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Endocrine Abstracts (2024) 102 66 | DOI: 10.1530/endoabs.102.66

1Bogomolets National Medical University, Kyiv, Ukraine; 2Institute of Gerontology Academy of Medical Sciences of Ukraine, Kyiv, Ukraine; 3Taras Shevchenko National University of Kyiv, Kyiv, Ukraine; 4Medical Laboratory CSD, Kyiv, Ukraine


Introduction: Post-COVID-19 syndrome (PCS; long COVID-19, post-acute COVID-19, long-term effects of COVID-19) is an emerging health problem in people recovering from COVID-19 infection within the past 3-6 months. The study of COVID-19 severity markers and the assessment of PCS prognosis have encouraged the discovery of the molecular mechanisms responsible for PCS and inevitable pathological conditions. Aim: to define the links between mitochondrial (mt)-DNA levels in blood leukocytes and post COVID-19 syndrome (PCS) development in type 2 diabetes patient (T2D) with regard to clinical phenotype, gender, and biological age.

Methods: in this case-control study, 65 T2D patients were selected. Patients were divided on 2 group depending on PCS presence: PCS group (n = 44) and patient who didn’t develop PCS (n = 21) for up to 6 months after COVID-19 infection. A standardized qPCR method was used to measure the mt-DNA content.

Results: We observed significantly lower mt-DNA content in T2D patients with PCS as compared to those without it (1.26±0.25 vs 1.44±0.24; P = 0.011). In gender-specific and age-related analysis mt-DNA amount didn’t differ significantly between subgroups. In a comparative assessment depends on PCS clinical phenotype also a significant difference between mtDNA content not found (P = 0.572). In the stepwise multivariate logistic regression analysis, low mtDNA content was independent of oxygen, glucocorticoid therapy and COVID-19 severity associated with the PCS development. The mtDNA with a cut-off value ≤1.62 can be considered as a biomarker of PCS development in T2D patients with sensitivity – 93.2% and specificity – 42.9%. The AUROC for the model was 0.687 (95% CI 0.541-0.832; P = 0.012).

Conclusions: The low mtDNA content in leukocytes was associated with PCS development in T2D patients, and its decrease could be used as a potential diagnostic biomarker.

Volume 102

ESE Young Endocrinologists and Scientists (EYES) 2024

European Society of Endocrinology 

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