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Roschek, Bill Jr.,Fink, Ryan C.,McMichael, Dan Li, Matthew,Tower, Christine M.,Smith, Robert D.,Alberte, Randall S. The Korean Society of Food Science and Nutrition 2009 Journal of medicinal food Vol.12 No.3
Rice bran, the outer bran and germ of the kernel and a by-product of rice milling, is rich in phytonutrients but has been underutilized because of lipid content instability. New methods for the processing of rice bran have yielded a stabilized form that is increasingly used in foods and dietary supplements. Recent studies have documented a role for stabilized rice bran (SRB) in treating diabetes and arthritis, although little is known of the bioactive compounds that impart these health benefits. Here we characterize the chemical composition of three extracts of SRB and identify the functional bioactives contributing to the inhibitory properties against three key pro-inflammatory enzymes (cyclooxygenase [COX] 1, COX2, and 5-lipoxygenase [5-LOX]) that control the inflammatory cascade involved in impaired joint health, pain, and arthritis. One extract (SRB-AI) demonstrated significant COX1 and COX2 inhibitory activities with 50% inhibitory concentration ($IC_{50}$) values for COX1 and COX2 of 305 and $29\;{\mu}g/mL$, respectively, but no 5-LOX inhibition. The second extract (SRB-AII) inhibited COX1, COX2, and 5-LOX with $IC_{50}$ values of 310, 19, and $396\;{\mu}g/mL$, respectively. The third extract (SRB-AIII), a blend of SRB-AI and SRB-AIII, inhibited COX1, COX2, and 5-LOX with respective $IC_{50}$ values of 48, 11, and $197\;{\mu}g/mL$. Analysis of the extracts by direct analysis in real time time of flight-mass spectrometry revealed that SRB-AI, SRB-AII, and SRB-AIII contain over 620, 770, and 810 compounds, respectively. Of these, 17 were identified as key bioactives for COX and/or LOX inhibition. These SRB extracts have applications for functional foods and dietary supplements for control of inflammation and joint health.
Bill Roschek Jr.,Ryan C. Fink,Dan Li,Matthew McMichael,Christine M. Tower,Robert D. Smith,Randall S. Alberte 한국식품영양과학회 2009 Journal of medicinal food Vol.12 No.3
Rice bran, the outer bran and germ of the kernel and a by-product of rice milling, is rich in phytonutrients but has been underutilized because of lipid content instability. New methods for the processing of rice bran have yielded a stabilized form that is increasingly used in foods and dietary supplements. Recent studies have documented a role for stabilized rice bran (SRB) in treating diabetes and arthritis, although little is known of the bioactive compounds that impart these health benefits. Here we characterize the chemical composition of three extracts of SRB and identify the functional bioactives contributing to the inhibitory properties against three key pro-inflammatory enzymes (cyclooxygenase [COX] 1, COX2, and 5-lipoxygenase [5-LOX]) that control the inflammatory cascade involved in impaired joint health, pain, and arthritis. One extract (SRB-AI) demonstrated significant COX1 and COX2 inhibitory activities with 50% inhibitory concentration (IC50) values for COX1 and COX2 of 305 and 29μg/mL, respectively, but no 5-LOX inhibition. The second extract (SRB-AII) inhibited COX1, COX2, and 5-LOX with IC50 values of 310, 19, and 396μg/mL, respectively. The third extract (SRB-AIII), a blend of SRB-AI and SRB-AIII, inhibited COX1, COX2, and 5-LOX with respective IC50 values of 48, 11, and 197μg/mL. Analysis of the extracts by direct analysis in real time time of flight-mass spectrometry revealed that SRB-AI, SRB-AII, and SRB-AIII contain over 620, 770, and 810 compounds, respectively. Of these, 17 were identified as key bioactives for COX and/or LOX inhibition. These SRB extracts have applications for functional foods and dietary supplements for control of inflammation and joint health.
Pollack, Samuela,Igo Jr., Robert P.,Jensen, Richard A.,Christiansen, Mark,Li, Xiaohui,Cheng, Ching-Yu,Ng, Maggie C.Y.,Smith, Albert V.,Rossin, Elizabeth J.,Segrè,, Ayellet V.,Davoudi, Samaneh,Ta American Diabetes Association 2019 Diabetes Vol.68 No.2
<P>To identify genetic variants associated with diabetic retinopathy (DR), we performed a large multiethnic genome-wide association study. Discovery included eight European cohorts (<I>n</I> = 3,246) and seven African American cohorts (<I>n</I> = 2,611). We meta-analyzed across cohorts using inverse-variance weighting, with and without liability threshold modeling of glycemic control and duration of diabetes. Variants with a <I>P</I> value <1 × 10<SUP>−5</SUP> were investigated in replication cohorts that included 18,545 European, 16,453 Asian, and 2,710 Hispanic subjects. After correction for multiple testing, the C allele of rs142293996 in an intron of nuclear VCP-like (<I>NVL</I>) was associated with DR in European discovery cohorts (<I>P</I> = 2.1 × 10<SUP>−9</SUP>), but did not reach genome-wide significance after meta-analysis with replication cohorts. We applied the Disease Association Protein-Protein Link Evaluator (DAPPLE) to our discovery results to test for evidence of risk being spread across underlying molecular pathways. One protein–protein interaction network built from genes in regions associated with proliferative DR was found to have significant connectivity (<I>P</I> = 0.0009) and corroborated with gene set enrichment analyses. These findings suggest that genetic variation in <I>NVL,</I> as well as variation within a protein–protein interaction network that includes genes implicated in inflammation, may influence risk for DR.</P>
Theoretical Size Controls of the Giant Phaeocystis globosa Colonies
Xiao Liu,Walker O. Smith Jr.,Kam W. Tang,Nhu Hai Doan,Ngoc Lam Nguyen 한국해양과학기술원 2015 Ocean science journal Vol.50 No.2
An unusual characteristic of the cosmopolitan haptophyte Phaeocystis globosa is its ability to form colonies of strikingly large size-up to 3 cm in diameter. The large size and the presence of a mucoid envelope are believed to contribute to the formation of dense blooms in Southeast Asia. We collected colonies of different sizes in shallow coastal waters of Viet Nam and conducted a series of measurements and experiments on individual colonies. Using these empirical data, we developed a simple carbon-based model to predict the growth and maximal size of P. globosa colonies. Our model suggests that growth of a colony from 0.2 cm to 1.4 cm (the maximal size in our samples) would take 16 days. This number, however, is strongly influenced by the maximal photosynthetic rate and other physiological parameters used in the model. The model also returns a specific growth rate of 0.30 d-1 for colonial cells, comparable to satellite estimates, but lower than have been measured for unicellular P. globosa in batch culture at similar temperatures. We attribute this low growth rate to not only the model uncertainties, but factors such as self-shading and diffusive limitation of nutrient uptake.
Wang, Young-Doo,Lee, Kyoo-Yong,Byrne, John,Smith, William James Jr.,Wozniak, Sara,Scozzafava, Michael,Lee, Joon-Hee 서울大學校 環境大學院 2003 環境論叢 Vol.41 No.-
We juxtapose river basin management practices in both the U.S. and South Korea to learn how multi-stakeholder conflicts are resolved under varying policy contexts. The cross-cultural comparison likewise enables an evaluation of conflict resolution as a means for producing socio-politically acceptable, economically sound, technologically feasible and environmentally viable delivery of safe drinking water. It is argued that conflict resolution enhances opportunities to achieve sustainability in river basin management despite very different policy and cultural circumstances. Two U.S. cases reviewed: the Delaware River Basin Commission (established in 1961) and the Susquehanna River Basin Commission (established in 1973). The two South Korean river basin cases under review are the Han and Nakdong Rivers.