PMID- 29776835 OWN - NLM STAT- MEDLINE DCOM- 20190913 LR - 20211204 IS - 1477-2566 (Electronic) IS - 1465-3249 (Linking) VI - 20 IP - 6 DP - 2018 Jun TI - The combination of mannitol and temozolomide increases the effectiveness of stem cell treatment in a chronic stroke model. PG - 820-829 LID - S1465-3249(18)30508-5 [pii] LID - 10.1016/j.jcyt.2018.04.004 [doi] AB - BACKGROUND: The blood-brain barrier (BBB) presents a significant challenge to the therapeutic efficacy of stem cells in chronic stroke. Various methods have been developed to increase BBB permeability, but these are associated with adverse effects and are, therefore, not clinically applicable. We recently identified that combination drug treatment of mannitol and temozolomide improved BBB permeability in vitro. Here, we investigated whether this combination could increase the effectiveness of stem cell treatment in an animal model of chronic ischemic stroke. METHODS: Chronic stroke was induced in rats by middle cerebral artery occlusion (MCAo). After then, rats were administered human umbilical cord-derived mesenchymal stromal cells (hUC-MSCs) by intravenous injection with or without combination drug treatment of mannitol and temozolomide. To evaluate the therapeutic efficacy, behavioral and immunohistochemical tests were performed, and the differences among control, stem cell only, combination drug only and stem cell with combination drug treatment were analyzed. RESULTS: Although no hUC-MSCs were detected in any group, treatment with stem cells and combination drug of mannitol and temozolomide increased the intracerebral delivery of hCD63-positive microvesicles compared with stem cell only treatment. Furthermore, treatment with stem cells and drug combination ameliorated behavioral deficits and increased bromodeoxyuridine-, doublecortin- and Reca-1-positive cells in the perilesional area as compared with other groups. DISCUSSION: The combination drug treatment of mannitol and temozolomide allowed for the efficient delivery of hUC-MSC-derived microvesicles into the brain in a chronic stroke rat model. This attenuated behavioral deficits, likely by improving neural regeneration and angiogenesis. Thus, combination drug treatment of mannitol and temozolomide could be a novel therapeutic option for patients with chronic ischemic stroke. CI - Copyright (c) 2018 International Society for Cellular Therapy. All rights reserved. FAU - Choi, Chunggab AU - Choi C AD - Department of Neurology, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea. FAU - Kim, Hye Min AU - Kim HM AD - Department of Neurology, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea. FAU - Shon, Jeeheun AU - Shon J AD - Department of Neurology, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea. FAU - Park, Jiae AU - Park J AD - Department of Neurology, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea. FAU - Kim, Hyeong-Taek AU - Kim HT AD - Department of Neurology, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea. FAU - Kang, Suk Ho AU - Kang SH AD - Department of Obstetrics and Gynecology, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea. FAU - Oh, Seung-Hun AU - Oh SH AD - Department of Neurology, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea. FAU - Kim, Nam Keun AU - Kim NK AD - Institute for Clinical Research, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea. FAU - Kim, Ok Joon AU - Kim OJ AD - Department of Neurology, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea; Institute for Clinical Research, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea. Electronic address: okjun77@cha.ac.kr. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Cytotherapy JT - Cytotherapy JID - 100895309 RN - 0 (Dcx protein, rat) RN - 0 (Doublecortin Protein) RN - 3OWL53L36A (Mannitol) RN - YF1K15M17Y (Temozolomide) SB - IM MH - Animals MH - Chronic Disease MH - Combined Modality Therapy MH - Cord Blood Stem Cell Transplantation/adverse effects/*methods MH - Disease Models, Animal MH - Doublecortin Protein MH - Drug Therapy, Combination/adverse effects MH - Infarction, Middle Cerebral Artery/complications/pathology/therapy MH - Male MH - Mannitol/*administration & dosage/adverse effects MH - Mesenchymal Stem Cell Transplantation/adverse effects/*methods MH - Mesenchymal Stem Cells/cytology/drug effects/physiology MH - Nerve Regeneration/drug effects MH - Rats MH - Rats, Sprague-Dawley MH - Stroke/pathology/*therapy MH - Temozolomide/*administration & dosage/adverse effects MH - Treatment Outcome OTO - NOTNLM OT - blood-brain barrier OT - chronic ischemic stroke OT - mannitol OT - mesenchymal stromal cell OT - temozolomide OT - umbilical cord EDAT- 2018/05/20 06:00 MHDA- 2019/09/14 06:00 CRDT- 2018/05/20 06:00 PHST- 2018/01/31 00:00 [received] PHST- 2018/04/19 00:00 [revised] PHST- 2018/04/25 00:00 [accepted] PHST- 2018/05/20 06:00 [pubmed] PHST- 2019/09/14 06:00 [medline] PHST- 2018/05/20 06:00 [entrez] AID - S1465-3249(18)30508-5 [pii] AID - 10.1016/j.jcyt.2018.04.004 [doi] PST - ppublish SO - Cytotherapy. 2018 Jun;20(6):820-829. doi: 10.1016/j.jcyt.2018.04.004.