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Mitochondria

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Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...

Mitochondria

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Mitochondrial Precursor Proteins

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Visualization of Mitochondrial Respiratory Function using Cytochrome C Oxidase / Succinate Dehydrogenase (COX/SDH) Double-labeling Histochemistry

Visualization of Mitochondrial Respiratory Function using Cytochrome C Oxidase / Succinate Dehydrogenase (COX/SDH) Double-labeling Histochemistry

Published on: November 23, 2011

Mitochondriogenesis genes and extreme longevity.

Catalina Santiago¹, Nuria Garatachea, Thomas Yvert

¹Universidad Europea de Madrid, Madrid, Spain.

Rejuvenation Research

|November 29, 2012

Summary

This summary is machine-generated.

Genetic variants in the PPARD-PPARGC1A-NRF-TFAM pathway generally do not influence extreme longevity. However, a potential marginal association was observed for a specific polymorphism, rs1937, in centenarians.

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Area of Science:

Genetics
Molecular Biology
Gerontology

Background:

The proliferator-activated receptor delta (PPARD)-peroxisome proliferator-activated receptor γ coactivator 1α (PPARGC1A, PGC1-α)-nuclear respiratory factor (NRF)-mitochondrial transcription Factor A (TFAM) pathway is crucial for mitochondriogenesis.
This pathway influences various health and disease phenotypes.
Its association with extreme longevity remains unexplored.

Purpose of the Study:

To investigate the association between common polymorphisms in the PPARD-PPARGC1A-NRF-TFAM pathway and extreme longevity.
To determine if genetic variations in this mitochondriogenesis pathway contribute to exceptional lifespan.

Main Methods:

A case-control study design was employed.
The study included 107 centenarians (cases) and 284 young adults (controls).
Five common polymorphisms (rs2267668, rs8192678, rs6949152, rs12594956, rs1937) within the pathway genes were analyzed for allele and genotype frequencies.

Main Results:

No significant differences in allele or genotype frequencies were found between centenarians and controls for most studied polymorphisms.
A statistically significant difference (p=0.003) was observed for the CC genotype in rs1937, present in 2.8% of centenarians but absent in controls.
This finding suggests a potential, albeit marginal, association for rs1937 with extreme longevity.

Conclusions:

The common genetic variants within the PPARD-PPARGC1A-NRF-TFAM pathway are generally not associated with extreme longevity.
A possible marginal association exists for the rs1937 polymorphism, warranting further investigation.
This study contributes to understanding the genetic underpinnings of exceptional lifespan.