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Professor Declan Mc Loughlin

Research Professor of Psychiatry (Psychiatry)

Research Professor of Psychiatry (Trinity Inst. of Neurosciences (TCIN))

Prof McLoughlin took up the new post of Research Professor of Psychiatry on July 1, 2007. Prior to this I was a Senior Lecturer in the MRC Centre for Neurodegeneration Research at the Institute of Psychiatry, King's College London.
Ryan KM, Allers KA, McLoughlin DM, Harkin A., Tryptophan metabolite concentrations in depressed patients before and after electroconvulsive therapy., Brain, Behavior and Immunity, 83, 2020, p153 - 162, Journal Article, PUBLISHED  DOI
Andrew Harkin, Declan M. McLoughlin, Ketamine and depression: A special kase for kynurenic acid?, Brain, Behavior, and Immunity, 2019, Journal Article, PUBLISHED
Karen M. Ryan, Declan M. McLoughlin, Peripheral blood GILZ mRNA levels in depression and following electroconvulsive therapy, Psychoneuroendocrinology, 2019, Journal Article, PUBLISHED
Read J, Cunliffe S, Jauhar S, McLoughlin DM., Should we stop using electroconvulsive therapy?, BMJ (Clinical research ed.), 364, 2019, pk5233 , Journal Article, PUBLISHED  DOI
O'Reilly H, Hagerty A, O'Donnell S, Farrell A, Hartnett D, Murphy E, Kehoe E, Agyapong V, McLoughlin DM, Farren C., Alcohol Use Disorder and Comorbid Depression: A Randomized Controlled Trial Investigating the Effectiveness of Supportive Text Messages in Aiding Recovery., Alcohol and alcoholism (Oxford, Oxfordshire), 54, (5), 2019, p551-558 , Journal Article, PUBLISHED  DOI
Ryan KM, McLoughlin DM., Telomere length in depression and association with therapeutic response to electroconvulsive therapy and cognitive side-effects., Psychological medicine, 2019, p1-11 , Journal Article, PUBLISHED  DOI
Ryan KM, Poelz L, McLoughlin DM., Low Circulating Levels of GR, FKBP5, and SGK1 in Medicated Patients With Depression Are Not Altered by Electroconvulsive Therapy., The journal of ECT, 2019, Journal Article, PUBLISHED  DOI
Hartnett Y, Drakeford C, Dunne L, McLoughlin DM, Kennedy N., Physician, heal thyself: a cross-sectional survey of doctors' personal prescribing habits., Journal of medical ethics, 2019, Journal Article, PUBLISHED  DOI
Soda T, McLoughlin DM, Clark SR, Oltedal L, Kessler U, Haavik J, Bousman C, Smith DJ, Bioque M, Clements CC, Loo C, Vila-Rodriguez F, Minelli A, Mickey BJ, Milev R, Docherty AR, Langan Martin J, Achtyes ED, Arolt V, Redlich R, Dannlowski U, Cardoner N, Clare E, Craddock N, Di Florio A, Dmitrzak-Weglarz M, Forty L, Gordon-Smith K, Husain M, Ingram WM, Jones L, Jones I, Juruena M, Kirov G, Landén M, Müller DJ, Nordensköld A, Pålsson E, Paul M, Permoda A, Pliszka B, Rea J, Schubert KO, Sonnen JA, Soria V, Stageman W, Takamiya A, Urretavizacaya M, Watson S, Zavorotny M, Young AH, Vieta E, Rybakowski JK, Gennarelli M, Zandi PP, Sullivan PF, Baune BT., International Consortium on the Genetics of Electroconvulsive Therapy and Severe Depressive Disorders (Gen-ECT-ic)., European archives of psychiatry and clinical neuroscience, 2019, Journal Article, PUBLISHED  DOI
Kolshus E, Jelovac A, McLoughlin DM, Bitemporal v. high-dose right unilateral electroconvulsive therapy for depression: a systematic review and meta-analysis of randomized controlled trials - CORRIGENDUM., Psychological medicine, 2018, Journal Article, PUBLISHED

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Semkovska M, McLoughlin DM , Retrograde autobiographical amnesia following ECT: on the difficulty of finding the baby and clearing murky bathwater, J ECT, 30, (3), 2014, p187 - 188, Journal Article, PUBLISHED
Dunne RA, McLoughlin DM, Physical treatments, Medicine , 40, 2012, p672 - 673, Notes: [ ], Journal Article, PUBLISHED
McLoughlin, DM, Vagus rules still apply., Psychological Medicine, 38, (5), 2008, p625 - 627, Journal Article, PUBLISHED
McLoughlin, DM, Review: repetitive transcranial magnetic stimulation is of unknown effectiveness in people with depression., Evidence-Based Mental Health, 6, (4), 2003, p118 - 118, Journal Article, PUBLISHED
Lovestone S, McLoughlin D., Alzheimer's disease: molecular biology and the quest for a treatment. , Care of the Elderly, 6, 1994, p149-152 , Journal Article, PUBLISHED
Cigeroglu YB, McLoughlin D., Psychotherapy training in Turkey, 1994, - 650-651, Miscellaneous, PUBLISHED


I have been investigating the neuronal signalling function of the Alzheimer's disease amyloid precursor protein (APP) and was among the first to identify the FE65 and X11 adaptor proteins as APPbinding partners. To study their functions in vivo, we have made X11 transgenic mice and have demonstrated that the X11s regulate APP processing and reduce cerebral Ab production and deposition. The neuronal X11 proteins are therefore novel therapeutic targets for Alzheimer's disease. I am now leading a research group studying behavioural and electrophysiological effects of X11- mediated reduction in cerebral Ab in an Alzheimer's animal model. On the clinical side, I have also been leading randomised controlled trials of therapeutic neuromodulation techniques (e.g. transcranial magnetic stimulation, electroconvulsive therapy) for neuropsychiatric disorders such as depression and schizophrenia. In St Patrick's Hospital and TCD, we are about to start a 5-year research programme called the EFFECT-Dep Study (enhancing the effectiveness of electroconvulsive therapy in severe depression and understanding its molecular mechanism of action). This programme is supported by a HRB Translational Research Award and its purpose is to improve ECT practice and use it to interrogate the molecular neurobiology of depression. We will carry out a definitive randomised controlled trial comparing bilateral and high-dose unilateral ECT, recruiting 140 patients with severe depression. We will also use an animal model of ECT treatment to characterise changes in global protein expression (i.e. the proteome) in both brain and blood plasma and also carry out similar studies using plasma from depressed patients recruited into the clinical trial. The results of these studies will improve clinical ECT and also help us understand better the molecular mechanism of action of ECT, as well as antidepressant drugs, and lead to identification of candidate peripheral biomarkers for depression, treatment response and depression relapse.