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19. Contributors

Author

Adams, Harold P., primary, Adeoye, Opeolu, additional, Albers, Gregory W., additional, Alexandrov, Andrei V., additional, Amin-Hanjani, Sepideh, additional, An, Hongyu, additional, Anderson, Craig S., additional, Anrather, Josef, additional, Aparicio, Hugo J., additional, Arai, Ken, additional, Aronowski, Jaroslaw, additional, Atchaneeyasakul, Kunakorn, additional, Audebert, Heinrich, additional, Auer, Roland N., additional, Awad, Issam A., additional, Ay, Hakan, additional, Baltan, Selva, additional, Balu, Ramani, additional, Behbahani, Mandana, additional, Benavente, Oscar R., additional, Bershad, Eric M., additional, Berthaud, Jimmy V., additional, Blackburn, Spiros L., additional, Bonati, Leo H., additional, Bösel, Julian, additional, Bousser, Marie Germaine, additional, Broderick, Joseph P., additional, Brown, Martin M., additional, Brown, Wendy, additional, Brust, John C.M., additional, Bushnell, Cheryl, additional, Canhão, Patrícia, additional, Caplan, Louis R., additional, Carrión-Penagos, Julián, additional, Castellanos, Mar, additional, Caunca, Michelle R., additional, Chabriat, Hugues, additional, Chamorro, Angel, additional, Chen, Jieli, additional, Chen, Jun, additional, Chopp, Michael, additional, Christorforids, Greg, additional, Connolly, E. Sander, additional, Cramer, Steven C., additional, Cucchiara, Brett L., additional, Czap, Alexandra L., additional, Dannenbaum, Mark J., additional, Davis, Patricia H., additional, Dawson, Ted M., additional, Dawson, Valina L., additional, Day, Arthur L., additional, De Silva, T. Michael, additional, de Sousa, Diana Aguiar, additional, Del Brutto, Victor J., additional, del Zoppo, Gregory J., additional, Derdeyn, Colin P., additional, Di Tullio, Marco R., additional, Diener, Hans Christoph, additional, Diringer, Michael N., additional, Dobkin, Bruce H., additional, Dzialowski, Imanuel, additional, Elkind, Mitchell S.V., additional, Elm, Jordan, additional, Feigin, Valery L., additional, Ferro, José Manuel, additional, Field, Thalia S., additional, Fischer, Marlene, additional, Fornage, Myriam, additional, Furie, Karen L., additional, Garcia-Bonilla, Lidia, additional, Giannotta, Steven L., additional, Gobin, Y. Pierre, additional, Goldberg, Mark P., additional, Goldstein, Larry B., additional, Gonzales, Nicole R., additional, Greer, David M., additional, Grotta, James C., additional, Guo, Ruiming, additional, Gutierrez, Jose, additional, Harmel, Peter, additional, Howard, George, additional, Howard, Virginia J., additional, Hwang, Jee-Yeon, additional, Iadecola, Costantino, additional, Jahan, Reza, additional, Jickling, Glen C., additional, Joutel, Anne, additional, Kasner, Scott E., additional, Katan, Mira, additional, Kellner, Christopher P., additional, Khan, Muhib, additional, Kidwell, Chelsea S., additional, Kim, Helen, additional, Kim, Jong S., additional, Kircher, Charles E., additional, Krings, Timo, additional, Krishnamurthi, Rita V., additional, Kurth, Tobias, additional, Lansberg, Maarten G., additional, Levy, Elad I., additional, Liebeskind, David S., additional, Liew, Sook-Lei, additional, Lin, David J., additional, Lisle, Benjamin, additional, Lo, Eng H., additional, Lyden, Patrick D., additional, Maki, Takakuni, additional, Maragkos, Georgios A., additional, Marosfoi, Miklos, additional, McCullough, Louise D., additional, Meckler, Jason M., additional, Meschia, James Frederick, additional, Messé, Steven R., additional, Mocco, J, additional, Mokin, Maxim, additional, Mooney, Michael A., additional, Morgenstern, Lewis B., additional, Moskowitz, Michael A., additional, Mullen, Michael T., additional, Nägel, Steffen, additional, Nedergaard, Maiken, additional, Neira, Justin A., additional, Newman, Sarah, additional, Nicholson, Patrick J., additional, Norrving, Bo, additional, O’Donnell, Martin, additional, Ofengeim, Dimitry, additional, Ogata, Jun, additional, Ogilvy, Christopher S., additional, Orrù, Emanuele, additional, Ortega-Gutiérrez, Santiago, additional, Padrick, Matthew Maximillian, additional, Parsha, Kaushik, additional, Parsons, Mark, additional, Patel, Neil V., additional, Patel, Virendra I., additional, Pawlikowska, Ludmila, additional, Pérez, Adriana, additional, Perez-Pinzon, Miguel A., additional, Picard, John M., additional, Polster, Sean P., additional, Powers, William J., additional, Puetz, Volker, additional, Putaala, Jukka, additional, Rabinovich, Margarita, additional, Ransom, Bruce R., additional, Roa, Jorge A., additional, Rosenberg, Gary A., additional, Rossitto, Christina P., additional, Rundek, Tatjana, additional, Russin, Jonathan J., additional, Sacco, Ralph L., additional, Safouris, Apostolos, additional, Samaniego, Edgar A., additional, Sansing, Lauren H., additional, Satani, Nikunj, additional, Sattenberg, Ronald J., additional, Saver, Jeffrey L., additional, Savitz, Sean I., additional, Schmidt, Christian, additional, Seshadri, Sudha, additional, Sharma, Vijay K., additional, Sharp, Frank R., additional, Sheth, Kevin N., additional, Siddiqi, Omar K., additional, Singhal, Aneesh B., additional, Sobey, Christopher G., additional, Sommer, Clemens J., additional, Spetzler, Robert F., additional, Stapleton, Christopher J., additional, Strickland, Ben A., additional, Su, Hua, additional, Suarez, José I., additional, Takayama, Hiroo, additional, Tarsia, Joseph, additional, Tatlisumak, Turgut, additional, Thomas, Ajith J., additional, Thompson, John W., additional, Tsivgoulis, Georgios, additional, Tournier-Lasserve, Elizabeth, additional, Vidal, Gabriel, additional, Wakhloo, Ajay K., additional, Weksler, Babette B., additional, Willey, Joshua Z., additional, Wintermark, Max, additional, Wong, Lawrence K.S., additional, Xi, Guohua, additional, Xu, Jinchong, additional, Yaghi, Shadi, additional, Yamaguchi, Takenori, additional, Yang, Tuo, additional, Yasaka, Masahiro, additional, Zahuranec, Darin B., additional, Zhang, Feng, additional, Zhang, John H., additional, Zheng, Zhitong, additional, Zukin, R. Suzanne, additional, and Zweifler, Richard M., additional

Published
2022
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25. Characteristics of activation of monocyte-derived macrophages versus microglia after mouse experimental intracerebral hemorrhage.

Author

Ye, Fenghui, Yang, Jinting, Holste, Katherine G, Koduri, Sravanthi, Hua, Ya, Keep, Richard F, Garton, Hugh JL, and Xi, Guohua

Abstract

Both monocyte-derived macrophages (MDMs) and brain resident microglia participate in hematoma resolution after intracerebral hemorrhage (ICH). Here, we utilized a transgenic mouse line with enhanced green fluorescent protein (EGFP) labeled microglia (Tmem119-EGFP mice) combined with a F4/80 immunohistochemistry (a pan-macrophage marker) to visualize changes in MDMs and microglia after ICH. A murine model of ICH was used in which autologous blood was stereotactically injected into the right basal ganglia. The autologous blood was co-injected with CD47 blocking antibodies to enhance phagocytosis or clodronate liposomes for phagocyte depletion. In addition, Tmem119-EGFP mice were injected with the blood components peroxiredoxin 2 (Prx2) or thrombin. MDMs entered the brain and formed a peri-hematoma cell layer by day 3 after ICH and giant phagocytes engulfed red blood cells were found. CD47 blocking antibody increased the number of MDMs around and inside the hematoma and extended MDM phagocytic activity to day 7. Both MDMs and microglia could be diminished by clodronate liposomes. Intracerebral injection of Prx2 but not thrombin attracted MDMs into brain parenchyma. In conclusion, MDMs play an important role in phagocytosis after ICH which can be enhanced by CD47 blocking antibody, suggesting the modulation of MDMs after ICH could be a future therapeutic target. [ABSTRACT FROM AUTHOR]

Published
2023
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30. Effect of Deferoxamine on Outcome According to Baseline Hematoma Volume: A Post Hoc Analysis of the i-DEF Trial

Author

Wei, Chenchen, primary, Wang, Jeffrey, additional, Foster, Lydia D., additional, Yeatts, Sharon D., additional, Moy, Claudia, additional, Mocco, J, additional, Selim, Magdy, additional, Palesch, Yuko, additional, Griffin, Jessica, additional, Perlmutter, Aaron, additional, Norton, Casey, additional, Dillon, Catherine, additional, Thornhill, Andre, additional, Greenberg, Steven, additional, Morgenstern, Lewis, additional, Hanley, Daniel, additional, Xi, Guohua, additional, Bleck, Thomas P, additional, Balk, Robert, additional, Zhao, Wenle, additional, Kim, Jaemyung, additional, Kumar, Sandeep, additional, Farinella, Megan, additional, Siwila-Sackman, Erica, additional, Feigert, Caroline, additional, Schlaug, Gottfried, additional, Wang, Jasmine, additional, Wright, Clinton, additional, Janis, Scott, additional, Gilbert, Peter, additional, Kase, Carlos S, additional, Carson, Shannon, additional, Flaherty, Matthew, additional, Kessler, Craig M, additional, McClure, Leslie A, additional, Bannon, Donna, additional, Broderick, Joseph, additional, and Dill, Amy, additional

Published
2022
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37. Comparing white and gray matter responses to lobar intracerebral hemorrhage in piglets and the effects of deferoxamine.

Author

Wan Y, Xie Q, Hua Y, Xi G, Keep RF, and Pandey A

Abstract

Background: Intracerebral hemorrhage (ICH) often impacts patient white matter. However, preclinically, the effects of ICH are mostly studied in rodents with sparse white matter. This study used a lobar porcine ICH model to examine differences in the effects of ICH on white and gray matter as well as the role of the iron chelator deferoxamine (DFX), on attenuation of such injury., Methods: This two-part study was performed in piglets. Firstly, piglets had a needle (Sham) or 2.5 ml blood injection (ICH) and were euthanized at day 3. Secondly, animals were treated with vehicle or DFX after ICH and were euthanized at day 3. White and gray matter edema, the number of oligodendrocytes (mature and immature) and neurons, and the number of Perls' (iron), ferritin and heme oxygenase (HO)-1 positive cells were examined., Results: At day 3, ICH induced greater edema formation in white than gray matter. This marked white matter edema was associated with a loss of mature, but not immature, oligodendrocytes. ICH also induced neuronal death in gray matter. There were also marked increases in Perls', ferritin and HO-1 positive cells after ICH in both white and gray matter, but significantly more in the former. DFX attenuated ICH-induced brain edema in white but not gray matter and this was associated with increased survival of mature oligodendrocytes. DFX also increased survival of neurons in the gray matter and it reduced the number of Perls', ferritin and HO-1 positive cells in both tissue types., Conclusions: While there were commonalities in perihematomal changes between white and gray matter after ICH, there was greater edema in white matter which may be linked to the susceptibility of mature oligodendrocytes to ICH injury. Similarly, while DFX reduced perihematomal iron overload in both white and gray matter, it only significantly reduced edema in white matter where it increased the number of mature oligodendrocytes., Competing Interests: Declaration of competing interest The authors declare there is no conflict of interest., (Copyright © 2024. Published by Elsevier Inc.)

Published
2024
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38. Attenuation of ventriculomegaly and iron overload after intraventricular hemorrhage by membrane attack complex inhibition.

Author

Holste KG, Ye F, Koduri S, Garton HJL, Maher CO, Keep RF, Hua Y, and Xi G

Subjects
Animals, Male, Rats, Rats, Sprague-Dawley, Magnetic Resonance Imaging, Cerebral Hemorrhage complications, Cerebral Hemorrhage diagnostic imaging, Cerebral Intraventricular Hemorrhage diagnostic imaging, Injections, Intraventricular, Disease Models, Animal, Hydrocephalus etiology, Hydrocephalus diagnostic imaging, Iron Overload
Abstract

Objective: The pathophysiology of posthemorrhagic hydrocephalus (PHH) is not well understood, but recent data suggest blood components play a significant role. This study aimed to understand the timing of membrane attack complex (MAC) activation after intraventricular hemorrhage (IVH) and the effect of MAC inhibition on PHH development., Methods: This study was composed of four parts. First, 24 young adult male rats underwent stereotactic intraventricular injection of autologous blood or saline and MRI on day 1, 3, or 7 after hemorrhage. Second, 18 rats underwent intraventricular injection of saline, autologous blood with aurin tricarboxylic acid (ATA) in vehicle, or autologous blood with vehicle and underwent serial MRI studies on days 1 and 3 after hemorrhage. Third, 12 rats underwent intraventricular injections as above and MRI 2 hours after hemorrhage. Finally, 24 rats underwent the intraventricular injections as above, as well as serial MRI studies on days 1, 7, 14, and 28 after hemorrhage. The MR images were used to calculate ventricular volume and iron deposition. Open field testing was performed to assess functional outcomes. Outcomes on day 28 were reported as a ratio to the animal's baseline values and normalized via log-transformation. Statistical analysis included the Shapiro-Wilk tests for normality and t-tests and 1-way analysis of variance for 2 and 3 groups of continuous variables, respectively., Results: MAC was found within the hematoma 1 day after hemorrhage and persisted until day 7. Administration of ATA resulted in similar intraventricular hematoma volumes compared to vehicle 2 hours after hemorrhage. At 1 and 3 days after hemorrhage, ATA administration resulted in significantly smaller ventricular volumes and less hemolysis within the hematoma than in the vehicle animals. Administration of ATA also resulted in significantly smaller ventriculomegaly and less iron deposition in the periventricular area than in the vehicle rats 28 days after hemorrhage. Functionally, ATA rats were significantly faster, traveled longer distances, and spent less time resting than vehicle rats at 28 days., Conclusions: MAC was activated early and persisted within the hematoma until day 7 after IVH. MAC inhibition attenuated hemolysis in the clot and ventriculomegaly acutely after IVH. One month after hemorrhage, MAC inhibition attenuated ventriculomegaly and iron accumulation and improved functional outcomes.

Published
2023
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39. The Role of Iron in Hemorrhagic Stroke.

Author

Koduri S, Keep RF, Xi G, Chaudhary N, and Pandey AS

Abstract

Competing Interests: Disclosures The authors have no personal, financial, or institutional interest in any of the drugs, materials, or devices described in this article.

Published
2022
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