Loading...
Regulation of inducible nitric oxide synthase by arabinoxylans with molecular characterisation from wheat flour in cultured human monocytes
Zhang, Zhengxiao Smith, Christopher J. Ashworth, Jason J. Li, Weili
Zhang, Zhengxiao
Smith, Christopher J.
Ashworth, Jason J.
Li, Weili
Advisors
Editors
Other Contributors
EPub Date
Publication Date
2018-01-08
Submitted Date
Collections
Files
Loading...
Accept version.pdf
Adobe PDF, 1.02 MB
Loading...
Fig 1.pdf
Adobe PDF, 672.67 KB
Loading...
Figure 2.pdf
Adobe PDF, 657.36 KB
Loading...
Graphical Abstract
Adobe PDF, 131.93 KB
Loading...
Table
Adobe PDF, 476.25 KB
Other Titles
Abstract
The immunomodulatory activity of the arabinoxylans (AXs) extracts from cereal sources has been reported to impart health benefits in terms of immune enhancement. This study investigated the effect of enzymatic extraction on extraction yield and structure of AXs from wheat flour pentosan fraction. Under the optimised conditions, the extraction yield of AXs reached up to 81.25%. Furthermore, the study determined whether water-extracted AXs (WEAXs) and enzyme-extracted AXs (E-WEAXs) from wheat flour were able to differentially stimulate nitric oxide (NO) secretion through increased levels of inducible nitric oxide synthase (iNOS) in human U937 monocytes. The results indicated that AXs concomitantly induced (P < 0.05) both NO and iNOS productions in U937 monocytes compared to untreated cells. Compared with WEAXs, E-WEAXs resulted in a higher proportion of low Mw (1–10 KDa) AXs (49.51% vs. 19.11% in WEAXs), a higher A/X ratio (0.83 vs. 0.48 in WEAXs) and a higher yield (12.83 ± 0.35% vs. 7.54 ± 0.47% in WEAXs). Moreover, E-WEAXs induced significantly (P < 0.05) greater NO and iNOS production per million viable cells (61.8 ± 2.7 μm and 42.41 ± 3.83 ng respectively) than WEAXs (51.6 ± 2.6 μm and 33.46 ± 1.48 ng, respectively). The findings suggest AXs may heighten innate immune activity in the absence of infection or disease through an iNOS-mediated stimulation of NO production. The immunomodulatory activity of the wheat-derived AXs was enhanced by enzyme treatment, with low Mw and high A/X ratio associated with elevated NO/iNOS levels in human monocytes compared to water extraction.
Citation
Zhang, Z., Smith, C. J., Ashworth, J. J., & Li, W. (2018). Regulation of inducible nitric oxide synthase by arabinoxylans with molecular characterisation from wheat flour in cultured human monocytes. International Journal of Food Science + Technology, 53(5), 1294-1302. https://doi.org/10.1111/ijfs.13710
Publisher
Wiley
Journal
International Journal of Food Science + Technology
Research Unit
DOI
10.1111/ijfs.13710
PubMed ID
PubMed Central ID
Type
Article
Language
en
Description
This is the peer reviewed version of the following article: Zhang, Z., Smith, C. J., Ashworth, J. J., & Li, W. (2018). Regulation of Nitric Oxide Synthase Expression by Structure Modified Arabinoxylans from Wheat Flour in Cultured Human Monocytes. International Journal of Food Science + Technology, 53(5), 1294-1302. https://doi.org/10.1111/ijfs.13710 which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/ijfs.13710/full. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving
Series/Report no.
ISSN
0950-5423
EISSN
1365-2621