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压力反射敏感性

压力反射敏感性的相关文献在1994年到2021年内共计73篇,主要集中在内科学、基础医学、药学 等领域,其中期刊论文72篇、专利文献209612篇;相关期刊58种,包括中国医疗器械信息、中国病理生理杂志、中国实验诊断学等; 压力反射敏感性的相关文献由195位作者贡献,包括吴国强、何奔、周丽诺等。

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压力反射敏感性—发文趋势图

压力反射敏感性

-研究学者

  • 吴国强
  • 何奔
  • 周丽诺
  • 丁世芳
  • 卢青
  • 贾三庆
  • 郑道声
  • 高鸿
  • 黄莹
  • 丰有吉
  • 期刊论文
  • 专利文献

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    • 张琪; 李芳芳; 温欣; 谭颖颖
    • 摘要: 目的:观察电针"太冲"对两肾一夹型高血压大鼠的动脉血压、交感神经活性、压力反射敏感性、孤束核(NTS)内α2肾上腺素受体(α2AR)的表达和功能的影响,探讨电针"太冲"降压效应的神经机制.方法:雄性SD大鼠随机分为假手术组、模型组、电针组和假电针组,每组12只.各组大鼠在植入遥测血压传感器探头后,采用两肾一夹法制备高血压大鼠模型.在模型建立4周后,各治疗组电针相应穴位,每日1次,持续28 d.用频域法评估自主神经功能,顺序法分析自发性压力反射敏感性,酶联免疫吸附法检测血浆去甲肾上腺素(NE)水平,免疫组织化学法检测NTS内α2AR阳性神经元变化,蛋白免疫印迹法检测NTS内α2AR表达水平,核团微注射法评价NTS内α2AR的功能变化.结果:与假手术组比较,模型组大鼠的平均动脉压、血浆NE含量及低频/总频谱(LF/TP)、低频/高频(LF/HF)值显著升高(P<0.01),压力反射总体增益、上行序列增益和下行序列增益显著降低(P<0.01),NTS内α2AR阳性神经元数量和蛋白表达水平显著下降(P<0.01),NTS内微注射可乐定诱发的平均动脉压和心率变化值显著缩小(P<0.01).与模型组和假电针组比较,电针组大鼠的平均动脉压在电针治疗的第3、4周显著降低(P<0.01),血浆NE含量及LF/TP和LF/HF值均显著降低(P<0.01),压力反射总体增益、上行序列增益和下行序列增益显著升高(P<0.01),NTS内α2AR阳性神经元数量和蛋白表达水平显著升高(P<0.05),同时NTS内微注射可乐定诱发的平均动脉压和心率变化值也显著增大(P<0.05).结论:电针"太冲"可以降低肾血管性高血压大鼠的动脉血压,抑制交感神经活性,改善压力反射敏感性,并上调NTS内的α2AR表达和功能活动.
    • 赵晓霖; 彭雯雯; 刘国英; 洪玲; 李明余; 潘燕霞
    • 摘要: AIM:To investigate the effects of exercise training on the progression from prehypertension to hy -pertension,blood pressure regulation and the angiotensin-converting enzyme 2(ACE2)-angiotensin(Ang)(1-7)-MAS axis activation in cardiovascular centers ,and to elucidate the central mechanisms of exercise training postponing hyperten -sion progression.METHODS:The male spontaneously hypertensive rats(SHR;n=20,5 weeks old)and normotensive Wistar Kyoto(WKY)rats(n=20)were randomly assigned to sedentary(Sed)group and exercise training(ExT)group. The trained rats run on a treadmill in moderate-intensity for 20 weeks.Systolic blood pressure(SBP)was measured by tail-cuff method.The baroreflex sensitivity(BRS)was assessed by intravenous injection of phenylephrine.The expression of ACE2 and MAS receptor at mRNA and protein levels in baroreflex centers were determined by real-time PCR and Western blot,respectively.Alterations of BRS were evaluated before and after intracerebroventricular injection of MAS receptor ago -nist Ang(1-7)and its antagonist A779,respectively.RESULTS:Compared with SHR +Sed group,exercise training since prehypertension significantly postponed the development of hypertension ,delayed the hypertension progression ,and decreased SBP in both SHR and WKY rats(P<0.05).Exercise training enhanced blood pressure regulation and improved the BRS in SHR(P<0.01).The expression of ACE2 and MAS receptor at mRNA and protein levels in the baroreflex cen-ters(rostral ventrolateral medulla ,nucleus tract solitarius and paraventricular nucleus )were up-regulated in SHR +ExT group(P<0.05).Central administration of A779 abolished the benefits of exercise-induced improvement of BRS in SHR +ExT group(P<0.01).In contrast,Ang(1-7)improved the BRS in both SHR +Sed group and SHR +ExT group(P<0.05).CONCLUSION:Exercise training postpones hypertension progression and improves blood pressure regula -tion,which may be associated with the activation of central ACE 2-Ang(1-7)-Mas axis.%目的:观察运动训练对高血压前期的血压进展、血压调节以及中枢血管紧张素转换酶2(ACE2)-血管紧张素(Ang)(1-7)-MAS轴的影响,探讨运动训练延缓高血压进展的中枢机制.方法:5周龄雄性自发性高血压大鼠(SHR)和正常血压WKY大鼠各20只,随机分成安静组和运动训练组,每组10只.运动组大鼠进行20周中低强度跑台运动.采用尾套法测定大鼠尾动脉收缩压,药物法检测动脉压力反射敏感性(BRS).Real-time PCR和Western blot分别检测压力反射中枢ACE2和MAS的mRNA和蛋白表达.侧脑室注射MAS受体激动剂Ang(1-7)及拮抗剂A779,检测注药前后的BRS变化.结果:始于高血压前期的运动训练可推迟高血压发生、延缓高血压进展,明显降低SHR和WKY大鼠血压(P<0.05),并改善SHR血压调节功能,提高其BRS(P<0.01);此处,运动训练可上调SHR压力反射中枢(孤束核、延髓头端腹外侧区和室旁核中)ACE2和MAS的mRNA和蛋白表达(P<0.05);中枢给予A779抵消了运动对SHR BRS的改善作用(P<0.01),相反,注射Ang(1-7)则增强安静组和运动组SHR的BRS(P<0.05).结论:运动训练延缓高血压前期进展到高血压的进程及改善血压调节作用可能与运动增强中枢ACE2-Ang(1-7)-MAS轴功能有关.
    • 田磊; 路凯; 祝瑜; 殷永强; 钟毅; 高鸿
    • 摘要: 目的 观察腺苷A1受体在右美托咪定调节压力反射敏感性(baroreflex sensitivity,BRS)中的作用.方法 健康成年雄性SD大鼠32只,体重240~280 g,按随机数字表随机分为四组:对照组(C组)、选择性腺苷A1受体阻断剂组(P组)、右美托咪定组(D组)、选择性腺苷A1受体阻断剂+右美托咪定组(PD组),每组8只.C组泵注生理盐水40 ml·kg-1 ·h-1负荷量15 min,维持泵注10ml·kg-1·h-1;p组腹腔注射选择性腺苷A1受体阻断剂8-环戊基-1,3-二丙基黄嘌呤(DPCPX)1 mg/kg,泵注同C组方案的生理盐水;D组右美托咪定负荷量100 μg/kg,维持量100μg·kg-1·h-1持续泵注;PD组腹腔注射DPCPX 1 mg/kg并泵注右美托咪定,泵注剂量同D组.采用苯肾上腺素升压法于泵注前(T0)、泵注后60 min(T1)和泵注后120min(T2)测定BRS.结果 与T0时比较,T1和T2时D组和PD组BRS明显升高(P<0.05).与C组和P组比较,T1和T2时D组和PD组BRS均明显升高(P<0.05).与D组比较,T1和T2时PD组BRS明显降低(P<0.05).结论 右美托咪定可能通过腺苷A1受体增加大鼠BRS.
    • 刘智
    • 摘要: 糖尿病心血管自主神经病变(CAN)是糖尿病微血管病变和糖脂代谢异常引起的神经病变的一种,是2型糖尿病较常见的慢性并发症,2.5%~50.0%的糖尿病患者伴有CAN.其发生率随着病情的延长、年龄增长和尿白蛋白排泄量的增加而升高.和无自主神经病变者相比,糖尿病伴自主神经病变者预后较差、猝死发生率高.CAN属于糖尿病神经病的范畴,发病原因并未明确.常用的检测CAN的方法包括心率变异性(HRV)分析、压力反射敏感性(BRS)分析和影响检测方法等.控制血糖、血脂、血压和体重的综合治疗是防治糖尿病CAN的基本方法.
    • 钟毅; 殷永强; 祝瑜; 田磊; 高鸿
    • 摘要: Objective To investigate the effects of dexmedetomidine (Dex) on baroreflex sensitivit (BRS) of rabbits,and evaluate the effects of Dex on the tension of vagus nerve.Methods Twenty four healthy male rabbits were randomly divided into 3 groups(n=8),including group C(control),group D1(low dose of Dex),and group D2(high dose of Dex).Rabbits were administered with Dex normal saline in group C,they were administered with Dex at loading dose of 10 μg/kg,and then pumped with Dex at 5 μg·kg1·h-1 in group D1,they were administered with Dex at loading dose of 60 μg/kg and then at 30 μg·kg-1·h-1 in group D2.The values of BRS was measured before(T0),30 min after(T1) and 60 min after(T2) intravenous pumping of Dex.Results The values of BRS at T1,T2 in group D1 and D2 incareased compared with T0 (P<0.05),The values of BRS at T2 in group D1 decreased significantly compared with T1 (P<0.05).The values of BRS in group D1 and D2 were significantly increased than group C at T1,T2 (P<0.05).The values of BRS in group D2 were significantly increased than group D1 at T1,T2 (P<0.05).Conclusions Dex can increase BRS of rabbits,with increasing of Dex concentration of BRS increased effect are more significant and persistent,also which reflects the Dex can increase the vagus nerve tension in dose-dependent manner.%目的 研究右美托咪定(dexmedetomidine,Dex)对家兔压力反射敏感性(baroreflex sensitivity,BRS)的影响,评估药物对迷走神经的张力影响.方法 健康新西兰大白兔24只按随机数字表法分为3组(每组8只):对照组(C组)、低剂量Dex组(D1组)和高剂量Dex组(D2组).C组持续泵注生理盐水;D1组Dex负荷量10 μg/kg,持续泵注量5μg·kg-1·h-1;D2组Dex负荷量60 μg/kg,持续泵注量30 μg·kg-1·h-1.于Dex给药前(T0)、给药后30 min(T1)和给药后60 min(T2)用血管活性药物法测定BRS值. 结果 D1组和D2组BRS值在T1、T2时高于T0时(P<0.05),D1组BRS值T2时较T1时明显降低(P<0.05).T1、T2时D1组和D2组BRS值较C组增高(P<0.05),D2组BRS值较D1组增高(P<0.05). 结论 Dex增加家兔的BRS,BRS的增高随药物剂量的增加而更显著及持久,说明Dex剂量依赖性地增加迷走神经张力.
    • 吴琼; 刘永明; 高俊杰; 邵春林; 沈智杰; 陈铁军; 郭蔚; 王英杰; 王肖龙
    • 摘要: 目的:研究四逆汤方对腹主动脉缩窄大鼠血压和压力反射敏感性(BRS)的影响。方法采用腹主动脉缩窄法制备高血压大鼠模型50只,造模成功后随机分为模型组(M组)、假手术组(B组)、四逆汤组(S组)、四逆汤+培哚普利组(SP组)、培哚普利组(P组)共5组,每组10只。术后4周开始灌胃,以假手术组为空白对照组,培哚普利组为阳性药物对照组,药物干预8周。用尾动脉仪连续动态测量大鼠左前肢血压。干预后8周通过股动脉插管,股静脉注射苯肾上腺素观察大鼠 BRS、血压变化。结果造模后4周,与假手术组相比,各组收缩压均显著增高(P0.05),其中四逆汤组、四逆汤+培哚普利组舒张压增高(P0.05)。药物干预后,与模型组相比,四逆汤组、四逆汤+培哚普利组、培哚普利组 BRS明显上升(P<0.001)。结论四逆汤可改善腹主动脉缩窄大鼠的血压,可增加腹主动脉缩窄大鼠压力反射敏感性。%Objective To study the effects of Sini decoction(SND)on blood pressure and baroreflex sensitivity(BRS)in rats with ab-dominal aortic coarctation.Methods Fifty hypertension rats were established by abdominal aortic coarctation operation.After model-ing,rats were randomly divided into 5 groups:Sham operation group,SND group,SND plus perindopril group,perindopril group and model group.Rats were gavaged 4 weeks later.The sham operation group was the control group,perindopril as the positive control group.Caudal artery with continuous dynamic measurement instrument left forelimb blood pressure in rats.By cannulating into femoral artery,injecting phenylephrine into femoral artery,we observe the change of BRS,MAP,and HR. Results After modeling of 4 weeks,compared with the control group,the systolic blood pressure were significantly increased in each group(P<0.001).After drug intervention of 4 weeks,compared with the model group,the systolic blood pressure were significantly lower in SND group,SND plus perindopril group,perindopril group(P<0.001).The diastolic blood pressure was lower after modeling (P<0.05).After drug in-tervention,compared with model group,the BRS obviously increased in SND group,SND plus perindopril group,perindopril group(P<0.001).Conclusion SND can improve the blood pressure and increase the baroreflex sensitivity in rats with abdominal aortic coarctation.
    • 姜宪; 兰艳; 杨艳召; 李丽威; 卢焕俊; 李香兰; 金元哲
    • 摘要: 目的 在SD大鼠制备去窦弓反射模型,为心血管调节机制的研究提供新和实验方法.方法 通过切断窦神经和主动脉神经,建立去窦弓反射模型,利用苯肾上腺素和硝普钠,动态观察SD大鼠血压和心率的变化,监测分析压力感受性反射敏感性.结果 去窦弓反射组与正常组、假手术组相比较,应用苯肾上腺素和硝普钠时均有明显的血压变化,无显著性差异(P>0.05)但心率不引起相应的变化,差异有显著性(P<0.05).结论 在SD大鼠同时破坏窦神经和主动脉神经,可明显降低压力感受性反射,该模型可应用于心血管机制的研究.
    • 兰艳; 姜宪; 杨彦召; 李丽威; 金婧; 金元哲
    • 摘要: 目的 观察双侧迷路破坏对压力感受性反射敏感性的影响.方法 清洁级雄性大鼠40只,随机分为正常组、手术组和假手术组.手术组和假手术组又进一步分为双侧迷路破坏组(bilateral labyrinthectomy,BL)和压力感受性反射去除组(sinoaortic denervation,SAD).通过静脉灌流苯肾上腺素(phenylephrine,PE)和硝普钠(sodium nitroprusside,SNP)观察压力感受性反射敏感性的变化.结果 (1)BL不影响PE所诱发的压力感受性反射敏感性,但是使SNP所诱发的压力感受性反射敏感性降低;(2)SAD后大鼠失去调节PE所诱发的急性高血压的能力,而减弱对SNP所诱发的急性低血压的调节能力.结论 压力感受性反射和前庭系统可能共同参与急性低血压时血压的调节.%Objective To investigate the effect of labyrinthectomy on baroreceptor reflex sentivity. Methods Forty adult male Wistar rats were divided into three groups: normal intact group, sham-operated group and operated group. The sham-operated group and operated group were subdivided into bilateral labyrinthectomy (BL) group and sinoaortic dencrvation (SAD) group. To investigate the changes of baroreflex sensitivity by increasing arterial pressures with ramp infusions of phcnylephrinc (PE) and by lowering BP with sodium nitroprusside (SNP). Results (1) BL didn't affect the sensitivity of PE-induccd barorcflex ,but weakened the barorcflex sensitivity during intravenous infusion of SNP. (2) SAD made the baroreceptor reflex loss the regulation ability of PE-induccd hypertension and attenuated the sensitivity induced by injected SNP. Conclusion Both the barorcflex and the ves-tibular system cooperate to maintain AP during SNP-induced hypotension.
    • 黄丹; 陈杰; 杜唯佳; 王祥瑞
    • 摘要: 目的 探讨高血压患者围术期压力反射敏感性(baroreflex sensitivity,BRS)的变化规律及自主神经功能状态.方法 采用有创动脉测压测定48例高血压患者(包括24例经治疗的患者及24例未经治疗的患者)及48例非高血压患者在给予硝酸甘油前后的血压、心率变化,根据Robert公式计算出BRS值. 结果 高血压患者术前BRS值(3.3±2.0)、术中的BRS值(1.7±1.1)明显低于非高血压患者[术前、术中分别是(5.7±4.1)和(3.3±3.1)](P<0.01),未经治疗的高血压患者术前BRS值(2.1±1.3)、术中BRS值(1.5±0.9)、术毕时的BRS值(1.4±1.3)明显低于经治疗的高血压患者[术前、术中、术毕分别是(5.3±1.8)、(2.0±1.8)、(1.8±1.2)](P<0.01). 结论 高血压患者围术期的自主神经功能明显受损,经治疗的高血压患者围术期的自主神经功能有所改善.%Objective To analyze perioperative baroreflex sensitivity (BRS) in patients with hypertention and the autonomic nerve activity.Methods Blood pressure and heart rate before and after injection nitroglycerin were measured in patients with hypertension or without (n=48 including 24 undergoing treatment patients).BRS was calculated according to Robert formula.Results BRS Baseline(3.3±2.0) and BRS intraoperative(1.7±1.1) in patients with hypertension were obviously lower than those in non-hypertension patients [(5.7±4.1),(3.3±3.1) respectively,P<0.01].BRS Baseline (2.1±1.3),BRS intraoperative (1.5±0.9)and BRS postoperative (1.4±1.3) in patients without treatment were lower than those in patients undergoing treatment [(5.3±1.8),(2.0±1.8),(1.8±1.2) respectively,P<0.01].Conclusions The perioperative autonomic nerve function is significantly impaired in patients with hypertension.And the impaired autonomic can be improved by treatment.
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