کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9774645 | 1509091 | 2005 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Salmonella-like bioadhesive nanoparticles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Salmonella-like bioadhesive nanoparticles Salmonella-like bioadhesive nanoparticles](/preview/png/9774645.png)
چکیده انگلیسی
The aim of this work was to evaluate the bioadhesive potential of a polymeric vector obtained by the association between Gantrez® AN nanoparticles and flagella-enriched Salmonella enteritidis extract. Fluorescently labelled nanoparticles (SE-NP) were prepared, after incubation between the polymer and the extract, by a solvent displacement method and cross-linkage with 1,3-diaminopropane. SE-NP displayed a size close to 280 nm and the amount of associated bacterial extract was 18 μg/mg nanoparticle. Flagellin represents more than 80% of the total proteins associated with SE-NP, which was identified by SDS-PAGE and confirmed by Western blotting. Concerning the bioadhesive properties, SE-NP shows an important tropism for the ileum. In fact, about 50% of the given dose of SE-NP was found in this gut region for at least 3 h. Interestingly, the bioadhesive ability of SE-NP correlated well with the described colonisation profile for Salmonella enteritidis. This fact was corroborated by competitive tissue distribution studies. Thus, when SE-NP and Salmonella cells were administered together by the oral route, both the bacteria and the nanoparticles displayed a similar distribution within the intestinal mucosa. However, the ability of SE-NP to be taken up by Peyer's patches appeared to be negatively affected by the presence of the bacteria. Similarly, when SE-NP was administered 30 min before cells, SE-NP were found broadly distributed in Peyer's patches, whereas the bacteria were neither able to adhere to nor penetrate this lymphoid tissue. In summary, SE-NP demonstrated their Salmonella-like gut colonization, which can be a useful vector for oral targeting strategies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Controlled Release - Volume 106, Issues 1â2, 18 August 2005, Pages 1-13
Journal: Journal of Controlled Release - Volume 106, Issues 1â2, 18 August 2005, Pages 1-13
نویسندگان
Hesham H. Salman, Carlos Gamazo, Miguel A. Campanero, Juan M. Irache,