08/27/2024
*New Study Reveals Mitochondrial Genetics' Role in Gulf War Illness*
For the first time, evidence from UCSD demonstrates that mitochondrial genetics play a role in Gulf War illness (GWI).
Mitochondria, often referred to as the "energy powerhouses" of the cell, have relatively few genes, but because all of these genes influence mitochondrial energy production, they can significantly impact conditions characterized by impaired energy metabolism. Mitochondrial DNA is circular and inherited exclusively from the mother, in contrast to nuclear genetics, which refers to the double-stranded DNA inherited from both parents.
Profiles of mitochondrial DNA, known as "haplogroups," which are ancestrally inherited, are shown to influence the severity of Gulf War Illness (GWI) among deployed veterans.
This discovery reinforces previous findings from the same research group, highlighting the role of mitochondrial involvement in Gulf War Illness. The researchers had hypothesized that certain ancestral patterns, particularly a haplogroup called "Haplogroup U," predominantly found in European populations, might be linked to greater severity of GWI. They hypothesized this relationship because of the haplogroup's association with other conditions known to relate to impaired mitochondrial function and oxidative stress (the type of free radical injury that antioxidant help to protect against, that is closely intertwined to mitochondrial impairment). Indeed, the study found that veterans carrying this haplogroup had, on average, scores 30 to 40 points higher on a GWI severity scale, where the average score for affected veterans is around 100 points—indicating a substantial impact on the condition's severity.
The study also provided some support, consistent with previous evidence, that nuclear genes involved in detoxification play a role in Gulf War Illness.
Read the article here: