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Li Y, Ling GC, Ni RB, Ni SH, Sun SN, Liu X, Deng JP, Ou-Yang XL, Li J, Xian SX, Wang LJ, Ye TC, Lu L. Association of dietary total antioxidant capacity with all-cause and cardiovascular mortality in patients with chronic kidney disease: based on two retrospective cohort studies of NHANES. Ren Fail 2023; 45:2205950. [PMID: 37259554 PMCID: PMC10236956 DOI: 10.1080/0886022x.2023.2205950] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023] Open
Abstract
BACKGROUND The relationship between dietary total antioxidant capacity (DTAC) and death risk among CKD populations remains unclear. METHODS Based on vitamin C equivalent antioxidant capacity (VCEAC) and the component dietary antioxidant index (CDAI) indices, we analyzed two cohorts to investigate the association of DTAC with all-cause and CVD mortality in CKD patients using data from National Health and Nutrition Examination Survey (2007-2018). VCEAC (n = 6330) and CDAI (n = 6300) cohorts with mortality follow-up data available through 2018 were included. Cox models with restricted cubic splines was used to model the nonlinear association between VCEAC/CDAI and outcomes in CKD patients. RESULTS Our results showed L-shaped associations of DTAC with all-cause mortality among individuals with CKD stages 1-2 in both cohorts. Compared to the lowest quartile, higher dietary total antioxidant intake was associated with lower all-cause mortality risks among CKD stages 1-2 after adjustment for covariates, with HRs (95%CI) of 1.00, 0.91 (0.71,1.17), 0.69 (0.53,0.90), and 0.70 (0.54,0.91) in VCEAC, and similar respective estimate trends in CDAI. After sensitivity and subgroup analyses, there were no benefits for patients with stage 3-5 CKD or albuminuria. Mediation analysis revealed that the proportions mediated in both cohorts were less consistent. CONCLUSIONS Moderate dietary total antioxidants intake has potential benefits for early-stage CKD patients. However, further evidence is needed to confirm whether patients with worsening CKD can benefit in the long term.
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Affiliation(s)
- Yue Li
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
- University Key Laboratory of Traditional Chinese Medicine Prevention and Treatment of Chronic Heart Failure, Guangdong Province, Guangzhou, China
| | - Gui-Chen Ling
- The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Rui-Bin Ni
- The Second Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Shi-Hao Ni
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
- University Key Laboratory of Traditional Chinese Medicine Prevention and Treatment of Chronic Heart Failure, Guangdong Province, Guangzhou, China
| | - Shu-Ning Sun
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
- University Key Laboratory of Traditional Chinese Medicine Prevention and Treatment of Chronic Heart Failure, Guangdong Province, Guangzhou, China
| | - Xin Liu
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
- University Key Laboratory of Traditional Chinese Medicine Prevention and Treatment of Chronic Heart Failure, Guangdong Province, Guangzhou, China
| | - Jian-Ping Deng
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
- University Key Laboratory of Traditional Chinese Medicine Prevention and Treatment of Chronic Heart Failure, Guangdong Province, Guangzhou, China
| | - Xiao-Lu Ou-Yang
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
- University Key Laboratory of Traditional Chinese Medicine Prevention and Treatment of Chronic Heart Failure, Guangdong Province, Guangzhou, China
| | - Jin Li
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
- University Key Laboratory of Traditional Chinese Medicine Prevention and Treatment of Chronic Heart Failure, Guangdong Province, Guangzhou, China
| | - Shao-Xiang Xian
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
- University Key Laboratory of Traditional Chinese Medicine Prevention and Treatment of Chronic Heart Failure, Guangdong Province, Guangzhou, China
| | - Ling-Jun Wang
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
- University Key Laboratory of Traditional Chinese Medicine Prevention and Treatment of Chronic Heart Failure, Guangdong Province, Guangzhou, China
| | - Tao-Chun Ye
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
- University Key Laboratory of Traditional Chinese Medicine Prevention and Treatment of Chronic Heart Failure, Guangdong Province, Guangzhou, China
| | - Lu Lu
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
- University Key Laboratory of Traditional Chinese Medicine Prevention and Treatment of Chronic Heart Failure, Guangdong Province, Guangzhou, China
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Nho JA, Shin YS, Jeong HR, Cho S, Heo HJ, Kim GH, Kim DO. Neuroprotective Effects of Phlorotannin-Rich Extract from Brown Seaweed Ecklonia cava on Neuronal PC-12 and SH-SY5Y Cells with Oxidative Stress. J Microbiol Biotechnol 2020; 30:359-367. [PMID: 31752064 PMCID: PMC9728360 DOI: 10.4014/jmb.1910.10068] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Neurodegenerative disorders in the elderly are characterized by gradual loss of memory and cognitive function. Oxidative stress caused by reactive oxygen species is associated with progressive neuronal cell damage and death in Alzheimer's disease, one of the most common neurodegenerative disorders. An edible brown seaweed, Ecklonia cava, contains a variety of biologically active compounds such as phlorotannins. In this study, we comparatively evaluated the total phenolic content, antioxidant capacity, and neuroprotective effects of the phlorotannin-rich extract from E. cava (PEEC). The total phenolic content of PEEC and dieckol was 810.8 mg gallic acid equivalents (GAE)/g and 996.6 mg GAE/g, respectively. Antioxidant capacity of PEEC was 1,233.8 mg vitamin C equivalents (VCE)/g and 392.1 mg VCE/g determined using ABTS and DPPH assays, respectively, while those of dieckol were 2,238.4 mg VCE/g and 817.7 mg VCE/g. High-performance liquid chromatography results revealed 48.08 ± 0.67 mg dieckol/g of PEEC. PEEC had neuroprotective effects in pheochromocytoma (PC-12) and human neuroblastoma (SH-SY5Y) cells against H2O2- and AAPH-induced oxidative damage, partly due to reduced intracellular oxidative stress. PEEC treatment inhibited acetylcholinesterase and butyrylcholinesterase in a dose-dependent manner. Taken together, these findings suggest that PEEC is a good source of antioxidants and neuroprotective materials.
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Affiliation(s)
- Jin Ah Nho
- Department of Food Science and Biotechnology, Kyung Hee University, Yongin 704, Republic of Korea
| | - Yong Sub Shin
- Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Ha-Ram Jeong
- Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Suengmok Cho
- Department of Food Science and Technology, Pukyong National University, Busan 4851, Republic of Korea
| | - Ho Jin Heo
- Division of Applied Life Science (BK21 Plus), Institute of Agricultural and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Gun Hee Kim
- Department of Foods and Nutrition, Duksung Women’s University, Seoul 01369, Republic of Korea
| | - Dae-Ok Kim
- Department of Food Science and Biotechnology, Kyung Hee University, Yongin 704, Republic of Korea,Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Republic of Korea,Corresponding author Phone: +82-31-201-3796 Fax: +82-31-204-8116 E-mail:
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Barroso RP, Berlim LS, Ito AS, Costa-Filho AJ. In vitro antioxidant properties of golden grass ( Syngonanthus nitens) by electron paramagnetic resonance. Food Sci Nutr 2019; 7:1353-1360. [PMID: 31024708 PMCID: PMC6475744 DOI: 10.1002/fsn3.969] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 12/19/2018] [Accepted: 01/08/2019] [Indexed: 01/19/2023] Open
Abstract
The in vitro antioxidant properties of golden grass (GG), a grass-like herb (Syngonanthus nitens), were investigated by electron paramagnetic resonance (EPR) spectroscopy. We measured the antioxidant capacity of methanolic extracts based on their ability to scavenge 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical. The kinetics of reaction between DPPH and GG extract was determined. This kinetics followed a biexponential decay, and this behavior was attributed to different flavonoids acting together as antioxidants. Isoorientin and luteolin, which are two of the eight flavonoids found in GG extract, were used to investigate kinetics of reaction between DPPH and both the flavonoids acting separately and together. The antioxidant activity of GG extract was determined in terms of the vitamin C equivalent antioxidant capacity (VCEAC). Compared to other well-known plant-based antioxidants, such as pulp and peels of fruit and vegetables, S. nitens presented a high antioxidant capacity (VCEAC = 1,485 ± 198 mg/100 g), indicating that it should be regarded as a valuable source of antioxidants and also that it may bestow health benefits when consumed.
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Affiliation(s)
- Rafael P Barroso
- Departamento de Física, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto Ribeirão Preto Brazil
| | - Leonardo S Berlim
- Departamento de Física, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto Ribeirão Preto Brazil
| | - Amando S Ito
- Departamento de Física, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto Ribeirão Preto Brazil
| | - Antonio J Costa-Filho
- Departamento de Física, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto Ribeirão Preto Brazil
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Yoo HG, Lee BH, Kim W, Lee JS, Kim GH, Chun OK, Koo SI, Kim DO. Lithospermum erythrorhizon extract protects keratinocytes and fibroblasts against oxidative stress. J Med Food 2014; 17:1189-96. [PMID: 25136892 DOI: 10.1089/jmf.2013.3088] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Oxidative stress damages dermal and epidermal cells and degrades extracellular matrix proteins, such as collagen, ultimately leading to skin aging. The present study evaluated the potential protective effect of the aqueous methanolic extract obtained from Lithospermum erythrorhizon (LE) against oxidative stress, induced by H2O2 and ultraviolet (UV) irradiation, on human keratinocyte (HaCaT) and human dermal fibroblast-neonatal (HDF-n) cells. Exposure of cells to H2O2 or UVB irradiation markedly increased oxidative stress and reduced cell viability. However, pretreatment of cells with the LE extract not only increased cell viability (up to 84.5%), but also significantly decreased oxidative stress. Further, the LE extract downregulated the expression of matrix metalloproteinase-1, an endopeptidase that degrades extracellular matrix collagen. In contrast, treatment with the LE extract did not affect the expression of procollagen type 1 in HDF-n cells exposed to UVA irradiation. Thirteen phenolic compounds, including derivatives of shikonin and caffeic acid, were identified by ultrahigh-performance liquid chromatography-electrospray ionization-tandem mass spectrometry. These results suggest that LE-derived extracts may protect oxidative-stress-induced skin aging by inhibiting degradation of skin collagen, and that this protection may derive at least in part from the antioxidant phenolics present in these extracts. Further studies are warranted to determine the potential utility of LE-derived extracts in both therapeutic and cosmetic applications.
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Affiliation(s)
- Hee Geun Yoo
- 1 Department of Food Science and Biotechnology, Kyung Hee University , Yongin, Gyeonggi, Korea
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