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Adamczyk-Sowa M, Bieszczad-Bedrejczuk E, Galiniak S, Rozmiłowska I, Czyżewski D, Bartosz G, Sadowska-Bartosz I. Oxidative modifications of blood serum proteins in myasthenia gravis. J Neuroimmunol 2017; 305:145-153. [PMID: 28284335 DOI: 10.1016/j.jneuroim.2017.01.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 01/27/2017] [Accepted: 01/28/2017] [Indexed: 01/19/2023]
Abstract
Myasthenia gravis (MG) is an autoimmune disease caused by production of antibodies against acetylcholine receptors of the neuromuscular junction (Ab). The aim of this study was to ascertain if oxidative stress accompanies MG by estimation of the several independent parameters of oxidative damage, mainly the levels of oxidative modifications of blood serum proteins. The group studied consisted of 50 MG patients (28 females and 22 males), 24 with ocular MG (OMG) and 26 with generalized MG (GMG), of mean age of 66.7 (30-81)years (y), mean disease duration of 9.5 (0.5-34)y, mean level of Ab of 8.9 (0.1-85)nmol/ml, and 25 age-matched healthy controls. MG patients were stratified into groups according to disease duration (<5y or >5y), Ab level (low, <3 or high, >3nmol/l) as well as symptoms (GMG or OMG). Glycophore fluorescence was increased in OMGa. Dityrosine was increased in both types of MGc, in patients ill <5b and >5cy, with lowc and highc levels of Ab. N-formylkynurenine was increased in OMGa and GMGb, in both disease duration groupsa, in the group of low Aba. Kynurenine was increased in the group with high Aba. Tryptophan fluorescence was decreased in OMGb and GMGc, in patients ill for <5b and >5ay, with lowa and highc Ab. Serum thiol group concentration were decreased in GMGc, in patients ill for >5yb. AOPP level was elevated in OMGa, in patients ill for >5ya with high Aba. Protein carbonyls were increased in both OMGc and GMGc, in patients ill for >5ay, with lowb and highb Ab. FRAP and ABTS• scavenging by fast antioxidants were unchanged, but ABTS• scavenging by slow antioxidants was lower in OMGb and GMGc, in patients ill for >5cy, in patients with lowc and highb Ab (ap<0.05, bp<0.01, cp<0.001). These results demonstrate systemic oxidative stress in MG, suggesting therapeutic use of antioxidants.
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Affiliation(s)
- Monika Adamczyk-Sowa
- Department of Neurology in Zabrze, Medical University of Silesia, 3-go Maja St. 13-15, Zabrze 41-800, Poland
| | - Edyta Bieszczad-Bedrejczuk
- Department of Biochemistry and Cell Biology, Faculty of Biology and Agriculture, University of Rzeszów, Zelwerowicza St. 4, 35-601 Rzeszów, Poland
| | - Sabina Galiniak
- Department of Biochemistry and Cell Biology, Faculty of Biology and Agriculture, University of Rzeszów, Zelwerowicza St. 4, 35-601 Rzeszów, Poland
| | - Izabela Rozmiłowska
- Department of Neurology in Zabrze, Medical University of Silesia, 3-go Maja St. 13-15, Zabrze 41-800, Poland
| | - Damian Czyżewski
- Department of Thoracic Surgery, SMDZ in Zabrze, Medical University of Silesia, 3-go Maja St. 13-15, Zabrze 41-800, Poland
| | - Grzegorz Bartosz
- Department of Thoracic Surgery, SMDZ in Zabrze, Medical University of Silesia, 3-go Maja St. 13-15, Zabrze 41-800, Poland; Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska St. 141/143, 90-236 Lodz, Poland
| | - Izabela Sadowska-Bartosz
- Department of Biochemistry and Cell Biology, Faculty of Biology and Agriculture, University of Rzeszów, Zelwerowicza St. 4, 35-601 Rzeszów, Poland.
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802
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Bioactive Nutrients and Nutrigenomics in Age-Related Diseases. Molecules 2017; 22:molecules22010105. [PMID: 28075340 PMCID: PMC6155887 DOI: 10.3390/molecules22010105] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 12/20/2016] [Accepted: 01/03/2017] [Indexed: 01/10/2023] Open
Abstract
The increased life expectancy and the expansion of the elderly population are stimulating research into aging. Aging may be viewed as a multifactorial process that results from the interaction of genetic and environmental factors, which include lifestyle. Human molecular processes are influenced by physiological pathways as well as exogenous factors, which include the diet. Dietary components have substantive effects on metabolic health; for instance, bioactive molecules capable of selectively modulating specific metabolic pathways affect the development/progression of cardiovascular and neoplastic disease. As bioactive nutrients are increasingly identified, their clinical and molecular chemopreventive effects are being characterized and systematic analyses encompassing the "omics" technologies (transcriptomics, proteomics and metabolomics) are being conducted to explore their action. The evolving field of molecular pathological epidemiology has unique strength to investigate the effects of dietary and lifestyle exposure on clinical outcomes. The mounting body of knowledge regarding diet-related health status and disease risk is expected to lead in the near future to the development of improved diagnostic procedures and therapeutic strategies targeting processes relevant to nutrition. The state of the art of aging and nutrigenomics research and the molecular mechanisms underlying the beneficial effects of bioactive nutrients on the main aging-related disorders are reviewed herein.
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