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首页> 外文期刊>Canadian Journal of Zoology >Synchrony in the amphibian lymphatic system: evidence for bilateral posterior lymph heart synchrony and cardiac-lymphatic synchrony in Rana catesbeiana and Bufo marinus
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Synchrony in the amphibian lymphatic system: evidence for bilateral posterior lymph heart synchrony and cardiac-lymphatic synchrony in Rana catesbeiana and Bufo marinus

机译：两栖类淋巴系统的同步性：牛蛙和蟾蜍海马双侧后淋巴心脏同步和心脏-淋巴同步的证据

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摘要

Early investigations into amphibian lymph heart function established that lymph heart contractions were synchronous with neither the systemic heart, nor the lungs, nor each other. However, the present study concludes that there is synchronization between the cardiac heart and the lymph hearts and that the posterior lymph hearts in both Rana catesbeiana Shaw, 1802 and Bufo marinus (L., 1758) beat synchronously as well. Pressure peaks were recorded through cannulation of the ischiatic artery and each posterior lymph heart and subsequently analyzed to determine the time differences between arterial diastole and lymph heart systole or between two bilateral lymph heart systoles. Results show that there is clear synchronization between the lymph heart systoles of two bilateral posterior lymph hearts. This lymph heart synchrony is further supported by using Poincare plot analysis to visually compare the lymph heart inter-beats. Cardiac heart and lymph heart contractions also show a degree of synchronization, even though the lymph hearts beat up to three times as fast as the cardiac heart. These results support the conclusion that synchrony is characteristic of the anuran lymphatic system and that synchronization of the cardiac heart and the lymph heartscould impart an energetic advantage that benefits fluid homeostatic mechanisms.
机译：早期对两栖类淋巴心脏功能的研究表明，淋巴心脏收缩与全身心脏，肺或彼此都不同步。然而，本研究得出的结论是，心脏心脏和淋巴心脏之间存在同步，并且Rana catesbeiana Shaw，1802和Bufo marinus（L.，1758）的后淋巴心脏也同步跳动。通过对坐骨动脉和每个后淋巴心脏的插管记录压力峰值，然后进行分析以确定动脉舒张和淋巴心脏收缩之间或两个双侧淋巴心脏收缩之间的时间差。结果表明，两个双侧后侧淋巴心脏的淋巴心脏收缩之间存在明显的同步性。通过使用Poincare图分析在视觉上比较淋巴心脏的心跳，进一步支持了这种淋巴心脏的同步性。心脏的心脏和淋巴心脏的收缩也显示出一定程度的同步性，即使淋巴心脏的跳动速度是心脏的三倍。这些结果支持这样的结论：同步性是无核淋巴系统的特征，而心脏与淋巴心脏的同步性可以赋予有益的优势，有益于流体体内平衡机制。

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