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Wolf HN, Guempelein L, Schikora J, Pauly D. Inter-tissue differences in oxidative stress susceptibility reveal a less stable endothelial barrier in the brain than in the retina. Exp Neurol 2024; 380:114919. [PMID: 39142370 DOI: 10.1016/j.expneurol.2024.114919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 07/22/2024] [Accepted: 08/10/2024] [Indexed: 08/16/2024]
Abstract
Oxidative stress can impair the endothelial barrier and thereby enable autoantibody migration in Neuromyelitis optica spectrum disorder (NMOSD). Tissue-specific vulnerability to autoantibody-mediated damage could be explained by a differential, tissue-dependent endothelial susceptibility to oxidative stress. In this study, we aim to investigate the barrier integrity and complement profiles of brain and retinal endothelial cells under oxygen-induced oxidative stress to address the question of whether the pathomechanism of NMOSD preferentially affects the brain or the retina. Primary human brain microvascular endothelial cells (HBMEC) and primary human retinal endothelial cells (HREC) were cultivated at different cell densities (2.5*104 to 2*105 cells/cm2) for real-time cell analysis. Both cell types were exposed to 100, 500 and 2500 μM H2O2. Immunostaining (CD31, VE-cadherin, ZO-1) and Western blot, as well as complement protein secretion using multiplex ELISA were performed. HBMEC and HREC cell growth phases were cell type-specific. While HBMEC cell growth could be categorized into an initial peak, proliferation phase, plateau phase, and barrier breakdown phase, HREC showed no proliferation phase, but entered the plateau phase immediately after an initial peak. The plateau phase was 7 h shorter in HREC. Both cell types displayed a short-term, dose-dependent adaptive response to H2O2. Remarkably, at 100 μM H2O2, the transcellular resistance of HBMEC exceeded that of untreated cells. 500 μM H2O2 exerted a more disruptive effect on the HBMEC transcellular resistance than on HREC. Both cell types secreted complement factors H (FH) and I (FI), with FH secretion remaining stable after 2 h, but FI secretion decreasing at higher H2O2 concentrations. The observed differences in resistance to oxidative stress between primary brain and retinal endothelial cells may have implications for further studies of NMOSD and other autoimmune diseases affecting the eye and brain. These findings may open novel perspectives for the understanding and treatment of such diseases.
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Affiliation(s)
- Hannah Nora Wolf
- Department of Experimental Ophthalmology, University Marburg, Marburg 35043, Germany.
| | - Larissa Guempelein
- Department of Experimental Ophthalmology, University Marburg, Marburg 35043, Germany.
| | - Juliane Schikora
- Department of Experimental Ophthalmology, University Marburg, Marburg 35043, Germany.
| | - Diana Pauly
- Department of Experimental Ophthalmology, University Marburg, Marburg 35043, Germany.
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Zhao M, Li X, Li F, Hu X, Wang J, Liu Y, Zhang C, Bai J, Edden RAE, Gao F, Su M, Ren F. Identification of neurotransmitter imbalances in the cingulate cortex of NMOSD patients using magnetic resonance spectroscopy. Cereb Cortex 2024; 34:bhae304. [PMID: 39073381 DOI: 10.1093/cercor/bhae304] [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: 12/23/2023] [Revised: 07/04/2024] [Accepted: 07/17/2024] [Indexed: 07/30/2024] Open
Abstract
Cognitive impairment affects 29-67% of patients with neuromyelitis optica spectrum disorder. Previous studies have reported glutamate homeostasis disruptions in astrocytes, leading to imbalances in gamma-aminobutyric acid levels. However, the association between these neurotransmitter changes and cognitive deficits remains inadequately elucidated. Point RESolved Spectroscopy and Hadamard Encoding and Reconstruction of MEGA-Edited Spectroscopy techniques were utilized to evaluate gamma-aminobutyric acid, glutamate, glutathione levels, and excitation/inhibition balance in the anterior cingulate cortex, posterior cingulate cortex, and occipital cortex of 39 neuromyelitis optica spectrum disorder patients and 41 healthy controls. Cognitive function was assessed using neurocognitive scales. Results showed decreased gamma-aminobutyric acid levels alongside increased glutamate, glutathione, and excitation/inhibition ratio in the anterior cingulate cortex and posterior cingulate cortex of neuromyelitis optica spectrum disorder patients. Specifically, within the posterior cingulate cortex of neuromyelitis optica spectrum disorder patients, decreased gamma-aminobutyric acid levels and increased excitation/inhibition ratio correlated significantly with anxiety scores, whereas glutathione levels predicted diminished executive function. The results suggest that neuromyelitis optica spectrum disorder patients exhibit dysregulation in the GABAergic and glutamatergic systems in their brains, where the excitation/inhibition imbalance potentially acts as a neuronal metabolic factor contributing to emotional disorders. Additionally, glutathione levels in the posterior cingulate cortex region may serve as predictors of cognitive decline, highlighting the potential benefits of reducing oxidative stress to safeguard cognitive function in neuromyelitis optica spectrum disorder patients.
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Affiliation(s)
- Min Zhao
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
- Department of Radiology, Linyi Central Hospital, Linyi, China
| | - Xiao Li
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
- Liaocheng People's Hospital Affiliated to Shandong First Medical University, Liaocheng, China
| | - Fuyan Li
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Xin Hu
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Jing Wang
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Yuxi Liu
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Chuanchen Zhang
- Liaocheng People's Hospital Affiliated to Shandong First Medical University, Liaocheng, China
| | - Jie Bai
- Liaocheng People's Hospital Affiliated to Shandong First Medical University, Liaocheng, China
| | - Richard A E Edden
- Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, MD, United States
- F. M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, MD, United States
| | - Fei Gao
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Meixia Su
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Fuxin Ren
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
- Liaocheng People's Hospital Affiliated to Shandong First Medical University, Liaocheng, China
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Shi L, Li D, Zhang Y, Wang J, Fu J, Liu X, Wang P. Factors influencing the degree of disability in patients with neuromyelitis optica spectrum disorders. Eur J Med Res 2023; 28:426. [PMID: 37821922 PMCID: PMC10568753 DOI: 10.1186/s40001-023-01404-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 09/28/2023] [Indexed: 10/13/2023] Open
Abstract
OBJECTIVE To investigate the factors influencing the degree of disability in patients with neuromyelitis optica spectrum disorder (NMOSD) and provide evidence for disease monitoring and clinical intervention. METHODS Eighty-four patients with NMOSD at Xuanwu Hospital Capital Medical University were enrolled in this retrospective study. Before treatment, blood was collected from all patients, and their expanded disability status scores were assessed. RESULTS Of the 84 patients assessed, 66 (78.57%) had an expanded disability status scale score < 7, and 18 (21.43%) had scores ≥ 7. The univariate analysis showed that the total bilirubin (TBil), cerebrospinal fluid albumin (CSF ALB), cerebrospinal fluid immunoglobulin G (CSF IgG), QALB, and QIgG levels in the group with scores ≥ 7 were significantly different from those with scores < 7 (P < 0.05). In addition, Spearman's correlation analysis showed a significant correlation between ALB and expanded disability status scores in patients with NMOSD (P < 0.05), and the multivariate logistic regression analysis showed that TBil was an independent factor influencing the degree of disability in patients with NMOSD (P < 0.05). The receiver operating characteristic curve was constructed using TBil values; the area under the curve of TBil was 0.729 (P < 0.01), and the best cut-off value was 11.015 g/L. Its sensitivity in predicting the severity of disability in NMOSD patients was 51.5% while its specificity was 88.9%. CONCLUSION TBil is an independent factor that influences the severity of disability in patients with NMOSD. In addition, ALB is closely related to NMOSD severity, and some factors associated with the BBB are significantly increased in severely disabled NMOSD patients.
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Affiliation(s)
- Lili Shi
- Clinical Laboratory of Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Dawei Li
- Neurology of Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yunxiu Zhang
- Clinical Laboratory of Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Jinling Wang
- Clinical Laboratory of Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Jingxuan Fu
- Clinical Laboratory of Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Xia Liu
- Clinical Laboratory of Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Peichang Wang
- Clinical Laboratory of Xuanwu Hospital, Capital Medical University, Beijing, China.
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Biter HI, Tosu AR. The Prognostic Significance of Uric Acid/Albumin Ratio in Patients with Aortic Stenosis Following Transcatheter Aortic Valve Implantation for Major Adverse Cardiac and Cerebral Events. Medicina (B Aires) 2023; 59:medicina59040686. [PMID: 37109644 PMCID: PMC10147064 DOI: 10.3390/medicina59040686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 03/17/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023] Open
Abstract
Background: The goal of this study was to examine if the uric acid/albumin ratio (UAR) could predict major adverse cardiac and cerebral events (MACCEs) such as stroke, readmission, and short-term all-cause death in aortic stenosis (AS) patients, after transcatheter aortic valve implantation (TAVI). Material and Methods: A total of 150 patients who had TAVI for AS between 2013 and 2022 were included in our study, retrospectively. Before the TAVI, each patient’s baseline uric acid/albumin was determined. The study’s major endpoint was MACCEs, which included stroke, re-hospitalization, and 12-month all-cause death. Results: The UAR was found to be higher in TAVI patients who developed MACCEs than in those who did not develop them. Multivariate Cox regression analysis revealed that the UAR (HR: 95% CI; 2.478 (1.779–3.453) p < 0.01), was an independent predictor of MACCEs in AS patients after TAVI. The optimal value of the UAR for MACCEs in AS patients following TAVI was >1.68 with 88% sensitivity and 66% specificity (AUC (the area under the curve): 0.899, p < 0.01). We noted that the AUC of UAR in predicting MACCEs was significantly higher than the AUC of albumin (AUC: 0.823) and uric acid (AUC: 0.805, respectively). Conclusion: MACCEs in AS patients who received TAVI may be predicted by high pre-procedural uric acid/albumin levels. The uric acid/albumin ratio (UAR) can be used to determine MACCEs in such patients following TAVI because it is inexpensive and straightforward to calculate inflammatory parameters.
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Di X, Wang J, Li L, Liu L. Establishment of a single-center-based early prognostic scoring system for Guillain-Barré syndrome. BMC Neurol 2023; 23:97. [PMID: 36870949 PMCID: PMC9985211 DOI: 10.1186/s12883-023-03143-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 02/27/2023] [Indexed: 03/06/2023] Open
Abstract
BACKGROUND Previous studies have developed clinical prognostic models for Guillain-Barré syndrome including EGOS and mEGOS, they have good reliability and accuracy, but individual entries are poor. This study aims to establish a scoring system to predict the early prognosis, in order to provide additional treatment for patients with poor prognosis and shorten the length of hospital stay. METHODS We retrospectively analyzed risk factors affecting the short-term prognosis of Guillain-Barré syndrome, and developed a scoring system for early determination of disease prognosis. Sixty two patients were divided into two groups based on the Hughes GBS disability score at discharge. Groups were compared for differences in gender, age at onset, antecedent infection, cranial nerve involvement, pulmonary infection, mechanical ventilation support, hyponatremia, hypoproteinemia, impaired fasting glucose, and peripheral blood neutrophil-to-lymphocyte ratio. Statistically significant factors were included in a multivariate logistic regression analysis, and a scoring system to predict the short-term prognosis was established based on the regression coefficients. The receiver operating characteristic curve of this scoring system was plotted, and the area under the ROC curve was calculated to assess the accuracy of the prediction model. RESULTS Univariate analysis revealed that age at onset, antecedent infection, pneumonia, mechanical ventilation support, hypoalbuminemia, hyponatremia, impaired fasting glucose, and elevated peripheral blood neutrophil-to-lymphocyte ratio were risk factors for poor short-term prognosis. The above factors were included in the multivariate logistic regression analysis, and pneumonia, hypoalbuminemia, and hyponatremia could be used as independent predictors. The receiver operating characteristic curve was plotted with a calculated area under the ROC curve of 82.2% (95% CI 0.775-0.950, P < 0.0001). The best cut-off value for the model score was 2, with a sensitivity of 0.9091, a specificity of 0.7255, and a Youden index of 0.6346. CONCLUSION Pneumonia, hyponatremia, and hypoalbuminemia were independent risk factors for poorer short-term prognosis in patients with Guillain-Barré syndrome. The short-term prognosis scoring system of Guillain-Barré syndrome we constructed using these variables had some predictive value, and the short-term prognosis with quantitative scores of 2 or more was worse.
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Affiliation(s)
- Xiaomeng Di
- Department of Neurology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Jiawei Wang
- Department of Neurology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Lei Li
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University; Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing, China
| | - Lei Liu
- Department of Neurology, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
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Yao Y, Yang X, Zhou Y, Xie H, Duan R, Jing L, Li Y, Guan W, Teng J, Jia Y. Comparative analysis of clinical and imaging data of first-attack neuromyelitis optica spectrum disorders with and without connective tissue disease. Front Neurol 2022; 13:969762. [PMID: 36090884 PMCID: PMC9453243 DOI: 10.3389/fneur.2022.969762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 07/29/2022] [Indexed: 12/03/2022] Open
Abstract
Background The coexistence of neuromyelitis optica spectrum disorder (NMOSD) and connective tissue disease (CTD) is well recognized. The purpose of this study was to investigate and compare the characteristics of first attack NMOSD with and without CTD. Methods A total of 113 Patients with NMOSD were included and were divided into two groups based on the presence of co-occurring CTD. Their demographic, clinical, laboratory, and image characteristics were obtained through inpatient medical records and follow-ups. Kaplan–Meier survival analysis was used to analyze the effect of CTD in NMOSD patients at the time of first recurrence. The risk factors that could predict complications of NMOSD with CTD was analyzed by binary logistic regression. The ability of homocysteine (Hcy) to predict the coexistence of NMOSD and CTD was analyzed and evaluated by the receiver operating characteristic curve. Results The demographic data, clinical features, cerebrospinal fluid analysis, and MRI findings, except relapse events (including relapse rate, number of recurrences, and time of first recurrence), were similar between the two groups. The serum lymphocyte-to-monocyte ratio and albumin levels were lower (P < 0.05), while serum erythrocyte sedimentation rate and Hcy levels were higher in patients with NMOSD with CTD than in those without CTD (P < 0.001). Kaplan–Meier survival analysis showed that the time of first recurrence in NMOSD patients complicated with CTD was earlier than that of without CTD (log rank test P = 0.035). Logistic regression revealed that serum Hcy levels (OR 1.296, 95% CI, 1.050–1.601, P = 0.016) were independently associated with the occurrence of NMOSD with CTD. The receiver operating characteristic curve area was 0.738 (95% CI, 0.616–0.859; P < 0.001) for Hcy levels. Considering the Hcy concentration of 14.07 μmol/L as the cutoff value, the sensitivity and specificity of predicting the coexistence of first-attack NMOSD and CTD were 56 and 89.8%, respectively. Conclusions When the first-attack NMOSD patients are complicated with CTD, they have a higher recurrence rate, more recurrences, earlier first recurrence, higher serum Hcy levels, and enhanced systemic inflammatory reactions. Furthermore, Hcy levels may help to screen for CTD in patients with first-attack NMOSD.
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Affiliation(s)
- Yaobing Yao
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xuan Yang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yongyan Zhou
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Haojie Xie
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ranran Duan
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Lijun Jing
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yanfei Li
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wenjuan Guan
- Department of Rheumatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Junfang Teng
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yanjie Jia
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- *Correspondence: Yanjie Jia
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Huang S, Wang J, Fan DY, Luo T, Li Y, Tu YF, Shen YY, Zeng GH, Chen DW, Wang YR, Chen LY, Wang YJ, Guo J. The association of serum uric acid with cognitive impairment and ATN biomarkers. Front Aging Neurosci 2022; 14:943380. [PMID: 35923549 PMCID: PMC9339963 DOI: 10.3389/fnagi.2022.943380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 06/29/2022] [Indexed: 11/13/2022] Open
Abstract
Background Cognitive impairment (CI) has become a worldwide health problem. The relationship between CI and uric acid (UA) is contradictory. Objective We included participants with a full spectrum of CI, from cognitively unimpaired (CU) to dementia, from the Chongqing Ageing & Dementia Study (CADS). Methods First, we identified the relationships between serum UA (sUA) and cognitive function in different stages of CI. Second, we analyzed these relationships among different stages and types of CI. Finally, we explored the association between sUA and amyloid/tangle/neurodegeneration (ATN) biomarkers. Results We recruited 427 participants from the CADS, including 382 participants with mini-mental state examination (MMSE) evaluation. The levels of sUA were positively correlated with MMSE scores (p < 0.001), and the correlation was prominent in the course of dementia and in the type of Alzheimer’s disease (AD). The levels of UA had a positive correlation with plasma amyloid-β 42 (Aβ42) (p = 0.004). Higher levels of sUA weakened the correlation of MMSE scores with CSF ATN biomarkers and the correlation of CSF Aβ42 with tau. Conclusion UA is positively correlated with cognitive function, especially in the advanced stage of AD. The probable neuroprotective effects of sUA mainly act on Aβ42 and the downstream pathological cascade.
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Affiliation(s)
- Shan Huang
- Department of Neurology, First Affiliated Hospital, Shanxi Medical University, Taiyuan, China
- First Clinical Medical College, Shanxi Medical University, Taiyuan, China
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Jun Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Dong-Yu Fan
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
- Shigatse Branch, Xinqiao Hospital, Third Military Medical University, Shigatse, China
| | - Tong Luo
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Yanli Li
- Department of Neurology, First Affiliated Hospital, Shanxi Medical University, Taiyuan, China
| | - Yun-Feng Tu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
- Department of Biomedical Engineering, Chongqing University, Chongqing, China
| | - Ying-Ying Shen
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Gui-Hua Zeng
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Dong-Wan Chen
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Ye-Ran Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Li-Yong Chen
- Department of Anaesthesiology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Yan-Jiang Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China
- Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences (CAS), Shanghai, China
- *Correspondence: Yan-Jiang Wang,
| | - Junhong Guo
- Department of Neurology, First Affiliated Hospital, Shanxi Medical University, Taiyuan, China
- Junhong Guo,
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Oskay T, Keskin C, Özen M. Antioxidant and inflammatory biomarkers in Herpes Zoster. J Med Virol 2022; 94:3924-3929. [DOI: 10.1002/jmv.27781] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/14/2022] [Accepted: 04/11/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Tuba Oskay
- ¹Dermatology DepartmentBayındır Health GroupAnkaraTurkey
| | - Cem Keskin
- ²Internal Medicine DepartmentBayındır Health GroupAnkaraTurkey
| | - Mehmet Özen
- ³Hematology DepartmentBayındır Health GroupAnkaraTurkey
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Sanz-Morello B, Ahmadi H, Vohra R, Saruhanian S, Freude KK, Hamann S, Kolko M. Oxidative Stress in Optic Neuropathies. Antioxidants (Basel) 2021; 10:1538. [PMID: 34679672 PMCID: PMC8532958 DOI: 10.3390/antiox10101538] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/07/2021] [Accepted: 09/12/2021] [Indexed: 01/23/2023] Open
Abstract
Increasing evidence indicates that changes in the redox system may contribute to the pathogenesis of multiple optic neuropathies. Optic neuropathies are characterized by the neurodegeneration of the inner-most retinal neurons, the retinal ganglion cells (RGCs), and their axons, which form the optic nerve. Often, optic neuropathies are asymptomatic until advanced stages, when visual impairment or blindness is unavoidable despite existing treatments. In this review, we describe systemic and, whenever possible, ocular redox dysregulations observed in patients with glaucoma, ischemic optic neuropathy, optic neuritis, hereditary optic neuropathies (i.e., Leber's hereditary optic neuropathy and autosomal dominant optic atrophy), nutritional and toxic optic neuropathies, and optic disc drusen. We discuss aspects related to anti/oxidative stress biomarkers that need further investigation and features related to study design that should be optimized to generate more valuable and comparable results. Understanding the role of oxidative stress in optic neuropathies can serve to develop therapeutic strategies directed at the redox system to arrest the neurodegenerative processes in the retina and RGCs and ultimately prevent vision loss.
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Affiliation(s)
- Berta Sanz-Morello
- Eye Translational Research Unit, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen, Denmark; (B.S.-M.); (H.A.); (R.V.)
| | - Hamid Ahmadi
- Eye Translational Research Unit, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen, Denmark; (B.S.-M.); (H.A.); (R.V.)
- Department of Ophthalmology, Rigshospitalet, 2600 Glostrup, Denmark;
| | - Rupali Vohra
- Eye Translational Research Unit, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen, Denmark; (B.S.-M.); (H.A.); (R.V.)
- Group of Stem Cell Models for Studies of Neurodegenerative Diseases, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 1870 Frederiksberg, Denmark; (S.S.); (K.K.F.)
| | - Sarkis Saruhanian
- Group of Stem Cell Models for Studies of Neurodegenerative Diseases, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 1870 Frederiksberg, Denmark; (S.S.); (K.K.F.)
| | - Kristine Karla Freude
- Group of Stem Cell Models for Studies of Neurodegenerative Diseases, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 1870 Frederiksberg, Denmark; (S.S.); (K.K.F.)
| | - Steffen Hamann
- Department of Ophthalmology, Rigshospitalet, 2600 Glostrup, Denmark;
| | - Miriam Kolko
- Eye Translational Research Unit, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen, Denmark; (B.S.-M.); (H.A.); (R.V.)
- Department of Ophthalmology, Rigshospitalet, 2600 Glostrup, Denmark;
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Arslan B, Arslan GA, Tuncer A, Karabudak R, Dinçel AS. Evaluation of Thiol Homeostasis in Multiple Sclerosis and Neuromyelitis Optica Spectrum Disorders. Front Neurol 2021; 12:716195. [PMID: 34526962 PMCID: PMC8435830 DOI: 10.3389/fneur.2021.716195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/12/2021] [Indexed: 12/15/2022] Open
Abstract
Objectives: The aim of this pilot study was to evaluate dynamic thiol-disulfide homeostasis as a novel oxidative stress parameter in multiple sclerosis (MS), neuromyelitis optica spectrum disorders (NMOSD), and myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD) to better understand the role of thiol homeostasis in neuroimmunological diseases. Methods: A total of 85 participants were included in this study, consisting of 18 healthy controls, 52 patients diagnosed with MS, seven with NMOSD, and eight with MOGAD. We measured total thiol (–SH+-S–S–) and native thiol (–SH) levels in the serum of all the participants, and in a subset of patients (n = 11), these parameters were investigated in paired cerebrospinal fluid (CSF) and serum samples. Dynamic disulfide concentrations were calculated separately. Finally, we determined if there was any relationship between clinical features and dynamic thiol homeostasis. Results: There was a statistically significant difference between serum and CSF levels of biomarkers of thiol homeostasis. Serum total thiol (317.88 ± 66.04) and native thiol (211.61 ± 44.15) levels were significantly lower in relapsed patients compared to those in remission (368.84 ± 150.36 vs. 222.52 ± 70.59, respectively). Conclusions: Oxidative stress plays a crucial role in the physiopathology of neuroimmunological diseases. Thiol homeostasis may be useful for monitoring disease activity.
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Affiliation(s)
- Burak Arslan
- Department of Medical Biochemistry, Gazi University Faculty of Medicine, Ankara, Turkey.,Department of Medical Biochemistry, Erciş State Hospital, Van, Turkey
| | | | - Aslı Tuncer
- Department of Neurology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Rana Karabudak
- Department of Neurology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Aylin Sepici Dinçel
- Department of Medical Biochemistry, Gazi University Faculty of Medicine, Ankara, Turkey
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11
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Yan P, Tang Q, Wu Y, Wan Q, Zhang Z, Xu Y, Zhu J, Miao Y. Serum albumin was negatively associated with diabetic peripheral neuropathy in Chinese population: a cross-sectional study. Diabetol Metab Syndr 2021; 13:100. [PMID: 34526116 PMCID: PMC8444578 DOI: 10.1186/s13098-021-00718-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 09/01/2021] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Previous studies that explored the relationship of serum albumin with diabetic peripheral neuropathy (DPN) have indicated inconsistent results. Thus, the present study aimed to evaluated the association between serum albumin and DPN, defined as vibration perception threshold (VPT) values ≥ 25 V and/or inability to feel the monofilament, in Chinese patients with type 2 diabetes mellitus (T2DM). METHODS 1465 T2DM patients aged ≥ 16 years, who completed the measurement of serum albumin and DPN screening between 2012 and 2015, were included in the cross-sectional study. Correlation and multivariate logistic regression analysis models were used to evaluate the possible relationship between serum albumin and DPN. RESULTS Patients with higher quartiles of serum albumin had significantly lower VPT values and prevalence of DPN compared with those with lower quartiles (P for trend < 0.01), and there was an inverse relationship between serum albumin and VPT values and prevalence of DPN (all P < 0.01). Multivariate logistic regression analysis demonstrated that the risk of DPN was progressively decreased across serum albumin quartiles (P for trend < 0.01), and participants in the highest quartile of serum albumin were at a significantly decreased risk of DPN compared to those in the lowest quartile (odds rate: 0.311, 95% confidence intervals 0.134-0.724, P < 0.01). ROC analysis revealed that the optimal cutoff point of serum albumin for the prevalence of DPN was 39.95 g/L in patients with T2DM, with a sensitivity of 65.88% and a specificity of 66.7%. CONCLUSIONS Decreased levels of serum albumin might be correlated with increased risk of DPN in Chinese patients with T2DM. Future longitudinal studies with large samples are warranted to confirm our findings, and elucidate putative mechanisms for the association.
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Affiliation(s)
- Pijun Yan
- Department of Endocrinology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China.
| | - Qian Tang
- Department of Endocrinology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Yuru Wu
- Department of Endocrinology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Qin Wan
- Department of Endocrinology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Zhihong Zhang
- Department of General Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Yong Xu
- Department of Endocrinology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Jianhua Zhu
- Department of Endocrinology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Ying Miao
- Department of Endocrinology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China
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BEDİR G, EKMEN N. Evaluation of the relationship between disease activity and serum bilirubin, albumin, and uric acid levels in Crohn's disease. JOURNAL OF HEALTH SCIENCES AND MEDICINE 2021. [DOI: 10.32322/jhsm.979174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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13
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MÜHÜRDAROĞLU M, AĞADAYI E, KÖSEM A. Can Low Magnesium be A Rısk Factor for the Development of Polyneuropathy in Patıents With Diabetes? KONURALP TIP DERGISI 2021. [DOI: 10.18521/ktd.874172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Ye M, Zhang T, Chen Z, Chen S, Chen H. Decreased serum bilirubin levels in children with lead poisoning. J Int Med Res 2021; 49:300060521990248. [PMID: 33541176 PMCID: PMC7874351 DOI: 10.1177/0300060521990248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objective Lead is a toxic heavy metal, which causes irreversible damage in children. Oxidative stress is the underlying mechanism of lead toxicity, and monitoring oxidative stress of lead poisoning children in vivo is important. Our study aimed to investigate blood serum levels of biochemical parameters, including albumin, bilirubin, creatinine, and uric acid, which are regarded as non-enzymatic antioxidants, in children with lead poisoning. Methods We studied 355 children with lead poisoning and 355 age- and sex-matched controls. We analyzed clinical characteristics and measured serum levels of total protein, globulin, albumin, bilirubin, aspartate aminotransferase (AST), alanine aminotransferase, urea, and creatinine. Results We found that albumin, bilirubin, urea, and creatinine levels were significantly lower and AST, total protein, and globulin levels were higher in children with lead poisoning than in controls. Direct bilirubin, albumin, total protein, urea, creatinine, and AST levels were associated with lead poisoning after adjustment for other covariates. Spearman analysis showed that direct bilirubin, albumin, and urea levels were independent indicators (i.e., not related to hemoglobin or weight), while creatinine levels showed a moderate correlation with weight. Conclusion Lead interferes with the non-enzymatic antioxidant system in children, and lead poisoning results in a decrease in serum bilirubin levels.
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Affiliation(s)
- Mengsi Ye
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Tingting Zhang
- Department of Laboratory Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Zhibo Chen
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Shuo Chen
- Department of Infection Diseases, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Huale Chen
- Department of Laboratory Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
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Xie KH, Liu LL, Su CY, Huang XF, Wu BX, Liu RN, Li H, Chen QQ, He JS, Ruan YK. Low Antioxidant Status of Serum Uric Acid, Bilirubin, Albumin, and Creatinine in Patients With Benign Paroxysmal Positional Vertigo. Front Neurol 2020; 11:601695. [PMID: 33329359 PMCID: PMC7714964 DOI: 10.3389/fneur.2020.601695] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 10/12/2020] [Indexed: 12/15/2022] Open
Abstract
Objective: To investigate the roles of serum uric acid (UA), bilirubin (BIL), albumin (ALB), and creatinine (CRE) as major intravascular antioxidants, in benign paroxysmal positional vertigo (BPPV). Methods: The serum levels of UA, BIL, ALB, and CRE were retrospectively analyzed in 70 patients with new-onset idiopathic BPPV and 140 age- and sex-matched healthy controls (HCs). Results: Serum UA, BIL, ALB, and CRE levels were significantly lower in the BPPV group than the HC group. Furthermore, serum levels of BIL and ALB were significantly lower in the BPPV group when compared by sex. Multiple stepwise logistic regression revealed that a reduction in serum ALB was independently related to BPPV (odds ratio = 0.688; 95% confidence interval = 0.607– 0.780). Receiver operating characteristic analyses revealed a cut-off value of 45.15 g/L for ALB with a sensitivity of 74.29% (62.97– 83.07%) and specificity of 73.57% (65.71– 80.18%). Conclusions: Serum levels of UA, BIL, ALB, and CRE were lower in BPPV patients, indicating a lower antioxidant status. Furthermore, a reduction in serum ALB was independently associated with BPPV. These results provide insights into the possible roles of oxidative stress in the pathogenesis of BPPV.
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Affiliation(s)
- Ke-Hang Xie
- Department of Neurology, Zhuhai City Hospital of Integrated Traditional Chinese and Western Medicine, Zhuhai, China
| | - Ling-Ling Liu
- Department of Nephrology, Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Chu-Yin Su
- Department of Neurology, Zhuhai City Hospital of Integrated Traditional Chinese and Western Medicine, Zhuhai, China
| | - Xiao-Feng Huang
- Department of Neurology, Zhuhai City Hospital of Integrated Traditional Chinese and Western Medicine, Zhuhai, China
| | - Bao-Xing Wu
- Department of Neurology, Zhuhai City Hospital of Integrated Traditional Chinese and Western Medicine, Zhuhai, China
| | - Run-Ni Liu
- Department of Neurology, Zhuhai City Hospital of Integrated Traditional Chinese and Western Medicine, Zhuhai, China
| | - Hua Li
- Department of Neurology, Zhuhai City Hospital of Integrated Traditional Chinese and Western Medicine, Zhuhai, China
| | - Qing-Qing Chen
- Department of Neurology, Zhuhai City Hospital of Integrated Traditional Chinese and Western Medicine, Zhuhai, China
| | - Jia-Sheng He
- Department of Neurology, Zhuhai City Hospital of Integrated Traditional Chinese and Western Medicine, Zhuhai, China
| | - Yong-Kun Ruan
- Department of Neurology, Zhuhai City Hospital of Integrated Traditional Chinese and Western Medicine, Zhuhai, China
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Abstract
Background: The antioxidant effects of bilirubin in Parkinson's disease (PD) have recently gained much attention from the research community. However, results from these studies have been conflicting. This meta-analysis is conducted to assess the relationship between the serum bilirubin concentration and the risk of PD. Methods: Two reviewers performed a systematic literature search across five databases (MEDLINE, PubMed, EMBASE, Web of Science, and Cochrane Central Register of Controlled Trials). The case-control studies regarding bilirubin levels in PD patients published up to April 2020 were included. These studies were subjected to rigorous scrutiny and data extraction to determine the standard mean difference (SMD) and the 95% confidence interval (CI), which were analyzed using the Stata V.12.0 statistical software. Results: A total of eight studies which included 1463 PD cases and 1490 controls were incorporated into our meta-analysis. SMD analysis showed that there was a higher total bilirubin (TBIL) and direct bilirubin (DBIL) levels in PD patients compared with controls (for TBIL, SMD: 0.300, 95% CI: 0.050–0.549, P = 0.018; for DBIL, SMD: 0.395, 95% CI: 0.102–0.688, P = 0.008). However, no significant relationship was found between the serum indirect bilirubin and PD patients (SMD: −0.223, 95% CI: −0.952–0.505, P = 0.548). A subgroup analysis based on ethnicity indicated that the serum TBIL was higher in PD patients of Caucasian descent in contrast to matched healthy controls (SMD: 0.511, 95% CI: 0.324–0.698, P = 0.000, I2 = 58.0%). Conclusion: Higher serum bilirubin levels in PD patients suggest that bilirubin might play a role in the pathogenesis of PD and have the potential to be utilized as a biochemical marker for PD diagnosis and treatment.
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Chang SH, Tian XB, Wang J, Liu MQ, Huang CN, Qi Y, Zhang LJ, Gao CL, Zhang DQ, Sun LS, Yang L. Increased Cerebrospinal Fluid Uric Acid Levels in Guillain-Barré Syndrome. Front Neurol 2020; 11:589928. [PMID: 33281729 PMCID: PMC7689003 DOI: 10.3389/fneur.2020.589928] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/21/2020] [Indexed: 01/01/2023] Open
Abstract
Uric acid (UA) is a natural scavenger for peroxynitrite and can reflect antioxidant activity and oxidative stress in several neurological disorders. Changes in serum and cerebrospinal fluid (CSF) levels of UA have been reported in patients with multiple sclerosis and neuromyelitis optica spectrum disorders. The levels of UA in CSF are relatively poorly understood in patients with Guillain–Barré syndrome (GBS). It remains unclear whether UA can play an antioxidant role and reflect oxidative stress in GBS. The purpose of this study is to investigate CSF and serum UA levels in patients with GBS and their relationship with clinical characteristics. The CSF and serum UA levels were detected in 43 patients with GBS, including 14 acute inflammatory demyelinating polyneuropathy (AIDP), 6 acute motor axonal neuropathy (AMAN), 13 with acute motor and sensory axonal neuropathy (AMSAN), 7 Miller Fisher syndrome (MFS), and 3 unclassified, and 25 patients with non-inflammatory neurological disorders (NIND) as controls. Moreover, serum UA levels were also detected in 30 healthy controls. The levels of UA were measured using uricase-based methods with an automatic biochemical analyzer. CSF UA levels were significantly increased in patients with GBS (p = 0.011), particularly in patients with AIDP (p = 0.004) when compared with NIND. Among patients with GBS, CSF UA levels were higher in those with demyelination (p = 0.022), although the difference was not significant after multiple testing correction. CSF UA levels in GBS were positively correlated with serum UA levels (r = 0.455, p = 0.022) and CSF lactate (r = 0.499, p = 0.011). However, no significant correlations were found between CSF UA levels and GBS disability scores. There were no significant differences in serum UA levels among GBS, NIND, and healthy controls. These results suggest that CSF UA may be related to the pathogenesis of demyelination in patients with GBS and may be partially determined by serum UA and the impaired blood–nerve barrier.
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Affiliation(s)
- Sheng-Hui Chang
- Department of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Xiao-Bing Tian
- Department of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Jing Wang
- Department of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Ming-Qi Liu
- Department of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Chen-Na Huang
- Department of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Yuan Qi
- Department of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Lin-Jie Zhang
- Department of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Chun-Li Gao
- Department of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Da-Qi Zhang
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Li-Sha Sun
- Department of Clinical Laboratory Center, Tianjin Medical University General Hospital, Tianjin, China
| | - Li Yang
- Department of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
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ALTUNIŞIK N, TÜRKMEN D. Alopesi areatalı hastalarda serum bilirubin, ürik asit ve albumin düzeyleri. EGE TIP DERGISI 2020. [DOI: 10.19161/etd.697740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Nitti M, Furfaro AL, Mann GE. Heme Oxygenase Dependent Bilirubin Generation in Vascular Cells: A Role in Preventing Endothelial Dysfunction in Local Tissue Microenvironment? Front Physiol 2020; 11:23. [PMID: 32082188 PMCID: PMC7000760 DOI: 10.3389/fphys.2020.00023] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 01/13/2020] [Indexed: 12/22/2022] Open
Abstract
Among antioxidants in the human body, bilirubin has been recognized over the past 20 years to afford protection against different chronic conditions, including inflammation and cardiovascular disease. Moderate increases in plasma concentration and cellular bilirubin generation from metabolism of heme via heme oxygenase (HMOX) in virtually all tissues can modulate endothelial and vascular function and exert antioxidant and anti-inflammatory roles. This review aims to provide an up-to-date and critical overview of the molecular mechanisms by which bilirubin derived from plasma or from HMOX1 activation in vascular cells affects endothelial function. Understanding the molecular actions of bilirubin may critically improve the management not only of key cardiovascular diseases, but also provide insights into a broad spectrum of pathologies driven by endothelial dysfunction. In this context, therapeutic interventions aimed at mildly increasing serum bilirubin as well as bilirubin generated endogenously by endothelial HMOX1 should be considered.
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Affiliation(s)
- Mariapaola Nitti
- Department of Experimental Medicine, University of Genoa, Genoa, Italy
| | - Anna Lisa Furfaro
- Department of Experimental Medicine, University of Genoa, Genoa, Italy
| | - Giovanni E Mann
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, London, United Kingdom
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Rezaeimanesh N, Razeghi Jahromi S, Naser Moghadasi A, Rafiee P, Ghorbani Z, Beladi Moghadam N, Hekmatdoost A, Sahraian MA. Dietary total antioxidant capacity and neuromyelitis optica spectrum disorder susceptibility. ACTA ACUST UNITED AC 2019. [DOI: 10.1108/nfs-07-2019-0208] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
PurposeNeuromyelitis Optica Spectrum Disorder (NMOSD) is a rare disease with unknown risk factors. The role of oxidative stress and nutritional factors is imprecise in NMOSD development. Therefore, this paper aims to evaluate the effects of dietary total antioxidant capacity (TAC) on the odds of NMOSD.Design/methodology/approachDietary TAC was determined in 70 definite NMOSD cases and 164 healthy controls in term of Ferric Reducing Antioxidant Power (FRAP) method. A validated 168-item semi-quantitative food frequency questionnaire (FFQ) was used for dietary assessment. Three multivariate regression models were applied to analyze the odds of NMOSD across the TAC quartiles.FindingsA significant inverse association was found between dietary TAC and odds of being assigned to the NMOSD group in all three regression models. In the fully adjusted model ORs (95% CI) in the second, third and fourth quartiles of TAC vs the first quartile were as follows: 0.11 (0.04-0.29), 0.05 (0.01-0.16) and 0.01 (0.00-0.05), respectively. Odds of NMOSD also indicated a significant decreasing trend across the quartiles of dietary TAC (p-trend: <0.01). Total energy (p < 0.01) as well as consumption of vegetables (p < 0.01), whole grains (p < 0.01), tea and coffee (p < 0.01), legumes (p < 0.01) and poultry (p < 0.01) significantly increased through the TAC quartiles.Originality/valueIn the present study, a new hypothesis was proposed concerning the influence of dietary TAC on the odds of NMOSD. A diet rich in foods with high TAC can be effective in the modification of the NMOSD odds.
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Abstract
Serum concentrations of bilirubin, albumin, and uric acid (UA) play important roles in controlling oxidative stress. Until now, there are few researches related to the relationship between oxidative stress and Crohn's disease (CD); furthermore, no such study has been reported from China. Our aim was to evaluate serum bilirubin, albumin, and UA levels in CD patients and relate them to disease activity.Seventy-one patients diagnosed with CD and 125 sex- and age-matched healthy individuals were retrospectively analyzed during the same period. Clinical characteristics and laboratory parameters were analyzed in CD patients and healthy control groups.Serum levels of bilirubin, albumin, and UA in patients with CD were significantly lower than those in the healthy control group. Correlation analysis demonstrated that serum concentrations of total bilirubin, direct bilirubin, indirect bilirubin, albumin, and UA were negatively related to disease activity in patients with CD (r = -0.620, P < .001; r = -0.304, P < .05; r = -0.623, P < .001; r = -0.408, P < .01; and r = -0.296, P < .05; respectively).Serum bilirubin, albumin and UA levels were significantly lower in CD patients, suggesting potential correlations between serum bilirubin, albumin, and UA levels and disease activity in CD patients. In addition, the noninvasive biochemical index may be potential markers for assessing the disease activity of patients with CD.
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Affiliation(s)
- Qisheng Su
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, China
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Machavaram KK, Endo-Tsukude C, Terao K, Gill KL, Hatley OJ, Gardner I, Parrott N, Ducray PS. Simulating the Impact of Elevated Levels of Interleukin-6 on the Pharmacokinetics of Various CYP450 Substrates in Patients with Neuromyelitis Optica or Neuromyelitis Optica Spectrum Disorders in Different Ethnic Populations. AAPS JOURNAL 2019; 21:42. [PMID: 30887238 DOI: 10.1208/s12248-019-0309-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 02/18/2019] [Indexed: 01/05/2023]
Abstract
A physiologically based pharmacokinetic (PBPK) model was used to simulate the impact of elevated levels of interleukin (IL)-6 on the exposure of several orally administered cytochrome P450 (CYP) probe substrates (caffeine, S-warfarin, omeprazole, dextromethorphan, midazolam, and simvastatin). The changes in exposure of these substrates in subjects with rheumatoid arthritis (and hence elevated IL-6 levels) compared with healthy subjects were predicted with a reasonable degree of accuracy. The PBPK model was then used to simulate the change in oral exposure of the probe substrates in North European Caucasian, Chinese, and Japanese population of patients with neuromyelitis optica (NMO) or NMO spectrum disorder with elevated plasma IL-6 levels (up to 100 pg/mL). Moderate interactions [mean AUC fold change, ≤ 2.08 (midazolam) or 2.36 (simvastatin)] was predicted for CYP3A4 probe substrates and weak interactions (mean AUC fold change, ≤ 1.29-1.97) were predicted for CYP2C19, CYP2C9, and CYP2D6 substrates. No notable interaction was predicted with CYP1A2. Although ethnic differences led to differences in simulated exposure for some of the probe substrates, there were no marked differences in the predicted magnitude of the change in exposure following IL-6-mediated suppression of CYPs. Decreased levels of serum albumin (as reported in NMO patients) had little impact on the magnitude of the simulated IL-6-mediated drug interactions. This PBPK modeling approach allowed us to leverage knowledge from different disease and ethnic populations to make predictions of cytokine-related DDIs in a rare disease population where actual clinical studies would otherwise be difficult to conduct.
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Affiliation(s)
| | | | - Kimio Terao
- Clinical Pharmacology Department, Chugai Pharmaceutical Co., Ltd, Tokyo, Japan
| | | | | | - Iain Gardner
- Certara UK Limited, Simcyp Division, Sheffield, UK
| | - Neil Parrott
- Roche Pharma Research and Early Development, Roche Innovation Center, Basel, Switzerland
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Gümüşyayla Ş, Vural G, Yurtoğulları Çevik Ş, Akdeniz G, Neselioğlu S, Deniz O, Erel Ö. Dynamic thiol-disulphide homeostasis in patients with Guillain-Barre Syndrome. Neurol Res 2019; 41:413-418. [PMID: 30730791 DOI: 10.1080/01616412.2019.1573955] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate dynamic thiol-disulphide homeostasis as a novel oxidative stress parameter in patients with Guillain-Barre syndrome (GBS). METHODS A total of 130 participants were included in this study, 70 of whom were diagnosed with GBS. Total thiol (-SH+-S-S-) and native thiol (-SH) levels in serum were measured in all patients and healthy individuals. Amount of dynamic disulphide bond were calculated from these values. In the GBS patients, disability status was determined by the Hughes and Medical Research Center (MRC) sum scores at the time of admission and 3 months thereafter. RESULTS Total and native thiol levels were significantly lower in patients with GBS compared with healthy individuals. There was no statistically significant difference in the number of dynamic disulphide bonds between groups. There was a negative correlation between total thiol levels in patients with GBS and Hughes scores at month 3. DISCUSSION Oxidative stress is among the molecular changes underlying the pathogenesis of GBS. In this study, we have investigated the dynamic thiol-disulfide homeostasis in patients with epilepsy using a new method in the literature. Also, functional recovery in Guillain-Barré syndrome patients could be promoted by increasing antioxidant activity.
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Affiliation(s)
- Şadiye Gümüşyayla
- a Faculty of Medicine, Department of Neurology , Ankara Yildirim Beyazit University , Ankara , Turkey
| | - Gönül Vural
- a Faculty of Medicine, Department of Neurology , Ankara Yildirim Beyazit University , Ankara , Turkey
| | | | - Gülsüm Akdeniz
- c Faculty of Medicine, Department of Biopysic , Ankara Yildirim Beyazit University , Ankara , Turkey
| | - Salim Neselioğlu
- d Faculty of Medicine, Department of Biochemistry , Ankara Yildirim Beyazit University , Ankara , Turkey
| | - Orhan Deniz
- a Faculty of Medicine, Department of Neurology , Ankara Yildirim Beyazit University , Ankara , Turkey
| | - Özcan Erel
- d Faculty of Medicine, Department of Biochemistry , Ankara Yildirim Beyazit University , Ankara , Turkey
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Increased bilirubin levels in Parkinson's disease. Parkinsonism Relat Disord 2019; 63:213-216. [PMID: 30661841 DOI: 10.1016/j.parkreldis.2019.01.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 12/21/2018] [Accepted: 01/12/2019] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Oxidative stress plays a key role in Parkinson's disease (PD) etiopathology. Heme oxygenase, an important enzyme which regulates oxidative balance, converts heme molecules into carbon monoxide, iron and biliverdin/bilirubin. The role of bilirubin has not been fully studied in PD, showing controversial results over the last few decades. Our aim was to investigate the relationship between bilirubin levels and PD. Secondly, we sought to evaluate the link between bilirubin concentration with PD progression, severity and dopaminergic treatment. METHODS We included 420 PD patients (56% males, mean age: 64 ± 12 years) and 435 healthy controls (47% males, mean age: 58 ± 17 years). Bilirubin levels in both groups were compared using linear regression and multivariate analysis adjusted according to age and sex. Secondly, a case study with the PD cohort was carried out and bilirubin levels were correlated with current treatment, duration and severity of disease. RESULTS Bilirubin levels were significantly higher in PD patients than in controls (PD: 0.56 ± 0.26 mg/dl, controls: 0.45 ± 0.22 mg/dl; p < 0.001). In PD patients, we demonstrated a negative correlation between bilirubin levels and disease duration (p < 0.05). Higher bilirubin concentrations were identified in PD patients with Hoehn & Yahr stage ≤3. No relationship between bilirubin and treatment was found in PD patients. CONCLUSIONS Increased bilirubin levels are particularly related to the first years of PD. Overexpression of oxidative enzymes could play an important role in PD etiology, leading to higher bilirubin levels in the early stages of PD.
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Baptistiolli L, Narciso LG, Almeida BFMD, Bosco AM, Souza JCD, Torrecilha RBP, Pereira PP, Figueiredo RN, Garcia JF, Kaneto CN, Ciarlini PC. Systemic oxidative stress in Suffolk and Santa Ines sheep experimentally infected with Haemonchus contortus. Acta Parasitol 2018; 63:504-514. [PMID: 29975652 DOI: 10.1515/ap-2018-0060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 04/11/2018] [Indexed: 12/17/2022]
Abstract
The mechanisms responsible for the imbalance between oxidants and antioxidants in sheep infected with Haemonchus contortus are not well established. This study aimed to prove the hypothesis that oxidative stress occurring during infection by H. contortus varies according to breed, and that the parasite burden correlates with hypoalbuminaemia and anaemia. Thus, after deworming and confirming the absence of infection, two different sheep breeds, Suffolk (n = 15) and Santa Ines (n = 22), were orally inoculated with a single dose of 5,000 L3 of H. contortus. The egg counts per gram of faeces (EPG), packed cell volume (PCV) and concentrations of several plasma markers of oxidative stress (lipid peroxidation, albumin, uric acid, total bilirubin, total antioxidant capacity [TAC], total oxidant concentration [TOC] and the oxidative stress index [OSI]) were quantified before (control group) and during the experimental infection (28, 34 and 42 days post-inoculation). In both breeds, TOC increased at 28 days and TAC increased at 42 days. In Suffolk sheep, there was a positive correlation of EPG with oxidant components (28 days) and a negative correlation of EPG with PCV (42 days). In Santa Ines sheep, there was a positive correlation of EPG with bilirubin (r = 0.492; p = 0.020). H. contortus infection caused oxidative stress, which varied according to the breed. Parasite burden was not associated with hypoalbuminaemia, whereas there was a negative correlation with PCV. This research provides the first evidence that the antioxidant status contributes more to the resilience to H. contortus in Santa Ines sheep compared to Suffolk sheep.
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Affiliation(s)
- Lillian Baptistiolli
- Department of Veterinary Medicine, Surgery and Animal Reproduction, São Paulo State University, Clóvis Pestana, 793, CEP 16050-680, Araçatuba, São Paulo, Brazil
| | - Luis Gustavo Narciso
- Department of Veterinary Medicine, Surgery and Animal Reproduction, São Paulo State University, Clóvis Pestana, 793, CEP 16050-680, Araçatuba, São Paulo, Brazil
| | - Breno Fernando Martins de Almeida
- Department of Veterinary Medicine, Surgery and Animal Reproduction, São Paulo State University, Clóvis Pestana, 793, CEP 16050-680, Araçatuba, São Paulo, Brazil
| | - Anelise Maria Bosco
- Department of Veterinary Medicine, Surgery and Animal Reproduction, São Paulo State University, Clóvis Pestana, 793, CEP 16050-680, Araçatuba, São Paulo, Brazil
| | - Jucilene Conceição de Souza
- Department of Veterinary Medicine, Surgery and Animal Reproduction, São Paulo State University, Clóvis Pestana, 793, CEP 16050-680, Araçatuba, São Paulo, Brazil
| | - Rafaela Beatriz Pintor Torrecilha
- Department of Support, Production and Animal Health, São Paulo State University, Clóvis Pestana, 793, CEP 16050-680, Araçatuba, São Paulo, Brazil
| | - Priscila Préve Pereira
- Department of Veterinary Medicine, Surgery and Animal Reproduction, São Paulo State University, Clóvis Pestana, 793, CEP 16050-680, Araçatuba, São Paulo, Brazil
| | - Renata Nogueira Figueiredo
- Department of Veterinary Medicine, Surgery and Animal Reproduction, São Paulo State University, Clóvis Pestana, 793, CEP 16050-680, Araçatuba, São Paulo, Brazil
| | - José Fernando Garcia
- Department of Support, Production and Animal Health, São Paulo State University, Clóvis Pestana, 793, CEP 16050-680, Araçatuba, São Paulo, Brazil
| | - Carlos Noriyuki Kaneto
- Department of Support, Production and Animal Health, São Paulo State University, Clóvis Pestana, 793, CEP 16050-680, Araçatuba, São Paulo, Brazil
| | - Paulo César Ciarlini
- Department of Veterinary Medicine, Surgery and Animal Reproduction, São Paulo State University, Clóvis Pestana, 793, CEP 16050-680, Araçatuba, São Paulo, Brazil
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Yao S, Chen H, Zhang Q, Shi Z, Liu J, Lian Z, Feng H, Du Q, Xie J, Ge W, Zhou H. Pain during the acute phase of Guillain-Barré syndrome. Medicine (Baltimore) 2018; 97:e11595. [PMID: 30142753 PMCID: PMC6113041 DOI: 10.1097/md.0000000000011595] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
In this study, we tried to describe the characteristics of pain and explore the association between the incidence of pain and abnormal laboratory test results in patients during the acute phase of Guillain-Barré syndrome (GBS).This retrospective cohort study enrolled 252 patients with GBS who were in the acute phase of the disease. We collected data regarding the location and type of pain, the onset time, clinical variables and laboratory tests, including the levels of uric acid (UA), albumin, cerebrospinal fluid protein (CSFP), cerebrospinal fluid glucose (CSFG), fasting glucose upon admission, and blood creatinine. The pain descriptors were compared to the severity of disease and laboratory examination results.Around 34.5% of the patients reported pain during the acute phase of GBS. Pain was negatively correlated with the disease severity during the acute phase. In total, 29 of the 87 (33.3%) patients reported pain during the 2 weeks preceding the onset of weakness. The concentration of CSFP was positively associated with the incidence of pain, while the concentrations of UA and albumin were not correlated with the incidence of pain.We found that 33.3% of the GBS patients experienced pain within 2 weeks of onset, and the pain was positively associated with CSFP concentration but was not correlated with disease severity.
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Affiliation(s)
- Shaoli Yao
- Department of Neurology, West China Hospital, Sichuan University
| | - Hongxi Chen
- Department of Neurology, West China Hospital, Sichuan University
| | - Qin Zhang
- Department of Neurology, West China Hospital, Sichuan University
| | - Ziyan Shi
- Department of Neurology, West China Hospital, Sichuan University
| | - Ju Liu
- Department of Neurology, West China Hospital, Sichuan University
| | - Zhiyun Lian
- Department of Neurology, West China Hospital, Sichuan University
| | - Huiru Feng
- Department of Neurology, West China Hospital, Sichuan University
| | - Qin Du
- Department of Neurology, West China Hospital, Sichuan University
| | - Jinlu Xie
- Department of Neurology, West China Hospital, Sichuan University
| | - Weihong Ge
- Department of Internal Medicine, Hospital of Chengdu Office of People's Govermment of Tibetan Autonomous Region
| | - Hongyu Zhou
- Department of Neurology, West China Hospital, Sichuan University, China
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The interaction of phospholipase A2 with oxidized phospholipids at the lipid-water surface with different structural organization. Chem Phys Lipids 2018; 211:44-51. [DOI: 10.1016/j.chemphyslip.2017.10.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 10/27/2017] [Accepted: 10/30/2017] [Indexed: 12/16/2022]
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Shu Y, Xu Y, Chen C, Li J, Li R, Wu H, Hu X, Lu Z, Yu X, Qiu W. Serum Bilirubin and Albumin in Anti-N-Methyl-D-Aspartate Receptor Encephalitis. Neuroimmunomodulation 2018; 25:206-214. [PMID: 30497071 DOI: 10.1159/000494801] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 10/23/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Low serum levels of bilirubin and albumin are associated with multiple autoimmune diseases, but their role in anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis is unknown. METHODS Serum bilirubin and albumin levels were evaluated in 60 patients with anti-NMDAR encephalitis, 50 cryptococcal encephalitis, and 145 healthy controls (CTLs). Of the 60 anti-NMDAR encephalitis patients, 30 had a follow-up evaluation at 3 months after admission. RESULTS Serum bilirubin and albumin levels were both significantly lower in anti-NMDAR encephalitis than in CTLs, and serum bilirubin levels were significantly lower in anti-NMDAR encephalitis than in cryptococcal encephalitis. Serum bilirubin levels were significantly lower in patients with psychiatric symptoms, with severe impairment, and with limited responses to treatment than those without psychiatric symptoms, with mild impairment, and with favorable responses to treatment, respectively. A follow-up evaluation of 30 patients revealed that the modified Rankin Scale scores were significantly decreased after treatment. Serum bilirubin significantly associated with serum albumin, and plasma hemoglobin. CONCLUSIONS Our results revealed for the first time an association between the serum levels of bilirubin in the anti-NMDAR encephalitis. Further studies investigating the role of bilirubin and albumin in anti-NMDAR encephalitis are required.
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Affiliation(s)
- Yaqing Shu
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Yue Xu
- Department of Cardiovascular Medicine, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Chen Chen
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Jing Li
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Rui Li
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Haotian Wu
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Xueqiang Hu
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Zhengqi Lu
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Xinhua Yu
- Priority Area Asthma and Allergy, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Borstel, Germany
| | - Wei Qiu
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China,
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Barzegar M, Shaygannejad V, Mirmosayyeb O, Valipour S, Akbari R, Vesal S, Ashtar F, Dehghani L, Mohammadi A, Esmaeil N. Serum Bilirubin Level Changes in Multiple Sclerosis Patients. CASPIAN JOURNAL OF NEUROLOGICAL SCIENCES 2018. [DOI: 10.29252/nirp.cjns.4.12.30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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Li X, Li W, Shi X, Mo L, Luo Y, Qin L, Yang Z, Mo W. Is serum bilirubin associated with the severity of Guillain-Barré syndrome? Int J Neurosci 2017; 128:595-599. [PMID: 29130362 DOI: 10.1080/00207454.2017.1404465] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECTIVE Our aim was to assess the correlation between serum bilirubin levels and Guillain-Barré syndrome (GBS). PATIENTS AND METHODS One hundred and one newly diagnosed patients with Guillain-Barré syndrome and 111 healthy age- and sex-matched individuals in the First Affiliated Hospital of Guangxi Medical University (Guangxi, China) from June 2012 to May 2017 were included in this study. Clinical characteristics and laboratory parameters of Guillain-Barré syndrome patients and healthy controls were retrospectively analysed. RESULTS Serum bilirubin levels in Guillain-Barré syndrome patients were significantly lower as compared with those in healthy controls (p < 0.001); besides, log C-reactive protein and erythrocyte sedimentation rate were significantly higher. We found that there was a negative correlation between GBS disability scale scores and total bilirubin, direct bilirubin, indirect bilirubin (r = -0.541, P < 0.001; r = -0.403, P < 0.001; r = -0.526, P < 0.001), respectively. Among patients with GBS, serum total bilirubin, direct bilirubin, and indirect bilirubin levels were independently associated with Guillain-Barré syndrome disability scale scores in multiple linear regression analysis, respectively. CONCLUSIONS We observed that serum bilirubin levels were lower in patients with Guillain-Barré syndrome, and suggested total bilirubin, direct bilirubin, and indirect bilirubin were independently and inversely associated with Guillain-Barré syndrome severity.
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Affiliation(s)
- Xiaohong Li
- a Department of Clinical Laboratory , First Affiliated Hospital of Guangxi Medical University , Nanning , China
| | - Wenchao Li
- a Department of Clinical Laboratory , First Affiliated Hospital of Guangxi Medical University , Nanning , China
| | - Xiang Shi
- a Department of Clinical Laboratory , First Affiliated Hospital of Guangxi Medical University , Nanning , China
| | - Lijun Mo
- a Department of Clinical Laboratory , First Affiliated Hospital of Guangxi Medical University , Nanning , China
| | - Yuzhen Luo
- a Department of Clinical Laboratory , First Affiliated Hospital of Guangxi Medical University , Nanning , China
| | - Liuqun Qin
- a Department of Clinical Laboratory , First Affiliated Hospital of Guangxi Medical University , Nanning , China
| | - Zheng Yang
- a Department of Clinical Laboratory , First Affiliated Hospital of Guangxi Medical University , Nanning , China
| | - Wuning Mo
- a Department of Clinical Laboratory , First Affiliated Hospital of Guangxi Medical University , Nanning , China
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Li WC, Mo LJ, Shi X, Lin ZY, Li YY, Yang Z, Wu CL, Li XH, Luo YZ, Qin LQ, Mo WN. Antioxidant status of serum bilirubin, uric acid and albumin in pemphigus vulgaris. Clin Exp Dermatol 2017; 43:158-163. [PMID: 29067729 DOI: 10.1111/ced.13289] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/08/2017] [Indexed: 11/28/2022]
Affiliation(s)
- W. C. Li
- Department of Clinical Laboratory; First Affiliated Hospital of Guangxi Medical University; Nanning China
| | - L. J. Mo
- Department of Clinical Laboratory; First Affiliated Hospital of Guangxi Medical University; Nanning China
| | - X. Shi
- Department of Clinical Laboratory; First Affiliated Hospital of Guangxi Medical University; Nanning China
| | - Z. Y. Lin
- Department of Clinical Laboratory; First Affiliated Hospital of Guangxi Medical University; Nanning China
| | - Y. Y. Li
- Department of Clinical Laboratory; First Affiliated Hospital of Guangxi Medical University; Nanning China
| | - Z. Yang
- Department of Clinical Laboratory; First Affiliated Hospital of Guangxi Medical University; Nanning China
| | - C. L. Wu
- Department of Clinical Laboratory; First Affiliated Hospital of Guangxi Medical University; Nanning China
| | - X. H. Li
- Department of Clinical Laboratory; First Affiliated Hospital of Guangxi Medical University; Nanning China
| | - Y. Z. Luo
- Department of Clinical Laboratory; First Affiliated Hospital of Guangxi Medical University; Nanning China
| | - L. Q. Qin
- Department of Clinical Laboratory; First Affiliated Hospital of Guangxi Medical University; Nanning China
| | - W. N. Mo
- Department of Clinical Laboratory; First Affiliated Hospital of Guangxi Medical University; Nanning China
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Serum uric acid concentration is associated with hypertensive retinopathy in hypertensive chinese adults. BMC Ophthalmol 2017; 17:83. [PMID: 28577362 PMCID: PMC5457596 DOI: 10.1186/s12886-017-0470-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 05/15/2017] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND This cross sectional investigation included 12,966 subjects with hypertension, a cohort of the China Stroke Primary Prevention Trial (CSPPT), a randomized, multicenter clinical trial. This study aimed to explore the correlation between serum uric acid (SUA) concentration and hypertensive retinopathy in hypertensive adults. METHODS Diagnosis of hypertensive retinopathy was determined by non-mydriatic fundus photography and classified with Keith-Wagener-Barker (KWB) system. The correlation of SUA levels with hypertensive retinopathy prevalence and severity was assessed by statistical analysis. RESULTS 9848 (75.95%) subjects were diagnosed with hypertensive retinopathy with the following retinopathy grade distribution: grade 1: 58.80%, grade 2: 14.81%, and grade 3-4: 2.34%. SUA levels were significantly associated with hypertensive retinopathy prevalence. Patients with hypertensive retinopathy had higher SUA levels than those without hypertensive retinopathy. Patients in the highest uric acid quartile had an odds ratio for hypertensive retinopathy of 1.21 compared to patients in the lowest uric acid quartile (OR = 1.21, 95% CI: 1.05-1.40, P = 0.008). When compared to the non-hyperuricemia group, those in the hyperuricemia group had an odds ratio for hypertensive retinopathy of 1.18(OR = 1.18, 95% CI: 1.05-1.33, P = 0.004). Every 1 mg/dl increase in uric acid concentration was significantly associated with a 6% higher odds of hypertensive retinopathy (OR = 1.06, 95% CI: 1.02-1.10, P = 0.002). CONCLUSIONS The prevalence of hypertensive retinopathy was high (75.95%) among hypertensives in our patients cohort. In addition, SUA concentration was significantly associated with hypertensive retinopathy.
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Su Z, Chen Z, Xiang Y, Wang B, Huang Y, Yang D, Li X, Weng Y, Lin X, Chen G, Liu W, Zhao C, Wang Q, Li S, Chen Y, Chen Y, Quan W, Tong Q, Wu S, Huang S, Mei P, Li Z, Li J, Hou S, Zhang X. Low serum levels of uric acid and albumin in patients with Guillain-Barre syndrome. Medicine (Baltimore) 2017; 96:e6618. [PMID: 28403109 PMCID: PMC5403106 DOI: 10.1097/md.0000000000006618] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Free radical toxicity due to poorly maintained cellular redox levels is crucial events that have been associated with the pathogenesis of Guillain-Barre syndrome (GBS) patients. Uric acid (UA) and albumin correlate with oxidative stress in some degree. We aimed to evaluate the relationship between GBS and serum levels of UA and albumin in the present study.The serum levels of UA and albumin were determined in 203 individuals including 88 patients with GBS and 153 healthy controls (HC).We found that serum levels of UA and albumin in patients with GBS were significantly lower than those in HC group. Besides, similar phenomenon was observed when the male and female subgroups were estimated, respectively. Additionally, we found that there is no statistic difference among subgroups of GBS regarding UA and albumin. The univariate analysis revealed that both the high UA and high albumin were protective factors for patients with GBS (odds ratio [OR] 0.140; 95% confidence interval [CI]: 0.074-0.264; P < .001 and OR 0.016; 95% CI: 0.006-0.038; P < .001, respectively). It was further confirmed by the multivariable logistic regression analysis after adjusting for other potential confounding factors (OR 0.168; 95% CI: 0.055-0.514; P = .002 and OR 0.027; 95% CI: 0.011-0.071; P < .001, respectively).In conclusion, we found that patients with GBS had significantly low serum UA and albumin levels. Moreover, we demonstrated that both the high UA and high albumin were protective factors for patients with GBS.
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Affiliation(s)
| | | | | | - Bingjie Wang
- Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai
| | | | | | - Xiang Li
- Department of Neurology, Wenzhou
| | | | - XianFeng Lin
- Department of Orthopedic Surgery, Sir Run Run Shaw Hospital, Medical College of Zhejiang University, Hangzhou
| | | | | | - Chenchen Zhao
- Department of Orthopedic Surgery, The Second Affiliated Hospital, Medical College of Zhejiang University, Hangzhou
| | - Qingqing Wang
- Department of Orthopedic Surgery, The Second Affiliated Hospital of Wenzhou Medical University
| | - Shanshan Li
- Department of Infection and Liver Diseases, Liver Research Center
| | | | | | | | | | - Shengjie Wu
- Department of Cardiovascular Medicine, The Heart Center
| | - Shihao Huang
- Department of Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou
| | | | | | - Jia Li
- Department of Neurology, Wenzhou
| | - Shengtao Hou
- Department of Neurology, Wenzhou
- Brain Research Centre and Department of Biology, Southern University of Science and Technology, Shenzhen, China
| | - Xu Zhang
- Department of Neurology, Wenzhou
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Oxidative Stress and Environmental Exposures are Associated with Multiple System Atrophy in Chinese Patients. Can J Neurol Sci 2017; 43:703-9. [PMID: 27670212 DOI: 10.1017/cjn.2016.261] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVE Oxidative stress is involved in the pathogenesis of multiple system atrophy (MSA). The aim of this study is to examine oxidant biomarkers including homocysteine (Hcys), bilirubin, uric acid, lipids, and potential environmental risk factors and to ascertain whether these data correlate with MSA in a Chinese population. METHODS In this study, serum levels of Hcys, bilirubin, uric acid, and lipids were studied in 55 MSA patients and 76 healthy controls (HCs). Education, anti-parkinsonian agent usage, smoking, drinking, farming, and living area of the subjects also were analyzed. The Unified MSA Rating Scale (UMSARS), Hoehn & Yahr stage, International Cooperative Ataxia Rating Scale, and Mini-Mental State Examination were used to assess the disease severity, the parkinsonism, ataxia, and the cognitive ability of MSA, respectively. RESULTS The levels of Hcys were higher (p<0.001) and those of total bilirubin (p=0.007), indirect bilirubin (p=0.011), and total cholesterol (p=0.046) were lower in MSA patients than in healthy controls, whereas uric acid levels did not differ significantly between MSA and healthy controls. Moreover, Hcys levels in MSA patients had positive correlations with illness duration (r s =0.422, p=0.001) and UMSARS-I (r s =0.555, p<0.001), respectively. High-density lipoprotein cholesterol levels were negatively correlated with UMSARS-I (r s =-0.325, p=0.015). Farming was more frequent in MSA patients (1-20 years: odds ratio, 6.36; p20 years: odds ratio, 10.26; p=0.001), whereas current smoking was less frequent (odds ratio, 0.13, p=0.002). CONCLUSIONS Elevated Hcys and decreased high-density lipoprotein cholesterol may be associated with the disease severity of MSA. Environmental exposures such as farming and smoking may contribute to the occurrence but not the progression of MSA.
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Impact of serum uric acid, albumin and their interaction on Parkinson’s disease. Neurol Sci 2016; 38:331-336. [DOI: 10.1007/s10072-016-2738-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 10/12/2016] [Indexed: 01/08/2023]
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Serum uric acid levels in patients with infections of central nervous system. Acta Neurol Belg 2016; 116:303-8. [PMID: 26612048 DOI: 10.1007/s13760-015-0571-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 11/14/2015] [Indexed: 01/07/2023]
Abstract
The lower levels of serum uric acid (UA) correlated with meningitis have been reported. However, comparison of UA levels among different kinds of infections of central nervous system (CNS) and changes of UA levels before and after treatment are unknown. Our study aimed to investigate the antioxidant status of serum UA in five common types of CNS infections. We retrospectively evaluated serum UA levels of 399 patients with different types of CNS infections including viral meningitis or meningoencephalitis (VM), brain cysticercosis (BC), tuberculous meningitis or meningoencephalitis (TM), cryptococcus meningitis or meningoencephalitis (CM) and bacterial meningitis or meningoencephalitis (BM), and 119 healthy controls. The changes of serum UA were examined and analyzed. The serum levels of UA in patients with CNS infections were significantly lower than those in normal subjects and among in TM, CM and BM groups were apparently lower when compared with VM and BC groups; otherwise, after effective therapy, serum UA levels were obviously higher than before. Our findings showed that patients with CNS infections had lower serum UA levels, which was independent of the classification and the serum UA levels increased obviously after valid treatment, the variation of UA levels might be considered as an indicator of clinical curative effect in patients with CNS infections.
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Wang L, Hu W, Wang J, Qian W, Xiao H. Low serum uric acid levels in patients with multiple sclerosis and neuromyelitis optica: An updated meta-analysis. Mult Scler Relat Disord 2016; 9:17-22. [PMID: 27645338 DOI: 10.1016/j.msard.2016.05.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 05/08/2016] [Indexed: 01/05/2023]
Abstract
OBJECTIVES To evaluate the association between serum uric acid (UA) levels and patients with MS and NMO. METHODS The PubMed, Web of Science and Cochrane Library database were searched for relevant studies. Pooled standardized mean difference (SMD) and 95% confidence interval (CI) were used as effect size. Subgroup analysis was performed by gender, country, disease durations, scores of EDSS, detection method and clinical classification. RESULTS A total of 10 case-control studies involving 1537 patients (1308 MS patients, 229 NMO patients) and 908 healthy controls were included. We found the serum UA levels of patients with MS and NMO were significantly lower compared to those of healthy controls (SMD=-0.52, 95%CI,-0.81 to -0.24). In the subgroup analysis, there was no significant difference between serum UA levels in patients and healthy controls in European subgroup (SMD=-0.32, 95%CI,-0.78 to 0.14). Additionally, we found that serum UA levels were higher in MS and NMO patients than in healthy controls in EDSS>3.5 subgroup (SMD=-0.38, 95%CI,-0.58 to -0.19), but not in EDSS≤3.5 subgroup (SMD=-0.35, 95%CI,-0.97 to 0.27). Patients of relapsing group had significant lower serum UA levels than patients of remitting group (SMD=0.70, 95%CI, 0.19-1.21). CONCLUSION Patients with MS and NMO showed lower serum UA levels when compared with healthy controls. Serum UA might be a potential diagnostic biomarker for MS and NMO.
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Affiliation(s)
- Lijun Wang
- Department of Neurology, Huai'an First People's Hospital, Nanjing Medical University, 6 Beijing Road West, Huai'an, Jiangsu 223300, China
| | - Wei Hu
- Centre for Disease Control and Prevention of Huai'an City, Huai'an 223001, China
| | - Jun Wang
- Department of Toxicology, School of Public Health, Nanjing Medical University, 818 Tianyuan East Road, Nanjing 211166, China
| | - Wenyi Qian
- Department of Toxicology, School of Public Health, Nanjing Medical University, 818 Tianyuan East Road, Nanjing 211166, China
| | - Hang Xiao
- Department of Toxicology, School of Public Health, Nanjing Medical University, 818 Tianyuan East Road, Nanjing 211166, China.
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Aydin O, Kurtulus F, Eren E, Ellidag HY, Yılmaz N, Yaman A. Balanced oxidative stress index in spite of decreased uric acid levels in multiple sclerosis patients. NEUROCHEM J+ 2015. [DOI: 10.1134/s1819712415020026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Moccia M, Picillo M, Erro R, Longo K, Amboni M, Santangelo G, Palladino R, Allocca R, Caporale O, Triassi M, Pellecchia MT, Barone P, Vitale C. Increased bilirubin levels in de novo Parkinson's disease. Eur J Neurol 2015; 22:954-9. [PMID: 25740378 DOI: 10.1111/ene.12688] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Accepted: 12/29/2014] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND PURPOSE Oxidative stress is a central pathogenic mechanism of Parkinson's disease (PD), and the heme oxygenase (HO) bilirubin pathway is one of the main mammalian antioxidative defences. Indeed, there is growing evidence of HO-bilirubin upregulation from early phases of PD. Our aim was to investigate bilirubin as a possible biomarker of PD diagnosis and progression. METHODS A cross-sectional case-control study was performed to evaluate differences in bilirubin levels between newly diagnosed, drug-naïve PD subjects and controls. Afterwards, PD subjects were included in a 2-year longitudinal study to evaluate disease progression in relation to baseline bilirubin levels. RESULTS Seventy-five de novo PD subjects were selected and matched with 75 controls by propensity score. Analysis of variance showed higher bilirubin levels in PD patients compared with controls (P < 0.001). Linear regression analysis failed to show a relationship between bilirubin and Unified Parkinson's Disease Rating Scale (UPDRS) part III (P = 0.283) at baseline evaluation. At 2-year follow-up, indirect relationships between bilirubin levels and UPDRS part III (P = 0.028) and between bilirubin levels and levodopa-equivalent daily dosage (P = 0.012) were found. CONCLUSIONS Parkinson's disease subjects showed higher levels of bilirubin compared with controls. Bilirubin increase might be due to HO overexpression as a compensatory response to oxidative stress occurring from early stages of PD.
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Affiliation(s)
- M Moccia
- Department of Neuroscience, Reproductive Science and Odontostomatology, Federico II University, Naples, Italy
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Ljubisavljevic S. Oxidative Stress and Neurobiology of Demyelination. Mol Neurobiol 2014; 53:744-758. [PMID: 25502298 DOI: 10.1007/s12035-014-9041-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Accepted: 11/30/2014] [Indexed: 12/25/2022]
Abstract
Despite a large amount of research which aims at defining the pathophysiology of human demyelination (i.e., multiple sclerosis), etiological bases of disease have been unknown so far. The point of intersection of all assumed etiological factors, which are mainly based upon immunological cascades, is neuroinflammation. The precise definition of the place and role of all pathogenetic factors in the occurrence and development of the disease is of crucial importance for understanding the clinical nature and for finding more effective therapeutic options. There are few studies whose results give more precise data about the role and the importance of other factors in neuroinflammation, besides immunological ones, with regard to clinical and paraclinical correlates of the disease. The review integrates results found in previously performed studies which have evaluated oxidative stress participation in early and late neuroinflammation. The largest number of studies indicates that the use of antioxidants affects the change of neuroinflammation course under experimental conditions, which is reflected in the reduction of the severity and the total reversibility in clinical presentation of the disease, the faster achieving of remission, and the delayed and slow course of neuroinflammation. Therapies based on the knowledge of redox biology targeting free radical generation hold great promise in modulation of the neuroinflammation and its clinical presentations.
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Affiliation(s)
- Srdjan Ljubisavljevic
- Clinic of Neurology, Clinical Center Nis, Bul. Dr Zorana Djindjica 48, Nis, 18000, Serbia.
- Faculty of Medicine, University of Nis, Bul. Dr Zorana Djindjica 81, Nis, 18000, Serbia.
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Zhang L, Hong Z, Chen X, Tan S, Lin Y, Wang Y, Sun S, Cai W, Lu Z. Iron metabolism in neuromyelitis optica patients. J Neurol Sci 2014; 347:214-8. [PMID: 25456458 DOI: 10.1016/j.jns.2014.09.051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 09/11/2014] [Accepted: 09/30/2014] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The aim of this study was to investigate whether there was any relationship between iron metabolism and clinical features of NMO patients. METHODS We measured serum iron, ferritin, and transferrin levels in 25 patients with NMO and 25 controls. RESULTS The patients with NMO had significantly decreased serum iron and increased serum ferritin (P=0.001 and 0.002, respectively), both of which were in normal ranges. The serum iron level of NMO patients was not correlated with disease duration, relapse number, or magnetic resonance imaging lesions. After multivariate linear regression analysis, the serum iron level was correlated with age (P=0.003) but not EDSS score. CONCLUSIONS The iron metabolism might reflect the chronic oxidative injury in NMO patients. It is still unclear whether iron metabolism is implicated in the pathogenesis of NMO.
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Affiliation(s)
- Lei Zhang
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No 600 Tianhe Road, Guangzhou City, China; Department of Neurology, The Fifth Affiliated Hospital of Sun Yat-sen University, No 52 Meihuadong Road, Zhuhai City, China
| | - Zhongsi Hong
- Department of Infection, The Fifth Affiliated Hospital of Sun Yat-sen University, No 52 Meihuadong Road, Zhuhai City, China
| | - Xiaoyu Chen
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No 600 Tianhe Road, Guangzhou City, China
| | - Sha Tan
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No 600 Tianhe Road, Guangzhou City, China
| | - Yinyao Lin
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No 600 Tianhe Road, Guangzhou City, China
| | - Yanqiang Wang
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No 600 Tianhe Road, Guangzhou City, China
| | - Shaoyang Sun
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No 600 Tianhe Road, Guangzhou City, China
| | - Wei Cai
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No 600 Tianhe Road, Guangzhou City, China
| | - Zhengqi Lu
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No 600 Tianhe Road, Guangzhou City, China.
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Tasset I, Bahamonde C, Agüera E, Conde C, Cruz AH, Pérez-Herrera A, Gascón F, Giraldo AI, Ruiz MC, Lillo R, Sánchez-López F, Túnez I. Effect of natalizumab on oxidative damage biomarkers in relapsing-remitting multiple sclerosis. Pharmacol Rep 2014; 65:624-31. [PMID: 23950585 DOI: 10.1016/s1734-1140(13)71039-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Revised: 02/05/2013] [Indexed: 01/29/2023]
Abstract
BACKGROUND Natalizumab is a monoclonal antibody used to treat multiple sclerosis. This study sought to determine whether the protective action of natalizumab involved a reduction in oxidative damage. METHODS Twenty-two multiple sclerosis patients fulfilling the revised McDonald criteria were assigned to treatment with 300 mg natalizumab intravenously once monthly (infusion every 4 weeks) in accordance with Spanish guidelines. Carbonylated proteins, 8-hydroxy-2'-deoxyguanosine, total glutathione, reduced glutathione, superoxide dismutase, glutathione peroxidase, and myeloperoxidase levels were measured at baseline and after 14 months' treatment, and the antioxidant gap was calculated. RESULTS Natalizumab prompted a drop in oxidative-damage biomarker levels, together with a reduction both in myeloperoxidase levels and in the myeloperoxidase/neutrophil granulocyte ratio. Interestingly, natalizumab induced nuclear translocation of Nrf2 and a fall in serum vascular cell adhesion molecule-1 levels. CONCLUSION These findings suggest that natalizumab has a beneficial effect on oxidative damage found in MS patients.
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Affiliation(s)
- Inmaculada Tasset
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba, Cordoba, Spain
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Jangi S, Otterbein L, Robson S. The molecular basis for the immunomodulatory activities of unconjugated bilirubin. Int J Biochem Cell Biol 2013; 45:2843-51. [PMID: 24144577 DOI: 10.1016/j.biocel.2013.09.014] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Revised: 09/24/2013] [Accepted: 09/29/2013] [Indexed: 01/03/2023]
Abstract
Nearly a century ago, jaundiced patients were observed to have surprising and spontaneous remissions from incurable immunologic diseases including rheumatoid arthritis, allergy, and asthma. The mystery of why this phenomenon occurred remains unresolved to this day. Bilirubin has traditionally been considered an excretory product resulting from heme metabolism with little benefit to human physiology. In the past few decades, however, the salutary role of this byproduct as a potent antioxidant has been repeatedly noted. Most recently, the molecule has been found to possess immunomodulatory properties that rival its redox capacity, possibly explaining its ability to suppress inflammation. In this review, we specifically examine unconjugated bilirubin (UCB) as an immunomodulator and explore the molecular basis for its immunosuppressive effects.
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Affiliation(s)
- Sushrut Jangi
- Beth Israel Deaconess Medical Center, United States; Harvard Medical School, United States.
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Ljubisavljevic S, Stojanovic I, Vojinovic S, Stojanov D, Stojanovic S, Kocic G, Savic D, Cvetkovic T, Pavlovic D. Cerebrospinal fluid and plasma oxidative stress biomarkers in different clinical phenotypes of neuroinflammatory acute attacks. Conceptual accession: from fundamental to clinic. Cell Mol Neurobiol 2013; 33:767-77. [PMID: 23677512 DOI: 10.1007/s10571-013-9944-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 05/05/2013] [Indexed: 12/18/2022]
Abstract
Oxidative stress is revealed as the main contributor in the pathophysiology of neuroinflammation. Analyzing plasma and cerebrospinal fluid (CSF) of patients with different clinical phenotypes of neuroinflammation, defined as clinically isolated syndrome (CIS), and those defined as relapsing remitting multiples sclerosis (RRMS), we tested peripheral and CNS oxidative stress intensity in these neuroinflammatory acute attacks. All obtained values changes were assessed regarding clinical and radiological features of CNS inflammation. The obtained results revealed an increase in malondialdehyde levels in plasma and CSF in CIS and RRMS patients compared to control values (p < 0.05). The obtained values were most prevailed in both study group, CIS and RRMS, in patients with severe clinical presentation (p < 0.05). Measured activities of catalase and total superoxide dismutase were higher in CIS and RRMS patients in plasma compared to control values (p < 0.05), parallel with an increased catalase activity and decrease in superoxide dismutase activity in CSF regarding values obtained in control group (p < 0.05). The positive correlations regarding clinical score were obtained for all tested biomarkers (p < 0.01). Although the positive correlations were observed in MDA levels in plasma and CSF, for both study patients, and their radiological findings (p < 0.01), and a negative correlation in plasma SOD activity and CIS patients' radiological findings (p < 0.01), no other similar correlations were obtained. These findings might be useful in providing the earliest antioxidative treatment in neuroinflammation aimed to preserve total and CNS antioxidative capacity parallel with delaying irreversible, later neurological disabilities.
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Affiliation(s)
- Srdjan Ljubisavljevic
- Clinic of Neurology, Clinical Centre Nis, Bul. Dr Zorana Djindjica 48, 18000, Nis, Serbia.
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Jie Q, Tang Y, Deng Y, Li Y, Shi Y, Gao C, Xing M, Wang D, Liu L, Yao P. Bilirubin participates in protecting of heme oxygenase-1 induction by quercetin against ethanol hepatotoxicity in cultured rat hepatocytes. Alcohol 2013; 47:141-8. [PMID: 23265624 DOI: 10.1016/j.alcohol.2012.10.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Revised: 10/12/2012] [Accepted: 10/19/2012] [Indexed: 12/17/2022]
Abstract
To attenuate alcohol liver disease (ALD) is extremely urgent since ALD has been emerged as a major liver disease. The aim of the present study is to investigate the hepatoprotective effect against ethanol-induced injury of bilirubin, a product of heme metabolism degradation via HO and biliverdin reductase catalysis. Ethanol-incubated primary rat hepatocytes (100 mmol/L) were treated by quercetin, bilirubin, inflammatory factors, and/or HO-1 inducer/inhibitor for 24 h, and the cellular damage was assayed. Quercetin lowered ethanol-induced glutathione depletion and superoxide dismutase inactivation, inhibited the overproduction of malondialdehyde and reactive oxygen species, and decreased the leakage of cellular aspartate aminotransferase and lactate dehydrogenase, accompanying the normalization of bilirubin level. The effect of quercetin was mimicked by exogenous bilirubin in a dose-dependent manner to some extent (within 25 μmol/L) and pharmacological HO-1 inducer hemin, but abolished by HO-1 inhibitor zinc protoporphyrin-IX. Inflammatory challenge of TNF-α plus IL-6 further aggravated ethanol-induced oxidative damage, which was also attenuated by bilirubin in part. These findings shed a light on the anti-oxidative and anti-inflammatory role of bilirubin released from quercetin/HO-1 and biliverdin reductase pathway against ethanol hepatotoxicity and highlight a prospective strategy of nutritional intervention for ALD by naturally occurring quercetin to induce HO-1 with the release of bioactive end-products.
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