Prolonged exposure to ketamine increases brain derived neurotrophic factor levels in developing rat brains.
Prolonged exposure to ketamine, a NMDA receptor antagonist, results in accelerated neurodegeneration and attenuated weight gain in neonatal rats. Suppression of the NMDA receptors by non-competitive antagonists has resulted in conflicting reports of both increased and decreased expression of BDNF. To examine the effect of prolonged ketamine exposure on BDNF expression, we administered saline or ketamine (20 mg/kg) at 90-minute intervals over 9 hours to postnatal day 7 (P7) rat pups. The ketamine-treated rat pups had increased neurodegeneration, BDNF and TrkB cDNA products and protein levels. This increased expression of BDNF may be a response to ketamine-induced injury.
Ibla
Juan C
JC
Department of Anesthesiology, Perioperative and Pain Medicine, Children's Hospital Boston and Harvard Medical School, Boston, Massachusetts 02115, USA.
Hayashi
Hideaki
H
Bajic
Dusica
D
Soriano
Sulpicio G
SG
D000818:Animals; D000831:Animals, Newborn; D019208:Brain-Derived Neurotrophic Factor / Q000187:drug effects* / Q000378:metabolism; D018076:DNA, Complementary / Q000187:drug effects / Q000378:metabolism; D004334:Drug Administration Schedule; D018691:Excitatory Amino Acid Antagonists / Q000008:administration & dosage / Q000633:toxicity*; D005786:Gene Expression Regulation / Q000187:drug effects; D007649:Ketamine / Q000008:administration & dosage / Q000633:toxicity*; D051381:Rats; D017207:Rats, Sprague-Dawley; D020813:Receptor, trkB / Q000187:drug effects* / Q000378:metabolism; D013997:Time Factors
D019208:Brain-Derived Neurotrophic Factor; D018076:DNA, Complementary; D018691:Excitatory Amino Acid Antagonists; D007649:Ketamine; D020813:Receptor, trkB