Investigation on cardiac function during anaphylactic shock

过敏性休克时心功能的调查

• 批准号: 20592131
• 负责人: SHIBAMOTO Toshishige
• 金额: $ 3.16万
• 依托单位: Kanazawa Medical University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20592131/
• 关键词: アナフィラキシーショック; 心機能; 血液交差灌流心臓; Emax; 冠血管収縮; 心アナフィラキシー; 血液交叉灌流心臓; 心収縮性; 冠動脈血流; βアドレナリン受容体阻害剤; dP/dt max; 循環ショック; ラット; 血液交差灌流; 摘出灌流心臓; dP; dtmax; eEmax

The aim of the present study was to determine the effects of anaphylaxis on the left ventricular function in both anesthetized rats and isolated perfused rat hearts. The rats were sensitized with ovalbumin. In anesthetized rats, Emax, an index of cardiac contractility did not decrease but increased at 15 min after antigen injection, suggesting that cardiac contractility did not decrease but increased during sustained hypotension due to systemic anaphylaxis in anesthetized rats. In the study using isolated hearts that were excised from Wister rats sensitized with ovalbumin, and perfused at constant flow with blood in a cross-circulated fashion. Cardiac contractility was evaluated by positive maximum rate of changes in left ventricular pressure (dP/dt_<max>) and end-systolic pressure volume relationships (ESPVRs). After antigen, the coronary vascular resistance increased four times the baseline only transiently after antigen. The dP/dt_<max> decreased transiently along with the decrease in coronary flow. The ESPVRs measured at 10 min after antigen did not change from the baseline. The results from perfused heart experiments suggest that cardiac contractility decreased only transiently along with a decrease in coronary blood flow during cardiac anaphylaxis of isolated blood-perfused rat hearts. In conclusion, cardiac contractility may not decrease, but rather increase later than 10 min after antigen exposure. However, the cardiac anaphylactic reaction itself is accompanied by a transient flow-dependent decrease in cardiac contractility.

本研究的目的是确定在麻醉大鼠和孤立的灌注大鼠心脏中过敏反应对左心室功能的影响。大鼠用椭圆蛋白敏化。在麻醉大鼠中，EMAX，心脏收缩率的指数不会降低，但在抗原注射后15分钟升高，这表明由于麻醉大鼠全身性过敏症而导致的持续性低血压，心脏收缩率没有降低，但增加了。在研究中，使用孤立的心脏，这些心脏是从用椭圆蛋白敏化的北鸟大鼠中切除的，并以跨流通的方式在恒定流动下以恒定的流量进行灌注。通过左心室压力（DP/DT_ <max>）和终端节体压力量关系（ESPVR）的最大变化率评估心脏收缩力。抗原之后，冠状动脉血管耐药性仅在抗原后短暂增加了基线的四倍。 DP/DT_ <max>随着冠状动脉流量的减少而瞬时减少。抗原后10分钟测得的ESPVR没有从基线变化。灌注心脏实验的结果表明，心脏收缩力仅在孤立的血液吞噬大鼠心脏的心脏过敏反应期间暂时降低，而冠状动脉血流降低。总之，心脏收缩性可能不会降低，而是抗原暴露后10分钟的增加。但是，心脏过敏反应本身伴随着心脏收缩性的瞬时流动依赖性降低。

项目成果

Pulmonary vasoconstrictive and bronchoconstrictive responses to anaphylaxis are weakened via β_2-adrenoceptor activation by endogenous epinephrine in anesthetized rats.

麻醉大鼠中内源性肾上腺素激活β_2-肾上腺素受体，从而减弱了对过敏反应的肺血管收缩和支气管收缩反应。

• 发表时间: 2011
• 期刊: Anesthesiology
• 影响因子: 8.8
• 作者: Shibamoto T;Tsutsumi M;Kuda Y;Ohmukai C;Zhang W;Kurata Y;Wei Zhang
• 通讯作者: Wei Zhang

Portacaval shunting attenuates portal hypertension and systemic hypotension in rat anaphylactic shock

• DOI: 10.1007/s12576-010-0123-x
• 发表时间: 2011-03
• 期刊: The Journal of Physiological Sciences
• 作者: C. Kamikado;T. Shibamoto;Wei Zhang;Y. Kuda;Chieko Ohmukai;Y. Kurata

Pulmonary vasoconstrictive and bronchoconstrictive responses to anaphylaxis are weakened via β 2-adrenoceptor activation by endogenous epinephrine in anesthetized rats.

麻醉大鼠中内源性肾上腺素激活β2-肾上腺素受体，从而减弱了对过敏反应的肺血管收缩和支气管收缩反应。

• 发表时间: 2011
• 期刊: Anesthesiology. 114(3)
• 作者: Zhang W;Shibamoto T;Kuda Y;Ohmukai C;Kurata Y
• 通讯作者: Kurata Y

Mast cells are not involved in the ischemia-reperfusion injury in perfused rat liver.

• DOI: 10.1016/j.jss.2010.11.900
• 发表时间: 2012-05
• 期刊: The Journal of surgical research
• 作者: T. Shibamoto;M. Tsutsumi;Y. Kuda;Chieko Ohmukai;Wei Zhang;Y. Kurata

ラット血液交差灌流心臓における心アナフィラキシーの検討

大鼠血液交叉灌注心脏心脏过敏反应的研究

• 发表时间: 2010
• 作者: Shibamoto T;Tsutsumi M;Kuda Y;Ohmukai C;Zhang W;Kurata Y;Wei Zhang;Chiaki Kamikado;Toshishige Shibamoto;倉田康孝(芝本利重);九田裕一(芝本利重)
• 通讯作者: 九田裕一(芝本利重)