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Fan L, Huang R, Wu C, Cao Y, Du T, Pu G, Wang H, Zhou W, Li P, Kim SW. Defatted Rice Bran Supplementation in Diets of Finishing Pigs: Effects on Physiological, Intestinal Barrier, and Oxidative Stress Parameters. Animals (Basel) 2020; 10:ani10030449. [PMID: 32182669 PMCID: PMC7143537 DOI: 10.3390/ani10030449] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 03/03/2020] [Accepted: 03/04/2020] [Indexed: 12/22/2022] Open
Abstract
Simple Summary Most studies on dietary fiber mainly focus on the digestibility of feed nutrients and microbial flora, etc. However, insufficient attention has been paid to the regulation of immune and oxidative stress of the intestinal tract by dietary fiber. This study investigated the effects of varying levels of defatted rice bran replacing corn on physiological, intestinal barrier, and oxidative stress parameters in finishing pigs. Based on the current findings, a high diet of rice bran will not only reduce the level of inflammatory factors in the peripheral blood of finishing pigs, but also enhance the healthy level of the colon through mucin2 and keap1-Nrf2 pathways. Our results can be used as reference for dietary rice bran to improve intestinal health in finishing pigs. Abstract Rice bran is a waste product with low cost and high fiber content, giving it an added advantage over corn and soybean meal, which have to be purchased and always at a relatively higher cost. Under the background of increased attention to sustainable agriculture, it is significant to find alternative uses for this byproduct. A total of 35 finishing pigs were allotted to five dietary treatments: a control group with basal diet and four experimental diets where corn was equivalently substituted by 7%, 14%, 21%, and 28% defatted rice bran (DFRB), respectively. With increasing levels of DFRB, the neutrophil to lymphocyte ratio (NLR) linearly decreased (p < 0.05). In the jejunum, the mRNA level of nuclear factor erythroid-2 related factor-2 (Nrf2) exhibited a quadratic response (p < 0.01) with incremental levels of DFRB. In the colon, the mRNA levels of mucin 2 (MUC2), Nrf2, and NAD(P)H: quinone oxidoreductase 1 (NQO1) were upregulated (linear, p < 0.05) and heme oxygenase-1 (HO-1) was upregulated (linear, p < 0.01). Overall, using DFRB to replace corn decreased the inflammatory biomarkers of serum and showed potential function in modulating the intestinal barrier by upregulating the mRNA expression levels of MUC2 and downregulating that of Nrf2, NQO1, and HO-1 in the colon.
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Affiliation(s)
- Lijuan Fan
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China; (L.F.); (R.H.); (C.W.); (Y.C.); (T.D.); (G.P.); (H.W.); (W.Z.)
- Huaian Academy, Nanjing Agricultural University, Huaian 223003, China
| | - Ruihua Huang
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China; (L.F.); (R.H.); (C.W.); (Y.C.); (T.D.); (G.P.); (H.W.); (W.Z.)
- Huaian Academy, Nanjing Agricultural University, Huaian 223003, China
- Industrial Technology System Integration Innovation Center of Jiangsu Modern Agriculture (PIG), Nanjing 210095, China
| | - Chengwu Wu
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China; (L.F.); (R.H.); (C.W.); (Y.C.); (T.D.); (G.P.); (H.W.); (W.Z.)
- Huaian Academy, Nanjing Agricultural University, Huaian 223003, China
| | - Yang Cao
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China; (L.F.); (R.H.); (C.W.); (Y.C.); (T.D.); (G.P.); (H.W.); (W.Z.)
- Huaian Academy, Nanjing Agricultural University, Huaian 223003, China
| | - Taoran Du
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China; (L.F.); (R.H.); (C.W.); (Y.C.); (T.D.); (G.P.); (H.W.); (W.Z.)
- Huaian Academy, Nanjing Agricultural University, Huaian 223003, China
| | - Guang Pu
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China; (L.F.); (R.H.); (C.W.); (Y.C.); (T.D.); (G.P.); (H.W.); (W.Z.)
- Huaian Academy, Nanjing Agricultural University, Huaian 223003, China
| | - Huan Wang
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China; (L.F.); (R.H.); (C.W.); (Y.C.); (T.D.); (G.P.); (H.W.); (W.Z.)
- Huaian Academy, Nanjing Agricultural University, Huaian 223003, China
| | - Wuduo Zhou
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China; (L.F.); (R.H.); (C.W.); (Y.C.); (T.D.); (G.P.); (H.W.); (W.Z.)
- Industrial Technology System Integration Innovation Center of Jiangsu Modern Agriculture (PIG), Nanjing 210095, China
| | - Pinghua Li
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China; (L.F.); (R.H.); (C.W.); (Y.C.); (T.D.); (G.P.); (H.W.); (W.Z.)
- Huaian Academy, Nanjing Agricultural University, Huaian 223003, China
- Industrial Technology System Integration Innovation Center of Jiangsu Modern Agriculture (PIG), Nanjing 210095, China
- Nanjing Agricultural University’s New Rural Research and Development Corporation of Huaian City, Huaian 223003, China
- Correspondence:
| | - Sung Woo Kim
- Department of Animal Science, North Carolina State University, Raleigh, NC 27695, USA;
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Systemic Analysis of Predictive Biomarkers for Recurrence in Colorectal Cancer Patients Treated with Curative Surgery. Dig Dis Sci 2015; 60:2477-87. [PMID: 25840921 DOI: 10.1007/s10620-015-3648-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Accepted: 03/26/2015] [Indexed: 12/12/2022]
Abstract
BACKGROUND Preoperative serum systemic inflammatory response (SIR) in patients with colorectal cancer (CRC) has been reported to be a predictive biomarker of early recurrence. The molecular status of CRC, including microsatellite instability (MSI), BRAF and KRAS mutations, and tumor-infiltrating lymphocytes (TILs), has also been associated with recurrence in CRC patients treated with curative surgery. AIM We investigated the impacts of SIR status, TILs, and MSI on recurrence in curative CRC patients. METHODS In this retrospective study, we enrolled 157 patients with stage I-III CRC undergoing curative surgery, for whom preoperative neutrophil/lymphocyte ratio (NLR), platelet/lymphocyte ratio (PLR), and C-reactive protein (CRP) data were available as indicators of SIR status. Molecular status was evaluated by counting TILs as the numbers of intratumoral Foxp3- and CD8-positive T cells by immunohistochemistry. MSI status was determined using five mononucleotide repeat microsatellite markers. RESULTS Kaplan-Meier analysis of SIR indicators revealed that higher CRP, NLR, and PLR were associated with significantly poorer disease-free survival (DFS). Low levels of infiltrating CD8-positive T cells in CRC tissue was a significant predictor of poor DFS. Multivariate analysis showed that few infiltrating CD8-positive T cells and high serum CRP levels were independent predictive factors for recurrence. Furthermore, the combination of high CRP and few infiltrating CD8-positive T cells increased the predictive accuracy in these patients. CONCLUSIONS The results of this study suggest that both CRP levels in preoperative serum and CD8 T cells in CRC tissue are useful biomarkers for predicting early relapse in CRC patients treated with curative surgery.
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