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Zhang Y, Luo Y, Shi J, Xie Y, Shao H, Li Y. All-trans retinoic acid alleviates collagen-induced arthritis and promotes intestinal homeostasis. Sci Rep 2024; 14:1811. [PMID: 38245637 PMCID: PMC10799902 DOI: 10.1038/s41598-024-52322-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 01/17/2024] [Indexed: 01/22/2024] Open
Abstract
All-trans retinoic acid (ATRA) has emerged as a promising adjunctive treatment for rheumatoid arthritis. However, the mechanism by which ATRA mitigates arthritis remains unclear. In this study, we aimed to explore ATRA alleviation of arthritis and the role of ATRA in regulating intestinal homeostasis. Thus, we established a collagen-induced arthritis (CIA) model in Wistar rats. After 6 weeks of ATRA treatment, the arthritis index of CIA rats decreased, synovial inflammation was alleviated, and the disruption of Th17/Treg differentiation in peripheral blood was reversed. Additionally, the Th17/Treg ratio in the mesenteric lymph nodes decreased and the expression of Foxp3 mRNA increased and that of IL-17 mRNA decreased in the colon and ileum. Microscopically, we observed reduced intestinal inflammation. Transmission electron microscopy revealed that ATRA could repair tight junctions, which was accompanied by an increase in the expression of Claudin-1, Occludin and ZO-1. Moreover, ATRA regulated the composition of the gut microbiota, as was characterized based on the reduced abundance of Desulfobacterota and the increased abundance of Lactobacillus. In conclusion, ATRA demonstrates the potential to alleviate arthritis in CIA rats, which might be correlated with modulating the gut microbiota and regulating the intestinal immune response. Our findings provide novel insights into ATRA-mediated alleviation of arthritis.
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Affiliation(s)
- Yiqi Zhang
- Department of Nutrition and Food Hygiene, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yating Luo
- Department of Nutrition and Food Hygiene, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Jiangchun Shi
- Department of Nutrition and Food Hygiene, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yumeng Xie
- Department of Nutrition and Food Hygiene, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Huangfang Shao
- Department of Nutrition and Food Hygiene, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yun Li
- Department of Nutrition and Food Hygiene, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China.
- Healthy Food Evaluation Research Center, Sichuan University, Chengdu, China.
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Huang L, Xie Y, Jin T, Wang M, Zeng Z, Zhang L, He W, Mai Y, Lu J, Cen H. Diet-derived circulating antioxidants and risk of knee osteoarthritis, hip osteoarthritis and rheumatoid arthritis: a two-sample Mendelian randomization study. Front Med (Lausanne) 2023; 10:1147365. [PMID: 37415773 PMCID: PMC10321672 DOI: 10.3389/fmed.2023.1147365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 05/18/2023] [Indexed: 07/08/2023] Open
Abstract
Objective To examine the causal associations of diet-derived circulating antioxidants with knee osteoarthritis (OA), hip OA, and rheumatoid arthritis (RA) within the two-sample Mendelian randomization (MR) framework. Method Independent single-nucleotide polymorphisms (SNPs) significantly associated with circulating levels of diet-derived antioxidants (retinol, β-carotene, lycopene, vitamin C and vitamin E) were extracted as genetic instruments. Summary statistics of genetic instruments associated with knee OA, hip OA, and RA were obtained from corresponding genome-wide association studies (GWASs). The inverse-variance weighted (IVW) was applied as the primary analysis method, with four sensitivity analysis approaches employed to evaluate the robustness of the primary results. Results Genetically determined per unit increment of absolute circulating levels of retinol was significantly associated with a reduced risk of hip OA [odds ratio (OR) = 0.45, 95% confidence interval (CI) 0.26-0.78, p = 4.43 × 10-3], while genetically determined per unit increase in absolute circulating levels of β-carotene was suggestively associated with increased risk of RA (OR = 1.32, 95% CI 1.07-1.62, p = 9.10 × 10-3). No other causal association was found. Significant evidence for heterogeneity and pleiotropic outlier was only identified when absolute circulating vitamin C was evaluated as the exposure, whereas all sensitive analysis provided consistently non-significant results. Conclusion Our results demonstrated that genetically determined lifelong higher exposure to absolute circulating levels of retinol is associated with a decreased risk of hip OA. Further MR study with more genetic instruments for absolute circulating levels of antioxidants are needed to confirm our results.
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Affiliation(s)
- Li Huang
- Department of Emergency Intensive Care Unit, The First Affiliated Hospital of Ningbo University, Ningbo, Zhejiang, China
| | - Yanqing Xie
- Department of Cardiology, The First Affiliated Hospital of Ningbo University, Ningbo, Zhejiang, China
| | - Ting Jin
- School of Public Health, Health Science Center, Ningbo University, Ningbo, Zhejiang, China
| | - Mengqiao Wang
- School of Public Health, Health Science Center, Ningbo University, Ningbo, Zhejiang, China
| | - Zhen Zeng
- School of Public Health, Health Science Center, Ningbo University, Ningbo, Zhejiang, China
| | - Lina Zhang
- School of Public Health, Health Science Center, Ningbo University, Ningbo, Zhejiang, China
- Institute of Geriatrics, The First Affiliated Hospital of Ningbo University, Ningbo, Zhejiang, China
| | - Wenming He
- Department of Cardiology, The First Affiliated Hospital of Ningbo University, Ningbo, Zhejiang, China
- Institute of Geriatrics, The First Affiliated Hospital of Ningbo University, Ningbo, Zhejiang, China
| | - Yifeng Mai
- Institute of Geriatrics, The First Affiliated Hospital of Ningbo University, Ningbo, Zhejiang, China
| | - Jianmeng Lu
- Department of Second Spinal Surgery, The First Affiliated Hospital of Ningbo University, Ningbo, Zhejiang, China
| | - Han Cen
- Clinical Research Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
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Turesson Wadell A, Bärebring L, Hulander E, Gjertsson I, Lindqvist HM, Winkvist A. Inadequate Dietary Nutrient Intake in Patients With Rheumatoid Arthritis in Southwestern Sweden: A Cross-Sectional Study. Front Nutr 2022; 9:915064. [PMID: 35799579 PMCID: PMC9255550 DOI: 10.3389/fnut.2022.915064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 05/20/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundPatients with rheumatoid arthritis (RA), who suffer from impaired physical function and fatigue, may have difficulties with grocery shopping and preparing meals. Also, to improve symptoms, patients often experiment with diets but seldom consult a dietitian. Although this could lead to a nutritiously deprived diet, an up-to-date, thorough description of the nutrient intake in Swedish patients with RA is absent. Here, we investigated the habitual dietary energy and nutrient intake in patients with RA living in southwestern Sweden.Materials and MethodsThree-day food records performed at two time points during the ADIRA (Anti-inflammatory Diet In Rheumatoid Arthritis) trial, were used. The intake of energy and nutrients was analyzed using The Swedish Food Composition Database.ResultsA total of 62 participants (50 females, 12 males) were included in the study, where 18 participants completed one 3-day food record and 44 participants completed two 3-day food records. Median (IQR) intake of total fat was above or in the upper range of recommendations (females: 37.1 [32.5, 41.7] energy percent (E%), and males: 40.3 [37.5, 42.9] E%). Median (IQR) intake of saturated fatty acids exceeded recommendations (females: 14.9 [12.5, 17.0] E% and males: 15.4 [12.2, 17.0] E%), while median (IQR) carbohydrate and fiber intakes were below recommendations (females: 41.7 [36.3, 45.4] E% and 17.2 [12.8, 20.9] g, respectively, and males: 38.8 [35.2, 40,3] E% and 18.5 [15.7, 21.0] g, respectively). The reported intake of other macronutrients was in line with recommendations. For several micronutrients, e.g., vitamin A and D, folate, and calcium, median intake was below recommended intake. Vitamin A intake was especially low and did not reach lower intake level (LI) for 14 and 17% of females and males, respectively. For females, about 10% did not reach LI for vitamin D, calcium, and riboflavin.ConclusionWe found that patients with RA residing in southwestern Sweden reported a high intake of saturated fatty acids and low intake of fiber and several micronutrients.Clinical Trial Registration[https://clinicaltrials.gov/ct2/show/NCT02941055?term=NCT02941055&draw=2&rank=1], identifier [NCT02941055].
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Affiliation(s)
- Anna Turesson Wadell
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- *Correspondence: Anna Turesson Wadell,
| | - Linnea Bärebring
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Erik Hulander
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Inger Gjertsson
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Helen M. Lindqvist
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Anna Winkvist
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Nattagh‐Eshtivani E, Pahlavani N, Ranjbar G, Gholizadeh Navashenaq J, Salehi‐Sahlabadi A, Mahmudiono T, Nader Shalaby M, Jokar M, Nematy M, Barghchi H, Havakhah S, Maddahi M, Rashidmayvan M, Khosravi M. Does propolis have any effect on rheumatoid arthritis? A review study. Food Sci Nutr 2022; 10:1003-1020. [PMID: 35432965 PMCID: PMC9007309 DOI: 10.1002/fsn3.2684] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 11/03/2021] [Accepted: 11/07/2021] [Indexed: 02/05/2023] Open
Abstract
Rheumatoid arthritis (RA) is a chronic autoimmune disease in which inflammation and oxidative stress play a key role in its pathophysiology. Complementary therapies along with medications may be effective in the control of RA. Propolis is a natural substance extracted from beehives, which have confirmed anti-inflammatory and antioxidant effects. The present study aimed to review the possible effects of propolis on inflammation, oxidative stress, and lipid profile in patients with RA. English articles in online databases such as PubMed‑Medline, AMED, Google Scholar, EMBASE, Scopus, and Web of Science databases were searched. Pieces of evidence show that supplementation with propolis may have therapeutic effects on RA patients. Due to increased inflammation and oxidative stress in the affected joints of RA patients, propolis could inhibit the inflammatory cascades by inhibiting the nuclear factor kappa B pathway and reducing reactive oxygen species, malondialdehyde, and interleukin-17 by increasing some antioxidants. Therefore, inflammation and pain reduce, helping improve and control RA in patients. Further investigations are required with larger sample sizes and different doses of propolis to demonstrate the definite effects of propolis on various aspects of RA.
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Affiliation(s)
- Elyas Nattagh‐Eshtivani
- Student Research CommitteeMashhad University of Medical SciencesMashhadIran
- Department of NutritionSchool of MedicineMashhad University of Medical SciencesMashhadIran
| | - Naseh Pahlavani
- Health Sciences Research CenterTorbat Heydariyeh University of Medical SciencesTorbat HeydariyehIran
- Children Growth and Development Research CenterResearch Institute for Prevention of Non‐Communicable DiseaseQazvin University of Medical SciencesQazvinIran
| | - Golnaz Ranjbar
- Department of NutritionSchool of MedicineMashhad University of Medical SciencesMashhadIran
| | | | - Ammar Salehi‐Sahlabadi
- Student Research CommitteeDepartment of Clinical Nutrition and DieteticsSchool of Nutrition and Food TechnologyShahid Beheshti University of Medical SciencesTehranIran
| | - Trias Mahmudiono
- Departmentof NutritionFaculty of Public HealthUniversitas AirlanggaAirlanggaIndonesia
| | - Mohammed Nader Shalaby
- Biological Sciences and Sports Health DepartmentFaculty of Physical EducationSuez Canal UniversityIsmailiaEgypt
| | - Mohammadhassan Jokar
- Rheumatic Diseases Research CenterSchool of MedicineMashhad University of Medical SciencesMashhadIran
| | - Mohsen Nematy
- Metabolic Syndrome Research CenterMashhad University of Medical SciencesMashhadIran
| | - Hanieh Barghchi
- Student Research CommitteeMashhad University of Medical SciencesMashhadIran
- Department of NutritionSchool of MedicineMashhad University of Medical SciencesMashhadIran
| | - Shahrzad Havakhah
- Addiction and Behavioral Sciences Research CenterNorth Khorasan University of Medical SciencesBojnurdIran
| | - Mona Maddahi
- Student Research CommitteeMashhad University of Medical SciencesMashhadIran
| | | | - Maryam Khosravi
- Department of NutritionSchool of MedicineMashhad University of Medical SciencesMashhadIran
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5
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Nattagh‐Eshtivani E, Pahlavani N, Ranjbar G, Gholizadeh Navashenaq J, Salehi‐Sahlabadi A, Mahmudiono T, Nader Shalaby M, Jokar M, Nematy M, Barghchi H, Havakhah S, Maddahi M, Rashidmayvan M, Khosravi M. Does propolis have any effect on rheumatoid arthritis? A review study. Food Sci Nutr 2022. [DOI: https:/doi.org/10.1002/fsn3.2684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Affiliation(s)
- Elyas Nattagh‐Eshtivani
- Student Research Committee Mashhad University of Medical Sciences Mashhad Iran
- Department of Nutrition School of Medicine Mashhad University of Medical Sciences Mashhad Iran
| | - Naseh Pahlavani
- Health Sciences Research Center Torbat Heydariyeh University of Medical Sciences Torbat Heydariyeh Iran
- Children Growth and Development Research Center Research Institute for Prevention of Non‐Communicable Disease Qazvin University of Medical Sciences Qazvin Iran
| | - Golnaz Ranjbar
- Department of Nutrition School of Medicine Mashhad University of Medical Sciences Mashhad Iran
| | | | - Ammar Salehi‐Sahlabadi
- Student Research Committee Department of Clinical Nutrition and Dietetics School of Nutrition and Food Technology Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Trias Mahmudiono
- Departmentof Nutrition Faculty of Public Health Universitas Airlangga Airlangga Indonesia
| | - Mohammed Nader Shalaby
- Biological Sciences and Sports Health Department Faculty of Physical Education Suez Canal University Ismailia Egypt
| | - Mohammadhassan Jokar
- Rheumatic Diseases Research Center School of Medicine Mashhad University of Medical Sciences Mashhad Iran
| | - Mohsen Nematy
- Metabolic Syndrome Research Center Mashhad University of Medical Sciences Mashhad Iran
| | - Hanieh Barghchi
- Student Research Committee Mashhad University of Medical Sciences Mashhad Iran
- Department of Nutrition School of Medicine Mashhad University of Medical Sciences Mashhad Iran
| | - Shahrzad Havakhah
- Addiction and Behavioral Sciences Research Center North Khorasan University of Medical Sciences Bojnurd Iran
| | - Mona Maddahi
- Student Research Committee Mashhad University of Medical Sciences Mashhad Iran
| | | | - Maryam Khosravi
- Department of Nutrition School of Medicine Mashhad University of Medical Sciences Mashhad Iran
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6
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Nattagh‐Eshtivani E, Pahlavani N, Ranjbar G, Gholizadeh Navashenaq J, Salehi‐Sahlabadi A, Mahmudiono T, Nader Shalaby M, Jokar M, Nematy M, Barghchi H, Havakhah S, Maddahi M, Rashidmayvan M, Khosravi M. Does propolis have any effect on rheumatoid arthritis? A review study. Food Sci Nutr 2022. [DOI: https://doi.org/10.1002/fsn3.2684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Affiliation(s)
- Elyas Nattagh‐Eshtivani
- Student Research Committee Mashhad University of Medical Sciences Mashhad Iran
- Department of Nutrition School of Medicine Mashhad University of Medical Sciences Mashhad Iran
| | - Naseh Pahlavani
- Health Sciences Research Center Torbat Heydariyeh University of Medical Sciences Torbat Heydariyeh Iran
- Children Growth and Development Research Center Research Institute for Prevention of Non‐Communicable Disease Qazvin University of Medical Sciences Qazvin Iran
| | - Golnaz Ranjbar
- Department of Nutrition School of Medicine Mashhad University of Medical Sciences Mashhad Iran
| | | | - Ammar Salehi‐Sahlabadi
- Student Research Committee Department of Clinical Nutrition and Dietetics School of Nutrition and Food Technology Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Trias Mahmudiono
- Departmentof Nutrition Faculty of Public Health Universitas Airlangga Airlangga Indonesia
| | - Mohammed Nader Shalaby
- Biological Sciences and Sports Health Department Faculty of Physical Education Suez Canal University Ismailia Egypt
| | - Mohammadhassan Jokar
- Rheumatic Diseases Research Center School of Medicine Mashhad University of Medical Sciences Mashhad Iran
| | - Mohsen Nematy
- Metabolic Syndrome Research Center Mashhad University of Medical Sciences Mashhad Iran
| | - Hanieh Barghchi
- Student Research Committee Mashhad University of Medical Sciences Mashhad Iran
- Department of Nutrition School of Medicine Mashhad University of Medical Sciences Mashhad Iran
| | - Shahrzad Havakhah
- Addiction and Behavioral Sciences Research Center North Khorasan University of Medical Sciences Bojnurd Iran
| | - Mona Maddahi
- Student Research Committee Mashhad University of Medical Sciences Mashhad Iran
| | | | - Maryam Khosravi
- Department of Nutrition School of Medicine Mashhad University of Medical Sciences Mashhad Iran
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Hernández-Cruz EY, Silva-Islas CA, Maldonado PD, Pedraza-Chaverri J, Carballo-Villalobos AI. The antinociceptive effect of garlic, garlic preparations, and derivative compounds. Eur J Pain 2022; 26:947-964. [PMID: 35263014 DOI: 10.1002/ejp.1935] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 02/02/2022] [Accepted: 03/06/2022] [Indexed: 11/08/2022]
Abstract
The antinociceptive effects of garlic have shown promise in treating different chronic diseases in humans, such as knee osteoarthritis, rheumatoid arthritis, and peripheral arterial occlusive disease stage II. The most common garlic products are garlic powder (dried garlic), steam distilled garlic oils, garlic oil macerate, and aged garlic extract. These commercial products contain organosulfur compounds (OSC) that have been extensively evaluated in preclinical models and some clinical assays to treat different diseases against pain. In this review, we describe the importance of some bioactive compounds found in garlic and its role in treating pain. A systematic search of the literature in Dimensions, PubMed, Scopus, Web of Science was performed. Terms and preselected keywords relating to garlic, its derivates and organusulfur compunds in pain, were used to perform a systematic literature search. Two independent reviewers screened papers for inclusion and assessed the methodological quality. The antinociceptive activity of garlic and its OSC is related to its antioxidant and anti-inflammatory properties, which may be explained by the ability to block the synthesis of PGs, pro-inflammatory cytokines and interferon-γ, by the reduction COX- 2 activity and by increases the levels of anti-inflammatory cytokines. Besides, garlic extract is an activator of TRPA1 and TRPV1, where the principal responsible for this activation are OSC. The relationship between these pathways allows a better understanding how garlic and its derivates could be carrying out its pharmacological action over the management of acute and chronic pain and provide a base by further investigations.
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Affiliation(s)
- Estefani Yaquelin Hernández-Cruz
- Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México (UNAM), CDMX, 04510, México.,Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, CDMX, 04510, México
| | - Carlos Alfredo Silva-Islas
- Laboratorio de Patología Vascular Cerebral, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, CDMX, 14269, México
| | - Perla D Maldonado
- Laboratorio de Patología Vascular Cerebral, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, CDMX, 14269, México
| | - José Pedraza-Chaverri
- Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México (UNAM), CDMX, 04510, México
| | - Azucena Ibeth Carballo-Villalobos
- Departamento de Química Inorgánica y Nuclear, Facultad de Química, Universidad Nacional Autónoma de México (UNAM), CDMX, 04510, México
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8
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Moosavian SP, Paknahad Z, Habibagahi Z. A randomized, double-blind, placebo-controlled clinical trial, evaluating the garlic supplement effects on some serum biomarkers of oxidative stress, and quality of life in women with rheumatoid arthritis. Int J Clin Pract 2020; 74:e13498. [PMID: 32159257 DOI: 10.1111/ijcp.13498] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 02/20/2020] [Accepted: 03/09/2020] [Indexed: 01/09/2023] Open
Abstract
AIM Rheumatoid arthritis (RA), is a prevalent immune-inflammatory disease, which is associated with disabling pain. Oxidative stress might play a role in RA pathogenesis and outcomes. According to the antioxidant properties of garlic, the current study was performed to evaluate the garlic supplement effects on some serum levels of oxidative stress biomarkers, and quality of life in patients with rheumatoid arthritis. METHODS Seventy women with RA participated in this randomized, double-blind, placebo-controlled, parallel-design trial. The patients were randomly divided into two groups, receiving two tablets of either 500 mg garlic or placebo daily for 8 weeks. Serum levels of total antioxidant capacity (TAC) and malondialdehyde (MDA) and quality of life were determined at baseline and end of week 8. A health assessment questionnaire (HAQ) was used to evaluate the quality of life related to health. RESULTS Of 70 patients enrolled in the trial, 62 subjects were included in the final analysis. At the end of the study, there was a significant increase in serum levels of TAC in the garlic group as compared with the placebo group (26.58 ± 77.30 nmol of Trolox equivalent/ml vs 16.11 ± 0.92 nmol of Trolox equivalent/mL; P = .026). In addition, MDA levels were significantly decreased in the intervention group compared with the control group (-0.82 ± 1.99 nmol/mL vs 0.36 ± 2.57 nmol/mL; P = .032). Pain after activity and HAQ scores decreased in the garlic group compared with the placebo (-11.96 ± 13.43 mm vs -0.06 ± 13.41 mm; P < .001, 0.17 ± 20 vs 0.05 ± 0.15; P < .001, respectively). CONCLUSIONS The findings suggest that garlic supplementation for 8 weeks resulted in significant improvements in oxidative stress, HAQ in women with RA.
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Affiliation(s)
- Seyedeh Parisa Moosavian
- Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
- Department of Clinical Nutrition, School of Nutrition and Food Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Zamzam Paknahad
- Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
- Department of Clinical Nutrition, School of Nutrition and Food Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Zahra Habibagahi
- Department of Rheumatology, Shiraz University of Medical Sciences, Shiraz, Iran
- Autoimmune Diseases Research Center, Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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9
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Zhao JM, Chen X, Cheng K, Shi Q, Peng K. Anserine and glucosamine supplementation attenuates the levels of inflammatory markers in rats with rheumatoid arthritis. AMB Express 2020; 10:57. [PMID: 32198574 PMCID: PMC7083984 DOI: 10.1186/s13568-020-00987-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Accepted: 03/03/2020] [Indexed: 01/17/2023] Open
Abstract
Rheumatoid arthritis (RA) is an autoimmune disorder that affects the joint synovium. Anserine is a functional dipeptide containing methylhistidine and β-alanine, and is present in the brain and skeletal muscle of birds and mammals. Glucosamine is an amino sugar used in the synthesis of glycosylated proteins and lipids. We evaluated the effects of anserine and glucosamine on RA. Rats were assigned into the control group, RA group, anserine group (1 mg/kg), glucosamine group (200 mg/kg), or anserine plus glucosamine group (anserine, 1 mg/kg + glucosamine, 200 mg/kg). Treatment was continued for 45 consecutive days and was administered orally. The serum levels of catalase, glutathione peroxidase (Gpx), superoxide dismutase (SOD), reduced glutathione (GSH), lipid peroxidation, uric acid, nitric oxide, ceruloplasmin, zinc, copper, prostaglandin E2 (PGE2), matrix metalloproteinase (MMP)-3, tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and IL-6 were assayed. The mRNA and protein levels of nuclear factor (NF)-κB and inducible nitric oxide synthase (iNOS) in synovial tissue were also determined. Anserine plus glucosamine significantly increased the catalase, SOD, Gpx, GSH, and zinc levels compared to the control, anserine, and glucosamine groups. Also, anserine plus glucosamine significantly reduced the PGE2, MMP-3, TNF-α, IL-1β, and IL-6 levels compared to the control, anserine, and glucosamine groups. Furthermore, anserine plus glucosamine significantly reduced the mRNA and protein levels of NF-κB and iNOS compared to the control, anserine, and glucosamine groups. Therefore, supplementation of anserine plus glucosamine shows therapeutic potential for RA.
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10
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Zhang C, Zhang W, Shi R, Tang B, Xie S. Coix lachryma-jobi extract ameliorates inflammation and oxidative stress in a complete Freund's adjuvant-induced rheumatoid arthritis model. PHARMACEUTICAL BIOLOGY 2019; 57:792-798. [PMID: 31747811 PMCID: PMC6882456 DOI: 10.1080/13880209.2019.1687526] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Context: Adlay seed [Job's tears, Coix lachryma-jobi L. var. ma-yuen Stapf (Poaceae)] is a Traditional Chinese Medicine, which has been investigated to treat inflammatory diseases and rheumatism.Objective: This study evaluates the ameliorative effects of adlay seed extract (ASE) in a complete Freund's adjuvant (CFA)-induced rheumatoid arthritis (RA) rats.Materials and methods: The RA Sprague-Dawley rat model was induced and randomly divided into six groups with or without ASE treatment (50, 100 or 200 mg/kg). After 28 d administration, the symptoms, biochemical parameters and molecular mechanisms were investigated.Results: The values of paw oedema, PGE2 and MMP-3 decreased from 1.46 ± 0.04 to 0.66 ± 0.07 cm3, from 126.2 ± 11.48 to 79.71 ± 6.8 pg/mL and from 142.7 ± 8.36 to 86.51 ± 5.95 ng/mL, respectively; the values of body weight increased from 177.25 ± 5.94 to 205 ± 6.52 g in HASE group. In addition, treatment of ASE reduced the levels of pro-inflammatory cytokines (IL-1β, TNF-α, IL-6, MCP-1), and increased the activities of antioxidant enzyme (GSH-Px, SOD, and CAT). Furthermore, ASE could suppress the mRNA expression of COX-2 and CHI3L1 and improve the mRNA expression of CAT and GPx-1 in ankle tissues of RA rats.Discussion and conclusions: For the first time, our results indicated ASE exerts anti-RA effects via inhibiting pro-inflammatory factors and alleviating oxidative stress. Our finding sheds light on the research and development of anti-RA functional foods from adlay seed.
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Affiliation(s)
- Chunfang Zhang
- Department of Traditional Chinese Medicine, Xiang’an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Wenfeng Zhang
- Department of Orthopaedic Surgery, Yankuang Group General Hospital, Zoucheng, China
| | - Rongyu Shi
- Department of Orthopaedics, Tancheng Hospital of Traditional Chinese Medicine, Tancheng, China
| | - Bangyi Tang
- Medical College of Xiamen University, Xiamen, China
| | - Shicheng Xie
- Department of Joint Surgery, Affiliated Hospital of Jining Medical University, Shandong, China
- CONTACT Shicheng Xie Department of Joint Surgery, Affiliated Hospital of Jining Medical University, No. 89, Guhuai Road, Jining City, Shandong Province, China
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Panga V, Kallor AA, Nair A, Harshan S, Raghunathan S. Mitochondrial dysfunction in rheumatoid arthritis: A comprehensive analysis by integrating gene expression, protein-protein interactions and gene ontology data. PLoS One 2019; 14:e0224632. [PMID: 31703070 PMCID: PMC6839853 DOI: 10.1371/journal.pone.0224632] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 10/17/2019] [Indexed: 02/07/2023] Open
Abstract
Several studies have reported mitochondrial dysfunction in rheumatoid arthritis (RA). Many nuclear DNA (nDNA) encoded proteins translocate to mitochondria, but their participation in the dysfunction of this cell organelle during RA is quite unclear. In this study, we have carried out an integrative analysis of gene expression, protein-protein interactions (PPI) and gene ontology data. The analysis has identified potential implications of the nDNA encoded proteins in RA mitochondrial dysfunction. Firstly, by analysing six synovial microarray datasets of RA patients and healthy controls obtained from the gene expression omnibus (GEO) database, we found differentially expressed nDNA genes that encode mitochondrial proteins. We uncovered some of the roles of these genes in RA mitochondrial dysfunction using literature search and gene ontology analysis. Secondly, by employing gene co-expression from microarrays and collating reliable PPI from seven databases, we created the first mitochondrial PPI network that is specific to the RA synovial joint tissue. Further, we identified hubs of this network, and moreover, by integrating gene expression and network analysis, we found differentially expressed neighbours of the hub proteins. The results demonstrate that nDNA encoded proteins are (i) crucial for the elevation of mitochondrial reactive oxygen species (ROS) and (ii) involved in membrane potential, transport processes, metabolism and intrinsic apoptosis during RA. Additionally, we proposed a model relating to mitochondrial dysfunction and inflammation in the disease. Our analysis presents a novel perspective on the roles of nDNA encoded proteins in mitochondrial dysfunction, especially in apoptosis, oxidative stress-related processes and their relation to inflammation in RA. These findings provide a plethora of information for further research.
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Affiliation(s)
- Venugopal Panga
- Institute of Bioinformatics and Applied Biotechnology (IBAB), Bengaluru, Karnataka, India
- Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Ashwin Adrian Kallor
- Institute of Bioinformatics and Applied Biotechnology (IBAB), Bengaluru, Karnataka, India
| | - Arunima Nair
- Institute of Bioinformatics and Applied Biotechnology (IBAB), Bengaluru, Karnataka, India
| | - Shilpa Harshan
- Institute of Bioinformatics and Applied Biotechnology (IBAB), Bengaluru, Karnataka, India
- Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Srivatsan Raghunathan
- Institute of Bioinformatics and Applied Biotechnology (IBAB), Bengaluru, Karnataka, India
- * E-mail:
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Conte R, Forin Valvecchi F, Gracco AL, Bruno G, De Stefani A. Condylar dysfunctional remodeling and recortication: a case-control study. MINERVA STOMATOLOGICA 2019; 68:74-83. [PMID: 30854837 DOI: 10.23736/s0026-4970.19.04211-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
BACKGROUND Temporo-mandibular disorders (TMD) is a collective term comprehending different clinical issues involving masticatory muscles, temporo-mandibular joint (TMJ) and other associated structures. TMD diagnosis is not made for its pathogenesis or etiology, but mainly on clinical symptoms. Primary dysfunction develops mostly on four factors: individual predisposition, high psychomotor activity (due to stress or parafunction), occlusal instability and low or absent tissue adaptation capability. On the other hand, secondary disorders can be caused by hereditary or congenital diseases, rheumatic inflammatory diseases, autoimmune and tumoral diseases. During their function, the condyles undergo a structural adaptive and physiological remodeling, but when mechanical stress exceeds adaptive capability, dysfunctional remodeling phenomena may occur. It is characterized by significant condylar morphological modifications at the level of the head of the condyle (smaller condyle), break of cortical integrity and reduced mandibular ramus height with subsequent mandibular retrusion and articular function alteration. The aim of this study is to compare condylar recortication amount, and pain reduction after two different therapeutic protocols. METHODS This is a case-control study. Twenty TMD patients were chosen and each of them underwent a documentation protocol including extraoral and intraoral photographs, dental casts, casts mounting on the articulator to evaluate CPI (CO-CR discrepancy index) and cone beam computed tomography (CBCT) of the mandibular condyles taken in closed mouth position. For the radiographic evaluation, a Planmeca ProMax 3D Mid system was utilized with an acquiring volume of 80×80 mm dimension, exposition 90 kV, 10.0 mA, 12 seconds with a DAP (Dose Area Product) of 1094 mGy·cm2 for each condyle. The acquired volume was elaborated by the Planmeca Romexis software v. 3.2.0.R and TMJ module. Seven coronal cuts and 10 sagittal cuts were performed on the head of the condyle to highlight the amount of cortication, before and after the application of two different therapeutic protocols. Protocol number 1 (N.=10 patients) included the exclusive use of a splint, while protocol number 2 (N.=10 patients) included the use of a splint associated with pharmacological therapy (NSAIDs, antioxidant, omega 3). The revaluation was performed on asymptomatic patient after a period of 6-8 months. The pain for each patient was assessed by a Visual Analogue Scale (VAS) from 0 to 10, 0 meaning no pain and 10 the worst pain ever felt. The VAS was evaluated after 10 days from the beginning of the treatment, after 3 months and after 8 months at the end of the treatment. Statistical analyses were carried using a χ2 test (P value <0.05). RESULTS No significant differences in the amount of cortication were found in the radiographic revaluation between the two different therapeutic protocols, even though it was noticed that the use of medicaments brought to a resolution of the symptoms in a shorter period of time (P=0.00001 after 10 days; P=0.0251 after 3 months). CONCLUSIONS According to this study, pharmacological protocol in the therapy of TMD does not seem to affect condylar cortication. Medicaments although seem to accelerate the disappearance of clinic symptomatology, but more researches are needed to valid these findings.
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Affiliation(s)
- Roberto Conte
- Department of Neuroscience, University of Padua, Padua, Italy
| | | | | | - Giovanni Bruno
- Department of Neuroscience, University of Padua, Padua, Italy
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Ren SX, Zhang B, Lin Y, Ma DS, Li H. Mechanistic evaluation of anti-arthritic activity of β-methylphenylalanine in experimental rats. Biomed Pharmacother 2019; 113:108730. [PMID: 30861411 DOI: 10.1016/j.biopha.2019.108730] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 02/20/2019] [Accepted: 02/22/2019] [Indexed: 01/21/2023] Open
Abstract
Arthritis is a common chronic joint disorder, with general symptoms including stiffness and joint pain. β-methylphenylalanine is a well-known non-proteogenic unnatural amino acid. This study analyzes the anti-arthritic activity of β-methylphenylalanine in experimental rats. The experimental groups were as follows: group I, sham; group II, control; group III, 100 mg/kg of β-methylphenylalanine; and group IV, 200 mg/kg of β-methylphenylalanine. Lipid peroxidation, glutathione peroxidase (Gpx), reduced glutathione (GSH), superoxide dismutase (SOD), catalase, prostaglandin E2 (PGE2), matrix metalloproteinase-3 (MMP-3), ceruloplasmin, zinc, copper, mRNA, and protein expression of inducible nitric oxide synthase (iNOS) and nuclear factor-kappa B (NF-κB) were determined. Supplementation with β-methylphenylalanine significantly reduced lipid peroxidation, copper, PGE2 and MMP-3 levels, whereas GSH, Gpx, catalase, SOD and zinc levels were increased. Supplementation with β-methylphenylalanine significantly reduced NF-κB mRNA expression by 26% and 47.8% in groups III and IV, respectively (P < 0.045), while iNOS mRNA expression was reduced by 14.3 and 47.6% in groups III and IV, respectively. NF-κB and iNOS protein expression increased by 160% and 120% respectively, in the control rats compared to the sham rats. However, supplementation with β-methylphenylalanine significantly reduced NF-κB protein expression by 27% and 50% in groups III and IV, respectively, while iNOS protein expression was reduced by 22.7% and 45.4% in groups III and IV, respectively. Taken together, our data show that supplementation of β-methylphenylalanine was effective against arthritis in a rat model.
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Affiliation(s)
- Shi-Xiang Ren
- Department of Orthopedics, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing, 100020, China
| | - Bo Zhang
- Department of Orthopedics, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing, 100020, China
| | - Yuan Lin
- Department of Orthopedics, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing, 100020, China
| | - De-Si Ma
- Department of Orthopedics, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing, 100020, China
| | - Huan Li
- Department of Orthopedics, The First People's Hospital of Changzhou, Jiangsu Province (The Third Affiliated Hospital of Soochow University), Changzhou City, Jiangsu Province, 213003 China.
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Shishavan NG, Gargari BP, Jafarabadi MA, Kolahi S, Haggifar S, Noroozi S. Vitamin K 1 Supplementation Did Not Alter Inflammatory Markers and Clinical Status in Patients with Rheumatoid Arthritis. INT J VITAM NUTR RES 2019; 88:251-257. [PMID: 30786829 DOI: 10.1024/0300-9831/a000276] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Background: Rheumatoid arthritis (RA) is an inflammatory disorder in which the disease severity might be decreased by anti-inflammatory agents. There are several lines of evidence which support anti-inflammatory effects of vitamin K. The aim of this study was to examine whether vitamin K is a useful strategy for reducing inflammation in RA subjects. Materials and methods: In this double-blind placebo controlled trial, 58 patients with definitive RA were randomly allocated into two groups to receive vitamin K1 as phylloquinone [10 mg/day] or placebo pills for 8 weeks. Clinical status using disease activity score-28 (DAS-28) and serum concentrations of some inflammatory markers (IL-6, hs-CRP, TNFα) were assessed at baseline and at the end of intervention. Results: There were no significant differences between the two groups regarding any of the baseline characteristics. In the vitamin K1 group, a 27 % decrease in serum levels of IL-6 (P = 0.006) and a 13 % decrease in DAS-28 (P = 0.041) were observed. However, after adjusting for relevant confounders, i. e.; duration of RA, intake of folic acid supplements, energy intake, weight and baseline values of each variable, by comparing the two groups, we found no significant reduction in these markers. Conclusion: Vitamin K1 supplementation at 10 mg/day for 8 weeks had no significant effects on blood biomarkers of inflammation and disease severity of patients with rheumatoid arthritis compared with the placebo group.
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Affiliation(s)
- Neda Ghamarzad Shishavan
- 1 Department of Biochemistry and Diet Therapy, Student Research Committee, Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Bahram Pourghassem Gargari
- 2 Nutrition Research Center, Department of Biochemistry and Diet Therapy, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Asghari Jafarabadi
- 3 Department of Statistics and Epidemiology, Road Traffic Injury Prevention Research Center, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sousan Kolahi
- 4 Department of Rheumatology, Connective Tissue Diseases Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sepideh Haggifar
- 1 Department of Biochemistry and Diet Therapy, Student Research Committee, Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Soheila Noroozi
- 1 Department of Biochemistry and Diet Therapy, Student Research Committee, Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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Zou GS, Li SJ, Zheng SL, Pan X, Huang ZP. Lemon-Peel extract ameliorates rheumatoid arthritis by reducing xanthine oxidase and inflammatory cytokine levels. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.07.036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Khanna S, Padhan P, Das S, Jaiswal KS, Tripathy A, Smita S, Tripathy SK, Raghav SK, Gupta B. A Simple Colorimetric Method for Naked-Eye Detection of Circulating Cell-Free DNA Using Unlabelled Gold Nanoparticles. ChemistrySelect 2018. [DOI: 10.1002/slct.201802671] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shweta Khanna
- Disease Biology Laboratory; School of Biotechnology; Kalinga Institute of Industrial Technology (KIIT); Deemed to be University, Bhubaneswar, Odisha; 751024 India
| | - Prasanta Padhan
- Department of Rheumatology; Kalinga Institute of Medical Sciences, Bhubaneswar, Odisha; India
| | - Sourav Das
- Chemical and Bioprocess Engineering Lab; School of Chemical Technology; Kalinga Institute of Industrial Technology (KIIT); Deemed to be University, Bhubaneswar, Odisha; 751024 India
| | - Kumar Sagar Jaiswal
- Disease Biology Laboratory; School of Biotechnology; Kalinga Institute of Industrial Technology (KIIT); Deemed to be University, Bhubaneswar, Odisha; 751024 India
| | - Archana Tripathy
- Disease Biology Laboratory; School of Biotechnology; Kalinga Institute of Industrial Technology (KIIT); Deemed to be University, Bhubaneswar, Odisha; 751024 India
| | - Shuchi Smita
- Laboratory of Immuno-Genomics and Systems Biology; Institute of Life Sciences, Bhubaneswar, Odisha; India
| | - Suraj K. Tripathy
- Chemical and Bioprocess Engineering Lab; School of Chemical Technology; Kalinga Institute of Industrial Technology (KIIT); Deemed to be University, Bhubaneswar, Odisha; 751024 India
| | - Sunil Kumar Raghav
- Laboratory of Immuno-Genomics and Systems Biology; Institute of Life Sciences, Bhubaneswar, Odisha; India
| | - Bhawna Gupta
- Disease Biology Laboratory; School of Biotechnology; Kalinga Institute of Industrial Technology (KIIT); Deemed to be University, Bhubaneswar, Odisha; 751024 India
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Synergistic effect of glucosamine and vitamin E against experimental rheumatoid arthritis in neonatal rats. Biomed Pharmacother 2018; 105:835-840. [DOI: 10.1016/j.biopha.2018.05.136] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 05/28/2018] [Accepted: 05/28/2018] [Indexed: 11/18/2022] Open
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Wang S, Tian S, Li M, Li Z. Methionine attenuates the intensity of rheumatoid arthritis by downregulating NF-κB and iNOS expression in neonatal rats. 3 Biotech 2018; 8:303. [PMID: 30002993 DOI: 10.1007/s13205-018-1311-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 06/16/2018] [Indexed: 12/19/2022] Open
Abstract
The present study investigated the anti-arthritic effects of methionine in neonatal rats. Rats were divided into four groups, with six rats in each group. The rats were administered methionine (150- or 300-mg/kg body weight) orally for 45 consecutive days. The expression levels of catalase, superoxide dismutase (SOD), reduced glutathione (GSH), lipid peroxidation, glutathione peroxidase (Gpx), prostaglandin E2 (PGE2), matrix metalloproteinase-3, uric acid, nitric oxide (NO), ceruloplasmin, inducible nitric oxide synthase (iNOS), and nuclear factor (NF)-κB were determined in rheumatoid arthritis-induced neonatal rats. The levels of SOD, catalase, Gpx, and GSH were substantially reduced in control rats, while the levels of other parameters were increased in control neonatal rats. However, methionine supplementation significantly increased (more than 40%) the levels of SOD, catalase, Gpx, and GSH in neonatal rats. The levels of lipid peroxidation, uric acid, ceruloplasmin, NO, and PGE2 were significantly reduced following methionine supplementation. Furthermore, NF-κB mRNA expression was substantially reduced up to 51.7% in the 300-mg/kg methionine group, whereas the mRNA expression of iNOS was reduced up to 43.5% in the 300-mg/kg methionine group. NF-κB protein expression was substantially reduced up to 45.8% in the 300-mg/kg methionine group, whereas the protein expression of iNOS was reduced up to 45.4% in the 300-mg/kg methionine group. Taken together, these data suggest that methionine supplementation was effective against rheumatoid arthritis.
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Affiliation(s)
- Shi Wang
- 1Department of Pediatrics, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430016 Hubei China
| | - Shenglan Tian
- 2The Hospital of Wuhan University of Science and Technology, Wuhan, 430065 Hubei China
| | - Mingzhe Li
- 3Department of Human Anatomy, Medical School, Wuhan University of Science and Technology, Wuhan, 430065 Hubei China
| | - Zhichao Li
- 4Department of Rheumatology and Immunology, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430016 Hubei China
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Shavandi A, Bekhit AEDA, Saeedi P, Izadifar Z, Bekhit AA, Khademhosseini A. Polyphenol uses in biomaterials engineering. Biomaterials 2018; 167:91-106. [PMID: 29567389 PMCID: PMC5973878 DOI: 10.1016/j.biomaterials.2018.03.018] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Revised: 02/21/2018] [Accepted: 03/12/2018] [Indexed: 12/26/2022]
Abstract
Polyphenols are micronutrients obtained from diet that have been suggested to play an important role in health. The health benefits of polyphenols and their protective effects in food systems as antioxidant compounds are well known and have been extensively investigated. However, their functional roles as a "processing cofactor" in tissue engineering applications are less widely known. This review focuses on the functionality of polyphenols and their application in biomaterials. Polyphenols have been used to stabilize collagen and to improve its resistance to degradation in biological systems. Therefore, they have been proposed to improve the performance of biomedical devices used in cardiovascular systems by improving the mechanical properties of grafted heart valves, enhancing microcirculation through the relaxation of the arterial walls and improving the capillary blood flow and pressure resistance. Polyphenols have been found to stimulate bone formation, mineralization, as well as the proliferation, differentiation, and the survival of osteoblasts. These effects are brought about by the stimulatory effect of polyphenols on osteoblast cells and their protective effect against oxidative stress and inflammatory cytokines. In addition, polyphenols inhibit the differentiation of the osteoclast cells. Collectively, these actions lead to promote bone formation and to reduce bone resorption, respectively. Moreover, polyphenols can increase the cross-linking of dentine and hence its mechanical stability. Overall, polyphenols provide interesting properties that will stimulate further research in the bioengineering field.
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Affiliation(s)
- Amin Shavandi
- Department of Food Science, University of Otago, Dunedin, New Zealand.
| | | | - Pouya Saeedi
- Department of Human Nutrition, University of Otago, Dunedin, New Zealand
| | - Zohreh Izadifar
- The Lunenfeld-Tanenbaum Research Institute, University of Toronto, Toronto, Canada
| | - Adnan A Bekhit
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Alexandria, Alexandria, Egypt; Pharmacy Program, Allied Health Department, College of Health Sciences, University of Bahrain, P.O. Box 32038, Kingdom of Bahrain
| | - Ali Khademhosseini
- Department of Bioengineering, Department of Chemical and Biomolecular Engineering, Henry Samueli School of Engineering and Applied Sciences, University of California-Los Angeles, Los Angeles, CA, USA; Department of Radiology, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, CA, USA; Center for Minimally Invasive Therapeutics (C-MIT), University of California-Los Angeles, Los Angeles, CA, USA; California NanoSystems Institute (CNSI), University of California-Los Angeles, Los Angeles, CA, USA.
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Berube LT, Kiely M, Yazici Y, Woolf K. Diet quality of individuals with rheumatoid arthritis using the Healthy Eating Index (HEI)-2010. Nutr Health 2017; 23:17-24. [PMID: 28112038 DOI: 10.1177/0260106016688223] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Rheumatoid arthritis (RA) afflicts approximately 1.5 million American adults and is a major cause of disability. As disease severity worsens, individuals with RA may experience functional decline that can impact dietary intake. OBJECTIVE The objective of this study is to assess the diet quality of individuals with RA using the Healthy Eating Index (HEI)-2010 and examine associations between diet quality and disease activity and functional status. METHODS This cross-sectional study assessed diet quality and disease activity and functional status in adults with RA. Participants completed seven-day weighed food records, which were scored using the HEI-2010. Participants had a fasting blood draw and completed the Multidimensional Health Assessment Questionnaire to determine disease activity and functional status. RESULTS The mean age of individuals with RA ( N = 84) was 53 ± 14 years, and 86.9% were female. The mean HEI-2010 total score was 58.7 ± 15.9, with 7.1% of participants scoring "good", 58.3% "fair", and 34.5% "poor". Most participants did not adhere to recommended intakes of total fruit, total vegetables, whole grains, fatty acids, refined grains, sodium, and empty calories. An unadjusted multiple linear regression model found duration of morning stiffness and C-reactive protein concentration to be significant variables to inversely predict HEI-2010 total score. CONCLUSIONS The diet quality of many individuals with RA needs improvement and may be related to functional disability associated with RA. Healthcare providers should encourage individuals with RA to meet dietary guidelines and maintain a healthy diet. Moreover, healthcare providers should be aware of the potential impacts of functional disability on diet quality in individuals with RA.
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Affiliation(s)
- Lauren Thomas Berube
- 1 Department of Nutrition and Food Studies, New York University Steinhardt, New York, NY, USA
| | - Mary Kiely
- 2 Center for Musculoskeletal Care, New York University Langone Medical Center, New York, NY, USA
| | - Yusuf Yazici
- 3 Department of Rheumatology, New York University Hospital for Joint Diseases, New York, NY, USA
| | - Kathleen Woolf
- 1 Department of Nutrition and Food Studies, New York University Steinhardt, New York, NY, USA
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De S, Manna A, Kundu S, De Sarkar S, Chatterjee U, Sen T, Chattopadhyay S, Chatterjee M. Allylpyrocatechol Attenuates Collagen-Induced Arthritis via Attenuation of Oxidative Stress Secondary to Modulation of the MAPK, JAK/STAT, and Nrf2/HO-1 Pathways. J Pharmacol Exp Ther 2016; 360:249-259. [DOI: 10.1124/jpet.116.238444] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 11/16/2016] [Indexed: 12/18/2022] Open
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Łuczaj W, Gindzienska-Sieskiewicz E, Jarocka-Karpowicz I, Andrisic L, Sierakowski S, Zarkovic N, Waeg G, Skrzydlewska E. The onset of lipid peroxidation in rheumatoid arthritis: consequences and monitoring. Free Radic Res 2016; 50:304-13. [PMID: 26764956 DOI: 10.3109/10715762.2015.1112901] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Several epidemiological studies propose the association of rheumatoid arthritis (RA) with oxidative stress. The aim of this study was to estimate the possible onset of systemic lipid peroxidation in RA patients and its relevance for pathophysiology and monitoring of RA. Seventy-three patients with RA and 73 healthy subjects were included in the study. Lipid peroxidation was estimated by the measurement of 4-hydroxynonenal (4-HNE), 4-hydroxyhexenal, malondialdehyde, acrolein, crotonaldehyde, 4-oxononenal, and isoprostanes (8-isoPGF(2α)) levels. Cytosolic phospholipase A(2) (cPLA(2)), platelet-activating factor acetylhydrolase (PAF-AH) and glutathione peroxidase (GSH-Px) activities and vitamin E levels were also determined. In parallel, the plasma levels of phospholipid arachidonic acid (AA), linoleic acid (LA), and 4-HNE-protein adducts were monitored. Plasma of RA patients had increased vitamin E levels, but decreased GSH-Px activity and phospholipid AA and LA levels when compared to levels of the healthy subjects. The levels of aldehydes were significantly increased in the plasma of the RA patients and even more in urine. Significant increases in HNE-modified protein adducts was observed for the first time in plasma of RA patients, while the activities of PAF-AH and cPLA(2) were decreased. The 8-isoPGF(2α) levels were 9-fold higher in plasma and 3-fold higher in urine of RA patients and were related to the severity of disease. The levels of lipid peroxidation products in plasma and in urine suggest the relationship between lipid peroxidation and the development of RA. Additionally, urine 8-isoPGF(2α), plasma 4-HNE and 4-HNE-protein adducts appear to be convenient biomarkers to monitor progression of this autoimmune disease.
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Affiliation(s)
- Wojciech Łuczaj
- a Department of Analytical Chemistry , Medical University of Bialystok , Bialystok , Poland
| | | | | | - Luka Andrisic
- c Laboratory for Oxidative Stress , LabOS, Rudjer Boskovic Institute , Zagreb , Croatia
| | - Stanisław Sierakowski
- b Department of Rheumatology and Internal Medicine , Medical University of Bialystok , Bialystok , Poland
| | - Neven Zarkovic
- c Laboratory for Oxidative Stress , LabOS, Rudjer Boskovic Institute , Zagreb , Croatia
| | - Georg Waeg
- d Institute of Molecular Biosciences, Karl-Franzen's University in Graz , Graz , Austria
| | - Elżbieta Skrzydlewska
- a Department of Analytical Chemistry , Medical University of Bialystok , Bialystok , Poland
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Vaghef-Mehrabany E, Homayouni-Rad A, Alipour B, Sharif SK, Vaghef-Mehrabany L, Alipour-Ajiry S. Effects of Probiotic Supplementation on Oxidative Stress Indices in Women with Rheumatoid Arthritis: A Randomized Double-Blind Clinical Trial. J Am Coll Nutr 2015; 35:291-9. [DOI: 10.1080/07315724.2014.959208] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Stavropoulos-Kalinoglou A, Deli C, Kitas GD, Jamurtas AZ. Muscle wasting in rheumatoid arthritis: The role of oxidative stress. World J Rheumatol 2014; 4:44-53. [DOI: 10.5499/wjr.v4.i3.44] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 09/01/2014] [Accepted: 09/24/2014] [Indexed: 02/06/2023] Open
Abstract
Rheumatoid arthritis (RA), the commonest inflammatory arthritis, is a debilitating disease leading to functional and social disability. In addition to the joints, RA affects several other tissues of the body including the muscle. RA patients have significantly less muscle mass compared to the general population. Several theories have been proposed to explain this. High grade inflammation, a central component in the pathophysiology of the disease, has long been proposed as the key driver of muscle wasting. More recent findings however, indicate that inflammation on its own cannot fully explain the high prevalence of muscle wasting in RA. Thus, the contribution of other potential confounders, such as nutrition and physical activity, has also been studied. Results indicate that they play a significant role in muscle wasting in RA, but again neither of these factors seems to be able to fully explain the condition. Oxidative stress is one of the major mechanisms thought to contribute to the development and progression of RA but its potential contribution to muscle wasting in these patients has received limited attention. Oxidative stress has been shown to promote muscle wasting in healthy populations and people with several chronic conditions. Moreover, all of the aforementioned potential contributors to muscle wasting in RA (i.e., inflammation, nutrition, and physical activity) may promote pro- or anti-oxidative mechanisms. This review aims to highlight the importance of oxidative stress as a driving mechanism for muscle wasting in RA and discusses potential interventions that may promote muscle regeneration via reduction in oxidative stress.
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Xiong RB, Li Q, Wan WR, Guo JQ, Luo BDE, Gan L. Effects and mechanisms of vitamin A and vitamin E on the levels of serum leptin and other related cytokines in rats with rheumatoid arthritis. Exp Ther Med 2014; 8:499-504. [PMID: 25009608 PMCID: PMC4079452 DOI: 10.3892/etm.2014.1777] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2013] [Accepted: 02/24/2014] [Indexed: 01/23/2023] Open
Abstract
Leptin has been identified as an important cytokine in the inflammatory networks of rheumatoid arthritis (RA). Higher serum leptin levels may accelerate the development of RA. This study aimed to examine the effects of vitamin A (VitA) and vitamin E (VitE) on the levels of leptin and other related experimental and clinical indices, and to explore the mechanisms of these effects through the Janus kinase/signal transducer and activator of transcription (STAT) signal transduction pathway in rats with collagen-induced arthritis (CIA). CIA model rats were established by the intradermal injection of bovine type II collagen emulsified in incomplete Freund’s adjuvant, followed by a booster intradermal injection. Four weeks later, the CIA model rats were treated with 42.86 μg retinol equivalents/kg body weight (b.w.) VitA or 200 mg/kg b.w. VitE for four weeks. The levels of leptin, tumor necrosis factor-α (TNF-α), interleukin (IL)-6, IL-10, IL-4, C-reactive protein (CRP) and rheumatic factor were measured by ELISA using commercial kits, and the erythrocyte sedimentation rate (ESR) was determined. In addition, the expression levels of phosphorylated (p)-STAT1, p-STAT3 and leptin in the synovium were evaluated by western blot analysis. The results indicated that VitA and VitE significantly reduced the levels of leptin, TNF-α, IL-6 and CRP and the ESR and significantly increased the levels of IL-10 compared with those of the model group. Furthermore, significantly reduced p-STAT3 protein expression levels were observed in the VitA and VitE groups. In conclusion, VitA and VitE reduced the levels of serum leptin protein and other cytokines. Furthermore, VitA and VitE also reduced the p-STAT3 protein levels. The present study may provide a novel approach for the treatment of RA.
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Affiliation(s)
- Ri-Bo Xiong
- Department of Child and Adolescent Health, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Qing Li
- Department of Child and Adolescent Health, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China ; Department of Nutrition of Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Wei-Ren Wan
- Department of Child and Adolescent Health, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Jin-Qiang Guo
- Department of Child and Adolescent Health, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Bing-DE Luo
- Department of Child and Adolescent Health, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Lu Gan
- Department of Child and Adolescent Health, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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The Effects of Platycodin D, a Saponin Purified from Platycodi Radix, on Collagen-Induced DBA/1J Mouse Rheumatoid Arthritis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 2014:954508. [PMID: 24511322 PMCID: PMC3913383 DOI: 10.1155/2014/954508] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2013] [Accepted: 12/17/2013] [Indexed: 11/17/2022]
Abstract
The object of this study is to observe the effects of platycodin D, a saponin purified from Platycodi Radix, on mice collagen-induced arthritis (CIA). A daily dose of 200, 100, and 50 mg/kg platycodin D was administered orally to male DBA/1J mice for 40 days after initial collagen immunization. To ascertain the effects administering the collagen booster, CIA-related features (including body weight, poly-arthritis, knee and paw thickness, and paw weight increase) was measured from histopathological changes in the spleen, left popliteal lymph node, third digit, and the knee joint regions. CIA-related bone and cartilage damage improved significantly in the platycodin D-administered CIA mice. Additionally, myeloperoxidase (MPO) levels in the paw were reduced in platycodin D-treated CIA mice compared to CIA control groups. The level of malondialdehyde (MDA), an indicator of oxidative stress, decreased in a dose-dependent manner in the platycodin D group. Finally, the production of IL-6 and TNF-α, involved in rheumatoid arthritis pathogenesis, was suppressed by treatment with platycodin D. Taken together, these results suggest that platycodin D is a promising new effective antirheumatoid arthritis agent, exerting anti-inflammatory, antioxidative and immunomodulatory effects in CIA mice.
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Sohn KC, Kang SJ, Kim JW, Kim KY, Ku SK, Lee YJ. Effects of Calcium Gluconate, a Water Soluble Calcium Salt on the Collagen-Induced DBA/1J Mice Rheumatoid Arthritis. Biomol Ther (Seoul) 2013; 21:290-8. [PMID: 24244814 PMCID: PMC3819902 DOI: 10.4062/biomolther.2013.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 06/10/2013] [Accepted: 06/12/2013] [Indexed: 11/05/2022] Open
Abstract
This study examined the effects of calcium (Ca) gluconate on collagen-induced DBA mouse rheumatoid arthritis (CIA). A single daily dose of 200, 100 or 50 mg/kg Ca gluconate was administered orally to male DBA/1J mice for 40 days after initial collagen immunization. To ascertain the effects administering the collagen booster, CIA-related features (including body weight, poly-arthritis, knee and paw thickness, and paw weight increase) were measured from histopathological changes in the spleen, left popliteal lymph node, third digit and the knee joint regions. CIA-related bone and cartilage damage improved significantly in the Ca gluconate- administered CIA mice. Additionally, myeloperoxidase (MPO) levels in the paw were reduced in Ca gluconate-treated CIA mice compared to CIA control groups. The level of malondialdehyde (MDA), an indicator of oxidative stress, decreased in a dosedependent manner in the Ca gluconate group. Finally, the production of IL-6 and TNF-α, involved in rheumatoid arthritis pathogenesis, were suppressed by treatment with Ca gluconate. Taken together, these results suggest that Ca gluconate is a promising candidate anti-rheumatoid arthritis agent, exerting anti-inflammatory, anti-oxidative and immunomodulatory effects in CIA mice.
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Affiliation(s)
- Ki Cheul Sohn
- Department of Preventive Medicine, School of Medicine, Catholic University of Daegu, Daegu 705-718
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Al-Okbi SY. Nutraceuticals of anti-inflammatory activity as complementary therapy for rheumatoid arthritis. Toxicol Ind Health 2012; 30:738-49. [DOI: 10.1177/0748233712462468] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Rheumatoid arthritis (RA) is a chronic inflammatory disease characterized by elevated oxidative stress and inflammatory biomarkers. The severe side effects of drug used during such disease necessitate the search for new and safe approaches. Food is a rich source of antioxidants and anti-inflammatory bioactive constituents including phenolic compounds, polyunsaturated fatty acids, phytosterols, toccopherols, and carotenoids. We have a series of publications dealing with the anti-inflammatory activity of different food extracts (as nutraceuticals) in experimental animals (acute and chronic inflammation model) and in clinical study (RA patients). Fish oil, primrose oil, extracts of black cumin, fenugreek, liquorice, coriander, tomato, carrot, sweet potato, broccoli, green tea, rosemary, hazelnut, walnut, wheat germ, and date in addition to the probiotic Bifidobacterium bifidum were the nutraceuticals studied. During these studies, changes in inflammatory biomarkers (erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), seromucoids, fibrinogen, tumor necrosis factor-α (TNF-α), prostaglandin E2), oxidative stress (malondialdehyde), antioxidant status (total antioxidant capacity, vitamin C, vitamin E, retinol, β-carotene), the level of copper (Cu) and zinc (Zn) and colonic microflora in response to the administration of nutraceuticals have been assessed. Results of these studies showed that the majority of nutraceuticals studied possess beneficial effect toward chronic inflammatory diseases, which might be due to the presence of one or more of the above-mentioned phytochemicals. Conclusion: Anti-inflammatory and antioxidant nutraceuticals may serve as complementary medicine for the management of RA.
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Affiliation(s)
- Sahar Y Al-Okbi
- Food Sciences and Nutrition Department, National Research Centre, Cairo, Egypt
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Gunson MJ, Arnett GW, Milam SB. Pathophysiology and Pharmacologic Control of Osseous Mandibular Condylar Resorption. J Oral Maxillofac Surg 2012; 70:1918-34. [DOI: 10.1016/j.joms.2011.07.018] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Revised: 07/11/2011] [Accepted: 07/12/2011] [Indexed: 01/01/2023]
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Popa CV, Lungu L, Savoiu M, Bradu C, Dinoiu V, Danet AF. Total Antioxidant Activity and Phenols and Flavonoids Content of Several Plant Extracts. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2012. [DOI: 10.1080/10942912.2010.498545] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kaur S, Bijjem KRV, Sharma PL. Anti-inflammatory and antihyperalgesic effects of the combination of ibuprofen and hemin in adjuvant-induced arthritis in the Wistar rat. Inflammopharmacology 2011; 19:265-72. [PMID: 21858725 DOI: 10.1007/s10787-011-0090-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Accepted: 08/03/2011] [Indexed: 12/20/2022]
Abstract
AIM Although, pharmacological activation of heme oxygenase (HO)-1 has shown to produce ameliorative effects in various experimental models of inflammation, but such beneficial effects have not been observed in adjuvant-induced arthritis. Further, the upregulated activity of HO-1 has been implicated in the pathogenesis of adjuvant arthritis. The present study was designed to investigate the anti-inflammatory and antihyperalgesic effects of the prophylactic use of hemin alone and/or in combination with ibuprofen using adjuvant-induced arthritis in Wistar rat. METHODS Arthritis was induced by an intradermal injection of complete Freund's adjuvant (CFA) into left hind paw. Paw volume, thermal hyperalgesia, mechanical allodynia, joint stiffness and mobility behaviors (score) were measured. RESULTS Administration of ibuprofen (8.75, 17.5, 35 mg/kg/day, p.o.) and hemin (1, 5, 10 mg/kg/day, i.p.) were significantly effective in suppressing CFA-induced paw oedema, thermal and mechanical hyperalgesia, joint stiffness and mobility. The combination of low doses of ibuprofen (8.75 mg/kg, p.o.) and hemin (1 mg/kg, i.p.) significantly reduced paw volume, thermal and mechanical hyperalgesia, as compared to the individual dose of the ibuprofen and hemin alone. CONCLUSIONS Hence, it may be concluded that the prophylactic administration of either hemin produced significantly enhanced anti-inflammatory and analgesic effects. Further, concurrent low dose administration of hemin and ibuprofen produced significantly enhanced anti-inflammatory and analgesic effects, as compared to the either treatment alone, in CFA-induced arthritis in Wistar rats.
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Affiliation(s)
- Shamsherjit Kaur
- Department of Pharmacology, ISF College of Pharmacy, Moga, 142001, Punjab, India
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Comet assay and analysis of micronucleus formation in patients with rheumatoid arthritis. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2011; 721:1-5. [DOI: 10.1016/j.mrgentox.2010.11.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Revised: 10/05/2010] [Accepted: 11/05/2010] [Indexed: 11/20/2022]
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Graeser AC, Giller K, Wiegand H, Barella L, Boesch‑Saadatmandi C, Rimbach G. Synergistic chondroprotective effect of alpha-tocopherol, ascorbic acid, and selenium as well as glucosamine and chondroitin on oxidant induced cell death and inhibition of matrix metalloproteinase-3--studies in cultured chondrocytes. Molecules 2009; 15:27-39. [PMID: 20110869 PMCID: PMC6256990 DOI: 10.3390/molecules15010027] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2009] [Revised: 12/16/2009] [Accepted: 12/23/2009] [Indexed: 01/21/2023] Open
Abstract
Overproduction of reactive oxygen species and impaired antioxidant defence accompanied by chronic inflammatory processes may impair joint health. Pro‑inflammatory cytokines such as interleukin-1β (IL-1β) and tumor necrosis factor alpha (TNF-α) stimulate the expression of metalloproteinases which degrade the extracellular matrix. Little is known regarding the potential synergistic effects of natural compounds such as α‑tocopherol (α-toc), ascorbic acid (AA) and selenium (Se) on oxidant induced cell death. Furthermore studies regarding the metalloproteinase-3 inhibitory activity of glucosamine sulfate (GS) and chondroitin sulfate (CS) are scarce. Therefore we have studied the effect of α-toc (0.1–2.5 µmol/L), AA (10–50 µmol/L) and Se (1–50 nmol/L) on t-butyl hydroperoxide (t‑BHP, 100–500 µmol/L)-induced cell death in SW1353 chondrocytes. Furthermore we have determined the effect of GS and CS alone (100–500 µmol/L each) and in combination on MMP3 mRNA levels and MMP3 secretion in IL-1β stimulated chondrocytes. A combination of α-toc, AA, and Se was more potent in counteracting t‑BHP‑induced cytotoxicity as compared to the single compounds. Similarly a combination of CS and GS was more effective in inhibiting MMP3 gene expression and secretion than the single components. The inhibition of MMP3 secretion due to GS plus CS was accompanied by a decrease in TNF-α production. Combining natural compounds such as α-toc, AA, and Se as well as GS and CS seems to be a promising strategy to combat oxidative stress and cytokine induced matrix degradation in chondrocytes.
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Affiliation(s)
- Anne-Christin Graeser
- Institute of Human Nutrition and Food Science, Christian Albrechts University of Kiel, Hermann-Rodewald-Strasse 6, Kiel 24098, Germany; E-Mails: (A.-C.G.); (K.G.); (H.W.); (C.B.-S.)
| | - Katrin Giller
- Institute of Human Nutrition and Food Science, Christian Albrechts University of Kiel, Hermann-Rodewald-Strasse 6, Kiel 24098, Germany; E-Mails: (A.-C.G.); (K.G.); (H.W.); (C.B.-S.)
| | - Heike Wiegand
- Institute of Human Nutrition and Food Science, Christian Albrechts University of Kiel, Hermann-Rodewald-Strasse 6, Kiel 24098, Germany; E-Mails: (A.-C.G.); (K.G.); (H.W.); (C.B.-S.)
| | - Luca Barella
- Bayer Consumer Care AG, Basel, Switzerland; E-Mail: (L.B.)
| | - Christine Boesch‑Saadatmandi
- Institute of Human Nutrition and Food Science, Christian Albrechts University of Kiel, Hermann-Rodewald-Strasse 6, Kiel 24098, Germany; E-Mails: (A.-C.G.); (K.G.); (H.W.); (C.B.-S.)
| | - Gerald Rimbach
- Institute of Human Nutrition and Food Science, Christian Albrechts University of Kiel, Hermann-Rodewald-Strasse 6, Kiel 24098, Germany; E-Mails: (A.-C.G.); (K.G.); (H.W.); (C.B.-S.)
- Author to whom correspondence should be addressed; E-Mail:
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Choi EJ, Bae SC, Yu R, Youn J, Sung MK. Dietary Vitamin E and Quercetin Modulate Inflammatory Responses of Collagen-Induced Arthritis in Mice. J Med Food 2009; 12:770-5. [DOI: 10.1089/jmf.2008.1246] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Affiliation(s)
- Eun-Jin Choi
- Department of Food and Nutrition, Sookmyung Women's University, Seoul, Republic of Korea
| | - Sang-Cheol Bae
- Department of Food Science and Nutrition, University of Ulsan, Ulsan, Republic of Korea
| | - Rina Yu
- Department of Rheumatology, The Hospital for Rheumatic Diseases, Hanyang University, Seoul, Republic of Korea
| | - Jeehee Youn
- Major in Anatomy & Cell Biology, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Mi-Kyung Sung
- Department of Food and Nutrition, Sookmyung Women's University, Seoul, Republic of Korea
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Cho ML, Heo YJ, Park MK, Oh HJ, Park JS, Woo YJ, Ju JH, Park SH, Kim HY, Min JK. Grape seed proanthocyanidin extract (GSPE) attenuates collagen-induced arthritis. Immunol Lett 2009; 124:102-10. [PMID: 19446580 DOI: 10.1016/j.imlet.2009.05.001] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2009] [Revised: 04/29/2009] [Accepted: 05/03/2009] [Indexed: 02/06/2023]
Abstract
To examine whether grape seed proanthocyanidin extract (GSPE) which is known to act as an antioxidant has therapeutic effect on collagen-induced arthritis (CIA) in mice, an animal model of rheumatoid arthritis. Mice were treated with an intraperitoneal injection of GSPE (10, 50, or 100 mg/kg) or saline. Clinical, histological, and biochemical parameters were assessed. The effects of GSPE on osteoclastogenesis were determined by tartrate-resistant acid phosphatase (TRAP) staining of the inflamed joints and bone-marrow cells cultured with the receptor activator of nuclear factor B ligand (RANKL) and macrophage colony-stimulating factor (M-CSF). Intracellular levels of hydrogen peroxide were determined using carboxy-dichlorodihydrofluorescein diacetate. GSPE treatment significantly attenuated the severity of CIA in a dose-dependent manner and reduced the histology scores for synovial inflammation, cartilage erosion, bone erosion, and the number of TRAP+ osteoclasts. GSPE treatment significantly reduced the numbers of tumor necrosis factor alpha (TNF-alpha)- or interleukin 17 (IL-17)-producing cells in the synovial tissue and the spontaneous production of TNF-alpha and IL-17 by splenocytes compared with those in the control mice. The serum levels of type-II-collagen-specific IgG2a and plasma levels of 8-isoprostane in the GSPE-treated mice were significantly lower than those in the control mice. GSPE dose-dependently suppressed osteoclastogenesis in vitro. GSPE significantly reduced hydrogen peroxide production by anti-CD3-monoclonal-antibody-stimulated CD4+ splenocytes. These results indicate that intraperitoneal injection of GSPE attenuated CIA in mice. GSPE may be useful in the treatment of rheumatoid arthritis.
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Affiliation(s)
- Mi-La Cho
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, South Korea
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Bae SC, Jung WJ, Lee EJ, Yu R, Sung MK. Effects of Antioxidant Supplements Intervention on the Level of Plasma Inflammatory Molecules and Disease Severity of Rheumatoid Arthritis Patients. J Am Coll Nutr 2009; 28:56-62. [DOI: 10.1080/07315724.2009.10719762] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Moodley D, Mody G, Patel N, Chuturgoon AA. Mitochondrial depolarisation and oxidative stress in rheumatoid arthritis patients. Clin Biochem 2008; 41:1396-401. [PMID: 18789914 DOI: 10.1016/j.clinbiochem.2008.08.072] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2008] [Revised: 08/01/2008] [Accepted: 08/08/2008] [Indexed: 01/24/2023]
Abstract
OBJECTIVES To investigate mitochondrial membrane integrity, lipid peroxidation and cytotoxicity in peripheral lymphocytes (PL) from rheumatoid arthritis (RA) patients. DESIGN AND METHODS South African black RA patients (HIV(-)) were recruited into the study. Mitochondrial membrane potential (Deltapsi(m)) was analysed in PL using the JC-1 dye distribution assay and flow cytometry. Correlations between Deltapsi(m) and clinical parameters were tested for statistical significance. Cytotoxicity (LDH) and lipid peroxidation (thiobarbituric acid reactive substances (TBARS)) was also determined. RESULTS Our findings show significantly elevated levels of cytotoxicity (p=0.0029) and lipid peroxidation (p=0.0030) in RA. A significantly higher percentage of circulating PL contained depolarised mitochondria (p=0.0003) which correlated with disease activity and C-reactive protein levels in patients. Collapse of Deltapsi(m) also negatively correlated to absolute lymphocyte counts (r=-0.4041; p=0.0197). CONCLUSION These findings suggest a possible role for mitochondrial membrane alterations in the pathology of RA.
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Affiliation(s)
- Devapragasan Moodley
- Disciplines of Medical Biochemistry, Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Private Bag 7, Congella 4013 Durban, South Africa
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Rayman MP, Pattison DJ. Dietary manipulation in musculoskeletal conditions. Best Pract Res Clin Rheumatol 2008; 22:535-61. [DOI: 10.1016/j.berh.2007.12.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Kabuyama Y, Kitamura T, Yamaki J, Homma MK, Kikuchi SI, Homma Y. Involvement of thioredoxin reductase 1 in the regulation of redox balance and viability of rheumatoid synovial cells. Biochem Biophys Res Commun 2008; 367:491-6. [PMID: 18187038 DOI: 10.1016/j.bbrc.2007.12.178] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2007] [Accepted: 12/31/2007] [Indexed: 10/22/2022]
Abstract
Rheumatoid arthritis (RA), a chronic and systemic disease of unknown etiology, is characterized by hyperplasia of synovial cells, which ultimately lead to the destruction of cartilage and bone. To elucidate the molecular mechanisms that lead to RA, we analyzed synovial cells established from patients with RA by oligonucleotide microarrays. Gene expression profiles clearly suggested that oxidative stress is enhanced in RA synovial cells, which was confirmed by measuring cellular levels of reactive oxygen species. One of the highly up-regulated proteins in RA synovial cells was thioredoxin reductase 1 (TRXR1), a protein that plays an important role in antioxidant defense system. Subsequent analysis demonstrated that TRXR1 suppresses hydrogen peroxide and inhibits apoptosis of RA synovial cells. Thus, our results reveal a novel pathophysiologic function of RA synovial cells as a generator of oxidative stress, and a self-defense mechanism against self-generated oxidative stress.
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Affiliation(s)
- Yukihito Kabuyama
- Department of Biomolecular Science, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima 960-1295, Japan
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Kalpakcioglu B, Senel K. The interrelation of glutathione reductase, catalase, glutathione peroxidase, superoxide dismutase, and glucose-6-phosphate in the pathogenesis of rheumatoid arthritis. Clin Rheumatol 2007; 27:141-5. [PMID: 17912575 DOI: 10.1007/s10067-007-0746-3] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2007] [Accepted: 08/30/2007] [Indexed: 12/16/2022]
Abstract
Rheumatoid arthritis (RA) is the most common form of inflammatory arthritis, a systemic autoimmune disease characterized by chronic inflammation of the synovial joints, ultimately leading to joint destruction and permanent disability, affecting 1% of the world population. Oxidative stress in rheumatoid inflammation, due to the fact that antioxidant systems are impaired in RA and caused by fee radicals, might have an essential role in etiology of RA. This review includes the interrelation of antioxidants against free radicals in RA patients. There is much evidence that antioxidant team that covers glutathione reductase, catalase, glutathione peroxidase, superoxide dismutase, and glucose-6-phopshate destroy reactive oxygen species and other free radicals through enzymatic as well as nonenzymatic means. The change in relative levels of antioxidants vis-à-vis free radical formation and level could be used as indicators for effective and earlier diagnosis of RA.
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Affiliation(s)
- Banu Kalpakcioglu
- Physical Therapy and Rehabilitation, Haydarpasa Numune Training and Research Hospital, Istanbul, Turkey.
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Kageyama Y, Takahashi M, Nagafusa T, Torikai E, Nagano A. Etanercept reduces the oxidative stress marker levels in patients with rheumatoid arthritis. Rheumatol Int 2007; 28:245-51. [PMID: 17661050 DOI: 10.1007/s00296-007-0419-1] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2007] [Accepted: 07/03/2007] [Indexed: 12/16/2022]
Abstract
This study was performed to evaluate the effects of the TNF-alpha inhibitor etanercept on oxidation stress markers representing DNA damage, lipid peroxidation, and protein glycosylation. Twenty-two rheumatoid arthritis (RA) patients underwent etanercept treatment. The levels of serum total, urinary total, and urinary free pentosidine, which is an advanced glycation end-product (AGE), of urinary N(epsilon)-hexanoyl lysine (N(epsilon)-HEL), and of 8-hydroxy-deoxy guanosine (8-OHdG) were measured at baseline and at 3 and 6 months after the initial treatment with etanercept. Serum total and urinary total pentosidine levels were reduced at 6 months after the initial treatment with etanercept, and urinary free pentosidine levels were reduced at 3 and 6 months. Urinary N(epsilon)-HEL levels were also reduced at 3 and 6 months, and urinary 8-OHdG levels were reduced at 6 months. Serum total and urinary total pentosidine levels in RA patients correlated with the number of swelling joints and tender joints, and urinary total pentosidine levels correlated with the Disease Activity Score using 28 joints (DAS28). This study demonstrated that etanercept acts as a regulator against pentosidine formation, oxidative DNA damage, and lipid peroxidation in RA patients.
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Affiliation(s)
- Yasunori Kageyama
- Department of Orthopaedic Surgery, Hamamatsu University School of Medicine, Handayama, Hamamatsu, Japan.
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Ozkan Y, Yardým-Akaydýn S, Sepici A, Keskin E, Sepici V, Simsek B. Oxidative status in rheumatoid arthritis. Clin Rheumatol 2006; 26:64-8. [PMID: 16565896 DOI: 10.1007/s10067-006-0244-z] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2005] [Revised: 12/23/2005] [Accepted: 12/27/2005] [Indexed: 11/24/2022]
Abstract
The insufficiency of antioxidant defense systems and the acceleration of the oxidative reactions can be results of the pro-oxidant/antioxidant imbalance in rheumatoid arthritis (RA). The aim of our study was to investigate the changes in oxidant status by measuring two different parameters; one was the level of malondialdehyde (MDA) as an index of lipid peroxidation and the other was total oxidative status; we could then compare our results with the antioxidant status, superoxide dismutase (SOD) enyzme activities. All were assessed in 22 patients with active RA and 18 age- and gender-matched control subjects. While serum MDA levels were significantly increased in patients with RA compared to the control group (p<0.03), the total oxidative status levels were decreased in patients with RA compared to the control group (p<0.008), and serum SOD activities did not show any statistical difference between the two groups. In conclusion, the increased MDA levels in our study may be important as a marker but are not sufficient to conclude that there was an increase in oxidative stress in RA patients because supporting results were not obtained from SOD and oxidative status measurements. These results give further support to the concept of oxygen free radicals playing a role in the pathogenesis of chronic inflammatory disorders, but we also consider that there is a more complex relationship than has been assumed. We think that further studies are needed to clarify these conflicting results.
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Affiliation(s)
- Yesim Ozkan
- Department of Biochemistry, Gazi University, Faculty of Pharmacy, Etiler-Ankara, Turkey.
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Abstract
INTRODUCTION Rheumatoid arthritis is a common inflammatory condition. A large number of patients seek alternative or complementary therapies of which diet is an important component. This article reviews the evidence for diet in rheumatoid arthritis along with the associated concept of oral tolerization. METHODS References were taken from Medline from 1966 to September 2004. The keywords, rheumatoid arthritis, diet, n-3 fatty acids, vitamins, and oral tolerization, were used. RESULTS Randomized controlled trials (RCTs) indicate that dietary supplementation with n-3 fatty acids provides modest symptomatic benefit in groups of patients with rheumatoid arthritis. Epidemiological studies and RCTs show cardiovascular benefits in the broader population and patients with ischemic heart disease. A number of mechanisms through which n-3 fats may reduce inflammation have been identified. In a small number of patients with rheumatoid arthritis, other dietary manipulation such as fasting, vegan, and elimination diets may have some benefit. However, many of these diets are impractical or difficult to sustain long term. CONCLUSIONS Dietary manipulation provides a means by which patients can a regain a sense of control over their disease. Dietary n-3 supplementation is practical and can be easily achieved with encapsulated or, less expensively, bottled fish oil.
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Affiliation(s)
- Lisa K Stamp
- Department of Medicine, Christchurch School of Medicine and Health Sciences, University of Otago, New Zealand.
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Henrotin Y, Kurz B, Aigner T. Oxygen and reactive oxygen species in cartilage degradation: friends or foes? Osteoarthritis Cartilage 2005; 13:643-54. [PMID: 15936958 DOI: 10.1016/j.joca.2005.04.002] [Citation(s) in RCA: 350] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2005] [Indexed: 02/02/2023]
Abstract
OBJECTIVES This review is focused on the influence of oxygen and derived reactive species on chondrocytes aging, metabolic function and chondrogenic phenotype. METHODS A systematic computer-aided search of the Medline database. RESULTS Articular cartilage is an avascular tissue, and consequently oxygen supply is reduced. Although the basal metabolic functions of the cells are well adapted to hypoxia, the chondrocyte phenotype seems to be oxygen sensitive. In vitro, hypoxia promotes the expression of the chondrogenic phenotype and cartilage-specific matrix formation, indicating that oxygen tension is probably a key parameter in chondrocyte culture, and particularly in the context of tissue engineering and stem cells transplantation. Besides the influence of oxygen itself, reactive oxygen species (ROS) play a crucial role in the regulation of a number of basic chondrocyte activities such as cell activation, proliferation and matrix remodeling. However, when ROS production exceeds the antioxidant capacities of the cell, an "oxidative stress" occurs leading to structural and functional cartilage damages like cell death and matrix degradation. CONCLUSIONS This paper is an overview of the in vitro and in vivo studies published on the influence of oxygen and derived reactive species on chondrocyte aging, metabolic function, and the chondrogenic phenotype. It shows, that oxygen and ROS play a crucial role in the control of cartilage homeostasis and that at this time, the exact role of "oxidative stress" in cartilage degradation still remains questionable.
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Affiliation(s)
- Y Henrotin
- Bone and Cartilage Research Unit, University of Liège, Institute of Pathology, Level +5, CHU Sart-Tilman, 4000 Liège, Belgium.
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El-Sohemy A, Cornelis MC, Park YW, Bae SC. Catalase and PPARgamma2 genotype and risk of rheumatoid arthritis in Koreans. Rheumatol Int 2005; 26:388-92. [PMID: 15988600 DOI: 10.1007/s00296-005-0013-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2004] [Accepted: 05/15/2005] [Indexed: 01/24/2023]
Abstract
Catalase (CAT) and peroxisome proliferator activated receptor-gamma2 (PPARgamma2) are important regulators of oxidative stress and inflammation, and may contribute to the development of rheumatoid arthritis (RA). We investigated the association between CAT and PPARgamma2 genotypes and risk and severity of RA using 474 cases and 400 controls. Genotyping for the -262C-->T polymorphism of CAT and the Pro12Ala polymorphism of PPARgamma2 was performed by PCR-RFLP analysis. Severity of RA was assessed by the anatomical stage according to Steinbrocker, and a Korean language version of a Health Assessment Questionnaire (KHAQ). No association was observed between CAT and PPARgamma2 genotypes and risk of RA. Our results suggest that genetic polymorphisms of CAT and PPARgamma2 do not play a significant role in the susceptibility to RA among Koreans.
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Affiliation(s)
- Ahmed El-Sohemy
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada
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He YH, Zhou J, Wang YS, Xiao C, Tong Y, Tang JCO, Chan ASC, Lu AP. Immunomodulation and Antioxidant Effects of Anthocyanins from Cherries on Adjuvant-Induced Arthritis in Rats. ACTA ACUST UNITED AC 2005. [DOI: 10.2165/01197065-200502020-00005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Abstract
Oxygen metabolism has an important role in the pathogenesis of rheumatoid arthritis. Reactive oxygen species (ROS) produced in the course of cellular oxidative phosphorylation, and by activated phagocytic cells during oxidative bursts, exceed the physiological buffering capacity and result in oxidative stress. The excessive production of ROS can damage protein, lipids, nucleic acids, and matrix components. They also serve as important intracellular signaling molecules that amplify the synovial inflammatory-proliferative response. Repetitive cycles of hypoxia and reoxygenation associated with changes in synovial perfusion are postulated to activate hypoxia-inducible factor-1alpha and nuclear factor-kappaB, two key transcription factors that are regulated by changes in cellular oxygenation and cytokine stimulation, and that in turn orchestrate the expression of a spectrum of genes critical to the persistence of synovitis. An understanding of the complex interactions involved in these pathways might allow the development of novel therapeutic strategies for rheumatoid arthritis.
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Affiliation(s)
- Carol A Hitchon
- Arthritis Centre and Rheumatic Diseases Research Laboratory University of Manitoba, Winnipeg, Manitoba, Canada
| | - Hani S El-Gabalawy
- Arthritis Centre and Rheumatic Diseases Research Laboratory University of Manitoba, Winnipeg, Manitoba, Canada
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Abstract
Oxidative stresses are involved in the process of chronic inflammatory diseases. The objective of this study was to evaluate and compare the anti-inflammatory activity of major dietary antioxidants. Murine RAW264.7 macrophages (4 x 10(6) cells) were incubated in DMEM containing 10% FBS supplemented with 5 to 20 microM of alpha-tocopherol, beta-carotene or quercetin for 24 hrs, and then treated with LPS for 16 hrs. The medium was collected to measure TNF-alpha, IL-6, PGE2 and nitrite. Expressions of cyclooxygenase-2(COX-2) and inducible nitric oxide synthase(iNOS) were determined using the harvested cells. Results indicate that TNF-alpha and IL-6 accumulations were significantly reduced by 5 to 20 microM quercetin treatment, and 20 microM of alpha-tocopherol treatment. Nitrite release was significantly reduced by 5 microM quercetin treatment. However, PGE2 accumulation was not affected by any of the antioxidants used. Expressions of COX-2 and iNOS were effectively reduced by 5 microM quercetin treatment. These findings indicate that dietary antioxidants possess significant anti-inflammatory activities, and quercetin is the most potent antioxidant.
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Affiliation(s)
- Won-Jin Jung
- Department of Food and Nutrition, Sookmyung Women's University, 53-12 Chungpa-dong 2-ka, Yongsan-ku , Seoul, 140-742 Korea
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