ESPE Abstracts

Background: Biallelic QRSL1 mutations cause mitochondrial “combined oxidative phosphorylation deficiency-40” (COXPD40). COXPD40 has been reported invariably lethal in infancy. Adrenal insufficiency was weakly reported and investigated among seven previously reported patients with COXPD40.Objective: We report clinical, biochemical, molecular, and functional characteristics of a patient with adrenal in...

Context: Inherited mitochondrial diseases are a group of disorders in which redox homeostasis is disrupted. The adrenal gland is particularly susceptible to oxidative stress associated with mitochondrial dysfunction. Furthermore, all adrenal steroid hormones are synthesized within the mitochondria. Therefore, novel genetic mitochondrial diseases emerge as rare causes of primary adrenal insufficiency (PAI).Objective: Char...

Background: Mutations in the nicotinamide nucleotide transhydrogenase (NNT) gene are a rare cause of primary adrenal insufficiency (PAI), as well as cardiomyopathies and functional impairment of the gonads.Objective: Despite the description of different NNT mutations in homozygosis and compound heterozygosis in PAI patients, it remains to be clarified to which extent the function and expression of the m...

Background and hypothesis: Mitochondrial disorders are multisystemic conditions associated with sensorineural hearing loss, encephalomyopathy, lactic acidosis, and non-autoimmune diabetes. The majority of molecular etiologies involve mutations in the genes encoding the oxidative phosphorylation system's components. Superoxide generation is significantly increased and causes oxidative damage in the affected tissues in these disorders. The establishment of ...