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Electronic Journal of Emerging Infectious Diseases ›› 2023, Vol. 8 ›› Issue (3): 12-18.doi: 10.19871/j.cnki.xfcrbzz.2023.03.003

• Original Articles • Previous Articles     Next Articles

Effect of antituberculosis drug pyrazinamide on neuronal activity

Shao Honghua1, Zhu Qingdong2, Long Qian3, Luo Xiaolu4, Nong Jianhong5, Li Sijun1,4, Wu Fengyao4   

  1. 1. Medical Department, The Fourth People's Hospital of Nanning,Guangxi Nanning 530023, China;
    2. Tuberculosis Department, The Fourth People's Hospital of Nanning,Guangxi Nanning 530023, China;
    3. Clinical Lab, The Fourth People's Hospital of Nanning,Guangxi Nanning 530023, China;
    4. Infectious Diseases Laboratory, The Fourth People's Hospital of Nanning,Guangxi Nanning 530023, China;
    5. Anesthesiology Department, The Fourth People's Hospital of Nanning,Guangxi Nanning 530023, China
  • Received:2022-11-18 Online:2023-06-30 Published:2023-07-20

Abstract: Objective Previous study suggests that pyrazinamide (PZA), a common anti-tuberculosis drug, may lead to neuronal damage. The mechanism of neuronal damage caused by PZA remains unclear. To further investigate the potential mechanism of neuronal damage caused by PZA , We constructed an in vitro model to study the effect of PZA on neurons. Method The in-vitro neuron model were constructed, which were incubated with different concentrations of PZA for 6h. Optimal concentration of PZA was selected. Based on optimal concentration, the neurons were then incubated with PZA (10µmol/L) for 12h (10-PZA-12h), and the neurons were incubated with PZA(10µmol/L) for 6h and then replaced with normal medium for another 6h (10-PZA-normal-6h). We observed the structure and morphology of neurons and detected the ATP content, survival rate, expression of Na+/K+-ATPase α1 subunit(ATP1A1), electrophysiology—resting potential (RP) and action potential (AP) in neurons. Result After the neurons were incubated in PZA (10µmol/L) for 6h, the neuronal structure, morphology and survival rate were not significantly changed, but the ATP content, the expression of ATP1A1 and amplitude of AP were decreased. Inversely, the RP was increased. In 10-PZA-12h group, the morphology and structure of neurons were changed; the ATP content, neuronal survival rate, the expression of ATP1A1 and amplitude of AP were significantly decreased; the RP was increased. In 10-PZA-normal-6h group,the neuronal morphology and structure, ATP content, survival rate, the expression of ATP1A1 and amplitude of AP and RP were not significantly changed. Conclusion PZA inhibits the activity of neurons. With the extension of drug action time, the neurons appear damage,and timely removal of inducement can save neurons.

Key words: Antituberculosis drugs, Pyrazinamide, Neuron, Adenosine triphosphate, Electrophysiology

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