Bioelectrical Study of Bonghan Corpuscles on Organ Surfaces in Rats

Sang-Hyun Park, Byung-Cheon Lee, Cheon-Joo Choi, Kwang-Sup Soh, Jae-Hong Choi, SoYeong Lee and PanDong Ryu

J. Korean Phys.Soc. 55,688 [doi: 10.3938/jkps.55.688 | PDF Download]

Anatomical and morphological studies of Bonghan corpuscles have beenperformed extensively, and their potential circulatory functionneeds to be established. For this purpose, a critical step is toexamine their bioelectrical properties. We measured the restingpotential of Bonghan corpuscles and observed spontaneous electricalbursts with rhythmic spikes. The average resting potential was--39.9 $\pm$ 15.5 mV, the amplitude and the period of the spikesduring spontaneous burst activity were 1.2 $\pm $ 0.6 mV and 0.8$\pm $ 0.8 sec, respectively. The average duration of spontaneousburst was 16.6 $\pm $ 14.9 seconds. These electrical signalsresembled those found in smooth muscle. The results strongly supporta putative circulatory function for Bonghan systems.