Electric field stimulation through a biodegradable polypyrrole-co-polycaprolactone substrate enhances neural cell growth.
Electric field stimulation through a biodegradable polypyrrole-co-polycaprolactone substrate enhances neural cell growth.
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通过可生物降解的多吡咯-O-polycaprolactone底物通过可生物降解的电场刺激增强了神经细胞的生长。
DOI:
10.1002/jbm.a.34925
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发表时间:
2014-08
影响因子:
4.9
通讯作者:
Schmidt, Christine E.
中科院分区:
文献类型:
--
作者:
Nguyen, Hieu T.;Sapp, Shawn;Wei, Claudia;Chow, Jacqueline K.;Alvin Nguyen;Coursen, Jeff;Luebben, Silvia;Chang, Emily;Ross, Robert;Schmidt, Christine E.
Nerve guidance conduits (NGCs) are FDA-approved devices used to bridge gaps across severed nerve cables and help direct axons sprouting from the proximal end toward the distal stump. In this paper we present the development of a novel electrically conductive, biodegradable NGC made from a polypyrrole-block-polycaprolactone (PPy-PCL) copolymer material laminated with poly(lactic-co-glycolic acid) (PLGA). The PPy-PCL has a bulk conductivity ranging 10–20 S/cm and loses 40 wt% after 7 months under physiologic conditions. Dorsal root ganglia (DRG) grown on flat PPy-PCL/PLGA material exposed to direct current electric fields (EF) of 100 mV/cm for 2 h increased axon growth by 13% (± 2%) towards either electrode of a 2-electrode setup, compared to control grown on identical substrates without EF exposure. Alternating current increased axon growth by 21% (± 3%) without an observable directional preference, compared to the same control group. The results from this study demonstrate PLGA-coated PPy-PCL is a unique biodegradable material that can deliver substrate EF stimulation to improve axon growth for peripheral nerve repair.
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影响因子:
4.8
作者:
Ariza, Carlos Atico;Fleury, Asha T.;Mallapragada, Surya K.
通讯作者:
Mallapragada, Surya K.
DOI:
10.1163/092050609x12481751806330
发表时间:
2010-01-01
影响因子:
3.6
作者:
Durgam, Hymavathi;Sapp, Shawn;Schmidt, Christine E.
通讯作者:
Schmidt, Christine E.
影响因子:
3.2
作者:
Kimura, K;Yanagida, Y;Aizawa, M
通讯作者:
Aizawa, M
影响因子:
19
作者:
Gomez, Natalia;Lee, Jae Y.;Schmidt, Christine E.
通讯作者:
Schmidt, Christine E.
影响因子:
14
作者:
Kotwal, A;Schmidt, CE
通讯作者:
Schmidt, CE