PMID- 31376054 OWN - NLM STAT- MEDLINE DCOM- 20200120 LR - 20200225 IS - 1573-6903 (Electronic) IS - 0364-3190 (Linking) VI - 44 IP - 9 DP - 2019 Sep TI - NGF, BDNF and Arc mRNA Expression in the Hippocampus of Rats After Administration of Morphine. PG - 2139-2146 LID - 10.1007/s11064-019-02851-z [doi] AB - Morphine can influence immediate early genes (IEG) of activity-regulated cytoskeletal-associated protein (Arc) and brain-derived neurotrophic factor (BDNF) which are activated in response to physiological stimuli during learning, as well as the nerve growth factor (NGF) gene which increases the expression of several IEGs for memory formation. The purpose of the current study was first to evaluate the effect of acute (1-day) and subchronic (15-days) morphine administration on memory retrieval of rats and second to determine the hippocampal expression of NGF, BDNF and Arc genes as potential contributors in the observed effects in each setting. The effects of morphine (intraperitoneal, 10, 15 and 20 mg/kg) on memory function and gene expression were assessed using inhibitory avoidance test and real-time polymerase chain reaction, respectively. We found that a single dose of morphine at the highest dose of 20 mg/kg decreases the post-training step-through-latency, while repeated administration of the same dose for 15 successive days increases this indicator of memory retrieval. We did not detect a significant change in the hippocampal expression of Arc, BDNF or NGF genes after a single episode of morphine treatment. However, subchronic morphine administration (15 and 20 mg/kg) increased the expression of Arc and BDNF genes in a dose dependent manner. A higher mRNA expression for the NGF was observed at the higher dose of 20 mg/kg. We hypothesize that the subchronic effects were morphine-induced behavioral sensitization which may have been enhanced through increased hippocampal Arc expression. FAU - Rouhani, Fatemeh AU - Rouhani F AD - Department of Biology, Parand Branch, Islamic Azad University, Parand, Iran. FAU - Khodarahmi, Parvin AU - Khodarahmi P AUID- ORCID: 0000-0001-6252-4254 AD - Department of Biology, Parand Branch, Islamic Azad University, Parand, Iran. khodarahmiparvin@yahoo.com. FAU - Naseh, Vahid AU - Naseh V AD - Department of Biology, Parand Branch, Islamic Azad University, Parand, Iran. LA - eng PT - Journal Article DEP - 20190802 PL - United States TA - Neurochem Res JT - Neurochemical research JID - 7613461 RN - 0 (Bdnf protein, rat) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Cytoskeletal Proteins) RN - 0 (Nerve Tissue Proteins) RN - 0 (RNA, Messenger) RN - 0 (activity regulated cytoskeletal-associated protein) RN - 76I7G6D29C (Morphine) RN - 9061-61-4 (Nerve Growth Factor) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/genetics MH - Cytoskeletal Proteins/genetics MH - Gene Expression/*drug effects MH - Genes, Immediate-Early/drug effects MH - Hippocampus/*metabolism MH - Learning/*drug effects MH - Male MH - Memory/*drug effects MH - Morphine/*pharmacology MH - Nerve Growth Factor/genetics MH - Nerve Tissue Proteins/genetics MH - RNA, Messenger/*metabolism MH - Rats, Wistar OTO - NOTNLM OT - Arc gene OT - BDNF gene OT - Memory OT - Morphine OT - NGF gene OT - Rat EDAT- 2019/08/04 06:00 MHDA- 2020/01/21 06:00 CRDT- 2019/08/04 06:00 PHST- 2019/03/27 00:00 [received] PHST- 2019/07/29 00:00 [accepted] PHST- 2019/07/26 00:00 [revised] PHST- 2019/08/04 06:00 [pubmed] PHST- 2020/01/21 06:00 [medline] PHST- 2019/08/04 06:00 [entrez] AID - 10.1007/s11064-019-02851-z [pii] AID - 10.1007/s11064-019-02851-z [doi] PST - ppublish SO - Neurochem Res. 2019 Sep;44(9):2139-2146. doi: 10.1007/s11064-019-02851-z. Epub 2019 Aug 2.