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Nun, Nicholas R ; University of Akron,2021
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Abstract: Wound dressings play a pivotal role in providing favorable wound healing outcomes. Active dressings which incorporate bioactive agents such as anti-inflammatory drugs, antimicrobial compounds or peptides and proteins can help to alleviate patient pain and reduce healing times. This is especially true for diabetic ulcers, which are wounds that are stuck in the inflammatory stage of wound healing and are often associated with bacterial infection. This work describes the development of wound dressings capable of improving healing outcomes. To do so, a series of functional polyesters derived from a modular N-substituted diol monomer platform were synthesized. Wound dressings comprising these polyesters were fabricated using the 3D printing and electrospinning techniques. Dyes serving as model drug compounds were released from electrospun dressings to show the ability of these dressings to deliver drugs. The two fabrication techniques were used to create dressings comprised of varying polyester compositions. An in vivo acute wound rat model showed that despite their varying compositions and thread sizes, none of them were detrimental to normal healing processes. Electrospun dressings showed broad spectrum antimicrobial activity in an acute infected wound mouse model when an antimicrobial poly (ester urethane) was incorporated. Finally, 3D printed scaffolds were conjugated with peptides capable of recruiting keratinocytes and fibroblasts in an attempt to improve healing outcomes in an acute wound rat model. These studies seek to guide future researchers in the design and implementation of active wound dressings, especially by showing the utility of functionality within those dressing systems.
Purchased from AmBeed: 111-95-5
CAS No. : | 111-95-5 | MDL No. : | MFCD00025906 |
Formula : | C6H15NO2 | Boiling Point : | - |
Linear Structure Formula : | NH((CH2)2OCH3)2 | InChI Key : | IBZKBSXREAQDTO-UHFFFAOYSA-N |
M.W : | 133.19 | Pubchem ID : | 2383 |
Synonyms : |
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Signal Word: | Danger | Class: | 8,3 |
Precautionary Statements: | P280-P305+P351+P338-P310 | UN#: | 2734 |
Hazard Statements: | H225-H314 | Packing Group: | Ⅱ |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
40% | With potassium carbonate; In 1,4-dioxane; at 70℃; | Compound 1-3 (3.5 g, 13.5 mmol) was dissolved in 1,4-dioxane (50 mL), followed by addition of compound 5-1 (1.9 g, 14.2 mmol), and potassium carbonate (3.7 g, 27 mmol) was added under stirring in batches, followed by stirring the reaction overnight at 70° C., TLC monitoring showed that the starting material 1-3 was completely reacted. The solvent was removed under reduced pressure to obtain a concentrated residue. The concentrated residue was dispensed with dichloromethane (20 mL), an appropriate amount of silica gel was added and the sample was stirred, spin-dried under reduced pressure and directly placed on a silica gel column for column chromatographic purification, with an eluent (dichloromethane:methanol=20/1-5/1) to obtain the target product as a pale yellow oil 5-2 (1.2 g, 40percent), LC-MS: m/z=222[M+H]+. |
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