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[Circulating levels of CoQ10 in hypo- and hyperthyroidism]
C Pandolfi1, D Ferrari, I Stanic
1I Divisione Medica, Ospedale Maggiore, Lodi, Milano.
Minerva Endocrinologica
|September 1, 1994
Summary
Plasma Coenzyme Q10 (CoQ10) levels differ between hypothyroidism and hyperthyroidism, with higher levels in hypothyroid patients. Further research is needed to understand CoQ10
Area of Science:
- Endocrinology
- Biochemistry
- Cardiology
Context:
- Coenzyme Q10 (CoQ10) is vital for oxidative phosphorylation.
- Plasma CoQ10 levels are studied in various pathologies, including cardiac failure.
- CoQ10 determination is a potential diagnostic tool for thyroid diseases.
Purpose:
- To evaluate circulating CoQ10 levels in hypo- and hyperthyroidism.
- To compare CoQ10 levels between hypothyroid, hyperthyroid, and control groups.
- To investigate the relationship between CoQ10 and thyroid hormones (fT3, tT3, fT4, tT4).
Summary:
- CoQ10 levels were significantly lower in hyperthyroid patients (0.51 ± 0.35 mcg/ml) compared to hypothyroid patients (0.97 ± 0.46 mcg/ml).
- Hypothyroid patients showed a higher prevalence of elevated CoQ10, while hyperthyroid patients had more low levels.
- An inverse correlation was observed between CoQ10 and free/total triiodothyronine (fT3/tT3), but not thyroxine (fT4/tT4).
Impact:
- Plasma CoQ10 levels did not sharply distinguish between euthyroidism and thyroid dysfunction.
- Longitudinal studies are necessary to determine CoQ10 normalization time post-therapy.
- The study suggests exploring exogenous CoQ10 administration for hyperthyroid patients with cardiac risks.