein:There was significant difference at every time point in sham group comparing with that before occlusion(P<0.05);compared with that before occlusion,there was significant difference from 45 min after occlusion in EA group(P<0.05);compared with that before occlusion,there was significant difference from 105 min after occlusion in sham group(P<0.05);there was significant difference at 120 min after occlusion comparing with 60 min after occlusion in EA group;compared with sham group,there was significant difference at every time point in EA group and Is group(except 30 min after occlusion)(P<0.05),respectively;compared with Is group,there was significant difference at 30,45,60 min after occlusion in EA group(P<0.05).④The infarct brain volume detected 24 h after reperfusion in EA group was significantly smaller comparing with that in Is group(P<0.05).Conclusion:Electro-acupuncture preconditioning could increase CBF velocity in artery and vein of focal cortex in rats with MCAO,which also had time-dependence.Additionally,electro-acupuncture preconditioning could decrease the infarct volume detected 24h after reperfusion,which possibly was correlated with the blood supply in ischemic penumbra.

Therapeutic effects of different durations of acupuncture on rats with middle cerebral artery occlusion

Acupuncture is regarded as an effective therapy for cerebral ischemia. Different acupuncture ma- nipulations and durations may result in different therapeutic effects. In the present study, the Neig uan （PC6） acupoint of rats with occluded middle cerebral arteries was needled at a fixed frequency （3 Hz） with different durations, i.e., 5, 60 and 180 seconds under a twisting-rotating acupuncture method. Results showed that different durations of acupuncture had different therapeutic effects, with 60 seconds yielding a better therapeutic effect than the other two groups. This duration of treatment demonstrated rapid cerebral blood flow, encouraging recovery of neurological function, and small cerebral infarct volume. Experimental findings indicated that under 3 Hz frequency, the treatment of needling Neiguan for 60 seconds is effective for ischemic stroke.

Short-term effects of intravitreal triamcinolone acetonide injection on ocular blood flow evaluated with color Doppler ultrasonography

AIM:To evaluate the changes in ocular blood flow with color Doppler ultrasonography(CDU) after intravitreal triamcinolone acetonide(IVTA) injection.METHODS:A total of 46 patients who underwent IVTA(4 mg/0.1 mL) injection for diabetic macular edema(DME)(n =22), central retinal vein occlusion(CRVO)(n =12) and choroidal neovascular membrane(CNVM)(n =12) were included in the study. Peak systolic velocity(PSV), end diastolic velocity(EDV) and resistivity index(RI) were measured from the ophthalmic artery(OA), the central retinal artery(CRA) and the posterior ciliary artery(PCA)of each patient with CDU before, at the end of the first week and at the end of the first month following IVTA injection.RESULTS:In the DME group, PSV of OA at the first of the first month(mean ±SD)(37.48 ±10.87 cm/s) increased compared to pre-injection value(31.39 ±10.84 cm/s)(P =0.048). There was a statistically significant decrease(P =0.049) in PSV of CRA at the end of the first month(7.97±2.67 cm/s) compared to the pre-injection(9.47±3.37 cm/s).There was not any statistically significant difference onthe other parameters in the DME group. Also, there was not any statistically significant difference on the ocular blood flow values in the CRVO and CNVM groups.CONCLUSION:We observed that 4 mg/0.1 mL IVTA increased PSV of OA and decreased PSV of CRA in DME patients and did not have any effect on ocular blood flow values of CRVO and CNVM patients.

Electroacupuncture induces acute changes in cerebral cortical mi RNA profile, improves cerebral blood flow and alleviates neurological deficits in a rat model of stroke

Electroacupuncture has been shown to improve cerebral blood flow in animal models of stroke. However, it is unclear whether electroacupuncture alters mi RNA expression in the cortex. In this study, we examined changes in the cerebral cortical mi RNA profile, cerebral blood flow and neurological function induced by electroacupuncture in a rat model of stroke. Electroacupuncture was performed at Renzhong（GV26） and Neiguan（PC6）, with a frequency of 2 Hz, continuous wave, current intensity of 3.0 m A, and stimulation time of 1 minute. Electroacupuncture increased cerebral blood flow and alleviated neurological impairment in the rats. mi RNA microarray profiling revealed that the vascular endothelial growth factor signaling pathway, which links cell proliferation with stroke, was most significantly affected by electroacupuncture. Electroacupuncture induced changes in expression of rno-mi R-206-3p, rno-mi R-3473, rno-mi R-6216 and rno-mi R-494-3p, and these changes were confirmed by quantitative real-time polymerase chain reaction. Our findings suggest that changes in cell proliferation-associated mi RNA expression induced by electroacupuncture might be associated with the improved cerebral blood supply and functional recovery following stroke.

Altered expression in liver cancer with various hepatic blood flow occlusions: A pilot RNA sequencing study

Background and aims:Hepatocellular carcinoma is one of the most common cancers worldwide.Previous studies have reported he influence of various hepatic blood flow occlusions on tumor behavior,which is mainly mediated by liver ischemia-reperfusion.Although some genes and pathways have been determined,the whole transcriptome after various hepatic blood flow occlusions is lacking.Methods:We systematically explored transcriptome changes after various hepatic blood flow occlusions,including sham operation(SO;n=10),occlusion of the portal triad(OPT;n=10),and occlusion of the portal vein(OPV;n=10),by RNA-sequencing.Results:HE sections and TUNEL assays showed different liver injury among groups.We identified the top altered genes and pathways.Compared with the SO group,96 genes were altered in OPV,with 81 upregulated and 15 downregulated genes.The top 5 upregulated genes were Pdk4,Serpina12,Depp1,Igfbp1,and Mup22.The top 5 downregulated genes were Sprr1a,Serpinb2,Tnc,Cdkn3,and Cenpu.Compared with the SO group,there were 20 differentially expressed genes in OPT,with 18 upregulated and 2 downregulated genes.The top 5 upregulated genes wereC7,Zbtb16,Gabrp,Pdk4,and Mmrn1.The top 2 downregulated genes were Krt20 and Sis.Compared with the OPV group,72 differentially expressed genes were in OPT,with 39 upregulated and 33 downregulated genes.The top 5 upregulated genes wereHspa1b,Hbb-bs,Phf19,Ddias,and Rad54b.The top 5 downregulated genes were Cish,Socs2,Slc25a30,Rgs3,and Hsd3b5.Conclusion:Various surgical methods have an obvious influence on the transcriptome of tumors.

电针结合经颅交流电刺激对脑缺血大鼠神经炎症和凋亡相关基因表达的影响

目的:观察电针(electroacupuncture,EA)结合经颅交流电刺激(transcranial alternating current stimulation,tACS)对大脑中动脉闭塞(middle cerebral artery occlusion,MCAO)模型大鼠神经功能、脑血流、炎症-细胞凋亡基因表达的影响,探讨脑缺血再灌注后脑功能康复的神经调控机制。方法:将40只SD大鼠随机分为假手术组(S组)、模型组(M组)、电针组(EA组)、经颅交流电刺激组(T组)及电针结合经颅交流电组(EA+T组),每组8只。缺血再灌注后2h,EA组选取双侧曲池、足三里进行电针干预;T组选取右侧M1区(motor cortex M1,运动皮质M1区)进行tACS干预;EA+T组选取电针结合tACS干预;S组与M组均进行气麻30min/次,连续7天。记录大鼠造模前(B)—造模后7天(D7)的神经缺损评分;B—D7右侧大脑中动脉供血区的血流值,记录血流量;D7时取脑RT-PCR方法检测缺血侧的炎症-细胞凋亡基因的表达。结果:神经缺损评分(neurological deficit scores,NDS):2h、D1时,M组、EA组、T组、EA+T组与S组相比显著增加(P<0.05);D3、D5、D7时,S组与其他各组相比显著降低、M组与其他各组相比显著增加(P<0.05)。EA组、T组、EA+T组各时间均有显著性差异(P<0.05);M组2h、D1、D3、D5、D7与B相比显著上升;D1、D3、D5、D7与2h相比显著下降(P<0.05)。血流量:EA+T组与S组均在2h时下降、D1时上升、D3时下降;EA组则从D3时上升;而M组在D1、D3、D5时与其他各相比均显著下降(P<0.05)。RT-PCR:运动皮质ΔCt法分析(参照基因):EA+T组的天冬氨酸蛋白水解酶12(cysteinyl aspartate specific proteinase12,Caspase 12)表达显著低于T组(P<0.05);EA组、EA+T组的细胞因子白介素-1β(interleukin-1β,IL-1β)、核苷酸结合寡聚化结构域样受体1(nucleotide-binding oligomerization domain-like receptor pyrin domain containing 1,NLRP1a)均显著低于S组(P<0.05)。缺血区2-ΔΔCt分析:M组的内质网应激相关蛋白激活转录因子4(activating transcription factor 4,ATF4)表达显著高于其他各组(P<0.05);M组的B淋巴细胞瘤-2基因(B-cell lymphoma,l-2)显著高于S组、EA组、EA+T组(P<0.01);M组的Bcl-2相关X蛋白(Bcl-2 associated X potein,Bax)、Caspase 12、细胞癌基因fos(cellular oncogene fos,fos)均显著高于S组(P<0.05)。结论:电针结合tACS对缺血性脑卒中的干预可能通过调控ATF4、Bcl-2、Bax、Caspase 12、C-fos的表达发挥调节作用,联合应用在减轻炎症反应、抑制细胞凋亡方面,可能优于单独电针或tACS干预,可为缺血性脑卒中的治疗提供新的策略。

颞浅动脉-大脑中动脉分支吻合术治疗闭塞性脑血管疾病的临床效果

目的探讨颞浅动脉-大脑中动脉分支吻合术(STA-MCA)治疗闭塞性脑血管疾病的临床效果。方法纳入我院收治的74例闭塞性脑血管疾病患者,根据随机数字表法分为观察组与对照组,每组37例。对照组患者采用保守治疗,观察组患者采用STA-MCA治疗。术后随访3个月,观察2组治疗前和治疗后第3天、1个月、3个月的脑血流指标(大脑前动脉脑血流量、达峰时间),记录2组患者治疗前和治疗后第3天、1个月改良Rankin评分,统计治疗后血管重建情况和并发症发生情况。结果2组患者治疗后1个月、3个月的大脑前动脉脑血流量均提高,达峰时间均缩短,且观察组患者大脑前动脉脑血流量高于对照组,达峰时间短于对照组,差异有统计学意义(P<0.05)。与治疗前比较,2组患者治疗后1个月改良Rankin评分均降低,且观察组低于对照组,差异有统计学意义(P<0.05)。观察组患者治疗后1个月血管重建为0级、1级的比例低于对照组,2级、3级比例高于对照组,差异均有统计学意义(P<0.05);观察组患者治疗后3个月血管重建为0级、1级比例低于对照组,3级比例高于对照组,差异均有统计学意义(P<0.05)。2组患者治疗后并发症总发生率比较,差异无统计学意义(P>0.05)。结论STA-MCA治疗闭塞性脑血管疾病的临床效果良好,有利于改善脑血流指标,促进神经功能恢复和血管重建,安全可靠。

多延迟动脉自旋标记技术在动脉重度狭窄或闭塞患者脑灌注评估中的价值

目的探讨多延迟动脉自旋标记(muti-delayed arterial spin labeling,mASL)技术评估单侧颈内动脉或大脑中动脉重度狭窄、闭塞患者脑灌注改变的价值。材料与方法前瞻性纳入我院神经内科临床诊断为单侧颈内动脉或大脑中动脉重度狭窄、闭塞的34例患者单延迟准连续式动脉自旋标记(pseudo continuous arterial spin labeling,p CASL)及mASL灌注图像进行动脉狭窄侧异常灌注区域评估,应用Kappa一致性检验评估两位观察者判断结果的一致性。分别在异常灌注区域手动勾画感兴趣区并获得灌注参数值,包括由pCASL灌注图像获得狭窄侧脑血流量(cerebral blood flow,CBF2020ms),mASL灌注图像获取狭窄侧校正后脑血流量(corrected cerebral blood flow,cCBF)、动脉到达时间(arterial transit time,ATT)、动脉脑血容量(artery cerebral blood volume,aCBV)及对侧动脉到达时间(relative arterial transit time,rATT)。利用配对样本t检验比较CBF2020ms及cCBF差异,独立样本t检验比较患者动脉狭窄侧ATT及r ATT差异。结果根据pCASL及mASL的结果显示,在34例患者中,10例灌注表现一致(8例均为低灌注,2例均为低灌注伴局部高信号),24例灌注表现不完全一致(其中3例p CASL表现为正常灌注,mASL表现为低灌注;21例pCASL表现为低灌注伴局部高信号,mASL表现为低灌注)。两位观察者间具有高度的一致性(Kappa系数=0.788,P<0.001)。mASL示动脉狭窄侧ATT值显著高于对侧(P<0.001)。pCASL及mASL均表现为低灌注的患者中,CBF2020ms值低于cCBF值(P=0.173)。pCASL及mASL均表现低灌注伴局部高信号的患者中,ATT延长,aCBV增加。pCASL表现为低灌注伴局部高信号且m ASL表现为低灌注的患者中,CBF2020ms显著高于cCBF(P<0.001)。pCASL表现为正常灌注且mASL表现为低灌注的患者中,ATT延长但a CBV保持正常。结论通过多延迟动脉自旋标记技术获得的多参数cCBF、ATT及aCBV能够更敏感、准确地评估单侧颈内动脉或大脑中动脉重度狭窄、闭塞患者脑组织灌注的变化,为临床诊治提供指导性意见。

阻塞性睡眠呼吸暂停低通气综合征干预对合并视网膜分支静脉阻塞的疗效观察

目的探讨阻塞性睡眠呼吸暂停低通气综合征(OSAHS)干预对合并视网膜分支静脉阻塞(BRVO)疗效的影响。方法选取2020年6月至2021年12月收治的202例BRVO合并OSAHS,采用随机数字表法分为观察组101例和对照组101例,对照组给予BRVO规范治疗,观察组给予BRVO规范治疗与生活方式干预(饮食指导及体位疗法),统计比较2组入组时及入组后1个月、6个月、1年、1.5年夜间平均动脉血氧饱和度(MSaO_(2))、最低动脉血氧饱和度(LSaO_(2))、氧减指数(ODI)及最佳矫正视力、黄斑中心凹视网膜厚度(CRT)和视网膜中央动脉(CRA)舒张末期血流速度(EDV)、收缩期峰值流速(PSV),以及入组后1.5年内2组并发症累计发生率和累计实施手术率。结果观察组并发症累计发生率(13.54%)、累计实施手术率(8.33%)较对照组(26.97%、19.10%)低(P<0.05)。入组后1个月、6个月、1年、1.5年观察组夜间MSaO_(2)、LSaO_(2)及CRA的PSV、EDV均高于对照组,夜间ODI、最佳矫正视力、CRT均低于对照组(P<0.05,P<0.01)。结论在BRVO治疗的同时给予OSAHS干预有利于促进BRVO合并OSAHS病情恢复。

不同肝血流阻断方式在腹腔镜左半肝切除术肝癌患者中的应用

目的探讨不同肝血流阻断方式对腹腔镜左半肝切除术肝癌患者中的应用效果。方法回顾性选取75例接受腹腔镜左半肝切除术治疗治疗的肝癌患者,根据不同肝血流阻断方式分为A组、B组与C组,各25例。A组实施Pringle法,B组实施左半肝鞘内解剖血流阻断法,C组实施左半肝鞘内解剖血流阻断+左肝静脉阻断法,3组术后均随访3个月。比较3组围手术期相关指标,术前和术后3 d肝功能、免疫功能、血清细胞间黏附分子-1(ICAM-1)、巨噬细胞移动抑制因子(MIF)、C反应蛋白(CRP)、白细胞介素(IL)-6、IL-8水平,术前和术后3个月后生命质量及随访期间并发症发生情况。结果C组术中出血量低于A组、B组,B组低于A组(P<0.05);C组肛门排气时间、下床活动时间、住院时间短于A组、B组,B组短于A组(P<0.05)。与术前比较,3组术后3 d血清总胆红素(TBIL)、天冬氨酸氨基转移酶(AST)、碱性磷酸酶(ALP)、ICAM-1、CRP、IL-6、IL-8水平升高,C组低于A组、B组,B组低于A组(P<0.05);血清前白蛋白(PA)水平及外周血CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+)、NK细胞水平降低,C组高于A组、B组,B组高于A组(P<0.05);血清MIF水平降低,C组低于A组、B组,B组低于A组(P<0.05)。与术前比较,3组术后3个月的症状/不良作用、社会功能、躯体功能、心理功能评分升高,C组高于A组、B组,B组高于A组(P<0.05)。C组随访期间并发症总发生率低于A组、B组(P<0.05)。结论与Pringle法和左半肝鞘内解剖血流阻断法相比,左半肝鞘内解剖血流阻断法+左肝静脉阻断法可有效控制腹腔镜左半肝切除术肝癌患者术中出血,有效调节患者血清ICAM-1、MIF、CRP、IL-6、IL-8水平,减轻炎症反应,改善患者肝功能和免疫功能,促进患者术后恢复,缩短住院时间,提高生命质量,具有较好的安全性。

增强型体外反搏联合药物治疗视网膜中央动脉阻塞的疗效

目的探讨增强型体外反搏(EECP)联合药物治疗视网膜中央动脉阻塞(CRAO)的疗效。方法选择2020年5月—2021年5月我院诊治的视网膜中央动脉阻塞患者共48例(48眼)作为观察对象,根据治疗方法分为观察组22例(22眼)和对照组26例(26眼),另选取我院同期体检的健康人群20例(20眼)作为阴性对照组。观察组进行4个疗程的EECP联合药物治疗;对照组予单纯药物治疗;阴性对照组予单纯4个疗程EECP治疗。根据治疗前后患者视力、黄斑区血流密度、颈内动脉舒张期末血流速度(EDV)、收缩期峰值血流速度(PSV)及阻力指数(RI)等指标变化,评价及比较疗效。结果观察组总有效率高于对照组(χ^(2)=7.968,P<0.05)。观察组视力治疗后较治疗前显著提高,差异有统计学意义(P<0.05),对照组视力治疗后无明显提高,差异无统计学意义(P>0.05)。病程越短,EECP联合药物治疗效果越好,两者呈高度负相关(r=-0.837,P<0.05)。阴性对照组治疗后颈内动脉各项血流动力学指标较治疗前明显增加,治疗后RI较治疗前明显减小,差异有统计学意义(P<0.05);治疗后黄斑区血流密度各项指标较治疗前明显增加,差异有统计学意义(P<0.05)。观察组治疗后EDV与PSV较治疗前明显增加,治疗后RI较治疗前明显减小,差异有统计学意义(P<0.05)。对照组治疗前后EDV、PSV及RI均无明显改善,差异无统计学意义(P>0.05)。观察组治疗后黄斑区SCP与DCP血流密度较治疗前明显增加,差异均有统计学意义(P<0.05)。对照组治疗前后黄斑区SCP与DCP血流密度无明显变化,差异无统计学意义(P>0.05)。结论EECP联合药物治疗视网膜中央动脉阻塞,可显著提高CRAO患者的临床疗效,可在临床推广应用。

单侧颈内动脉闭塞患者脑灌注与症状、闭塞时期及闭塞位置的关系

目的 评估单侧颈内动脉闭塞(ICAO)患者症状与脑灌注关系、闭塞时期及位置对脑灌注的影响。方法 纳入2021年9月~2023年3月在西安交通大学第二附属医院神经内科就诊的符合纳入排除标准的16例ICAO患者,通过Dr Brain's软件动脉自旋标记模块计算区域脑血流量(CBF)。比较症状性及无症状ICAO、急性及慢性ICAO、起始部及颅内段闭塞患者全脑、双侧大脑中动脉供血区、大脑前动脉供血区、ASPECTS区域(尾状核、豆状核、岛带、内囊、M1、M2、M3、M4、M5、M6)、脑叶(额叶、顶叶、颞叶、岛叶)的区域脑血流量在标记后延迟时间(PLD)为1.5 s和2.5 s的差异。结果 症状性及无症状、急性及慢性、起始部及颅内段ICAO患者全脑CBF、非闭塞侧半球各区域CBF在PLD 1.5 s及PLD 2.5 s的差异均无统计学意义(P>0.05)。起始部和颅内段ICAO患者闭塞侧半球区域CBF在PLD 1.5 s及PLD 2.5 s的差异均无统计学意义(P>0.05)。在PLD 1.5 s时,症状性ICAO患者闭塞侧M5区域CBF较无症状者明显降低,闭塞侧内囊CBF较无症状者升高(P<0.05);在PLD 2.5 s时,症状性及无症状ICAO患者各区域CBF的差异均无统计学意义(P>0.05)。在PLD 1.5 s时,急性ICAO患者闭塞侧大脑中动脉、M1、M5及额叶区域CBF较慢性ICAO者降低(P<0.05);在PLD 2.5 s时,急性ICAO患者在闭塞侧大脑中动脉、M1、M5、M6及额叶的区域CBF较慢性ICAO者降低(P<0.05)。结论 急性ICAO较慢性ICAO患者闭塞侧大脑中动脉供血区和部分ASPECTS皮质区域脑灌注受损更加严重,症状性ICAO与闭塞侧ASPECT部分区域灌注进一步受损有关,颈内动脉不同闭塞位置的脑灌注无差异。

Hepatic blood inflow occlusion with/without hemihepatic artery control versus the Pringle maneuver in resection of hepatocellular carcinoma： a retrospective comparative analysis

Background The Pringle maneuver, which has been the standard for hepatic resection surgery for a long time, has the major flaw of ischemic damage in the liver. The aim of this research was to evaluate hepatic blood inflow occlusion with/without hemihepatic artery control vs. the Pringle maneuver in hepatocellular carcinoma （HCC） resection. Methods Two hundred and eighty-one cases of resection of HCC with hepatic blood inflow occlusion （with/without hemihepatic artery control） and the Pringle maneuver from January 2006 to December 2008 in our hospital were analyzed and compared retrospectively; among them 107 were in group I （Pringle maneuver）, 98 in group II （hepatic blood inflow occlusion）, and 76 in group III （hepatic blood inflow occlusion without hemihepatic artery control）. The operation time, intraoperative blood loss, postoperative liver function and complications were used as the endpoints for evaluation. Results The operative duration and intraoperative blood loss of three groups showed no significant difference; alanine aminotransferase, total bilirubin and incidence of postoperative complications were significantly lower in groups II and Ill postoperation than those in group I. Conclusion Hepatic blood inflow occlusion without hemihepatic artery control is safe, convenient and feasible for resection of HCC, especially for cases involving underlying diseases such as cirrhosis.

CHANGES IN THE ENDOCOCHLEAR POTENTIAL AND COCHLEAR BLOOD FLOW INDUCED BY ATP INFUSION AND ARTERIAL OCCLUSION

To assess the relationship between cochlear blood flow (CBF) and auditory function, a procedure of intravital microscopy for observations of the lateral wall vessels of the cochlea coupled with the simultaneous measurement of the endocochlear potential (EP) was established in guinea pigs with gradual ischemia of the cochlea. It was found that occlusions of both common carotid arteries and one of the vertebral arteries produced a minor reduction in CBF with no significant alteration in the EP. When intravenous infusion of ATP induced sharp and severe decreases in CBF, the EP varied only slightly from the baseline in some animals while there were no alteration in others. Furthermore, ATP infusions combined with arterial occlusions caused even more severe declines in CBF and a moderate decrease in the EP. The results indicate that not only does the CBF satisfy the basic needs of the processes of cochlear function, but also has a regulatory mechanism to ensure the normal function of the cochlea in the ischemia condition. It was also found that the changes in the stria vascularis vessels induced by decreases in blood pressure (BP) and heart rates were more severe than those of the spiral ligament vessels. This phenomenon indicated that the stria vascularis vessels were more sensitive to decreases of BP and heart rates.

咬合重建固定义齿修复术对牙周病伴牙列缺损患者颞下颌功能、脑血流速度及龈沟液IL-23、PGE_(2)的影响

目的 探讨咬合重建固定义齿修复术对牙周病(PD)伴牙列缺损患者颞下颌功能、脑血流速度及龈沟液白介素23(IL-23)、前列腺素E_(2)(PGE_(2))的影响。方法 选取2016年7月至2019年8月郑州大学第五附属医院收治的130例PD伴牙列缺损患者,根据治疗方案分为对照组和试验组,各65例。对照组接受垫式可摘局部义齿修复,试验组接受咬合重建固定义齿修复。治疗后观察6个月,统计两组修复效果、咀嚼功能、肌肉压痛指数、颞下颌关节紊乱指数、颞下颌关节功能障碍指数、龈沟液IL-23、PGE_(2)、舒张期末峰流速(Vd)、右侧大脑中动脉的收缩期峰流速(Vs)、平均峰流速值(Vm)、治疗满意度。结果 试验组总有效率高于对照组(P<0.05),咀嚼功能优良率高于对照组(P<0.05);修复6个月后试验组颞下颌关节功能障碍指数、肌肉压痛指数、颞下颌关节紊乱指数低于对照组,咀嚼状态下大脑中动脉Vs、Vd、Vm大于对照组(P<0.05),龈沟液IL-23水平低于对照组,PGE_(2)水平高于对照组(P<0.05),试验组语音功能、固位功能、咀嚼功能满意度高于对照组(P<0.05)。结论 咬合重建固定义齿修复术可改善PD伴牙列缺损患者咀嚼功能、颞下颌功能及脑血流速度,调节龈沟液IL-23、PGE_(2)水平,提高治疗满意度。

半肝血流阻断配合间歇性Pringle法在巨大肝癌切除术中的应用比较

目的探讨半肝血流阻断配合间歇性Pringle法在巨大肝癌切除术中的应用。方法选取2019年1月至2021年12月南京医科大学附属苏州医院78例行巨大肝癌切除术的肝癌患者,按照术中血流阻断方法分为半肝组、实验组,各39例。半肝组采用半肝血流阻断,实验组采用半肝血流阻断配合间歇性Pringle法。比较实验组与半肝组的围术期指标,于术前、术后1 d、3 d、5 d检测肝功能指标,统计术后3个月内并发症及肝癌患者生命质量测定量表(QLI-LC评分)。结果半肝组术中出血量为(198.24±34.15)mL,住院时间为(9.58±1.36)d,实验组为(163.28±26.47)mL,(8.15±1.20)d(P<0.05)。两组术后1 d、3 d、5 d肝功能指标均先升高后降低(P<0.05);但各个时间点两组间肝功能指标比较差异无统计学意义(P>0.05)。半肝组并发症发生率25.64%(10/39),实验组7.69%(3/39)(P<0.05)。与术后3个月半肝组躯体功能(21.38±4.98)分、症状体征(17.87±3.76)分、心理功能(13.15±2.03)分、社会功能(14.28±2.75)分比较,实验组躯体功能(12.87±3.21)分、症状体征(10.09±2.21)分、心理功能(7.09±1.92)分、社会功能(9.27±1.04)分更低(P<0.05)。结论半肝血流阻断配合间歇性Pringle法应用于巨大肝癌切除术中能减少出血量,促进术后恢复,提高生活质量,且不会加重肝损伤及并发症的发生,安全性高。

视网膜中央动脉阻塞伴急性黄斑旁中心中层视网膜病变的黄斑区微血管研究

目的:探讨视网膜中央动脉阻塞(CRAO)伴急性黄斑旁中心中层视网膜病变(PAMM)患眼的黄斑区微血管变化情况。方法:回顾性研究。选取2020-01/2021-12于我院确诊为CRAO-PAMM组患者27例27眼,不伴PAMM的CRAO组患者29例29眼。选取于我院健康体检者33例33眼作为对照组。应用光学相干断层扫描血管成像(OCTA)测量黄斑区3mm×3mm范围内视网膜血流和厚度参数,分析CRAO-PAMM组患者黄斑区视网膜血流密度、视网膜厚度、中心凹无血管区(FAZ)面积和周长、非圆度指数(AI)及拱环周围300μm范围内全层血流密度(FD-300)与病灶区面积、最佳矫正视力(BCVA)的相关性。结果:三组受检者视网膜浅层毛细血管层(SCP)、深层毛细血管层(DCP)的总体、旁中心凹血流密度、视网膜中心凹厚度、FAZ面积、周长、AI、FD-300均有差异(均P<0.05)。在CRAO-PAMM组中,病灶区面积与DCP总体血流密度、旁中心凹血流密度呈负相关(r=-0.569,P=0.002;r=-0.543,P=0.004),与视网膜旁中心凹厚度呈正相关(r=0.606,P=0.001);BCVA(LogMAR)与DCP中心凹和旁中心凹血流密度呈负相关(r=-0.433,P=0.024;r=-0.515,P=0.006),与FAZ面积、周长和病灶区面积呈正相关(r=0.484,P=0.011;r=0.531,P=0.004;r=0.417,P=0.030)。结论:伴发PAMM的CRAO患眼黄斑区血流密度更低、黄斑区水肿程度更重且视力更差,患者BCVA可能受到病灶区面积和FAZ面积共同的影响。

皮瓣血流阻断监控设备在带蒂皮瓣阻断试验中的应用

目的探讨皮瓣血流阻断监控设备在带蒂皮瓣阻断试验中的应用效果。方法选取2019年10月-2022年6月手部骨皮缺损在我院行带蒂皮瓣移植术40例患者作为研究对象,按随机数字表法分为对照组和试验组,各20例。对照组采用传统橡皮筋阻断法,试验组采用皮瓣血流阻断监控设备进行皮瓣阻断试验。比较两组皮瓣阻断试验第1、3d皮瓣颜色、肿胀程度和第1、3、7d温度、疼痛评分及并发症情况。结果试验组皮瓣颜色、温度、肿胀程度、疼痛评分及并发症发生率均优于对照组(P<0.05)。结论皮瓣血流阻断监控设备在带蒂皮瓣阻断试验中能保持皮瓣皮肤温度恒定,根据不同个体控制皮瓣阻断压力,减轻阻断时疼痛,降低并发症发生率,可应用于临床。

Primary animal experiment to test the feasibility of a novel Y-Z magnetic hepatic portal blocking band

BACKGROUND Hepatic portal blood flow occlusion is a common technique for reducing hepatic hemorrhage during hepatectomy.We designed a novel Y-Z magnetic hepatic portal blocking band(Y-Z MHPBB)based on the principle of magnetic compression technique.AIM To introduce the Y-Z MHPBB device and verify the feasibility of this device for hepatic portal blood flow occlusion in dogs.METHODS Ten beagles were randomly divided into the experimental group and control group.The operation time,intraoperative blood loss,the number of portal blood flow occlusions,the total time spent on adjusting the blocking band,and the average time spent on adjusting the blocking band were recorded.The surgeons evaluated the feasibility and flexibility of the two portal occlusion devices.RESULTS Laparoscopic hepatectomy was successfully performed in both the experimental group and control group.There was no statistical difference between the two groups in the operation time,intraoperative blood loss,and the number of hepatic portal blood flow occlusions.With respect to the total time spent on adjusting the blocking band and the average time spent on adjusting the blocking band,the experimental group showed significantly better outcomes than the control group,with a statistical difference(P<0.05).The operators found that the Y-Z MHPBB was superior to the modified T-tube in terms of operational flexibility.CONCLUSION The Y-Z MHPBB seems to be an ingenious design,accurate blood flow occlusion effect,and good flexibility;and it can be used for hepatic portal blood flow occlusion during laparoscopic hepatectomy.

黄斑中心凹旁血流密度对BRVO患者玻璃体腔内康柏西普注射次数的预测作用评价

目的:研究非缺血型视网膜分支静脉阻塞(BRVO)合并黄斑水肿(ME)患者的光学相干断层扫描血管成像(OCTA)中围绕黄斑无血管区(FAZ)区域300μm宽度内的血流密度(FD-300),探讨并评估该参数对眼内注药次数的预测作用。方法:回顾性研究,选取2021-01/2022-03于南京医科大学眼科医院诊断为非缺血型BRVO合并ME并接受了玻璃体腔内康柏西普注射(IVC)的患者50例50眼,采用3+PRN治疗方案。将眼内注药治疗≤5次的患眼列为B组(25例25眼);眼内注药治疗>5次的患眼列为C组(25例25眼),另外随机选取对侧眼作为对照组A组(25例25眼)。采用OCTA对所有患眼行黄斑区3mm×3mm范围模式扫描采集视网膜血流图像,获取黄斑中心凹下视网膜厚度(CMT)及FD-300值。比较各组基线时及第3针注射后1、3、6、12mo时的CMT、BCVA(LogMAR)、FD-300。结果:B组和C组受试者治疗后1、3、6、12mo时的患眼BCVA(LogMAR)较基线均明显改善(均P<0.05);CMT较基线均明显降低(均P<0.05);FD-300较基线降低(均P<0.05)。Pearson相关分析显示,BCVA(LogMAR)变化量与基线FD-300、CMT呈显著正相关(B组:r=0.77、0.70,均P<0.01;C组:r=0.89、0.78,均P<0.01)。眼内注药次数与基线FD-300呈显著负相关(B组:r=-0.63,P<0.01;C组:r=-0.71,P<0.01)。Logistic回归分析显示,治疗前FD-300参数是影响眼内注药次数的因素。结论:玻璃体腔注射康柏西普治疗非缺血型BRVO合并ME患者能有效减轻患眼黄斑水肿,提高患者视力,降低FD-300。基线BCVA越差以及基线FD-300越低的患眼可能需要更多的注射次数。使用OCTA观察黄斑区FD-300,可在治疗前更好地预测非缺血型BRVO合并ME患者的最终视力恢复。