PMID- 19492919 OWN - NLM STAT- MEDLINE DCOM- 20100202 LR - 20161125 IS - 1619-3997 (Electronic) IS - 0300-5577 (Linking) VI - 37 IP - 5 DP - 2009 TI - Nicotine affects the expression of brain-derived neurotrophic factor mRNA and protein in the hippocampus of hypoxic newborn piglets. PG - 553-60 LID - 10.1515/JPM.2009.081 [doi] AB - Brain-derived neurotrophic factor (BDNF) is highly expressed in the developing brain. It has anti-apoptotic abilities, and protects the neonatal brain. In experimental settings in adult animals, pre-treatment with nicotine has shown increased BDNF levels, indicating a possible contribution to nicotine's anti-apoptotic effect. Apoptosis contributes to the development of brain damage in perinatal asphyxia. We examined the effects of nicotine on apoptosis-inducing factor (AIF), caspase-3 and BDNF in the hippocampus of a neonatal piglet model of global hypoxia. Forty-one anesthetized newborn piglets were randomized to one of four groups receiving different infusions after hypoxia (1) nicotine 130 microg/kg/h, 2) 260 microg/kg/h, 3) adrenaline, and 4) saline, all 2.6 mL/kg/h. Four hours after hypoxia they were euthanized. The left hemisphere/hippocampus was examined by histopathology and immunohistochemistry; the right hippocampus was analyzed using real time PCR. There was a significantly higher expression of BDNF mRNA and protein in the animals treated with nicotine 130 microg/kg/h vs. the saline treated group (mRNA P=0.038; protein P=0.009). There were no differences regarding AIF or caspase-3. We conclude that nicotine (130 microg/kg/h), infused over 1 h after global hypoxia in neonatal piglets, increases levels of both BDNF mRNA and protein in the hippocampus. This might imply neuroprotective effects of nicotine in asphyxiated neonates. FAU - Andresen, Jannicke Hanne AU - Andresen JH AD - Department of Pediatric Research, Institute of Surgical Research, Medical Faculty, University of Oslo, Rikshospitalet University Hospital, Oslo, Norway. jannickea@adhb.govt.nz FAU - Loberg, Else Marit AU - Loberg EM FAU - Wright, Marianne AU - Wright M FAU - Goverud, Ingeborg Lostegaard AU - Goverud IL FAU - Stray-Pedersen, Babill AU - Stray-Pedersen B FAU - Saugstad, Ola Didrik AU - Saugstad OD LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Germany TA - J Perinat Med JT - Journal of perinatal medicine JID - 0361031 RN - 0 (Apoptosis Inducing Factor) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (DNA Primers) RN - 0 (Microtubule-Associated Proteins) RN - 0 (Neuroprotective Agents) RN - 0 (RNA, Messenger) RN - 6M3C89ZY6R (Nicotine) RN - EC 3.4.22.- (Caspase 3) SB - IM MH - Animals MH - Animals, Newborn MH - Apoptosis Inducing Factor/genetics MH - Base Sequence MH - Brain-Derived Neurotrophic Factor/*genetics/*metabolism MH - Caspase 3/genetics MH - DNA Primers/genetics MH - Disease Models, Animal MH - Gene Expression/drug effects MH - Hippocampus/*drug effects/*metabolism/pathology MH - Hypoxia/*genetics/*metabolism/pathology MH - Microtubule-Associated Proteins/metabolism MH - Neuroprotective Agents/pharmacology MH - Nicotine/*pharmacology MH - RNA, Messenger/*genetics/*metabolism MH - Swine MH - Tissue Distribution EDAT- 2009/06/06 09:00 MHDA- 2010/02/03 06:00 CRDT- 2009/06/05 09:00 PHST- 2009/06/05 09:00 [entrez] PHST- 2009/06/06 09:00 [pubmed] PHST- 2010/02/03 06:00 [medline] AID - 10.1515/JPM.2009.081 [doi] PST - ppublish SO - J Perinat Med. 2009;37(5):553-60. doi: 10.1515/JPM.2009.081.