2026-09-20T19:20:19Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/769042022-01-13T07:54:19Zcom_1721.1_7582com_1721.1_7581col_1721.1_131022
Robert Langer.
Pritchard, Christopher D., (Christopher David)
Massachusetts Institute of Technology. Dept. of Chemical Engineering.
Massachusetts Institute of Technology. Department of Chemical Engineering
2013-02-14T15:15:51Z
2013-02-14T15:15:51Z
2012
http://hdl.handle.net/1721.1/76904
824133007
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2012.
"June 2012." Cataloged from PDF version of thesis.
Includes bibliographical references.
An injectable hydrogel for controlled release of methylprednisolone was designed based on the inflammatory response during acute spinal cord injury. The gel is injectable through a small gauge needle, cross-links under physiological conditions, and releases methylprednisolone over a time period on the order of weeks. Swelling properties were characterized to address potential safety concerns for potential clinical use. Two studies are presented towards the development of a model Brown-Sequard syndrome and accompanying behavioral and pathological outcome measures for evaluation of biomaterials in vivo. A modified poly(glycerol-co-sebacic acid) membrane was developed using electrospun poly(s-caprolactone) nanofibers. Retinal adhesion and histology was evaluated in vitro. Membranes were evaluated in vivo for their ability to selectively remove photoreceptors in situ and promote survival and integration of retinal transplants. Viscoelastic poly(ethylene glycol) sols were evaluated as potential vitreous substitutes. Finally, a business plan outlines the strategy towards clinical trials for a hydrogel vitreous substitute.
by Christopher D. Pritchard.
Ph.D.
256 p.
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by
copyright. They may be viewed from this source for any purpose, but
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http://dspace.mit.edu/handle/1721.1/7582
Chemical Engineering.
Biomaterials for protection and repair of the central nervous system
Thesis
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Publication
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<Abstract>An injectable hydrogel for controlled release of methylprednisolone was designed based on the inflammatory response during acute spinal cord injury. The gel is injectable through a small gauge needle, cross-links under physiological conditions, and releases methylprednisolone over a time period on the order of weeks. Swelling properties were characterized to address potential safety concerns for potential clinical use. Two studies are presented towards the development of a model Brown-Sequard syndrome and accompanying behavioral and pathological outcome measures for evaluation of biomaterials in vivo. A modified poly(glycerol-co-sebacic acid) membrane was developed using electrospun poly(s-caprolactone) nanofibers. Retinal adhesion and histology was evaluated in vitro. Membranes were evaluated in vivo for their ability to selectively remove photoreceptors in situ and promote survival and integration of retinal transplants. Viscoelastic poly(ethylene glycol) sols were evaluated as potential vitreous substitutes. Finally, a business plan outlines the strategy towards clinical trials for a hydrogel vitreous substitute.</Abstract>
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