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Related Concept Videos

Multiple Sclerosis l: Introduction01:19

Multiple Sclerosis l: Introduction

Multiple sclerosis is a chronic autoimmune disease of the central nervous system (CNS) that affects the brain, spinal cord, and optic nerves. It is an inflammatory demyelinating disorder and a leading cause of neurological disability in young adults.EpidemiologyMS commonly begins between 20 and 40 years of age and is twice as common in women. Its exact cause remains unclear, but genetic susceptibility contributes, with higher risk in first-degree relatives and identical twins. A greater...
Animal Mitochondrial Genetics02:59

Animal Mitochondrial Genetics

Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
Genome-wide Association Studies-GWAS01:11

Genome-wide Association Studies-GWAS

Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
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Mitochondrial Precursor Proteins01:39

Mitochondrial Precursor Proteins

Mitochondrial precursors are partially unfolded or loosely folded polypeptide chains. Newly synthesized precursors are inhibited from spontaneously folding into their native conformation by the cytosolic chaperones, heat shock proteins 70 (Hsp70), and mitochondrial import stimulation factors (MSFs). Precursors bound to MSFs are guided to the TOM70-TOM37 receptors, while precursors bound to Hsp70  chaperones are targetted to TOM20-TOM22 receptor complexes.
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Related Experiment Video

Updated: Jul 15, 2026

Modeling Mitochondrial Disease Using Brain Organoids: A Focus on Mitochondrial Encephalomyopathy, Lactic Acidosis, and Stroke-like Episodes
08:56

Modeling Mitochondrial Disease Using Brain Organoids: A Focus on Mitochondrial Encephalomyopathy, Lactic Acidosis, and Stroke-like Episodes

Published on: October 10, 2025

UCP2 and mitochondrial haplogroups as a multiple sclerosis risk factor.

D Otaegui1, A Saenz, J Ruiz-Martinez

  • 1Unidad Experimental, Hospital Donostia, Spain. dotaegui@gmail.com

Multiple Sclerosis (Houndmills, Basingstoke, England)
|April 28, 2007
PubMed
Summary

Researchers confirmed a UCP2 gene single nucleotide polymorphism (SNP) as a multiple sclerosis (MS) risk factor in a Spanish population. This genetic link involves mitochondrial function and proton transport, offering new insights into MS susceptibility.

Related Experiment Videos

Last Updated: Jul 15, 2026

Modeling Mitochondrial Disease Using Brain Organoids: A Focus on Mitochondrial Encephalomyopathy, Lactic Acidosis, and Stroke-like Episodes
08:56

Modeling Mitochondrial Disease Using Brain Organoids: A Focus on Mitochondrial Encephalomyopathy, Lactic Acidosis, and Stroke-like Episodes

Published on: October 10, 2025

Area of Science:

  • Genetics
  • Neuroimmunology
  • Mitochondrial Biology

Background:

  • Multiple sclerosis (MS) is a complex neurological disorder with a significant genetic component.
  • The UCP2 gene, involved in mitochondrial proton transport and ATP synthesis, has been implicated as a potential MS risk factor.
  • Mitochondrial DNA (mtDNA) haplogroups also influence ATP production and are linked to mitochondrial function.

Purpose of the Study:

  • To investigate the association between a specific UCP2 single nucleotide polymorphism (SNP) and MS risk.
  • To analyze the distribution of mtDNA haplogroups in a Spanish MS population.
  • To explore potential interactions between the UCP2 SNP and mtDNA haplogroups in the context of MS.

Main Methods:

  • Genotyping of the UCP2 SNP in Spanish individuals with and without MS.
  • Analysis of mtDNA haplogroup frequencies in the study cohort.
  • Statistical analysis to determine the association between the UCP2 SNP, mtDNA haplogroups, and MS.

Main Results:

  • The study confirmed the association between the UCP2 SNP and an increased risk of multiple sclerosis.
  • A slight correlation was observed between the UCP2 SNP and specific mitochondrial haplogroups.
  • mtDNA haplogroup distribution showed variations within the Spanish MS population, including a Basque sub-group.

Conclusions:

  • The UCP2 SNP is a confirmed genetic risk factor for multiple sclerosis in the studied Spanish population.
  • Findings suggest a potential interplay between nuclear-encoded UCP2 variants and mitochondrial genetics in MS pathogenesis.
  • Further research is warranted to elucidate the functional mechanisms linking UCP2, mtDNA haplogroups, and MS susceptibility.