http://stroke.ahajournals.org/content/early/2018/01/29/STROKEAHA.117.019136
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Abstract
Background and Purpose—Human
amnion epithelial cells (hAECs) are nonimmunogenic, nontumorigenic,
anti-inflammatory cells normally discarded with placental tissue. We
reasoned that their profile of biological features, wide availability,
and the lack of ethical barriers to their use could make these cells
useful as a therapy in ischemic stroke.
Methods—We
tested the efficacy of acute (1.5 hours) or delayed (1–3 days)
poststroke intravenous injection of hAECs in 4 established animal models
of cerebral ischemia. Animals included young (7–14 weeks) and aged mice
(20–22 months) of both sexes, as well as adult marmosets of either sex.
Results—We
found that hAECs administered 1.5 hours after stroke in mice migrated
to the ischemic brain via a CXC chemokine receptor type 4-dependent
mechanism and reduced brain inflammation, infarct development, and
functional deficits. Furthermore, if hAECs administration was delayed
until 1 or 3 days poststroke, long-term functional recovery was still
augmented in young and aged mice of both sexes. We also showed
proof-of-principle evidence in marmosets that acute intravenous
injection of hAECs prevented infarct development from day 1 to day 10
after stroke.
Conclusions—Systemic poststroke administration of hAECs elicits marked neuroprotection and facilitates mechanisms of repair and recovery.
- Received August 22, 2017.
- Revision received December 14, 2017.
- Accepted December 15, 2017.
- © 2018 American Heart Association, Inc.
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