Department of Bioengineering, University of Washington, Seattle, Washington, United States of America.
PLoS One. 2023 Oct 19;18(10):e0289652. doi: 10.1371/journal.pone.0289652. eCollection 2023.
The heart is widely acknowledged as the unique driver of blood circulation. Recently, we discovered a flow-driving mechanism that can operate without imposed pressure, using infrared (IR) energy to propel flow. We considered the possibility that, by exploiting this mechanism, blood vessels, themselves, could propel flow. We verified the existence of this driving mechanism by using a three-day-old chick-embryo model. When the heart was stopped, blood continued to flow for approximately 50 minutes, albeit at a lower velocity. When IR was introduced, the postmortem flow increased from ~41.1 ± 25.6 μm/s to ~153.0 ± 59.5 μm/s (n = 6). When IR energy was diminished under otherwise physiological conditions, blood failed to flow. Hence, this IR-dependent, vessel-based flow-driving mechanism may indeed operate in the circulatory system, complementing the action of the heart.
心脏被广泛认为是血液循环的唯一驱动力。最近，我们发现了一种无需施加压力即可运行的流动驱动机制，它利用红外线（IR）能量来推动流动。我们考虑了一种可能性，即通过利用这种机制，血管本身可以推动流动。我们使用三天大的鸡胚模型验证了这种驱动机制的存在。当心脏停止跳动时，血液仍能继续流动约 50 分钟，尽管速度较慢。当引入 IR 时，死后的血流从约 41.1 ± 25.6 μm/s 增加到约 153.0 ± 59.5 μm/s（n = 6）。当在其他生理条件下减少 IR 能量时，血液无法流动。因此，这种依赖 IR 的基于血管的流动驱动机制确实可能在循环系统中运行，补充心脏的作用。
