期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 22, 期 16, 页码 -出版社
MDPI
DOI: 10.3390/ijms22168358
关键词
schizophrenia; brain pH; lactate; mitochondria dysfunction; dopamine; glutamate; pH-regulating proteins
资金
- Medical Research Center Program through the National Research Foundation of Korea - Ministry of Science and ICT [NRF-2017R1A5A2014768]
Postmortem studies have shown that schizophrenia patients have lower brain pH levels, with implications for the role of this phenomenon in disease progression being discussed in depth. Changes in mitochondrial morphology and function in schizophrenia patients may contribute to abnormal metabolism. Alterations in pH levels could have effects on neuronal activity and pathophysiology.
Postmortem studies reveal that the brain pH in schizophrenia patients is lower than normal. The exact cause of this low pH is unclear, but increased lactate levels due to abnormal energy metabolism appear to be involved. Schizophrenia patients display distinct changes in mitochondria number, morphology, and function, and such changes promote anaerobic glycolysis, elevating lactate levels. pH can affect neuronal activity as H+ binds to numerous proteins in the nervous system and alters the structure and function of the bound proteins. There is growing evidence of pH change associated with cognition, emotion, and psychotic behaviors. Brain has delicate pH regulatory mechanisms to maintain normal pH in neurons/glia and extracellular fluid, and a change in these mechanisms can affect, or be affected by, neuronal activities associated with schizophrenia. In this review, we discuss the current understanding of the cause and effect of decreased brain pH in schizophrenia based on postmortem human brains, animal models, and cellular studies. The topic includes the factors causing decreased brain pH in schizophrenia, mitochondria dysfunction leading to altered energy metabolism, and pH effects on the pathophysiology of schizophrenia. We also review the acid/base transporters regulating pH in the nervous system and discuss the potential contribution of the major transporters, sodium hydrogen exchangers (NHEs), and sodium-coupled bicarbonate transporters (NCBTs), to schizophrenia.
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