Mitochondrial mutation in Iranian patients with multiple sclerosis, correlation between haplogroups H, A and clinical manifestations.
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.
Ghabaee
Mojdeh
M
Department of Neurology, Iranian Center of Neurological Research, Tehran University of Medical Sciences, Keshavarz Blvd., Tehran, Iran. ghabaeem@tums.ac.ir
Omranisikaroudi
Motahar
M
Amrisaroukolaei
Shahla
S
Meysamie
Alipasha
A
Sahraian
Mohammad Ali
MA
Bayati
Asghar
A
Sanati
Mohammad Hossein
MH
Houshman
Mossoud
M
Sadeghian
Homa
H
Vajihazaman
Khalili
K
D000293:Adolescent; D000328:Adult; D044466:Asian People / Q000235:genetics*; D004272:DNA, Mitochondrial / Q000235:genetics*; D005260:Female; D006239:Haplotypes; D006801:Humans; D007492:Iran; D008297:Male; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000235:genetics* / Q000473:pathology*; D009154:Mutation / Q000235:genetics*; D009900:Optic Nerve / Q000473:pathology
D004272:DNA, Mitochondrial