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Al-Kafaji G, Alwehaidah MS, Alsabbagh MM, Alharbi MA, Bakhiet M. Mitochondrial DNA haplogroup analysis in Saudi Arab patients with multiple sclerosis. PLoS One 2022; 17:e0279237. [PMID: 36534684 PMCID: PMC9762579 DOI: 10.1371/journal.pone.0279237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Accepted: 12/03/2022] [Indexed: 12/24/2022] Open
Abstract
Previous studies have suggested that mitochondrial DNA (mtDNA) variants are associated with multiple sclerosis (MS), a complex neurodegenerative immune-mediated disease of the central nervous system. Since mtDNA is maternally inherited without recombination, specific mtDNA variants defining genetic background are associated with the susceptibility to human diseases. To assess the contribution of mtDNA haplogroups to the predisposition of MS in an Arab population, we analysed sequencing data of mitochondrial genomes from 47 native Saudi Arab individuals including 23 patients with relapsing-remitting MS (RRMS) and 24 healthy controls. All patients and controls could be classified into ten haplogroups. The European-specific haplogroup U was more prevalent in patients than in the controls (26.1% vs. 4.2%), whereas haplogroup T was only present in patients and haplogroups HV and N were only found in controls. Haplogroup U was significantly association with increased risk of MS (odds ratio = 6.26, p<0.05), although the association did not maintain significance after adjustment for multiple comparisons. Haplotype U was more prevalent in patients with younger age of onset (p = 0.006), but there was no relationship between haplotype U and disease severity, disease duration or EDSS and age-matched carriers and non-carriers of haplogroup U (p>0.05). Definition site of haplogroup U include the variant m.12308A>G in MT-TL2 gene which was found to affect highly conserved position within the variable arm of tRNALeu(CUN) and thus may impact mitochondrial protein synthesis, and two other variants namely m.11467A>G in MT-ND4 gene and m.12372G>A in MT-ND5 gene which were previously linked with mitochondrial function. Despite the small number of subjects, which may limit the statistical power of the study, our results showed for the first time a possible contribution of haplogroup U to the predisposition to MS in an Arab population. These findings warrant further validation in a large cohort to distinguish a genuine effect specific to MS from a chance finding due to small sampling.
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Affiliation(s)
- Ghada Al-Kafaji
- Department of Molecular Medicine and Al-Jawhara Centre for Molecular Medicine, Genetics, and Inherited Disorders, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain
- * E-mail:
| | - Materah Salem Alwehaidah
- Department of Medical Laboratory, Faculty of Allied Health, Kuwait University, Kuwait City, Kuwait
| | - Manahel Mahmood Alsabbagh
- Department of Molecular Medicine and Al-Jawhara Centre for Molecular Medicine, Genetics, and Inherited Disorders, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain
| | - Maram A. Alharbi
- College of Forensic Sciences, Naif Arab University for Security Sciences, Riyadh, Kingdom of Saudi Arabia
| | - Moiz Bakhiet
- Department of Molecular Medicine and Al-Jawhara Centre for Molecular Medicine, Genetics, and Inherited Disorders, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain
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2
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The role of mtDNA haplogroups on metabolic features in narcolepsy type 1. Mitochondrion 2022; 63:37-42. [PMID: 35051655 DOI: 10.1016/j.mito.2022.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 01/09/2022] [Accepted: 01/12/2022] [Indexed: 11/24/2022]
Abstract
Narcolepsy type 1 (NT1) is due to selective loss of hypocretin (hcrt)-producing-neurons. Hcrt is a neuropeptide regulating the sleep/wake cycle, as well as feeding behavior. A subset of NT1 patients become overweight/obese, with a dysmetabolic phenotype. We hypothesized that mitochondrial DNA (mtDNA) sequence variation might contribute to the metabolic features in NT1 and we undertook an exploratory survey of mtDNA haplogroups in a cohort of well-characterized patients. We studied 246 NT1 Italian patients, fully defined for their metabolic features, including obesity, hypertension, low HDL, hypertriglyceridemia and hyperglycemia. For haplogroup assignment, the mtDNA control region was sequenced in combination with an assessment of diagnostic markers in the coding region. NT1 patients displayed the same mtDNA haplogroups (H, HV, J, K, T, U) frequency as those reported in the general Italian population. The majority of NT1 patients (64%) were overweight: amongst these, 35% were obese, 48% had low HDL cholesterol levels, and 31% had hypertriglyceridemia. We identified an association between haplogroups J, K and hypertriglyceridemia (P=0.03, 61.5% and 61.5%, respectively vs. 31.3% of the whole sample) and after correction for age and sex, we observed a reduction of these associations (OR=3.65, 95%CI=0.76-17.5, p=0.106 and 1.73, 0.52-5.69, p=0.368, respectively). The low HDL level showed a trend for association with haplogroup J (P=0.09, 83.3% vs. 47.4% of the whole sample) and after correction we observed an OR=6.73, 95%CI=0.65-69.9, p=0.110. Our study provides the first indication that mtDNA haplogroups J and K can modulate metabolic features of NT1 patients, linking mtDNA variation to the dysmetabolic phenotype in NT1.
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3
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Mitonuclear interactions influence multiple sclerosis risk. Gene 2020; 758:144962. [DOI: 10.1016/j.gene.2020.144962] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 06/28/2020] [Accepted: 07/13/2020] [Indexed: 12/16/2022]
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4
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Boyko AN, Melnikov MV, Kozin MS, Kulakova OG. [The role of mitochondria in pathological mechanisms of innate immunity in multiple]. Zh Nevrol Psikhiatr Im S S Korsakova 2020; 120:32-37. [PMID: 32844627 DOI: 10.17116/jnevro202012007232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The review discusses the role of mitochondria in multiple sclerosis (MS). Previously, damage to the mitochondria was regarded as a manifestation of secondary damage to axons and neurons, i.e. as a marker of neurodenegation. Recently, the role of mitochondria in the early stages of MS development, when they could participate in the activation of innate immunity and trigger activation of autoimmune responses of acquired immunity, has been increasingly discussed. The role of polymorphism mitochondrial DNA changes in MS is discussed.
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Affiliation(s)
- A N Boyko
- Pirogov Russian National Research Medical University, Moscow, Russia.,Federal Center of Brain Research and Neurotechnologies of FMBA, Moscow, Russia
| | - M V Melnikov
- Pirogov Russian National Research Medical University, Moscow, Russia.,Federal Center of Brain Research and Neurotechnologies of FMBA, Moscow, Russia.,Institute of Immunology of FMBA, Moscow, Russia
| | - M S Kozin
- Pirogov Russian National Research Medical University, Moscow, Russia.,Federal Center of Brain Research and Neurotechnologies of FMBA, Moscow, Russia.,National Medical Research Center of Cardiology, Moscow, Russia
| | - O G Kulakova
- Pirogov Russian National Research Medical University, Moscow, Russia.,National Medical Research Center of Cardiology, Moscow, Russia
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5
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Boyko AN, Kozin MS, Osmak GZ, Kulakova OG, Favorova OO. Mitochondrial genome and risk of multiple sclerosis. ACTA ACUST UNITED AC 2019. [DOI: 10.14412/2074-2711-2019-3-43-46] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Mitochondrial DNA (mtDNA) polymorphism makes a certain contribution to the formation of a genetic risk of multiple sclerosis (MS).Objective: to analyze the frequency of mtDNA variants in patients with MS and control individuals in the Russian population. A similar study was conducted for the first time.Patients and methods. The polymorphism of mtDNA was studied in the Russian population: in 283 unrelated patients with relapsing-remitting MS and in 290 unrelated healthy controls matched for gender and age.Results and discussion. The frequency of haplogroup J in the patients with MS was twice higher than that in the control group (p=0.0055) (odds ratio (OR) 2.00; 95% confidence interval (CI). 1.21–3.41). This association was mostly observed in women (p=0.0083) (OR 2.20; 95% CI, 1.19–4.03). There was also a significant association of the A allele of MT-ND5 (m. 13708G>A) with MS (p=0.03) (OR 1.89; 95% CI 1.11–3.32). Sex stratification showed that the association with MS was significant only in women (p=0.009; OR, 2.52; 95% CI, 1.29–5.14). Further investigations will aim to analyze mtDNA variability (at the level of individual polymorphisms, haplogroups, and whole genome) in patients with relapsing-remitting MS and in those with primary progressive MS versus healthy individuals and patients with relapsing-remitting MS according to disease severity.Conclusion. The data obtained in the Russian population suggest that mtDNA variations are involved in MS risk, to a greater extent in women.
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Affiliation(s)
- A. N. Boyko
- N.I. Pirogov Russian National Research Medical University, Ministry of Health of Russia;
Federal Center of Cerebrovascular Disease and Stroke, Ministry of Health of Russia
| | - M. S. Kozin
- N.I. Pirogov Russian National Research Medical University, Ministry of Health of Russia;
Federal Center of Cerebrovascular Disease and Stroke, Ministry of Health of Russia
| | - G. Zh. Osmak
- N.I. Pirogov Russian National Research Medical University, Ministry of Health of Russia;
Federal Center of Cerebrovascular Disease and Stroke, Ministry of Health of Russia
| | - O. G. Kulakova
- N.I. Pirogov Russian National Research Medical University, Ministry of Health of Russia
| | - O. O. Favorova
- N.I. Pirogov Russian National Research Medical University, Ministry of Health of Russia
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6
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Chinnery PF, Gomez-Duran A. Oldies but Goldies mtDNA Population Variants and Neurodegenerative Diseases. Front Neurosci 2018; 12:682. [PMID: 30369864 PMCID: PMC6194173 DOI: 10.3389/fnins.2018.00682] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 09/10/2018] [Indexed: 12/31/2022] Open
Abstract
mtDNA is transmitted through the maternal line and its sequence variability, which is population specific, is assumed to be phenotypically neutral. However, several studies have shown associations between the variants defining some genetic backgrounds and the susceptibility to several pathogenic phenotypes, including neurodegenerative diseases. Many of these studies have found that some of these variants impact many of these phenotypes, including the ones defining the Caucasian haplogroups H, J, and Uk, while others, such as the ones defining the T haplogroup, have phenotype specific associations. In this review, we will focus on those that have shown a pleiotropic effect in population studies in neurological diseases. We will also explore their bioenergetic and genomic characteristics in order to provide an insight into the role of these variants in disease. Given the importance of mitochondrial population variants in neurodegenerative diseases a deeper analysis of their effects might unravel new mechanisms of disease and help design new strategies for successful treatments.
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Affiliation(s)
- Patrick F Chinnery
- Department of Clinical Neurosciences, School of Clinical Medicine, University of Cambridge, Cambridge, United Kingdom.,Medical Research Council-Mitochondrial Biology Unit, Cambridge Biomedical Campus, Cambridge, United Kingdom
| | - Aurora Gomez-Duran
- Department of Clinical Neurosciences, School of Clinical Medicine, University of Cambridge, Cambridge, United Kingdom.,Medical Research Council-Mitochondrial Biology Unit, Cambridge Biomedical Campus, Cambridge, United Kingdom
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7
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Kozin MS, Kulakova OG, Favorova OO. Involvement of Mitochondria in Neurodegeneration in Multiple Sclerosis. BIOCHEMISTRY (MOSCOW) 2018; 83:813-830. [PMID: 30200866 DOI: 10.1134/s0006297918070052] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Functional disruption and neuronal loss followed by progressive dysfunction of the nervous system underlies the pathogenesis of numerous disorders defined as "neurodegenerative diseases". Multiple sclerosis, a chronic inflammatory demyelinating disease of the central nervous system resulting in serious neurological dysfunctions and disability, is one of the most common neurodegenerative diseases. Recent studies suggest that disturbances in mitochondrial functioning are key factors leading to neurodegeneration. In this review, we consider data on mitochondrial dysfunctions in multiple sclerosis, which were obtained both with patients and with animal models. The contemporary data indicate that the axonal degeneration in multiple sclerosis largely results from the activation of Ca2+-dependent proteases and from misbalance of ion homeostasis caused by energy deficiency. The genetic studies analyzing association of mitochondrial DNA polymorphic variants in multiple sclerosis suggest the participation of mitochondrial genome variability in the development of this disease, although questions of the involvement of individual genomic variants are far from being resolved.
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Affiliation(s)
- M S Kozin
- Pirogov Russian National Research Medical University, Moscow, 117997, Russia. .,National Medical Research Center of Cardiology, Moscow, 121552, Russia
| | - O G Kulakova
- Pirogov Russian National Research Medical University, Moscow, 117997, Russia. .,National Medical Research Center of Cardiology, Moscow, 121552, Russia
| | - O O Favorova
- Pirogov Russian National Research Medical University, Moscow, 117997, Russia.,National Medical Research Center of Cardiology, Moscow, 121552, Russia
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8
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Andalib S, Emamhadi M, Yousefzadeh-Chabok S, Salari A, Sigaroudi AE, Vafaee MS. MtDNA T4216C variation in multiple sclerosis: a systematic review and meta-analysis. Acta Neurol Belg 2016; 116:439-443. [PMID: 27457485 DOI: 10.1007/s13760-016-0675-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Accepted: 07/10/2016] [Indexed: 01/22/2023]
Abstract
MtDNA T4216C variation has frequently been investigated in Multiple Sclerosis (MS) patients; nonetheless, controversy has existed about the evidence of association of this variation with susceptibility to MS. The present systematic review and meta-analysis converge the results of the preceding publications, pertaining to association of mtDNA T4216C variation with susceptibility to MS, into a common conclusion. A computerized literature search in English was carried out to retrieve relevant publications from which required data were extracted. Using a fixed effect model, pooled odds ratio (OR), 95 % confidence interval (95 % CI), and P value were calculated for association of mtDNA T4216C variation with susceptibility to MS. The pooled results showed that there was a significant association between mtDNA T4216C variation and MS (OR = 1.38, 95 % CI = 1.13-1.67, P = 0.001). The present systematic review and meta-analysis suggest that mtDNA T4216C variation is a contributory factor in susceptibility to MS.
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Affiliation(s)
- Sasan Andalib
- Department of Neurosurgery, Poursina Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Mohammadreza Emamhadi
- Department of Neurosurgery, Poursina Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran.
| | - Shahrokh Yousefzadeh-Chabok
- Department of Neurosurgery, Poursina Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Arsalan Salari
- Department of Cardiology and Cardiology Research Center, Heshmat Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Abdolhosein Emami Sigaroudi
- Department of Health and Social Determinants of Health Research Center, School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran
| | - Manouchehr Seyedi Vafaee
- Department of Psychiatry, University of Southern Denmark & Department of Nuclear Medicine, Odense University Hospital, Odense, Denmark
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9
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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.
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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
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10
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Bellizzi D, D'Aquila P, Giordano M, Montesanto A, Passarino G. Global DNA methylation levels are modulated by mitochondrial DNA variants. Epigenomics 2012; 4:17-27. [PMID: 22332655 DOI: 10.2217/epi.11.109] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
AIM In the present study, we investigated whether global DNA methylation levels are affected by mitochondrial DNA (mtDNA) variants, which are known to modulate mitochondrial functions. MATERIALS & METHODS Global DNA methylation levels were evaluated in peripheral blood DNA collected from adult subjects and in vitro using the DNA of cybrid cells harboring mtDNAs of different haplogroups. In these cells, mRNA expression of genes involved in DNA methylation processes, and ATP and reactive oxygen species levels were also analyzed. RESULTS The analysis revealed that methylation levels were higher in the subjects carrying the J haplogroup than in non-J carriers. Consistently, cybrids with J haplogroup mtDNA showed higher methylation levels than other cybrids. Interestingly, we observed overexpression of the MAT1A gene and low ATP and ROS levels in J cybrids. CONCLUSION Our findings indicate that mtDNA-specific interactions between mitochondria and the nucleus regulate epigenetic changes, possibly by affecting oxidative phosphorylation efficiency.
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Affiliation(s)
- Dina Bellizzi
- Department of Cell Biology, University of Calabria, 87036 Rende, Italy
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11
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Martinez-Saez E, Shah S, Costa C, Fleminger S, Connor S, Bodi I. Adult onset leukodystrophy with neuroaxonal spheroids and demyelinating plaque-like lesions. Neuropathology 2011; 32:285-92. [PMID: 22007734 DOI: 10.1111/j.1440-1789.2011.01257.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Adult onset leukodystrophy with neuroaxonal spheroids is an uncommon cause of dementia. Both hereditary (autosomal dominant) and sporadic cases have been described. A 41-year-old African woman presented with inappropriate behavior and personality change consistent with frontal lobe dysfunction. MRI demonstrated diffuse frontoparietal white matter signal abnormality and volume loss, as well as focal enhancing white matter lesions, while CT scan showed white matter calcifications. She had been gradually deteriorating over the last 5 years, diagnosed as having progressive demyelinating illness. She died of recurrent chest infections. There was no familial history. The brain showed prominent symmetrical white matter changes with greyish discolorization mainly affecting the frontal and parietal lobes, with less involvement of the temporal lobe and only mildly affecting the occipital white matter. Histology revealed deep white matter atrophy with many neuroaxonal spheroids labelled by neurofilament and β-amyloid precursor protein. In addition, scattered inactive demyelinating plaque-like lesions were found in the periventricular areas, brainstem and the cervical spinal cord. This case had typical features of an adult onset leukodystrophy with neuroaxonal spheroids. However, we also demonstrated demyelinating plaque-like lesions, which has not been previously described. The possibility of a demyelinating origin contributing to the changes may be considered in the pathogenesis of this condition.
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Affiliation(s)
- Elena Martinez-Saez
- Department of Clinical Neuropathology, King's College Hospital, NHS Foundation Trust, London, UK
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12
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Ghabaee M, Omranisikaroudi M, Amrisaroukolaei S, Meysamie A, Sahraian MA, Bayati A, Sanati MH, Houshman M, Sadeghian H, Vajihazaman K. Mitochondrial mutation in Iranian patients with multiple sclerosis, correlation between haplogroups H, A and clinical manifestations. Cell Mol Neurobiol 2008; 29:341-6. [PMID: 19009343 DOI: 10.1007/s10571-008-9325-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2008] [Accepted: 10/17/2008] [Indexed: 11/26/2022]
Abstract
As multiple sclerosis (MS) has long been known to be associated with Leber, hereditary optic neuropathy (LHON), a disease caused by mitochondrial (mtDNA) mutations, in this study we assessed possible involvement of mtDNA point mutation in MS patients. Fifty-two MS patients whose disease was confirmed with revised McDonald criteria and referred to Iranian Center of Neurological Research of Imam Khomeini hospital during 2006-2007 entered the study. Secondary mtDNA mutations, age, gender, clinical disability according to expanded disability status scale (EDSS), course of the disease, and presenting symptoms were the variables investigated in this study. DNA purification was performed by Diatom DNA Extraction Kit. Analysis of data was done by SPSS V11.5. The prevalent mutations with frequency of 19.2% were J, L, and T haplogroups. Haplotype A was more prevalent in patients with younger age of onset (P-value = 0.012) and high proportion of haplogroup H was associated with optic nerve involvement (P-value = 0.015). No motor symptoms were seen in haplogroup H patients. There is no significant relationship between duration of the disease and EDSS in different mutation of mtDNA.
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Affiliation(s)
- Mojdeh Ghabaee
- Department of Neurology, Iranian Center of Neurological Research, Tehran University of Medical Sciences, Keshavarz Blvd., Tehran, Iran.
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Marcuello A, Martínez-Redondo D, Dahmani Y, Casajús JA, Ruiz-Pesini E, Montoya J, López-Pérez MJ, Díez-Sánchez C. Human mitochondrial variants influence on oxygen consumption. Mitochondrion 2008; 9:27-30. [PMID: 18952007 DOI: 10.1016/j.mito.2008.10.002] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2008] [Revised: 09/25/2008] [Accepted: 10/07/2008] [Indexed: 11/24/2022]
Abstract
This work investigates if human mitochondrial variants influence on maximal oxygen consumption (VO(2max)). With this purpose we recruited, as a uniform population in term of nutritional habits and life style, 114 healthy male Spanish subjects that practiced fitness exercises 3-4 times a week. Once mtDNA haplogroups were determined, we found that J presents with lower VO(2max) (P=0.02) than nonJ variants. J has been related with a lower efficiency of electron transport chain (ETC), diminished ATP and ROS production. Thus, the difficult to compensate the mitochondrial energetic deficiency could explain the accumulation of J haplogroup in LHON and multiple sclerosis. Furthermore, the lower ROS production associated to J could also account for the accrual of this variant in elderly people consequent to a decreased oxidative damage.
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Affiliation(s)
- Ana Marcuello
- Departmento de Bioquímica y Biología Molecular y Celular, Universidad de Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain
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14
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Ban M, Elson J, Walton A, Turnbull D, Compston A, Chinnery P, Sawcer S. Investigation of the role of mitochondrial DNA in multiple sclerosis susceptibility. PLoS One 2008; 3:e2891. [PMID: 18682780 PMCID: PMC2494944 DOI: 10.1371/journal.pone.0002891] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2008] [Accepted: 07/15/2008] [Indexed: 11/18/2022] Open
Abstract
Several lines of evidence suggest that mitochondrial genetic factors may influence susceptibility to multiple sclerosis. To explore this hypothesis further, we re-sequenced the mitochondrial genome (mtDNA) from 159 patients with multiple sclerosis and completed a haplogroup analysis including a further 835 patients and 1,506 controls. A trend towards over-representation of super-haplogroup U was the only evidence for association with mtDNA that we identified in these samples. In a parallel analysis of nuclear encoded mitochondrial genes, we also found a trend towards association with the complex I gene, NDUFS2. These results add to the evidence suggesting that variation in mtDNA and nuclear encoded mitochondrial genes may contribute to disease susceptibility in multiple sclerosis.
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Affiliation(s)
- Maria Ban
- Department of Clinical Neurosciences, University of Cambridge, Addenbrooke's Hospital, Cambridge, United Kingdom.
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15
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Yu X, Koczan D, Sulonen AM, Akkad DA, Kroner A, Comabella M, Costa G, Corongiu D, Goertsches R, Camina-Tato M, Thiesen HJ, Nyland HI, Mørk SJ, Montalban X, Rieckmann P, Marrosu MG, Myhr KM, Epplen JT, Saarela J, Ibrahim SM. mtDNA nt13708A variant increases the risk of multiple sclerosis. PLoS One 2008; 3:e1530. [PMID: 18270557 PMCID: PMC2217590 DOI: 10.1371/journal.pone.0001530] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2007] [Accepted: 12/31/2007] [Indexed: 01/09/2023] Open
Abstract
Background Mitochondrial DNA (mtDNA) polymorphism is a possible factor contributing to the maternal parent-of-origin effect in multiple sclerosis (MS) susceptibility. Methods and Findings In order to investigate the role of mtDNA variations in MS, we investigated six European MS case-control cohorts comprising >5,000 individuals. Three well matched cohorts were genotyped with seven common, potentially functional mtDNA single nucleotide polymorphisms (SNPs). A SNP, nt13708 G/A, was significantly associated with MS susceptibility in all three cohorts. The nt13708A allele was associated with an increased risk of MS (OR = 1.71, 95% CI 1.28–2.26, P = 0.0002). Subsequent sequencing of the mtDNA of 50 individuals revealed that the nt13708 itself, rather than SNPs linked to it, was responsible for the association. However, the association of nt13708 G/A with MS was not significant in MS cohorts which were not well case-control matched, indicating that the significance of association was affected by the population structure of controls. Conclusions Taken together, our finding identified the nt13708A variant as a susceptibility allele to MS, which could contribute to defining the role of the mitochondrial genome in MS pathogenesis.
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Affiliation(s)
- Xinhua Yu
- Section of Immunogenetics, University of Rostock, Rostock, Germany
| | - Dirk Koczan
- Department of Immunology, University of Rostock, Rostock, Germany
| | - Anna-Maija Sulonen
- Department of Molecular Medicine, National Public Health Institute, Helsinki, Finland
| | - Denis A. Akkad
- Department of Human Genetics, Ruhr University, International Graduate School of Neuroscience (IGSN), Bochum, Germany
| | - Antje Kroner
- Clinical Research Group for Multiple Sclerosis and Neuroimmunology, Department of Neurology, University of Würzburg, Wüzburg, Germany
| | - Manuel Comabella
- Unitat de Neuroimmunologia Clinica, Hospital Universitari Vall d'Hebron, Universitat Autonoma de Barcelona, Barcelona, Spain
| | - Gianna Costa
- The Centro Sclerosi Multipla, Dipartimento di Scienze Cardiovascolari e Neurologiche, University of Cagliari, Cagliari, Italy
| | - Daniela Corongiu
- The Centro Sclerosi Multipla, Dipartimento di Scienze Cardiovascolari e Neurologiche, University of Cagliari, Cagliari, Italy
| | | | - Montserrat Camina-Tato
- Unitat de Neuroimmunologia Clinica, Hospital Universitari Vall d'Hebron, Universitat Autonoma de Barcelona, Barcelona, Spain
| | | | - Harald I. Nyland
- Department of Neurology, Haukeland University Hospital, University of Bergen, Bergen, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Sverre J. Mørk
- Department of Pathology, Haukeland University Hospital, Gade's Institute, University of Bergen, Bergen, Norway
| | - Xavier Montalban
- Unitat de Neuroimmunologia Clinica, Hospital Universitari Vall d'Hebron, Universitat Autonoma de Barcelona, Barcelona, Spain
| | - Peter Rieckmann
- Clinical Research Group for Multiple Sclerosis and Neuroimmunology, Department of Neurology, University of Würzburg, Wüzburg, Germany
| | - Maria G. Marrosu
- The Centro Sclerosi Multipla, Dipartimento di Scienze Cardiovascolari e Neurologiche, University of Cagliari, Cagliari, Italy
| | - Kjell-Morten Myhr
- Department of Neurology, Haukeland University Hospital, University of Bergen, Bergen, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Joerg T. Epplen
- Department of Human Genetics, Ruhr University, International Graduate School of Neuroscience (IGSN), Bochum, Germany
| | - Janna Saarela
- Department of Molecular Medicine, National Public Health Institute, Helsinki, Finland
| | - Saleh M. Ibrahim
- Section of Immunogenetics, University of Rostock, Rostock, Germany
- *E-mail:
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16
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Houshmand M, Banoei MM, Tabarsi P, Panahi MSS, Hooshiar Kashani B, Ebrahimi G, Zargar L, Farnia P, Morris MW, Mansouri D, Velayati AA, Mirsaeidi MS. Do mitochondrial DNA haplogroups play a role in susceptibility to tuberculosis? Respirology 2008; 12:823-7. [PMID: 17986109 DOI: 10.1111/j.1440-1843.2007.01163.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND OBJECTIVES Mitochondrial DNA has a unique role in ATP production and subsequent mitochondrial reactive oxygen species (ROS) production in eukaryotic cells and there is a potential role for ROS and oxygen burst against Mycobacterium tuberculosis, an intracellular pathogen. This study aimed to determine whether the frequency of different mitochondrial haplogroups was significantly different in patients with tuberculosis (TB) compared with a normal population. METHODS Mitochondrial DNA haplogroups M, N, J and K were studied by PCR-restriction fragment length polymorphism and sequencing. Cases were 54 patients with confirmed smear positive pulmonary TB. Controls were 256 healthy persons. RESULTS There were no statistically significant differences between those with TB and the control group. CONCLUSIONS There was no statistically significant association between mtDNA haplogroups and the presence of TB infection.
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Affiliation(s)
- Massoud Houshmand
- National Institute for Genetic Engineering and Biotechnology, Tehran, Iran
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17
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Shafa Shariat Panahi M, Houshmand M, Tabassi AR. Mitochondrial D-loop variation in leber hereditary neuropathy patients harboring primary G11778A, G3460A, T14484C mutations: J and W haplogroups as high-risk factors. Arch Med Res 2007; 37:1028-33. [PMID: 17045122 DOI: 10.1016/j.arcmed.2006.04.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2005] [Accepted: 04/17/2006] [Indexed: 10/24/2022]
Abstract
BACKGROUND Leber hereditary optic neuropathy (LHON) is a maternally inherited form of retinal ganglion cell degeneration leading to optic atrophy in young adults. It is caused by three primary point mutations including G11778A, G3460A, and T14484C in the mitochondrial genome. These three mutations account for the majority of LHON cases and affect genes that encode for different subunits of mitochondrial complex I. Mitochondrial DNA (mtDNA) has a non-coding region at the displacement loop (D-loop) that contains two hypervariable segments (HVS-I and HVS-II) with high polymorphism. METHODS To investigate any possible association between LHON primary mutations and mtDNA haplogroups (hg), the nucleotide sequence of the HVS-I region of mtDNA was determined in 30 unrelated Iranian patients with LHON harboring one of the primary mutations and 100 normal controls with the same ethnicity. DNA was extracted from the peripheral blood after having obtained informed consent. The nucleotide sequence of HVS-I (np 16,024-16,383) was directly determined. RESULTS Our analysis revealed a relatively high proportion of haplogroup J in LHON patients (53.3%) compared to normal controls (20%). In addition, a slightly significant increase of normal controls of haplogroup L has been confirmed (14% in normal controls vs. 0% in LHON patients at p = 0.03), whereas other haplogroups did not show contribution to LHON contingency. CONCLUSIONS The analysis presented here provides evidence that there is an association between G11778A and G3460A with haplogroup J (including J1 and J2) and W, respectively. Therefore, we hypothesize that mtDNA haplogroups J (J1 and J2) and W might act as predisposing haplotypes, increasing penetrance of LHON disease.
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Affiliation(s)
- Mehdi Shafa Shariat Panahi
- Department of Medical Genetics, National Institute for Genetic Engineering and Biotechnology, Tehran, Iran
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