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Xie J, Yu H, Lv W, Li K, Li H, Ji Y, Cai Y, Cheng Y, Luo L, Wu C, Xu Y, Du L, Chen Y, Pang C, Deng B. Association of dynamic hepatic metabolism with clinical outcomes in patients with severe Guillain-Barré syndrome: A prospective cohort study from multi-centers in China. J Peripher Nerv Syst 2024; 29:415-427. [PMID: 39343764 DOI: 10.1111/jns.12661] [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: 07/07/2024] [Revised: 09/13/2024] [Accepted: 09/16/2024] [Indexed: 10/01/2024]
Abstract
BACKGROUND AND AIMS Little is known about the ability of serological biomarkers to monitor clinical outcomes in patients with Guillain-Barré syndrome (GBS). The objective of this study was to determine the associations of liver function, easily available and convenient biomarkers, with the clinical course and outcome of severe GBS in patients. METHODS A prospective data collection was conducted in a cohort of 343 GBS patients from multi-centers between September 2019 and December 2023. Serum samples were obtained at four-time points for mechanical ventilation (MV) patients and two-time points for non-MV patients. The primary endpoint was the need for MV during hospitalization, while secondary outcomes included the ability to walk independently and the mortality at 26-week follow-up. RESULTS (i) A total of 208 patients were eligible, of whom 50 required MV with a median (interquartile range) ventilation duration of 15 (8-27) days. (ii) Hypohepatia, as evidenced by reduced total protein (OR 0.913 [95% CI 0.862-0.967]) and albumin (0.775 [0.679-0.884]) 1 week after treatment, along with raised liver enzymes (2.732 [1.007-7.413]), was associated with the risk of MV after adjusting for confounders. (iii) After 26-week follow-up, patients with hypohepatia were less likely to regain independent walking and exhibited higher mortality in survival analysis (all log-rank p < .05). (iv) In a cross-sectional study spanning up to 4 years of follow-up, patients with prolonged MV (≥15 days) experienced a longer time to regain independent ambulation than those with shorter MV (167 [46-316] vs. 69 [24-106], p = .036). However, no relationships between liver function and prolonged MV were revealed. INTERPRETATION Dynamically monitoring hepatic metabolism and promptly adjusting, it can aid the improvement of GBS in patients.
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Affiliation(s)
- Jiali Xie
- Department of Neurology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Huan Yu
- Department of Pediatrics, Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Wenjing Lv
- Department of Geriatrics, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Kezheng Li
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Hui Li
- Department of Neurology, Harrison International Peace Hospital, Hengshui, China
| | - Yingxiao Ji
- Department of Neurology, Hebei General Hospital, Shijiazhuang, China
- Hebei Provincial Key Laboratory of Cerebral Networks and Cognitive Disorders, Hebei General Hospital, Shijiazhuang, China
| | - Yunlei Cai
- Department of Neurology, Anyang District Hospital, Dengta Road, Beiguan District, Anyang, China
| | - Yifan Cheng
- Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Longfeng Luo
- Department of Neurology, Yuhuan People's Hospital, Taizhou, China
| | - Chunxue Wu
- Department of Neurology, Wen Cheng County People's Hospital, Wenzhou, China
| | - Yiting Xu
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Lihuai Du
- College of Mathematics and Physics, Wenzhou University, Wenzhou, China
| | - Yinuo Chen
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Chunyang Pang
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Binbin Deng
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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Terrill JR, Bautista APR, Tsioutsias I, Grounds MD, Arthur PG. Oxidised Albumin Levels in Plasma and Skeletal Muscle as Biomarkers of Disease Progression and Treatment Efficacy in Dystrophic mdx Mice. Antioxidants (Basel) 2024; 13:720. [PMID: 38929159 PMCID: PMC11201235 DOI: 10.3390/antiox13060720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 06/05/2024] [Accepted: 06/06/2024] [Indexed: 06/28/2024] Open
Abstract
Redox modifications to the plasma protein albumin have the potential to be used as biomarkers of disease progression and treatment efficacy in pathologies associated with inflammation and oxidative stress. One such pathology is Duchenne muscular dystrophy (DMD), a fatal childhood disease characterised by severe muscle wasting. We have previously shown in the mdx mouse model of DMD that plasma albumin thiol oxidation is increased; therefore, the first aim of this paper was to establish that albumin thiol oxidation in plasma reflects levels within mdx muscle tissue. We therefore developed a method to measure tissue albumin thiol oxidation. We show that albumin thiol oxidation was increased in both mdx muscle and plasma, with levels correlated with measures of dystropathology. In dystrophic muscle, albumin content was associated with areas of myonecrosis. The second aim was to test the ability of plasma thiol oxidation to track acute changes in dystropathology: we therefore subjected mdx mice to a single treadmill exercise session (known to increase myonecrosis) and took serial blood samples. This acute exercise caused a transient increase in total plasma albumin oxidation and measures of dystropathology. Together, these data support the use of plasma albumin thiol oxidation as a biomarker to track active myonecrosis in DMD.
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Affiliation(s)
- Jessica R. Terrill
- School of Molecular Sciences, The University of Western Australia, Perth, WA 6009, Australia; (J.R.T.); (A.P.R.B.); (I.T.)
| | - Angelo Patrick R. Bautista
- School of Molecular Sciences, The University of Western Australia, Perth, WA 6009, Australia; (J.R.T.); (A.P.R.B.); (I.T.)
| | - Irene Tsioutsias
- School of Molecular Sciences, The University of Western Australia, Perth, WA 6009, Australia; (J.R.T.); (A.P.R.B.); (I.T.)
- School of Human Sciences, The University of Western Australia, Perth, WA 6009, Australia;
| | - Miranda D. Grounds
- School of Human Sciences, The University of Western Australia, Perth, WA 6009, Australia;
| | - Peter G. Arthur
- School of Molecular Sciences, The University of Western Australia, Perth, WA 6009, Australia; (J.R.T.); (A.P.R.B.); (I.T.)
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Bogoje Raspopović A, Balta V, Vodopić M, Drobac M, Boroš A, Đikić D, Demarin V. The possible role of oxidative stress marker glutathione in the assessment of cognitive impairment in multiple sclerosis. Open Med (Wars) 2024; 19:20240952. [PMID: 38623459 PMCID: PMC11017180 DOI: 10.1515/med-2024-0952] [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: 10/05/2023] [Revised: 03/11/2024] [Accepted: 03/21/2024] [Indexed: 04/17/2024] Open
Abstract
Oxidative stress markers have a distinct role in the process of demyelination in multiple sclerosis. This study investigated the potential correlation of markers of oxidative stress (glutathione [GSH], catalase) with the number of demyelinating lesions and the degree of disability, cognitive deficit, and depression in patients with relapsing-remitting multiple sclerosis (RRMS). Sixty subjects meeting the criteria for RRMS (19 men and 41 women), and 66 healthy controls (24 men, 42 women) were included. In this study, GSH significantly negatively correlated with the degree of cognitive impairment. This is the first study of subjects with RRMS that performed the mentioned research of serum GSH levels on the degree of cognitive damage examined by the Montreal Scale of Cognitive Assessment (MoCA) test. The development of cognitive changes, verified by the MoCA test, was statistically significantly influenced by the positive number of magnetic resonance lesions, degree of depression, expanded disability status scale (EDSS), age, and GSH values. Based on these results, it can be concluded that it is necessary to monitor cognitive status early in RRMS patients, especially in those with a larger number of demyelinating lesions and a higher EDSS level and in older subjects. Also, the serum level of GSH is a potential biomarker of disease progression, which could be used more widely in RRMS.
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Affiliation(s)
- Andrijana Bogoje Raspopović
- Department of Neurology, General Hospital Dubrovnik, Dubrovnik, Croatia
- Department of Animal Physiology, Biology Division, Faculty of Science, University of Zagreb, 10000Zagreb, Croatia
| | - Vedran Balta
- Department of Animal Physiology, Biology Division, Faculty of Science, University of Zagreb, 10000Zagreb, Croatia
| | - Maro Vodopić
- Department of Neurology, General Hospital Dubrovnik, Dubrovnik, Croatia
| | - Marina Drobac
- Department of Neurology, General Hospital Dubrovnik, Dubrovnik, Croatia
| | - Almoš Boroš
- Czech Academy of Science, Institute of Physiology, Prague, Czechia
| | - Domagoj Đikić
- Department of Animal Physiology, Biology Division, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000Zagreb, Croatia
| | - Vida Demarin
- Croatian Academy of Sciences and Arts, Zagreb, Croatia
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A Blood Biomarker for Duchenne Muscular Dystrophy Shows That Oxidation State of Albumin Correlates with Protein Oxidation and Damage in Mdx Muscle. Antioxidants (Basel) 2021; 10:antiox10081241. [PMID: 34439489 PMCID: PMC8389308 DOI: 10.3390/antiox10081241] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 07/14/2021] [Accepted: 07/29/2021] [Indexed: 12/31/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is a severe X-linked muscle wasting disease with no cure. While the precise mechanisms of progressive dystropathology remain unclear, oxidative stress caused by excessive generation of oxidants is strongly implicated. Blood biomarkers that could track oxidant levels in tissues would be valuable to measure the effectiveness of clinical treatments for DMD; our research has focused on developing such biomarkers. One target of oxidants that has the potential to be harnessed as a clinical biomarker is the thiol side chain of cysteine 34 (Cys34) of the blood protein albumin. This study using the mdx mouse model of DMD shows that in plasma, albumin Cys34 undergoes thiol oxidation and these changes correlate with levels of protein thiol oxidation and damage of the dystrophic muscles. A comparison with the commonly used biomarker protein carbonylation, confirmed that albumin thiol oxidation is the more sensitive plasma biomarker of oxidative stress occurring in muscle tissue. We show that plasma albumin oxidation reflects muscle dystropathology, as increased after exercise and decreased after taurine treatment of mdx mice. These data support the use of albumin thiol oxidation as a blood biomarker of dystropathology to assist with advancing clinical development of therapies for DMD.
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Tunç A. Early predictors of functional disability in Guillain-Barré Syndrome. Acta Neurol Belg 2019; 119:555-559. [PMID: 30963477 DOI: 10.1007/s13760-019-01133-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 04/02/2019] [Indexed: 02/06/2023]
Abstract
This study investigated the predictors of prognosis at admission and after the first month in Guillain-Barré syndrome (GBS) patients. This retrospective study used the electronic records of 81 GBS patients. Age, gender, previous GBS history, antecedent febrile illness and presence of cranial nerve dysfunction were recorded. Detailed neurological examinations, routine biochemical and haematological investigations, cerebrospinal fluid (CSF) analysis and electrophysiological studies, GBS subtypes and treatments were assessed. Hughes disability scores (HDSs) were evaluated at the end of the first day and first month. The GBS patient group included 44 male (54.3%) and 37 female (45.7%) patients. The mean age was 52.2 ± 18.5. The mean HDS score was 2.96 at admission and 1.94 at the end of the first month. Plasma sodium, albumin, and CSF protein levels were significantly correlated with low admission HDS scores (p = 0.03, p = 0.011, p = 0.036, and p < 0.001, respectively). Age, plasma sodium, albumin, neutrophil, neutrophil/lymphocyte ratio (NLR) levels, C-reactive protein (CRP) and CSF protein levels were significantly correlated with poor prognosis at the end of the first month (p < 0.05). Concomitant cranial nerve palsies were significantly correlated with low HDS scores (p = 0.011, p = 0.02) but antecedent events were not correlated with functional disability (p = 0.686, p = 0.413). Decreased albumin and sodium levels and increased CSF protein levels indicated poor GBS prognosis. Higher age, elevated NLR, and higher CRP levels indicated worse prognosis at the end of the first month. However, further studies are needed.
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Affiliation(s)
- Abdulkadir Tunç
- Clinic of Neurology, Sakarya Training and Research Hospital, Sakarya University, Sakarya, Turkey.
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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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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: 1.0] [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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Burini RC, Borges-Santos MD, Moreto F, Yu YM. Comparative effects of acute-methionine loading on the plasma sulfur-amino acids in NAC-supplemented HIV+ patients and healthy controls. Amino Acids 2018; 50:569-576. [PMID: 29392418 DOI: 10.1007/s00726-018-2538-2] [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] [Received: 10/25/2017] [Accepted: 01/12/2018] [Indexed: 01/23/2023]
Abstract
In this study, an acute overloading of methionine (MetLo) was used to investigate the trassulfuration pathway response comparing healthy controls and HIV+ patients under their usual diet and dietary N-acetyl-L-cysteine (NAC) supplementation. MetLo (0.1 g Met/kg mass weight) was given after overnight fasting to 20 non-HIV+ control subjects (Co) and 12 HIV+ HAART-treated patients. Blood samples were taken before and after the MetLo in two different 7-day dietary situations, with NAC (1 g/day) or with their usual diet (UD). The amino acids (Met, Hcy, Cys, Tau, Ser, Glu and Gln) and GSH were determined by HPLC and their inflow rate into circulation (plasma) was estimated by the area under the curve (AUC). Under UD, the HIV+ had lower plasma GSH and amino acids (excepting Hcy) and higher oxidative stress (GSSG/GSH ratio), similar remethylation (RM: Me/Hcy + Ser ratio), transmethylation (TM; Hcy/Met ratio) and glutaminogenesis (Glu/Gln ratio), lower transsulfuration (TS: Cys/Hcy + Ser ratio) and Cys/Met ratio and, higher synthetic rates of glutathione (GG: GSH/Cys ratio) and Tau (TG: Tau/Cys ratio). NAC supplementation changed the HIV pattern by increasing RM above control, normalizing plasma Met and TS and, increasing plasma GSH and GG above controls. However, plasma Cys was kept always below controls probably, associatively to its higher consumption in GG (more GSSG than GSH) and TG. The failure of restoring normal Cys by MetLo, in addition to NAC, in HIV+ patients seems to be related to increased flux of Cys into GSH and Tau pathways, probably strengthening the cell-antioxidant capacity against the HIV progression (registered at http://www.clinicaltrials.gov , NCT00910442).
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Affiliation(s)
- Roberto Carlos Burini
- Department of Public Health, Center for Nutritional and Physical Exercise Metabolism, School of Medicine, UNESP-Sao Paulo State University, Campus Botucatu, Botucatu, Sao Paulo, Brazil.
| | - Maria Doroteia Borges-Santos
- Department of Public Health, Center for Nutritional and Physical Exercise Metabolism, School of Medicine, UNESP-Sao Paulo State University, Campus Botucatu, Botucatu, Sao Paulo, Brazil
| | - Fernando Moreto
- Department of Public Health, Center for Nutritional and Physical Exercise Metabolism, School of Medicine, UNESP-Sao Paulo State University, Campus Botucatu, Botucatu, Sao Paulo, Brazil
| | - Yong- Ming Yu
- Department of Surgery, Harvard Medical School, Massachusetts General Hospital, Shriners Burns Hospital, Boston, MA, USA
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Li Y, Luo Z, Wu X, Zhu J, Yu K, Jin Y, Zhang Z, Zhao S, Zhou L. Proteomic Analyses of Cysteine Redox in High-Fat-Fed and Fasted Mouse Livers: Implications for Liver Metabolic Homeostasis. J Proteome Res 2018; 17:129-140. [PMID: 29098862 DOI: 10.1021/acs.jproteome.7b00431] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Intensive oxidative stress occurs during high-fat-diet-induced hepatic fat deposition, suggesting a critical role for redox signaling in liver metabolism. Intriguingly, evidence shows that fasting could also result in redox-profile changes largely through reduced oxidant or increased antioxidant levels. However, a comprehensive landscape of redox-modified hepatic substrates is lacking, thereby hindering our understanding of liver metabolic homeostasis. We employed a proteomic approach combining iodoacetyl tandem mass tag and nanoliquid chromatography tandem mass spectrometry to quantitatively probe the effects of high-fat feeding and fasting on in vivo redox-based cysteine modifications. Compared with control groups, ∼60% of cysteine residues exhibited downregulated oxidation ratios by fasting, whereas ∼94% of these ratios were upregulated by high-fat feeding. Importantly, in fasted livers, proteins exhibiting diminished cysteine oxidation were annotated in pathways associated with fatty acid metabolism, carbohydrate metabolism, insulin, peroxisome proliferator-activated receptors, and oxidative respiratory chain signaling, suggesting that fasting-induced redox changes targeted major metabolic pathways and consequently resulted in hepatic lipid accumulation.
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Affiliation(s)
- Yixing Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University , Nanning 530004, P.R. China
| | - Zupeng Luo
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University , Nanning 530004, P.R. China
| | - Xilong Wu
- Jingjie PTM Biolab Co. Ltd. , Hangzhou Economic and Technological Development Area, Hangzhou 310018, P.R. China
| | - Jun Zhu
- Jingjie PTM Biolab Co. Ltd. , Hangzhou Economic and Technological Development Area, Hangzhou 310018, P.R. China
| | - Kai Yu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University , Nanning 530004, P.R. China
| | - Yi Jin
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University , Nanning 530004, P.R. China
| | - Zhiwang Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University , Nanning 530004, P.R. China
| | - Shuhong Zhao
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University , Wuhan, P.R. China
| | - Lei Zhou
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University , Nanning 530004, P.R. China
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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: 2.1] [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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Watanabe H, Imafuku T, Otagiri M, Maruyama T. Clinical Implications Associated With the Posttranslational Modification-Induced Functional Impairment of Albumin in Oxidative Stress-Related Diseases. J Pharm Sci 2017; 106:2195-2203. [PMID: 28302542 DOI: 10.1016/j.xphs.2017.03.002] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 02/28/2017] [Accepted: 03/03/2017] [Indexed: 02/08/2023]
Abstract
Recent research findings indicate that the posttranslational modification of human serum albumin (HSA) such as oxidation, glycation, truncation, dimerization, and carbamylation is related to certain types of diseases. We report herein on a simple and rapid analytical method, using an electrospray ionization time-of-flight mass spectrometry technique, that allows posttranslational modifications of HSA to be quantitatively and qualitatively evaluated with a high degree of sensitivity. In patients with chronic liver disease, chronic renal disease, and diabetes mellitus, an increase in the level of oxidized cysteine-34 (Cys-34) of HSA accompanied by a decrease in the level of reduced Cys-34 was observed. The redox status of Cys-34 was correlated with ligand binding and the antioxidative functions of HSA. Available evidence indicates that monitoring the redox state of Cys-34 not only could be a useful marker for evaluating the progression of disease and its complications but also would permit therapeutic efficacy to be predicted. The redox state of Cys-34 was also used as an index of the quality of HSA preparations. These data suggest that monitoring the posttranslational modifications of HSA can be important, because the function of HSA is related not only to its serum concentration but also to the preservation of its structural integrity under disease conditions.
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Affiliation(s)
- Hiroshi Watanabe
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan; Center for Clinical Pharmaceutical Sciences, School of Pharmacy, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Tadashi Imafuku
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Masaki Otagiri
- Faculty of Pharmaceutical Sciences, Sojo University, 4-22-1 Ikeda, Nishi-ku, Kumamoto 860-0822, Japan; DDS Research Institute, Sojo University, 4-22-1 Ikeda, Nishi-ku, Kumamoto 860-0822, Japan
| | - Toru Maruyama
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan; Center for Clinical Pharmaceutical Sciences, School of Pharmacy, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan.
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12
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Abstract
Leakage of the blood-brain barrier (BBB) is a common pathological feature in multiple sclerosis (MS). Following a breach of the BBB, albumin, the most abundant protein in plasma, gains access to CNS tissue where it is exposed to an inflammatory milieu and tissue damage, e.g., demyelination. Once in the CNS, albumin can participate in protective mechanisms. For example, due to its high concentration and molecular properties, albumin becomes a target for oxidation and nitration reactions. Furthermore, albumin binds metals and heme thereby limiting their ability to produce reactive oxygen and reactive nitrogen species. Albumin also has the potential to worsen disease. Similar to pathogenic processes that occur during epilepsy, extravasated albumin could induce the expression of proinflammatory cytokines and affect the ability of astrocytes to maintain potassium homeostasis thereby possibly making neurons more vulnerable to glutamate exicitotoxicity, which is thought to be a pathogenic mechanism in MS. The albumin quotient, albumin in cerebrospinal fluid (CSF)/albumin in serum, is used as a measure of blood-CSF barrier dysfunction in MS, but it may be inaccurate since albumin levels in the CSF can be influenced by multiple factors including: 1) albumin becomes proteolytically cleaved during disease, 2) extravasated albumin is taken up by macrophages, microglia, and astrocytes, and 3) the location of BBB damage affects the entry of extravasated albumin into ventricular CSF. A discussion of the roles that albumin performs during MS is put forth.
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Affiliation(s)
- Steven M LeVine
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA.
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13
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Ulivelli M, Priora R, Di Giuseppe D, Coppo L, Summa D, Margaritis A, Frosali S, Bartalini S, Martini G, Cerase A, Di Simplicio P. Homocysteinemia control by cysteine in cerebral vascular patients after methionine loading test: evidences in physiological and pathological conditions in cerebro-vascular and multiple sclerosis patients. Amino Acids 2016; 48:1477-89. [PMID: 26969256 DOI: 10.1007/s00726-016-2207-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 02/23/2016] [Indexed: 10/22/2022]
Abstract
The toxicity risk of hyperhomocysteinemia is prevented through thiol drug administration which reduces plasma total homocysteine (tHcy) concentrations by activating thiol exchange reactions. Assuming that cysteine (Cys) is a homocysteinemia regulator, the hypothesis was verified in healthy and pathological individuals after the methionine loading test (MLT). The plasma variations of redox species of Cys, Hcy, cysteinylglycine, glutathione and albumin (reduced, HS-ALB, and at mixed disulfide, XSS-ALB) were compared in patients with cerebral small vessels disease (CSVD) (n = 11), multiple sclerosis (MS) (n = 12) and healthy controls (n = 11) at 2-4-6 h after MLT. In MLT-treated subjects, the activation of thiol exchange reactions provoked significant changes over time in redox species concentrations of Cys, Hcy, and albumin. Significant differences between controls and pathological groups were also observed. In non-methionine-treated subjects, total Cys concentrations, tHcy and thiol-protein mixed disulfides (CSS-ALB, HSS-ALB) of CSVD patients were higher than controls. After MLT, all groups displayed significant cystine (CSSC) increases and CSS-ALB decreases, that in pathological groups were significantly higher than controls. These data would confirm the Cys regulatory role on the homocysteinemia; they also explain that the Cys-Hcy mixed disulfide excretion is an important point of hyperhomocysteinemia control. Moreover, in all groups after MLT, significant increases in albumin concentrations, named total albumin (tALB) and measured as sum of HS-ALB (spectrophometric), and XSS-ALB (assayed at HPLC) were observed. tALB increases, more pronounced in healthy than in the pathological subjects, could indicate alterations of albumin equilibria between plasma and other extracellular spaces, whose toxicological consequences deserve further studies.
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Affiliation(s)
- Monica Ulivelli
- Department of Medicine, Surgery, and Neuroscience, University of Siena, 53100, Siena, Italy.,Pharmacology Unit, Department of Neuroscience, University of Siena, 53100, Siena, Italy
| | - Raffaella Priora
- Pharmacology Unit, Department of Neuroscience, University of Siena, 53100, Siena, Italy
| | - Danila Di Giuseppe
- Pharmacology Unit, Department of Neuroscience, University of Siena, 53100, Siena, Italy
| | - Lucia Coppo
- Pharmacology Unit, Department of Neuroscience, University of Siena, 53100, Siena, Italy
| | - Domenico Summa
- Pharmacology Unit, Department of Neuroscience, University of Siena, 53100, Siena, Italy
| | - Antonios Margaritis
- Pharmacology Unit, Department of Neuroscience, University of Siena, 53100, Siena, Italy
| | - Simona Frosali
- Pharmacology Unit, Department of Neuroscience, University of Siena, 53100, Siena, Italy
| | - Sabina Bartalini
- Department of Medicine, Surgery, and Neuroscience, University of Siena, 53100, Siena, Italy.,Pharmacology Unit, Department of Neuroscience, University of Siena, 53100, Siena, Italy
| | - Giuseppe Martini
- Stroke Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, 53100, Siena, Italy
| | - Alfonso Cerase
- Neuroimaging and Neurointervention, Azienda Ospedaliera Universitaria Senese, 53100, Siena, Italy
| | - Paolo Di Simplicio
- Pharmacology Unit, Department of Neuroscience, University of Siena, 53100, Siena, Italy.
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14
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Gironi M, Borgiani B, Mariani E, Cursano C, Mendozzi L, Cavarretta R, Saresella M, Clerici M, Comi G, Rovaris M, Furlan R. Oxidative stress is differentially present in multiple sclerosis courses, early evident, and unrelated to treatment. J Immunol Res 2014; 2014:961863. [PMID: 24741637 PMCID: PMC3984797 DOI: 10.1155/2014/961863] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2013] [Revised: 01/13/2014] [Accepted: 01/27/2014] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Oxidative stress is well documented in multiple sclerosis (MS) lesions, but its correspondence at peripheral level is still controversial. Objective. To evaluate peripheral oxidative stress markers in MS patients. METHODS We studied total blood levels of Coenzyme Q10 (CoQ10), oxidized and reduced forms of glutathione, malondialdehyde, reactive oxygen species (ROS), anti-oxidized-low-density lipoproteins (anti-oxLDL) antibodies, and antioxidant power (PAO) in 87 patients with different MS clinical phenotypes and in 77 controls. RESULTS CoQ10 was lower whereas anti-oxLDL antibodies titer was higher in MS patients than in controls. The benign variant of MS displayed both higher CoQ10 and higher anti-oxLDL than other MS clinical variants. Female patients had lower CoQ10 and PAO and higher ROS than male patients. Differences were greater in younger patients with shorter disease duration. Surprisingly, there was no difference for these markers between treated and untreated patients. CONCLUSION We found lower antioxidant agents and higher anti-oxLDL antibodies in MS, and the highest antibody titers occurred in the benign form. We suggest that natural anti-oxLDL antibodies can be protective against MS, saving blood brain barrier integrity. Our findings also suggest that milder MS is associated with a distinct oxidative stress pattern, which may provide a useful biomarker of disease prognosis.
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Affiliation(s)
- Maira Gironi
- INSPE, Ospedale San Raffaele, Via Olgettina 60, 20132 Milano, Italy ; CAM, Centro Polidiagnostico, Viale Elvezia Angolo Via Martiri delle Foibe 1, Monza, Italy
| | - Bruno Borgiani
- INSPE, Ospedale San Raffaele, Via Olgettina 60, 20132 Milano, Italy ; CAM, Centro Polidiagnostico, Viale Elvezia Angolo Via Martiri delle Foibe 1, Monza, Italy
| | - Enrica Mariani
- CAM, Centro Polidiagnostico, Viale Elvezia Angolo Via Martiri delle Foibe 1, Monza, Italy
| | - Cristina Cursano
- CAM, Centro Polidiagnostico, Viale Elvezia Angolo Via Martiri delle Foibe 1, Monza, Italy
| | - Laura Mendozzi
- Fondazione IRCCS, S. Maria Nascente, Don Gnocchi, Via Alfonso Capecelatro 66, 20148 Milano, Italy
| | - Rossella Cavarretta
- Fondazione IRCCS, S. Maria Nascente, Don Gnocchi, Via Alfonso Capecelatro 66, 20148 Milano, Italy
| | - Marina Saresella
- Fondazione IRCCS, S. Maria Nascente, Don Gnocchi, Via Alfonso Capecelatro 66, 20148 Milano, Italy
| | - Mario Clerici
- Fondazione IRCCS, S. Maria Nascente, Don Gnocchi, Via Alfonso Capecelatro 66, 20148 Milano, Italy
| | - Giancarlo Comi
- INSPE, Ospedale San Raffaele, Via Olgettina 60, 20132 Milano, Italy
| | - Marco Rovaris
- Fondazione IRCCS, S. Maria Nascente, Don Gnocchi, Via Alfonso Capecelatro 66, 20148 Milano, Italy
| | - Roberto Furlan
- INSPE, Ospedale San Raffaele, Via Olgettina 60, 20132 Milano, Italy
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15
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The control of hyperhomocysteinemia through thiol exchange mechanisms by mesna. Amino Acids 2013; 46:429-39. [DOI: 10.1007/s00726-013-1636-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Accepted: 12/03/2013] [Indexed: 10/25/2022]
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16
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Kovacic P, Somanathan R. Redox processes in neurodegenerative disease involving reactive oxygen species. Curr Neuropharmacol 2013; 10:289-302. [PMID: 23730253 PMCID: PMC3520039 DOI: 10.2174/157015912804143487] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Revised: 06/12/2012] [Accepted: 06/20/2012] [Indexed: 11/22/2022] Open
Abstract
Much attention has been devoted to neurodegenerative diseases involving redox processes. This review comprises an update involving redox processes reported in the considerable literature in recent years. The mechanism involves reactive oxygen species and oxidative stress, usually in the brain. There are many examples including Parkinson’s, Huntington’s, Alzheimer’s, prions, Down’s syndrome, ataxia, multiple sclerosis, Creutzfeldt-Jacob disease, amyotrophic lateral sclerosis, schizophrenia, and Tardive Dyskinesia. Evidence indicates a protective role for antioxidants, which may have clinical implications. A multifaceted approach to mode of action appears reasonable.
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Affiliation(s)
- Peter Kovacic
- Department of Chemistry and Biochemistry, San Diego State University, San Diego CA 92182 USA
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17
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Jagadish B, Guntle GP, Zhao D, Gokhale V, Ozumerzifon TJ, Ahad AM, Mash EA, Raghunand N. Redox-active magnetic resonance imaging contrast agents: studies with thiol-bearing 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetracetic acid derivatives. J Med Chem 2012; 55:10378-86. [PMID: 23148501 DOI: 10.1021/jm300736f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The synthesis and structure-activity relationships of a homologous series of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid gadolinium(III) complexes bearing thiol-terminated alkyl side chains from three to nine carbons in length are reported. The observed binding with human serum albumin (HSA) of the compounds having C-3 through C-7 side chain lengths was inhibited by homocysteine in a manner consistent with single-site binding. The observed binding with HSA of the compounds having C-8 and C-9 side chain lengths was only partly inhibited by homocysteine, consistent with multisite binding. The binding affinity of the C-7 compound could be related to the HSA oxidation state. 2D 1H-1H NMR TOCSY provided evidence of covalent binding of the europium analog of the C-6 compound to HSA-Cys34. The longitudinal water-proton MRI relaxivities of the gadolinium complexes at 7 T increased upon binding to HSA. On the basis of these results, the C-6 and C-7 compounds were identified as promising redox-sensitive MRI contrast agents.
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Affiliation(s)
- Bhumasamudram Jagadish
- Department of Chemistry and Biochemistry, Arizona Cancer Center, University of Arizona, Tucson, Arizona 85721-0041, United States
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18
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Zoccolella S, Tortorella C, Iaffaldano P, Direnzo V, D'Onghia M, Paolicelli D, Livrea P, Trojano M. Elevated plasma homocysteine levels in patients with multiple sclerosis are associated with male gender. J Neurol 2012; 259:2105-10. [PMID: 22421956 DOI: 10.1007/s00415-012-6464-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Revised: 02/16/2012] [Accepted: 02/17/2012] [Indexed: 01/21/2023]
Abstract
Elevated homocysteine (Hcy) levels exert several neurotoxic actions and vascular dysfunctions that may be involved in pathogenesis and progression of multiple sclerosis (MS). The effective role of Hcy in MS however remains to be determined. The aim of this work was to compare plasma Hcy levels in MS patients and neurological disease controls (NDC) and to evaluate their relationships with clinical and demographic variables. In this cross-sectional study, we examined plasma Hcy levels in 217 patients with MS [53 clinically isolated syndromes (CIS) suggestive of MS, 134 relapsing remitting (RR), 23 secondary progressive (SP) and seven primary progressive (PP) MS], recruited among patients attending a tertiary clinical center in southern Italy and in 219 age/sex-matched controls. Median Hcy levels were slightly higher in MS patients compared to NDC (9.1 μmol/l; range, 3.4-35.9 vs. 8.6, range 3.5-27.4; p = 0.02). Median Hcy concentrations were increased in males more than in females in the MS population (10.4 vs. 8.4; p < 0.0001), whereas no differences across genders were found in NDC (9.1 vs. 8.5). Hcy levels were higher in male MS patients compared to the male NDC patients (p = 0.001). Patients with CIS had lower Hcy (7.5 μmol/l; p = 0.004) compared to patients with RR (9.5 μmol/l), SP (10.1 μmol/l) and PP (9.9 μmol/l). Median Hcy concentration was higher in patients with disease duration longer than 22 months (9.7 vs. 8.6 μmol/l; p = 0.02). Plasma Hcy levels are increased in patients with definite MS. Higher Hcy levels are associated with male sex, suggesting a role of Hcy in neurodegenerative processes of MS, which are prominent in male patients.
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Affiliation(s)
- Stefano Zoccolella
- Department of Neurosciences and Organs of Senses, University of Bari, Ospedale Policlinico, P.zza G. Cesare 11, 70124, Bari, Italy
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19
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Iwao Y, Ishima Y, Yamada J, Noguchi T, Kragh-Hansen U, Mera K, Honda D, Suenaga A, Maruyama T, Otagiri M. Quantitative evaluation of the role of cysteine and methionine residues in the antioxidant activity of human serum albumin using recombinant mutants. IUBMB Life 2012; 64:450-4. [DOI: 10.1002/iub.567] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Accepted: 08/01/2011] [Indexed: 12/14/2022]
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20
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Tasset I, Agüera E, Sánchez-López F, Feijóo M, Giraldo AI, Cruz AH, Gascón F, Túnez I. Peripheral oxidative stress in relapsing-remitting multiple sclerosis. Clin Biochem 2012; 45:440-4. [PMID: 22330938 DOI: 10.1016/j.clinbiochem.2012.01.023] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2011] [Revised: 01/12/2012] [Accepted: 01/26/2012] [Indexed: 10/14/2022]
Abstract
OBJECTIVES To evaluate levels of oxidative stress in blood samples in patients with relapsing-remitting MS (RR-MS). DESIGN AND METHODS Peripheral blood samples were collected from 24 RR-MS patients and 15 healthy controls. Levels of the following were measured: carbonylated proteins, 8-hydroxy-2'deoxyguanosine (8OHdG), total glutathione, reduced glutathione (GSH), oxidized glutathione (GSSG), GSH/GSSG ratio, superoxide dismutase (SOD), glutathione peroxidase (GPx), glutathione reductase (GRd), glutathione-S-transferase (GST), myeloperoxidase (MPO), antioxidant gap, total antioxidant capacity (PAO), global oxidative stress (GOS), serum vascular cell adhesion molecule-1 (sVCAM-1) and serum inter-cellular adhesion molecule 1 (sICAM-1). RESULTS Values for carbonylated proteins, 8OHdG, total glutathione, GSH, GSH/GSSG ratio, SOD, GRd and GOS were significantly higher in RR-MS patients than in healthy controls. By contrast, PAO, GSSG, GPx and GST were lower in RR-MS patients. CONCLUSION Oxidative stress plays a major role in MS, and is observed prior to relapse.
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Affiliation(s)
- Inmaculada Tasset
- Departamento de Bioquímica y Biología Molecular, Facultad de Medicina/Instituto Maimónides de Investigación Biomédica de Córdoba/Universidad de Córdoba, Spain
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Peng F, Yang Y, Liu J, Jiang Y, Zhu C, Deng X, Hu X, Chen X, Zhong X. Low antioxidant status of serum uric acid, bilirubin and albumin in patients with neuromyelitis optica. Eur J Neurol 2011; 19:277-83. [DOI: 10.1111/j.1468-1331.2011.03488.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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22
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In vitro inhibition of human and rat platelets by NO donors, nitrosoglutathione, sodium nitroprusside and SIN-1, through activation of cGMP-independent pathways. Pharmacol Res 2011; 64:289-97. [PMID: 21539916 DOI: 10.1016/j.phrs.2011.03.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Revised: 03/28/2011] [Accepted: 03/29/2011] [Indexed: 11/23/2022]
Abstract
Three different NO donors, S-nitrosoglutathione (GSNO), sodium nitroprusside (SNP) and 3-morpholino-sydnonimine hydrochloride (SIN-1) were used in order to investigate mechanisms of platelet inhibition through cGMP-dependent and -independent pathways both in human and rat. To this purpose, we also evaluated to what extent cGMP-independent pathways were related with the entity of NO release from each drug. SNP, GSNO and SIN-1 (100 μM) effects on platelet aggregation, in the presence or absence of a soluble guanylate cyclase inhibitor (ODQ), on fibrinogen receptor (α(IIb)β(3)) binding to specific antibody (PAC-1), and on the entity of NO release from NO donors in human and rat platelet rich plasma (PRP) were measured. Inhibition of platelet aggregation (induced by ADP) resulted to be greater in human than in rat. GSNO was the most powerful inhibitor (IC(50) values, μM): (a) in human, GSNO=0.52±0.09, SNP=2.83 ± 0.53, SIN-1=2.98 ± 1.06; (b) in rat, GSNO = 28.4 ± 6.9, SNP = 265 ± 73, SIN-1=108 ± 85. GSNO action in both species was mediated by cGMP-independent mechanisms and characterized by the highest NO release in PRP. SIN-1 and SNP displayed mixed mechanisms of inhibition of platelet aggregation (cGMP-dependent and independent), except for SIN-1 in rat (cGMP-dependent), and respectively lower or nearly absent NO delivery. Conversely, all NO-donors prevalently inhibited PAC-1 binding to α(IIb)β(3) through cGMP-dependent pathways. A modest relationship between NO release from NO donors and cGMP-independent responses was found. Interestingly, the species difference in NO release from GSNO and inhibition by cGMP-independent mechanism was respectively attributed to S-nitrosylation of non-essential and essential protein SH groups.
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