[Effect of formaldehyde on energy metabolism in postnatal rat cortex neurons in culture].
OBJECTIVE
The mechanism of the effect of formaldehyde on CNS which is much concerned to formaldehyde poisoning was studied.


METHODS
In the present study, incubation of postnatal rat cortex neurons in culture with formaldehyde at 1, 2, 4, 8 mg/L (medium) was carried out to evaluate the effect of formaldehyde on energy metabolism.


RESULTS
The result of cytochemistry showed a significant down-regulation of cytochrome oxidase activity after consecutive formaldehyde treatment for 4 hours compared with the control (P < 0.01), the significant dosage-response relationship was also observed (R value is - 0.92, P < 0.01).


CONCLUSIONS
The result demonstrates that excessive exposure of formaldehyde can decrease cytochrome oxidase activity in cortex neurons which indicates energy metabolism will be decreased and therefore normal physiology function would be damaged.
Liu
Ting
T
Department of Toxicology, Institute of Environment Health and Related Product Safety, China CDC, Beijing 100021, China.
Bai
Xue-Tao
XT
D000818:Animals; D000831:Animals, Newborn; D002478:Cells, Cultured; D002540:Cerebral Cortex / Q000166:cytology / Q000378:metabolism*; D003576:Electron Transport Complex IV / Q000378:metabolism*; D004734:Energy Metabolism / Q000187:drug effects*; D005557:Formaldehyde / Q000633:toxicity*; D009474:Neurons / Q000166:cytology / Q000378:metabolism*; D051381:Rats; D017208:Rats, Wistar
D005557:Formaldehyde; D003576:Electron Transport Complex IV