1
|
Kozin MS, Kiselev IS, Baulina NM, Pavlova GV, Boyko AN, Kulakova OG, Favorova OO. Risk of Multiple Sclerosis: Analysis of Interactions between Variants of Nuclear and Mitochondrial Genomes. Mol Biol 2021. [DOI: 10.1134/s0026893321050071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
2
|
Smorodchenko A, Schneider S, Rupprecht A, Hilse K, Sasgary S, Zeitz U, Erben RG, Pohl EE. UCP2 up-regulation within the course of autoimmune encephalomyelitis correlates with T-lymphocyte activation. Biochim Biophys Acta Mol Basis Dis 2017; 1863:1002-1012. [PMID: 28130201 DOI: 10.1016/j.bbadis.2017.01.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Revised: 01/07/2017] [Accepted: 01/23/2017] [Indexed: 01/20/2023]
Abstract
Multiple sclerosis (MS) is an inflammatory demyelinating autoimmune disorder of the central nervous system (CNS) associated with severe neurological disability. Reactive oxygen species (ROS) and mitochondrial dysfunction play a pivotal role in the pathogenesis of this disease. Several members of the mitochondrial uncoupling protein subfamily (UCP2-UCP5) were suggested to regulate ROS by diminishing the mitochondrial membrane potential and constitute therefore a promising pharmacological target for MS. To evaluate the role of different uncoupling proteins in neuroinflammation, we have investigated their expression patterns in murine brain and spinal cord (SC) during different stages of experimental autoimmune encephalomyelitis (EAE), an animal model for MS. At mRNA and protein levels we found that only UCP2 is up-regulated in the SC, but not in brain. The increase in UCP2 expression was antigen-independent, reached its maximum between 14 and 21days in both OVA and MOG immunized animals and correlated with an augmented number of CD3+ T-lymphocytes in SC parenchyma. The decrease in abundance of UCP4 was due to neuronal injury and was only detected in CNS of MOG-induced EAE animals. The results provide evidence that the involvement of mitochondrial UCP2 in CNS inflammation during EAE may be mainly explained by the invasion of activated T-lymphocytes. This conclusion coincides with our previous observation that UCP2 is up-regulated in activated and rapidly proliferating T-cells and participates in fast metabolic re-programming of cells during proliferation.
Collapse
Affiliation(s)
- Alina Smorodchenko
- Institute of Physiology, Pathophysiology and Biophysics, University of Veterinary Medicine, Vienna, Austria; Institute of Vegetative Anatomy, Charité - Universitätsmedizin Berlin, Germany.
| | - Stephanie Schneider
- Institute of Physiology, Pathophysiology and Biophysics, University of Veterinary Medicine, Vienna, Austria
| | - Anne Rupprecht
- Institute of Physiology, Pathophysiology and Biophysics, University of Veterinary Medicine, Vienna, Austria
| | - Karoline Hilse
- Institute of Physiology, Pathophysiology and Biophysics, University of Veterinary Medicine, Vienna, Austria
| | - Soleman Sasgary
- Institute of Physiology, Pathophysiology and Biophysics, University of Veterinary Medicine, Vienna, Austria
| | - Ute Zeitz
- Institute of Physiology, Pathophysiology and Biophysics, University of Veterinary Medicine, Vienna, Austria
| | - Reinhold G Erben
- Institute of Physiology, Pathophysiology and Biophysics, University of Veterinary Medicine, Vienna, Austria
| | - Elena E Pohl
- Institute of Physiology, Pathophysiology and Biophysics, University of Veterinary Medicine, Vienna, Austria.
| |
Collapse
|
3
|
Yang L, Dong Z, Zhou J, Ma Y, Pu W, Zhao D, He H, Ji H, Yang Y, Wang X, Xu X, Pang Y, Zou H, Jin L, Yang C, Wang J. Common UCP2 variants contribute to serum urate concentrations and the risk of hyperuricemia. Sci Rep 2016; 6:27279. [PMID: 27273589 PMCID: PMC4897637 DOI: 10.1038/srep27279] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 05/13/2016] [Indexed: 12/20/2022] Open
Abstract
Elevated serum urate, which is regulated at multiple levels including genetic variants, is a risk factor for gout and other metabolic diseases. This study aimed to investigate the association between UCP2 variants and serum urate as well as hyperuricemia in a Chinese population. In total, 4332 individuals were genotyped for two common UCP2 variants, -866G/A and Ala55Val. These loci were not associated either serum urate level or with a risk of hyperuricemia in the total group of subjects. However, in females, -866G/A and Ala55Val were associated with a lower serum urate (P = 0.006 and 0.014, seperately) and played a protective role against hyperuricemia (OR = 0.80, P = 0.018; OR = 0.79, P = 0.016). These associations were not observed in the males. After further stratification, the two loci were associated with serum urate in overweight, but not underweight females. The haplotype A-T (-866G/A-Ala55Val) was a protective factor for hyperuricemia in the female subgroup (OR = 0.80, P = 0.017). This present study identified a novel gene, UCP2, that influences the serum urate concentration and the risk of hyperuricemia, and the degree of association varies with gender and BMI levels.
Collapse
Affiliation(s)
- Luyu Yang
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Zheng Dong
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Jingru Zhou
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Yanyun Ma
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Weilin Pu
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Dongbao Zhao
- Division of Rheumatology and Immunology, Changhai Hospital, Shanghai, China
| | - Hongjun He
- Division of Rheumatology, Taixing People's Hospital, Jiangsu Province, China
| | - Hengdong Ji
- Division of Rheumatology, Taizhou People's Hospital, Jiangsu Province, China
| | - Yajun Yang
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.,Fudan-Taizhou Institute of Health Sciences, Taizhou, Jiangsu Province, China
| | - Xiaofeng Wang
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.,Fudan-Taizhou Institute of Health Sciences, Taizhou, Jiangsu Province, China
| | - Xia Xu
- Division of Rheumatology and Immunology, Changhai Hospital, Shanghai, China
| | - Yafei Pang
- Division of Rheumatology and Immunology, Changhai Hospital, Shanghai, China
| | - Hejian Zou
- Division of Rheumatology, Huashan Hospital, Fudan University, Shanghai, China.,Institute of Rheumatology, Immunology and Allergy, Fudan University, Shanghai, China
| | - Li Jin
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.,Fudan-Taizhou Institute of Health Sciences, Taizhou, Jiangsu Province, China
| | - Chengde Yang
- Division of Rheumatology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jiucun Wang
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.,Fudan-Taizhou Institute of Health Sciences, Taizhou, Jiangsu Province, China.,Institute of Rheumatology, Immunology and Allergy, Fudan University, Shanghai, China
| |
Collapse
|
4
|
Massó JFM, Zarranz JJ, Otaegui D, López de Munain A. Neurogenetic Disorders in the Basque Population. Ann Hum Genet 2014; 79:57-75. [DOI: 10.1111/ahg.12088] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 09/11/2014] [Indexed: 12/12/2022]
Affiliation(s)
- José Félix Martí Massó
- Department of Neurology at Hospital Universitario Donostia (San Sebastián, Guipúzcoa); Basque Health Service (Osakidetza); Basque Country Spain
- Department of Neurosciences; University of Basque Country (UPV-EHU)
- Centre for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED); Carlos III Health Institute, Ministry of Economy and Competitiveness; Spain
- BioDonostia Institute, San Sebastián, Guipúzcoa
- JAKIUNDE, Academia de las Ciencias, de las Artes y de las Letras
| | - Juan José Zarranz
- Department of Neurology at Hospital Universitario Cruces (Baracaldo, Vizcaya); Basque Health Service (Osakidetza); Basque Country Spain
- Department of Neurosciences; University of Basque Country (UPV-EHU)
- BioCruces Institute, Baracaldo; Vizcaya
- JAKIUNDE, Academia de las Ciencias, de las Artes y de las Letras
| | | | - Adolfo López de Munain
- Department of Neurology at Hospital Universitario Donostia (San Sebastián, Guipúzcoa); Basque Health Service (Osakidetza); Basque Country Spain
- Department of Neurosciences; University of Basque Country (UPV-EHU)
- Centre for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED); Carlos III Health Institute, Ministry of Economy and Competitiveness; Spain
- BioDonostia Institute, San Sebastián, Guipúzcoa
| |
Collapse
|
5
|
Bonora M, De Marchi E, Patergnani S, Suski JM, Celsi F, Bononi A, Giorgi C, Marchi S, Rimessi A, Duszyński J, Pozzan T, Wieckowski MR, Pinton P. Tumor necrosis factor-α impairs oligodendroglial differentiation through a mitochondria-dependent process. Cell Death Differ 2014; 21:1198-208. [PMID: 24658399 DOI: 10.1038/cdd.2014.35] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Revised: 01/22/2014] [Accepted: 02/06/2014] [Indexed: 01/09/2023] Open
Abstract
Mitochondrial defects, affecting parameters such as mitochondrial number and shape, levels of respiratory chain complex components and markers of oxidative stress, have been associated with the appearance and progression of multiple sclerosis. Nevertheless, mitochondrial physiology has never been monitored during oligodendrocyte progenitor cell (OPC) differentiation, especially in OPCs challenged with proinflammatory cytokines. Here, we show that tumor necrosis factor alpha (TNF-α) inhibits OPC differentiation, accompanied by altered mitochondrial calcium uptake, mitochondrial membrane potential, and respiratory complex I activity as well as increased reactive oxygen species production. Treatment with a mitochondrial uncoupler (FCCP) to mimic mitochondrial impairment also causes cells to accumulate at the progenitor stage. Interestingly, AMP-activated protein kinase (AMPK) levels increase during TNF-α exposure and inhibit OPC differentiation. Overall, our data indicate that TNF-α induces metabolic changes, driven by mitochondrial impairment and AMPK activation, leading to the inhibition of OPC differentiation.
Collapse
Affiliation(s)
- M Bonora
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Interdisciplinary Center for the Study of Inflammation (ICSI), Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - E De Marchi
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Interdisciplinary Center for the Study of Inflammation (ICSI), Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - S Patergnani
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Interdisciplinary Center for the Study of Inflammation (ICSI), Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - J M Suski
- 1] Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Interdisciplinary Center for the Study of Inflammation (ICSI), Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy [2] Department of Biochemistry, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - F Celsi
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - A Bononi
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Interdisciplinary Center for the Study of Inflammation (ICSI), Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - C Giorgi
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Interdisciplinary Center for the Study of Inflammation (ICSI), Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - S Marchi
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Interdisciplinary Center for the Study of Inflammation (ICSI), Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - A Rimessi
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Interdisciplinary Center for the Study of Inflammation (ICSI), Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - J Duszyński
- Department of Biochemistry, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - T Pozzan
- 1] Istituto Veneto di Medicina Molecolare, Fondazione per la Ricerca Biomedica Avanzata, Padua, Italy [2] Dipartimento di Scienze Biomediche, Università di Padova, Padua, Italy [3] Consiglio Nazionale delle Ricerche, Istituto di Neuroscienze, Sezione di Padova, Padua, Italy
| | - M R Wieckowski
- Department of Biochemistry, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - P Pinton
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Interdisciplinary Center for the Study of Inflammation (ICSI), Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| |
Collapse
|
6
|
Raddatz BBR, Hansmann F, Spitzbarth I, Kalkuhl A, Deschl U, Baumgärtner W, Ulrich R. Transcriptomic meta-analysis of multiple sclerosis and its experimental models. PLoS One 2014; 9:e86643. [PMID: 24475162 PMCID: PMC3903571 DOI: 10.1371/journal.pone.0086643] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Accepted: 12/12/2013] [Indexed: 12/19/2022] Open
Abstract
Background Multiple microarray analyses of multiple sclerosis (MS) and its experimental models have been published in the last years. Objective Meta-analyses integrate the information from multiple studies and are suggested to be a powerful approach in detecting highly relevant and commonly affected pathways. Data sources ArrayExpress, Gene Expression Omnibus and PubMed databases were screened for microarray gene expression profiling studies of MS and its experimental animal models. Study eligibility criteria Studies comparing central nervous system (CNS) samples of diseased versus healthy individuals with n >1 per group and publically available raw data were selected. Material and Methods Included conditions for re-analysis of differentially expressed genes (DEGs) were MS, myelin oligodendrocyte glycoprotein-induced experimental autoimmune encephalomyelitis (EAE) in rats, proteolipid protein-induced EAE in mice, Theiler’s murine encephalomyelitis virus-induced demyelinating disease (TMEV-IDD), and a transgenic tumor necrosis factor-overexpressing mouse model (TNFtg). Since solely a single MS raw data set fulfilled the inclusion criteria, a merged list containing the DEGs from two MS-studies was additionally included. Cross-study analysis was performed employing list comparisons of DEGs and alternatively Gene Set Enrichment Analysis (GSEA). Results The intersection of DEGs in MS, EAE, TMEV-IDD, and TNFtg contained 12 genes related to macrophage functions. The intersection of EAE, TMEV-IDD and TNFtg comprised 40 DEGs, functionally related to positive regulation of immune response. Over and above, GSEA identified substantially more differentially regulated pathways including coagulation and JAK/STAT-signaling. Conclusion A meta-analysis based on a simple comparison of DEGs is over-conservative. In contrast, the more experimental GSEA approach identified both, a priori anticipated as well as promising new candidate pathways.
Collapse
Affiliation(s)
- Barbara B. R. Raddatz
- Department of Pathology, University of Veterinary Medicine Hannover, Hannover, Germany
- Center for Systems Neuroscience, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Florian Hansmann
- Department of Pathology, University of Veterinary Medicine Hannover, Hannover, Germany
- Center for Systems Neuroscience, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Ingo Spitzbarth
- Department of Pathology, University of Veterinary Medicine Hannover, Hannover, Germany
- Center for Systems Neuroscience, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Arno Kalkuhl
- Department of Non-Clinical Drug Safety, Boehringer Ingelheim Pharma GmbH&Co KG, Biberach (Riß), Germany
| | - Ulrich Deschl
- Department of Non-Clinical Drug Safety, Boehringer Ingelheim Pharma GmbH&Co KG, Biberach (Riß), Germany
| | - Wolfgang Baumgärtner
- Department of Pathology, University of Veterinary Medicine Hannover, Hannover, Germany
- Center for Systems Neuroscience, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Reiner Ulrich
- Department of Pathology, University of Veterinary Medicine Hannover, Hannover, Germany
- Center for Systems Neuroscience, University of Veterinary Medicine Hannover, Hannover, Germany
- * E-mail:
| |
Collapse
|
7
|
Llobet L, Gómez-Durán A, Iceta R, Iglesias E, Montoya J, Martín-Martínez J, Ara JR, Ruiz-Pesini E. Stressed cybrids model demyelinated axons in multiple sclerosis. Metab Brain Dis 2013; 28:639-45. [PMID: 23612782 DOI: 10.1007/s11011-013-9410-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Accepted: 04/15/2013] [Indexed: 11/28/2022]
Abstract
Multiple sclerosis is likely caused by a complex interaction of multiple genes and environmental factors. The contribution of mitochondrial DNA genetic backgrounds has been frequently reported. To evaluate the effect of mitochondrial DNA haplogroups in the same genetic and environmental circumstances, we have built human transmitochondrial cell lines and simulated the effect of axon demyelination, one of the hallmarks of multiple sclerosis pathology, by altering the ionic gradients through the plasmalemma and increasing ATP consumption. In this model, mitochondrial biogenesis is observed. This process is larger in Uk cybrids, which mirrors their lower oxidative phosphorylation capacity in basal conditions. This model replicates a process occurring in both patients suffering from multiple sclerosis and several animal models of axon demyelination. Therefore, it can be used to analyze the contribution of various mitochondrial DNA genotypes to multiple sclerosis. In this sense, a longer or stronger energy stress, such as that associated with demyelinated axons in multiple sclerosis, could make Uk individuals more susceptible to this pathology. Finally, pharmacologic compounds targeted to mitochondrial biogenesis could be a potential therapy for multiple sclerosis.
Collapse
Affiliation(s)
- Laura Llobet
- Departamento de Bioquímica, Biología Molecular y Celular, Centro de Investigaciones Biomédicas En Red de Enfermedades Raras (CIBERER) Universidad de Zaragoza, Zaragoza, Spain
| | | | | | | | | | | | | | | |
Collapse
|
8
|
Association of the UCP2 45-bp insertion/deletion polymorphism with diabetes type 2 and obesity in Saudi population. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2012. [DOI: 10.1016/j.ejmhg.2012.04.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
|
9
|
Yu SJ, Liu HC, Ling-Ling E, Wang DS, Zhu GX. Proliferation and differentiation of osteoblasts from the mandible of osteoporotic rats. Exp Biol Med (Maywood) 2012; 237:395-406. [PMID: 22550338 DOI: 10.1258/ebm.2011.011217] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The objective of this study was to identify the differences between osteoblasts derived from normal adult rat mandibles and osteoporotic adult rats. An osteoporotic animal model was established by performing a bilateral ovariectomy (ovx group). The proliferation and differentiation abilities of osteoblasts were determined by MTT (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl-2H-tetrazolium bromide), alkaline phosphatase (ALP) and osteocalcin release (OC) assays. Transmission electron microscopy (TEM) was performed to assess differences in the ultrastructure. Proliferating cell nuclear antigen (PCNA) and uncoupling protein 2 (UCP2) protein concentrations were analyzed by Western blot. In addition, UCP2 protein in osteoblasts was assessed by immunohistochemistry staining. ATP and reactive oxygen species (ROS) concentrations were analyzed separately with ATP and ROS quantification kits. At four and 12 weeks after the operation, osteoblasts of the ovx group showed earlier attachment, fewer dead cells and faster growth compared with cells in the sham group. TEM showed that osteoblasts of the ovx group had fewer folds, lysosomes, peroxisomes and less rough endoplasmic reticulum. The results of the MTT, ALP activity and OC assays were all higher in osteoblasts from the ovx group at four or 12 weeks postsurgery than osteoblasts from the sham group. PCNA protein concentrations in the ovx group increased significantly compared with those of the sham group at four or 12 weeks after the operation, but UCP2 concentrations decreased over the same time period. UCP2 immunohistochemical staining of osteoblasts showed that the protein was concentrated in the cytoplasm and that the osteoblasts from the sham group had higher expression than those from the ovx group. The ATP and ROS concentrations of the ovx groups were significantly higher than the sham groups at four or 12 weeks postsurgery. Therefore, we concluded that there are differences in cell ultrastructure, proliferation, differentiation, ATP and ROS concentrations, and PCNA and UCP2 protein expression levels in osteoblasts from the mandibles of rats of the ovx group compared with those from the sham group.
Collapse
Affiliation(s)
- Shu-Juan Yu
- Department of Stomatology, The General Hospital of Jinan Military Region of PLA, Jinan 250031, China
| | | | | | | | | |
Collapse
|
10
|
|
11
|
Kristofiková Z, Bocková M, Hegnerová K, Bartos A, Klaschka J, Rícný J, Rípová D, Homola J. Enhanced levels of mitochondrial enzyme 17beta-hydroxysteroid dehydrogenase type 10 in patients with Alzheimer disease and multiple sclerosis. MOLECULAR BIOSYSTEMS 2009; 5:1174-9. [PMID: 19756307 DOI: 10.1039/b904799a] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The multifunctional mitochondrial enzyme 17beta-hydroxysteroid dehydrogenase type 10 might play a role in the development of Alzheimer disease via its high-affinity binding to amyloid beta peptides and its neuronal over-expression. It is suggested that the cerebrospinal fluid levels of the enzyme, free or bound to amyloid beta peptides, are a potential specific biomarker of Alzheimer disease. However, mitochondrial dysfunction seems to play a role in many neurological diseases including multiple sclerosis. In this study, the specificity of changes in relation to the enzyme over-expression was evaluated using enzyme-linked immunosorbent and surface plasmon resonance sensors. The data indicated pronounced increases in the enzyme levels, specifically to 179% in multiple sclerosis and to 573% in Alzheimer disease when compared to the age-matched controls. Although the differences between both diseases were statistically significant, enzyme levels do not appear to be a highly specific biomarker of Alzheimer disease. On the other hand, enhancement in levels of the enzyme bound to amyloid beta peptides was only observed in people with Alzheimer disease, which suggests that the complex should be further considered as a possible biomarker. In patients with multiple sclerosis, our results are the first to demonstrate significant changes in enzyme expression and to suggest possible alterations in amyloid beta peptides.
Collapse
Affiliation(s)
- Zdena Kristofiková
- Alzheimer Disease Center, Prague Psychiatric Centre, Ustavní 91, 181 03 Prague 8, Bohnice, Czech Republic.
| | | | | | | | | | | | | | | |
Collapse
|
12
|
A homozygous genetic variant of mitochondrial uncoupling protein 4 exerts protection against the occurrence of multiple sclerosis. Neuromolecular Med 2009; 11:101-5. [PMID: 19536655 DOI: 10.1007/s12017-009-8071-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2009] [Accepted: 05/31/2009] [Indexed: 01/06/2023]
Abstract
Multiple sclerosis (MS), which results in damage of the white matter at multiple foci, poses a far-reaching public health problem in view of the burden it imposes on the affected young and middle-aged. Some previous data suggested that roles could be played in the demyelinization of the white matter of the brain by the malfunctioning of the mitochondria and mitochondria-associated reactive oxygen species. In this context, we hypothesized that the finely tuned dynamic stability of the mitochondrial membrane potential (MMP), which is the main mirror of the functional state of the mitochondria, is essential for the intact nature of the glia cells in the brain. Setting out from this, our aim in this study was to examine how the rs10807344 and rs2270450 genetic variants of mitochondrial uncoupling protein 4 (mUCP4) can give rise to the development of MS, since mUCP4 is presumed to be of great importance in the regulation of the MMP and cellular energy metabolism. The clinical and genetic data on 120 relapsing-remitting MS patients and 250 neuroimaging alteration-free subjects were analyzed. The rs10807344 CC genotype proved to exert a protective effect against the occurrence of MS (neuroimaging alteration-free controls, 58%; MS group, 33%; P < 0.0000089; OR, 0.32; 95% CI: 0.2-0.56, P < 0.005). The present findings indirectly raise the possibility that a shift or imbalance in the finally regulated MMP plays a role in the development of MS.
Collapse
|
13
|
Mitchell A, Pangilinan F, Van der Meer J, Molloy AM, Troendle J, Conley M, Kirke PN, Scott JM, Brody LC, Mills JL. Uncoupling protein 2 polymorphisms as risk factors for NTDs. ACTA ACUST UNITED AC 2009; 85:156-60. [PMID: 19137581 DOI: 10.1002/bdra.20520] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND Both environmental and genetic factors are involved in the etiology of NTDs. Inadequate folate intake and obesity are important environmental risk factors. Several folate-related genetic variants have been identified as risk factors; however, little is known about how genetic variants relate to the increased risk seen in obese women. Uncoupling Protein 2 (UCP2) is an attractive candidate to screen for NTD risk because of its possible role in obesity as well as energy metabolism, type-2 diabetes, and the regulation of reactive oxygen species. Interestingly, a previous study found that a common UCP2 compound homozygous genotype was associated with a threefold increase in NTD risk. METHODS We evaluated three polymorphisms, -866G>A, A55V, and the 3'UTR 45 bp insertion/deletion, as risk factors for NTDs in Irish NTD cases (n = 169), their mothers (n = 163), their fathers (n = 167), and normal control subjects (n = 332). RESULTS Allele and genotype frequencies were not significantly different when comparing NTD mothers, NTD fathers, or affected children to controls. Additionally, the previously reported risk genotype (combined homozygosity of 55VV and 3'UTR 45 bp deletion/deletion) was not present at a higher frequency in any NTD group when compared to controls. CONCLUSIONS In our Irish study population, UCP2 polymorphisms did not influence NTD risk. Moreover, the prevalence of this allele in other populations was similar to the Irish prevalence but far lower than reported in the previous NTD study, suggesting that this previous finding of an association with NTDs might have been due to an unrepresentative study sample.
Collapse
Affiliation(s)
- Adam Mitchell
- Molecular Pathogenesis Section, Genome Technology Branch, National Human Genome Research Institute, 50 South Drive, Bethesda, MD 20892-8004, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Mancuso M, Filosto M, Orsucci D, Siciliano G. Mitochondrial DNA sequence variation and neurodegeneration. Hum Genomics 2009; 3:71-8. [PMID: 19129091 PMCID: PMC3525185 DOI: 10.1186/1479-7364-3-1-71] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Mitochondria, the powerhouse of the cell, play a critical role in several metabolic processes and apoptotic pathways. Many lines of evidence suggest that mitochondria have a central role in ageing-related neurodegenerative diseases. Moreover, there is a long history of investigations on mitochondria aimed at identifying genetic markers relating to ageing and neurodegenerative diseases. In this review, some of the major neurodegenerative disorders are highlighted and the role of mitochondrial haplogroups in the pathogenetic cascade leading to these diseases is discussed.
Collapse
Affiliation(s)
- Michelangelo Mancuso
- Department of Neuroscience, Neurological Clinic, University of Pisa, Via Roma 67, Pisa, Italy.
| | | | | | | |
Collapse
|
15
|
Otaegui D, Zuriarrain O, Castillo-Triviño T, Aransay A, Ruíz-Martinez J, Olaskoaga J, Marti-Masso J, Lopez de Munain A. Association between synapsin III gene promoter SNPs and multiple sclerosis in Basque patients. Mult Scler 2008; 15:124-8. [PMID: 18755822 DOI: 10.1177/1352458508096682] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Synapsins are a family of neuron-specific phosphoproteins, one of whose subunits is encoded by the SYN3 gene. This gene is located close to one of the multiple sclerosis susceptibility regions (in 22q13.1). Two single-nucleotide polymorphisms (SNPs) (rs133945 and rs133946) in the promoter region of this gene have been proposed as factors protecting against MS. This relationship is not clear because another report failed to found such association. OBJECTIVES In an attempt to clarify this association, the frequency of these SNPs was analyzed in a population of 221 Spanish MS patients with a cluster of 72 Basque patients and in 373 controls with a cluster of 138 controls of a Basque origin. METHODS The SNis analysis was performed by 9 PCR. RESULTS According to our findings, these SNPs are differently distributed in the two populations. This significant bias should therefore be taken into account in association studies. Our data suggest that the C/C genotype in rs133946 and the G/G genotype in rs133945 could be protecting factors against MS in the Basque population.
Collapse
Affiliation(s)
- D Otaegui
- Unidad Experimental, Hospital Donosita, San Sebastian, Spain.
| | | | | | | | | | | | | | | |
Collapse
|
16
|
Otaegui D, Ruíz-Martínez J, Olaskoaga J, Emparanza JI, López de Munain A. Influence of CCR5-Δ32 genotype in Spanish population with multiple sclerosis. Neurogenetics 2007; 8:201-5. [PMID: 17351762 DOI: 10.1007/s10048-007-0085-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2006] [Accepted: 02/28/2007] [Indexed: 10/23/2022]
Abstract
A number of association studies have explored the relationship between the CCR5-Delta32 allele and the risk of developing multiple sclerosis (MS), with varying results. In light of the results of several studies that have analyzed the role of the allele in MS, it has been proposed that the allele is involved in the etiopathogeny of the disease. Our study revealed a statistically significant difference between the study group and the control group for the carriers of at least one deleted allele (P = 0.027). The allele was more frequent in the control group, which suggests a possible protective effect of this deletion against MS. When ethnic origin was taken into account in the same analysis, we saw that the bulk of the difference was attributable to the Basque group, although the trend was also visible in the control group. Consideration of ethnic origin is therefore essential for the analysis of our sample. CCR5-Delta32 allele distribution was higher in the Basque control population than in the Basque MS population, which suggests that it confers a protective effect against MS. Relevant values were a P value of 0.008 and an odds ratio of 0.168 (95% confidence interval, 0.038 to 0.737).
Collapse
Affiliation(s)
- D Otaegui
- Unidad Experimental, Hospital Donostia, San Sebastian, Spain.
| | | | | | | | | |
Collapse
|