PMID- 24361869 OWN - NLM STAT- MEDLINE DCOM- 20141014 LR - 20220408 IS - 1096-0929 (Electronic) IS - 1096-0929 (Linking) VI - 138 IP - 1 DP - 2014 Mar TI - Paracetamol (acetaminophen) administration during neonatal brain development affects cognitive function and alters its analgesic and anxiolytic response in adult male mice. PG - 139-47 LID - 10.1093/toxsci/kft329 [doi] AB - Paracetamol (acetaminophen) is one of the most commonly used drugs for the treatment of pain and fever in children, both at home and in the clinic, and is now also found in the environment. Paracetamol is known to act on the endocannabinoid system, involved in normal development of the brain. We examined if neonatal paracetamol exposure could affect the development of the brain, manifested as adult behavior and cognitive deficits, as well as changes in the response to paracetamol. Ten-day-old mice were administered a single dose of paracetamol (30 mg/kg body weight) or repeated doses of paracetamol (30 + 30 mg/kg body weight, 4h apart). Concentrations of paracetamol and brain-derived neurotrophic factor (BDNF) were measured in the neonatal brain, and behavioral testing was done when animals reached adulthood. This study shows that acute neonatal exposure to paracetamol (2 x 30 mg) results in altered locomotor activity on exposure to a novel home cage arena and a failure to acquire spatial learning in adulthood, without affecting thermal nociceptive responding or anxiety-related behavior. However, mice neonatally exposed to paracetamol (2 x 30 mg) fail to exhibit paracetamol-induced antinociceptive and anxiogenic-like behavior in adulthood. Behavioral alterations in adulthood may, in part, be due to paracetamol-induced changes in BDNF levels in key brain regions at a critical time during development. This indicates that exposure to and presence of paracetamol during a critical period of brain development can induce long-lasting effects on cognitive function and alter the adult response to paracetamol in mice. FAU - Viberg, Henrik AU - Viberg H AD - * Department of Environmental Toxicology. FAU - Eriksson, Per AU - Eriksson P FAU - Gordh, Torsten AU - Gordh T FAU - Fredriksson, Anders AU - Fredriksson A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131221 PL - United States TA - Toxicol Sci JT - Toxicological sciences : an official journal of the Society of Toxicology JID - 9805461 RN - 0 (Analgesics, Non-Narcotic) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 362O9ITL9D (Acetaminophen) SB - IM MH - Acetaminophen/pharmacokinetics/*toxicity MH - Analgesics, Non-Narcotic/pharmacokinetics/*toxicity MH - Animals MH - Animals, Newborn MH - Anxiety/*chemically induced/metabolism MH - Behavior, Animal/*drug effects MH - Brain/*drug effects/growth & development/metabolism MH - Brain-Derived Neurotrophic Factor/metabolism MH - Chromatography, High Pressure Liquid MH - Cognition Disorders/*chemically induced MH - Enzyme-Linked Immunosorbent Assay MH - Male MH - Maze Learning/drug effects MH - Mice MH - Motor Activity/drug effects MH - Nociception/drug effects MH - Spatial Behavior/drug effects OTO - NOTNLM OT - behavior OT - developmental neurotoxicity OT - neonatal OT - paracetamol (acetaminophen). EDAT- 2013/12/24 06:00 MHDA- 2014/10/15 06:00 CRDT- 2013/12/24 06:00 PHST- 2013/12/24 06:00 [entrez] PHST- 2013/12/24 06:00 [pubmed] PHST- 2014/10/15 06:00 [medline] AID - kft329 [pii] AID - 10.1093/toxsci/kft329 [doi] PST - ppublish SO - Toxicol Sci. 2014 Mar;138(1):139-47. doi: 10.1093/toxsci/kft329. Epub 2013 Dec 21.