Chin. Phys. Lett.  2017, Vol. 34 Issue (9): 098701    DOI: 10.1088/0256-307X/34/9/098701
Temperature Impacts on Transient Receptor Potential Channel Mediated Calcium Oscillations in Astrocytes
Yu-Hong Zhang, Hui Liu, Ying-Rong Han, Ya-Fei Chen, Su-Hua Zhang, Yong Zhan**
School of Sciences, Hebei University of Technology, Tianjin 300401
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Abstract We computationally study the possible effects of thermosensitive transient receptor potential (TRP) channels on the spontaneous calcium oscillations in astrocytes at various temperatures. Based on the previous model and the result of thermosensitive TRP channels' open probabilities, some meaningful conclusions are obtained. It is shown that the occurrence of calcium oscillations depends on temperature and the molar heat capacity difference between the closed and open channels ($\Delta C_{\rm p}$). The data indicate that calcium oscillations in astrocytes occurred in the ranges of 7$^{\circ}\!$C–11$^{\circ}\!$C and 27$^{\circ}\!$C–30$^{\circ}\!$C when $\Delta C_{\rm p}$ is 16 kJ$\cdot$mol$^{-1}\cdot$K$^{-1}$, and calcium oscillations only occur in the range of 27$^{\circ}\!$C–30$^{\circ}\!$C when $\Delta C_{\rm p}$ is 2 kJ$\cdot$mol$^{-1}\cdot$K$^{-1}$. In this study, the frequency decreases rapidly at temperatures ranging from 7$^{\circ}\!$C to 11$^{\circ}\!$C, and there is a contrary result in the range of 27$^{\circ}\!$C–30$^{\circ}\!$C.
Received: 12 October 2016      Published: 15 August 2017
PACS:  87.16.Uv (Active transport processes)  
  05.70.Ln (Nonequilibrium and irreversible thermodynamics)  
Fund: Supported by the National Natural Science Foundation of China under Grant Nos 11175055 and 11547013, and the Natural Science Foundation of Hebei Province under Grant No A2015202268.
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Yu-Hong Zhang, Hui Liu, Ying-Rong Han et al  2017 Chin. Phys. Lett. 34 098701
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Yu-Hong Zhang
Hui Liu
Ying-Rong Han
Ya-Fei Chen
Su-Hua Zhang
Yong Zhan
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