PMID- 28445779 OWN - NLM STAT- MEDLINE DCOM- 20180326 LR - 20180423 IS - 1878-1519 (Electronic) IS - 1569-9048 (Linking) VI - 242 DP - 2017 Aug TI - The acute cardiorespiratory effects of centrally injected arachidonic acid; the mediation of prostaglandin E, D and F(2alpha). PG - 117-124 LID - S1569-9048(16)30277-4 [pii] LID - 10.1016/j.resp.2017.04.006 [doi] AB - Arachidonic acid (AA), which is released from synaptic membrane phospholipid by neuroreceptor-initiated activation of phospholipase A(2), is abundant in the brain and works as a neurotransmitter and/or neuromodulator in the central nervous system. Recently we reported that centrally injected AA generated pressor and hyperventilation effects by activating thromboxane A(2) (TXA(2)) signaling pathway. The present study was designed to investigate the mediation of other metabolites of AA such as prostaglandin (PG) D, PGE and PGF(2alpha) alongside TXA(2) in the AA-evoked cardiorespiratory effects in anaesthetized rats. Intracerebroventricular (i.c.v.) administration of AA caused pressor, bradycardic and hyperventilation responses by increasing pO(2) and decreasing pCO(2) in adult male anaesthetized Sprague Dawley rats. Pretreatment (i.c.v) with different doses of DP/EP prostanoid receptor antagonist, AH6809 or FP prostanoid receptor antagonist, PGF(2alpha) dimethylamine partially blocked the cardiorespiratory and blood gas changes induced by AA. In conclusion, these data plainly report that central PGD, PGE or PGF(2alpha) might mediate, at least partly, centrally administered AA-evoked cardiorespiratory and blood gas responses. CI - Copyright (c) 2017 Elsevier B.V. All rights reserved. FAU - Erkan, Leman Gizem AU - Erkan LG AD - Department of Physiology, Faculty of Veterinary Medicine, Uludag University, Bursa, 16059, Turkey. FAU - Altinbas, Burcin AU - Altinbas B AD - Department of Physiology, Faculty of Veterinary Medicine, Uludag University, Bursa, 16059, Turkey. FAU - Guvenc, Gokcen AU - Guvenc G AD - Department of Physiology, Faculty of Veterinary Medicine, Uludag University, Bursa, 16059, Turkey. FAU - Aydin, Begum AU - Aydin B AD - Department of Physiology, Faculty of Veterinary Medicine, Uludag University, Bursa, 16059, Turkey. FAU - Niaz, Nasir AU - Niaz N AD - Department of Physiology, Faculty of Veterinary Medicine, Uludag University, Bursa, 16059, Turkey. FAU - Yalcin, Murat AU - Yalcin M AD - Department of Physiology, Faculty of Veterinary Medicine, Uludag University, Bursa, 16059, Turkey. Electronic address: mrtylcn75@gmail.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170423 PL - Netherlands TA - Respir Physiol Neurobiol JT - Respiratory physiology & neurobiology JID - 101140022 RN - 0 (Cardiovascular Agents) RN - 0 (Prostaglandins D) RN - 0 (Prostaglandins E) RN - 0 (Prostaglandins F) RN - 0 (Receptors, Prostaglandin) RN - 0 (Respiratory System Agents) RN - 0 (Xanthones) RN - 27YG812J1I (Arachidonic Acid) RN - 33458-93-4 (6-isopropoxy-9-oxoxanthene-2-carboxylic acid) RN - 57576-52-0 (Thromboxane A2) SB - IM MH - Animals MH - Arachidonic Acid/*pharmacology MH - Blood Gas Analysis MH - Blood Pressure/drug effects/physiology MH - Cardiovascular Agents/*pharmacology MH - Infusions, Intraventricular MH - Male MH - Prostaglandins D/*metabolism MH - Prostaglandins E/*metabolism MH - Prostaglandins F/*metabolism MH - Rats, Sprague-Dawley MH - Receptors, Prostaglandin/antagonists & inhibitors/metabolism MH - Respiration/drug effects MH - Respiratory System Agents/*pharmacology MH - Thromboxane A2/metabolism MH - Time Factors MH - Xanthones/pharmacology OTO - NOTNLM OT - Arachidonic acid OT - Heart rate OT - Intracerebroventricular OT - Mean blood pressure OT - PGD OT - PGE OT - PGF2alpha OT - Partial carbon dioxide pressure OT - Partial oxygen pressure OT - Respiratory minute ventilation OT - Respiratory rate OT - Tidal volume EDAT- 2017/04/27 06:00 MHDA- 2018/03/27 06:00 CRDT- 2017/04/27 06:00 PHST- 2016/11/16 00:00 [received] PHST- 2017/04/17 00:00 [revised] PHST- 2017/04/18 00:00 [accepted] PHST- 2017/04/27 06:00 [pubmed] PHST- 2018/03/27 06:00 [medline] PHST- 2017/04/27 06:00 [entrez] AID - S1569-9048(16)30277-4 [pii] AID - 10.1016/j.resp.2017.04.006 [doi] PST - ppublish SO - Respir Physiol Neurobiol. 2017 Aug;242:117-124. doi: 10.1016/j.resp.2017.04.006. Epub 2017 Apr 23.