Brian E. Leonard

13.2k citations

147 papers · 9.5k indexed · 2 hit papers · h-index 48

Impact in

Biological Psychiatry top 0.02%
- Tryptophan and brain disorders
Behavioral Neuroscience top 0.05%
- Stress Responses and Cortisol

Papers in

Biological Psychiatry 57
- Tryptophan and brain disorders 57
Behavioral Neuroscience 48
- Stress Responses and Cortisol 48

Co-authors: Cai Song Aye-Mu Myint Michaël Maes Thomas J. Connor Yong‐Ku Kim John Kelly Kyoung‐Sae Na Andrew Harkin
Journals: Human Psychopharmacology Clinical and Experimental (11 papers)Progress in Neuro-Psychopharmacology and Biological Psychiatry (11 papers)European Journal of Pharmacology (5 papers)Journal of Psychopharmacology (5 papers)Pharmacology Biochemistry and Behavior (4 papers)
Partner nations: Ireland Netherlands United States

In The Last Decade

Brian E. Leonard

143 papers receiving 9.2k citations

Hit Papers

align trajectories log scale

Mechanistic explanations how cell-mediated immune activation, inflammation and oxidative and nitrosative stress pathways and their sequels and concomitants play a role in the pathophysiology of unipolar depression 2011 · 674 citations

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

it has ≥500 total citations;
it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
it reaches the top citation threshold in at least one of its specific research topics.

2011 Neuroscience & Biobehavioral Reviews
2005 Neuroscience & Biobehavioral Reviews

Peers

Countries citing papers authored by Brian E. Leonard

Since Specialization

Citations

This map shows the geographic impact of Brian E. Leonard's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Brian E. Leonard with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Brian E. Leonard more than expected).

Fields of papers citing papers by Brian E. Leonard

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Brian E. Leonard. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Brian E. Leonard. The network helps show where Brian E. Leonard may publish in the future.

Co-authorship network

The 25 scholars most cited alongside Brian E. Leonard, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Brian E. Leonard Line = papers co-authored together Brian E. Leonard links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	Concerns and barriers surrounding the farm succession process – perception versus reality for beef farmers in Ireland Journal of Rural Studies ·Karl-Henrik Persson, Brian E. Leonard	2024	2
2	Cannabinoids and neuroinflammation: Therapeutic implications Journal of Affective Disorders Reports ·Brian E. Leonard, Feyza Arıcıoğlu	2023	18
3	Malaria, mental disorders, immunity and their inter-relationships - A cross sectional study in a household population in a health and demographic surveillance site in Kenya EBioMedicine ·Rachel Jenkins, John Michael Ong’echa, Caleb Othieno, Linnet Ongeri, Peter Sifuna, Raymond Omollo, Brian E. Leonard, Bernhards Ogutu	2018	6
4	Major Depression as a Neuroprogressive Prelude to Dementia: What Is the Evidence? PubMed ·Brian E. Leonard	2017	28
5	Benzodiazepines: Risks and benefits. A reconsideration Journal of Psychopharmacology ·David S. Baldwin, Katherine J. Aitchison, Alan N. Bateson, Valerie H. Curran, Simon Davies, Brian E. Leonard, David Nutt, David Stephens, Sue Wilson	2013	159
6	Impact of inflammation on neurotransmitter changes in major depression: An insight into the action of antidepressants Progress in Neuro-Psychopharmacology and Biological Psychiatry ·Brian E. Leonard	2013	98
7	Recent advances in psychoneuroimmunology: Inflammation in psychiatric disorders Translational Neuroscience ·Monojit Debnath, Karen Doyle, Camilla Langan, Colm McDonald, Brian E. Leonard, Dara M. Cannon	2011	22
8	General and comparative efficacy and effectiveness of antidepressants in the acute treatment of depressive disorders: a report by the WPA section of pharmacopsychiatry European Archives of Psychiatry and Clinical Neuroscience ·Thomas C. Baghai, Pierre Blier, David S. Baldwin, Michael Bauer, Guy M. Goodwin, Konstantinos Ν. Fountoulakis, Siegfried Kasper, Brian E. Leonard, Ulrik Fredrik Malt, Dan J. Stein, Márcio Versiani, Hans‐Jürgen Möller	2011	37
9	Association of high-sensitivity C-reactive protein with de novo major depression The British Journal of Psychiatry ·Julie A. Pasco, Geoffrey C. Nicholson, Lana J. Williams, Felice N. Jacka, Margaret J. Henry, Mark A. Kotowicz, Hans G. Schneider, Brian E. Leonard, Michael Berk	2010	273
10	Antidepressant Compounds: A Critical Review Siu Wa Tang, Daiga M. Helmeste, Brian E. Leonard	2010	6
11	The Concept of Depression as a Dysfunction of the Immune System Current Immunology Reviews ·Brian E. Leonard	2010	217
12	Changes in the immune system in rodent models of depression The International Journal of Neuropsychopharmacology ·Brian E. Leonard, Cai Song	2002	39
13	New component of the limbic system: Marginal division of the neostriatum that links the limbic system to the basal nucleus of Meynert Journal of Neuroscience Research ·Si Yun Shu, Jia Ze-ying, 光蔵後藤, R. Kiruba Buri, Jun Wang, Brian E. Leonard	2002	11
14	Perineuronal nets of extracellular matrix around hippocampal interneurons resist destruction by activated microglia in trimethyltin-treated rats Brain Research ·Camilo Morán, K Brauer, Wolfgang Härtig, Jens Grosche, Bernadette Earley, Brian E. Leonard, Gert Brückner	2002	41
15	Characterization of d-fenfluramine-induced hypothermia: evidence for multiple sites of action European Journal of Pharmacology ·John F. Cryan, Andrew Harkin, Marie Naughton, John Kelly, Brian E. Leonard	2000	37
16	Stress, Depression and the Activation of the Immune System The World Journal of Biological Psychiatry ·Brian E. Leonard	2000	73
17	Onset of the Effects of the 5-HT1A Antagonist, WAY-100635, Alone, and in Combination With Paroxetine, on Olfactory Bulbectomy and 8-OH-DPAT–Induced Changes in the Rat Pharmacology Biochemistry and Behavior ·John F. Cryan, Caroline McGrath, Brian E. Leonard, Trevor R. Norman	1999	38
18	Combining pindolol and paroxetine in an animal model of chronic antidepressant action—can early onset of action be detected? European Journal of Pharmacology ·John F. Cryan, Caroline McGrath, Brian E. Leonard, Trevor R. Norman	1998	55
19	Effects of an oil enriched in gamma linolenic acid on locomotor activity and behaviour in the Morris Maze, following in utero ethanol exposure in rats Drug and Alcohol Dependence ·Martha McCarthy, Jean‐François Ménez, Brian E. Leonard	1992	9
20	Alcohol as a social teratogen Progress in brain research ·Brian E. Leonard	1988	10

About Brian E. Leonard

Brian E. Leonard is a scholar working on Biological Psychiatry, Behavioral Neuroscience, Cellular and Molecular Neuroscience, Sensory Systems and Neurology, having authored 147 papers that have together received 9.5k indexed citations. Recurring topics across this work include Tryptophan and brain disorders (57 papers), Stress Responses and Cortisol (48 papers), Neurotransmitter Receptor Influence on Behavior (23 papers), Neuroendocrine regulation and behavior (21 papers), Treatment of Major Depression (17 papers), Neuroinflammation and Neurodegeneration Mechanisms (16 papers), Neuroscience and Neuropharmacology Research (16 papers) and Bipolar Disorder and Treatment (12 papers). The work is most often cited by research in Biological Psychiatry (4.1k citations), Behavioral Neuroscience (3.3k citations), Neurology (1.3k citations), Psychiatry and Mental health (1.6k citations) and Sensory Systems (463 citations). Brian E. Leonard has collaborated with scholars based in Ireland, Netherlands and United States. Frequent co-authors include Cai Song, Aye-Mu Myint, Michaël Maes, Thomas J. Connor, Yong‐Ku Kim, John Kelly, Kyoung‐Sae Na, Andrew Harkin, Harry Steinbusch and Simon Scharpé. Their work appears in journals such as Human Psychopharmacology Clinical and Experimental, Progress in Neuro-Psychopharmacology and Biological Psychiatry, European Journal of Pharmacology, Journal of Psychopharmacology and Pharmacology Biochemistry and Behavior.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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