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Vanhamme L, Zouaoui Boudjeltia K, Van Antwerpen P, Delporte C. The other myeloperoxidase: Emerging functions. Arch Biochem Biophys 2018; 649:1-14. [PMID: 29614255 DOI: 10.1016/j.abb.2018.03.037] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 03/07/2018] [Accepted: 03/30/2018] [Indexed: 12/20/2022]
Abstract
Myeloperoxidase (MPO) is a member of the mammalian peroxidase family. It is mainly expressed in neutrophils, monocytes and macrophages. As a catalyzer of reactive oxidative species and radical species formation, it contributes to neutrophil bactericidal activity. Nevertheless MPO invalidation does not seem to have major health consequences in affected individuals. This suggests that MPO might have alternative functions supporting its conservation during evolution. We will review the available data supporting these non-canonical functions in terms of tissue specific expression, function and enzymatic activity. Thus, we discuss its cell type specific expression. We review in between others its roles in angiogenesis, endothelial (dys-) function, immune reaction, and inflammation. We summarize its pathological actions in clinical conditions such as cardiovascular disease and cancer.
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Affiliation(s)
- Luc Vanhamme
- Laboratory of Molecular Biology of Inflammation, IBMM, Faculty of Sciences, Université Libre de Bruxelles, Gosselies, Belgium; Laboratory of Experimental Medicine (ULB 222 Unit), CHU de Charleroi, A. Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul, Belgium.
| | - Karim Zouaoui Boudjeltia
- Laboratory of Experimental Medicine (ULB 222 Unit), CHU de Charleroi, A. Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul, Belgium
| | - Pierre Van Antwerpen
- Pharmacognosy, Bioanalysis and Drug Discovery Unit, RD3, and Analytical Platform of the Faculty of Pharmacy, Faculty of Pharmacy, Université Libre de Bruxelles, Brussels, Belgium
| | - Cédric Delporte
- Pharmacognosy, Bioanalysis and Drug Discovery Unit, RD3, and Analytical Platform of the Faculty of Pharmacy, Faculty of Pharmacy, Université Libre de Bruxelles, Brussels, Belgium.
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Habartová L, Bunganič B, Tatarkovič M, Zavoral M, Vondroušová J, Syslová K, Setnička V. Chiroptical spectroscopy and metabolomics for blood-based sensing of pancreatic cancer. Chirality 2018; 30:581-591. [DOI: 10.1002/chir.22834] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 01/23/2018] [Indexed: 12/16/2022]
Affiliation(s)
- Lucie Habartová
- Department of Analytical Chemistry; University of Chemistry and Technology Prague; Prague 6 Czech Republic
| | - Bohuš Bunganič
- Department of Internal Medicine, First Faculty of Medicine, Military University Hospital; Charles University; Prague 6 Czech Republic
| | - Michal Tatarkovič
- Department of Analytical Chemistry; University of Chemistry and Technology Prague; Prague 6 Czech Republic
| | - Miroslav Zavoral
- Department of Internal Medicine, First Faculty of Medicine, Military University Hospital; Charles University; Prague 6 Czech Republic
| | - Jana Vondroušová
- Department of Organic Technology; University of Chemistry and Technology Prague; Prague 6 Czech Republic
| | - Kamila Syslová
- Department of Organic Technology; University of Chemistry and Technology Prague; Prague 6 Czech Republic
| | - Vladimír Setnička
- Department of Analytical Chemistry; University of Chemistry and Technology Prague; Prague 6 Czech Republic
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Downey LA, Simpson T, Timmer J, Nolidin K, Croft K, Wesnes KA, Scholey A, Deleuil S, Stough C. Impaired verbal episodic memory in healthy older adults is marked by increased F 2-Isoprostanes. Prostaglandins Leukot Essent Fatty Acids 2018; 129:32-37. [PMID: 29482768 DOI: 10.1016/j.plefa.2018.02.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 01/21/2018] [Accepted: 02/01/2018] [Indexed: 12/21/2022]
Abstract
Age-associated cognitive decline amongst otherwise healthy older individuals is a multifaceted characteristic of ageing. The role of oxidative stress biomarkers has been increasingly examined in the context of pathological aging conditions that affect cognition. Plasma F2-Isoprostane levels are a reliable index of systemic oxidative stress (specifically lipid peroxidation) and are elevated in dementia patients. Less is known about their role in healthy cognitive ageing. This study evaluated the relationship between F2-Isoprostanes and cognitive functioning in a cohort of 211 healthy elderly adults (60-75 years: Male; 88, Female; 123). Cognitive assessment included the Cognitive Drug Research (CDR) computerised assessment battery, which produces five validated factor scores (corresponding to 'Quality of Episodic Memory', 'Speed of Memory', Quality of Working Memory', Power of Attention' and 'Continuity of Attention'). Participants with higher F2-Isoprostane levels had significantly lower Quality of Episodic Memory scores (suggesting inferior abilities in retaining and retrieving verbal information in episodic memory). This is, to our knowledge, the first report of compromised verbal episodic memory in healthy ageing humans being linked to increased levels of F2-Isoprostanes. These results have relevance for interventions aimed at improving cognitive performance in the healthy elderly.
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Affiliation(s)
- Luke A Downey
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, Australia; Institute for Breathing and Sleep, Austin Hospital, Melbourne, Australia.
| | - Tamara Simpson
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, Australia
| | - Jorinde Timmer
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, Australia
| | - Karen Nolidin
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, Australia
| | - Kevin Croft
- School of Medicine and Pharmacology Royal Perth Hospital Unit, The University of Western Australia, Australia
| | - Keith A Wesnes
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, Australia; Wesnes Cognition Ltd, Streatley on Thames, UK; Medical School, University of Exeter, UK
| | - Andrew Scholey
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, Australia
| | - Saurenne Deleuil
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, Australia
| | - Con Stough
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, Australia.
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Paper-Based Sensing Device for Electrochemical Detection of Oxidative Stress Biomarker 8-Hydroxy-2'-deoxyguanosine (8-OHdG) in Point-of-Care. Sci Rep 2017; 7:14558. [PMID: 29109407 PMCID: PMC5673927 DOI: 10.1038/s41598-017-14878-9] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 09/13/2017] [Indexed: 11/16/2022] Open
Abstract
This work presents a cost-effective, label-free in point-of-care (POC) biosensor for the sensitive detection of 8-hydroxy-2′-deoxyguanosine (8-OHdG), the most abundant oxidative product of DNA, that may allow a premature assessment of cancer disease, thereby improving diagnosis, prognostics and survival rates. The device targets the direct detection of 8-OHdG by using for the first time a carbon-ink 3-electrode on a paper substrate coupled to Differential Pulse Voltammetry readings. This design was optimized by adding nanostructured carbon materials to the ink and the conducting polymer PEDOT, enhancing the electrocatalytic properties of the sensor towards 8-OHdG detection. Meanwhile, the ability of this oxidative stress biomarker to undertake an oxidation reaction enabled the development of the sensing electrochemical device without the need of chemical probes and long incubation periods. This paper-modified sensor presented high electrochemical performance on the oxidation of 8-OHdG with a wide linear range (50–1000 ng/ml) and a low detection limit (14.4 ng/ml). Thus, our results showed the development of a direct and facile sensor with good reproducibility, stability, sensitivity and more importantly, selectivity. The proposed carbon-based electrochemical sensor is a potential candidate to be miniaturized to small portable size, which make it applicable for in-situ 8-OHdG sensing in real biological samples.
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Nagata C, Tamura T, Wada K, Konishi K, Goto Y, Nagao Y, Ishihara K, Yamamoto S. Sleep duration, nightshift work, and the timing of meals and urinary levels of 8-isoprostane and 6-sulfatoxymelatonin in Japanese women. Chronobiol Int 2017; 34:1187-1196. [PMID: 28933565 DOI: 10.1080/07420528.2017.1355313] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
It has been hypothesized that disruption of circadian rhythms affects human health. Shift work and sleep deprivation are thought to disrupt the normal light-dark cycle, although the disruption due to shiftwork may be dependent on sleep deprivation. Both conditions have been suggested to be associated with an increased risk of cardiometabolic disorders. Non-photic environmental factors, such as the timing of eating, are also thought to regulate circadian rhythm and thus, may have effects on health, but the evidence from human studies is scarce. Oxidative stress is a risk factor of cardiometabolic disorders. Some laboratory studies suggest an involvement of circadian clock genes in the regulation of the redox system. The present study aimed to examine the association of sleeping habits, nightshift work, and the timing of meals with urinary levels of 8-isoprostane, a marker of oxidative stress, and 6-sulfatoxymelatonin, the principal metabolite of melatonin. Study subjects were 542 women who had previously attended a breast cancer mass screening in a community in Japan. Information on bedtimes and wake-up times, history of nightshift work, and the timing of meals was obtained by a self-administered questionnaire. The 8-isoprostane and 6-sulfatoxymelatonin were measured using the first morning void of urine and expressed per mg of creatinine. The geometric mean of 8-isoprostane levels was 12.1% higher in women with ≤6 hours of sleep than that in those with >8 hours of sleep on weekdays, and longer sleep duration on weekdays was significantly associated with lower urinary levels of 8-isoprostane after controlling for covariates (p for trend = 0.04). Women who were currently working the nightshift had a 33.3% higher geometric mean of 8-isoprostane levels than those who were not working nightshift (p = 0.03). Urinary 6-sulfatoxymelatonin levels were unrelated to sleep habits or nightshift work. Women who ate breakfast at irregular times had a 19.8% higher geometric mean of 8-isoprostane levels than those who ate breakfast at a regular time or who did not eat (p = 0.02). Women who ate nighttime snacks at irregular times had a 16.2% higher geometric mean of 8-isoprostane levels than those who did not eat nighttime snacks or who ate nighttime snacks at a regular time (p = 0.003). Among women who ate dinner at a regular time, earlier times for dinner were associated with higher 8-isoprostane and 6-sulfatoxymelatonin levels (p values for trends were 0.01 and 0.02, respectively). However, the times of dinner and nighttime snack are overlapping, and the time of last meal of the day was not associated with 8-isoprostane and 6-sulfatoxymelatonin levels. The time of breakfast or lunch was not associated with these biomarkers among women who ate the meal at regular times. Disturbing the rhythmicity of daily life may be associated with oxidative stress.
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Affiliation(s)
- Chisato Nagata
- a Department of Epidemiology and Preventive Medicine , Gifu University Graduate School of Medicine , Gifu , Japan and
| | - Takashi Tamura
- a Department of Epidemiology and Preventive Medicine , Gifu University Graduate School of Medicine , Gifu , Japan and
| | - Keiko Wada
- a Department of Epidemiology and Preventive Medicine , Gifu University Graduate School of Medicine , Gifu , Japan and
| | - Kie Konishi
- a Department of Epidemiology and Preventive Medicine , Gifu University Graduate School of Medicine , Gifu , Japan and
| | - Yuko Goto
- a Department of Epidemiology and Preventive Medicine , Gifu University Graduate School of Medicine , Gifu , Japan and
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Lean SC, Heazell AEP, Dilworth MR, Mills TA, Jones RL. Placental Dysfunction Underlies Increased Risk of Fetal Growth Restriction and Stillbirth in Advanced Maternal Age Women. Sci Rep 2017; 7:9677. [PMID: 28852057 PMCID: PMC5574918 DOI: 10.1038/s41598-017-09814-w] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 07/31/2017] [Indexed: 12/20/2022] Open
Abstract
Pregnancies in women of advanced maternal age (AMA) are susceptible to fetal growth restriction (FGR) and stillbirth. We hypothesised that maternal ageing is associated with utero-placental dysfunction, predisposing to adverse fetal outcomes. Women of AMA (≥35 years) and young controls (20-30 years) with uncomplicated pregnancies were studied. Placentas from AMA women exhibited increased syncytial nuclear aggregates and decreased proliferation, and had increased amino acid transporter activity. Chorionic plate and myometrial artery relaxation was increased compared to controls. AMA was associated with lower maternal serum PAPP-A and sFlt and a higher PlGF:sFlt ratio. AMA mice (38-41 weeks) at E17.5 had fewer pups, more late fetal deaths, reduced fetal weight, increased placental weight and reduced fetal:placental weight ratio compared to 8-12 week controls. Maternofetal clearance of 14C-MeAIB and 3H-taurine was reduced and uterine arteries showed increased relaxation. These studies identify reduced placental efficiency and altered placental function with AMA in women, with evidence of placental adaptations in normal pregnancies. The AMA mouse model complements the human studies, demonstrating high rates of adverse fetal outcomes and commonalities in placental phenotype. These findings highlight placental dysfunction as a potential mechanism for susceptibility to FGR and stillbirth with AMA.
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Affiliation(s)
- Samantha C Lean
- Maternal and Fetal Health Research Centre, Division of Developmental Biology and Medicine, University of Manchester, Manchester, United Kingdom.
| | - Alexander E P Heazell
- Maternal and Fetal Health Research Centre, Division of Developmental Biology and Medicine, University of Manchester, Manchester, United Kingdom
- St. Mary's Hospital, Manchester Academic Health Science Centre, Central Manchester University Hospitals, NHS Foundation Trust, Manchester, United Kingdom
| | - Mark R Dilworth
- Maternal and Fetal Health Research Centre, Division of Developmental Biology and Medicine, University of Manchester, Manchester, United Kingdom
- St. Mary's Hospital, Manchester Academic Health Science Centre, Central Manchester University Hospitals, NHS Foundation Trust, Manchester, United Kingdom
| | - Tracey A Mills
- Maternal and Fetal Health Research Centre, Division of Developmental Biology and Medicine, University of Manchester, Manchester, United Kingdom
- St. Mary's Hospital, Manchester Academic Health Science Centre, Central Manchester University Hospitals, NHS Foundation Trust, Manchester, United Kingdom
| | - Rebecca L Jones
- Maternal and Fetal Health Research Centre, Division of Developmental Biology and Medicine, University of Manchester, Manchester, United Kingdom
- St. Mary's Hospital, Manchester Academic Health Science Centre, Central Manchester University Hospitals, NHS Foundation Trust, Manchester, United Kingdom
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Brazão V, Santello FH, Colato RP, Mazotti TT, Tazinafo LF, Toldo MPA, do Vale GT, Tirapelli CR, do Prado JC. Melatonin: Antioxidant and modulatory properties in age-related changes during Trypanosoma cruzi infection. J Pineal Res 2017; 63. [PMID: 28370218 DOI: 10.1111/jpi.12409] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 03/24/2017] [Indexed: 01/02/2023]
Abstract
The purpose of this study was to investigate the effects of melatonin on selected biomarkers of innate and humoral immune response as well as the antioxidant/oxidant status (superoxide dismutase-SOD and reduced glutathione levels (GSH) to understand whether age-related changes would influence the development of acute Trypanosoma cruzi (T. cruzi) infection. Young- (5 weeks) and middle-aged (18 months) Wistar rats were orally treated with melatonin (gavage) (05 mg/kg/day), 9 days after infection. A significant increase in both SOD activity and GSH levels was found in plasma from all middle-aged melatonin-treated animals. Melatonin triggered enhanced expression of major histocompatibility class II (MHC-II) antigens on antigen-presenting cell (APC) and peritoneal macrophages in all treated animals. High levels of CD4+ CD28-negative T cells (*P<.05) were detected in middle-aged control animals. Melatonin induced a significant reduction (***P<.001) in CD28-negative in CD4+ and CD8+ T cells in middle-aged control animals. Contrarily, the same group displayed upregulated CD4+ CD28+ T and CD8+ CD28+ T cells. Melatonin also triggered an upregulation of CD80 and CD86 expression in all young-treated groups. Significant percentages of B and spleen dendritic cells in middle-aged infected and treated animals were observed. Our data reveal new features of melatonin action in inhibiting membrane lipid peroxidation, through the reduction in 8-isoprostane, upregulating the antioxidant defenses and triggering an effective balance in the antioxidant/oxidant status during acute infection. The ability of melatonin to counteract the immune alterations induced by aging added further support to its use as a potential therapeutic target not only for T. cruzi infection but also for other immunocompromised states.
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Affiliation(s)
- Vânia Brazão
- College of Pharmaceutical Sciences of Ribeirão Preto (FCFRP), University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Fabricia H Santello
- College of Pharmaceutical Sciences of Ribeirão Preto (FCFRP), University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Rafaela P Colato
- College of Pharmaceutical Sciences of Ribeirão Preto (FCFRP), University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Tamires T Mazotti
- College of Pharmaceutical Sciences of Ribeirão Preto (FCFRP), University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Lucas F Tazinafo
- College of Pharmaceutical Sciences of Ribeirão Preto (FCFRP), University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Míriam Paula A Toldo
- College of Pharmaceutical Sciences of Ribeirão Preto (FCFRP), University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Gabriel T do Vale
- Department of Psychiatric Nursing and Human Sciences, Laboratory of Pharmacology, College of Nursing of Ribeirão Preto, USP, Ribeirão Preto, SP, Brazil
| | - Carlos R Tirapelli
- Department of Psychiatric Nursing and Human Sciences, Laboratory of Pharmacology, College of Nursing of Ribeirão Preto, USP, Ribeirão Preto, SP, Brazil
| | - José C do Prado
- College of Pharmaceutical Sciences of Ribeirão Preto (FCFRP), University of São Paulo, Ribeirão Preto, SP, Brazil
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Abstract
Individuals of the same age may not age at the same rate. Quantitative biomarkers of aging are valuable tools to measure physiological age, assess the extent of ‘healthy aging’, and potentially predict health span and life span for an individual. Given the complex nature of the aging process, the biomarkers of aging are multilayered and multifaceted. Here, we review the phenotypic and molecular biomarkers of aging. Identifying and using biomarkers of aging to improve human health, prevent age-associated diseases, and extend healthy life span are now facilitated by the fast-growing capacity of multilevel cross-sectional and longitudinal data acquisition, storage, and analysis, particularly for data related to general human populations. Combined with artificial intelligence and machine learning techniques, reliable panels of biomarkers of aging will have tremendous potential to improve human health in aging societies.
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Affiliation(s)
- Xian Xia
- Key Laboratory of Computational Biology, CAS Center for Excellence in Molecular Cell Science, Collaborative Innovation Center for Genetics and Developmental Biology, Chinese Academy of Sciences-Max Planck Partner Institute for Computational Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Weiyang Chen
- School of Information, Qilu University of Technology, Jinan, China
| | - Joseph McDermott
- Key Laboratory of Computational Biology, CAS Center for Excellence in Molecular Cell Science, Collaborative Innovation Center for Genetics and Developmental Biology, Chinese Academy of Sciences-Max Planck Partner Institute for Computational Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Jing-Dong Jackie Han
- Key Laboratory of Computational Biology, CAS Center for Excellence in Molecular Cell Science, Collaborative Innovation Center for Genetics and Developmental Biology, Chinese Academy of Sciences-Max Planck Partner Institute for Computational Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
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Mobarak H, Fathi E, Farahzadi R, Zarghami N, Javanmardi S. L-carnitine significantly decreased aging of rat adipose tissue-derived mesenchymal stem cells. Vet Res Commun 2016; 41:41-47. [DOI: 10.1007/s11259-016-9670-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Accepted: 11/28/2016] [Indexed: 12/17/2022]
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Pelclova D, Zdimal V, Kacer P, Zikova N, Komarc M, Fenclova Z, Vlckova S, Schwarz J, Makeš O, Syslova K, Navratil T, Turci F, Corazzari I, Zakharov S, Bello D. Markers of lipid oxidative damage in the exhaled breath condensate of nano TiO 2 production workers. Nanotoxicology 2016; 11:52-63. [PMID: 27855548 DOI: 10.1080/17435390.2016.1262921] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Nanoscale titanium dioxide (nanoTiO2) is a commercially important nanomaterial. Animal studies have documented lung injury and inflammation, oxidative stress, cytotoxicity and genotoxicity. Yet, human health data are scarce and quantitative risk assessments and biomonitoring of exposure are lacking. NanoTiO2 is classified by IARC as a group 2B, possible human carcinogen. In our earlier studies we documented an increase in markers of inflammation, as well as DNA and protein oxidative damage, in exhaled breath condensate (EBC) of workers exposed nanoTiO2. This study focuses on biomarkers of lipid oxidation. Several established lipid oxidative markers (malondialdehyde, 4-hydroxy-trans-hexenal, 4-hydroxy-trans-nonenal, 8-isoProstaglandin F2α and aldehydes C6-C12) were studied in EBC and urine of 34 workers and 45 comparable controls. The median particle number concentration in the production line ranged from 1.98 × 104 to 2.32 × 104 particles/cm3 with ∼80% of the particles <100 nm in diameter. Mass concentration varied between 0.40 and 0.65 mg/m3. All 11 markers of lipid oxidation were elevated in production workers relative to the controls (p < 0.001). A significant dose-dependent association was found between exposure to TiO2 and markers of lipid oxidation in the EBC. These markers were not elevated in the urine samples. Lipid oxidation in the EBC of workers exposed to (nano)TiO2 complements our earlier findings on DNA and protein damage. These results are consistent with the oxidative stress hypothesis and suggest lung injury at the molecular level. Further studies should focus on clinical markers of potential disease progression. EBC has reemerged as a sensitive technique for noninvasive monitoring of workers exposed to engineered nanoparticles.
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Affiliation(s)
- Daniela Pelclova
- a Department of Occupational Medicine , First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague , Prague , Czech Republic
| | - Vladimir Zdimal
- b Institute of Chemical Process Fundamentals of the CAS , Prague , Czech Republic
| | - Petr Kacer
- c Institute of Chemical Technology Prague , Prague , Czech Republic
| | - Nadezda Zikova
- b Institute of Chemical Process Fundamentals of the CAS , Prague , Czech Republic
| | - Martin Komarc
- d Department of Methodology , Faculty of Physical Education and Sport, Charles University in Prague , Prague , Czech Republic.,e First Faculty of Medicine, Institute of Informatics, Charles University in Prague and General University Hospital in Prague , Prague , Czech Republic
| | - Zdenka Fenclova
- a Department of Occupational Medicine , First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague , Prague , Czech Republic
| | - Stepanka Vlckova
- a Department of Occupational Medicine , First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague , Prague , Czech Republic
| | - Jaroslav Schwarz
- b Institute of Chemical Process Fundamentals of the CAS , Prague , Czech Republic
| | - Otakar Makeš
- b Institute of Chemical Process Fundamentals of the CAS , Prague , Czech Republic
| | - Kamila Syslova
- c Institute of Chemical Technology Prague , Prague , Czech Republic
| | - Tomas Navratil
- f J. Heyrovský Institute of Physical Chemistry of the CAS , Prague , Czech Republic
| | - Francesco Turci
- g Department of Chemistry , "G. Scansetti" Interdepartmental Centre, and NIS Interdepartmental Centre, University of Torino , Torino , Italy
| | - Ingrid Corazzari
- g Department of Chemistry , "G. Scansetti" Interdepartmental Centre, and NIS Interdepartmental Centre, University of Torino , Torino , Italy
| | - Sergey Zakharov
- a Department of Occupational Medicine , First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague , Prague , Czech Republic
| | - Dhimiter Bello
- h UMass Lowell, Department of Public Health , College of Health Sciences , Lowell, MA , USA
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Blažek R, Polačik M, Kačer P, Cellerino A, Řežucha R, Methling C, Tomášek O, Syslová K, Terzibasi Tozzini E, Albrecht T, Vrtílek M, Reichard M. Repeated intraspecific divergence in life span and aging of African annual fishes along an aridity gradient. Evolution 2016; 71:386-402. [PMID: 27859247 DOI: 10.1111/evo.13127] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 11/07/2016] [Accepted: 11/09/2016] [Indexed: 01/22/2023]
Abstract
Life span and aging are substantially modified by natural selection. Across species, higher extrinsic (environmentally related) mortality (and hence shorter life expectancy) selects for the evolution of more rapid aging. However, among populations within species, high extrinsic mortality can lead to extended life span and slower aging as a consequence of condition-dependent survival. Using within-species contrasts of eight natural populations of Nothobranchius fishes in common garden experiments, we demonstrate that populations originating from dry regions (with short life expectancy) had shorter intrinsic life spans and a greater increase in mortality with age, more pronounced cellular and physiological deterioration (oxidative damage, tumor load), and a faster decline in fertility than populations from wetter regions. This parallel intraspecific divergence in life span and aging was not associated with divergence in early life history (rapid growth, maturation) or pace-of-life syndrome (high metabolic rates, active behavior). Variability across four study species suggests that a combination of different aging and life-history traits conformed with or contradicted the predictions for each species. These findings demonstrate that variation in life span and functional decline among natural populations are linked, genetically underpinned, and can evolve relatively rapidly.
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Affiliation(s)
- Radim Blažek
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Květná 8, 603 65, Brno, Czech Republic
| | - Matej Polačik
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Květná 8, 603 65, Brno, Czech Republic
| | - Petr Kačer
- Laboratory of Medicinal Diagnostics, Department of Organic Technology, University of Chemistry and Technology, Technická 5, 166 28, Prague, Czech Republic
| | - Alessandro Cellerino
- Bio@SNS, Scuola Normale Superiore, Department of Neurosciences, Piazza dei Cavalieri 7, 56126, Pisa, Italy.,Fritz Lipmann Institute for Age Research, Leibniz Institute, Beutenbergstr. 11, D-07745, Jena, Germany
| | - Radomil Řežucha
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Květná 8, 603 65, Brno, Czech Republic
| | - Caroline Methling
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Květná 8, 603 65, Brno, Czech Republic
| | - Oldřich Tomášek
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Květná 8, 603 65, Brno, Czech Republic.,Department of Zoology, Faculty of Sciences, Charles University in Prague, Viničná 7, 128 44, Praha, Czech Republic
| | - Kamila Syslová
- Laboratory of Medicinal Diagnostics, Department of Organic Technology, University of Chemistry and Technology, Technická 5, 166 28, Prague, Czech Republic
| | - Eva Terzibasi Tozzini
- Bio@SNS, Scuola Normale Superiore, Department of Neurosciences, Piazza dei Cavalieri 7, 56126, Pisa, Italy
| | - Tomáš Albrecht
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Květná 8, 603 65, Brno, Czech Republic.,Department of Zoology, Faculty of Sciences, Charles University in Prague, Viničná 7, 128 44, Praha, Czech Republic
| | - Milan Vrtílek
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Květná 8, 603 65, Brno, Czech Republic
| | - Martin Reichard
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Květná 8, 603 65, Brno, Czech Republic
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Gao L, Duan DD, Zhang JQ, Zhou YZ, Qin XM, Du GH. A Bioinformatic Approach for the Discovery of Antiaging Effects of Baicalein from Scutellaria baicalensis Georgi. Rejuvenation Res 2016; 19:414-422. [DOI: 10.1089/rej.2015.1760] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Affiliation(s)
- Li Gao
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, P.R. China
| | - Dan-dan Duan
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, P.R. China
- College of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, P.R. China
| | - Jian-qin Zhang
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, P.R. China
| | - Yu-zhi Zhou
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, P.R. China
| | - Xue-mei Qin
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, P.R. China
| | - Guan-hua Du
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, P.R. China
- Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
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Sweazea KL, Johnston CS, Knurick J, Bliss CD. Plant-Based Nutraceutical Increases Plasma Catalase Activity in Healthy Participants: A Small Double-Blind, Randomized, Placebo-Controlled, Proof of Concept Trial. J Diet Suppl 2016; 14:200-213. [PMID: 27715348 DOI: 10.1080/19390211.2016.1207742] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Oxidative stress resulting from dietary, lifestyle and environmental factors is strongly associated with tissue damage and aging. It occurs when there is either an overproduction of reactive oxygen species (i.e., oxidants) or decreased bioavailability of antioxidants that can scavenge them. The objective of this 12-week double-blind placebo-controlled study was to assess the efficacy of a nutraceutical at augmenting antioxidant status. Healthy adults (25-45 y) were randomized to either a treatment group (Product B, n = 23) or a placebo group (control, n = 20). No significant effect of Product B was observed for anthropometric variables or markers of glucose and lipid regulation. Biomarkers of oxidative stress were likewise not altered following the 12-week intervention. Plasma catalase concentrations were significantly elevated following 12 weeks of Product B as compared to the control group (+6.1 vs. -10.3 nmol/min/mL, p = 0.038), whereas other measures of antioxidant capacity were not significantly different between the groups. Product B effectively augmented concentrations of the anti-aging antioxidant catalase in healthy adults.
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Affiliation(s)
- Karen L Sweazea
- a School of Nutrition and Health Promotion , Arizona State University , Tempe , AZ , USA.,b School of Life Sciences , Arizona State University , Tempe , AZ , USA
| | - Carol S Johnston
- a School of Nutrition and Health Promotion , Arizona State University , Tempe , AZ , USA
| | - Jessica Knurick
- a School of Nutrition and Health Promotion , Arizona State University , Tempe , AZ , USA
| | - Courtney D Bliss
- a School of Nutrition and Health Promotion , Arizona State University , Tempe , AZ , USA
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Farahzadi R, Mesbah-Namin SA, Zarghami N, Fathi E. L-carnitine Effectively Induces hTERT Gene Expression of Human Adipose Tissue-derived Mesenchymal Stem Cells Obtained from the Aged Subjects. Int J Stem Cells 2016; 9:107-14. [PMID: 27426092 PMCID: PMC4961110 DOI: 10.15283/ijsc.2016.9.1.107] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/09/2015] [Indexed: 11/22/2022] Open
Abstract
Background and Objectives Human mesenchymal stem cells (hMSCs) are attractive candidates for cell therapy and regenerative medicine due to their multipotency and ready availability, but their application can be complicated by the factors such as age of the donors and senescence-associated growth arrest during culture conditions. The latter most likely reflects the fact that aging of hMSCs is associated with a rise in intracellular reactive oxygen species, loss of telomerase activity, decrease in human telomerase reverse transcriptase (hTERT) expression and finally eroded telomere ends. Over-expression of telomerase in hMSCs leads to telomere elongation and may help to maintain replicative life–span of these cells. The aim of this study was to evaluate of the effect of L-carnitine (LC) as an antioxidant on the telomerase gene expression and telomere length in aged adipose tissue-derived hMSCs. Methods For this purpose, cells were isolated from healthy aged volunteers and their viabilities were assessed by MTT assay. Quantitative gene expression of hTERT and absolute telomere length measurement were also performed by real-time PCR in the absence and presence of different doses of LC (0.1, 0.2 and 0.4 mM). Results The results indicated that LC could significantly increase the hTERT gene expression and telomere length, especially in dose of 0.2 mM of LC and in 48 h treatment for the aged adipose tissue-derived hMSCs samples. Conclusion It seems that LC would be a good candidate to improve the lifespan of the aged adipose tissue-derived hMSCs due to over-expression of telomerase and lengthening of the telomeres.
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Affiliation(s)
- Raheleh Farahzadi
- Department of Clinical Biochemistry, Faculty of Medical Sciences, Tarbiat Modares University, Tabriz, Iran
| | - Seyed Alireza Mesbah-Namin
- Department of Clinical Biochemistry, Faculty of Medical Sciences, Tarbiat Modares University, Tabriz, Iran
| | - Nosratollah Zarghami
- Department of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz, Iran.,Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ezzatollah Fathi
- Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
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Mostafa T, Rashed L, Taymour M. Seminal cyclooxygenase relationship with oxidative stress in infertile oligoasthenoteratozoospermic men with varicocele. Andrologia 2016; 48:137-42. [PMID: 25906828 DOI: 10.1111/and.12423] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/24/2015] [Indexed: 02/05/2023] Open
Abstract
This study aimed to assess the relation of seminal cyclooxygenase COX-1, COX-2 with oxidative stress in infertile oligoasthenoteratozoospermic (OAT) men with varicocele (Vx). In all, 128 men were allocated into fertile men, fertile men with Vx, infertile OAT men without Vx and infertile OAT men with Vx. They were subjected to history taking, clinical examination and semen analysis. Also, seminal COX-1, COX-2, malondialdehyde (MDA) and glutathione peroxidase (GPx) were estimated. Mean levels of seminal COX-1, COX-2 were over-expressed, the mean level of seminal MDA was significantly increased, and the mean level of seminal GPx was significantly decreased in infertile OAT men with Vx compared with other groups. Seminal COX-1 and COX-2 were over-expressed in cases with Vx grade III compared with Vx grades I, II cases and in cases with bilateral Vx compared with unilateral Vx. There was significant negative correlation between seminal COX-1 and COX-2 with sperm concentration, sperm motility, sperm normal morphology, seminal GPx and significant positive correlation with seminal MDA. It is concluded that seminal COX-1 and COX-2 are over-expressed in infertile OAT men with Vx compared with fertile men with/without and infertile OAT men without Vx being associated with oxidative stress, Vx grade and Vx laterality.
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Affiliation(s)
- T Mostafa
- Andrology and Sexology Department, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - L Rashed
- Medical Biochemistry Department, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - M Taymour
- Dermatology and Andrology Department, Egypt Air Hospital, Cairo, Egypt
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Pelclova D, Zdimal V, Kacer P, Fenclova Z, Vlckova S, Syslova K, Navratil T, Schwarz J, Zikova N, Barosova H, Turci F, Komarc M, Pelcl T, Belacek J, Kukutschova J, Zakharov S. Oxidative stress markers are elevated in exhaled breath condensate of workers exposed to nanoparticles during iron oxide pigment production. J Breath Res 2016; 10:016004. [PMID: 26828137 DOI: 10.1088/1752-7155/10/1/016004] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Markers of oxidative stress and inflammation were analysed in the exhaled breath condensate (EBC) and urine samples of 14 workers (mean age 43 ± 7 years) exposed to iron oxide aerosol for an average of 10 ± 4 years and 14 controls (mean age 39 ± 4 years) by liquid chromatography-electrospray ionization-mass spectrometry/mass spectrometry (LC-ESI-MS/MS) after solid-phase extraction. Aerosol exposure in the workplace was measured by particle size spectrometers, a scanning mobility particle sizer (SMPS) and an aerodynamic particle sizer (APS), and by aerosol concentration monitors, P-TRAK and DustTRAK DRX. Total aerosol concentrations in workplace locations varied greatly in both time and space. The median mass concentration was 0.083 mg m(-3) (IQR 0.063-0.133 mg m(-3)) and the median particle concentration was 66 800 particles cm(-3) (IQR 16,900-86,900 particles cm(-3)). In addition, more than 80% of particles were smaller than 100 nm in diameter. Markers of oxidative stress, malondialdehyde (MDA), 4-hydroxy-trans-hexenale (HHE), 4-hydroxy-trans-nonenale (HNE), 8-isoProstaglandin F2α (8-isoprostane) and aldehydes C6-C12, in addition to markers of nucleic acid oxidation, including 8-hydroxy-2-deoxyguanosine (8-OHdG), 8-hydroxyguanosine (8-OHG), 5-hydroxymethyl uracil (5-OHMeU), and of proteins, such as o-tyrosine (o-Tyr), 3-chlorotyrosine (3-ClTyr), and 3-nitrotyrosine (3-NOTyr) were analysed in EBC and urine by LC-ESI-MS/MS. Almost all markers of lipid, nucleic acid and protein oxidation were elevated in the EBC of workers comparing with control subjects. Elevated markers were MDA, HNE, HHE, C6-C10, 8-isoprostane, 8-OHdG, 8-OHG, 5-OHMeU, 3-ClTyr, 3-NOTyr, o-Tyr (all p < 0.001), and C11 (p < 0.05). Only aldehyde C12 and the pH of samples did not differ between groups. Markers in urine were not elevated. These findings suggest the adverse effects of nano iron oxide aerosol exposure and support the utility of oxidative stress biomarkers in EBC. The analysis of urine oxidative stress biomarkers does not support the presence of systemic oxidative stress in iron oxide pigment production workers.
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Affiliation(s)
- Daniela Pelclova
- Charles University in Prague and General University Hospital in Prague, First Faculty of Medicine, Department of Occupational Medicine, Na Bojišti 1, 128 00 Prague 2, Czech Republic
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67
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Pelclova D, Zdimal V, Fenclova Z, Vlckova S, Turci F, Corazzari I, Kacer P, Schwarz J, Zikova N, Makes O, Syslova K, Komarc M, Belacek J, Navratil T, Machajova M, Zakharov S. Markers of oxidative damage of nucleic acids and proteins among workers exposed to TiO2 (nano) particles. Occup Environ Med 2015; 73:110-8. [PMID: 26644454 DOI: 10.1136/oemed-2015-103161] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 11/11/2015] [Indexed: 12/19/2022]
Abstract
OBJECTIVE The use of nanotechnology is growing enormously and occupational physicians have an increasing interest in evaluating potential hazards and finding biomarkers of effect in workers exposed to nanoparticles. METHODS A study was carried out with 36 workers exposed to (nano)TiO2 pigment and 45 controls. Condensate (EBC) titanium and markers of oxidation of nucleic acids (including 8-hydroxy-2-deoxyguanosine (8-OHdG), 8-hydroxyguanosine (8-OHG), 5-hydroxymethyl uracil (5-OHMeU)) and proteins (such as o-tyrosine (o-Tyr), 3-chlorotyrosine (3-ClTyr) and 3-nitrotyrosine (3-NOTyr)) were analysed from samples of their exhaled breath. RESULTS In the production workshops, the median total mass 2012 and 2013 TiO2 concentrations were 0.65 and 0.40 mg/m(3), respectively. The median numbers of concentrations measured by the scanning mobility particle sizer (SMPS) and aerodynamic particle sizer (APS) were 1.98 × 10(4) and 2.32 × 10(4) particles/cm(3), respectively; and about 80% of those particles were smaller than 100 nm in diameter. In the research workspace, lower aerosol concentrations (0.16 mg/m(3) and 1.32 × 10(4) particles/cm(3)) were found. Titanium in the EBC was significantly higher in production workers (p<0.001) than in research workers and unexposed controls. Accordingly, most EBC oxidative stress markers, including in the preshift samples, were higher in production workers than in the two other groups. Multiple regression analysis confirmed an association between the production of TiO2 and the levels of studied biomarkers. CONCLUSIONS The concentration of titanium in EBC may serve as a direct exposure marker in workers producing TiO2 pigment; the markers of oxidative stress reflect the local biological effect of (nano)TiO2 in the respiratory tract of the exposed workers.
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Affiliation(s)
- D Pelclova
- First Faculty of Medicine, Department of Occupational Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - V Zdimal
- Institute of Chemical Process Fundamentals of the AS CR, vvi, Prague, Czech Republic
| | - Z Fenclova
- First Faculty of Medicine, Department of Occupational Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - S Vlckova
- First Faculty of Medicine, Department of Occupational Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - F Turci
- Interdepartmental Centre "G Scansetti" for Studies on Asbestos and Other Toxic Particulates and NIS Interdepartmental Centre for Nanostructured Interfaces and Surfaces, University of Torino, Torino, Italy
| | - I Corazzari
- Interdepartmental Centre "G Scansetti" for Studies on Asbestos and Other Toxic Particulates and NIS Interdepartmental Centre for Nanostructured Interfaces and Surfaces, University of Torino, Torino, Italy
| | - P Kacer
- Institute of Chemical Technology, Prague, Czech Republic
| | - J Schwarz
- Institute of Chemical Process Fundamentals of the AS CR, vvi, Prague, Czech Republic
| | | | - O Makes
- Institute of Chemical Process Fundamentals of the AS CR, vvi, Prague, Czech Republic Institute of Chemical Process Fundamentals of the AS CR, vvi, Prague, Czech Republic
| | - K Syslova
- Institute of Chemical Technology, Prague, Czech Republic
| | - M Komarc
- First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Institute of Biophysics and Informatics, Prague, Czech Republic Faculty of Physical Education and Sport, Department of Kinanthropology and Humanities, Charles University in Prague, Prague, Czech Republic
| | - J Belacek
- First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Institute of Biophysics and Informatics, Prague, Czech Republic
| | - T Navratil
- J Heyrovský Institute of Physical Chemistry of the AS CR, vvi, Prague, Czech Republic First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Institute of Medical Biochemistry and Laboratory Diagnostics, Prague, Czech Republic
| | - M Machajova
- Faculty of Health Sciences and Social Work, Department of Public Health, Trnava University, Trnava, Slovakia
| | - S Zakharov
- First Faculty of Medicine, Department of Occupational Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
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Spilmont M, Léotoing L, Davicco MJ, Lebecque P, Miot-Noirault E, Pilet P, Rios L, Wittrant Y, Coxam V. Pomegranate Peel Extract Prevents Bone Loss in a Preclinical Model of Osteoporosis and Stimulates Osteoblastic Differentiation in Vitro. Nutrients 2015; 7:9265-84. [PMID: 26569295 PMCID: PMC4663593 DOI: 10.3390/nu7115465] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 10/12/2015] [Accepted: 10/14/2015] [Indexed: 12/23/2022] Open
Abstract
The nutritional benefits of pomegranate have attracted great scientific interest. The pomegranate, including the pomegranate peel, has been used worldwide for many years as a fruit with medicinal activity, mostly antioxidant properties. Among chronic diseases, osteoporosis, which is associated with bone remodelling impairment leading to progressive bone loss, could eventually benefit from antioxidant compounds because of the involvement of oxidative stress in the pathogenesis of osteopenia. In this study, with in vivo and ex vivo experiments, we investigated whether the consumption of pomegranate peel extract (PGPE) could limit the process of osteopenia. We demonstrated that in ovariectomized (OVX) C57BL/6J mice, PGPE consumption was able to significantly prevent the decrease in bone mineral density (-31.9%; p < 0.001 vs. OVX mice) and bone microarchitecture impairment. Moreover, the exposure of RAW264.7 cells to serum harvested from mice that had been given a PGPE-enriched diet elicited reduced osteoclast differentiation and bone resorption, as shown by the inhibition of the major osteoclast markers. In addition, PGPE appeared to substantially stimulate osteoblastic MC3T3-E1 alkaline phosphatase (ALP) activity at day 7, mineralization at day 21 and the transcription level of osteogenic markers. PGPE may be effective in preventing the bone loss associated with ovariectomy in mice, and offers a promising alternative for the nutritional management of this disease.
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Affiliation(s)
- Mélanie Spilmont
- Unité de Nutrition Humaine, CRNH Auvergne, UMR 1019, INRA, F-63000 Clermont-Ferrand, France.
- Unité de Nutrition Humaine, Université d'Auvergne, Clermont Université, BP 10448, F-63000 Clermont-Ferrand, France.
- GREENTECH SA Biopôle Clermont-Limagne, F-63360 Saint-Beauzire, France.
| | - Laurent Léotoing
- Unité de Nutrition Humaine, CRNH Auvergne, UMR 1019, INRA, F-63000 Clermont-Ferrand, France.
- Unité de Nutrition Humaine, Université d'Auvergne, Clermont Université, BP 10448, F-63000 Clermont-Ferrand, France.
| | - Marie-Jeanne Davicco
- Unité de Nutrition Humaine, CRNH Auvergne, UMR 1019, INRA, F-63000 Clermont-Ferrand, France.
- Unité de Nutrition Humaine, Université d'Auvergne, Clermont Université, BP 10448, F-63000 Clermont-Ferrand, France.
| | - Patrice Lebecque
- Unité de Nutrition Humaine, CRNH Auvergne, UMR 1019, INRA, F-63000 Clermont-Ferrand, France.
- Unité de Nutrition Humaine, Université d'Auvergne, Clermont Université, BP 10448, F-63000 Clermont-Ferrand, France.
| | - Elisabeth Miot-Noirault
- Imagerie Moléculaire et Thérapie Vectorisée, Université d'Auvergne, Clermont Université, UMR 990, INSERM, BP 10448, F-63000 Clermont-Ferrand, France.
| | - Paul Pilet
- Laboratoire d'Ingénierie Ostéo-Articulaire et Dentaire-LIOAD, Université de Nantes, UMR 791, INSERM, F-44042 Nantes, France.
| | - Laurent Rios
- GREENTECH SA Biopôle Clermont-Limagne, F-63360 Saint-Beauzire, France.
| | - Yohann Wittrant
- Unité de Nutrition Humaine, CRNH Auvergne, UMR 1019, INRA, F-63000 Clermont-Ferrand, France.
- Unité de Nutrition Humaine, Université d'Auvergne, Clermont Université, BP 10448, F-63000 Clermont-Ferrand, France.
| | - Véronique Coxam
- Unité de Nutrition Humaine, CRNH Auvergne, UMR 1019, INRA, F-63000 Clermont-Ferrand, France.
- Unité de Nutrition Humaine, Université d'Auvergne, Clermont Université, BP 10448, F-63000 Clermont-Ferrand, France.
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Dadaci Z, Oncel M, Oncel Acir N, Sahin E, Borazan M. Oxidative stress parameters and serum magnesium levels in patients with seasonal allergic conjunctivitis. Cutan Ocul Toxicol 2015; 35:270-4. [PMID: 26555509 DOI: 10.3109/15569527.2015.1100634] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE To evaluate oxidative stress parameters and serum magnesium (Mg) levels in patients with seasonal allergic conjunctivitis (SAC) during the pollen season. METHODS This observational cross-sectional study involved 35 patients with SAC without any other ocular and systemic diseases, and 38 consecutive, age- and sex-matched healthy subjects. Serum malondialdehyde (MDA), adjusted ischemia modified albumin (IMA), and Mg levels were quantified, and the results were compared between the groups. RESULTS No significant differences were found between the groups with respect to age (p = 0.416) and sex (p = 0.362). Serum MDA and adjusted IMA levels of the subjects with SAC (69.54 ± 7.71 μM and 0.74 ± 0.39 ABSU) were significantly higher than the control group (64.61 ± 5.89 μM and 0.57 ± 0.19 ABSU) (p = 0.002 and p = 0.025, respectively). There was no significant difference for serum Mg levels between the groups (p = 0.177). CONCLUSION We demonstrated higher levels of oxidative stress parameters in patients with SAC compared to the control group, which imply a possible role of oxidative stress in the pathogenesis of SAC.
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Affiliation(s)
- Zeynep Dadaci
- a Department of Ophthalmology , Mevlana (Rumi) University School of Medicine , Konya , Turkey and
| | - Mufide Oncel
- b Department of Clinical Biochemistry , Mevlana (Rumi) University School of Medicine , Konya , Turkey
| | - Nursen Oncel Acir
- a Department of Ophthalmology , Mevlana (Rumi) University School of Medicine , Konya , Turkey and
| | - Emel Sahin
- b Department of Clinical Biochemistry , Mevlana (Rumi) University School of Medicine , Konya , Turkey
| | - Mehmet Borazan
- a Department of Ophthalmology , Mevlana (Rumi) University School of Medicine , Konya , Turkey and
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