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Durmaz Celik N, Ozben S, Ozben T. Unveiling Parkinson's disease through biomarker research: current insights and future prospects. Crit Rev Clin Lab Sci 2024:1-17. [PMID: 38529882 DOI: 10.1080/10408363.2024.2331471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 03/13/2024] [Indexed: 03/27/2024]
Abstract
Parkinson's disease (PD) is a neurodegenerative condition marked by the gradual depletion of dopaminergic neurons in the substantia nigra. Despite substantial strides in comprehending potential causative mechanisms, the validation of biomarkers with unequivocal evidence for routine clinical application remains elusive. Consequently, the diagnosis heavily relies on patients' clinical assessments and medical backgrounds. The imperative need for diagnostic and prognostic biomarkers arises due to the prevailing limitations of treatments, which predominantly address symptoms without modifying the disease course. This comprehensive review aims to elucidate the existing landscape of diagnostic and prognostic biomarkers for PD, drawing insights from contemporary literature.
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Affiliation(s)
- Nazlı Durmaz Celik
- Department of Neurology, Eskisehir Osmangazi University Faculty of Medicine, Eskisehir, Turkey
| | - Serkan Ozben
- Department of Neurology, University of Health Sciences, Antalya Training and Research Hospital, Antalya, Turkey
| | - Tomris Ozben
- Department of Medical Biochemistry, Medical Faculty, Akdeniz University, Antalya, Turkey
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Ozben S, Kucuksayan E, Koseoglu M, Erel O, Neselioglu S, Ozben T. Plasma thiol/disulphide homeostasis changes in patients with relapsing-remitting multiple sclerosis. Int J Clin Pract 2021; 75:e14241. [PMID: 33891773 DOI: 10.1111/ijcp.14241] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 04/16/2021] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Multiple sclerosis (MS) is a neuroinflammatory disease and inflammation and oxidative stress play important roles in its pathology. Thiol/disulphide homeostasis (TDH) is a special oxidative stress biomarker that has been found to be affected in several disorders including MS. There is no study demonstrating the effects of attack status of the relapsing-remitting multiple sclerosis (RRMS) patients on TDH levels. Our aim was to determine TDH levels in three different periods of RRMS patients and healthy individuals. METHODS The study was carried out in 29 patients with RRMS without a prior attack in the last twelve months (MS Control), 21 RRMS patients having a clinical acute attack within the last week (MS relapse), 12 of 21 MS relapse patients one month after the onset of attack and following 1000 mg methylprednisolone for 7 days (MS Remission) and 30 age- and sex-matched healthy individuals. TDH status was determined using an automated spectrophotometric analysis method. TDH levels in all patient groups and control subjects were compared with each other. RESULTS The lowest native thiol, total thiol levels and native thiol/total thiol ratio were found in the MS relapse patients in comparison to the MS control, MS remission groups and healthy controls. In contrast, disulphide levels, disulphide/native thiol and disulphide/total thiol ratios were highest in the MS relapse group compared to the other patient groups and healthy subjects. CONCLUSION Our findings indicate that increased oxidative stress in RRMS patients is reflected with decreased native and total thiol and increased disulphide levels. Since the formation of disulphide bonds is reversible, the progression of RRMS involving abnormal TDH may be controlled, converting disulphides to thiols. So, we suggest determining the dynamic TDH status as a novel and special biomarker in the diagnosis and prognosis of the RRMS patients.
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Affiliation(s)
- Serkan Ozben
- Department of Neurology, Antalya Training and Research Hospital, Antalya, Turkey
| | - Ertan Kucuksayan
- Department of Medical Biochemistry, Medical Faculty, Alanya Alaaddin Keykubat University (ALKU), Alanya, Antalya, Turkey
| | - Mesrure Koseoglu
- Department of Neurology, Bakirkoy Psychiatry and Neurology Research and Training Hospital, Istanbul, Turkey
| | - Ozcan Erel
- Department of Biochemistry, Medical Faculty, Yildirim Beyazit University, Ankara, Turkey
| | - Salim Neselioglu
- Department of Biochemistry, Medical Faculty, Yildirim Beyazit University, Ankara, Turkey
| | - Tomris Ozben
- Department of Biochemistry, Medical Faculty, Akdeniz University, Antalya, Turkey
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Kucuksayan E, Ozben S, Topaloglu Tuac S, Koseoglu M, Erel O, Neselioglu S, Ozben T. Plasma thiol/disulphide homeostasis changes in patients with restless legs syndrome. Clin Chem Lab Med 2021; 59:1257-1265. [PMID: 33675215 DOI: 10.1515/cclm-2020-1659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 02/22/2021] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Restless legs syndrome (RLS) is a common neurological condition. Oxidative stress plays an important role in its pathogenesis. Thiol-disulphide homeostasis (TDH) is a new biomarker of oxidative stress. We studied plasma TDH to determine whether TDH could be used as a new biomarker for RLS and evaluated correlations between TDH and various disease severity rating scales. METHODS A total of 25 RLS patients and 25 healthy controls were included into the study. TDH status was determined using an automated spectrophotometric analysis method and correlations were analyzed between the TDH status and various disease rating scales in the RLS patients. RESULTS Plasma total (401±27 μmol/L) and native thiol (354±30 μmol/L) levels were significantly lower, but disulphide level (24±6 μmol/L) was significantly (<0.0001) higher in the RLS patients compared to the controls (455±36, 424±37, 15±5 μmol/L, respectively). The disulphide/native thiol and disulphide/total thiol ratios increased, in contrast, native thiol/total thiol ratio decreased significantly in the RLS patients compared to the healthy controls (<0.0001). The disulphide levels correlated positively with age and various rating scores of the RLS patients. International Restless Legs Syndrome Study Group (IRLSSG) rating score and age correlated negatively with the total and native thiol levels. CONCLUSIONS Our findings indicate increased oxidative stress in the RLS patients reflected by decreased native and total thiol, and increased disulphide levels and positive correlations between the disulphide levels and various rating scores. We suggest dynamic TDH status to be used as a novel biomarker for the diagnosis and follow-up of the RLS patients.
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Affiliation(s)
- Ertan Kucuksayan
- Department of Medical Biochemistry, Medical Faculty, Alanya Alaaddin Keykubat University (ALKU), Antalya, Turkey
| | - Serkan Ozben
- Department of Neurology, Antalya Training and Research Hospital, University of Health Sciences, Antalya, Turkey
| | - Selma Topaloglu Tuac
- Department of Neurology, Bakirkoy Psychiatry and Neurology Research and Training Hospital, Istanbul, Turkey
| | - Mesrure Koseoglu
- Department of Neurology, Bakirkoy Psychiatry and Neurology Research and Training Hospital, Istanbul, Turkey
| | - Ozcan Erel
- Department of Biochemistry, Medical Faculty, Yildirim Beyazit University, Ankara, Turkey
| | - Salim Neselioglu
- Department of Biochemistry, Medical Faculty, Yildirim Beyazit University, Ankara, Turkey
| | - Tomris Ozben
- Department of Biochemistry, Medical Faculty, Akdeniz University, Antalya, Turkey
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Koseoglu M, Ozben S, Gozubatik-Celik G, Tutuncu M, Kucuksayan E, Hanikoğlu A, Atakli D, Ozben T. Plasma copeptin levels in patients with multiple sclerosis. J Clin Neurosci 2020; 78:143-146. [DOI: 10.1016/j.jocn.2020.04.095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 04/15/2020] [Indexed: 01/24/2023]
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Abstract
Alzheimer's disease (AD) is a neurodegenerative disease characterized by progressive memory loss and dementia. The pathological characteristics of AD include the deposition of amyloid beta (Aβ), neurofibrillary tangles, and neuronal loss. There is evidence showing the involvement of inflammation in AD, including activated microglia within and surrounding senile plaques. Epidemiological studies suggest the use of anti-inflammatory drugs to reduce incidence of AD. However, clinical trials with anti-inflammatory drugs have not been successful.
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Affiliation(s)
- Tomris Ozben
- Department of Biochemistry, Medical Faculty, Akdeniz University, Antalya, Turkey.
| | - Serkan Ozben
- Department of Neurology, Antalya Training and Research Hospital, Antalya, Turkey
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Bellei E, Monari E, Ozben S, Koseoglu Bitnel M, Topaloglu Tuac S, Tomasi A, Bergamini S. Discovery of restless legs syndrome plasmatic biomarkers by proteomic analysis. Brain Behav 2018; 8:e01062. [PMID: 30244532 PMCID: PMC6192389 DOI: 10.1002/brb3.1062] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 06/12/2018] [Accepted: 06/13/2018] [Indexed: 01/08/2023] Open
Abstract
OBJECTIVES Restless legs syndrome (RLS) can lead to severe clinical consequences, thus negatively impacts on patients' overall health and quality of life. Nevertheless, the pathophysiology of RLS is still unclear, resulting in underestimate, incorrect, or ignored diagnosis and in limited management and treatment. The aim of this study was to compare the plasma proteome of RLS patients and healthy controls, in the search of diagnostic biomarkers related to the disease severity. MATERIALS AND METHODS Two-dimensional gel electrophoresis coupled with liquid chromatography-mass spectrometry was employed to analyze plasma samples of 34 patients with primary RLS, divided into two subgroups according to the disease severity: MMS group (mild-moderate symptoms) and HS group (severe and very severe symptoms), and 17 age- and sex-matched control subjects. Sleep quality, daytime sleepiness, and the level of depression were also evaluated. RESULTS We identified eight upregulated spots, corresponding to five unique proteins, in both RLS group vs. controls (alpha-1B-glycoprotein, alpha-1-acid glycoprotein 1, haptoglobin, complement C4-A, and immunoglobulin kappa constant); five increased spots, consistent with three unique proteins, only in HS-RLS (kininogen-1, immunoglobulin heavy constant alpha 1, and immunoglobulin lambda constant 2); one downregulated spot in both patient's groups (complement C3) and another one only in HS-RLS (alpha-1-antitrypsin). CONCLUSIONS The significantly different plasma proteins detected in RLS were mainly associated with inflammation, immune response, and cardiovascular disorders. Particularly, the gradual increasing in immunoglobulins could be indicative of the disease severity and evolution. Accordingly, these proteins may represent a valid set of useful biomarkers for RLS diagnosis, progression and treatment.
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Affiliation(s)
- Elisa Bellei
- Department of Diagnostic and Clinical Medicine and Public Health, Proteomic Lab, University of Modena and Reggio Emilia, Modena, Italy
| | - Emanuela Monari
- Department of Diagnostic and Clinical Medicine and Public Health, Proteomic Lab, University of Modena and Reggio Emilia, Modena, Italy
| | - Serkan Ozben
- Department of Neurology, Antalya Training and Research Hospital, Antalya, Turkey
| | - Mesrure Koseoglu Bitnel
- Department of Neurology, Bakirkoy Psychiatry and Neurology Research and Training Hospital, Istanbul, Turkey
| | - Selma Topaloglu Tuac
- Department of Neurology, Bakirkoy Psychiatry and Neurology Research and Training Hospital, Istanbul, Turkey
| | - Aldo Tomasi
- Department of Diagnostic and Clinical Medicine and Public Health, Proteomic Lab, University of Modena and Reggio Emilia, Modena, Italy
| | - Stefania Bergamini
- Department of Diagnostic and Clinical Medicine and Public Health, Proteomic Lab, University of Modena and Reggio Emilia, Modena, Italy
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Topaloglu Tuac S, Ozben S, Koseoglu Bitnel M, Koksal A, Kucuksayan E, Hanikoğlu A, Ozben T. Plasma copeptin levels in patients with restless legs syndrome. Acta Neurol Scand 2018; 137:316-320. [PMID: 29148047 DOI: 10.1111/ane.12866] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/27/2017] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Copeptin, the C-terminal fragment of antidiuretic hormone, is a new biomarker that has been found to be elevated in several disorders and could be related with prognosis. This study aimed to compare plasma copeptin levels in patients with restless legs syndrome (RLS) with healthy individuals and to investigate whether plasma copeptin levels were associated with the severity of disease. MATERIAL AND METHODS 41 patients with primary RLS, who were followed in Bakirkoy Psychiatry and Neurology Research and Training Hospital and 41 age- and sex-matched healthy individuals were included into the study. RLS patients were divided into subgroups as mild-moderate, severe, and very severe according to the severity of symptoms. Sleep quality and excessive daytime sleepiness were determined according to Pittsburgh Sleep Quality Index and Epworth Sleepiness Scale, respectively, and sleep quality scores were analyzed statistically among the groups divided according to disease severity. Copeptin levels in all the patients were compared to the controls. RLS subgroups were compared with each other to evaluate association between copeptin levels and disease severity. RESULTS Plasma copeptin levels in RLS patients were significantly higher than controls (P < .001). However, there was no association between copeptin levels and disease severity. Excessive daytime sleepiness was found as 14.63% and low sleep quality as 68.29% in patients. CONCLUSIONS Hypothalamic-pituitary-adrenal axis activation and sympathetic hyperactivity in RLS might be responsible for increased Antidiuretic hormone (ADH) and copeptin release. We think that copeptin might have a potential role in the pathogenesis of RLS and be a biomarker for this disease.
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Affiliation(s)
- S. Topaloglu Tuac
- Department of Neurology; Bakirkoy Psychiatry and Neurology Research and Training Hospital; Istanbul Turkey
| | - S. Ozben
- Department of Neurology; Antalya Training and Research Hospital; Antalya Turkey
| | - M. Koseoglu Bitnel
- Department of Neurology; Bakirkoy Psychiatry and Neurology Research and Training Hospital; Istanbul Turkey
| | - A. Koksal
- Department of Neurology; Bakirkoy Psychiatry and Neurology Research and Training Hospital; Istanbul Turkey
| | - E. Kucuksayan
- Department of Biochemistry; Medical Faculty; Akdeniz University; Antalya Turkey
| | - A. Hanikoğlu
- Department of Biochemistry; Medical Faculty; Akdeniz University; Antalya Turkey
| | - T. Ozben
- Department of Biochemistry; Medical Faculty; Akdeniz University; Antalya Turkey
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8
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Agra RM, Al-Daghri NM, Badimon L, Bodi V, Carbone F, Chen M, Cubedo J, Dullaart RPF, Eiras S, García-Monzón C, Gary T, Gnoni A, González-Rodríguez Á, Gremmel T, Hafner F, Hakala T, Huang B, Ickmans K, Irace C, Kholová I, Kimer N, Kytö V, März W, Miazgowski T, Møller S, Montecucco F, Niccoli G, Nijs J, Ozben S, Ozben T, Papassotiriou I, Papastamataki M, Reina-Couto M, Rios-Navarro C, Ritsch A, Sabico S, Seetho IW, Severino A, Sipilä J, Sousa T, Taszarek A, Taurino F, Tietge UJF, Tripolino C, Verloop W, Voskuil M, Wilding JPH. Research update for articles published in EJCI in 2014. Eur J Clin Invest 2016; 46:880-94. [PMID: 27571922 DOI: 10.1111/eci.12671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 08/26/2016] [Indexed: 02/05/2023]
Affiliation(s)
- Rosa María Agra
- Department of Cardiology and Coronary Unit, University Clinical Hospital of Santiago de Compostela, Santiago de Compostela, Spain.
| | - Nasser M Al-Daghri
- Biomarkers Research Program, Biochemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia.,Prince Mutaib Chair for Biomarkers of Osteoporosis, Biochemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Lina Badimon
- Cardiovascular Research Center (CSIC-ICCC), Barcelona, Spain.,Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain.,Cardiovascular Research Chair, UAB, Barcelona, Spain
| | - Vicente Bodi
- Cardiology Department, Hospital Clinico Universitario, INCLIVA, University of Valencia, Valencia, Spain
| | - Federico Carbone
- First Clinical of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Mao Chen
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Judit Cubedo
- Cardiovascular Research Center (CSIC-ICCC), Barcelona, Spain.,Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain
| | - Robin P F Dullaart
- Department of Endocrinology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Sonia Eiras
- Health Research Institute, University Clinical Hospital of Santiago de Compostela, Santiago de Compostela, Spain
| | - Carmelo García-Monzón
- Liver Research Unit, Santa Cristina University Hospital, Instituto de Investigación Sanitaria Princesa, CIBEREHD, Madrid, Spain
| | - Thomas Gary
- Division of Angiology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Antonio Gnoni
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari 'Aldo Moro', Bari, Italy
| | - Águeda González-Rodríguez
- Liver Research Unit, Santa Cristina University Hospital, Instituto de Investigación Sanitaria Princesa, CIBEREHD, Madrid, Spain
| | - Thomas Gremmel
- Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
| | - Franz Hafner
- Division of Angiology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Tommi Hakala
- Department of Surgery, Tampere University Hospital, Tampere, Finland
| | - Baotao Huang
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Kelly Ickmans
- Pain in Motion International Research Group, Vrije Universiteit Brussel, Brussels, Belgium.,Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education & Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium.,Department of Physical Medicine and Physiotherapy, University Hospital Brussels, Brussels, Belgium
| | - Concetta Irace
- Department of Clinical and Experimental Medicine, University Magna Graecia, Catanzaro, Italy
| | - Ivana Kholová
- Department of Pathology, Fimlab Laboratories, Tampere University Hospital, Tampere, Finland
| | - Nina Kimer
- Department of Clinical Physiology and Nuclear Medicine, Center for Functional and Diagnostic Imaging and Research, Faculty of Health Sciences, Hvidovre Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Ville Kytö
- Heart Center, Turku University Hospital, Turku, Finland.,Research Center of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, Finland
| | - Winfried März
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria.,Vth Department of Medicine, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.,Synlab Academy, Synlab Holding Deutschland GmbH, Mannheim, Augsburg, Germany
| | - Tomasz Miazgowski
- Department of Hypertension and Internal Medicine, Pomeranian Medical University, Szczecin, Poland
| | - Søren Møller
- Department of Clinical Physiology and Nuclear Medicine, Center for Functional and Diagnostic Imaging and Research, Faculty of Health Sciences, Hvidovre Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Fabrizio Montecucco
- First Clinical of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy.,IRCCS AOU San Martino-IST, Genoa, Italy.,Centre of Excellence for Biomedical Research (CEBR), University of Genoa, Genoa, Italy
| | | | - Jo Nijs
- Pain in Motion International Research Group, Vrije Universiteit Brussel, Brussels, Belgium.,Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education & Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium.,Department of Physical Medicine and Physiotherapy, University Hospital Brussels, Brussels, Belgium
| | - Serkan Ozben
- Department of Neurology, Antalya Training and Research Hospital, Antalya, Turkey
| | - Tomris Ozben
- Department of Medical Biochemistry, Medical Faculty, Akdeniz University, Antalya, Turkey
| | - Ioannis Papassotiriou
- Department of Clinical Biochemistry, 'Aghia Sophia' Children's Hospital, Athens, Greece
| | - Maria Papastamataki
- Department of Clinical Biochemistry, 'Aghia Sophia' Children's Hospital, Athens, Greece
| | - Marta Reina-Couto
- Departamento de Farmacologia e Terapêutica, Faculdade de Medicina da Universidade do Porto, Porto, Portugal.,MedInUP - Centro de Investigação Farmacológica e Inovação Medicamentosa, Universidade do Porto, Porto, Portugal.,Departamento de Medicina Intensiva, Centro Hospitalar São João, Porto, Portugal
| | - Cesar Rios-Navarro
- Cardiology Department, Hospital Clinico Universitario, INCLIVA, University of Valencia, Valencia, Spain
| | - Andreas Ritsch
- Department of Internal Medicine, Medical University of Innsbruck, Innsbruck, Austria
| | - Shaun Sabico
- Biomarkers Research Program, Biochemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia.,Prince Mutaib Chair for Biomarkers of Osteoporosis, Biochemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ian W Seetho
- Obesity and Endocrinology Research Group, University Hospital Aintree, University of Liverpool, Liverpool, UK
| | | | - Jussi Sipilä
- North Karelia Central Hospital, Joensuu, Finland.,Division of Clinical Neurosciences, Turku University Hospital, Turku, Finland.,Department of Neurology, University of Turku, Turku, Finland
| | - Teresa Sousa
- Departamento de Farmacologia e Terapêutica, Faculdade de Medicina da Universidade do Porto, Porto, Portugal.,MedInUP - Centro de Investigação Farmacológica e Inovação Medicamentosa, Universidade do Porto, Porto, Portugal
| | - Aleksandra Taszarek
- Department of Hypertension and Internal Medicine, Pomeranian Medical University, Szczecin, Poland
| | - Federica Taurino
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, Italy
| | - Uwe J F Tietge
- Department of Pediatrics, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Cesare Tripolino
- Department of Clinical and Experimental Medicine, University Magna Graecia, Catanzaro, Italy
| | - Willemien Verloop
- Department of Cardiology, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - Michiel Voskuil
- Department of Cardiology, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - John P H Wilding
- Obesity and Endocrinology Research Group, University Hospital Aintree, University of Liverpool, Liverpool, UK
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Ozben S, Huseyinoglu N, Hanikoglu F, Guvenc TS, Yildirim BZ, Cort A, Ozdem S, Ozben T. Advanced oxidation protein products and ischaemia-modified albumin in obstructive sleep apnea. Eur J Clin Invest 2014; 44:1045-52. [PMID: 25223839 DOI: 10.1111/eci.12338] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 09/07/2014] [Indexed: 01/04/2023]
Abstract
BACKGROUND Several studies have shown that obstructive sleep apnea increases incidence of cardiovascular morbidity and mortality. The high systemic oxidative stress in obstructive sleep apnea has been considered as a major pathogenic mechanism leading to cardiovascular disease. Oxidative stress-related lipid and DNA oxidation in obstructive sleep apnea have been reported in the previous studies. In contrast, there is limited and contradictory information regarding protein oxidation in obstructive sleep apnea patients such as ischaemia-modified albumin and advanced oxidation protein products. Therefore, we aimed to investigate plasma ischaemia-modified albumin and advanced oxidation protein products and their correlation with total oxidative status and total antioxidative capacity in the obstructive sleep apnea patients. METHODS Plasma ischaemia-modified albumin, advanced oxidation protein products, total oxidative status and total antioxidative capacity were measured in 25 healthy volunteers and 59 obstructive sleep apnea patients diagnosed with polysomnography. RESULTS Plasma total antioxidative capacity was significantly lower (P = 0·012) and total oxidative status was significantly higher (P < 0·001) in the patients compared to the controls demonstrating increased oxidative stress in the patients. Plasma advanced oxidation protein products were significantly higher in the patients than the controls (P = 0·024). Plasma ischaemia-modified albumin levels were not statistically different between the obstructive sleep apnea patients and controls (P = 0·74). CONCLUSIONS We conclude that high systemic oxidative stress in obstructive sleep apnea is reflected by increased advanced oxidation protein products without causing an increase in ischaemia-modified albumin.
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Affiliation(s)
- Serkan Ozben
- Department of Neurology, Bakirkoy Training and Research Hospital for Psychiatry, Neurology and Neurosurgery Diseases, Istanbul, Turkey
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10
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Hanikoglu F, Huseyinoglu N, Ozben S, Cort A, Ozdem S, Ozben T. Increased plasma soluble tumor necrosis factor receptor-1 and myeloperoxidase activity in patients with obstructive sleep apnea syndrome. Int J Neurosci 2014; 125:655-62. [DOI: 10.3109/00207454.2014.960521] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Huseyinoglu N, Ekinci M, Ozben S, Buyukuysal C. Relationship between Structural and Functional Assessment of the Visual System in Mildly Disabled Relapsing-Remitting Multiple Sclerosis Patients. Neuroophthalmology 2014; 38:1-7. [PMID: 27928266 DOI: 10.3109/01658107.2013.855242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Accepted: 10/01/2013] [Indexed: 01/21/2023] Open
Abstract
Studies that explored the anterior visual pathway in the patients with multiple sclerosis (MS) have demonstrated contradictory results about the correlation between structural and functional status of optic nerve and retina. We aimed to investigate the functional and structural findings in our cohort of mildly disabled relapsing-remitting MS patients. A total of 134 eyes (80 eyes of the patients with MS and 54 eyes of the control group) were investigated. Eyes of MS patients were divided into two groups-as eyes with history of optic neuritis (ON group) and without history of optic neuritis (NON group). Ophthalmological investigation including visual evoked potentials, standard automated perimetry, and optical coherence tomography were performed for all participants. Retinal and macular thicknesses were significantly decreased in ON and NON groups compared with controls. Also, visual evoked potential latencies and visual field loss were worse in the both MS groups compared with control group. We did not find any correlation between visual evoked potentials and retinal or macular thickness values but visual field parameters were correlated between retinal and macular layer loss in the NON group. According to our results and some previous studies, although both functional and structural changes were detected in patients with MS, functional status markers do not always show parallelism (or synchrony) with structural changes, especially in eyes with history of optic neuritis.
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Affiliation(s)
| | - Metin Ekinci
- Department of Ophthalmology, Kafkas University Medical Faculty Kars Turkey
| | - Serkan Ozben
- Department of Neurology, Kafkas University Medical Faculty Kars Turkey
| | - Cagatay Buyukuysal
- Department of Biostatistics, Bülent Ecevit University Medical Faculty Zonguldak Turkey
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12
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Hanoğlu L, Hakyemez HA, Özer F, Ozben S, Demirci S, Oguz Akarsu E. Erken evre Parkinson Hastalığında Olfaktör Disfonksiyon ve Epizodik Verbal Bellek arasındaki ilişki. Noro Psikiyatr Ars 2014. [DOI: 10.4274/npa.y7353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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13
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Affiliation(s)
- Serkan Ozben
- Department of Neurology, Medical Faculty, Kafkas University, Kars, Turkey
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14
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Hakyemez HA, Veyseller B, Ozer F, Ozben S, Bayraktar GI, Gurbuz D, Cetin S, Yildirim YS. Relationship of olfactory function with olfactory bulbus volume, disease duration and Unified Parkinson's disease rating scale scores in patients with early stage of idiopathic Parkinson's disease. J Clin Neurosci 2013; 20:1469-70. [PMID: 23870619 DOI: 10.1016/j.jocn.2012.11.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Revised: 11/05/2012] [Accepted: 11/06/2012] [Indexed: 10/26/2022]
Abstract
We aimed to investigate the relationship between olfactory function and olfactory bulbus (OB) volume, disease duration and Unified Parkinson's disease rating scale (UPDRS) scores in early stage idiopathic Parkinson's disease patients. The University of Pennsylvania Smell Identification Test (UPSIT) was used for the evaluation of olfactory function. UPSIT scores for patients with Parkinson's disease were significantly lower than controls. There was no significant difference between stage 1 and stage 2 patients. OB volumes were higher in stage 1 and 2 patients than controls, but there was no statistical difference between the three groups. No significant correlation was found between UPSIT and UPDRS total scores, nor between UPSIT scores and disease duration in stage 1 and 2 patients. According to our results, we propose UPSIT be used as a screening test to diagnose presymptomatic patients, but not OB volumes.
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Orman G, Ozben S, Huseyinoglu N, Duymus M, Orman KG. Ultrasound elastographic evaluation in the diagnosis of carpal tunnel syndrome: initial findings. Ultrasound Med Biol 2013; 39:1184-1189. [PMID: 23643060 DOI: 10.1016/j.ultrasmedbio.2013.02.016] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 02/19/2013] [Accepted: 02/21/2013] [Indexed: 06/02/2023]
Abstract
The purpose of this study was to investigate ultrasound (US)- and US elastography-detected changes in the median nerve of patients with carpal tunnel syndrome (CTS). Seventy-four wrists of 41 female patients with CTS (mean age, 47.73 ± 11.45 y) and 45 wrists of 24 asymptomatic female controls (mean age, 42.83 ± 10.66 y) were examined with US and US elastography. Electromyography results confirmed the diagnosis of CTS in the patients. The mean median nerve perimeter (MN-P = 15.26 ± 2.18 mm) and median nerve cross-sectional area (MN-CSA = 11.81 ± 4.05 mm²) of patients with CTS were higher than those of controls (12.08 ± 1.54 mm and 7.76 ± 1.40 mm², respectively) (p < 0.05). Mean tissue strain was lower in the patients with CTS (0.094 ± 0.045 than in the controls (0.145 ± 0.068) (p < 0.05). The most sensitive cut-off value for tissue strain was 0.0635, and the most specific was 0.19. US and US elastography, in addition to electromyography, proved to be beneficial in the diagnosis of CTS. US elastography is a new technique that may well find a place in the diagnosis of nerve entrapment syndromes.
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Affiliation(s)
- Gunes Orman
- Radiology Department, Faculty of Medicine, Kafkas University, Kars, Turkey.
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16
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Huseyinoglu N, Ozben S, Ekinci M, Buyukuysal C, Yıldırım M, Safak H, Huseyin H. Optical Coherence Tomography in Patients with Relapsing-Remitting Multiple Sclerosis without Optic Neuritis: A 20-Month Longitudinal Study. Neuroophthalmology 2013; 37:104-110. [PMID: 28163764 DOI: 10.3109/01658107.2013.792358] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Revised: 03/06/2013] [Accepted: 03/21/2013] [Indexed: 11/13/2022] Open
Abstract
Optical coherence tomography is supported and used as a technique for visualisation of neuro-axonal loss in multiple sclerosis, but there are also a few studies expressing the opposite view. The aim of our study was to investigate retinal nerve fibre layer and optic nerve head parameters in patients with multiple sclerosis without a history of prior optic neuritis and symptoms of a new clinical attack during the follow-up for a total of 20-month period. Full ophthalmic evaluation was performed for all of the participants. The baseline retinal nerve fibre layer and macular thicknesses and focal and global loss of macular volume values were significantly lower in the eyes of the patients with multiple sclerosis compared with the healthy controls. No significant change between baseline and follow-up scans were found in all optical coherence tomography parameters in the multiple sclerosis group. Statistical analyses revealed significant retinal nerve fibre layer and macular thickness differences between baseline and second measurements in the controls. No significant difference in percent change between baseline and second measurements was observed between the patient and control groups. We conclude that whereas healthy subjects have an age-related tendency toward a decrease in retinal nerve fibre layer thickness, patients with multiple sclerosis patients are likely to pass through different stages of retinal thinning and thickening due to subclinical optic neuritis and, as a result, we could not detect any statistically significant change between baseline and second measurements in our multiple sclerosis patients.
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Affiliation(s)
| | | | - Metin Ekinci
- Department of Ophthalmology Kafkas University Medical Faculty Kars, Turkey
| | - Cagatay Buyukuysal
- Department of Biostatistics Bülent Ecevit University Medical Faculty, Zonguldak Turkey
| | | | | | - Halil Huseyin
- Department of Ophthalmology Kafkas University Medical Faculty Kars, Turkey
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17
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Huseyinoglu N, Ekinci M, Ozben S, Buyukuysal C, Kale MY, Sanivar HS. Optic disc and retinal nerve fiber layer parameters as indicators of neurodegenerative brain changes in patients with obstructive sleep apnea syndrome. Sleep Breath 2013; 18:95-102. [PMID: 23636560 DOI: 10.1007/s11325-013-0854-z] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 04/05/2013] [Accepted: 04/18/2013] [Indexed: 12/24/2022]
Abstract
PURPOSE Retina is a unique part of the central nervous system (CNS) for visualizing the processes of axonal and neuronal degeneration. Optical coherence tomography (OCT) allows direct visualization and measurement of retinal nerve fiber layer (RNFL) thickness, macular volume, and optic disc (OD) parameters. One of the disorders associated with atrophy in different brain regions is obstructive sleep apnea syndrome (OSAS). In the present study, we aimed to determine OD and RNFL changes measured by OCT for investigating the progress of neurodegeneration development in OSAS, excluding all the other conditions that can directly affect RNFL thickness and optic nerve parameters. METHODS Both eyes of 101 patients with OSAS and 20 controls were investigated by OCT. Full-night polysomnography (PSG) and ophthalmologic examination including automated visual field (VF) examination and OCT were performed in all of the patients. RESULTS According to the OSAS grading, patients were grouped as mild (n=15), moderate (n=27), and severe (n=59). We found significant decrease in RNFL thickness only in the patients with severe OSAS compared with the other groups and decreased macular ganglion cell thickness in the severe OSAS group compared with the control group. VF parameters were significantly worsened in all the OSAS subgroups compared to the control group. We found different data such as normal or increased optic nerve parameters as result of subtle OD edema, which may mask possible peripapillar axonal loss. CONCLUSIONS We think that evaluation of neurodegeneration in OSAS is not always possible by examining OD and RNFL because there are difficulties due to the confounding issues of cerebral atrophy and OD edema.
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Affiliation(s)
- Nergiz Huseyinoglu
- Department of Neurology, Medical Faculty, Kafkas University, Kars, Turkey,
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18
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Ozben S, Guvenc TS, Huseyinoglu N, Sanivar HS, Hanikoglu F, Cort A, Ozben T. Low serum copeptin levels in patients with obstructive sleep apnea. Sleep Breath 2013; 17:1187-92. [PMID: 23407918 DOI: 10.1007/s11325-013-0822-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 01/22/2013] [Accepted: 01/31/2013] [Indexed: 12/27/2022]
Abstract
PURPOSE Copeptin, the C-terminal fragment of antidiuretic hormone (ADH), is a new biomarker that has been found to be elevated in several cardiovascular disorders and is related with prognosis. Patients with obstructive sleep apnea demonstrate a tendency to develop coronary and cerebral atherosclerotic disease. Our aim was to investigate copeptin levels in untreated new diagnosed obstructive sleep apnea patients without manifest cardiovascular disorders in order to determine whether copeptin could be used as a biomarker in this group. METHODS A total of 60 patients with obstructive sleep apnea, diagnosed with polysomnography, and 23 healthy volunteers were enrolled into this study. Blood samples were collected after overnight fasting, and copeptin level was measured with an enzyme immunoassay method. RESULTS Patients with obstructive sleep apnea had a higher incidence of hypertension and body mass index but lower serum copeptin level (0.48 ± 0.24. vs. 0.64 ± 0.28 ng/ml, p = 0.007) compared with the healthy controls. There was no significant difference regarding to serum copeptin levels between the moderate (n = 13) and severe (n = 47) obstructive sleep apnea patients (0.42 ± 0.18 vs. 0.49 ± 0.26 ng/ml, p = 0.409). CONCLUSIONS Rather than reflecting a reduced risk for cardiovascular disorders, we consider that reduced copeptin level is related with disturbed ADH secretion in obstructive sleep apnea patients. Therefore, it would not be advisable to measure copeptin levels in obstructive sleep apnea patients to determine cardiovascular risk, while this marker could be valuable to demonstrate impairment in ADH regulation in this patient group.
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Affiliation(s)
- Serkan Ozben
- Department of Neurology, Medical Faculty, Kafkas University, 36100, Kars, Turkey,
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Ozben S. Commentary. J Neurosci Rural Pract 2013; 4:398-9. [PMID: 24347945 PMCID: PMC3858757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Affiliation(s)
- Serkan Ozben
- Department of Neurology, Medical Faculty, Kafkas University, Kars, Turkey,Address for correspondence: Dr. Serkan Ozben, Department of Neurology, Medical Faculty, Kafkas University, Kars - 36100, Turkey. E-mail:
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Huseyinoglu N, Ozben S, Arhan E, Palanci Y, Gunes N. Prevalence and risk factors of epilepsy among school children in eastern Turkey. Pediatr Neurol 2012; 47:13-8. [PMID: 22704010 DOI: 10.1016/j.pediatrneurol.2012.04.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Accepted: 04/09/2012] [Indexed: 11/29/2022]
Abstract
Epilepsy is a serious chronic brain disorder of childhood. We performed a cross-sectional prevalence study, determined the prevalence of childhood epilepsy, and identified the significance of certain risk factors for epilepsy among 1625 primary-school students aged 6-14 years, living in the center of Kars province. A questionnaire was prepared according to the definitions and principles of the Commission on Epidemiology and Prognosis, International League Against Epilepsy. Twenty-two children were diagnosed as epileptic. The point prevalence of active epilepsy in males was 4.9/1000, and in females 12.4/1000, representing a total of 8.6/1000. The cumulative prevalence in males was 11.0/1000, and 16.1/1000 in females, representing a total of 13.5/1000. Febrile convulsions, family history of epilepsy, serious maternal illness during pregnancy, a history of head trauma, antenatal/postnatal problems, and a history of neonatal jaundice were statistically significantly related to the development of epilepsy.
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Affiliation(s)
- Nergiz Huseyinoglu
- Department of Neurology, Medical Faculty, Kafkas University, Kars, Turkey.
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Ozben S, Oguz E, Ozer F, Genc F. Bilateral ballism in a patient with diabetes mellitus and chronic renal failure. J Clin Neurosci 2011; 18:731-2. [DOI: 10.1016/j.jocn.2010.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2009] [Revised: 10/11/2010] [Accepted: 11/08/2010] [Indexed: 10/18/2022]
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Abstract
We report an uncommon case of 53-year-old female patient with partial seizure induced by forced voluntary eye closure due to non-ketotic hyperglycemia. The initial laboratory tests showed an elevated blood glucose level of 550 mg/dL but no evidence of ketosis. Brain magnetic resonance imaging was normal. When the blood glucose levels decreased slowly to about 150 mg/dL in five days, the seizures ended completely. No anticonvulsants were used. Since seizures are generally refractory to antiepileptic medication, control of blood glucose is essential.
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Affiliation(s)
- Raziye Tiras
- Department of Neurology, Haseki Educational and Research Hospital, Istanbul, Turkey
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Erol C, Ozben S, Ozer F, Cetin S, Tiras R. Bilateral ballism induced by gabapentin in idiopatic Parkinson's disease. Clin Neurol Neurosurg 2009; 111:397. [DOI: 10.1016/j.clineuro.2008.11.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2008] [Revised: 11/18/2008] [Accepted: 11/22/2008] [Indexed: 11/25/2022]
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Ozer F, Tiras R, Cetin S, Ozturk O, Aydemir T, Ozben S, Meral H, Kizkin S, Bader H, Ozben B. Valvular heart disease in patients with Parkinson’s disease treated with pergolide, levodopa or both. J Clin Neurosci 2009; 16:83-7. [DOI: 10.1016/j.jocn.2008.02.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2007] [Revised: 01/19/2008] [Accepted: 02/02/2008] [Indexed: 11/25/2022]
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Meral H, Aydemir T, Ozer F, Ozturk O, Ozben S, Erol C, Cetin S, Hanoglu L, Ozkayran T, Yilsen M. Relationship between visual hallucinations and REM sleep behavior disorder in patients with Parkinson's disease. Clin Neurol Neurosurg 2008; 109:862-7. [PMID: 17913346 DOI: 10.1016/j.clineuro.2007.08.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2007] [Revised: 08/15/2007] [Accepted: 08/21/2007] [Indexed: 10/22/2022]
Abstract
OBJECTIVES REM sleep behavior disorder (RBD) has been documented to precede or to co-occur with Parkinson's disease (PD). Parkinson's disease is one of the most common neurological conditions associated with visual hallucinations. Cognitive dysfunction is present in PD, even at the early stages of these diseases. In this study we aimed to investigate the relationship between visual hallucinations and RBD in patients with idiopathic Parkinson's disease (IPD). Additionally, we evaluated the association of the cognition and the pattern of cognitive impairment with VHs and RBD, effects of factors like duration and severity of the disease and duration of levodopa usage. PATIENTS AND METHODS Seventy-nine patients, diagnosed as PD, were included the study and then, patients were divided into four groups; with RBD and VHs (group 1), with RBD but no VHs (group 2), with VHs but no RBD (group 3), without RBD and VHs (group 4). We compared each group with the others according to demographic characteristics and neuropsychological test scores. RESULTS Of all patients, in 46% (n=36) RBD and in 48% (n=38) VHs were observed. Our study established VHs in 58% of patients with RBD, and RBD in 55% of patients with VHs. However, due to a 40% incidence of VHs in patients without RBD, RBD and VHs were not found to be correlated. All of the neuropsychometric test scores did not reveal significant difference between groups. CONCLUSION Although it seems like there is a small association between RBD and VHs in our patients, it was not significant. Group 1 presented with significantly worse scores in UPDRS total scores and I, II subscores.
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Affiliation(s)
- Hasan Meral
- Department of Neurology, Haseki Educational and Research Hospital, Turkey
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