PMID- 31626851 OWN - NLM STAT- MEDLINE DCOM- 20210429 LR - 20210429 IS - 1872-7549 (Electronic) IS - 0166-4328 (Linking) VI - 378 DP - 2020 Jan 27 TI - Dopamine D1 receptor agonism induces dynamin related protein-1 inhibition to improve mitochondrial biogenesis and dopaminergic neurogenesis in rat model of Parkinson's disease. PG - 112304 LID - S0166-4328(19)30978-7 [pii] LID - 10.1016/j.bbr.2019.112304 [doi] AB - Dopamine (DA) neurotransmitter act on dopamine receptors (D1-D5) to regulate motor functions, reward, addiction and cognitive behavior. The depletion of DA in midbrain due to degeneration of nigral dopaminergic (DAergic) neurons leads to Parkinson's disease (PD). DA agonist and levodopa (L-DOPA) are the only therapies used for symptomatic relief in PD. However, the role of DA receptors in PD pathogenesis and how they are associated with mitochondrial functions and DAergic neurogenesis is still not known. Here, we investigated the mechanistic aspect of DA D1 receptor mediated control of DAergic neurogenesis, motor behavior and mitochondrial functions in rat PD model. The pharmacological activation of D1 receptors markedly improved motor deficits, mitochondrial biogenesis, ATP levels, mitochondrial membrane potential and defended nigral DAergic neurons against 6-hydroxydopamine (6-OHDA) induced neurotoxicity in adult rats. However, the D1 agonist mediated effects were abolished following D1 receptor antagonist treatment in 6-OHDA lesioned rats. Interestingly, pharmacological inhibition of dynamin related protein-1 (Drp-1) by Mdivi-1 in D1 antagonist treated PD rats, significantly restored behavioral deficits, mitochondrial functions, mitochondrial biogenesis and increased the number of newborn DAergic neurons in substantia nigra pars compacta (SNpc). Drp-1 inhibition mediated neuroprotective effects in PD rats were associated with increased level of protein kinase-B/Akt and extracellular-signal-regulated kinase (ERK). Taken together, our data suggests that dopamine D1 receptor mediated reduction in mitochondrial fission and enhanced DAergic neurogenesis may involve Drp-1 inhibition which led to improved behavioral recovery in PD rats. CI - Copyright (c) 2019 Elsevier B.V. All rights reserved. FAU - Mishra, Akanksha AU - Mishra A AD - Division of Neuroscience and Ageing biology, CSIR-Central Drug Research Institute, Lucknow (U.P.), India; Academy of Scientific and Innovative Research, New Delhi, India. FAU - Singh, Sonu AU - Singh S AD - Division of Neuroscience and Ageing biology, CSIR-Central Drug Research Institute, Lucknow (U.P.), India; L4078, Department of Neuroscience, School of Medicine, University of Connecticut (Uconn) Health Center, 263 Farmington Avenue. FAU - Tiwari, Virendra AU - Tiwari V AD - Division of Neuroscience and Ageing biology, CSIR-Central Drug Research Institute, Lucknow (U.P.), India; Academy of Scientific and Innovative Research, New Delhi, India. FAU - Bano, Shameema AU - Bano S AD - Division of Neuroscience and Ageing biology, CSIR-Central Drug Research Institute, Lucknow (U.P.), India. FAU - Shukla, Shubha AU - Shukla S AD - Division of Neuroscience and Ageing biology, CSIR-Central Drug Research Institute, Lucknow (U.P.), India; Academy of Scientific and Innovative Research, New Delhi, India. Electronic address: shubha_shukla@cdri.res.in. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20191015 PL - Netherlands TA - Behav Brain Res JT - Behavioural brain research JID - 8004872 RN - 0 (Dopamine Agonists) RN - 0 (Dopamine Antagonists) RN - 0 (Receptors, Dopamine D1) RN - 8HW4YBZ748 (Oxidopamine) RN - EC 3.6.5.5 (Dnm1l protein, rat) RN - EC 3.6.5.5 (Dynamins) SB - IM MH - Animals MH - Behavior, Animal/*drug effects MH - Disease Models, Animal MH - Dopamine Agonists/administration & dosage/*pharmacology MH - Dopamine Antagonists/pharmacology MH - Dopaminergic Neurons/*drug effects MH - Dynamins/antagonists & inhibitors/*drug effects MH - Locomotion/*drug effects MH - Male MH - Mitochondria/*drug effects MH - Neurogenesis/*drug effects MH - *Organelle Biogenesis MH - Oxidopamine/toxicity MH - Parkinson Disease/*drug therapy MH - Rats MH - Rats, Sprague-Dawley MH - Receptors, Dopamine D1/*agonists/antagonists & inhibitors OTO - NOTNLM OT - Dopamine receptor OT - Dynamin related protein-1 (Drp-1) OT - Mitochondrial biogenesis OT - Neurogenesis OT - Parkinson's disease EDAT- 2019/10/19 06:00 MHDA- 2021/04/30 06:00 CRDT- 2019/10/19 06:00 PHST- 2019/06/24 00:00 [received] PHST- 2019/09/26 00:00 [revised] PHST- 2019/10/14 00:00 [accepted] PHST- 2019/10/19 06:00 [pubmed] PHST- 2021/04/30 06:00 [medline] PHST- 2019/10/19 06:00 [entrez] AID - S0166-4328(19)30978-7 [pii] AID - 10.1016/j.bbr.2019.112304 [doi] PST - ppublish SO - Behav Brain Res. 2020 Jan 27;378:112304. doi: 10.1016/j.bbr.2019.112304. Epub 2019 Oct 15.