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Chang CZ, Wu SC, Kwan AL, Lin CL, Hwang SL. Retraction Note: 6-Mercaptopurine reverses experimental vasospasm and alleviates the production of endothelins in NO-independent mechanism-a laboratory study. Acta Neurochir (Wien) 2024; 166:3. [PMID: 38206358 DOI: 10.1007/s00701-024-05905-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Affiliation(s)
- Chih-Zen Chang
- Department of Surgery, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan, Republic of China.
- Department of Neurosurgery, Kaohsiung Medical University Hospital, No. 100, Tzyou 1st Road, Kaohsiung, Taiwan, Republic of China.
- Department of Surgery, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan, Republic of China.
| | - Shu-Chuan Wu
- Department of Neurosurgery, Kaohsiung Medical University Hospital, No. 100, Tzyou 1st Road, Kaohsiung, Taiwan, Republic of China
| | - Aij-Lie Kwan
- Department of Surgery, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan, Republic of China
- Department of Neurosurgery, Kaohsiung Medical University Hospital, No. 100, Tzyou 1st Road, Kaohsiung, Taiwan, Republic of China
| | - Chih-Long Lin
- Department of Surgery, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan, Republic of China
- Department of Neurosurgery, Kaohsiung Medical University Hospital, No. 100, Tzyou 1st Road, Kaohsiung, Taiwan, Republic of China
| | - Shiuh-Lin Hwang
- Department of Surgery, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan, Republic of China
- Department of Neurosurgery, Kaohsiung Medical University Hospital, No. 100, Tzyou 1st Road, Kaohsiung, Taiwan, Republic of China
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Russin JJ, Montagne A, D’Amore F, He S, Shiroishi MS, Rennert RC, Depetris J, Zlokovic BV, Mack WJ. Permeability imaging as a predictor of delayed cerebral ischemia after aneurysmal subarachnoid hemorrhage. J Cereb Blood Flow Metab 2018; 38:973-979. [PMID: 29611451 PMCID: PMC5998996 DOI: 10.1177/0271678x18768670] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Blood-brain barrier (BBB) dysfunction has been implicated in ischemic risk following aneurysmal subarachnoid hemorrhage (aSAH), but never directly imaged. We prospectively examined whether post-bleed day 4 dynamic contrast-enhanced magnetic resonance (DCE-MR) BBB permeability imaging could predict development of delayed cerebral ischemia (DCI). Global MR-derived BBB permeability ( Ktrans) was significantly higher in aSAH patients who subsequently developed DCI (five patients; 2.28 ± 0.09 × 10-3 min-1) compared to those who experienced radiographic vasospasm only (three patients; 1.85 ± 0.12 × 10-3 min-1; p < 0.05), or no vasospasm/ischemia (eight patients; 1.74 ± 0.07 × 10-3 min-1; p < 0.01). Ktrans > 2 × 10-3 min-1 predicted development of DCI (AUC = 0.98, 95% CI: 0.93-1). Global BBB dysfunction following aSAH is detectable with DCE-MR and predictive of ischemic risk.
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Affiliation(s)
- Jonathan J Russin
- USC Neurorestoration Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
- Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
- Jonathan J Russin, USC Neurorestoration Center, Keck School of Medicine, University of Southern California, 1200 N State Street, Suite 3300, Los Angeles, CA 90033, USA.
| | - Axel Montagne
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Francesco D’Amore
- Department of Radiology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Shuhan He
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Mark S Shiroishi
- Department of Radiology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Robert C Rennert
- USC Neurorestoration Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Jena Depetris
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Berislav V Zlokovic
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - William J Mack
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
- Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
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Burnstock G, Ralevic V. Purinergic signaling and blood vessels in health and disease. Pharmacol Rev 2013; 66:102-92. [PMID: 24335194 DOI: 10.1124/pr.113.008029] [Citation(s) in RCA: 219] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Purinergic signaling plays important roles in control of vascular tone and remodeling. There is dual control of vascular tone by ATP released as a cotransmitter with noradrenaline from perivascular sympathetic nerves to cause vasoconstriction via P2X1 receptors, whereas ATP released from endothelial cells in response to changes in blood flow (producing shear stress) or hypoxia acts on P2X and P2Y receptors on endothelial cells to produce nitric oxide and endothelium-derived hyperpolarizing factor, which dilates vessels. ATP is also released from sensory-motor nerves during antidromic reflex activity to produce relaxation of some blood vessels. In this review, we stress the differences in neural and endothelial factors in purinergic control of different blood vessels. The long-term (trophic) actions of purine and pyrimidine nucleosides and nucleotides in promoting migration and proliferation of both vascular smooth muscle and endothelial cells via P1 and P2Y receptors during angiogenesis and vessel remodeling during restenosis after angioplasty are described. The pathophysiology of blood vessels and therapeutic potential of purinergic agents in diseases, including hypertension, atherosclerosis, ischemia, thrombosis and stroke, diabetes, and migraine, is discussed.
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Affiliation(s)
- Geoffrey Burnstock
- Autonomic Neuroscience Centre, University College Medical School, Rowland Hill Street, London NW3 2PF, UK; and Department of Pharmacology, The University of Melbourne, Australia.
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A novel multicenter preclinical drug screening and biomarker consortium for experimental traumatic brain injury: operation brain trauma therapy. ACTA ACUST UNITED AC 2011; 71:S15-24. [PMID: 21795873 DOI: 10.1097/ta.0b013e31822117fe] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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