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Silaidos C, Pilatus U, Grewal R, Matura S, Lienerth B, Pantel J, Eckert GP. Sex-associated differences in mitochondrial function in human peripheral blood mononuclear cells (PBMCs) and brain. Biol Sex Differ 2018; 9:34. [PMID: 30045765 PMCID: PMC6060503 DOI: 10.1186/s13293-018-0193-7] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 07/13/2018] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Alzheimer's disease (AD) is the most common form of dementia, and it affects more women than men. Mitochondrial dysfunction (MD) plays a key role in AD, and it is detectable at an early stage of the degenerative process in peripheral tissues, such as peripheral mononuclear blood cells (PBMCs). However, whether these changes are also reflected in cerebral energy metabolism and whether sex-specific differences in mitochondrial function occur are not clear. Therefore, we estimated the correlation between mitochondrial function in PBMCs and brain energy metabolites and examined sex-specific differences in healthy participants to elucidate these issues. METHODS The current pilot study included 9 male and 15 female healthy adults (mean age 30.8 ± 7.1 years). Respiration and activity of mitochondrial respiratory complexes were measured using a Clarke-electrode (Oxygraph-2k system), and adenosine triphosphate (ATP) levels were determined using a bioluminescence-based assay in isolated PBMCs. Citrate synthase activity as a mitochondrial marker was measured using a photometric assay. Concentrations of brain energy metabolites were quantified in the same individuals using 1H-magnetic resonance spectroscopy (MRS). RESULTS We detected sex-associated differences in mitochondrial function. Mitochondrial complexes I, I+II, and IV and uncoupled respiration and electron transport system (ETS) capacity in PBMCs isolated from blood samples of females were significantly (p < 0.05; p < 0.01) higher compared to males. ATP levels in the PBMCs of female participants were approximately 10% higher compared to males. Citrate synthase (CS) activity, a marker of mitochondrial content, was significantly (p < 0.05) higher in females compared to males. Sex-associated differences were also found for brain metabolites. The N-acetylaspartate (NAA) concentration was significantly higher in female participants compared to males in targeted regions. This difference was observed in white matter (WM) and an area with a high percentage (> 50%) of gray matter (GM) (p < 0.05; p < 0.01). The effect sizes indicated a strong influence of sex on these parameters. Sex-associated differences were found in PBMCs and brain, but the determined parameters were not significantly correlated. CONCLUSIONS Our study revealed sex-associated differences in mitochondrial function in healthy participants. The underlying mechanisms must be elucidated in more detail, but our study suggests that mitochondrial function in PBMCs is a feasible surrogate marker to detect differences in mitochondrial function and energy metabolism in humans and it underscores the necessity of sex-specific approaches in therapies that target mitochondrial dysfunction.
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Affiliation(s)
- C. Silaidos
- Nutrition in Prevention and Therapy, Institute for Nutritional Sciences, University of Giessen, Wilhelmstr. 20, 35392 Giessen, Germany
| | - U. Pilatus
- Institute for Neuroradiology, Goethe University Frankfurt, Schleusenweg 2-16, 60528 Frankfurt/Main, Germany
| | - R. Grewal
- Nutrition in Prevention and Therapy, Institute for Nutritional Sciences, University of Giessen, Wilhelmstr. 20, 35392 Giessen, Germany
| | - S. Matura
- Institute of General Practice, Goethe University Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt/Main, Germany
- Department of Psychiatry, Psychosomatic Medicine and Psychotherapy, University Hospital Frankfurt, Heinrich-Hoffmann Str. 10, 60528 Frankfurt/Main, Germany
| | - B. Lienerth
- Brain Imaging Centre, Schleusenweg 2-16, 60528 Frankfurt/Main, Germany
| | - J. Pantel
- Institute of General Practice, Goethe University Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt/Main, Germany
| | - G. P. Eckert
- Nutrition in Prevention and Therapy, Institute for Nutritional Sciences, University of Giessen, Wilhelmstr. 20, 35392 Giessen, Germany
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Matura S, Tesky VA, Pilatus U, Hattingen E, Fleckenstein J, Vogt L, Banzer W, Deichmann R, Lienerth B, Pantel J. [P2–573]: EFFECTS OF AEROBIC EXERCISE ON BRAIN METABOLISM AND GREY MATTER VOLUME IN OLDER ADULTS: RESULTS OF THE SMART TRIAL. Alzheimers Dement 2017. [DOI: 10.1016/j.jalz.2017.06.1232] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Silke Matura
- Institute of General Practice, Goethe UniversityFrankfurt am MainGermany
| | - Valentina A. Tesky
- Institute of General Practice, Goethe UniversityFrankfurt am MainGermany
| | - Ulrich Pilatus
- Institute of Neuroradiology, Goethe University HospitalFrankfurt am MainGermany
| | | | | | - Lutz Vogt
- Institute of Sports Sciences, Goethe UniversityFrankfurt am MainGermany
| | - Winfried Banzer
- Institute of Sports Sciences, Goethe UniversityFrankfurt am MainGermany
| | | | | | - Johannes Pantel
- Institute of General Practice, Goethe UniversityFrankfurt am MainGermany
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Matura S, Fleckenstein J, Deichmann R, Engeroff T, Füzéki E, Hattingen E, Hellweg R, Lienerth B, Pilatus U, Schwarz S, Tesky VA, Vogt L, Banzer W, Pantel J. Effects of aerobic exercise on brain metabolism and grey matter volume in older adults: results of the randomised controlled SMART trial. Transl Psychiatry 2017; 7:e1172. [PMID: 28934191 PMCID: PMC5538117 DOI: 10.1038/tp.2017.135] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 04/21/2017] [Accepted: 05/08/2017] [Indexed: 01/29/2023] Open
Abstract
There is mounting evidence that aerobic exercise has a positive effect on cognitive functions in older adults. To date, little is known about the neurometabolic and molecular mechanisms underlying this positive effect. The present study used magnetic resonance spectroscopy and quantitative MRI to systematically explore the effects of physical activity on human brain metabolism and grey matter (GM) volume in healthy aging. This is a randomised controlled assessor-blinded two-armed trial (n=53) to explore exercise-induced neuroprotective and metabolic effects on the brain in cognitively healthy older adults. Participants (age >65) were allocated to a 12-week individualised aerobic exercise programme intervention (n=29) or a 12-week waiting control group (n=24). The main outcomes were the change in cerebral metabolism and its association to brain-derived neurotrophic factor (BDNF) levels as well as changes in GM volume. We found that cerebral choline concentrations remained stable after 12 weeks of aerobic exercise in the intervention group, whereas they increased in the waiting control group. No effect of training was seen on cerebral N-acetyl-aspartate concentrations, nor on markers of neuronal energy reserve or BDNF levels. Further, we observed no change in cortical GM volume in response to aerobic exercise. The finding of stable choline concentrations in the intervention group over the 3 month period might indicate a neuroprotective effect of aerobic exercise. Choline might constitute a valid marker for an effect of aerobic exercise on cerebral metabolism in healthy aging.
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Affiliation(s)
- S Matura
- Institute of General Practice, Goethe University, Frankfurt/Main, Germany,Institut für Allgemeinmedizin, Goethe Universität, Theodor-Stern-Kai 7, 60590 Frankfurt/Main, Germany. E-mail:
| | - J Fleckenstein
- Department of Sports Medicine, Institute of Sports Sciences, Goethe University, Frankfurt/Main, Germany
| | - R Deichmann
- Brain Imaging Center, Frankfurt/Main, Germany
| | - T Engeroff
- Department of Sports Medicine, Institute of Sports Sciences, Goethe University, Frankfurt/Main, Germany
| | - E Füzéki
- Department of Sports Medicine, Institute of Sports Sciences, Goethe University, Frankfurt/Main, Germany
| | - E Hattingen
- Institute of Neuroradiology, Goethe University Hospital Frankfurt, Frankfurt/Main, Germany
| | - R Hellweg
- Neurobiology and Neurotrophins Laboratory, Department of Psychiatry and Psychotherapy, Charité University Medicine, Berlin, Germany
| | - B Lienerth
- Brain Imaging Center, Frankfurt/Main, Germany
| | - U Pilatus
- Institute of Neuroradiology, Goethe University Hospital Frankfurt, Frankfurt/Main, Germany
| | - S Schwarz
- Department of Sports Medicine, Institute of Sports Sciences, Goethe University, Frankfurt/Main, Germany
| | - V A Tesky
- Institute of General Practice, Goethe University, Frankfurt/Main, Germany
| | - L Vogt
- Department of Sports Medicine, Institute of Sports Sciences, Goethe University, Frankfurt/Main, Germany
| | - W Banzer
- Department of Sports Medicine, Institute of Sports Sciences, Goethe University, Frankfurt/Main, Germany
| | - J Pantel
- Institute of General Practice, Goethe University, Frankfurt/Main, Germany
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Droby A, Yuen KSL, Schänzer A, Spiwoks-Becker I, Acker T, Lienerth B, Zipp F, Deichmann R. An improved anatomical MRI technique with suppression of fixative fluid artifacts for the investigation of human postmortem brain phantoms. Magn Reson Med 2016; 77:1115-1123. [DOI: 10.1002/mrm.26196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 01/21/2016] [Accepted: 02/11/2016] [Indexed: 12/15/2022]
Affiliation(s)
- Amgad Droby
- Department of Neurology; Focus Program Translational Neuroscience (FTN) and Immunotherapy (FZI), Rhine-Main Neuroscience Network (rmn2), University Medical Centre of the Johannes Gutenberg University Mainz; Germany
- Neuroimaging Center (NIC) of the Focus Program Translational Neuroscience (FTN), Johannes Gutenberg University; Mainz Germany
| | - Kenneth Sung Lai Yuen
- Neuroimaging Center (NIC) of the Focus Program Translational Neuroscience (FTN), Johannes Gutenberg University; Mainz Germany
| | - Anne Schänzer
- Institute for Neuropathology, Justus Liebig University; Giessen Germany
| | - Isabella Spiwoks-Becker
- Institute of Microanatomy and Neurobiology, University Medical Center of the Johannes Gutenberg University Mainz; Germany
| | - Till Acker
- Institute for Neuropathology, Justus Liebig University; Giessen Germany
| | - Bianca Lienerth
- Brain Imaging Center (BIC), Goethe University; Frankfurt am Main Germany
| | - Frauke Zipp
- Department of Neurology; Focus Program Translational Neuroscience (FTN) and Immunotherapy (FZI), Rhine-Main Neuroscience Network (rmn2), University Medical Centre of the Johannes Gutenberg University Mainz; Germany
- Neuroimaging Center (NIC) of the Focus Program Translational Neuroscience (FTN), Johannes Gutenberg University; Mainz Germany
| | - Ralf Deichmann
- Brain Imaging Center (BIC), Goethe University; Frankfurt am Main Germany
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Matura S, Tesky VA, Pilatus U, Hattingen E, Fleckenstein J, Vogt L, Banzer W, Deichmann R, Lienerth B, Pantel J. P1‐148: Smart‐sport and cerebral metabolism in old age: An mrs/MRI study. Alzheimers Dement 2015. [DOI: 10.1016/j.jalz.2015.06.346] [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] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Silke Matura
- Institute of General PracticeGoethe UniversityFrankfurt am MainGermany
| | | | - Ulrich Pilatus
- Institute of NeuroradiologyGoethe University HospitalFrankfurt am MainGermany
| | - Elke Hattingen
- Institute of NeuroradiologyGoethe University HospitalFrankfurt am MainGermany
| | | | - Lutz Vogt
- Institute of Sports SciencesGoethe UniversityFrankfurt am MainGermany
| | - Winfried Banzer
- Institute of Sports SciencesGoethe UniversityFrankfurt am MainGermany
| | | | | | - Johannes Pantel
- Department of General MedicineGoethe UniversityFrankfurt am MainGermany
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