Timothy O’Brien

18.0k citations

384 papers · 13.1k · h-index 64

Impact in

Genetics top 0.1%
- Mesenchymal stem cell research
- Virus-based gene therapy research
Aging top 1%

Papers in

Molecular Biology 115
- RNA Interference and Gene Delivery 29
- Angiogenesis and VEGF in Cancer 24
- Pluripotent Stem Cells Research 19
Surgery 75
- Tissue Engineering and Regenerative Medicine 25

Co-authors: Frank Barry (49 shared papers)Mary Murphy (21 shared papers)Abhay Pandit (27 shared papers)Zvonimir S. Katušić (33 shared papers)Michael J. Kerin (11 shared papers)Aaron Liew (20 shared papers)Róisín M. Dwyer (9 shared papers)Peter Dockery (22 shared papers)
Journals: Stem Cell Research & Therapy (18 papers)Stem Cell Research (15 papers)Mayo Clinic Proceedings (12 papers)Stem Cells (7 papers)Cytotherapy (7 papers)
Partner nations: Ireland United States China

In The Last Decade

Timothy O’Brien

377 papers receiving 12.7k citations

Peers

Countries citing papers authored by Timothy O’Brien

Since Specialization

Citations

This map shows the geographic impact of Timothy O’Brien'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 Timothy O’Brien with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Timothy O’Brien more than expected).

Fields of papers citing papers by Timothy O’Brien

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Timothy O’Brien. 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 Timothy O’Brien. The network helps show where Timothy O’Brien may publish in the future.

Co-authors

The 25 scholars most cited alongside Timothy O’Brien, 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 Timothy O’Brien Line = papers co-authored together Timothy O’Brien links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 384 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Monocyte Chemotactic Protein-1 Secreted by Primary Breast Tumors Stimulates Migration of Mesenchymal Stem Cells Clinical Cancer Research ·Róisín M. Dwyer, S.M. Potter-Beirne, Kate Harrington, Aoïfe Lowery, E. Hennessy, Mary Murphy, Frank Barry, Timothy O’Brien, Michael J. Kerin	2007	354
2	Potential role of mesenchymal stem cells (MSCs) in the breast tumour microenvironment: stimulation of epithelial to mesenchymal transition (EMT) Breast Cancer Research and Treatment ·Fiachra Martin, Róisín M. Dwyer, John Kelly, Sonja Khan, Mary Murphy, Catherine Curran, Nicola Miller, E. Hennessy, Peter Dockery, Frank Barry, Timothy O’Brien, Michael J. Kerin	2010	248
3	Immunogenicity of allogeneic mesenchymal stem cells Journal of Cellular and Molecular Medicine ·Sabine Schu, Mikhail Nosov, Lisa O’Flynn, Georgina Shaw, Oliver Treacy, Frank Barry, Mary Murphy, Timothy O’Brien, Thomas Ritter	2011	247
4	Mesenchymal stem cells enhance recovery and repair following ventilator-induced lung injury in the rat Thorax ·Gerard F. Curley, Mairéad Hayes, Bilal Ansari, Georgina Shaw, Aideen E. Ryan, Frank Barry, Timothy O’Brien, Daniel O’Toole, John G. Laffey	2011	210
5	Employing mesenchymal stem cells to support tumor-targeted delivery of extracellular vesicle (EV)-encapsulated microRNA-379 Oncogene ·Killian P. O’Brien, Sonja Khan, Katie Gilligan, Haroon Zafar, Pierce Lalor, Claire L. Glynn, Cathal O’Flatharta, Helen Ingoldsby, Peter Dockery, Áine de Bhulbh, J. R. Schweber, Keziah John, Martin J. Leahy, Mary Murphy, William M. Gallagher, Timothy O’Brien, Michael J. Kerin, Róisín M. Dwyer	2018	189
6	Differential miRNA Expression in Omental Adipose Tissue and in the Circulation of Obese Patients Identifies Novel Metabolic Biomarkers The Journal of Clinical Endocrinology & Metabolism ·Helen Heneghan, Nicola Miller, O. J. McAnena, Timothy O’Brien, Michael J. Kerin	2011	175
7	Effects of Immunosuppressants on Receptor Activator of NF-κB Ligand and Osteoprotegerin Production by Human Osteoblastic and Coronary Artery Smooth Muscle Cells Biochemical and Biophysical Research Communications ·Lorenz C. Hofbauer, Chaoxiang Shui, B. Lawrence Riggs, Colin R. Dunstan, Thomas C. Spelsberg, Timothy O’Brien, Sundeep Khosla	2001	175
8	ER stress contributes to ischemia-induced cardiomyocyte apoptosis Biochemical and Biophysical Research Communications ·Éva Szegezdi, Angela Duffy, Martin E. O’Mahoney, Susan E. Logue, Louise A. Mylotte, Timothy O’Brien, Afshin Samali	2006	175
9	Hyperlipidemia in Patients With Primary and Secondary Hypothyroidism Mayo Clinic Proceedings ·Timothy O’Brien, Seán F. Dinneen, Peter C. O'Brien, Pasquale Palumbo	1993	161
10	Hyperlipidemia and Diabetes Mellitus Mayo Clinic Proceedings ·Timothy O’Brien, Tu T. Nguyen, Bruce R. Zimmerman	1998	159
11	Human mesenchymal stromal cells decrease the severity of acute lung injury induced by E. coli in the rat Thorax ·James Devaney, Shahd Horie, Claire Masterson, Stephen J. Elliman, Frank Barry, Timothy O’Brien, Gerard F. Curley, D. O'Toole, John G. Laffey	2015	158
12	Metabolic Flexibility Permits Mesenchymal Stem Cell Survival in an Ischemic Environment Stem Cells ·Louise A. Mylotte, Angela Duffy, Mary Murphy, Timothy O’Brien, Afshin Samali, Frank Barry, Éva Szegezdi	2008	152
13	Time-lapse imaging and cell-specific expression profiling reveal dynamic branching and molecular determinants of a multi-dendritic nociceptor in C. elegans Developmental Biology ·Cody J. Smith, Joseph D. Watson, William C. Spencer, Timothy O’Brien, Byeong Cha, Adi Albeg, Millet Treinin, David M. Miller	2010	150
14	Overexpression of HER-2/neu in uterine serous papillary cancer. PubMed ·Alessandro D. Santin, Stefania Bellone, Murat Gökden, Michela Palmieri, Donna Dunn, Jamshed Agha, Juan J. Roman, Laura F. Hutchins, Sërgio Pecorelli, Timothy O’Brien, Martin J. Cannon, Groesbeck P. Parham	2002	143
15	Current tissue engineering and novel therapeutic approaches to axonal regeneration following spinal cord injury using polymer scaffolds Respiratory Physiology & Neurobiology ·Nicolas N. Madigan, Siobhán S. McMahon, Timothy O’Brien, Michael J. Yaszemski, Anthony J. Windebank	2009	137
16	Gene Transfer into Rat Mesenchymal Stem Cells: A Comparative Study of Viral and Nonviral Vectors Stem Cells and Development ·Jill McMahon, Simon Conroy, Mark Lyons, Udo Greiser, Ciara A. O'Shea, Pádraig Strappe, Linda Howard, Mary Murphy, Frank Barry, Timothy O’Brien	2006	136
17	Therapeutic potential for mesenchymal stem cell transplantation in critical limb ischemia Stem Cell Research & Therapy ·Aaron Liew, Timothy O’Brien	2012	132
18	The impact of chronic kidney disease on developed countries from a health economics perspective: A systematic scoping review PLoS ONE ·Sarah Elshahat, Paul Cockwell, Alexander P. Maxwell, Matthew D. Griffin, Timothy O’Brien, Ciarán O’Neill	2020	132
19	Bone Marrow–Derived Mesenchymal Stem Cells Promote Angiogenic Processes in a Time- and Dose-Dependent Manner In Vitro Tissue Engineering Part A ·Garry P. Duffy, Tabassum Ahsan, Timothy O’Brien, Frank Barry, Robert M. Nerem	2009	118
20	Prospective Evaluation of Roux-en-Y Gastric Bypass as Primary Operation for Medically Complicated Obesity Mayo Clinic Proceedings ·Bruno M. Balsiger, Frank P. Kennedy, Haitham S. Abu-Lebdeh, Maria L. Collazo–Clavell, Michael D. Jensen, Timothy O’Brien, Donald D. Hensrud, Seán F. Dinneen, Geoffrey B. Thompson, Florencia G. Que, Donald E. Williams, Matthew M. Clark, Jeanne E. Grant, Marsha S. Frick, Roger A. Mueller, (unknown), Michael G. Sarr	2000	118

About Timothy O’Brien

Timothy O’Brien is a scholar working on Molecular Biology, Surgery, Genetics, Genetics and Endocrinology, Diabetes and Metabolism, having authored 384 papers that have together received 13.1k indexed citations. Recurring topics across this work include Mesenchymal stem cell research (67 papers), Virus-based gene therapy research (35 papers), Nitric Oxide and Endothelin Effects (30 papers), RNA Interference and Gene Delivery (29 papers), Electrospun Nanofibers in Biomedical Applications (27 papers), Tissue Engineering and Regenerative Medicine (25 papers), Angiogenesis and VEGF in Cancer (24 papers) and Pluripotent Stem Cells Research (19 papers). The work is most often cited by research in Genetics (2.6k citations), Aging (173 citations), Biomaterials (1.1k citations), Rehabilitation (452 citations) and Endocrinology, Diabetes and Metabolism (1.1k citations). Timothy O’Brien has collaborated with scholars based in Ireland, United States and China. Frequent co-authors include Frank Barry, Mary Murphy, Abhay Pandit, Zvonimir S. Katušić, Michael J. Kerin, Aaron Liew, Róisín M. Dwyer, Peter Dockery, Afshin Samali and Tu T. Nguyen. Their work appears in journals such as Stem Cell Research & Therapy, Stem Cell Research, Mayo Clinic Proceedings, Stem Cells and Cytotherapy.

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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