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- W3107765657 abstract "Targeting drug delivery to hair follicles is valuable to treat conditions such as alopecia’s and acne, and this shunt route may also allow drug delivery to deeper skin layers and the systemic circulation by avoiding the intact stratum corneum. Here, we investigated the effects of nanoparticle surface chemistry on their delivery into hair follicles by synthesizing fluorescent thiolated silica nanoparticles and functionalizing with 750 Da and 5000 Da methoxypolyethylene glycol maleimide (PEG). The stability of the nanoparticles in skin homogenate was verified before tape stripping of porcine-dosed tissue showed the distribution of the free fluorescent dye and different nanoparticles in the skin. Analysis of microscopic images of the skin sections revealed penetration of nanoparticles functionalized with PEG into the appendages whereas thiolated nanoparticles stayed on the surface of the skin and were removed by tape stripping. Nanoparticles functionalized with PEG 5000 Da penetrated deeper into the hair follicles compared to counterparts functionalized with PEG 750 Da. PEGylation can thus enhance targeted delivery of nanoparticulates into hair follicles." @default.
- W3107765657 created "2020-12-07" @default.
- W3107765657 creator A5022568201 @default.
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- W3107765657 date "2021-01-01" @default.
- W3107765657 modified "2023-10-15" @default.
- W3107765657 title "Thiolated and PEGylated silica nanoparticle delivery to hair follicles" @default.
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- W3107765657 doi "https://doi.org/10.1016/j.ijpharm.2020.120130" @default.
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