Browsing School of Medicine by Author "Fitzgerald, Seán"
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Acute ischemic stroke secondary to cardiac embolus of a ‘foreign body’ material after a redo sternotomy for mitral valve replacement: A case report
Fitzgerald, Seán; Rizvi, Asim; Dai, Daying; Williamson, Eric E.; Lanzino, Giuseppe; Doyle, Karen M.; Kallmes, David F.; Brinjikji, Waleed (SAGE Publications, 2018-11-14)Cardiac surgery has been shown to be associated with increased risk of acute ischemic stroke. This report presents a case of a successful mechanical embolectomy procedure to treat a patient for an acute ischemic stroke, ... -
Does bridging therapy in mechanical thrombectomy increase recanalization rates in ischemic stroke patients affected by acute large vessel occlusion?
Silva Santos, Andreia M.; Rossi, Rosanna; Pandit, Abhay; Fitzgerald, Seán; Mereuta, Oana Madalina; Douglas, Andrew; Thornton, John; Brennan, Paul; Power, Sarah; O’Hare, Alan; Rentzos, Alexandros; Ceder, Erik; Tatlisumak, Turgut; Jood, Katarina; Redfors, Petra; Nordanstig, Annika; Duffy, Sharon; Gilvarry, Michael; McCarthy, Ray; Doyle, Karen M. (SAGE Publications, 2019-05-22)Both intravenous thrombolysis with tissue plasminogen activator (IV-rtPA) and mechanical thrombectomy (MT) increase recanalization rates. We assessed if bridging-therapy (the concomitant use of rtPA and MT) could increase ... -
Don't blame it all on antibodies--The need for exhaustive characterisation, appropriate handling, and addressing the issues that affect specificity
O'Kennedy, Richard; Fitzgerald, Seán; Murphy, Caroline (Elsevier, 2017-01-30)Recently there have been numerous very thought-provoking reports describing many issues relating to the overall quality of antibodies that are currently available. It appears that multiple major clinical and other analytical ... -
Fatty acid binding protein expression in clots retrieved by mechanical thrombectomy from patients with acute ischaemic stroke
Mereuta, Oana Madalina; Fitzgerald, Seán; Douglas, Andrew; Rossi, Rosanna; Silva Santos, Andreia M.; Pandit, Abhay; Thornton, John; O'Hare, Alan; Power, Sarah; Brennan, Paul; Rentzos, Alexandros; Tatlisumak, Turgut; Gunnarsson, Thorsteinn; Davidson, Maria; Brederlau, Anke; Allardt, Arne; Brinjikji, Waleed; Kallmes, David F.; Doyle, Karen M. (Sage Publications, 2019-05-22)Introduction: Lipid accumulation and inflammation are considered hallmarks of the unstable atherosclerotic plaque. In particular, adipocyte fatty acid binding protein (FABP4) expression within the plaque is associated ... -
High CerS5 expression levels associate with reduced patient survival and transition from apoptotic to autophagy signalling pathways in colorectal cancer
Fitzgerald, Seán; Sheehan, Katherine M.; Espina, Virginia; O'Grady, Anthony; Cummins, Robert; Kenny, Dermot; Liotta, Lance; O'Kennedy, Richard; Kay, Elaine W.; Kijanka, Gregor S. (Wiley, 2014-11-13)Ceramide synthase 5 is involved in the de novo synthesis of ceramide, a sphingolipid involved in cell death and proliferation. In this study, we investigated the role of ceramide synthase 5 in colorectal cancer by examining ... -
Histological characterization of white clots retrieved by mechanical thrombectomy from acute ischemic stroke patients
Mereuta, Oana Madalina; Fitzgerald, Seán; Douglas, Andy; Rossi, Rosanna; Silva Santos, Andreia M.; Pandit, Abhay; Thornton, John; Rentzos, Alexandros; Tatlisumak, Turgut; Doyle, Karen M. (SAGE Publications, 2019-01-01)Introduction: Advances in mechanical thrombectomy have created the unique opportunity to study the acute ischemic stroke clot material. However, there is a lack of uniformity in the histopathologic characterization of ... -
Histological stroke clot analysis after thrombectomy: Technical aspects and recommendations
Staessens, S.; Fitzgerald, Seán; Andersson, T.; Clarencon, F.; Denorme, F.; Gounis, M. J.; Hacke, W.; Liebeskind, D. S.; Szikora, I.; van Es, A. C. G. M.; Brinjikji, W.; Doyle, Karen M.; De Meyer, S. F. (SAGE Publications, 2019-11-03)The recent advent of endovascular procedures has created the unique opportunity to collect and analyze thrombi removed from cerebral arteries, instigating a novel subfield in stroke research. Insights into thrombus ... -
The impact of occlusion location and bridging therapy in patients affected by acute ischemic stroke in determining the total number of passes required to remove the clot and the final revascularization outcome
Rossi, Rosanna; Fitzgerald, Seán; Mereuta, Oana Madalina; Douglas, Andrew; Pandit, Abhay; Szikora, István; Tsivgoulis, Georgios; Psychogios, Klearchos; Murphy, Blathnaid; Brennan, Paul; Power, Sarah; O'Hare, Alan; Thornton, John; Rentzos, Alexandros; Tatlisumak, Turgut; Doyle, Karen M. (WFITN (World Federation of Interventional and Therapeutic Neuroradiology), 2019-10-21)Purpose Our purpose was to assess the impact of occlusion location in patients suffering from Acute Ischemic Stroke (AIS) on the total number of passes (attempts) necessary to retrieve the clot and on final revascularization ... -
Orbit image analysis machine learning software can be used for the histological quantification of acute ischemic stroke blood clots
Fitzgerald, Seán; Wang, Shunli; Dai, Daying; Murphree Jr, Dennis H.; Pandit, Abhay; Douglas, Andrew; Rizvi, Asim; Kadirvel, Ramanathan; Gilvarry, Michael; McCarthy, Ray; Stritt, Manuel; Gounis, Matthew J.; Brinjikji, Waleed; Kallmes, David F.; Doyle, Karen M. (Public Library of Science, 2019-12-05)Our aim was to assess the utility of a novel machine learning software (Orbit Image Analysis) in the histological quantification of acute ischemic stroke (AIS) clots. We analyzed 50 AIS blood clots retrieved using mechanical ... -
Platelet-rich emboli are associated with von Willebrand factor levels and have poorer revascularization outcomes
Douglas, Andrew; Fitzgerald, Seán; Mereuta, Oana Madalina; Rossi, Rosanna; O'Leary, Sean; Pandit, Abhay; McCarthy, Ray; Gilvarry, Michael; Holmegaard, Lukas; Abrahamsson, Margareta; Jerndal, Mikael; Dehlfors, Niclas; Brennan, Paul; Power, Sarah; O'Hare, Alan; Griffin, Emma; Kallmes, David F.; Brinjikji, Waleed; Szikora, István; Tatlisumak, Turgut; Rentzos, Alexandros; Thornton, John; Doyle, Karen M. (BMJ Publishing Group, 2019-11-04)Background and aims Platelets and von Willebrand factor (vWF) are key factors in thrombosis and thus are likely key components of acute ischemic stroke (AIS) emboli. We aimed to characterize platelet and vWF levels in AIS ... -
Relationship between epithelial and stromal TRIM28 expression predicts survival in colorectal cancer patients
Fitzgerald, Seán; Sheehan, Katherine M.; O'Grady, Anthony; Kenny, Dermot; O'Kennedy, Richard; Kay, Elaine W.; Kijanka, Gregor S. (Wiley, 2013-02-21)Background and Aim TRIM28 is a multi‐domain nuclear protein with pleotropic effects in both normal and tumor cells. In this study, TRIM28 expression in epithelial and stromal tumor microenvironment and its prognostic role ... -
Storage of blood clots for histological analysis: How long is too long in saline and paraformaldehyde?
Douglas, Andrew; Fitzgerald, Seán; Pandit, Abhay; Doyle, Karen M. (Universidad de Murcia, 2019)To investigate the composition of blood clots following mechanical thrombectomy, it is essential to ensure optimum storage for highest quality histological and immunofluorescence analysis. We investigated for how long clots ... -
Stromal TRIM28-associated signaling pathway modulation within the colorectal cancer microenvironment
Fitzgerald, Seán; Espina, Virginia; Liotta, Lance; Sheehan, Katherine M.; O’Grady, Anthony; Cummins, Robert; O’Kennedy, Richard; Kay, Elaine W.; Kijanka, Gregor S. (BMC (part of Springer Nature), 2018-04-10)Background Stromal gene expression patterns predict patient outcomes in colorectal cancer. TRIM28 is a transcriptional co-repressor that regulates an abundance of genes through the KRAB domain family of transcription ...